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/*-------------------------------------------------------------------------
*
* win32getrusage.c
* get information about resource utilisation
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/port/win32getrusage.c
*
*-------------------------------------------------------------------------
*/
#include "c.h"
#include <sys/resource.h>
int
getrusage(int who, struct rusage *rusage)
{
FILETIME starttime;
FILETIME exittime;
FILETIME kerneltime;
FILETIME usertime;
ULARGE_INTEGER li;
if (who != RUSAGE_SELF)
{
/* Only RUSAGE_SELF is supported in this implementation for now */
errno = EINVAL;
return -1;
}
if (rusage == (struct rusage *) NULL)
{
errno = EFAULT;
return -1;
}
memset(rusage, 0, sizeof(struct rusage));
if (GetProcessTimes(GetCurrentProcess(),
&starttime, &exittime, &kerneltime, &usertime) == 0)
{
_dosmaperr(GetLastError());
return -1;
}
/* Convert FILETIMEs (0.1 us) to struct timeval */
memcpy(&li, &kerneltime, sizeof(FILETIME));
li.QuadPart /= 10L; /* Convert to microseconds */
rusage->ru_stime.tv_sec = li.QuadPart / 1000000L;
rusage->ru_stime.tv_usec = li.QuadPart % 1000000L;
memcpy(&li, &usertime, sizeof(FILETIME));
li.QuadPart /= 10L; /* Convert to microseconds */
rusage->ru_utime.tv_sec = li.QuadPart / 1000000L;
rusage->ru_utime.tv_usec = li.QuadPart % 1000000L;
return 0;
}
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