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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/169210">169210</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2014-05-22 12:06:49 -0700 (Thu, 22 May 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/169209">r169209</a>. <rdar://problem/16933311></pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari53834branchSourceWebCoreChangeLog">branches/safari-538.34-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreModulesmediasourceSampleMapcpp">branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.cpp</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreModulesmediasourceSampleMaph">branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.h</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreModulesmediasourceSourceBuffercpp">branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreModulesmediasourceSourceBufferh">branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.h</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreplatformMediaSampleh">branches/safari-538.34-branch/Source/WebCore/platform/MediaSample.h</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreplatformgraphicsavfoundationobjcSourceBufferPrivateAVFObjCmm">branches/safari-538.34-branch/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm</a></li>
<li><a href="#branchessafari53834branchSourceWebCoreplatformmockmediasourceMockSourceBufferPrivatecpp">branches/safari-538.34-branch/Source/WebCore/platform/mock/mediasource/MockSourceBufferPrivate.cpp</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari53834branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/ChangeLog (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/ChangeLog 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/ChangeLog 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -1,3 +1,43 @@
</span><ins>+2014-05-22 Matthew Hanson <matthew_hanson@apple.com>
+
+ Merge r169209
+
+ 2014-05-22 Jer Noble <jer.noble@apple.com>
+
+ [MSE] Stored samples are not freed when SourceBuffer is removed from MediaSource
+ https://bugs.webkit.org/show_bug.cgi?id=133174
+
+ Reviewed by Eric Carlson.
+
+ Clear out stored MediaSamples from SourceBuffer's TrackBuffer storage when
+ aborting loading. Also, report the memory cost of those samples, so that the
+ SourceBuffer will be GCd more readily.
+
+ Add a mechanism for reporting the size of a MediaSample:
+ * Modules/mediasource/SourceBuffer.h:
+ * platform/MediaSample.h:
+ * platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm:
+ * platform/mock/mediasource/MockSourceBufferPrivate.cpp:
+
+ Track the memory usage of a SampleMap when adding and removing samples, as well
+ as allowing the SampleMap to be cleared wholesale:
+ * Modules/mediasource/SampleMap.cpp:
+ (WebCore::SampleMap::clear): Release all stored MediaSamples.
+ (WebCore::SampleMap::addSample): Update m_totalSize.
+ (WebCore::SampleMap::removeSample): Ditto.
+ * Modules/mediasource/SampleMap.h:
+ (WebCore::SampleMap::SampleMap): Initialize m_totalSize.
+ (WebCore::SampleMap::sizeInBytes): Simple accessor.
+
+ Clear the stored samples when loading is aborted, and report the extra memory
+ cost
+ * Modules/mediasource/SourceBuffer.cpp:
+ (WebCore::SourceBuffer::SourceBuffer): Initialize m_reportedExtraMemoryCost.
+ (WebCore::SourceBuffer::removedFromMediaSource): Clear all stored samples.
+ (WebCore::SourceBuffer::sourceBufferPrivateAppendComplete): Call reportExtraMemoryCost().
+ (WebCore::SourceBuffer::reportExtraMemoryCost): Inform the vm of the new
+ extra memory cost incurred by the object.
+
</ins><span class="cx"> 2014-05-20 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><span class="cx"> Rollout r169076.
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreModulesmediasourceSampleMapcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.cpp (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.cpp 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.cpp 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -80,12 +80,21 @@
</span><span class="cx"> }
</span><span class="cx"> };
</span><span class="cx">
</span><ins>+void SampleMap::clear()
+{
+ m_presentationSamples.clear();
+ m_decodeSamples.clear();
+ m_totalSize = 0;
+}
+
</ins><span class="cx"> void SampleMap::addSample(PassRefPtr<MediaSample> prpSample)
</span><span class="cx"> {
</span><span class="cx"> RefPtr<MediaSample> sample = prpSample;
</span><span class="cx"> ASSERT(sample);
</span><span class="cx"> m_presentationSamples.insert(MapType::value_type(sample->presentationTime(), sample));
</span><span class="cx"> m_decodeSamples.insert(MapType::value_type(sample->decodeTime(), sample));
</span><ins>+
+ m_totalSize += sample->sizeInBytes();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void SampleMap::removeSample(MediaSample* sample)
