diff options
Diffstat (limited to 'dom/base')
-rwxr-xr-x[-rw-r--r--] | dom/base/File.cpp | 3 | ||||
-rwxr-xr-x[-rw-r--r--] | dom/base/MultipartBlobImpl.cpp | 4 | ||||
-rwxr-xr-x | dom/base/TimerClamping.cpp | 35 | ||||
-rwxr-xr-x | dom/base/TimerClamping.h | 22 | ||||
-rwxr-xr-x[-rw-r--r--] | dom/base/moz.build | 2 |
5 files changed, 63 insertions, 3 deletions
diff --git a/dom/base/File.cpp b/dom/base/File.cpp index 46b37b976a..8602a30641 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 ba26d07f93..03bb62addd 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 0000000000..70639686b1 --- /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 0000000000..2ffd6add5f --- /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 686d76e731..0fb345d224 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', |