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Add global timer utils

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Global timers can be used to accumulate timings of the same context
in a thread-safe way.
This commit is contained in:
Patrick Niklaus 2014-08-22 00:50:48 +02:00
parent 4d27b75897
commit 651c07c724
1 changed files with 42 additions and 2 deletions
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44
Util/TimingUtil.h
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@ -29,11 +29,51 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define TIMINGUTIL_H
#include <chrono>
#include <atomic>
#include <mutex>
#include <unordered_map>
struct GlobalTimer
{
GlobalTimer() : time(0) {}
std::atomic<long unsigned> time;
};
class GlobalTimerFactory
{
public:
static GlobalTimerFactory& get()
{
static GlobalTimerFactory instance;
return instance;
}
GlobalTimer& getGlobalTimer(const std::string& name)
{
std::lock_guard<std::mutex> lock(map_mutex);
return timer_map[name];
}
private:
std::mutex map_mutex;
std::unordered_map<std::string, GlobalTimer> timer_map;
};
#define GLOBAL_TIMER_AQUIRE(_X) auto& _X##_global_timer = GlobalTimerFactory::get().getGlobalTimer(#_X)
#define GLOBAL_TIMER_RESET(_X) _X##_global_timer.time = 0
#define GLOBAL_TIMER_START(_X) TIMER_START(_X)
#define GLOBAL_TIMER_STOP(_X) TIMER_STOP(_X); _X##_global_timer.time += TIMER_NSEC(_X)
#define GLOBAL_TIMER_NSEC(_X) static_cast<double>(_X##_global_timer.time)
#define GLOBAL_TIMER_USEC(_X) (_X##_global_timer.time / 1000.0)
#define GLOBAL_TIMER_MSEC(_X) (_X##_global_timer.time / 1000.0 / 1000.0)
#define GLOBAL_TIMER_SEC(_X) (_X##_global_timer.time / 1000.0 / 1000.0 / 1000.0)
#define TIMER_START(_X) auto _X##_start = std::chrono::steady_clock::now(), _X##_stop = _X##_start
#define TIMER_STOP(_X) _X##_stop = std::chrono::steady_clock::now()
#define TIMER_MSEC(_X) std::chrono::duration_cast<std::chrono::milliseconds>(_X##_stop - _X##_start).count()
#define TIMER_SEC(_X) (0.001*std::chrono::duration_cast<std::chrono::milliseconds>(_X##_stop - _X##_start).count())
#define TIMER_NSEC(_X) std::chrono::duration_cast<std::chrono::nanoseconds>(_X##_stop - _X##_start).count()
#define TIMER_USEC(_X) std::chrono::duration_cast<std::chrono::microseconds>(_X##_stop - _X##_start).count()
#define TIMER_MSEC(_X) (0.000001*std::chrono::duration_cast<std::chrono::nanoseconds>(_X##_stop - _X##_start).count())
#define TIMER_SEC(_X) (0.000001*std::chrono::duration_cast<std::chrono::microseconds>(_X##_stop - _X##_start).count())
#define TIMER_MIN(_X) std::chrono::duration_cast<std::chrono::minutes>(_X##_stop - _X##_start).count()
#endif // TIMINGUTIL_H