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/* timers.c
*
* COPYRIGHT (c) 1995 by AT&T Bell Laboratories.
*
* OS independent timer routines; these rely on a OS dependent implementation
* of the following function:
*
* void GetCPUTime (Time_t *user_t, Time_t *sys_t);
*/
#include "ml-base.h"
#include "vproc-state.h"
#include "ml-timer.h"
/* ResetTimers:
*
* Clear the GC timers.
*/
void ResetTimers (vproc_state_t *vsp)
{
vsp->vp_gcTime->seconds = 0;
vsp->vp_gcTime->uSeconds = 0;
} /* end of ResetTimers. */
/* StartGCTimer:
*/
void StartGCTimer (vproc_state_t *vsp)
{
GetCPUTime (vsp->vp_gcTime0, NIL(Time_t *));
} /* end of StartGCTimer */
/* StopGCTimer:
*
* Stop the garbage collection timer and update the cumulative garbage collection
* time. If time is not NIL, then return the time (in ms.) spent since
* the start of the GC.
*/
void StopGCTimer (vproc_state_t *vsp, long *time)
{
int sec, usec;
Time_t t1;
Time_t *gt0 = vsp->vp_gcTime0;
Time_t *gt = vsp->vp_gcTime;
GetCPUTime (&t1, NIL(Time_t *));
sec = t1.seconds - gt0->seconds;
usec = t1.uSeconds - gt0->uSeconds;
if (time != NIL(long *)) {
if (usec < 0) {
sec--; usec += 1000000;
}
else if (usec > 1000000) {
sec++; usec -= 1000000;
}
*time = (usec/1000 + sec*1000);
}
sec = gt->seconds + sec;
usec = gt->uSeconds + usec;
if (usec < 0) {
sec--; usec += 1000000;
}
else if (usec > 1000000) {
sec++; usec -= 1000000;
}
gt->seconds = sec;
gt->uSeconds = usec;
} /* end of StopGCTimer */
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