/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include "base/memory_tool.h"
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#include <forward_list>
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#include <fstream>
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#include <iostream>
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#include <limits>
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#include <sstream>
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#include <string>
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#include <type_traits>
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#include <vector>
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#if defined(__linux__) && defined(__arm__)
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#include <sys/personality.h>
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#include <sys/utsname.h>
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#endif
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#include "android-base/stringprintf.h"
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#include "android-base/strings.h"
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#include "arch/instruction_set_features.h"
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#include "arch/mips/instruction_set_features_mips.h"
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#include "art_method-inl.h"
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#include "base/callee_save_type.h"
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#include "base/dumpable.h"
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#include "base/file_utils.h"
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#include "base/leb128.h"
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#include "base/macros.h"
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#include "base/mutex.h"
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#include "base/os.h"
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#include "base/scoped_flock.h"
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#include "base/stl_util.h"
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#include "base/time_utils.h"
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#include "base/timing_logger.h"
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#include "base/unix_file/fd_file.h"
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#include "base/utils.h"
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#include "base/zip_archive.h"
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#include "class_linker.h"
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#include "class_loader_context.h"
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#include "cmdline_parser.h"
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#include "compiler.h"
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#include "compiler_callbacks.h"
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#include "debug/elf_debug_writer.h"
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#include "debug/method_debug_info.h"
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#include "dex/descriptors_names.h"
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#include "dex/dex_file-inl.h"
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#include "dex/quick_compiler_callbacks.h"
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#include "dex/verification_results.h"
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#include "dex2oat_options.h"
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#include "dex2oat_return_codes.h"
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#include "dexlayout.h"
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#include "driver/compiler_driver.h"
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#include "driver/compiler_options.h"
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#include "driver/compiler_options_map-inl.h"
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#include "elf_file.h"
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#include "gc/space/image_space.h"
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#include "gc/space/space-inl.h"
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#include "gc/verification.h"
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#include "interpreter/unstarted_runtime.h"
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#include "jni/java_vm_ext.h"
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#include "linker/elf_writer.h"
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#include "linker/elf_writer_quick.h"
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#include "linker/image_writer.h"
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#include "linker/multi_oat_relative_patcher.h"
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#include "linker/oat_writer.h"
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#include "mirror/class-inl.h"
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#include "mirror/class_loader.h"
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#include "mirror/object-inl.h"
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#include "mirror/object_array-inl.h"
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#include "oat_file.h"
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#include "oat_file_assistant.h"
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#include "profile/profile_compilation_info.h"
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#include "runtime.h"
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#include "runtime_options.h"
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#include "scoped_thread_state_change-inl.h"
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#include "stream/buffered_output_stream.h"
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#include "stream/file_output_stream.h"
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#include "vdex_file.h"
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#include "verifier/verifier_deps.h"
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#include "well_known_classes.h"
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namespace art {
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using android::base::StringAppendV;
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using android::base::StringPrintf;
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using gc::space::ImageSpace;
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static constexpr size_t kDefaultMinDexFilesForSwap = 2;
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static constexpr size_t kDefaultMinDexFileCumulativeSizeForSwap = 20 * MB;
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// Compiler filter override for very large apps.
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static constexpr CompilerFilter::Filter kLargeAppFilter = CompilerFilter::kVerify;
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static int original_argc;
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static char** original_argv;
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static std::string CommandLine() {
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std::vector<std::string> command;
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command.reserve(original_argc);
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for (int i = 0; i < original_argc; ++i) {
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command.push_back(original_argv[i]);
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}
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return android::base::Join(command, ' ');
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}
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// A stripped version. Remove some less essential parameters. If we see a "--zip-fd=" parameter, be
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// even more aggressive. There won't be much reasonable data here for us in that case anyways (the
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// locations are all staged).
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static std::string StrippedCommandLine() {
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std::vector<std::string> command;
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// Do a pre-pass to look for zip-fd and the compiler filter.
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bool saw_zip_fd = false;
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bool saw_compiler_filter = false;
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for (int i = 0; i < original_argc; ++i) {
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if (android::base::StartsWith(original_argv[i], "--zip-fd=")) {
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saw_zip_fd = true;
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}
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if (android::base::StartsWith(original_argv[i], "--compiler-filter=")) {
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saw_compiler_filter = true;
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}
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}
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// Now filter out things.
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for (int i = 0; i < original_argc; ++i) {
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// All runtime-arg parameters are dropped.
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if (strcmp(original_argv[i], "--runtime-arg") == 0) {
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i++; // Drop the next part, too.
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continue;
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}
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// Any instruction-setXXX is dropped.
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if (android::base::StartsWith(original_argv[i], "--instruction-set")) {
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continue;
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}
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// The boot image is dropped.
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if (android::base::StartsWith(original_argv[i], "--boot-image=")) {
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continue;
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}
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// The image format is dropped.
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if (android::base::StartsWith(original_argv[i], "--image-format=")) {
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continue;
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}
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// This should leave any dex-file and oat-file options, describing what we compiled.
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// However, we prefer to drop this when we saw --zip-fd.
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if (saw_zip_fd) {
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// Drop anything --zip-X, --dex-X, --oat-X, --swap-X, or --app-image-X
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if (android::base::StartsWith(original_argv[i], "--zip-") ||
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android::base::StartsWith(original_argv[i], "--dex-") ||
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android::base::StartsWith(original_argv[i], "--oat-") ||
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android::base::StartsWith(original_argv[i], "--swap-") ||
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android::base::StartsWith(original_argv[i], "--app-image-")) {
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continue;
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}
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}
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command.push_back(original_argv[i]);
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}
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if (!saw_compiler_filter) {
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command.push_back("--compiler-filter=" +
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CompilerFilter::NameOfFilter(CompilerFilter::kDefaultCompilerFilter));
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}
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// Construct the final output.
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if (command.size() <= 1U) {
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// It seems only "/apex/com.android.runtime/bin/dex2oat" is left, or not
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// even that. Use a pretty line.
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return "Starting dex2oat.";
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}
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return android::base::Join(command, ' ');
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}
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static void UsageErrorV(const char* fmt, va_list ap) {
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std::string error;
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StringAppendV(&error, fmt, ap);
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LOG(ERROR) << error;
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}
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static void UsageError(const char* fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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UsageErrorV(fmt, ap);
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va_end(ap);
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}
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NO_RETURN static void Usage(const char* fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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UsageErrorV(fmt, ap);
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va_end(ap);
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UsageError("Command: %s", CommandLine().c_str());
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UsageError("Usage: dex2oat [options]...");
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UsageError("");
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UsageError(" -j<number>: specifies the number of threads used for compilation.");
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UsageError(" Default is the number of detected hardware threads available on the");
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UsageError(" host system.");
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UsageError(" Example: -j12");
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UsageError("");
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UsageError(" --dex-file=<dex-file>: specifies a .dex, .jar, or .apk file to compile.");
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UsageError(" Example: --dex-file=/system/framework/core.jar");
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UsageError("");
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UsageError(" --dex-location=<dex-location>: specifies an alternative dex location to");
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UsageError(" encode in the oat file for the corresponding --dex-file argument.");
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UsageError(" Example: --dex-file=/home/build/out/system/framework/core.jar");
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UsageError(" --dex-location=/system/framework/core.jar");
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UsageError("");
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UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file");
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UsageError(" containing a classes.dex file to compile.");
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UsageError(" Example: --zip-fd=5");
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UsageError("");
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UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file");
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UsageError(" corresponding to the file descriptor specified by --zip-fd.");
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UsageError(" Example: --zip-location=/system/app/Calculator.apk");
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UsageError("");
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UsageError(" --oat-file=<file.oat>: specifies an oat output destination via a filename.");
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UsageError(" Example: --oat-file=/system/framework/boot.oat");
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UsageError("");
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UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor.");
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UsageError(" Example: --oat-fd=6");
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UsageError("");
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UsageError(" --input-vdex-fd=<number>: specifies the vdex input source via a file descriptor.");
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UsageError(" Example: --input-vdex-fd=6");
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UsageError("");
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UsageError(" --output-vdex-fd=<number>: specifies the vdex output destination via a file");
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UsageError(" descriptor.");
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UsageError(" Example: --output-vdex-fd=6");
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UsageError("");
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UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding");
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UsageError(" to the file descriptor specified by --oat-fd.");
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UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat");
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UsageError("");
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UsageError(" --oat-symbols=<file.oat>: specifies a destination where the oat file is copied.");
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UsageError(" This is equivalent to file copy as build post-processing step.");
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UsageError(" It is intended to be used with --strip and it happens before it.");
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UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat");
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UsageError("");
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UsageError(" --strip: remove all debugging sections at the end (but keep mini-debug-info).");
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UsageError(" This is equivalent to the \"strip\" command as build post-processing step.");
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UsageError(" It is intended to be used with --oat-symbols and it happens after it.");
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UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat");
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UsageError("");
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UsageError(" --image=<file.art>: specifies an output image filename.");
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UsageError(" Example: --image=/system/framework/boot.art");
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UsageError("");
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UsageError(" --image-format=(uncompressed|lz4|lz4hc):");
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UsageError(" Which format to store the image.");
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UsageError(" Example: --image-format=lz4");
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UsageError(" Default: uncompressed");
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UsageError("");
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UsageError(" --image-classes=<classname-file>: specifies classes to include in an image.");
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UsageError(" Example: --image=frameworks/base/preloaded-classes");
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UsageError("");
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UsageError(" --base=<hex-address>: specifies the base address when creating a boot image.");
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UsageError(" Example: --base=0x50000000");
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UsageError("");
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UsageError(" --boot-image=<file.art>: provide the image file for the boot class path.");
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UsageError(" Do not include the arch as part of the name, it is added automatically.");
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UsageError(" Example: --boot-image=/system/framework/boot.art");
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UsageError(" (specifies /system/framework/<arch>/boot.art as the image file)");
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UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art");
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UsageError("");
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UsageError(" --android-root=<path>: used to locate libraries for portable linking.");
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UsageError(" Example: --android-root=out/host/linux-x86");
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UsageError(" Default: $ANDROID_ROOT");
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UsageError("");
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UsageError(" --instruction-set=(arm|arm64|mips|mips64|x86|x86_64): compile for a particular");
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UsageError(" instruction set.");
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UsageError(" Example: --instruction-set=x86");
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UsageError(" Default: arm");
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UsageError("");
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UsageError(" --instruction-set-features=...,: Specify instruction set features");
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UsageError(" On target the value 'runtime' can be used to detect features at run time.");
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UsageError(" If target does not support run-time detection the value 'runtime'");
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UsageError(" has the same effect as the value 'default'.");
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UsageError(" Note: the value 'runtime' has no effect if it is used on host.");
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UsageError(" Example: --instruction-set-features=div");
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UsageError(" Default: default");
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UsageError("");
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UsageError(" --compiler-backend=(Quick|Optimizing): select compiler backend");
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UsageError(" set.");
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UsageError(" Example: --compiler-backend=Optimizing");
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UsageError(" Default: Optimizing");
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UsageError("");
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UsageError(" --compiler-filter="
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"(assume-verified"
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"|extract"
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"|verify"
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"|quicken"
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"|space-profile"
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"|space"
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"|speed-profile"
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"|speed"
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"|everything-profile"
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"|everything):");
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UsageError(" select compiler filter.");
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UsageError(" Example: --compiler-filter=everything");
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UsageError(" Default: speed");
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UsageError("");
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UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge");
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UsageError(" method for compiler filter tuning.");
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UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold);
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UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold);
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UsageError("");
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UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large");
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UsageError(" method for compiler filter tuning.");
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UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold);
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UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold);
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UsageError("");
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UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small");
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UsageError(" method for compiler filter tuning.");
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UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold);
