The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/toolkit/components/startup/StartupTimeline.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,67 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +#include "StartupTimeline.h"
     1.9 +#include "mozilla/Telemetry.h"
    1.10 +#include "mozilla/TimeStamp.h"
    1.11 +#include "nsXULAppAPI.h"
    1.12 +
    1.13 +namespace mozilla {
    1.14 +
    1.15 +TimeStamp StartupTimeline::sStartupTimeline[StartupTimeline::MAX_EVENT_ID];
    1.16 +const char *StartupTimeline::sStartupTimelineDesc[StartupTimeline::MAX_EVENT_ID] = {
    1.17 +#define mozilla_StartupTimeline_Event(ev, desc) desc,
    1.18 +#include "StartupTimeline.h"
    1.19 +#undef mozilla_StartupTimeline_Event
    1.20 +};
    1.21 +
    1.22 +/**
    1.23 + * Implementation of XRE_StartupTimelineRecord()
    1.24 + *
    1.25 + * @param aEvent Same as XRE_StartupTimelineRecord() equivalent argument
    1.26 + * @param aWhen  Same as XRE_StartupTimelineRecord() equivalent argument
    1.27 + */
    1.28 +void
    1.29 +StartupTimelineRecordExternal(int aEvent, uint64_t aWhen)
    1.30 +{
    1.31 +#if XP_WIN
    1.32 +  TimeStamp ts = TimeStampValue(aWhen, 0, 0);
    1.33 +#else
    1.34 +  TimeStamp ts = TimeStampValue(aWhen);
    1.35 +#endif
    1.36 +  bool error = false;
    1.37 +
    1.38 +  // Since the timestamp comes from an external source validate it before
    1.39 +  // recording it and log a telemetry error if it appears inconsistent.
    1.40 +  if (ts < TimeStamp::ProcessCreation(error)) {
    1.41 +    Telemetry::Accumulate(Telemetry::STARTUP_MEASUREMENT_ERRORS,
    1.42 +      (StartupTimeline::Event)aEvent);
    1.43 +  } else {
    1.44 +    StartupTimeline::Record((StartupTimeline::Event)aEvent, ts);
    1.45 +  }
    1.46 +}
    1.47 +
    1.48 +} /* namespace mozilla */
    1.49 +
    1.50 +/**
    1.51 + * The XRE_StartupTimeline_Record function is to be used by embedding
    1.52 + * applications that can't use mozilla::StartupTimeline::Record() directly.
    1.53 + *
    1.54 + * It can create timestamps from arbitrary time values and sanitizies them to
    1.55 + * ensure that they are not inconsistent with those captured using monotonic
    1.56 + * timers. The value of aWhen must have been captured using the same timer
    1.57 + * used by the platform's mozilla::TimeStamp implementation. Erroneous values
    1.58 + * will be flagged as telemetry errors.
    1.59 + *
    1.60 + * @param aEvent The event to be recorded, must correspond to an element of the
    1.61 + *               mozilla::StartupTimeline::Event enumartion
    1.62 + * @param aWhen  The time at which the event happened, must have been recorded
    1.63 + *               using the same timer as the platform's mozilla::TimeStamp
    1.64 + *               implementation
    1.65 + */
    1.66 +void
    1.67 +XRE_StartupTimelineRecord(int aEvent, PRTime aWhen)
    1.68 +{
    1.69 +  mozilla::StartupTimelineRecordExternal(aEvent, aWhen);
    1.70 +}