gecko/toolkit/components/startup/StartupTimeline.cpp

68 lines
2.3 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "StartupTimeline.h"
#include "mozilla/Telemetry.h"
#include "mozilla/TimeStamp.h"
#include "nsXULAppAPI.h"
namespace mozilla {
TimeStamp StartupTimeline::sStartupTimeline[StartupTimeline::MAX_EVENT_ID];
const char *StartupTimeline::sStartupTimelineDesc[StartupTimeline::MAX_EVENT_ID] = {
#define mozilla_StartupTimeline_Event(ev, desc) desc,
#include "StartupTimeline.h"
#undef mozilla_StartupTimeline_Event
};
/**
* Implementation of XRE_StartupTimelineRecord()
*
* @param aEvent Same as XRE_StartupTimelineRecord() equivalent argument
* @param aWhen Same as XRE_StartupTimelineRecord() equivalent argument
*/
void
StartupTimelineRecordExternal(int aEvent, uint64_t aWhen)
{
#if XP_WIN
TimeStamp ts = TimeStampValue(aWhen, 0, 0);
#else
TimeStamp ts = TimeStampValue(aWhen);
#endif
bool error = false;
// Since the timestamp comes from an external source validate it before
// recording it and log a telemetry error if it appears inconsistent.
if (ts < TimeStamp::ProcessCreation(error)) {
Telemetry::Accumulate(Telemetry::STARTUP_MEASUREMENT_ERRORS,
(StartupTimeline::Event)aEvent);
} else {
StartupTimeline::Record((StartupTimeline::Event)aEvent, ts);
}
}
} /* namespace mozilla */
/**
* The XRE_StartupTimeline_Record function is to be used by embedding
* applications that can't use mozilla::StartupTimeline::Record() directly.
*
* It can create timestamps from arbitrary time values and sanitizies them to
* ensure that they are not inconsistent with those captured using monotonic
* timers. The value of aWhen must have been captured using the same timer
* used by the platform's mozilla::TimeStamp implementation. Erroneous values
* will be flagged as telemetry errors.
*
* @param aEvent The event to be recorded, must correspond to an element of the
* mozilla::StartupTimeline::Event enumartion
* @param aWhen The time at which the event happened, must have been recorded
* using the same timer as the platform's mozilla::TimeStamp
* implementation
*/
void
XRE_StartupTimelineRecord(int aEvent, PRTime aWhen)
{
mozilla::StartupTimelineRecordExternal(aEvent, aWhen);
}