/*
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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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#ifndef ART_RUNTIME_COMPILER_FILTER_H_
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#define ART_RUNTIME_COMPILER_FILTER_H_
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#include <iosfwd>
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#include <string>
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#include <vector>
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#include "base/macros.h"
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namespace art {
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class CompilerFilter final {
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public:
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// Note: Order here matters. Later filter choices are considered "as good
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// as" earlier filter choices.
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enum Filter {
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kAssumeVerified, // Skip verification but mark all classes as verified anyway.
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kExtract, // Delay verication to runtime, do not compile anything.
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kVerify, // Only verify classes.
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kQuicken, // Verify, quicken, and compile JNI stubs.
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kSpaceProfile, // Maximize space savings based on profile.
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kSpace, // Maximize space savings.
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kSpeedProfile, // Maximize runtime performance based on profile.
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kSpeed, // Maximize runtime performance.
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kEverythingProfile, // Compile everything capable of being compiled based on profile.
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kEverything, // Compile everything capable of being compiled.
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};
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static const Filter kDefaultCompilerFilter = kSpeed;
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// Returns true if an oat file with this compiler filter contains
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// compiled executable code for bytecode.
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static bool IsAotCompilationEnabled(Filter filter);
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// Returns true if an oat file with this compiler filter contains
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// compiled executable code for bytecode, JNI methods, or quickened dex
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// bytecode.
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static bool IsAnyCompilationEnabled(Filter filter);
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// Returns true if an oat file with this compiler filter contains
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// compiled executable code for JNI methods.
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static bool IsJniCompilationEnabled(Filter filter);
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// Returns true if an oat file with this compiler filter contains
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// quickened dex bytecode.
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static bool IsQuickeningCompilationEnabled(Filter filter);
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// Returns true if this compiler filter requires running verification.
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static bool IsVerificationEnabled(Filter filter);
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// Returns true if an oat file with this compiler filter depends on the
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// boot image checksum.
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static bool DependsOnImageChecksum(Filter filter);
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// Returns true if an oat file with this compiler filter depends on a
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// profile.
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static bool DependsOnProfile(Filter filter);
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// Returns a non-profile-guided version of the given filter.
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static Filter GetNonProfileDependentFilterFrom(Filter filter);
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// Returns a filter suitable for safe mode.
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static Filter GetSafeModeFilterFrom(Filter filter);
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// Returns true if the 'current' compiler filter is considered at least as
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// good as the 'target' compilation type.
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// For example: kSpeed is as good as kInterpretOnly, but kInterpretOnly is
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// not as good as kSpeed.
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static bool IsAsGoodAs(Filter current, Filter target);
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// Returns true if 'current' compiler filter is better than 'target' compiler
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// filter. Compared to IsAsGoodAs, this returns false if the compiler filters are
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// equal.
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static bool IsBetter(Filter current, Filter target);
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// Return the flag name of the given filter.
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// For example: given kVerifyAtRuntime, returns "verify-at-runtime".
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// The name returned corresponds to the name accepted by
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// ParseCompilerFilter.
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static std::string NameOfFilter(Filter filter);
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// Parse the compiler filter from the given name.
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// Returns true and sets filter to the parsed value if name refers to a
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// valid filter. Returns false if no filter matches that name.
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// 'filter' must be non-null.
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static bool ParseCompilerFilter(const char* name, /*out*/Filter* filter);
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private:
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DISALLOW_COPY_AND_ASSIGN(CompilerFilter);
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};
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std::ostream& operator<<(std::ostream& os, const CompilerFilter::Filter& rhs);
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} // namespace art
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#endif // ART_RUNTIME_COMPILER_FILTER_H_
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