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win32: implement missing timersub

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Implement and wrap timersub() for Win32.

Acked-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2011-03-13 10:30:52 +00:00
parent 31d3c9b8c1
commit ad620c29c2
2 changed files with 20 additions and 5 deletions
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19
osdep.h
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@ -8,9 +8,7 @@
#include <sys/signal.h>
#endif
#ifndef _WIN32
#include <sys/time.h>
#endif
#ifndef glue
#define xglue(x, y) x ## y
@ -131,4 +129,21 @@ int qemu_madvise(void *addr, size_t len, int advice);
int qemu_create_pidfile(const char *filename);
#ifdef _WIN32
static inline void qemu_timersub(const struct timeval *val1,
const struct timeval *val2,
struct timeval *res)
{
res->tv_sec = val1->tv_sec - val2->tv_sec;
if (val1->tv_usec < val2->tv_usec) {
res->tv_sec--;
res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000;
} else {
res->tv_usec = val1->tv_usec - val2->tv_usec;
}
}
#else
#define qemu_timersub timersub
#endif
#endif