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UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold);
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UsageError("");
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UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny");
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UsageError(" method for compiler filter tuning.");
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UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold);
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UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold);
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UsageError("");
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UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for");
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UsageError(" compiler filter tuning. If the input has fewer than this many methods");
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UsageError(" and the filter is not interpret-only or verify-none or verify-at-runtime, ");
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UsageError(" overrides the filter to use speed");
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UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold);
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UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold);
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UsageError("");
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UsageError(" --inline-max-code-units=<code-units-count>: the maximum code units that a method");
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UsageError(" can have to be considered for inlining. A zero value will disable inlining.");
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UsageError(" Honored only by Optimizing. Has priority over the --compiler-filter option.");
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UsageError(" Intended for development/experimental use.");
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UsageError(" Example: --inline-max-code-units=%d",
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CompilerOptions::kDefaultInlineMaxCodeUnits);
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UsageError(" Default: %d", CompilerOptions::kDefaultInlineMaxCodeUnits);
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UsageError("");
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UsageError(" --dump-timings: display a breakdown of where time was spent");
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UsageError("");
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UsageError(" --dump-pass-timings: display a breakdown of time spent in optimization");
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UsageError(" passes for each compiled method.");
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UsageError("");
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UsageError(" -g");
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UsageError(" --generate-debug-info: Generate debug information for native debugging,");
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UsageError(" such as stack unwinding information, ELF symbols and DWARF sections.");
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UsageError(" If used without --debuggable, it will be best-effort only.");
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UsageError(" This option does not affect the generated code. (disabled by default)");
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UsageError("");
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UsageError(" --no-generate-debug-info: Do not generate debug information for native debugging.");
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UsageError("");
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UsageError(" --generate-mini-debug-info: Generate minimal amount of LZMA-compressed");
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UsageError(" debug information necessary to print backtraces. (disabled by default)");
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UsageError("");
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UsageError(" --no-generate-mini-debug-info: Do not generate backtrace info.");
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UsageError("");
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UsageError(" --generate-build-id: Generate GNU-compatible linker build ID ELF section with");
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UsageError(" SHA-1 of the file content (and thus stable across identical builds)");
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UsageError("");
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UsageError(" --no-generate-build-id: Do not generate the build ID ELF section.");
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UsageError("");
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UsageError(" --debuggable: Produce code debuggable with Java debugger.");
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UsageError("");
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UsageError(" --avoid-storing-invocation: Avoid storing the invocation args in the key value");
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UsageError(" store. Used to test determinism with different args.");
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UsageError("");
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UsageError(" --write-invocation-to=<file>: Write the invocation commandline to the given file");
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UsageError(" for later use. Used to test determinism with different host architectures.");
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UsageError("");
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UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,");
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UsageError(" such as initial heap size, maximum heap size, and verbose output.");
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UsageError(" Use a separate --runtime-arg switch for each argument.");
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UsageError(" Example: --runtime-arg -Xms256m");
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UsageError("");
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UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation.");
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UsageError("");
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UsageError(" --profile-file-fd=<number>: same as --profile-file but accepts a file descriptor.");
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UsageError(" Cannot be used together with --profile-file.");
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UsageError("");
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UsageError(" --swap-file=<file-name>: specifies a file to use for swap.");
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UsageError(" Example: --swap-file=/data/tmp/swap.001");
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UsageError("");
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UsageError(" --swap-fd=<file-descriptor>: specifies a file to use for swap (by descriptor).");
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UsageError(" Example: --swap-fd=10");
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UsageError("");
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UsageError(" --swap-dex-size-threshold=<size>: specifies the minimum total dex file size in");
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UsageError(" bytes to allow the use of swap.");
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UsageError(" Example: --swap-dex-size-threshold=1000000");
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UsageError(" Default: %zu", kDefaultMinDexFileCumulativeSizeForSwap);
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UsageError("");
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UsageError(" --swap-dex-count-threshold=<count>: specifies the minimum number of dex files to");
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UsageError(" allow the use of swap.");
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UsageError(" Example: --swap-dex-count-threshold=10");
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UsageError(" Default: %zu", kDefaultMinDexFilesForSwap);
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UsageError("");
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UsageError(" --very-large-app-threshold=<size>: specifies the minimum total dex file size in");
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UsageError(" bytes to consider the input \"very large\" and reduce compilation done.");
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UsageError(" Example: --very-large-app-threshold=100000000");
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UsageError("");
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UsageError(" --app-image-fd=<file-descriptor>: specify output file descriptor for app image.");
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UsageError(" The image is non-empty only if a profile is passed in.");
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UsageError(" Example: --app-image-fd=10");
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UsageError("");
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UsageError(" --app-image-file=<file-name>: specify a file name for app image.");
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UsageError(" Example: --app-image-file=/data/dalvik-cache/system@app@Calculator.apk.art");
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UsageError("");
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UsageError(" --multi-image: obsolete, ignored");
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UsageError("");
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UsageError(" --force-determinism: force the compiler to emit a deterministic output.");
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UsageError("");
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UsageError(" --dump-cfg=<cfg-file>: dump control-flow graphs (CFGs) to specified file.");
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UsageError(" Example: --dump-cfg=output.cfg");
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UsageError("");
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UsageError(" --dump-cfg-append: when dumping CFGs to an existing file, append new CFG data to");
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UsageError(" existing data (instead of overwriting existing data with new data, which is");
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UsageError(" the default behavior). This option is only meaningful when used with");
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UsageError(" --dump-cfg.");
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UsageError("");
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UsageError(" --classpath-dir=<directory-path>: directory used to resolve relative class paths.");
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UsageError("");
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UsageError(" --class-loader-context=<string spec>: a string specifying the intended");
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UsageError(" runtime loading context for the compiled dex files.");
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UsageError("");
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UsageError(" --stored-class-loader-context=<string spec>: a string specifying the intended");
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UsageError(" runtime loading context that is stored in the oat file. Overrides");
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UsageError(" --class-loader-context. Note that this ignores the classpath_dir arg.");
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UsageError("");
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UsageError(" It describes how the class loader chain should be built in order to ensure");
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UsageError(" classes are resolved during dex2aot as they would be resolved at runtime.");
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UsageError(" This spec will be encoded in the oat file. If at runtime the dex file is");
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UsageError(" loaded in a different context, the oat file will be rejected.");
|
UsageError("");
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UsageError(" The chain is interpreted in the natural 'parent order', meaning that class");
|
UsageError(" loader 'i+1' will be the parent of class loader 'i'.");
|
UsageError(" The compilation sources will be appended to the classpath of the first class");
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UsageError(" loader.");
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UsageError("");
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UsageError(" E.g. if the context is 'PCL[lib1.dex];DLC[lib2.dex]' and ");
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UsageError(" --dex-file=src.dex then dex2oat will setup a PathClassLoader with classpath ");
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UsageError(" 'lib1.dex:src.dex' and set its parent to a DelegateLastClassLoader with ");
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UsageError(" classpath 'lib2.dex'.");
|
UsageError("");
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UsageError(" Note that the compiler will be tolerant if the source dex files specified");
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UsageError(" with --dex-file are found in the classpath. The source dex files will be");
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UsageError(" removed from any class loader's classpath possibly resulting in empty");
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UsageError(" class loaders.");
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UsageError("");
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UsageError(" Example: --class-loader-context=PCL[lib1.dex:lib2.dex];DLC[lib3.dex]");
|
UsageError("");
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UsageError(" --class-loader-context-fds=<fds>: a colon-separated list of file descriptors");
|
UsageError(" for dex files in --class-loader-context. Their order must be the same as");
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UsageError(" dex files in flattened class loader context.");
|
UsageError("");
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UsageError(" --dirty-image-objects=<directory-path>: list of known dirty objects in the image.");
|
UsageError(" The image writer will group them together.");
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UsageError("");
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UsageError(" --compact-dex-level=none|fast: None avoids generating compact dex, fast");
|
UsageError(" generates compact dex with low compile time. If speed-profile is specified as");
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UsageError(" the compiler filter and the profile is not empty, the default compact dex");
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UsageError(" level is always used.");
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UsageError("");
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UsageError(" --deduplicate-code=true|false: enable|disable code deduplication. Deduplicated");
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UsageError(" code will have an arbitrary symbol tagged with [DEDUPED].");
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UsageError("");
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UsageError(" --copy-dex-files=true|false: enable|disable copying the dex files into the");
|
UsageError(" output vdex.");
|
UsageError("");
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UsageError(" --compilation-reason=<string>: optional metadata specifying the reason for");
|
UsageError(" compiling the apk. If specified, the string will be embedded verbatim in");
|
UsageError(" the key value store of the oat file.");
|
UsageError(" Example: --compilation-reason=install");
|
UsageError("");
|
UsageError(" --resolve-startup-const-strings=true|false: If true, the compiler eagerly");
|
UsageError(" resolves strings referenced from const-string of startup methods.");
|
UsageError("");
|
UsageError(" --max-image-block-size=<size>: Maximum solid block size for compressed images.");
|
UsageError("");
|
std::cerr << "See log for usage error information\n";
|
exit(EXIT_FAILURE);
|
}
|
|
// The primary goal of the watchdog is to prevent stuck build servers
|
// during development when fatal aborts lead to a cascade of failures
|
// that result in a deadlock.
|
class WatchDog {
|
// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using LOG which uses locks
|
#undef CHECK_PTHREAD_CALL
|
#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \
|
do { \
|
int rc = call args; \
|
if (rc != 0) { \
|
errno = rc; \
|
std::string message(# call); \
|
message += " failed for "; \
|
message += reason; \
|
Fatal(message); \
|
} \
|
} while (false)
|
|
public:
|
explicit WatchDog(int64_t timeout_in_milliseconds)
|
: timeout_in_milliseconds_(timeout_in_milliseconds),
|
shutting_down_(false) {
|
const char* reason = "dex2oat watch dog thread startup";
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason);
|
#ifndef __APPLE__
|
pthread_condattr_t condattr;
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_condattr_init, (&condattr), reason);
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_condattr_setclock, (&condattr, CLOCK_MONOTONIC), reason);
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, &condattr), reason);
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_condattr_destroy, (&condattr), reason);
|
#endif
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason);
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason);
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason);
|
}
|
~WatchDog() {
|
const char* reason = "dex2oat watch dog thread shutdown";
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason);
|
shutting_down_ = true;
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason);
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason);
|
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason);
|
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason);
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason);
|
}
|
|
static void SetRuntime(Runtime* runtime) {
|
const char* reason = "dex2oat watch dog set runtime";
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&runtime_mutex_), reason);
|
runtime_ = runtime;
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&runtime_mutex_), reason);
|
}
|
|
// TODO: tune the multiplier for GC verification, the following is just to make the timeout
|
// large.
|
static constexpr int64_t kWatchdogVerifyMultiplier =
|
kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1;
|
|
// When setting timeouts, keep in mind that the build server may not be as fast as your
|
// desktop. Debug builds are slower so they have larger timeouts.
|
static constexpr int64_t kWatchdogSlowdownFactor = kIsDebugBuild ? 5U : 1U;
|
|
// 9.5 minutes scaled by kSlowdownFactor. This is slightly smaller than the Package Manager
|
// watchdog (PackageManagerService.WATCHDOG_TIMEOUT, 10 minutes), so that dex2oat will abort
|
// itself before that watchdog would take down the system server.
|
static constexpr int64_t kWatchDogTimeoutSeconds = kWatchdogSlowdownFactor * (9 * 60 + 30);
|
|
static constexpr int64_t kDefaultWatchdogTimeoutInMS =
|
kWatchdogVerifyMultiplier * kWatchDogTimeoutSeconds * 1000;
|
|
private:
|
static void* CallBack(void* arg) {
|
WatchDog* self = reinterpret_cast<WatchDog*>(arg);
|
::art::SetThreadName("dex2oat watch dog");
|
self->Wait();
|
return nullptr;
|
}
|
|
NO_RETURN static void Fatal(const std::string& message) {
|
// TODO: When we can guarantee it won't prevent shutdown in error cases, move to LOG. However,
|
// it's rather easy to hang in unwinding.
|
// LogLine also avoids ART logging lock issues, as it's really only a wrapper around
|
// logcat logging or stderr output.
|
LogHelper::LogLineLowStack(__FILE__, __LINE__, LogSeverity::FATAL, message.c_str());
|
|
// If we're on the host, try to dump all threads to get a sense of what's going on. This is
|
// restricted to the host as the dump may itself go bad.
|
// TODO: Use a double watchdog timeout, so we can enable this on-device.
|
Runtime* runtime = GetRuntime();
|
if (!kIsTargetBuild && runtime != nullptr) {
|
runtime->AttachCurrentThread("Watchdog thread attached for dumping",
|
true,
|
nullptr,
|
false);
|
runtime->DumpForSigQuit(std::cerr);
|
}
|
exit(1);
|
}
|
|
void Wait() {
|
timespec timeout_ts;
|
#if defined(__APPLE__)
|
InitTimeSpec(true, CLOCK_REALTIME, timeout_in_milliseconds_, 0, &timeout_ts);
|
#else
|
InitTimeSpec(true, CLOCK_MONOTONIC, timeout_in_milliseconds_, 0, &timeout_ts);
|
#endif
|
const char* reason = "dex2oat watch dog thread waiting";
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason);
|
while (!shutting_down_) {
|
int rc = pthread_cond_timedwait(&cond_, &mutex_, &timeout_ts);
|
if (rc == EINTR) {
|
continue;
|
} else if (rc == ETIMEDOUT) {
|
Fatal(StringPrintf("dex2oat did not finish after %" PRId64 " seconds",
|
timeout_in_milliseconds_/1000));
|
} else if (rc != 0) {
|
std::string message(StringPrintf("pthread_cond_timedwait failed: %s", strerror(rc)));
|
Fatal(message);
|
}
|
}
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason);
|
}
|
|
static Runtime* GetRuntime() {
|
const char* reason = "dex2oat watch dog get runtime";
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&runtime_mutex_), reason);
|
Runtime* runtime = runtime_;
|
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&runtime_mutex_), reason);
|
return runtime;
|
}
|
|
static pthread_mutex_t runtime_mutex_;
|
static Runtime* runtime_;
|
|
// TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases.
|
pthread_mutex_t mutex_;
|
pthread_cond_t cond_;
|
pthread_attr_t attr_;
|
pthread_t pthread_;
|
|
const int64_t timeout_in_milliseconds_;
|
bool shutting_down_;
|
};
|
|
pthread_mutex_t WatchDog::runtime_mutex_ = PTHREAD_MUTEX_INITIALIZER;
|
Runtime* WatchDog::runtime_ = nullptr;
|
|
class Dex2Oat final {
|
public:
|
explicit Dex2Oat(TimingLogger* timings) :
|
compiler_kind_(Compiler::kOptimizing),
|
// Take the default set of instruction features from the build.
|
key_value_store_(nullptr),
|
verification_results_(nullptr),
|
runtime_(nullptr),
|
thread_count_(sysconf(_SC_NPROCESSORS_CONF)),
|
start_ns_(NanoTime()),
|
start_cputime_ns_(ProcessCpuNanoTime()),
|
strip_(false),
|
oat_fd_(-1),
|
input_vdex_fd_(-1),
|
output_vdex_fd_(-1),
|
input_vdex_file_(nullptr),
|
dm_fd_(-1),
|
zip_fd_(-1),
|
image_base_(0U),
|
image_classes_zip_filename_(nullptr),
|
image_classes_filename_(nullptr),
|
image_storage_mode_(ImageHeader::kStorageModeUncompressed),
|
passes_to_run_filename_(nullptr),
|
dirty_image_objects_filename_(nullptr),
|
is_host_(false),
|
elf_writers_(),
|
oat_writers_(),
|
rodata_(),
|
image_writer_(nullptr),
|
driver_(nullptr),
|
opened_dex_files_maps_(),
|
opened_dex_files_(),
|
avoid_storing_invocation_(false),
|
swap_fd_(kInvalidFd),
|
app_image_fd_(kInvalidFd),
|
profile_file_fd_(kInvalidFd),
|
timings_(timings),
|
force_determinism_(false)
|
{}
|
|
~Dex2Oat() {
|
// Log completion time before deleting the runtime_, because this accesses
|
// the runtime.
|
LogCompletionTime();
|
|
if (!kIsDebugBuild && !(kRunningOnMemoryTool && kMemoryToolDetectsLeaks)) {
|
// We want to just exit on non-debug builds, not bringing the runtime down
|
// in an orderly fashion. So release the following fields.
|
driver_.release(); // NOLINT
|
image_writer_.release(); // NOLINT
|
for (std::unique_ptr<const DexFile>& dex_file : opened_dex_files_) {
|
dex_file.release(); // NOLINT
|
}
|
new std::vector<MemMap>(std::move(opened_dex_files_maps_)); // Leak MemMaps.
|
for (std::unique_ptr<File>& vdex_file : vdex_files_) {
|
vdex_file.release(); // NOLINT
|
}
|
for (std::unique_ptr<File>& oat_file : oat_files_) {
|
oat_file.release(); // NOLINT
|
}
|
runtime_.release(); // NOLINT
|
verification_results_.release(); // NOLINT
|
key_value_store_.release(); // NOLINT
|
}
|
}
|
|
struct ParserOptions {
|
std::vector<std::string> oat_symbols;
|
std::string boot_image_filename;
|
int64_t watch_dog_timeout_in_ms = -1;
|
bool watch_dog_enabled = true;
|
bool requested_specific_compiler = false;
|
std::string error_msg;
|
};
|
|
void ParseBase(const std::string& option) {
|
char* end;
|
image_base_ = strtoul(option.c_str(), &end, 16);
|
if (end == option.c_str() || *end != '\0') {
|
Usage("Failed to parse hexadecimal value for option %s", option.data());
|
}
|
}
|
|
bool VerifyProfileData() {
|
return profile_compilation_info_->VerifyProfileData(compiler_options_->dex_files_for_oat_file_);
|
}
|
|
void ParseInstructionSetVariant(const std::string& option, ParserOptions* parser_options) {
|
compiler_options_->instruction_set_features_ = InstructionSetFeatures::FromVariant(
|
compiler_options_->instruction_set_, option, &parser_options->error_msg);
|
if (compiler_options_->instruction_set_features_ == nullptr) {
|
Usage("%s", parser_options->error_msg.c_str());
|
}
|
}
|
|
void ParseInstructionSetFeatures(const std::string& option, ParserOptions* parser_options) {
|
if (compiler_options_->instruction_set_features_ == nullptr) {
|
compiler_options_->instruction_set_features_ = InstructionSetFeatures::FromVariant(
|
compiler_options_->instruction_set_, "default", &parser_options->error_msg);
|
if (compiler_options_->instruction_set_features_ == nullptr) {
|
Usage("Problem initializing default instruction set features variant: %s",
|
parser_options->error_msg.c_str());
|
}
|
}
|
compiler_options_->instruction_set_features_ =
|
compiler_options_->instruction_set_features_->AddFeaturesFromString(
|
option, &parser_options->error_msg);
|
if (compiler_options_->instruction_set_features_ == nullptr) {
|
Usage("Error parsing '%s': %s", option.c_str(), parser_options->error_msg.c_str());
|
}
|
}
|
|
void ProcessOptions(ParserOptions* parser_options) {
|
compiler_options_->compile_pic_ = true; // All AOT compilation is PIC.
