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-rwxr-xr-x[-rw-r--r--]dom/base/File.cpp3
-rwxr-xr-x[-rw-r--r--]dom/base/MultipartBlobImpl.cpp4
-rwxr-xr-xdom/base/TimerClamping.cpp35
-rwxr-xr-xdom/base/TimerClamping.h22
-rwxr-xr-x[-rw-r--r--]dom/base/moz.build2
-rwxr-xr-x[-rw-r--r--]dom/console/Console.cpp3
-rwxr-xr-x[-rw-r--r--]dom/events/Event.cpp7
-rwxr-xr-x[-rw-r--r--]dom/events/Event.h1
-rwxr-xr-x[-rw-r--r--]dom/media/DOMMediaStream.cpp5
-rwxr-xr-x[-rw-r--r--]dom/media/webaudio/AudioContext.cpp3
-rwxr-xr-x[-rw-r--r--]dom/performance/Performance.cpp5
-rwxr-xr-x[-rw-r--r--]dom/performance/PerformanceTiming.cpp22
-rwxr-xr-x[-rw-r--r--]dom/performance/PerformanceTiming.h25
-rwxr-xr-x[-rw-r--r--]js/src/jsdate.cpp5
14 files changed, 109 insertions, 33 deletions
diff --git a/dom/base/File.cpp b/dom/base/File.cpp
index 46b37b976..8602a3064 100644..100755
--- a/dom/base/File.cpp
+++ b/dom/base/File.cpp
@@ -29,6 +29,7 @@
#include "nsStringStream.h"
#include "nsJSUtils.h"
#include "nsPrintfCString.h"
+#include "mozilla/TimerClamping.h"
#include "mozilla/SHA1.h"
#include "mozilla/CheckedInt.h"
#include "mozilla/Preferences.h"
@@ -727,7 +728,7 @@ BlobImplBase::GetLastModified(ErrorResult& aRv)
mLastModificationDate = PR_Now();
}
- return mLastModificationDate / PR_USEC_PER_MSEC;
+ return TimerClamping::ReduceUsTimeValue(mLastModificationDate) / PR_USEC_PER_MSEC;
}
void
diff --git a/dom/base/MultipartBlobImpl.cpp b/dom/base/MultipartBlobImpl.cpp
index ba26d07f9..03bb62add 100644..100755
--- a/dom/base/MultipartBlobImpl.cpp
+++ b/dom/base/MultipartBlobImpl.cpp
@@ -17,6 +17,7 @@
#include "nsContentUtils.h"
#include "nsIScriptError.h"
#include "nsIXPConnect.h"
+#include "mozilla/TimerClamping.h"
#include <algorithm>
using namespace mozilla;
@@ -270,8 +271,7 @@ MultipartBlobImpl::SetLengthAndModifiedDate(ErrorResult& aRv)
// var x = new Date(); var f = new File(...);
// x.getTime() < f.dateModified.getTime()
// could fail.
