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timer: support for walltime

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* spot/misc/timer.hh: here.
This commit is contained in:
Etienne Renault 2016-05-04 10:56:21 +02:00
parent 765bb8a7c4
commit 9a9a237272
1 changed files with 18 additions and 1 deletions
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19
spot/misc/timer.hh
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@ -33,7 +33,7 @@
# include <sys/times.h> # include <sys/times.h>
#endif #endif
#include <ctime> #include <ctime>
#include <chrono>
namespace spot namespace spot
{ {
@ -96,6 +96,7 @@ namespace spot
{ {
SPOT_ASSERT(!running); SPOT_ASSERT(!running);
running = true; running = true;
wall_start_ = std::chrono::high_resolution_clock::now();
#ifdef SPOT_HAVE_TIMES #ifdef SPOT_HAVE_TIMES
struct tms tmp; struct tms tmp;
times(&tmp); times(&tmp);
@ -112,6 +113,9 @@ namespace spot
void void
stop() stop()
{ {
auto end = std::chrono::high_resolution_clock::now();
wall_cumul_ = std::chrono::duration_cast
<std::chrono::milliseconds>(end - wall_start_).count();
#ifdef SPOT_HAVE_TIMES #ifdef SPOT_HAVE_TIMES
struct tms tmp; struct tms tmp;
times(&tmp); times(&tmp);
@ -194,10 +198,23 @@ namespace spot
return running; return running;
} }
/// \brief Return cumulative wall time
///
/// When using multithreading the cpu time is not
/// relevant and we have to deal with wall time to have an
/// effective timer
std::chrono::milliseconds::rep
walltime() const
{
return wall_cumul_;
}
protected: protected:
time_info start_; time_info start_;
time_info total_; time_info total_;
bool running; bool running;
std::chrono::high_resolution_clock::time_point wall_start_;
std::chrono::milliseconds::rep wall_cumul_;
}; };
// This function declared here must be implemented in each file // This function declared here must be implemented in each file