</span><span class="lines">@@ -93,6 +102,8 @@
</span><span class="cx"> ASSERT(sample);
</span><span class="cx"> m_presentationSamples.erase(sample->presentationTime());
</span><span class="cx"> m_decodeSamples.erase(sample->decodeTime());
</span><ins>+
+ m_totalSize -= sample->sizeInBytes();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> SampleMap::iterator SampleMap::findSampleContainingPresentationTime(const MediaTime& time)
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreModulesmediasourceSampleMaph"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.h (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.h 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SampleMap.h 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -44,8 +44,15 @@
</span><span class="cx"> typedef std::pair<iterator, iterator> iterator_range;
</span><span class="cx"> typedef std::pair<reverse_iterator, reverse_iterator> reverse_iterator_range;
</span><span class="cx">
</span><ins>+ SampleMap()
+ : m_totalSize(0)
+ {
+ }
+
+ void clear();
</ins><span class="cx"> void addSample(PassRefPtr<MediaSample>);
</span><span class="cx"> void removeSample(MediaSample*);
</span><ins>+ size_t sizeInBytes() const { return m_totalSize; }
</ins><span class="cx">
</span><span class="cx"> iterator presentationBegin() { return m_presentationSamples.begin(); }
</span><span class="cx"> iterator presentationEnd() { return m_presentationSamples.end(); }
</span><span class="lines">@@ -73,6 +80,7 @@
</span><span class="cx"> private:
</span><span class="cx"> MapType m_presentationSamples;
</span><span class="cx"> MapType m_decodeSamples;
</span><ins>+ size_t m_totalSize;
</ins><span class="cx"> };
</span><span class="cx">
</span><span class="cx"> }
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreModulesmediasourceSourceBuffercpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -49,6 +49,9 @@
</span><span class="cx"> #include "TimeRanges.h"
</span><span class="cx"> #include "VideoTrackList.h"
</span><span class="cx"> #include <map>
</span><ins>+#include <runtime/JSCInlines.h>
+#include <runtime/JSLock.h>
+#include <runtime/VM.h>
</ins><span class="cx"> #include <wtf/CurrentTime.h>
</span><span class="cx"> #include <wtf/NeverDestroyed.h>
</span><span class="cx">
</span><span class="lines">@@ -103,6 +106,7 @@
</span><span class="cx"> , m_timeOfBufferingMonitor(monotonicallyIncreasingTime())
</span><span class="cx"> , m_bufferedSinceLastMonitor(0)
</span><span class="cx"> , m_averageBufferRate(0)
</span><ins>+ , m_reportedExtraMemoryCost(0)
</ins><span class="cx"> , m_pendingRemoveStart(MediaTime::invalidTime())
</span><span class="cx"> , m_pendingRemoveEnd(MediaTime::invalidTime())
</span><span class="cx"> , m_removeTimer(this, &SourceBuffer::removeTimerFired)
</span><span class="lines">@@ -289,6 +293,11 @@
</span><span class="cx">
</span><span class="cx"> abortIfUpdating();
</span><span class="cx">
</span><ins>+ for (auto& trackBufferPair : m_trackBufferMap.values()) {
+ trackBufferPair.samples.clear();
+ trackBufferPair.decodeQueue.clear();
+ }
+
</ins><span class="cx"> m_private->removedFromMediaSource();
</span><span class="cx"> m_source = 0;
</span><span class="cx"> m_asyncEventQueue.close();
</span><span class="lines">@@ -446,6 +455,8 @@
</span><span class="cx">
</span><span class="cx"> // 6. Asynchronously run the buffer append algorithm.
</span><span class="cx"> m_appendBufferTimer.startOneShot(0);
</span><ins>+
+ reportExtraMemoryCost();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void SourceBuffer::appendBufferTimerFired(Timer<SourceBuffer>&)
</span><span class="lines">@@ -516,6 +527,8 @@
</span><span class="cx"> m_source->monitorSourceBuffers();
</span><span class="cx"> for (auto iter = m_trackBufferMap.begin(), end = m_trackBufferMap.end(); iter != end; ++iter)
</span><span class="cx"> provideMediaData(iter->value, iter->key);
</span><ins>+
+ reportExtraMemoryCost();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void SourceBuffer::removeCodedFrames(const MediaTime& start, const MediaTime& end)
</span><span class="lines">@@ -1424,6 +1437,23 @@
</span><span class="cx"> return unbufferedTime / m_averageBufferRate < timeRemaining;
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+void SourceBuffer::reportExtraMemoryCost()
+{
+ size_t extraMemoryCost = m_pendingAppendData.capacity();
+ for (auto& trackBuffer : m_trackBufferMap.values())
+ extraMemoryCost += trackBuffer.samples.sizeInBytes();
+
+ if (extraMemoryCost < m_reportedExtraMemoryCost)
+ return;
+
+ size_t extraMemoryCostDelta = extraMemoryCost - m_reportedExtraMemoryCost;
+ m_reportedExtraMemoryCost = extraMemoryCost;
+
+ JSC::JSLockHolder lock(scriptExecutionContext()->vm());
+ if (extraMemoryCostDelta > 0)