- mLastModificationDate =
- lastModifiedSet ? lastModified * PR_USEC_PER_MSEC : JS_Now();
+ mLastModificationDate = TimerClamping::ReduceUsTimeValue(lastModifiedSet ? lastModified * PR_USEC_PER_MSEC : JS_Now());
}
}
diff --git a/dom/base/TimerClamping.cpp b/dom/base/TimerClamping.cpp
new file mode 100755
index 000000000..70639686b
--- /dev/null
+++ b/dom/base/TimerClamping.cpp
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "TimerClamping.h"
+
+namespace mozilla {
+
+/* static */
+double
+TimerClamping::ReduceSTimeValue(double aTime)
+{
+ static const double maxResolutionS = .002;
+ return floor(aTime / maxResolutionS) * maxResolutionS;
+}
+
+/* static */
+double
+TimerClamping::ReduceMsTimeValue(double aTime)
+{
+ static const double maxResolutionMs = 2;
+ return floor(aTime / maxResolutionMs) * maxResolutionMs;
+}
+
+/* static */
+double
+TimerClamping::ReduceUsTimeValue(double aTime)
+{
+ static const double maxResolutionUs = 2000;
+ return floor(aTime / maxResolutionUs) * maxResolutionUs;
+}
+
+} \ No newline at end of file
diff --git a/dom/base/TimerClamping.h b/dom/base/TimerClamping.h
new file mode 100755
index 000000000..2ffd6add5
--- /dev/null
+++ b/dom/base/TimerClamping.h
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef TimerClamping_h___
+#define TimerClamping_h___
+
+namespace mozilla {
+
+class TimerClamping
+{
+public:
+ static double ReduceSTimeValue(double aTime);
+ static double ReduceMsTimeValue(double aTime);
+ static double ReduceUsTimeValue(double aTime);
+};
+
+}
+
+#endif /* TimerClamping_h___ */ \ No newline at end of file
diff --git a/dom/base/moz.build b/dom/base/moz.build
index 686d76e73..0fb345d22 100644..100755
--- a/dom/base/moz.build
+++ b/dom/base/moz.build
@@ -143,6 +143,7 @@ EXPORTS.mozilla += [
'CORSMode.h',
'FeedWriterEnabled.h',
'TextInputProcessor.h',
+ 'TimerClamping.h',
'UseCounter.h',
]
@@ -363,6 +364,7 @@ UNIFIED_SOURCES += [
'TextInputProcessor.cpp',
'ThirdPartyUtil.cpp',
'Timeout.cpp',
+ 'TimerClamping.cpp',
'TreeWalker.cpp',
'WebKitCSSMatrix.cpp',
'WebSocket.cpp',
diff --git a/dom/console/Console.cpp b/dom/console/Console.cpp
index 9ede26501..79e3eadc5 100644..100755
--- a/dom/console/Console.cpp
+++ b/dom/console/Console.cpp
@@ -30,6 +30,7 @@
#include "nsContentUtils.h"
#include "nsDocShell.h"
#include "nsProxyRelease.h"
+#include "mozilla/TimerClamping.h"
#include "mozilla/ConsoleTimelineMarker.h"
#include "mozilla/TimestampTimelineMarker.h"
@@ -1338,7 +1339,7 @@ Console::MethodInternal(JSContext* aCx, MethodName aMethodName,
TimeDuration duration =
mozilla::TimeStamp::Now() - workerPrivate->NowBaseTimeStamp();
- monotonicTimer = duration.ToMilliseconds();
+ monotonicTimer = TimerClamping::ReduceMsTimeValue(duration.ToMilliseconds());
}
}
diff --git a/dom/events/Event.cpp b/dom/events/Event.cpp
index a85a0d66b..2af34136e 100644..100755
--- a/dom/events/Event.cpp
+++ b/dom/events/Event.cpp
@@ -32,6 +32,7 @@
#include "nsJSEnvironment.h"
#include "nsLayoutUtils.h"
#include "nsPIWindowRoot.h"