|
DCHECK(compiler_options_->image_type_ == CompilerOptions::ImageType::kNone);
|
if (!image_filenames_.empty()) {
|
if (android::base::EndsWith(image_filenames_[0], "apex.art")) {
|
compiler_options_->image_type_ = CompilerOptions::ImageType::kApexBootImage;
|
} else {
|
compiler_options_->image_type_ = CompilerOptions::ImageType::kBootImage;
|
}
|
}
|
if (app_image_fd_ != -1 || !app_image_file_name_.empty()) {
|
if (compiler_options_->IsBootImage()) {
|
Usage("Can't have both --image and (--app-image-fd or --app-image-file)");
|
}
|
compiler_options_->image_type_ = CompilerOptions::ImageType::kAppImage;
|
}
|
|
if (oat_filenames_.empty() && oat_fd_ == -1) {
|
Usage("Output must be supplied with either --oat-file or --oat-fd");
|
}
|
|
if (input_vdex_fd_ != -1 && !input_vdex_.empty()) {
|
Usage("Can't have both --input-vdex-fd and --input-vdex");
|
}
|
|
if (output_vdex_fd_ != -1 && !output_vdex_.empty()) {
|
Usage("Can't have both --output-vdex-fd and --output-vdex");
|
}
|
|
if (!oat_filenames_.empty() && oat_fd_ != -1) {
|
Usage("--oat-file should not be used with --oat-fd");
|
}
|
|
if ((output_vdex_fd_ == -1) != (oat_fd_ == -1)) {
|
Usage("VDEX and OAT output must be specified either with one --oat-file "
|
"or with --oat-fd and --output-vdex-fd file descriptors");
|
}
|
|
if (!parser_options->oat_symbols.empty() && oat_fd_ != -1) {
|
Usage("--oat-symbols should not be used with --oat-fd");
|
}
|
|
if (!parser_options->oat_symbols.empty() && is_host_) {
|
Usage("--oat-symbols should not be used with --host");
|
}
|
|
if (output_vdex_fd_ != -1 && !image_filenames_.empty()) {
|
Usage("--output-vdex-fd should not be used with --image");
|
}
|
|
if (oat_fd_ != -1 && !image_filenames_.empty()) {
|
Usage("--oat-fd should not be used with --image");
|
}
|
|
if ((input_vdex_fd_ != -1 || !input_vdex_.empty()) &&
|
(dm_fd_ != -1 || !dm_file_location_.empty())) {
|
Usage("An input vdex should not be passed with a .dm file");
|
}
|
|
if (!parser_options->oat_symbols.empty() &&
|
parser_options->oat_symbols.size() != oat_filenames_.size()) {
|
Usage("--oat-file arguments do not match --oat-symbols arguments");
|
}
|
|
if (!image_filenames_.empty() && image_filenames_.size() != oat_filenames_.size()) {
|
Usage("--oat-file arguments do not match --image arguments");
|
}
|
|
if (android_root_.empty()) {
|
const char* android_root_env_var = getenv("ANDROID_ROOT");
|
if (android_root_env_var == nullptr) {
|
Usage("--android-root unspecified and ANDROID_ROOT not set");
|
}
|
android_root_ += android_root_env_var;
|
}
|
|
if (!IsBootImage() && parser_options->boot_image_filename.empty()) {
|
parser_options->boot_image_filename = GetDefaultBootImageLocation(android_root_);
|
}
|
if (!parser_options->boot_image_filename.empty()) {
|
boot_image_filename_ = parser_options->boot_image_filename;
|
}
|
|
if (image_classes_filename_ != nullptr && !IsBootImage()) {
|
Usage("--image-classes should only be used with --image");
|
}
|
|
if (image_classes_filename_ != nullptr && !boot_image_filename_.empty()) {
|
Usage("--image-classes should not be used with --boot-image");
|
}
|
|
if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) {
|
Usage("--image-classes-zip should be used with --image-classes");
|
}
|
|
if (dex_filenames_.empty() && zip_fd_ == -1) {
|
Usage("Input must be supplied with either --dex-file or --zip-fd");
|
}
|
|
if (!dex_filenames_.empty() && zip_fd_ != -1) {
|
Usage("--dex-file should not be used with --zip-fd");
|
}
|
|
if (!dex_filenames_.empty() && !zip_location_.empty()) {
|
Usage("--dex-file should not be used with --zip-location");
|
}
|
|
if (dex_locations_.empty()) {
|
dex_locations_ = dex_filenames_;
|
} else if (dex_locations_.size() != dex_filenames_.size()) {
|
Usage("--dex-location arguments do not match --dex-file arguments");
|
}
|
|
if (!dex_filenames_.empty() && !oat_filenames_.empty()) {
|
if (oat_filenames_.size() != 1 && oat_filenames_.size() != dex_filenames_.size()) {
|
Usage("--oat-file arguments must be singular or match --dex-file arguments");
|
}
|
}
|
|
if (zip_fd_ != -1 && zip_location_.empty()) {
|
Usage("--zip-location should be supplied with --zip-fd");
|
}
|
|
if (boot_image_filename_.empty()) {
|
if (image_base_ == 0) {
|
Usage("Non-zero --base not specified");
|
}
|
}
|
|
const bool have_profile_file = !profile_file_.empty();
|
const bool have_profile_fd = profile_file_fd_ != kInvalidFd;
|
if (have_profile_file && have_profile_fd) {
|
Usage("Profile file should not be specified with both --profile-file-fd and --profile-file");
|
}
|
|
if (have_profile_file || have_profile_fd) {
|
if (image_classes_filename_ != nullptr ||
|
image_classes_zip_filename_ != nullptr) {
|
Usage("Profile based image creation is not supported with image or compiled classes");
|
}
|
}
|
|
if (!parser_options->oat_symbols.empty()) {
|
oat_unstripped_ = std::move(parser_options->oat_symbols);
|
}
|
|
if (compiler_options_->instruction_set_features_ == nullptr) {
|
// '--instruction-set-features/--instruction-set-variant' were not used.
|
// Use features for the 'default' variant.
|
compiler_options_->instruction_set_features_ = InstructionSetFeatures::FromVariant(
|
compiler_options_->instruction_set_, "default", &parser_options->error_msg);
|
if (compiler_options_->instruction_set_features_ == nullptr) {
|
Usage("Problem initializing default instruction set features variant: %s",
|
parser_options->error_msg.c_str());
|
}
|
}
|
|
if (compiler_options_->instruction_set_ == kRuntimeISA) {
|
std::unique_ptr<const InstructionSetFeatures> runtime_features(
|
InstructionSetFeatures::FromCppDefines());
|
if (!compiler_options_->GetInstructionSetFeatures()->Equals(runtime_features.get())) {
|
LOG(WARNING) << "Mismatch between dex2oat instruction set features to use ("
|
<< *compiler_options_->GetInstructionSetFeatures()
|
<< ") and those from CPP defines (" << *runtime_features
|
<< ") for the command line:\n" << CommandLine();
|
}
|
}
|
|
if (compiler_options_->inline_max_code_units_ == CompilerOptions::kUnsetInlineMaxCodeUnits) {
|
compiler_options_->inline_max_code_units_ = CompilerOptions::kDefaultInlineMaxCodeUnits;
|
}
|
|
// Checks are all explicit until we know the architecture.
|
// Set the compilation target's implicit checks options.
|
switch (compiler_options_->GetInstructionSet()) {
|
case InstructionSet::kArm:
|
case InstructionSet::kThumb2:
|
case InstructionSet::kArm64:
|
case InstructionSet::kX86:
|
case InstructionSet::kX86_64:
|
case InstructionSet::kMips:
|
case InstructionSet::kMips64:
|
compiler_options_->implicit_null_checks_ = true;
|
compiler_options_->implicit_so_checks_ = true;
|
break;
|
|
default:
|
// Defaults are correct.
|
break;
|
}
|
|
// Done with usage checks, enable watchdog if requested
|
if (parser_options->watch_dog_enabled) {
|
int64_t timeout = parser_options->watch_dog_timeout_in_ms > 0
|
? parser_options->watch_dog_timeout_in_ms
|
: WatchDog::kDefaultWatchdogTimeoutInMS;
|
watchdog_.reset(new WatchDog(timeout));
|
}
|
|
// Fill some values into the key-value store for the oat header.
|
key_value_store_.reset(new SafeMap<std::string, std::string>());
|
|
// Automatically force determinism for the boot image in a host build if read barriers
|
// are enabled, or if the default GC is CMS or MS. When the default GC is CMS
|
// (Concurrent Mark-Sweep), the GC is switched to a non-concurrent one by passing the
|
// option `-Xgc:nonconcurrent` (see below).
|
if (!kIsTargetBuild && IsBootImage()) {
|
if (SupportsDeterministicCompilation()) {
|
force_determinism_ = true;
|
} else {
|
LOG(WARNING) << "Deterministic compilation is disabled.";
|
}
|
}
|
compiler_options_->force_determinism_ = force_determinism_;
|
|
if (passes_to_run_filename_ != nullptr) {
|
passes_to_run_ = ReadCommentedInputFromFile<std::vector<std::string>>(
|
passes_to_run_filename_,
|
nullptr); // No post-processing.
|
if (passes_to_run_.get() == nullptr) {
|
Usage("Failed to read list of passes to run.");
|
}
|
}
|
compiler_options_->passes_to_run_ = passes_to_run_.get();
|
compiler_options_->compiling_with_core_image_ =
|
!boot_image_filename_.empty() &&
|
CompilerOptions::IsCoreImageFilename(boot_image_filename_);
|
}
|
|
static bool SupportsDeterministicCompilation() {
|
return (kUseReadBarrier ||
|
gc::kCollectorTypeDefault == gc::kCollectorTypeCMS ||
|
gc::kCollectorTypeDefault == gc::kCollectorTypeMS);
|
}
|
|
void ExpandOatAndImageFilenames() {
|
if (image_filenames_[0].rfind('/') == std::string::npos) {
|
Usage("Unusable boot image filename %s", image_filenames_[0].c_str());
|
}
|
image_filenames_ = ImageSpace::ExpandMultiImageLocations(dex_locations_, image_filenames_[0]);
|
|
if (oat_filenames_[0].rfind('/') == std::string::npos) {
|
Usage("Unusable boot image oat filename %s", oat_filenames_[0].c_str());
|
}
|
oat_filenames_ = ImageSpace::ExpandMultiImageLocations(dex_locations_, oat_filenames_[0]);
|
|
if (!oat_unstripped_.empty()) {
|
if (oat_unstripped_[0].rfind('/') == std::string::npos) {
|
Usage("Unusable boot image symbol filename %s", oat_unstripped_[0].c_str());
|
}
|
oat_unstripped_ = ImageSpace::ExpandMultiImageLocations(dex_locations_, oat_unstripped_[0]);
|
}
|
}
|
|
void InsertCompileOptions(int argc, char** argv) {
|
if (!avoid_storing_invocation_) {
|
std::ostringstream oss;
|
for (int i = 0; i < argc; ++i) {
|
if (i > 0) {
|
oss << ' ';
|
}
|
oss << argv[i];
|
}
|
key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str());
|
}
|
key_value_store_->Put(
|
OatHeader::kDebuggableKey,
|
compiler_options_->debuggable_ ? OatHeader::kTrueValue : OatHeader::kFalseValue);
|
key_value_store_->Put(
|
OatHeader::kNativeDebuggableKey,
|
compiler_options_->GetNativeDebuggable() ? OatHeader::kTrueValue : OatHeader::kFalseValue);
|
key_value_store_->Put(OatHeader::kCompilerFilter,
|
CompilerFilter::NameOfFilter(compiler_options_->GetCompilerFilter()));
|
key_value_store_->Put(OatHeader::kConcurrentCopying,
|
kUseReadBarrier ? OatHeader::kTrueValue : OatHeader::kFalseValue);
|
if (invocation_file_.get() != -1) {
|
std::ostringstream oss;
|
for (int i = 0; i < argc; ++i) {
|
if (i > 0) {
|
oss << std::endl;
|
}
|
oss << argv[i];
|
}
|
std::string invocation(oss.str());
|
if (TEMP_FAILURE_RETRY(write(invocation_file_.get(),
|
invocation.c_str(),
|
invocation.size())) == -1) {
|
Usage("Unable to write invocation file");
|
}
|
}
|
}
|
|
// This simple forward is here so the string specializations below don't look out of place.
|
template <typename T, typename U>
|
void AssignIfExists(Dex2oatArgumentMap& map,
|
const Dex2oatArgumentMap::Key<T>& key,
|
U* out) {
|
map.AssignIfExists(key, out);
|
}
|
|
// Specializations to handle const char* vs std::string.
|
void AssignIfExists(Dex2oatArgumentMap& map,
|
const Dex2oatArgumentMap::Key<std::string>& key,
|
const char** out) {
|
if (map.Exists(key)) {
|
char_backing_storage_.push_front(std::move(*map.Get(key)));
|
*out = char_backing_storage_.front().c_str();
|
}
|
}
|
void AssignIfExists(Dex2oatArgumentMap& map,
|
const Dex2oatArgumentMap::Key<std::vector<std::string>>& key,
|
std::vector<const char*>* out) {
|
if (map.Exists(key)) {
|
for (auto& val : *map.Get(key)) {
|
char_backing_storage_.push_front(std::move(val));
|
out->push_back(char_backing_storage_.front().c_str());
|
}
|
}
|
}
|
|
template <typename T>
|
void AssignTrueIfExists(Dex2oatArgumentMap& map,
|
const Dex2oatArgumentMap::Key<T>& key,
|
bool* out) {
|
if (map.Exists(key)) {
|
*out = true;
|
}
|
}
|
|
// Parse the arguments from the command line. In case of an unrecognized option or impossible
|
// values/combinations, a usage error will be displayed and exit() is called. Thus, if the method
|
// returns, arguments have been successfully parsed.
|
void ParseArgs(int argc, char** argv) {
|
original_argc = argc;
|
original_argv = argv;
|
|
Locks::Init();
|
InitLogging(argv, Runtime::Abort);
|
|
compiler_options_.reset(new CompilerOptions());
|
|
using M = Dex2oatArgumentMap;
|
std::string error_msg;
|
std::unique_ptr<M> args_uptr = M::Parse(argc, const_cast<const char**>(argv), &error_msg);
|
if (args_uptr == nullptr) {
|
Usage("Failed to parse command line: %s", error_msg.c_str());
|
UNREACHABLE();
|
}
|
|
M& args = *args_uptr;
|
|
std::unique_ptr<ParserOptions> parser_options(new ParserOptions());
|
|
AssignIfExists(args, M::CompactDexLevel, &compact_dex_level_);
|
AssignIfExists(args, M::DexFiles, &dex_filenames_);
|
AssignIfExists(args, M::DexLocations, &dex_locations_);
|
AssignIfExists(args, M::OatFiles, &oat_filenames_);
|
AssignIfExists(args, M::OatSymbols, &parser_options->oat_symbols);
|
AssignTrueIfExists(args, M::Strip, &strip_);
|
AssignIfExists(args, M::ImageFilenames, &image_filenames_);
|
AssignIfExists(args, M::ZipFd, &zip_fd_);
|
AssignIfExists(args, M::ZipLocation, &zip_location_);
|
AssignIfExists(args, M::InputVdexFd, &input_vdex_fd_);
|
AssignIfExists(args, M::OutputVdexFd, &output_vdex_fd_);
|
AssignIfExists(args, M::InputVdex, &input_vdex_);
|
AssignIfExists(args, M::OutputVdex, &output_vdex_);
|
AssignIfExists(args, M::DmFd, &dm_fd_);
|
AssignIfExists(args, M::DmFile, &dm_file_location_);
|
AssignIfExists(args, M::OatFd, &oat_fd_);
|
AssignIfExists(args, M::OatLocation, &oat_location_);
|
AssignIfExists(args, M::Watchdog, &parser_options->watch_dog_enabled);
|
AssignIfExists(args, M::WatchdogTimeout, &parser_options->watch_dog_timeout_in_ms);
|
AssignIfExists(args, M::Threads, &thread_count_);
|
AssignIfExists(args, M::ImageClasses, &image_classes_filename_);
|
AssignIfExists(args, M::ImageClassesZip, &image_classes_zip_filename_);
|
AssignIfExists(args, M::Passes, &passes_to_run_filename_);
|
AssignIfExists(args, M::BootImage, &parser_options->boot_image_filename);
|
AssignIfExists(args, M::AndroidRoot, &android_root_);
|
AssignIfExists(args, M::Profile, &profile_file_);
|
AssignIfExists(args, M::ProfileFd, &profile_file_fd_);
|
AssignIfExists(args, M::RuntimeOptions, &runtime_args_);
|
AssignIfExists(args, M::SwapFile, &swap_file_name_);
|
AssignIfExists(args, M::SwapFileFd, &swap_fd_);
|
AssignIfExists(args, M::SwapDexSizeThreshold, &min_dex_file_cumulative_size_for_swap_);
|
AssignIfExists(args, M::SwapDexCountThreshold, &min_dex_files_for_swap_);
|
AssignIfExists(args, M::VeryLargeAppThreshold, &very_large_threshold_);
|
AssignIfExists(args, M::AppImageFile, &app_image_file_name_);
|
AssignIfExists(args, M::AppImageFileFd, &app_image_fd_);
|
AssignIfExists(args, M::NoInlineFrom, &no_inline_from_string_);
|
AssignIfExists(args, M::ClasspathDir, &classpath_dir_);
|
AssignIfExists(args, M::DirtyImageObjects, &dirty_image_objects_filename_);
|
AssignIfExists(args, M::ImageFormat, &image_storage_mode_);
|
AssignIfExists(args, M::CompilationReason, &compilation_reason_);
|
|
AssignIfExists(args, M::Backend, &compiler_kind_);
|
parser_options->requested_specific_compiler = args.Exists(M::Backend);
|
|
AssignIfExists(args, M::TargetInstructionSet, &compiler_options_->instruction_set_);
|
// arm actually means thumb2.
