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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_PROFMAN_PROFILE_ASSISTANT_H_
#define ART_PROFMAN_PROFILE_ASSISTANT_H_
#include <string>
#include <vector>
#include "base/scoped_flock.h"
#include "profile/profile_compilation_info.h"
#include "profman/profman_result.h"
namespace art {
class ProfileAssistant {
public:
class Options {
public:
static constexpr bool kForceMergeDefault = false;
static constexpr bool kBootImageMergeDefault = false;
static constexpr uint32_t kMinNewMethodsPercentChangeForCompilation = 2;
static constexpr uint32_t kMinNewClassesPercentChangeForCompilation = 2;
Options()
: force_merge_(kForceMergeDefault),
force_merge_and_analyze_(kForceMergeDefault),
boot_image_merge_(kBootImageMergeDefault),
min_new_methods_percent_change_for_compilation_(
kMinNewMethodsPercentChangeForCompilation),
min_new_classes_percent_change_for_compilation_(
kMinNewClassesPercentChangeForCompilation) {
}
// Only for S and T uses. U+ should use `IsForceMergeAndAnalyze`.
bool IsForceMerge() const { return force_merge_; }
bool IsForceMergeAndAnalyze() const { return force_merge_and_analyze_; }
bool IsBootImageMerge() const { return boot_image_merge_; }
uint32_t GetMinNewMethodsPercentChangeForCompilation() const {
return min_new_methods_percent_change_for_compilation_;
}
uint32_t GetMinNewClassesPercentChangeForCompilation() const {
return min_new_classes_percent_change_for_compilation_;
}
void SetForceMerge(bool value) { force_merge_ = value; }
void SetForceMergeAndAnalyze(bool value) { force_merge_and_analyze_ = value; }
void SetBootImageMerge(bool value) { boot_image_merge_ = value; }
void SetMinNewMethodsPercentChangeForCompilation(uint32_t value) {
min_new_methods_percent_change_for_compilation_ = value;
}
void SetMinNewClassesPercentChangeForCompilation(uint32_t value) {
min_new_classes_percent_change_for_compilation_ = value;
}
private:
// If true, performs a forced merge, without analyzing if there is a significant difference
// between before and after the merge.
// See ProfileAssistant#ProcessProfile.
// Only for S and T uses. U+ should use `force_merge_and_analyze_`.
bool force_merge_;
// If true, performs a forced merge and analyzes if there is any difference between before and
// after the merge.
// See ProfileAssistant#ProcessProfile.
bool force_merge_and_analyze_;
// Signals that the merge is for boot image profiles. It will ignore differences
// in profile versions (instead of aborting).
bool boot_image_merge_;
uint32_t min_new_methods_percent_change_for_compilation_;
uint32_t min_new_classes_percent_change_for_compilation_;
};
// Process the profile information present in the given files. Returns one of
// ProcessingResult values depending on profile information and whether or not
// the analysis ended up successfully (i.e. no errors during reading,
// merging or writing of profile files).
//
// When the returned value is kCompile there is a significant difference
// between profile_files and reference_profile_files. In this case
// reference_profile will be updated with the profiling info obtain after
// merging all profiles.
//
// When the returned value is kSkipCompilationSmallDelta, the difference between
// the merge of the current profiles and the reference one is insignificant. In
// this case no file will be updated. A variation of this code is
// kSkipCompilationEmptyProfiles which indicates that all the profiles are empty.
// This allow the caller to make fine grain decisions on the compilation strategy.
static ProfmanResult::ProcessingResult ProcessProfiles(
const std::vector<std::string>& profile_files,
const std::string& reference_profile_file,
const ProfileCompilationInfo::ProfileLoadFilterFn& filter_fn
= ProfileCompilationInfo::ProfileFilterFnAcceptAll,
const Options& options = Options());
static ProfmanResult::ProcessingResult ProcessProfiles(
const std::vector<int>& profile_files_fd_,
int reference_profile_file_fd,
const ProfileCompilationInfo::ProfileLoadFilterFn& filter_fn
= ProfileCompilationInfo::ProfileFilterFnAcceptAll,
const Options& options = Options());
private:
static ProfmanResult::ProcessingResult ProcessProfilesInternal(
const std::vector<ScopedFlock>& profile_files,
const ScopedFlock& reference_profile_file,
const ProfileCompilationInfo::ProfileLoadFilterFn& filter_fn,
const Options& options);
DISALLOW_COPY_AND_ASSIGN(ProfileAssistant);
};
} // namespace art
#endif // ART_PROFMAN_PROFILE_ASSISTANT_H_
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