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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.
*/
#ifndef ART_RUNTIME_JIT_PROFILE_SAVER_H_
#define ART_RUNTIME_JIT_PROFILE_SAVER_H_
#include "base/mutex.h"
#include "jit_code_cache.h"
#include "offline_profiling_info.h"
#include "safe_map.h"
namespace art {
class ProfileSaver {
public:
// Starts the profile saver thread if not already started.
// If the saver is already running it adds (output_filename, code_paths) to its tracked locations.
static void Start(const std::string& output_filename,
jit::JitCodeCache* jit_code_cache,
const std::vector<std::string>& code_paths,
const std::string& foreign_dex_profile_path,
const std::string& app_data_dir)
REQUIRES(!Locks::profiler_lock_, !wait_lock_);
// Stops the profile saver thread.
// NO_THREAD_SAFETY_ANALYSIS for static function calling into member function with excludes lock.
static void Stop()
REQUIRES(!Locks::profiler_lock_, !wait_lock_)
NO_THREAD_SAFETY_ANALYSIS;
// Returns true if the profile saver is started.
static bool IsStarted() REQUIRES(!Locks::profiler_lock_);
static void NotifyDexUse(const std::string& dex_location);
private:
ProfileSaver(const std::string& output_filename,
jit::JitCodeCache* jit_code_cache,
const std::vector<std::string>& code_paths,
const std::string& foreign_dex_profile_path,
const std::string& app_data_dir);
// NO_THREAD_SAFETY_ANALYSIS for static function calling into member function with excludes lock.
static void* RunProfileSaverThread(void* arg)
REQUIRES(!Locks::profiler_lock_, !wait_lock_)
NO_THREAD_SAFETY_ANALYSIS;
// The run loop for the saver.
void Run() REQUIRES(!Locks::profiler_lock_, !wait_lock_);
// Processes the existing profiling info from the jit code cache and returns
// true if it needed to be saved to disk.
bool ProcessProfilingInfo();
// Returns true if the saver is shutting down (ProfileSaver::Stop() has been called).
bool ShuttingDown(Thread* self) REQUIRES(!Locks::profiler_lock_);
void AddTrackedLocations(const std::string& output_filename,
const std::vector<std::string>& code_paths)
REQUIRES(Locks::profiler_lock_);
static void MaybeRecordDexUseInternal(
const std::string& dex_location,
const std::set<std::string>& tracked_locations,
const std::string& foreign_dex_profile_path,
const std::string& app_data_dir);
// The only instance of the saver.
static ProfileSaver* instance_ GUARDED_BY(Locks::profiler_lock_);
// Profile saver thread.
static pthread_t profiler_pthread_ GUARDED_BY(Locks::profiler_lock_);
jit::JitCodeCache* jit_code_cache_;
SafeMap<std::string, std::set<std::string>> tracked_dex_base_locations_
GUARDED_BY(Locks::profiler_lock_);
std::string foreign_dex_profile_path_;
std::string app_data_dir_;
uint64_t code_cache_last_update_time_ns_;
bool shutting_down_ GUARDED_BY(Locks::profiler_lock_);
bool first_profile_ = true;
// Save period condition support.
Mutex wait_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
ConditionVariable period_condition_ GUARDED_BY(wait_lock_);
DISALLOW_COPY_AND_ASSIGN(ProfileSaver);
};
} // namespace art
#endif // ART_RUNTIME_JIT_PROFILE_SAVER_H_
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