|
if (compiler_options_->instruction_set_ == InstructionSet::kArm) {
|
compiler_options_->instruction_set_ = InstructionSet::kThumb2;
|
}
|
|
AssignTrueIfExists(args, M::Host, &is_host_);
|
AssignTrueIfExists(args, M::AvoidStoringInvocation, &avoid_storing_invocation_);
|
if (args.Exists(M::InvocationFile)) {
|
invocation_file_.reset(open(args.Get(M::InvocationFile)->c_str(),
|
O_CREAT|O_WRONLY|O_TRUNC|O_CLOEXEC,
|
S_IRUSR|S_IWUSR));
|
if (invocation_file_.get() == -1) {
|
int err = errno;
|
Usage("Unable to open invocation file '%s' for writing due to %s.",
|
args.Get(M::InvocationFile)->c_str(), strerror(err));
|
}
|
}
|
AssignIfExists(args, M::CopyDexFiles, ©_dex_files_);
|
|
if (args.Exists(M::ForceDeterminism)) {
|
if (!SupportsDeterministicCompilation()) {
|
Usage("Option --force-determinism requires read barriers or a CMS/MS garbage collector");
|
}
|
force_determinism_ = true;
|
}
|
|
if (args.Exists(M::Base)) {
|
ParseBase(*args.Get(M::Base));
|
}
|
if (args.Exists(M::TargetInstructionSetVariant)) {
|
ParseInstructionSetVariant(*args.Get(M::TargetInstructionSetVariant), parser_options.get());
|
}
|
if (args.Exists(M::TargetInstructionSetFeatures)) {
|
ParseInstructionSetFeatures(*args.Get(M::TargetInstructionSetFeatures), parser_options.get());
|
}
|
if (args.Exists(M::ClassLoaderContext)) {
|
std::string class_loader_context_arg = *args.Get(M::ClassLoaderContext);
|
class_loader_context_ = ClassLoaderContext::Create(class_loader_context_arg);
|
if (class_loader_context_ == nullptr) {
|
Usage("Option --class-loader-context has an incorrect format: %s",
|
class_loader_context_arg.c_str());
|
}
|
if (args.Exists(M::ClassLoaderContextFds)) {
|
std::string str_fds_arg = *args.Get(M::ClassLoaderContextFds);
|
std::vector<std::string> str_fds = android::base::Split(str_fds_arg, ":");
|
for (const std::string& str_fd : str_fds) {
|
class_loader_context_fds_.push_back(std::stoi(str_fd, nullptr, 0));
|
if (class_loader_context_fds_.back() < 0) {
|
Usage("Option --class-loader-context-fds has incorrect format: %s",
|
str_fds_arg.c_str());
|
}
|
}
|
}
|
if (args.Exists(M::StoredClassLoaderContext)) {
|
const std::string stored_context_arg = *args.Get(M::StoredClassLoaderContext);
|
stored_class_loader_context_ = ClassLoaderContext::Create(stored_context_arg);
|
if (stored_class_loader_context_ == nullptr) {
|
Usage("Option --stored-class-loader-context has an incorrect format: %s",
|
stored_context_arg.c_str());
|
} else if (class_loader_context_->VerifyClassLoaderContextMatch(
|
stored_context_arg,
|
/*verify_names*/ false,
|
/*verify_checksums*/ false) != ClassLoaderContext::VerificationResult::kVerifies) {
|
Usage(
|
"Option --stored-class-loader-context '%s' mismatches --class-loader-context '%s'",
|
stored_context_arg.c_str(),
|
class_loader_context_arg.c_str());
|
}
|
}
|
} else if (args.Exists(M::StoredClassLoaderContext)) {
|
Usage("Option --stored-class-loader-context should only be used if "
|
"--class-loader-context is also specified");
|
}
|
|
if (!ReadCompilerOptions(args, compiler_options_.get(), &error_msg)) {
|
Usage(error_msg.c_str());
|
}
|
|
ProcessOptions(parser_options.get());
|
|
// Insert some compiler things.
|
InsertCompileOptions(argc, argv);
|
}
|
|
// Check whether the oat output files are writable, and open them for later. Also open a swap
|
// file, if a name is given.
|
bool OpenFile() {
|
// Prune non-existent dex files now so that we don't create empty oat files for multi-image.
|
PruneNonExistentDexFiles();
|
|
// Expand oat and image filenames for multi image.
|
if (IsBootImage() && image_filenames_.size() == 1) {
|
ExpandOatAndImageFilenames();
|
}
|
|
// OAT and VDEX file handling
|
if (oat_fd_ == -1) {
|
DCHECK(!oat_filenames_.empty());
|
for (const std::string& oat_filename : oat_filenames_) {
|
std::unique_ptr<File> oat_file(OS::CreateEmptyFile(oat_filename.c_str()));
|
if (oat_file == nullptr) {
|
PLOG(ERROR) << "Failed to create oat file: " << oat_filename;
|
return false;
|
}
|
if (fchmod(oat_file->Fd(), 0644) != 0) {
|
PLOG(ERROR) << "Failed to make oat file world readable: " << oat_filename;
|
oat_file->Erase();
|
return false;
|
}
|
oat_files_.push_back(std::move(oat_file));
|
DCHECK_EQ(input_vdex_fd_, -1);
|
if (!input_vdex_.empty()) {
|
std::string error_msg;
|
input_vdex_file_ = VdexFile::Open(input_vdex_,
|
/* writable */ false,
|
/* low_4gb */ false,
|
DoEagerUnquickeningOfVdex(),
|
&error_msg);
|
}
|
|
DCHECK_EQ(output_vdex_fd_, -1);
|
std::string vdex_filename = output_vdex_.empty()
|
? ReplaceFileExtension(oat_filename, "vdex")
|
: output_vdex_;
|
if (vdex_filename == input_vdex_ && output_vdex_.empty()) {
|
update_input_vdex_ = true;
|
std::unique_ptr<File> vdex_file(OS::OpenFileReadWrite(vdex_filename.c_str()));
|
vdex_files_.push_back(std::move(vdex_file));
|
} else {
|
std::unique_ptr<File> vdex_file(OS::CreateEmptyFile(vdex_filename.c_str()));
|
if (vdex_file == nullptr) {
|
PLOG(ERROR) << "Failed to open vdex file: " << vdex_filename;
|
return false;
|
}
|
if (fchmod(vdex_file->Fd(), 0644) != 0) {
|
PLOG(ERROR) << "Failed to make vdex file world readable: " << vdex_filename;
|
vdex_file->Erase();
|
return false;
|
}
|
vdex_files_.push_back(std::move(vdex_file));
|
}
|
}
|
} else {
|
std::unique_ptr<File> oat_file(
|
new File(DupCloexec(oat_fd_), oat_location_, /* check_usage */ true));
|
if (!oat_file->IsOpened()) {
|
PLOG(ERROR) << "Failed to create oat file: " << oat_location_;
|
return false;
|
}
|
if (oat_file->SetLength(0) != 0) {
|
PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed.";
|
oat_file->Erase();
|
return false;
|
}
|
oat_files_.push_back(std::move(oat_file));
|
|
if (input_vdex_fd_ != -1) {
|
struct stat s;
|
int rc = TEMP_FAILURE_RETRY(fstat(input_vdex_fd_, &s));
|
if (rc == -1) {
|
PLOG(WARNING) << "Failed getting length of vdex file";
|
} else {
|
std::string error_msg;
|
input_vdex_file_ = VdexFile::Open(input_vdex_fd_,
|
s.st_size,
|
"vdex",
|
/* writable */ false,
|
/* low_4gb */ false,
|
DoEagerUnquickeningOfVdex(),
|
&error_msg);
|
// If there's any problem with the passed vdex, just warn and proceed
|
// without it.
|
if (input_vdex_file_ == nullptr) {
|
PLOG(WARNING) << "Failed opening vdex file: " << error_msg;
|
}
|
}
|
}
|
|
DCHECK_NE(output_vdex_fd_, -1);
|
std::string vdex_location = ReplaceFileExtension(oat_location_, "vdex");
|
std::unique_ptr<File> vdex_file(new File(
|
DupCloexec(output_vdex_fd_), vdex_location, /* check_usage */ true));
|
if (!vdex_file->IsOpened()) {
|
PLOG(ERROR) << "Failed to create vdex file: " << vdex_location;
|
return false;
|
}
|
if (input_vdex_file_ != nullptr && output_vdex_fd_ == input_vdex_fd_) {
|
update_input_vdex_ = true;
|
} else {
|
if (vdex_file->SetLength(0) != 0) {
|
PLOG(ERROR) << "Truncating vdex file " << vdex_location << " failed.";
|
vdex_file->Erase();
|
return false;
|
}
|
}
|
vdex_files_.push_back(std::move(vdex_file));
|
|
oat_filenames_.push_back(oat_location_);
|
}
|
|
// If we're updating in place a vdex file, be defensive and put an invalid vdex magic in case
|
// dex2oat gets killed.
|
// Note: we're only invalidating the magic data in the file, as dex2oat needs the rest of
|
// the information to remain valid.
|
if (update_input_vdex_) {
|
std::unique_ptr<BufferedOutputStream> vdex_out =
|
std::make_unique<BufferedOutputStream>(
|
std::make_unique<FileOutputStream>(vdex_files_.back().get()));
|
if (!vdex_out->WriteFully(&VdexFile::VerifierDepsHeader::kVdexInvalidMagic,
|
arraysize(VdexFile::VerifierDepsHeader::kVdexInvalidMagic))) {
|
PLOG(ERROR) << "Failed to invalidate vdex header. File: " << vdex_out->GetLocation();
|
return false;
|
}
|
|
if (!vdex_out->Flush()) {
|
PLOG(ERROR) << "Failed to flush stream after invalidating header of vdex file."
|
<< " File: " << vdex_out->GetLocation();
|
return false;
|
}
|
}
|
|
if (dm_fd_ != -1 || !dm_file_location_.empty()) {
|
std::string error_msg;
|
if (dm_fd_ != -1) {
|
dm_file_.reset(ZipArchive::OpenFromFd(dm_fd_, "DexMetadata", &error_msg));
|
} else {
|
dm_file_.reset(ZipArchive::Open(dm_file_location_.c_str(), &error_msg));
|
}
|
if (dm_file_ == nullptr) {
|
LOG(WARNING) << "Could not open DexMetadata archive " << error_msg;
|
}
|
}
|
|
if (dm_file_ != nullptr) {
|
DCHECK(input_vdex_file_ == nullptr);
|
std::string error_msg;
|
static const char* kDexMetadata = "DexMetadata";
|
std::unique_ptr<ZipEntry> zip_entry(dm_file_->Find(VdexFile::kVdexNameInDmFile, &error_msg));
|
if (zip_entry == nullptr) {
|
LOG(INFO) << "No " << VdexFile::kVdexNameInDmFile << " file in DexMetadata archive. "
|
<< "Not doing fast verification.";
|
} else {
|
MemMap input_file = zip_entry->MapDirectlyOrExtract(
|
VdexFile::kVdexNameInDmFile,
|
kDexMetadata,
|
&error_msg,
|
alignof(VdexFile));
|
if (!input_file.IsValid()) {
|
LOG(WARNING) << "Could not open vdex file in DexMetadata archive: " << error_msg;
|
} else {
|
input_vdex_file_ = std::make_unique<VdexFile>(std::move(input_file));
|
VLOG(verifier) << "Doing fast verification with vdex from DexMetadata archive";
|
}
|
}
|
}
|
|
// Swap file handling
|
//
|
// If the swap fd is not -1, we assume this is the file descriptor of an open but unlinked file
|
// that we can use for swap.
|
//
|
// If the swap fd is -1 and we have a swap-file string, open the given file as a swap file. We
|
// will immediately unlink to satisfy the swap fd assumption.
|
if (swap_fd_ == -1 && !swap_file_name_.empty()) {
|
std::unique_ptr<File> swap_file(OS::CreateEmptyFile(swap_file_name_.c_str()));
|
if (swap_file.get() == nullptr) {
|
PLOG(ERROR) << "Failed to create swap file: " << swap_file_name_;
|
return false;
|
}
|
swap_fd_ = swap_file->Release();
|
unlink(swap_file_name_.c_str());
|
}
|
|
return true;
|
}
|
|
void EraseOutputFiles() {
|
for (auto& files : { &vdex_files_, &oat_files_ }) {
|
for (size_t i = 0; i < files->size(); ++i) {
|
if ((*files)[i].get() != nullptr) {
|
(*files)[i]->Erase();
|
(*files)[i].reset();
|
}
|
}
|
}
|
}
|
|
void LoadClassProfileDescriptors() {
|
if (!IsImage()) {
|
return;
|
}
|
if (profile_compilation_info_ != nullptr) {
|
// TODO: The following comment looks outdated or misplaced.
|
// Filter out class path classes since we don't want to include these in the image.
|
HashSet<std::string> image_classes = profile_compilation_info_->GetClassDescriptors(
|
compiler_options_->dex_files_for_oat_file_);
|
VLOG(compiler) << "Loaded " << image_classes.size()
|
<< " image class descriptors from profile";
|
if (VLOG_IS_ON(compiler)) {
|
for (const std::string& s : image_classes) {
|
LOG(INFO) << "Image class " << s;
|
}
|
}
|
// Note: If we have a profile, classes previously loaded for the --image-classes
|
// option are overwritten here.
|
compiler_options_->image_classes_.swap(image_classes);
|
}
|
}
|
|
// Set up the environment for compilation. Includes starting the runtime and loading/opening the
|
// boot class path.
|
dex2oat::ReturnCode Setup() {
|
TimingLogger::ScopedTiming t("dex2oat Setup", timings_);
|
|
if (!PrepareImageClasses() || !PrepareDirtyObjects()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// Verification results are null since we don't know if we will need them yet as the compler
|
// filter may change.
|
callbacks_.reset(new QuickCompilerCallbacks(
|
IsBootImage() ?
|
CompilerCallbacks::CallbackMode::kCompileBootImage :
|
CompilerCallbacks::CallbackMode::kCompileApp));
|
|
RuntimeArgumentMap runtime_options;
|
if (!PrepareRuntimeOptions(&runtime_options, callbacks_.get())) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
CreateOatWriters();
|
if (!AddDexFileSources()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
if (!compilation_reason_.empty()) {
|
key_value_store_->Put(OatHeader::kCompilationReasonKey, compilation_reason_);
|
}
|
|
if (IsBootImage()) {
|
// If we're compiling the boot image, store the boot classpath into the Key-Value store.
|
// We use this when loading the boot image.
|
key_value_store_->Put(OatHeader::kBootClassPathKey, android::base::Join(dex_locations_, ':'));
|
}
|
|
if (!IsBootImage()) {
|
// When compiling an app, create the runtime early to retrieve
|
// the boot image checksums needed for the oat header.
