/*
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* Copyright (C) 2016 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 "art_method-inl.h"
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#include "jit/jit.h"
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#include "jit/jit_code_cache.h"
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#include "jit/profiling_info.h"
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#include "nativehelper/ScopedUtfChars.h"
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#include "oat_quick_method_header.h"
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#include "scoped_thread_state_change-inl.h"
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#include "stack.h"
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#include "stack_map.h"
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#include "thread-current-inl.h"
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namespace art {
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namespace {
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template <typename Handler>
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void ProcessMethodWithName(JNIEnv* env, jstring method_name, const Handler& handler) {
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ScopedUtfChars chars(env, method_name);
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CHECK(chars.c_str() != nullptr);
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ScopedObjectAccess soa(Thread::Current());
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StackVisitor::WalkStack(
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[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
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std::string m_name(stack_visitor->GetMethod()->GetName());
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if (m_name.compare(chars.c_str()) == 0) {
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handler(stack_visitor);
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return false;
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}
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return true;
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},
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soa.Self(),
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/* context= */ nullptr,
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art::StackVisitor::StackWalkKind::kIncludeInlinedFrames);
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}
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} // namespace
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_isInOsrCode(JNIEnv* env,
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jclass,
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jstring method_name) {
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jit::Jit* jit = Runtime::Current()->GetJit();
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if (jit == nullptr) {
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// Just return true for non-jit configurations to stop the infinite loop.
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return JNI_TRUE;
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}
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bool in_osr_code = false;
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ProcessMethodWithName(
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env,
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method_name,
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[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
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ArtMethod* m = stack_visitor->GetMethod();
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const OatQuickMethodHeader* header =
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Runtime::Current()->GetJit()->GetCodeCache()->LookupOsrMethodHeader(m);
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if (header != nullptr && header == stack_visitor->GetCurrentOatQuickMethodHeader()) {
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in_osr_code = true;
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}
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});
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return in_osr_code;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_isInInterpreter(JNIEnv* env,
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jclass,
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jstring method_name) {
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if (!Runtime::Current()->UseJitCompilation()) {
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// The return value is irrelevant if we're not using JIT.
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return false;
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}
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bool in_interpreter = false;
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ProcessMethodWithName(
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env,
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method_name,
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[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
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ArtMethod* m = stack_visitor->GetMethod();
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const OatQuickMethodHeader* header =
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Runtime::Current()->GetJit()->GetCodeCache()->LookupOsrMethodHeader(m);
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if ((header == nullptr || header != stack_visitor->GetCurrentOatQuickMethodHeader()) &&
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stack_visitor->IsShadowFrame()) {
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in_interpreter = true;
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}
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});
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return in_interpreter;
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_ensureHasProfilingInfo(JNIEnv* env,
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jclass,
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jstring method_name) {
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if (!Runtime::Current()->UseJitCompilation()) {
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return;
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}
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ProcessMethodWithName(
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env,
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method_name,
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[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
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ArtMethod* m = stack_visitor->GetMethod();
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ProfilingInfo::Create(Thread::Current(), m, /* retry_allocation */ true);
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});
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_ensureHasOsrCode(JNIEnv* env,
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jclass,
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jstring method_name) {
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if (!Runtime::Current()->UseJitCompilation()) {
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return;
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}
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ProcessMethodWithName(
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env,
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method_name,
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[&](const art::StackVisitor* stack_visitor) REQUIRES_SHARED(Locks::mutator_lock_) {
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ArtMethod* m = stack_visitor->GetMethod();
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jit::Jit* jit = Runtime::Current()->GetJit();
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while (jit->GetCodeCache()->LookupOsrMethodHeader(m) == nullptr) {
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// Sleep to yield to the compiler thread.
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usleep(1000);
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// Will either ensure it's compiled or do the compilation itself.
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jit->CompileMethod(m, Thread::Current(), /*baseline=*/ false, /*osr=*/ true);
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}
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});
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}
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} // namespace art
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