+#include "mozilla/TimerClamping.h"
#include "WorkerPrivate.h"
namespace mozilla {
@@ -1085,6 +1086,12 @@ Event::DefaultPrevented(JSContext* aCx) const
double
Event::TimeStamp() const
{
+ return TimerClamping::ReduceMsTimeValue(TimeStampImpl());
+}
+
+double
+Event::TimeStampImpl() const
+{
if (!sReturnHighResTimeStamp) {
return static_cast<double>(mEvent->mTime);
}
diff --git a/dom/events/Event.h b/dom/events/Event.h
index 4ac6a68d5..c28226e8a 100644..100755
--- a/dom/events/Event.h
+++ b/dom/events/Event.h
@@ -62,6 +62,7 @@ private:
void ConstructorInit(EventTarget* aOwner,
nsPresContext* aPresContext,
WidgetEvent* aEvent);
+ double TimeStampImpl() const;
public:
static Event* FromSupports(nsISupports* aSupports)
diff --git a/dom/media/DOMMediaStream.cpp b/dom/media/DOMMediaStream.cpp
index 6794ee32f..c1d451035 100644..100755
--- a/dom/media/DOMMediaStream.cpp
+++ b/dom/media/DOMMediaStream.cpp
@@ -9,6 +9,7 @@
#include "nsIScriptError.h"
#include "nsIUUIDGenerator.h"
#include "nsPIDOMWindow.h"
+#include "mozilla/TimerClamping.h"
#include "mozilla/dom/MediaStreamBinding.h"
#include "mozilla/dom/MediaStreamTrackEvent.h"
#include "mozilla/dom/LocalMediaStreamBinding.h"
@@ -544,8 +545,8 @@ DOMMediaStream::CurrentTime()
if (!mPlaybackStream) {
return 0.0;
}
- return mPlaybackStream->
- StreamTimeToSeconds(mPlaybackStream->GetCurrentTime() - mLogicalStreamStartTime);
+ return TimerClamping::ReduceSTimeValue(mPlaybackStream->
+ StreamTimeToSeconds(mPlaybackStream->GetCurrentTime() - mLogicalStreamStartTime));
}
void
diff --git a/dom/media/webaudio/AudioContext.cpp b/dom/media/webaudio/AudioContext.cpp
index a36eda621..85842c811 100644..100755
--- a/dom/media/webaudio/AudioContext.cpp
+++ b/dom/media/webaudio/AudioContext.cpp
@@ -41,6 +41,7 @@
#include "nsNetUtil.h"
#include "nsPIDOMWindow.h"
#include "nsPrintfCString.h"
+#include "mozilla/TimerClamping.h"
#include "OscillatorNode.h"
#include "PannerNode.h"
#include "PeriodicWave.h"
@@ -746,7 +747,7 @@ double
AudioContext::CurrentTime() const
{
MediaStream* stream = Destination()->Stream();
- return stream->StreamTimeToSeconds(stream->GetCurrentTime());
+ return TimerClamping::ReduceSTimeValue(stream->StreamTimeToSeconds(stream->GetCurrentTime()));
}
void
diff --git a/dom/performance/Performance.cpp b/dom/performance/Performance.cpp
index 17273c55d..8dc239b05 100644..100755
--- a/dom/performance/Performance.cpp
+++ b/dom/performance/Performance.cpp
@@ -21,6 +21,7 @@
#include "mozilla/dom/PerformanceObserverBinding.h"
#include "mozilla/IntegerPrintfMacros.h"
#include "mozilla/Preferences.h"
+#include "mozilla/TimerClamping.h"
#include "WorkerPrivate.h"
#include "WorkerRunnable.h"
@@ -228,9 +229,9 @@ Performance::ClearResourceTimings()
DOMHighResTimeStamp
Performance::RoundTime(double aTime) const
{
- // Round down to the nearest 20us, because if the timer is too accurate people
+ // Round down to the nearest 2ms, because if the timer is too accurate people
// can do nasty timing attacks with it.