|
if (!CreateRuntime(std::move(runtime_options))) {
|
return dex2oat::ReturnCode::kCreateRuntime;
|
}
|
|
if (CompilerFilter::DependsOnImageChecksum(compiler_options_->GetCompilerFilter())) {
|
TimingLogger::ScopedTiming t3("Loading image checksum", timings_);
|
Runtime* runtime = Runtime::Current();
|
key_value_store_->Put(OatHeader::kBootClassPathKey,
|
android::base::Join(runtime->GetBootClassPathLocations(), ':'));
|
std::vector<ImageSpace*> image_spaces = runtime->GetHeap()->GetBootImageSpaces();
|
const std::vector<const DexFile*>& bcp_dex_files =
|
runtime->GetClassLinker()->GetBootClassPath();
|
key_value_store_->Put(
|
OatHeader::kBootClassPathChecksumsKey,
|
gc::space::ImageSpace::GetBootClassPathChecksums(image_spaces, bcp_dex_files));
|
}
|
|
// Open dex files for class path.
|
|
if (class_loader_context_ == nullptr) {
|
// If no context was specified use the default one (which is an empty PathClassLoader).
|
class_loader_context_ = ClassLoaderContext::Default();
|
}
|
|
DCHECK_EQ(oat_writers_.size(), 1u);
|
|
// Note: Ideally we would reject context where the source dex files are also
|
// specified in the classpath (as it doesn't make sense). However this is currently
|
// needed for non-prebuild tests and benchmarks which expects on the fly compilation.
|
// Also, for secondary dex files we do not have control on the actual classpath.
|
// Instead of aborting, remove all the source location from the context classpaths.
|
if (class_loader_context_->RemoveLocationsFromClassPaths(
|
oat_writers_[0]->GetSourceLocations())) {
|
LOG(WARNING) << "The source files to be compiled are also in the classpath.";
|
}
|
|
// We need to open the dex files before encoding the context in the oat file.
|
// (because the encoding adds the dex checksum...)
|
// TODO(calin): consider redesigning this so we don't have to open the dex files before
|
// creating the actual class loader.
|
if (!class_loader_context_->OpenDexFiles(runtime_->GetInstructionSet(),
|
classpath_dir_,
|
class_loader_context_fds_)) {
|
// Do not abort if we couldn't open files from the classpath. They might be
|
// apks without dex files and right now are opening flow will fail them.
|
LOG(WARNING) << "Failed to open classpath dex files";
|
}
|
|
// Store the class loader context in the oat header.
|
// TODO: deprecate this since store_class_loader_context should be enough to cover the users
|
// of classpath_dir as well.
|
std::string class_path_key =
|
class_loader_context_->EncodeContextForOatFile(classpath_dir_,
|
stored_class_loader_context_.get());
|
key_value_store_->Put(OatHeader::kClassPathKey, class_path_key);
|
}
|
|
// Now that we have finalized key_value_store_, start writing the oat file.
|
{
|
TimingLogger::ScopedTiming t_dex("Writing and opening dex files", timings_);
|
rodata_.reserve(oat_writers_.size());
|
for (size_t i = 0, size = oat_writers_.size(); i != size; ++i) {
|
rodata_.push_back(elf_writers_[i]->StartRoData());
|
// Unzip or copy dex files straight to the oat file.
|
std::vector<MemMap> opened_dex_files_map;
|
std::vector<std::unique_ptr<const DexFile>> opened_dex_files;
|
// No need to verify the dex file when we have a vdex file, which means it was already
|
// verified.
|
const bool verify = (input_vdex_file_ == nullptr);
|
if (!oat_writers_[i]->WriteAndOpenDexFiles(
|
vdex_files_[i].get(),
|
rodata_.back(),
|
(i == 0u) ? key_value_store_.get() : nullptr,
|
verify,
|
update_input_vdex_,
|
copy_dex_files_,
|
&opened_dex_files_map,
|
&opened_dex_files)) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
dex_files_per_oat_file_.push_back(MakeNonOwningPointerVector(opened_dex_files));
|
if (opened_dex_files_map.empty()) {
|
DCHECK(opened_dex_files.empty());
|
} else {
|
for (MemMap& map : opened_dex_files_map) {
|
opened_dex_files_maps_.push_back(std::move(map));
|
}
|
for (std::unique_ptr<const DexFile>& dex_file : opened_dex_files) {
|
dex_file_oat_index_map_.emplace(dex_file.get(), i);
|
opened_dex_files_.push_back(std::move(dex_file));
|
}
|
}
|
}
|
}
|
|
compiler_options_->dex_files_for_oat_file_ = MakeNonOwningPointerVector(opened_dex_files_);
|
const std::vector<const DexFile*>& dex_files = compiler_options_->dex_files_for_oat_file_;
|
|
// If we need to downgrade the compiler-filter for size reasons.
|
if (!IsBootImage() && IsVeryLarge(dex_files)) {
|
// Disable app image to make sure dex2oat unloading is enabled.
|
compiler_options_->image_type_ = CompilerOptions::ImageType::kNone;
|
|
// If we need to downgrade the compiler-filter for size reasons, do that early before we read
|
// it below for creating verification callbacks.
|
if (!CompilerFilter::IsAsGoodAs(kLargeAppFilter, compiler_options_->GetCompilerFilter())) {
|
LOG(INFO) << "Very large app, downgrading to verify.";
|
// Note: this change won't be reflected in the key-value store, as that had to be
|
// finalized before loading the dex files. This setup is currently required
|
// to get the size from the DexFile objects.
|
// TODO: refactor. b/29790079
|
compiler_options_->SetCompilerFilter(kLargeAppFilter);
|
}
|
}
|
|
if (CompilerFilter::IsAnyCompilationEnabled(compiler_options_->GetCompilerFilter())) {
|
// Only modes with compilation require verification results, do this here instead of when we
|
// create the compilation callbacks since the compilation mode may have been changed by the
|
// very large app logic.
|
// Avoiding setting the verification results saves RAM by not adding the dex files later in
|
// the function.
|
verification_results_.reset(new VerificationResults(compiler_options_.get()));
|
callbacks_->SetVerificationResults(verification_results_.get());
|
}
|
|
// We had to postpone the swap decision till now, as this is the point when we actually
|
// know about the dex files we're going to use.
|
|
// Make sure that we didn't create the driver, yet.
|
CHECK(driver_ == nullptr);
|
// If we use a swap file, ensure we are above the threshold to make it necessary.
|
if (swap_fd_ != -1) {
|
if (!UseSwap(IsBootImage(), dex_files)) {
|
close(swap_fd_);
|
swap_fd_ = -1;
|
VLOG(compiler) << "Decided to run without swap.";
|
} else {
|
LOG(INFO) << "Large app, accepted running with swap.";
|
}
|
}
|
// Note that dex2oat won't close the swap_fd_. The compiler driver's swap space will do that.
|
if (IsBootImage()) {
|
// For boot image, pass opened dex files to the Runtime::Create().
|
// Note: Runtime acquires ownership of these dex files.
|
runtime_options.Set(RuntimeArgumentMap::BootClassPathDexList, &opened_dex_files_);
|
if (!CreateRuntime(std::move(runtime_options))) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
}
|
|
// If we're doing the image, override the compiler filter to force full compilation. Must be
|
// done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force
|
// compilation of class initializers.
|
// Whilst we're in native take the opportunity to initialize well known classes.
|
Thread* self = Thread::Current();
|
WellKnownClasses::Init(self->GetJniEnv());
|
|
if (!IsBootImage()) {
|
constexpr bool kSaveDexInput = false;
|
if (kSaveDexInput) {
|
SaveDexInput();
|
}
|
}
|
|
// Ensure opened dex files are writable for dex-to-dex transformations.
|
for (MemMap& map : opened_dex_files_maps_) {
|
if (!map.Protect(PROT_READ | PROT_WRITE)) {
|
PLOG(ERROR) << "Failed to make .dex files writeable.";
|
return dex2oat::ReturnCode::kOther;
|
}
|
}
|
|
// Verification results are only required for modes that have any compilation. Avoid
|
// adding the dex files if possible to prevent allocating large arrays.
|
if (verification_results_ != nullptr) {
|
for (const auto& dex_file : dex_files) {
|
// Pre-register dex files so that we can access verification results without locks during
|
// compilation and verification.
|
verification_results_->AddDexFile(dex_file);
|
}
|
}
|
|
return dex2oat::ReturnCode::kNoFailure;
|
}
|
|
// If we need to keep the oat file open for the image writer.
|
bool ShouldKeepOatFileOpen() const {
|
return IsImage() && oat_fd_ != kInvalidFd;
|
}
|
|
// Doesn't return the class loader since it's not meant to be used for image compilation.
|
void CompileDexFilesIndividually() {
|
CHECK(!IsImage()) << "Not supported with image";
|
for (const DexFile* dex_file : compiler_options_->dex_files_for_oat_file_) {
|
std::vector<const DexFile*> dex_files(1u, dex_file);
|
VLOG(compiler) << "Compiling " << dex_file->GetLocation();
|
jobject class_loader = CompileDexFiles(dex_files);
|
CHECK(class_loader != nullptr);
|
ScopedObjectAccess soa(Thread::Current());
|
// Unload class loader to free RAM.
|
jweak weak_class_loader = soa.Env()->GetVm()->AddWeakGlobalRef(
|
soa.Self(),
|
soa.Decode<mirror::ClassLoader>(class_loader));
|
soa.Env()->GetVm()->DeleteGlobalRef(soa.Self(), class_loader);
|
runtime_->GetHeap()->CollectGarbage(/* clear_soft_references */ true);
|
ObjPtr<mirror::ClassLoader> decoded_weak = soa.Decode<mirror::ClassLoader>(weak_class_loader);
|
if (decoded_weak != nullptr) {
|
LOG(FATAL) << "Failed to unload class loader, path from root set: "
|
<< runtime_->GetHeap()->GetVerification()->FirstPathFromRootSet(decoded_weak);
|
}
|
VLOG(compiler) << "Unloaded classloader";
|
}
|
}
|
|
bool ShouldCompileDexFilesIndividually() const {
|
// Compile individually if we are:
|
// 1. not building an image,
|
// 2. not verifying a vdex file,
|
// 3. using multidex,
|
// 4. not doing any AOT compilation.
|
// This means extract, no-vdex verify, and quicken, will use the individual compilation
|
// mode (to reduce RAM used by the compiler).
|
return !IsImage() &&
|
!update_input_vdex_ &&
|
compiler_options_->dex_files_for_oat_file_.size() > 1 &&
|
!CompilerFilter::IsAotCompilationEnabled(compiler_options_->GetCompilerFilter());
|
}
|
|
// Set up and create the compiler driver and then invoke it to compile all the dex files.
|
jobject Compile() {
|
ClassLinker* const class_linker = Runtime::Current()->GetClassLinker();
|
|
TimingLogger::ScopedTiming t("dex2oat Compile", timings_);
|
|
// Find the dex files we should not inline from.
|
std::vector<std::string> no_inline_filters;
|
Split(no_inline_from_string_, ',', &no_inline_filters);
|
|
// For now, on the host always have core-oj removed.
|
const std::string core_oj = "core-oj";
|
if (!kIsTargetBuild && !ContainsElement(no_inline_filters, core_oj)) {
|
no_inline_filters.push_back(core_oj);
|
}
|
|
if (!no_inline_filters.empty()) {
|
std::vector<const DexFile*> class_path_files;
|
if (!IsBootImage()) {
|
// The class loader context is used only for apps.
|
class_path_files = class_loader_context_->FlattenOpenedDexFiles();
|
}
|
|
const std::vector<const DexFile*>& dex_files = compiler_options_->dex_files_for_oat_file_;
|
std::vector<const DexFile*> no_inline_from_dex_files;
|
const std::vector<const DexFile*>* dex_file_vectors[] = {
|
&class_linker->GetBootClassPath(),
|
&class_path_files,
|
&dex_files
|
};
|
for (const std::vector<const DexFile*>* dex_file_vector : dex_file_vectors) {
|
for (const DexFile* dex_file : *dex_file_vector) {
|
for (const std::string& filter : no_inline_filters) {
|
// Use dex_file->GetLocation() rather than dex_file->GetBaseLocation(). This
|
// allows tests to specify <test-dexfile>!classes2.dex if needed but if the
|
// base location passes the StartsWith() test, so do all extra locations.
|
std::string dex_location = dex_file->GetLocation();
|
if (filter.find('/') == std::string::npos) {
|
// The filter does not contain the path. Remove the path from dex_location as well.
|
size_t last_slash = dex_file->GetLocation().rfind('/');
|
if (last_slash != std::string::npos) {
|
dex_location = dex_location.substr(last_slash + 1);
|
}
|
}
|
|
if (android::base::StartsWith(dex_location, filter.c_str())) {
|
VLOG(compiler) << "Disabling inlining from " << dex_file->GetLocation();
|
no_inline_from_dex_files.push_back(dex_file);
|
break;
|
}
|
}
|
}
|
}
|
if (!no_inline_from_dex_files.empty()) {
|
compiler_options_->no_inline_from_.swap(no_inline_from_dex_files);
|
}
|
}
|
compiler_options_->profile_compilation_info_ = profile_compilation_info_.get();
|
|
driver_.reset(new CompilerDriver(compiler_options_.get(),
|
compiler_kind_,
|
thread_count_,
|
swap_fd_));
|
if (!IsBootImage()) {
|
driver_->SetClasspathDexFiles(class_loader_context_->FlattenOpenedDexFiles());
|
}
|
|
const bool compile_individually = ShouldCompileDexFilesIndividually();
|
if (compile_individually) {
|
// Set the compiler driver in the callbacks so that we can avoid re-verification. This not
|
// only helps performance but also prevents reverifying quickened bytecodes. Attempting
|
// verify quickened bytecode causes verification failures.
|
// Only set the compiler filter if we are doing separate compilation since there is a bit
|
// of overhead when checking if a class was previously verified.
|
callbacks_->SetDoesClassUnloading(true, driver_.get());
|
}
|
|
// Setup vdex for compilation.
|
const std::vector<const DexFile*>& dex_files = compiler_options_->dex_files_for_oat_file_;
|
if (!DoEagerUnquickeningOfVdex() && input_vdex_file_ != nullptr) {
|
callbacks_->SetVerifierDeps(
|
new verifier::VerifierDeps(dex_files, input_vdex_file_->GetVerifierDepsData()));
|
|
// TODO: we unquicken unconditionally, as we don't know
|
// if the boot image has changed. How exactly we'll know is under
|
// experimentation.
|
TimingLogger::ScopedTiming time_unquicken("Unquicken", timings_);
|
|
// We do not decompile a RETURN_VOID_NO_BARRIER into a RETURN_VOID, as the quickening
|
// optimization does not depend on the boot image (the optimization relies on not
|
// having final fields in a class, which does not change for an app).
|
input_vdex_file_->Unquicken(dex_files, /* decompile_return_instruction */ false);
|
} else {
|
// Create the main VerifierDeps, here instead of in the compiler since we want to aggregate
|
// the results for all the dex files, not just the results for the current dex file.
|
callbacks_->SetVerifierDeps(new verifier::VerifierDeps(dex_files));
|
}
|
// Invoke the compilation.
|
if (compile_individually) {
|
CompileDexFilesIndividually();
|
// Return a null classloader since we already freed released it.
|
return nullptr;
|
}
|
return CompileDexFiles(dex_files);
|
}
|
|
// Create the class loader, use it to compile, and return.
|
jobject CompileDexFiles(const std::vector<const DexFile*>& dex_files) {
|
ClassLinker* const class_linker = Runtime::Current()->GetClassLinker();
|
|
jobject class_loader = nullptr;
|
if (!IsBootImage()) {
|
class_loader =
|
class_loader_context_->CreateClassLoader(compiler_options_->dex_files_for_oat_file_);
|
callbacks_->SetDexFiles(&dex_files);
|
}
|
|
// Register dex caches and key them to the class loader so that they only unload when the
|
// class loader unloads.
