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Simplify the new stopwatch code.

This commit is contained in:
Jonathan Naylor 2018-07-15 20:33:14 +01:00
parent f85c9b0790
commit 0cf59963dd
2 changed files with 40 additions and 15 deletions
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44
StopWatch.cpp
View File

@ -21,21 +21,32 @@
#if defined(_WIN32) || defined(_WIN64)
CStopWatch::CStopWatch() :
m_frequency(),
m_frequencyS(),
m_frequencyMS(),
m_start()
{
::QueryPerformanceFrequency(&m_frequency);
::QueryPerformanceFrequency(&m_frequencyS);
m_frequencyMS.QuadPart = m_frequencyS.QuadPart / 1000ULL;
}
CStopWatch::~CStopWatch()
{
}
unsigned long CStopWatch::start()
unsigned long long CStopWatch::time() const
{
LARGE_INTEGER now;
::QueryPerformanceCounter(&now);
return (unsigned long long)(now.QuadPart / m_frequencyMS.QuadPart);
}
unsigned long long CStopWatch::start()
{
::QueryPerformanceCounter(&m_start);
return (unsigned long)(m_start.QuadPart / m_frequency.QuadPart);
return (unsigned long long)(m_start.QuadPart / m_frequencyS.QuadPart);
}
unsigned int CStopWatch::elapsed()
@ -46,7 +57,7 @@ unsigned int CStopWatch::elapsed()
LARGE_INTEGER temp;
temp.QuadPart = (now.QuadPart - m_start.QuadPart) * 1000;
return (unsigned int)(temp.QuadPart / m_frequency.QuadPart);
return (unsigned int)(temp.QuadPart / m_frequencyS.QuadPart);
}
#else
@ -55,7 +66,7 @@ unsigned int CStopWatch::elapsed()
#include <ctime>
CStopWatch::CStopWatch() :
m_start()
m_startMS(0ULL)
{
}
@ -63,11 +74,22 @@ CStopWatch::~CStopWatch()
{
}
unsigned long CStopWatch::start()
unsigned long long CStopWatch::time() const
{
::clock_gettime(CLOCK_MONOTONIC, &m_start);
struct timeval now;
::gettimeofday(&now, NULL);
return m_start.tv_sec * 1000UL + m_start.tv_nsec / 1000000UL;
return now.tv_sec * 1000ULL + now.tv_usec / 1000ULL;
}
unsigned long long CStopWatch::start()
{
struct timespec now;
::clock_gettime(CLOCK_MONOTONIC, &now);
m_startMS = now.tv_sec * 1000ULL + now.tv_nsec / 1000000ULL;
return m_startMS;
}
unsigned int CStopWatch::elapsed()
@ -75,9 +97,9 @@ unsigned int CStopWatch::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;
unsigned long long nowMS = now.tv_sec * 1000ULL + now.tv_nsec / 1000000ULL;
return (unsigned int)offset;
return nowMS - m_startMS;
}
#endif

11
StopWatch.h
View File

@ -31,15 +31,18 @@ public:
CStopWatch();
~CStopWatch();
unsigned long start();
unsigned int elapsed();
unsigned long long time() const;
unsigned long long start();
unsigned int elapsed();
private:
#if defined(_WIN32) || defined(_WIN64)
LARGE_INTEGER m_frequency;
LARGE_INTEGER m_frequencyS;
LARGE_INTEGER m_frequencyMS;
LARGE_INTEGER m_start;
#else
struct timespec m_start;
unsigned long long m_startMS;
#endif
};