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Add a WIN32 equivalent for gettimeofday

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This function does not really returns the "time of day", but it will suffice to evaluate elapsed times.
This commit is contained in:
Vincent van Ravesteijn 2013-03-24 13:35:44 +01:00
parent 2662386077
commit 367126bf24
1 changed files with 22 additions and 0 deletions
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22
src/support/pmprof.h
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@ -11,7 +11,11 @@
#ifndef PMPROF_H
#define PMPROF_H
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/time.h>
#endif
#include <iostream>
/** How to use this trivial profiler:
@ -92,11 +96,29 @@
*/
#ifdef _WIN32
/* This function does not really returns the "time of day",
* but it will suffice to evaluate elapsed times.
*/
int gettimeofday(struct timeval * tv, struct timezone * /*tz*/)
{
LARGE_INTEGER frequency, t;
QueryPerformanceFrequency(&frequency);
QueryPerformanceCounter(&t);
tv->tv_sec = long(t.QuadPart / frequency.QuadPart);
tv->tv_usec = long((1000000.0 * (t.QuadPart % frequency.QuadPart)) / frequency.QuadPart);
return 0;
}
#endif // _WIN32
/* Helper class for gathering data. Instantiate this as a static
* variable, so that its destructor will be executed when the program
* ends.
*/
class PMProfStat {
public:
PMProfStat(char const * name)