|
for (const auto& dex_file : dex_files) {
|
ScopedObjectAccess soa(Thread::Current());
|
// Registering the dex cache adds a strong root in the class loader that prevents the dex
|
// cache from being unloaded early.
|
ObjPtr<mirror::DexCache> dex_cache = class_linker->RegisterDexFile(
|
*dex_file,
|
soa.Decode<mirror::ClassLoader>(class_loader));
|
if (dex_cache == nullptr) {
|
soa.Self()->AssertPendingException();
|
LOG(FATAL) << "Failed to register dex file " << dex_file->GetLocation() << " "
|
<< soa.Self()->GetException()->Dump();
|
}
|
}
|
driver_->InitializeThreadPools();
|
driver_->PreCompile(class_loader,
|
dex_files,
|
timings_,
|
&compiler_options_->image_classes_,
|
verification_results_.get());
|
callbacks_->SetVerificationResults(nullptr); // Should not be needed anymore.
|
compiler_options_->verification_results_ = verification_results_.get();
|
driver_->CompileAll(class_loader, dex_files, timings_);
|
driver_->FreeThreadPools();
|
return class_loader;
|
}
|
|
// Notes on the interleaving of creating the images and oat files to
|
// ensure the references between the two are correct.
|
//
|
// Currently we have a memory layout that looks something like this:
|
//
|
// +--------------+
|
// | images |
|
// +--------------+
|
// | oat files |
|
// +--------------+
|
// | alloc spaces |
|
// +--------------+
|
//
|
// There are several constraints on the loading of the images and oat files.
|
//
|
// 1. The images are expected to be loaded at an absolute address and
|
// contain Objects with absolute pointers within the images.
|
//
|
// 2. There are absolute pointers from Methods in the images to their
|
// code in the oat files.
|
//
|
// 3. There are absolute pointers from the code in the oat files to Methods
|
// in the images.
|
//
|
// 4. There are absolute pointers from code in the oat files to other code
|
// in the oat files.
|
//
|
// To get this all correct, we go through several steps.
|
//
|
// 1. We prepare offsets for all data in the oat files and calculate
|
// the oat data size and code size. During this stage, we also set
|
// oat code offsets in methods for use by the image writer.
|
//
|
// 2. We prepare offsets for the objects in the images and calculate
|
// the image sizes.
|
//
|
// 3. We create the oat files. Originally this was just our own proprietary
|
// file but now it is contained within an ELF dynamic object (aka an .so
|
// file). Since we know the image sizes and oat data sizes and code sizes we
|
// can prepare the ELF headers and we then know the ELF memory segment
|
// layout and we can now resolve all references. The compiler provides
|
// LinkerPatch information in each CompiledMethod and we resolve these,
|
// using the layout information and image object locations provided by
|
// image writer, as we're writing the method code.
|
//
|
// 4. We create the image files. They need to know where the oat files
|
// will be loaded after itself. Originally oat files were simply
|
// memory mapped so we could predict where their contents were based
|
// on the file size. Now that they are ELF files, we need to inspect
|
// the ELF files to understand the in memory segment layout including
|
// where the oat header is located within.
|
// TODO: We could just remember this information from step 3.
|
//
|
// 5. We fixup the ELF program headers so that dlopen will try to
|
// load the .so at the desired location at runtime by offsetting the
|
// Elf32_Phdr.p_vaddr values by the desired base address.
|
// TODO: Do this in step 3. We already know the layout there.
|
//
|
// Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5.
|
// are done by the CreateImageFile() below.
|
|
// Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the
|
// ImageWriter, if necessary.
|
// Note: Flushing (and closing) the file is the caller's responsibility, except for the failure
|
// case (when the file will be explicitly erased).
|
bool WriteOutputFiles(jobject class_loader) {
|
TimingLogger::ScopedTiming t("dex2oat Oat", timings_);
|
|
// Sync the data to the file, in case we did dex2dex transformations.
|
for (MemMap& map : opened_dex_files_maps_) {
|
if (!map.Sync()) {
|
PLOG(ERROR) << "Failed to Sync() dex2dex output. Map: " << map.GetName();
|
return false;
|
}
|
}
|
|
if (IsImage()) {
|
if (IsAppImage() && image_base_ == 0) {
|
gc::Heap* const heap = Runtime::Current()->GetHeap();
|
for (ImageSpace* image_space : heap->GetBootImageSpaces()) {
|
image_base_ = std::max(image_base_, RoundUp(
|
reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatFileEnd()),
|
kPageSize));
|
}
|
// The non moving space is right after the oat file. Put the preferred app image location
|
// right after the non moving space so that we ideally get a continuous immune region for
|
// the GC.
|
// Use the default non moving space capacity since dex2oat does not have a separate non-
|
// moving space. This means the runtime's non moving space space size will be as large
|
// as the growth limit for dex2oat, but smaller in the zygote.
|
const size_t non_moving_space_capacity = gc::Heap::kDefaultNonMovingSpaceCapacity;
|
image_base_ += non_moving_space_capacity;
|
VLOG(compiler) << "App image base=" << reinterpret_cast<void*>(image_base_);
|
}
|
|
image_writer_.reset(new linker::ImageWriter(*compiler_options_,
|
image_base_,
|
image_storage_mode_,
|
oat_filenames_,
|
dex_file_oat_index_map_,
|
class_loader,
|
dirty_image_objects_.get()));
|
|
// We need to prepare method offsets in the image address space for direct method patching.
|
TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_);
|
if (!image_writer_->PrepareImageAddressSpace(timings_)) {
|
LOG(ERROR) << "Failed to prepare image address space.";
|
return false;
|
}
|
}
|
|
// Initialize the writers with the compiler driver, image writer, and their
|
// dex files. The writers were created without those being there yet.
|
for (size_t i = 0, size = oat_files_.size(); i != size; ++i) {
|
std::unique_ptr<linker::OatWriter>& oat_writer = oat_writers_[i];
|
std::vector<const DexFile*>& dex_files = dex_files_per_oat_file_[i];
|
oat_writer->Initialize(driver_.get(), image_writer_.get(), dex_files);
|
}
|
|
{
|
TimingLogger::ScopedTiming t2("dex2oat Write VDEX", timings_);
|
DCHECK(IsBootImage() || oat_files_.size() == 1u);
|
verifier::VerifierDeps* verifier_deps = callbacks_->GetVerifierDeps();
|
for (size_t i = 0, size = oat_files_.size(); i != size; ++i) {
|
File* vdex_file = vdex_files_[i].get();
|
std::unique_ptr<BufferedOutputStream> vdex_out =
|
std::make_unique<BufferedOutputStream>(
|
std::make_unique<FileOutputStream>(vdex_file));
|
|
if (!oat_writers_[i]->WriteVerifierDeps(vdex_out.get(), verifier_deps)) {
|
LOG(ERROR) << "Failed to write verifier dependencies into VDEX " << vdex_file->GetPath();
|
return false;
|
}
|
|
if (!oat_writers_[i]->WriteQuickeningInfo(vdex_out.get())) {
|
LOG(ERROR) << "Failed to write quickening info into VDEX " << vdex_file->GetPath();
|
return false;
|
}
|
|
// VDEX finalized, seek back to the beginning and write checksums and the header.
|
if (!oat_writers_[i]->WriteChecksumsAndVdexHeader(vdex_out.get())) {
|
LOG(ERROR) << "Failed to write vdex header into VDEX " << vdex_file->GetPath();
|
return false;
|
}
|
}
|
}
|
|
{
|
TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_);
|
linker::MultiOatRelativePatcher patcher(compiler_options_->GetInstructionSet(),
|
compiler_options_->GetInstructionSetFeatures(),
|
driver_->GetCompiledMethodStorage());
|
for (size_t i = 0, size = oat_files_.size(); i != size; ++i) {
|
std::unique_ptr<linker::ElfWriter>& elf_writer = elf_writers_[i];
|
std::unique_ptr<linker::OatWriter>& oat_writer = oat_writers_[i];
|
|
oat_writer->PrepareLayout(&patcher);
|
elf_writer->PrepareDynamicSection(oat_writer->GetOatHeader().GetExecutableOffset(),
|
oat_writer->GetCodeSize(),
|
oat_writer->GetDataBimgRelRoSize(),
|
oat_writer->GetBssSize(),
|
oat_writer->GetBssMethodsOffset(),
|
oat_writer->GetBssRootsOffset(),
|
oat_writer->GetVdexSize());
|
if (IsImage()) {
|
// Update oat layout.
|
DCHECK(image_writer_ != nullptr);
|
DCHECK_LT(i, oat_filenames_.size());
|
image_writer_->UpdateOatFileLayout(i,
|
elf_writer->GetLoadedSize(),
|
oat_writer->GetOatDataOffset(),
|
oat_writer->GetOatSize());
|
}
|
}
|
|
for (size_t i = 0, size = oat_files_.size(); i != size; ++i) {
|
std::unique_ptr<File>& oat_file = oat_files_[i];
|
std::unique_ptr<linker::ElfWriter>& elf_writer = elf_writers_[i];
|
std::unique_ptr<linker::OatWriter>& oat_writer = oat_writers_[i];
|
|
// We need to mirror the layout of the ELF file in the compressed debug-info.
|
// Therefore PrepareDebugInfo() relies on the SetLoadedSectionSizes() call further above.
|
debug::DebugInfo debug_info = oat_writer->GetDebugInfo(); // Keep the variable alive.
|
elf_writer->PrepareDebugInfo(debug_info); // Processes the data on background thread.
|
|
OutputStream*& rodata = rodata_[i];
|
DCHECK(rodata != nullptr);
|
if (!oat_writer->WriteRodata(rodata)) {
|
LOG(ERROR) << "Failed to write .rodata section to the ELF file " << oat_file->GetPath();
|
return false;
|
}
|
elf_writer->EndRoData(rodata);
|
rodata = nullptr;
|
|
OutputStream* text = elf_writer->StartText();
|
if (!oat_writer->WriteCode(text)) {
|
LOG(ERROR) << "Failed to write .text section to the ELF file " << oat_file->GetPath();
|
return false;
|
}
|
elf_writer->EndText(text);
|
|
if (oat_writer->GetDataBimgRelRoSize() != 0u) {
|
OutputStream* data_bimg_rel_ro = elf_writer->StartDataBimgRelRo();
|
if (!oat_writer->WriteDataBimgRelRo(data_bimg_rel_ro)) {
|
LOG(ERROR) << "Failed to write .data.bimg.rel.ro section to the ELF file "
|
<< oat_file->GetPath();
|
return false;
|
}
|
elf_writer->EndDataBimgRelRo(data_bimg_rel_ro);
|
}
|
|
if (!oat_writer->WriteHeader(elf_writer->GetStream())) {
|
LOG(ERROR) << "Failed to write oat header to the ELF file " << oat_file->GetPath();
|
return false;
|
}
|
|
if (IsImage()) {
|
// Update oat header information.
|
DCHECK(image_writer_ != nullptr);
|
DCHECK_LT(i, oat_filenames_.size());
|
image_writer_->UpdateOatFileHeader(i, oat_writer->GetOatHeader());
|
}
|
|
elf_writer->WriteDynamicSection();
|
elf_writer->WriteDebugInfo(oat_writer->GetDebugInfo());
|
|
if (!elf_writer->End()) {
|
LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath();
|
return false;
|
}
|
|
if (!FlushOutputFile(&vdex_files_[i]) || !FlushOutputFile(&oat_files_[i])) {
|
return false;
|
}
|
|
VLOG(compiler) << "Oat file written successfully: " << oat_filenames_[i];
|
|
oat_writer.reset();
|
// We may still need the ELF writer later for stripping.
|
}
|
}
|
|
return true;
|
}
|
|
// If we are compiling an image, invoke the image creation routine. Else just skip.
|
bool HandleImage() {
|
if (IsImage()) {
|
TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_);
|
if (!CreateImageFile()) {
|
return false;
|
}
|
VLOG(compiler) << "Images written successfully";
|
}
|
return true;
|
}
|
|
// Copy the full oat files to symbols directory and then strip the originals.
|
bool CopyOatFilesToSymbolsDirectoryAndStrip() {
|
for (size_t i = 0; i < oat_unstripped_.size(); ++i) {
|
// If we don't want to strip in place, copy from stripped location to unstripped location.
|
// We need to strip after image creation because FixupElf needs to use .strtab.
|
if (oat_unstripped_[i] != oat_filenames_[i]) {
|
DCHECK(oat_files_[i].get() != nullptr && oat_files_[i]->IsOpened());
|
|
TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_);
|
std::unique_ptr<File>& in = oat_files_[i];
|
std::unique_ptr<File> out(OS::CreateEmptyFile(oat_unstripped_[i].c_str()));
|
int64_t in_length = in->GetLength();
|
if (in_length < 0) {
|
PLOG(ERROR) << "Failed to get the length of oat file: " << in->GetPath();
|
return false;
|
}
|
if (!out->Copy(in.get(), 0, in_length)) {
|
PLOG(ERROR) << "Failed to copy oat file to file: " << out->GetPath();
|
return false;
|
}
|
if (out->FlushCloseOrErase() != 0) {
|
PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_unstripped_[i];
|
return false;
|
}
|
VLOG(compiler) << "Oat file copied successfully (unstripped): " << oat_unstripped_[i];
|
|
if (strip_) {
|
TimingLogger::ScopedTiming t2("dex2oat OatFile strip", timings_);
|
if (!elf_writers_[i]->StripDebugInfo()) {
|
PLOG(ERROR) << "Failed strip oat file: " << in->GetPath();
|
return false;
|
}
|
}
|
}
|
}
|
return true;
|
}
|
|
bool FlushOutputFile(std::unique_ptr<File>* file) {
|
if (file->get() != nullptr) {
|
if (file->get()->Flush() != 0) {
|
PLOG(ERROR) << "Failed to flush output file: " << file->get()->GetPath();
|
return false;
|
}
|
}
|
return true;
|
}
|
|
bool FlushCloseOutputFile(File* file) {
|
if (file != nullptr) {
|
if (file->FlushCloseOrErase() != 0) {
|
PLOG(ERROR) << "Failed to flush and close output file: " << file->GetPath();
|
return false;
|
}
|
}
|
return true;
|
}
|
|
bool FlushOutputFiles() {
|
TimingLogger::ScopedTiming t2("dex2oat Flush Output Files", timings_);
|
for (auto& files : { &vdex_files_, &oat_files_ }) {
|
for (size_t i = 0; i < files->size(); ++i) {
|
if (!FlushOutputFile(&(*files)[i])) {
|
return false;
|
}
|
}
|
}
|
return true;
|
}
|
|
bool FlushCloseOutputFiles() {
|
bool result = true;
|
for (auto& files : { &vdex_files_, &oat_files_ }) {
|
for (size_t i = 0; i < files->size(); ++i) {
|
result &= FlushCloseOutputFile((*files)[i].get());
|
}
|
}
|
return result;
|
}
|
|
void DumpTiming() {
|
if (compiler_options_->GetDumpTimings() ||
|
(kIsDebugBuild && timings_->GetTotalNs() > MsToNs(1000))) {
|
LOG(INFO) << Dumpable<TimingLogger>(*timings_);
|
}
|
}
|
|
bool IsImage() const {
|
return IsAppImage() || IsBootImage();
|
}
|
|
bool IsAppImage() const {
|
return compiler_options_->IsAppImage();
|
}
|
|
bool IsBootImage() const {
|
return compiler_options_->IsBootImage();
|
}
|
|
bool IsHost() const {
|
return is_host_;
|
}
|
|
bool UseProfile() const {
|
return profile_file_fd_ != -1 || !profile_file_.empty();
|
}
|
|
bool DoProfileGuidedOptimizations() const {
|
return UseProfile();
|
}
|
|
bool DoGenerateCompactDex() const {
|
return compact_dex_level_ != CompactDexLevel::kCompactDexLevelNone;
|
}
|
|
bool DoDexLayoutOptimizations() const {
|
return DoProfileGuidedOptimizations() || DoGenerateCompactDex();
|
}
|
|
bool DoOatLayoutOptimizations() const {
|
return DoProfileGuidedOptimizations();
|
}
|
|
bool MayInvalidateVdexMetadata() const {
|
// DexLayout can invalidate the vdex metadata if changing the class def order is enabled, so
|
// we need to unquicken the vdex file eagerly, before passing it to dexlayout.
