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Bug 1207412 - Make SystemTimeConverter use TimeStamp::Now() when converting times; r=karlt

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This commit is contained in:
Brian Birtles 2015-10-26 09:29:54 +09:00
parent 99a0bf4e7f
commit cc422b4d45
1 changed files with 4 additions and 6 deletions
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10
widget/SystemTimeConverter.h
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@ -24,8 +24,7 @@ namespace mozilla {
//
// For performance reasons, this class is careful to minimize calls to the
// native "current time" function (e.g. gdk_x11_server_get_time) since this can
// be slow. Furthermore, it uses TimeStamp::NowLowRes instead of TimeStamp::Now
// except when establishing the reference time.
// be slow.
template <typename Time>
class SystemTimeConverter {
public:
@ -49,7 +48,7 @@ public:
if (mReferenceTimeStamp.IsNull()) {
UpdateReferenceTime(aTime, aCurrentTimeGetter);
}
TimeStamp roughlyNow = TimeStamp::NowLoRes();
TimeStamp roughlyNow = TimeStamp::Now();
// Check for skew between the source of Time values and TimeStamp values.
// We do this by comparing two durations (both in ms):
@ -57,7 +56,7 @@ public:
// i. The duration from the reference time to the passed-in time.
// (timeDelta in the diagram below)
// ii. The duration from the reference timestamp to the current time
// based on TimeStamp::NowLoRes.
// based on TimeStamp::Now.
// (timeStampDelta in the diagram below)
//
// Normally, we'd expect (ii) to be slightly larger than (i) to account
@ -89,8 +88,7 @@ public:
Time deltaFromNow;
bool newer = IsTimeNewerThanTimestamp(aTime, roughlyNow, &deltaFromNow);
// TimeStamp::NowLoRes should be accurate to within 15.6ms so we need to
// be at least that generous when detecting clock skew.
// Tolerance when detecting clock skew.
static const Time kTolerance = 30;
// Check for forwards skew