- const double maxResolutionMs = 0.020;
+ const double maxResolutionMs = 2;
return floor(aTime / maxResolutionMs) * maxResolutionMs;
}
diff --git a/dom/performance/PerformanceTiming.cpp b/dom/performance/PerformanceTiming.cpp
index 4070b6a0f..97bbcb0ca 100644..100755
--- a/dom/performance/PerformanceTiming.cpp
+++ b/dom/performance/PerformanceTiming.cpp
@@ -21,7 +21,7 @@ PerformanceTiming::PerformanceTiming(Performance* aPerformance,
DOMHighResTimeStamp aZeroTime)
: mPerformance(aPerformance),
mFetchStart(0.0),
- mZeroTime(aZeroTime),
+ mZeroTime(TimerClamping::ReduceMsTimeValue(aZeroTime)),
mRedirectCount(0),
mTimingAllowed(true),
mAllRedirectsSameOrigin(true),
@@ -117,7 +117,7 @@ PerformanceTiming::FetchStartHighRes()
? TimeStampToDOMHighRes(mAsyncOpen)
: 0.0;
}
- return mFetchStart;
+ return TimerClamping::ReduceMsTimeValue(mFetchStart);
}
DOMTimeMilliSec
@@ -203,7 +203,7 @@ PerformanceTiming::RedirectStartHighRes()
if (!nsContentUtils::IsPerformanceTimingEnabled() || !IsInitialized()) {
return mZeroTime;
}
- return TimeStampToDOMHighResOrFetchStart(mRedirectStart);
+ return TimeStampToReducedDOMHighResOrFetchStart(mRedirectStart);
}
DOMTimeMilliSec
@@ -236,7 +236,7 @@ PerformanceTiming::RedirectEndHighRes()
if (!nsContentUtils::IsPerformanceTimingEnabled() || !IsInitialized()) {
return mZeroTime;
}
- return TimeStampToDOMHighResOrFetchStart(mRedirectEnd);
+ return TimeStampToReducedDOMHighResOrFetchStart(mRedirectEnd);
}
DOMTimeMilliSec
@@ -259,7 +259,7 @@ PerformanceTiming::DomainLookupStartHighRes()
if (!nsContentUtils::IsPerformanceTimingEnabled() || !IsInitialized()) {
return mZeroTime;
}
- return TimeStampToDOMHighResOrFetchStart(mDomainLookupStart);
+ return TimeStampToReducedDOMHighResOrFetchStart(mDomainLookupStart);
}
DOMTimeMilliSec
@@ -276,7 +276,7 @@ PerformanceTiming::DomainLookupEndHighRes()
}
// Bug 1155008 - nsHttpTransaction is racy. Return DomainLookupStart when null
return mDomainLookupEnd.IsNull() ? DomainLookupStartHighRes()
- : TimeStampToDOMHighRes(mDomainLookupEnd);
+ : TimerClamping::ReduceMsTimeValue(TimeStampToDOMHighRes(mDomainLookupEnd));
}
DOMTimeMilliSec
@@ -292,7 +292,7 @@ PerformanceTiming::ConnectStartHighRes()
return mZeroTime;
}
return mConnectStart.IsNull() ? DomainLookupEndHighRes()
- : TimeStampToDOMHighRes(mConnectStart);
+ : TimerClamping::ReduceMsTimeValue(TimeStampToDOMHighRes(mConnectStart));
}
DOMTimeMilliSec
@@ -329,7 +329,7 @@ PerformanceTiming::ConnectEndHighRes()
}
// Bug 1155008 - nsHttpTransaction is racy. Return ConnectStart when null
return mConnectEnd.IsNull() ? ConnectStartHighRes()
- : TimeStampToDOMHighRes(mConnectEnd);
+ : TimerClamping::ReduceMsTimeValue(TimeStampToDOMHighRes(mConnectEnd));
}
DOMTimeMilliSec
@@ -344,7 +344,7 @@ PerformanceTiming::RequestStartHighRes()
if (!nsContentUtils::IsPerformanceTimingEnabled() || !IsInitialized()) {
return mZeroTime;
}
- return TimeStampToDOMHighResOrFetchStart(mRequestStart);
+ return TimeStampToReducedDOMHighResOrFetchStart(mRequestStart);
}
DOMTimeMilliSec
@@ -363,7 +363,7 @@ PerformanceTiming::ResponseStartHighRes()
(!mCacheReadStart.IsNull() && mCacheReadStart < mResponseStart)) {
mResponseStart = mCacheReadStart;
}
- return TimeStampToDOMHighResOrFetchStart(mResponseStart);
+ return TimeStampToReducedDOMHighResOrFetchStart(mResponseStart);
}
DOMTimeMilliSec
@@ -384,7 +384,7 @@ PerformanceTiming::ResponseEndHighRes()
}
// Bug 1155008 - nsHttpTransaction is racy. Return ResponseStart when null
return mResponseEnd.IsNull() ? ResponseStartHighRes()
- : TimeStampToDOMHighRes(mResponseEnd);
+ : TimerClamping::ReduceMsTimeValue(TimeStampToDOMHighRes(mResponseEnd));
}
DOMTimeMilliSec
diff --git a/dom/performance/PerformanceTiming.h b/dom/performance/PerformanceTiming.h
index 0bc73fd3f..edfac8d02 100644..100755
--- a/dom/performance/PerformanceTiming.h
+++ b/dom/performance/PerformanceTiming.h
@@ -10,6 +10,7 @@
#include "mozilla/Attributes.h"
#include "nsContentUtils.h"
#include "nsDOMNavigationTiming.h"
+#include "mozilla/TimerClamping.h"
#include "nsWrapperCache.h"
#include "Performance.h"
@@ -68,10 +69,10 @@ public:
* page), if the given TimeStamp is valid. Otherwise, it will return
* the FetchStart timing value.