|
return DoDexLayoutOptimizations();
|
}
|
|
bool DoEagerUnquickeningOfVdex() const {
|
return MayInvalidateVdexMetadata() && dm_file_ == nullptr;
|
}
|
|
bool LoadProfile() {
|
DCHECK(UseProfile());
|
// TODO(calin): We should be using the runtime arena pool (instead of the
|
// default profile arena). However the setup logic is messy and needs
|
// cleaning up before that (e.g. the oat writers are created before the
|
// runtime).
|
profile_compilation_info_.reset(new ProfileCompilationInfo());
|
ScopedFlock profile_file;
|
std::string error;
|
if (profile_file_fd_ != -1) {
|
profile_file = LockedFile::DupOf(profile_file_fd_, "profile",
|
true /* read_only_mode */, &error);
|
} else if (profile_file_ != "") {
|
profile_file = LockedFile::Open(profile_file_.c_str(), O_RDONLY, true, &error);
|
}
|
|
// Return early if we're unable to obtain a lock on the profile.
|
if (profile_file.get() == nullptr) {
|
LOG(ERROR) << "Cannot lock profiles: " << error;
|
return false;
|
}
|
|
if (!profile_compilation_info_->Load(profile_file->Fd())) {
|
profile_compilation_info_.reset(nullptr);
|
return false;
|
}
|
|
return true;
|
}
|
|
private:
|
bool UseSwap(bool is_image, const std::vector<const DexFile*>& dex_files) {
|
if (is_image) {
|
// Don't use swap, we know generation should succeed, and we don't want to slow it down.
|
return false;
|
}
|
if (dex_files.size() < min_dex_files_for_swap_) {
|
// If there are less dex files than the threshold, assume it's gonna be fine.
|
return false;
|
}
|
size_t dex_files_size = 0;
|
for (const auto* dex_file : dex_files) {
|
dex_files_size += dex_file->GetHeader().file_size_;
|
}
|
return dex_files_size >= min_dex_file_cumulative_size_for_swap_;
|
}
|
|
bool IsVeryLarge(const std::vector<const DexFile*>& dex_files) {
|
size_t dex_files_size = 0;
|
for (const auto* dex_file : dex_files) {
|
dex_files_size += dex_file->GetHeader().file_size_;
|
}
|
return dex_files_size >= very_large_threshold_;
|
}
|
|
bool PrepareImageClasses() {
|
// If --image-classes was specified, calculate the full list of classes to include in the image.
|
DCHECK(compiler_options_->image_classes_.empty());
|
if (image_classes_filename_ != nullptr) {
|
std::unique_ptr<HashSet<std::string>> image_classes =
|
ReadClasses(image_classes_zip_filename_, image_classes_filename_, "image");
|
if (image_classes == nullptr) {
|
return false;
|
}
|
compiler_options_->image_classes_.swap(*image_classes);
|
}
|
return true;
|
}
|
|
static std::unique_ptr<HashSet<std::string>> ReadClasses(const char* zip_filename,
|
const char* classes_filename,
|
const char* tag) {
|
std::unique_ptr<HashSet<std::string>> classes;
|
std::string error_msg;
|
if (zip_filename != nullptr) {
|
classes = ReadImageClassesFromZip(zip_filename, classes_filename, &error_msg);
|
} else {
|
classes = ReadImageClassesFromFile(classes_filename);
|
}
|
if (classes == nullptr) {
|
LOG(ERROR) << "Failed to create list of " << tag << " classes from '"
|
<< classes_filename << "': " << error_msg;
|
}
|
return classes;
|
}
|
|
bool PrepareDirtyObjects() {
|
if (dirty_image_objects_filename_ != nullptr) {
|
dirty_image_objects_ = ReadCommentedInputFromFile<HashSet<std::string>>(
|
dirty_image_objects_filename_,
|
nullptr);
|
if (dirty_image_objects_ == nullptr) {
|
LOG(ERROR) << "Failed to create list of dirty objects from '"
|
<< dirty_image_objects_filename_ << "'";
|
return false;
|
}
|
} else {
|
dirty_image_objects_.reset(nullptr);
|
}
|
return true;
|
}
|
|
void PruneNonExistentDexFiles() {
|
DCHECK_EQ(dex_filenames_.size(), dex_locations_.size());
|
size_t kept = 0u;
|
for (size_t i = 0, size = dex_filenames_.size(); i != size; ++i) {
|
if (!OS::FileExists(dex_filenames_[i].c_str())) {
|
LOG(WARNING) << "Skipping non-existent dex file '" << dex_filenames_[i] << "'";
|
} else {
|
if (kept != i) {
|
dex_filenames_[kept] = dex_filenames_[i];
|
dex_locations_[kept] = dex_locations_[i];
|
}
|
++kept;
|
}
|
}
|
dex_filenames_.resize(kept);
|
dex_locations_.resize(kept);
|
}
|
|
bool AddDexFileSources() {
|
TimingLogger::ScopedTiming t2("AddDexFileSources", timings_);
|
if (input_vdex_file_ != nullptr && input_vdex_file_->HasDexSection()) {
|
DCHECK_EQ(oat_writers_.size(), 1u);
|
const std::string& name = zip_location_.empty() ? dex_locations_[0] : zip_location_;
|
DCHECK(!name.empty());
|
if (!oat_writers_[0]->AddVdexDexFilesSource(*input_vdex_file_.get(), name.c_str())) {
|
return false;
|
}
|
} else if (zip_fd_ != -1) {
|
DCHECK_EQ(oat_writers_.size(), 1u);
|
if (!oat_writers_[0]->AddZippedDexFilesSource(File(zip_fd_, /* check_usage */ false),
|
zip_location_.c_str())) {
|
return false;
|
}
|
} else if (oat_writers_.size() > 1u) {
|
// Multi-image.
|
DCHECK_EQ(oat_writers_.size(), dex_filenames_.size());
|
DCHECK_EQ(oat_writers_.size(), dex_locations_.size());
|
for (size_t i = 0, size = oat_writers_.size(); i != size; ++i) {
|
if (!oat_writers_[i]->AddDexFileSource(dex_filenames_[i].c_str(),
|
dex_locations_[i].c_str())) {
|
return false;
|
}
|
}
|
} else {
|
DCHECK_EQ(oat_writers_.size(), 1u);
|
DCHECK_EQ(dex_filenames_.size(), dex_locations_.size());
|
DCHECK_NE(dex_filenames_.size(), 0u);
|
for (size_t i = 0; i != dex_filenames_.size(); ++i) {
|
if (!oat_writers_[0]->AddDexFileSource(dex_filenames_[i].c_str(),
|
dex_locations_[i].c_str())) {
|
return false;
|
}
|
}
|
}
|
return true;
|
}
|
|
void CreateOatWriters() {
|
TimingLogger::ScopedTiming t2("CreateOatWriters", timings_);
|
elf_writers_.reserve(oat_files_.size());
|
oat_writers_.reserve(oat_files_.size());
|
for (const std::unique_ptr<File>& oat_file : oat_files_) {
|
elf_writers_.emplace_back(linker::CreateElfWriterQuick(*compiler_options_, oat_file.get()));
|
elf_writers_.back()->Start();
|
bool do_oat_writer_layout = DoDexLayoutOptimizations() || DoOatLayoutOptimizations();
|
if (profile_compilation_info_ != nullptr && profile_compilation_info_->IsEmpty()) {
|
do_oat_writer_layout = false;
|
}
|
oat_writers_.emplace_back(new linker::OatWriter(
|
*compiler_options_,
|
timings_,
|
do_oat_writer_layout ? profile_compilation_info_.get() : nullptr,
|
compact_dex_level_));
|
}
|
}
|
|
void SaveDexInput() {
|
const std::vector<const DexFile*>& dex_files = compiler_options_->dex_files_for_oat_file_;
|
for (size_t i = 0, size = dex_files.size(); i != size; ++i) {
|
const DexFile* dex_file = dex_files[i];
|
std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex",
|
getpid(), i));
|
std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str()));
|
if (tmp_file.get() == nullptr) {
|
PLOG(ERROR) << "Failed to open file " << tmp_file_name
|
<< ". Try: adb shell chmod 777 /data/local/tmp";
|
continue;
|
}
|
// This is just dumping files for debugging. Ignore errors, and leave remnants.
|
UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size()));
|
UNUSED(tmp_file->Flush());
|
UNUSED(tmp_file->Close());
|
LOG(INFO) << "Wrote input to " << tmp_file_name;
|
}
|
}
|
|
bool PrepareRuntimeOptions(RuntimeArgumentMap* runtime_options,
|
QuickCompilerCallbacks* callbacks) {
|
RuntimeOptions raw_options;
|
if (boot_image_filename_.empty()) {
|
std::string boot_class_path = "-Xbootclasspath:";
|
boot_class_path += android::base::Join(dex_filenames_, ':');
|
raw_options.push_back(std::make_pair(boot_class_path, nullptr));
|
std::string boot_class_path_locations = "-Xbootclasspath-locations:";
|
boot_class_path_locations += android::base::Join(dex_locations_, ':');
|
raw_options.push_back(std::make_pair(boot_class_path_locations, nullptr));
|
} else {
|
std::string boot_image_option = "-Ximage:";
|
boot_image_option += boot_image_filename_;
|
raw_options.push_back(std::make_pair(boot_image_option, nullptr));
|
}
|
for (size_t i = 0; i < runtime_args_.size(); i++) {
|
raw_options.push_back(std::make_pair(runtime_args_[i], nullptr));
|
}
|
|
raw_options.push_back(std::make_pair("compilercallbacks", callbacks));
|
raw_options.push_back(
|
std::make_pair("imageinstructionset",
|
GetInstructionSetString(compiler_options_->GetInstructionSet())));
|
|
// Only allow no boot image for the runtime if we're compiling one. When we compile an app,
|
// we don't want fallback mode, it will abort as we do not push a boot classpath (it might
|
// have been stripped in preopting, anyways).
|
if (!IsBootImage()) {
|
raw_options.push_back(std::make_pair("-Xno-dex-file-fallback", nullptr));
|
}
|
// Never allow implicit image compilation.
|
raw_options.push_back(std::make_pair("-Xnoimage-dex2oat", nullptr));
|
// Disable libsigchain. We don't don't need it during compilation and it prevents us
|
// from getting a statically linked version of dex2oat (because of dlsym and RTLD_NEXT).
|
raw_options.push_back(std::make_pair("-Xno-sig-chain", nullptr));
|
// Disable Hspace compaction to save heap size virtual space.
|
// Only need disable Hspace for OOM becasue background collector is equal to
|
// foreground collector by default for dex2oat.
|
raw_options.push_back(std::make_pair("-XX:DisableHSpaceCompactForOOM", nullptr));
|
|
if (compiler_options_->IsForceDeterminism()) {
|
// If we're asked to be deterministic, ensure non-concurrent GC for determinism.
|
//
|
// Note that with read barriers, this option is ignored, because Runtime::Init
|
// overrides the foreground GC to be gc::kCollectorTypeCC when instantiating
|
// gc::Heap. This is fine, as concurrent GC requests are not honored in dex2oat,
|
// which uses an unstarted runtime.
|
raw_options.push_back(std::make_pair("-Xgc:nonconcurrent", nullptr));
|
|
// The default LOS implementation (map) is not deterministic. So disable it.
|
raw_options.push_back(std::make_pair("-XX:LargeObjectSpace=disabled", nullptr));
|
|
// We also need to turn off the nonmoving space. For that, we need to disable HSpace
|
// compaction (done above) and ensure that neither foreground nor background collectors
|
// are concurrent.
|
//
|
// Likewise, this option is ignored with read barriers because Runtime::Init
|
// overrides the background GC to be gc::kCollectorTypeCCBackground, but that's
|
// fine too, for the same reason (see above).
|
raw_options.push_back(std::make_pair("-XX:BackgroundGC=nonconcurrent", nullptr));
|
|
// To make identity hashcode deterministic, set a known seed.
|
mirror::Object::SetHashCodeSeed(987654321U);
|
}
|
|
if (!Runtime::ParseOptions(raw_options, false, runtime_options)) {
|
LOG(ERROR) << "Failed to parse runtime options";
|
return false;
|
}
|
return true;
|
}
|
|
// Create a runtime necessary for compilation.
|
bool CreateRuntime(RuntimeArgumentMap&& runtime_options) {
|
TimingLogger::ScopedTiming t_runtime("Create runtime", timings_);
|
if (!Runtime::Create(std::move(runtime_options))) {
|
LOG(ERROR) << "Failed to create runtime";
|
return false;
|
}
|
|
// Runtime::Init will rename this thread to be "main". Prefer "dex2oat" so that "top" and
|
// "ps -a" don't change to non-descript "main."
|
SetThreadName(kIsDebugBuild ? "dex2oatd" : "dex2oat");
|
|
runtime_.reset(Runtime::Current());
|
runtime_->SetInstructionSet(compiler_options_->GetInstructionSet());
|
for (uint32_t i = 0; i < static_cast<uint32_t>(CalleeSaveType::kLastCalleeSaveType); ++i) {
|
CalleeSaveType type = CalleeSaveType(i);
|
if (!runtime_->HasCalleeSaveMethod(type)) {
|
runtime_->SetCalleeSaveMethod(runtime_->CreateCalleeSaveMethod(), type);
|
}
|
}
|
|
// Initialize maps for unstarted runtime. This needs to be here, as running clinits needs this
|
// set up.
|
interpreter::UnstartedRuntime::Initialize();
|
|
Thread* self = Thread::Current();
|
runtime_->RunRootClinits(self);
|
|
// Runtime::Create acquired the mutator_lock_ that is normally given away when we
|
// Runtime::Start, give it away now so that we don't starve GC.
|
self->TransitionFromRunnableToSuspended(kNative);
|
|
WatchDog::SetRuntime(runtime_.get());
|
|
return true;
|
}
|
|
// Let the ImageWriter write the image files. If we do not compile PIC, also fix up the oat files.
|
bool CreateImageFile()
|
REQUIRES(!Locks::mutator_lock_) {
|
CHECK(image_writer_ != nullptr);
|
if (!IsBootImage()) {
|
CHECK(image_filenames_.empty());
|
image_filenames_.push_back(app_image_file_name_);
|
}
|
if (!image_writer_->Write(app_image_fd_,
|
image_filenames_,
|
oat_filenames_)) {
|
LOG(ERROR) << "Failure during image file creation";
|
return false;
|
}
|
|
// We need the OatDataBegin entries.
|
dchecked_vector<uintptr_t> oat_data_begins;
|
for (size_t i = 0, size = oat_filenames_.size(); i != size; ++i) {
|
oat_data_begins.push_back(image_writer_->GetOatDataBegin(i));
|
}
|
// Destroy ImageWriter.
|
image_writer_.reset();
|
|
return true;
|
}
|
|
// Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;)
|
static std::unique_ptr<HashSet<std::string>> ReadImageClassesFromFile(
|
const char* image_classes_filename) {
|
std::function<std::string(const char*)> process = DotToDescriptor;
|
return ReadCommentedInputFromFile<HashSet<std::string>>(image_classes_filename, &process);
|
}
|
|
// Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;)
|
static std::unique_ptr<HashSet<std::string>> ReadImageClassesFromZip(
|
const char* zip_filename,
|
const char* image_classes_filename,
|
std::string* error_msg) {
|
std::function<std::string(const char*)> process = DotToDescriptor;
|
return ReadCommentedInputFromZip<HashSet<std::string>>(zip_filename,
|
image_classes_filename,
|
&process,
|
error_msg);
|
}
|
|
// Read lines from the given file, dropping comments and empty lines. Post-process each line with
|
// the given function.
