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Bug 927355 - Print fractional milliseconds in event tracer samples. r=bsmedberg

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This commit is contained in:
Ted Mielczarek 2013-10-17 15:07:55 -04:00
parent 1ea10a6b41
commit 3bf6ebd317
1 changed files with 10 additions and 6 deletions
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16
toolkit/xre/EventTracer.cpp
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@ -45,7 +45,8 @@
* When an event servicing time exceeds the threshold, a line of the form:
* MOZ_EVENT_TRACE sample <timestamp> <duration>
* will be output, where <duration> is the number of milliseconds that
* it took for the event to be serviced.
* it took for the event to be serviced. Duration may contain a fractional
* component.
*/
#include "GeckoProfiler.h"
@ -125,7 +126,8 @@ void TracerThread(void *arg)
}
if (threadArgs->mLogTracing) {
fprintf(log, "MOZ_EVENT_TRACE start %llu\n", PR_Now() / PR_USEC_PER_MSEC);
long long now = PR_Now() / PR_USEC_PER_MSEC;
fprintf(log, "MOZ_EVENT_TRACE start %llu\n", now);
}
while (!sExit) {
@ -139,10 +141,11 @@ void TracerThread(void *arg)
if (FireAndWaitForTracerEvent()) {
TimeDuration duration = TimeStamp::Now() - start;
// Only report samples that exceed our measurement threshold.
long long now = PR_Now() / PR_USEC_PER_MSEC;
if (threadArgs->mLogTracing && duration.ToMilliseconds() > threshold) {
fprintf(log, "MOZ_EVENT_TRACE sample %llu %d\n",
PR_Now() / PR_USEC_PER_MSEC,
int(duration.ToSecondsSigDigits() * 1000));
fprintf(log, "MOZ_EVENT_TRACE sample %llu %lf\n",
now,
duration.ToMilliseconds());
}
if (next_sleep > duration.ToMilliseconds()) {
@ -161,7 +164,8 @@ void TracerThread(void *arg)
}
if (threadArgs->mLogTracing) {
fprintf(log, "MOZ_EVENT_TRACE stop %llu\n", PR_Now() / PR_USEC_PER_MSEC);
long long now = PR_Now() / PR_USEC_PER_MSEC;
fprintf(log, "MOZ_EVENT_TRACE stop %llu\n", now);
}
if (log != stdout)