*/
- inline DOMHighResTimeStamp TimeStampToDOMHighResOrFetchStart(TimeStamp aStamp)
+ inline DOMHighResTimeStamp TimeStampToReducedDOMHighResOrFetchStart(TimeStamp aStamp)
{
return (!aStamp.IsNull())
- ? TimeStampToDOMHighRes(aStamp)
+ ? TimerClamping::ReduceMsTimeValue(TimeStampToDOMHighRes(aStamp))
: FetchStartHighRes();
}
@@ -119,7 +120,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetNavigationStart();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetNavigationStart());
}
DOMTimeMilliSec UnloadEventStart()
@@ -127,7 +128,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetUnloadEventStart();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetUnloadEventStart());
}
DOMTimeMilliSec UnloadEventEnd()
@@ -135,7 +136,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetUnloadEventEnd();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetUnloadEventEnd());
}
uint16_t GetRedirectCount() const;
@@ -185,7 +186,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetDomLoading();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetDomLoading());
}
DOMTimeMilliSec DomInteractive() const
@@ -193,7 +194,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetDomInteractive();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetDomInteractive());
}
DOMTimeMilliSec DomContentLoadedEventStart() const
@@ -201,7 +202,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetDomContentLoadedEventStart();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetDomContentLoadedEventStart());
}
DOMTimeMilliSec DomContentLoadedEventEnd() const
@@ -209,7 +210,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetDomContentLoadedEventEnd();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetDomContentLoadedEventEnd());
}
DOMTimeMilliSec DomComplete() const
@@ -217,7 +218,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetDomComplete();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetDomComplete());
}
DOMTimeMilliSec LoadEventStart() const
@@ -225,7 +226,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetLoadEventStart();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetLoadEventStart());
}
DOMTimeMilliSec LoadEventEnd() const
@@ -233,7 +234,7 @@ public:
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
- return GetDOMTiming()->GetLoadEventEnd();
+ return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetLoadEventEnd());
}
private:
diff --git a/js/src/jsdate.cpp b/js/src/jsdate.cpp
index d73fb93d2..ccaeda2a3 100644..100755
--- a/js/src/jsdate.cpp
+++ b/js/src/jsdate.cpp
@@ -1232,7 +1232,10 @@ date_parse(JSContext* cx, unsigned argc, Value* vp)
static ClippedTime
NowAsMillis()
{
- return TimeClip(static_cast<double>(PRMJ_Now()) / PRMJ_USEC_PER_MSEC);
+ const double maxResolutionMs = 2;
+ double timestamp = static_cast<double>(PRMJ_Now()) / PRMJ_USEC_PER_MSEC;
+ timestamp = floor(timestamp / maxResolutionMs) * maxResolutionMs;
+ return TimeClip(timestamp);
}
bool
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 15:30:44 +0000