|
template <typename T>
|
static std::unique_ptr<T> ReadCommentedInputFromFile(
|
const char* input_filename, std::function<std::string(const char*)>* process) {
|
std::unique_ptr<std::ifstream> input_file(new std::ifstream(input_filename, std::ifstream::in));
|
if (input_file.get() == nullptr) {
|
LOG(ERROR) << "Failed to open input file " << input_filename;
|
return nullptr;
|
}
|
std::unique_ptr<T> result = ReadCommentedInputStream<T>(*input_file, process);
|
input_file->close();
|
return result;
|
}
|
|
// Read lines from the given file from the given zip file, dropping comments and empty lines.
|
// Post-process each line with the given function.
|
template <typename T>
|
static std::unique_ptr<T> ReadCommentedInputFromZip(
|
const char* zip_filename,
|
const char* input_filename,
|
std::function<std::string(const char*)>* process,
|
std::string* error_msg) {
|
std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg));
|
if (zip_archive.get() == nullptr) {
|
return nullptr;
|
}
|
std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(input_filename, error_msg));
|
if (zip_entry.get() == nullptr) {
|
*error_msg = StringPrintf("Failed to find '%s' within '%s': %s", input_filename,
|
zip_filename, error_msg->c_str());
|
return nullptr;
|
}
|
MemMap input_file = zip_entry->ExtractToMemMap(zip_filename, input_filename, error_msg);
|
if (!input_file.IsValid()) {
|
*error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", input_filename,
|
zip_filename, error_msg->c_str());
|
return nullptr;
|
}
|
const std::string input_string(reinterpret_cast<char*>(input_file.Begin()), input_file.Size());
|
std::istringstream input_stream(input_string);
|
return ReadCommentedInputStream<T>(input_stream, process);
|
}
|
|
// Read lines from the given stream, dropping comments and empty lines. Post-process each line
|
// with the given function.
|
template <typename T>
|
static std::unique_ptr<T> ReadCommentedInputStream(
|
std::istream& in_stream,
|
std::function<std::string(const char*)>* process) {
|
std::unique_ptr<T> output(new T());
|
while (in_stream.good()) {
|
std::string dot;
|
std::getline(in_stream, dot);
|
if (android::base::StartsWith(dot, "#") || dot.empty()) {
|
continue;
|
}
|
if (process != nullptr) {
|
std::string descriptor((*process)(dot.c_str()));
|
output->insert(output->end(), descriptor);
|
} else {
|
output->insert(output->end(), dot);
|
}
|
}
|
return output;
|
}
|
|
void LogCompletionTime() {
|
// Note: when creation of a runtime fails, e.g., when trying to compile an app but when there
|
// is no image, there won't be a Runtime::Current().
|
// Note: driver creation can fail when loading an invalid dex file.
|
LOG(INFO) << "dex2oat took "
|
<< PrettyDuration(NanoTime() - start_ns_)
|
<< " (" << PrettyDuration(ProcessCpuNanoTime() - start_cputime_ns_) << " cpu)"
|
<< " (threads: " << thread_count_ << ") "
|
<< ((Runtime::Current() != nullptr && driver_ != nullptr) ?
|
driver_->GetMemoryUsageString(kIsDebugBuild || VLOG_IS_ON(compiler)) :
|
"");
|
}
|
|
std::string StripIsaFrom(const char* image_filename, InstructionSet isa) {
|
std::string res(image_filename);
|
size_t last_slash = res.rfind('/');
|
if (last_slash == std::string::npos || last_slash == 0) {
|
return res;
|
}
|
size_t penultimate_slash = res.rfind('/', last_slash - 1);
|
if (penultimate_slash == std::string::npos) {
|
return res;
|
}
|
// Check that the string in-between is the expected one.
|
if (res.substr(penultimate_slash + 1, last_slash - penultimate_slash - 1) !=
|
GetInstructionSetString(isa)) {
|
LOG(WARNING) << "Unexpected string when trying to strip isa: " << res;
|
return res;
|
}
|
return res.substr(0, penultimate_slash) + res.substr(last_slash);
|
}
|
|
std::unique_ptr<CompilerOptions> compiler_options_;
|
Compiler::Kind compiler_kind_;
|
|
std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_;
|
|
std::unique_ptr<VerificationResults> verification_results_;
|
|
std::unique_ptr<QuickCompilerCallbacks> callbacks_;
|
|
std::unique_ptr<Runtime> runtime_;
|
|
// The spec describing how the class loader should be setup for compilation.
|
std::unique_ptr<ClassLoaderContext> class_loader_context_;
|
|
// Optional list of file descriptors corresponding to dex file locations in
|
// flattened `class_loader_context_`.
|
std::vector<int> class_loader_context_fds_;
|
|
// The class loader context stored in the oat file. May be equal to class_loader_context_.
|
std::unique_ptr<ClassLoaderContext> stored_class_loader_context_;
|
|
size_t thread_count_;
|
uint64_t start_ns_;
|
uint64_t start_cputime_ns_;
|
std::unique_ptr<WatchDog> watchdog_;
|
std::vector<std::unique_ptr<File>> oat_files_;
|
std::vector<std::unique_ptr<File>> vdex_files_;
|
std::string oat_location_;
|
std::vector<std::string> oat_filenames_;
|
std::vector<std::string> oat_unstripped_;
|
bool strip_;
|
int oat_fd_;
|
int input_vdex_fd_;
|
int output_vdex_fd_;
|
std::string input_vdex_;
|
std::string output_vdex_;
|
std::unique_ptr<VdexFile> input_vdex_file_;
|
int dm_fd_;
|
std::string dm_file_location_;
|
std::unique_ptr<ZipArchive> dm_file_;
|
std::vector<std::string> dex_filenames_;
|
std::vector<std::string> dex_locations_;
|
int zip_fd_;
|
std::string zip_location_;
|
std::string boot_image_filename_;
|
std::vector<const char*> runtime_args_;
|
std::vector<std::string> image_filenames_;
|
uintptr_t image_base_;
|
const char* image_classes_zip_filename_;
|
const char* image_classes_filename_;
|
ImageHeader::StorageMode image_storage_mode_;
|
const char* passes_to_run_filename_;
|
const char* dirty_image_objects_filename_;
|
std::unique_ptr<HashSet<std::string>> dirty_image_objects_;
|
std::unique_ptr<std::vector<std::string>> passes_to_run_;
|
bool is_host_;
|
std::string android_root_;
|
std::string no_inline_from_string_;
|
CompactDexLevel compact_dex_level_ = kDefaultCompactDexLevel;
|
|
std::vector<std::unique_ptr<linker::ElfWriter>> elf_writers_;
|
std::vector<std::unique_ptr<linker::OatWriter>> oat_writers_;
|
std::vector<OutputStream*> rodata_;
|
std::vector<std::unique_ptr<OutputStream>> vdex_out_;
|
std::unique_ptr<linker::ImageWriter> image_writer_;
|
std::unique_ptr<CompilerDriver> driver_;
|
|
std::vector<MemMap> opened_dex_files_maps_;
|
std::vector<std::unique_ptr<const DexFile>> opened_dex_files_;
|
|
bool avoid_storing_invocation_;
|
android::base::unique_fd invocation_file_;
|
std::string swap_file_name_;
|
int swap_fd_;
|
size_t min_dex_files_for_swap_ = kDefaultMinDexFilesForSwap;
|
size_t min_dex_file_cumulative_size_for_swap_ = kDefaultMinDexFileCumulativeSizeForSwap;
|
size_t very_large_threshold_ = std::numeric_limits<size_t>::max();
|
std::string app_image_file_name_;
|
int app_image_fd_;
|
std::string profile_file_;
|
int profile_file_fd_;
|
std::unique_ptr<ProfileCompilationInfo> profile_compilation_info_;
|
TimingLogger* timings_;
|
std::vector<std::vector<const DexFile*>> dex_files_per_oat_file_;
|
std::unordered_map<const DexFile*, size_t> dex_file_oat_index_map_;
|
|
// Backing storage.
|
std::forward_list<std::string> char_backing_storage_;
|
|
// See CompilerOptions.force_determinism_.
|
bool force_determinism_;
|
|
// Directory of relative classpaths.
|
std::string classpath_dir_;
|
|
// Whether the given input vdex is also the output.
|
bool update_input_vdex_ = false;
|
|
// By default, copy the dex to the vdex file only if dex files are
|
// compressed in APK.
|
linker::CopyOption copy_dex_files_ = linker::CopyOption::kOnlyIfCompressed;
|
|
// The reason for invoking the compiler.
|
std::string compilation_reason_;
|
|
DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat);
|
};
|
|
static void b13564922() {
|
#if defined(__linux__) && defined(__arm__)
|
int major, minor;
|
struct utsname uts;
|
if (uname(&uts) != -1 &&
|
sscanf(uts.release, "%d.%d", &major, &minor) == 2 &&
|
((major < 3) || ((major == 3) && (minor < 4)))) {
|
// Kernels before 3.4 don't handle the ASLR well and we can run out of address
|
// space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization.
|
int old_personality = personality(0xffffffff);
|
if ((old_personality & ADDR_NO_RANDOMIZE) == 0) {
|
int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE);
|
if (new_personality == -1) {
|
LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed.";
|
}
|
}
|
}
|
#endif
|
}
|
|
class ScopedGlobalRef {
|
public:
|
explicit ScopedGlobalRef(jobject obj) : obj_(obj) {}
|
~ScopedGlobalRef() {
|
if (obj_ != nullptr) {
|
ScopedObjectAccess soa(Thread::Current());
|
soa.Env()->GetVm()->DeleteGlobalRef(soa.Self(), obj_);
|
}
|
}
|
|
private:
|
jobject obj_;
|
};
|
|
static dex2oat::ReturnCode CompileImage(Dex2Oat& dex2oat) {
|
dex2oat.LoadClassProfileDescriptors();
|
jobject class_loader = dex2oat.Compile();
|
// Keep the class loader that was used for compilation live for the rest of the compilation
|
// process.
|
ScopedGlobalRef global_ref(class_loader);
|
|
if (!dex2oat.WriteOutputFiles(class_loader)) {
|
dex2oat.EraseOutputFiles();
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// Flush boot.oat. Keep it open as we might still modify it later (strip it).
|
if (!dex2oat.FlushOutputFiles()) {
|
dex2oat.EraseOutputFiles();
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// Creates the boot.art and patches the oat files.
|
if (!dex2oat.HandleImage()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// When given --host, finish early without stripping.
|
if (dex2oat.IsHost()) {
|
if (!dex2oat.FlushCloseOutputFiles()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
dex2oat.DumpTiming();
|
return dex2oat::ReturnCode::kNoFailure;
|
}
|
|
// Copy stripped to unstripped location, if necessary.
|
if (!dex2oat.CopyOatFilesToSymbolsDirectoryAndStrip()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// FlushClose again, as stripping might have re-opened the oat files.
|
if (!dex2oat.FlushCloseOutputFiles()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
dex2oat.DumpTiming();
|
return dex2oat::ReturnCode::kNoFailure;
|
}
|
|
static dex2oat::ReturnCode CompileApp(Dex2Oat& dex2oat) {
|
jobject class_loader = dex2oat.Compile();
|
// Keep the class loader that was used for compilation live for the rest of the compilation
|
// process.
|
ScopedGlobalRef global_ref(class_loader);
|
|
if (!dex2oat.WriteOutputFiles(class_loader)) {
|
dex2oat.EraseOutputFiles();
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// Do not close the oat files here. We might have gotten the output file by file descriptor,
|
// which we would lose.
|
|
// When given --host, finish early without stripping.
|
if (dex2oat.IsHost()) {
|
if (!dex2oat.FlushCloseOutputFiles()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
dex2oat.DumpTiming();
|
return dex2oat::ReturnCode::kNoFailure;
|
}
|
|
// Copy stripped to unstripped location, if necessary. This will implicitly flush & close the
|
// stripped versions. If this is given, we expect to be able to open writable files by name.
|
if (!dex2oat.CopyOatFilesToSymbolsDirectoryAndStrip()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// Flush and close the files.
|
if (!dex2oat.FlushCloseOutputFiles()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
dex2oat.DumpTiming();
|
return dex2oat::ReturnCode::kNoFailure;
|
}
|
|
static dex2oat::ReturnCode Dex2oat(int argc, char** argv) {
|
b13564922();
|
|
TimingLogger timings("compiler", false, false);
|
|
// Allocate `dex2oat` on the heap instead of on the stack, as Clang
|
// might produce a stack frame too large for this function or for
|
// functions inlining it (such as main), that would not fit the
|
// requirements of the `-Wframe-larger-than` option.
|
std::unique_ptr<Dex2Oat> dex2oat = std::make_unique<Dex2Oat>(&timings);
|
|
// Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError.
|
dex2oat->ParseArgs(argc, argv);
|
|
// If needed, process profile information for profile guided compilation.
|
// This operation involves I/O.
|
if (dex2oat->UseProfile()) {
|
if (!dex2oat->LoadProfile()) {
|
LOG(ERROR) << "Failed to process profile file";
|
return dex2oat::ReturnCode::kOther;
|
}
|
}
|
|
art::MemMap::Init(); // For ZipEntry::ExtractToMemMap, and vdex.
|
|
// Check early that the result of compilation can be written
|
if (!dex2oat->OpenFile()) {
|
return dex2oat::ReturnCode::kOther;
|
}
|
|
// Print the complete line when any of the following is true:
|
// 1) Debug build
|
// 2) Compiling an image
|
// 3) Compiling with --host
|
// 4) Compiling on the host (not a target build)
|
// Otherwise, print a stripped command line.
|
if (kIsDebugBuild || dex2oat->IsBootImage() || dex2oat->IsHost() || !kIsTargetBuild) {
|
LOG(INFO) << CommandLine();
|
} else {
|
LOG(INFO) << StrippedCommandLine();
|
}
|
|
dex2oat::ReturnCode setup_code = dex2oat->Setup();
|
if (setup_code != dex2oat::ReturnCode::kNoFailure) {
|
dex2oat->EraseOutputFiles();
|
return setup_code;
|
}
|
|
// TODO: Due to the cyclic dependencies, profile loading and verifying are
|
// being done separately. Refactor and place the two next to each other.
|
// If verification fails, we don't abort the compilation and instead log an
|
// error.
|
// TODO(b/62602192, b/65260586): We should consider aborting compilation when
|
// the profile verification fails.
|
// Note: If dex2oat fails, installd will remove the oat files causing the app
|
// to fallback to apk with possible in-memory extraction. We want to avoid
|
// that, and thus we're lenient towards profile corruptions.
|
if (dex2oat->UseProfile()) {
|
dex2oat->VerifyProfileData();
|
}
|
|
// Helps debugging on device. Can be used to determine which dalvikvm instance invoked a dex2oat
|
// instance. Used by tools/bisection_search/bisection_search.py.
|
VLOG(compiler) << "Running dex2oat (parent PID = " << getppid() << ")";
|
|
dex2oat::ReturnCode result;
|
if (dex2oat->IsImage()) {
|
result = CompileImage(*dex2oat);
|
} else {
|
result = CompileApp(*dex2oat);
|
}
|
|
return result;
|
}
|
} // namespace art
|
|
int main(int argc, char** argv) {
|
int result = static_cast<int>(art::Dex2oat(argc, argv));
|
// Everything was done, do an explicit exit here to avoid running Runtime destructors that take
|
// time (bug 10645725) unless we're a debug or instrumented build or running on a memory tool.
|
// Note: The Dex2Oat class should not destruct the runtime in this case.
|
if (!art::kIsDebugBuild && !art::kIsPGOInstrumentation && !art::kRunningOnMemoryTool) {
|
_exit(result);
|
}
|
return result;
|
}
|
