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/*
* Copyright (C) 2015 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.
*/
#include "profile_assistant.h"
namespace art {
// Minimum number of new methods that profiles must contain to enable recompilation.
static constexpr const uint32_t kMinNewMethodsForCompilation = 10;
bool ProfileAssistant::ProcessProfiles(
const std::vector<std::string>& profile_files,
const std::vector<std::string>& reference_profile_files,
/*out*/ ProfileCompilationInfo** profile_compilation_info) {
DCHECK(!profile_files.empty());
DCHECK(reference_profile_files.empty() ||
(profile_files.size() == reference_profile_files.size()));
std::vector<ProfileCompilationInfo> new_info(profile_files.size());
bool should_compile = false;
// Read the main profile files.
for (size_t i = 0; i < profile_files.size(); i++) {
if (!new_info[i].Load(profile_files[i])) {
LOG(WARNING) << "Could not load profile file: " << profile_files[i];
return false;
}
// Do we have enough new profiled methods that will make the compilation worthwhile?
should_compile |= (new_info[i].GetNumberOfMethods() > kMinNewMethodsForCompilation);
}
if (!should_compile) {
*profile_compilation_info = nullptr;
return true;
}
std::unique_ptr<ProfileCompilationInfo> result(new ProfileCompilationInfo());
for (size_t i = 0; i < new_info.size(); i++) {
// Merge all data into a single object.
result->Load(new_info[i]);
// If we have any reference profile information merge their information with
// the current profiles and save them back to disk.
if (!reference_profile_files.empty()) {
if (!new_info[i].Load(reference_profile_files[i])) {
LOG(WARNING) << "Could not load reference profile file: " << reference_profile_files[i];
return false;
}
if (!new_info[i].Save(reference_profile_files[i])) {
LOG(WARNING) << "Could not save reference profile file: " << reference_profile_files[i];
return false;
}
}
}
*profile_compilation_info = result.release();
return true;
}
} // namespace art
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