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If it's available, try to use clock_gettime(CLOCK_MONOTONIC) rather than

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gettimeofday(), since the former shouldn't warp when the user resets the clock.

[originally from svn r5528]
This commit is contained in:
Ben Harris 2005-03-19 19:02:53 +00:00
parent 68d88605ae
commit f812865ceb
1 changed files with 11 additions and 5 deletions
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16
unix/uxmisc.c
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@ -4,21 +4,27 @@
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <pwd.h>
#include "putty.h"
/*
* We want to use milliseconds rather than microseconds or nanoseconds,
* because we need a decent number of them to fit into a 32-bit
* word so it can be used for keepalives.
*/
unsigned long getticks(void)
{
struct timeval tv;
#ifdef CLOCK_MONOTONIC
struct timespec ts;
if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
#endif
gettimeofday(&tv, NULL);
/*
* We want to use milliseconds rather than microseconds,
* because we need a decent number of them to fit into a 32-bit
* word so it can be used for keepalives.
*/
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}