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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_LIBARTBASE_BASE_COMPILER_FILTER_H_
#define ART_LIBARTBASE_BASE_COMPILER_FILTER_H_
#include <iosfwd>
#include <string>
#include <vector>
#include "base/macros.h"
namespace art {
class CompilerFilter final {
public:
// Note: Order here matters. Later filter choices are considered "as good
// as" earlier filter choices.
// Keep supported filters in sync with `ArtShellCommand.printHelp` in
// art/libartservice/service/java/com/android/server/art/ArtShellCommand.java.
enum Filter {
kAssumeVerified, // Skip verification but mark all classes as verified anyway.
kVerify, // Only verify classes.
kSpaceProfile, // Maximize space savings based on profile.
kSpace, // Maximize space savings.
kSpeedProfile, // Maximize runtime performance based on profile.
kSpeed, // Maximize runtime performance.
kEverythingProfile, // Compile everything capable of being compiled based on profile.
kEverything, // Compile everything capable of being compiled.
};
static const Filter kDefaultCompilerFilter = kSpeed;
// Returns true if an oat file with this compiler filter contains
// compiled executable code for bytecode.
static bool IsAotCompilationEnabled(Filter filter);
// Returns true if an oat file with this compiler filter contains
// compiled executable code for bytecode, JNI methods, or quickened dex
// bytecode.
static bool IsAnyCompilationEnabled(Filter filter);
// Returns true if an oat file with this compiler filter contains
// compiled executable code for JNI methods.
static bool IsJniCompilationEnabled(Filter filter);
// Returns true if this compiler filter requires running verification.
static bool IsVerificationEnabled(Filter filter);
// Returns true if an oat file with this compiler filter depends on the
// boot image checksum.
static bool DependsOnImageChecksum(Filter filter);
// Returns true if an oat file with this compiler filter depends on a
// profile.
static bool DependsOnProfile(Filter filter);
// Returns a non-profile-guided version of the given filter.
static Filter GetNonProfileDependentFilterFrom(Filter filter);
// Returns a filter suitable for safe mode.
static Filter GetSafeModeFilterFrom(Filter filter);
// Returns true if the 'current' compiler filter is considered at least as
// good as the 'target' compilation type.
// For example: kSpeed is as good as kInterpretOnly, but kInterpretOnly is
// not as good as kSpeed.
static bool IsAsGoodAs(Filter current, Filter target);
// Returns true if 'current' compiler filter is better than 'target' compiler
// filter. Compared to IsAsGoodAs, this returns false if the compiler filters are
// equal.
static bool IsBetter(Filter current, Filter target);
// Return the flag name of the given filter.
// For example: given kVerifyAtRuntime, returns "verify-at-runtime".
// The name returned corresponds to the name accepted by
// ParseCompilerFilter.
static std::string NameOfFilter(Filter filter);
// Parse the compiler filter from the given name.
// Returns true and sets filter to the parsed value if name refers to a
// valid filter. Returns false if no filter matches that name.
// 'filter' must be non-null.
static bool ParseCompilerFilter(const char* name, /*out*/Filter* filter);
static const char* DescribeOptions();
private:
DISALLOW_COPY_AND_ASSIGN(CompilerFilter);
};
std::ostream& operator<<(std::ostream& os, const CompilerFilter::Filter& rhs);
} // namespace art
#endif // ART_LIBARTBASE_BASE_COMPILER_FILTER_H_
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