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RocksDB for Erlang
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deps/snappy/third_party/benchmark/src/thread_manager.h
#ifndef BENCHMARK_THREAD_MANAGER_H
#define BENCHMARK_THREAD_MANAGER_H
#include <atomic>
#include "benchmark/benchmark.h"
#include "mutex.h"
namespace benchmark {
namespace internal {
class ThreadManager {
public:
explicit ThreadManager(int num_threads)
: alive_threads_(num_threads), start_stop_barrier_(num_threads) {}
Mutex& GetBenchmarkMutex() const RETURN_CAPABILITY(benchmark_mutex_) {
return benchmark_mutex_;
}
bool StartStopBarrier() EXCLUDES(end_cond_mutex_) {
return start_stop_barrier_.wait();
}
void NotifyThreadComplete() EXCLUDES(end_cond_mutex_) {
start_stop_barrier_.removeThread();
if (--alive_threads_ == 0) {
MutexLock lock(end_cond_mutex_);
end_condition_.notify_all();
}
}
void WaitForAllThreads() EXCLUDES(end_cond_mutex_) {
MutexLock lock(end_cond_mutex_);
end_condition_.wait(lock.native_handle(),
[this]() { return alive_threads_ == 0; });
}
struct Result {
IterationCount iterations = 0;
double real_time_used = 0;
double cpu_time_used = 0;
double manual_time_used = 0;
int64_t complexity_n = 0;
std::string report_label_;
std::string skip_message_;
internal::Skipped skipped_ = internal::NotSkipped;
UserCounters counters;
};
GUARDED_BY(GetBenchmarkMutex()) Result results;
private:
mutable Mutex benchmark_mutex_;
std::atomic<int> alive_threads_;
Barrier start_stop_barrier_;
Mutex end_cond_mutex_;
Condition end_condition_;
};
} // namespace internal
} // namespace benchmark
#endif // BENCHMARK_THREAD_MANAGER_H