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Fix time measurement issud

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This commit is contained in:
Shawn Chain 2018-07-04 17:54:38 +08:00
parent ae532156c5
commit 657ef07b56
2 changed files with 7 additions and 12 deletions
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17
StopWatch.cpp
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@ -64,21 +64,16 @@ CStopWatch::~CStopWatch()
unsigned long CStopWatch::start()
{
::gettimeofday(&m_start, NULL);
return m_start.tv_usec;
::clock_gettime(CLOCK_MONOTONIC, &m_start);
return m_start.tv_sec;
}
unsigned int CStopWatch::elapsed()
{
struct timeval now;
::gettimeofday(&now, NULL);
unsigned int elapsed = (now.tv_sec - m_start.tv_sec) * 1000U;
elapsed += now.tv_usec / 1000U;
elapsed -= m_start.tv_usec / 1000U;
return elapsed;
struct timespec now;
::clock_gettime(CLOCK_MONOTONIC, &now);
int offset = ((now.tv_sec - m_start.tv_sec) * 1000000000UL + now.tv_nsec - m_start.tv_nsec ) / 1000000UL;
return (unsigned int)offset;
}
#endif