+ scriptExecutionContext()->vm().heap.reportExtraMemoryCost(extraMemoryCostDelta);
+}
+
</ins><span class="cx"> } // namespace WebCore
</span><span class="cx">
</span><span class="cx"> #endif
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreModulesmediasourceSourceBufferh"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.h (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.h 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/Modules/mediasource/SourceBuffer.h 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -156,6 +156,8 @@
</span><span class="cx"> void removeTimerFired(Timer<SourceBuffer>*);
</span><span class="cx"> void removeCodedFrames(const MediaTime& start, const MediaTime& end);
</span><span class="cx">
</span><ins>+ void reportExtraMemoryCost();
+
</ins><span class="cx"> Ref<SourceBufferPrivate> m_private;
</span><span class="cx"> MediaSource* m_source;
</span><span class="cx"> GenericEventQueue m_asyncEventQueue;
</span><span class="lines">@@ -188,6 +190,8 @@
</span><span class="cx"> double m_bufferedSinceLastMonitor;
</span><span class="cx"> double m_averageBufferRate;
</span><span class="cx">
</span><ins>+ size_t m_reportedExtraMemoryCost;
+
</ins><span class="cx"> MediaTime m_pendingRemoveStart;
</span><span class="cx"> MediaTime m_pendingRemoveEnd;
</span><span class="cx"> Timer<SourceBuffer> m_removeTimer;
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreplatformMediaSampleh"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/platform/MediaSample.h (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/platform/MediaSample.h 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/platform/MediaSample.h 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -55,6 +55,7 @@
</span><span class="cx"> virtual MediaTime decodeTime() const = 0;
</span><span class="cx"> virtual MediaTime duration() const = 0;
</span><span class="cx"> virtual AtomicString trackID() const = 0;
</span><ins>+ virtual size_t sizeInBytes() const = 0;
</ins><span class="cx">
</span><span class="cx"> enum SampleFlags {
</span><span class="cx"> None = 0,
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreplatformgraphicsavfoundationobjcSourceBufferPrivateAVFObjCmm"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -89,6 +89,7 @@
</span><span class="cx"> SOFT_LINK(CoreMedia, CMSampleBufferGetFormatDescription, CMFormatDescriptionRef, (CMSampleBufferRef sbuf), (sbuf))
</span><span class="cx"> SOFT_LINK(CoreMedia, CMSampleBufferGetPresentationTimeStamp, CMTime, (CMSampleBufferRef sbuf), (sbuf))
</span><span class="cx"> SOFT_LINK(CoreMedia, CMSampleBufferGetSampleAttachmentsArray, CFArrayRef, (CMSampleBufferRef sbuf, Boolean createIfNecessary), (sbuf, createIfNecessary))
</span><ins>+SOFT_LINK(CoreMedia, CMSampleBufferGetTotalSampleSize, size_t, (CMSampleBufferRef sbuf), (sbuf))
</ins><span class="cx"> SOFT_LINK(CoreMedia, CMFormatDescriptionGetMediaSubType, FourCharCode, (CMFormatDescriptionRef desc), (desc))
</span><span class="cx"> SOFT_LINK(CoreMedia, CMSetAttachment, void, (CMAttachmentBearerRef target, CFStringRef key, CFTypeRef value, CMAttachmentMode attachmentMode), (target, key, value, attachmentMode))
</span><span class="cx"> SOFT_LINK(CoreMedia, CMVideoFormatDescriptionGetPresentationDimensions, CGSize, (CMVideoFormatDescriptionRef videoDesc, Boolean usePixelAspectRatio, Boolean useCleanAperture), (videoDesc, usePixelAspectRatio, useCleanAperture))
</span><span class="lines">@@ -292,6 +293,7 @@
</span><span class="cx"> virtual MediaTime decodeTime() const override { return toMediaTime(CMSampleBufferGetDecodeTimeStamp(m_sample.get())); }
</span><span class="cx"> virtual MediaTime duration() const override { return toMediaTime(CMSampleBufferGetDuration(m_sample.get())); }
</span><span class="cx"> virtual AtomicString trackID() const override { return m_id; }
</span><ins>+ virtual size_t sizeInBytes() const override { return CMSampleBufferGetTotalSampleSize(m_sample.get()); }
</ins><span class="cx">
</span><span class="cx"> virtual SampleFlags flags() const override;
</span><span class="cx"> virtual PlatformSample platformSample() override;
</span></span></pre></div>
<a id="branchessafari53834branchSourceWebCoreplatformmockmediasourceMockSourceBufferPrivatecpp"></a>
<div class="modfile"><h4>Modified: branches/safari-538.34-branch/Source/WebCore/platform/mock/mediasource/MockSourceBufferPrivate.cpp (169209 => 169210)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-538.34-branch/Source/WebCore/platform/mock/mediasource/MockSourceBufferPrivate.cpp 2014-05-22 18:25:46 UTC (rev 169209)
+++ branches/safari-538.34-branch/Source/WebCore/platform/mock/mediasource/MockSourceBufferPrivate.cpp 2014-05-22 19:06:49 UTC (rev 169210)
</span><span class="lines">@@ -50,6 +50,7 @@
</span><span class="cx"> virtual MediaTime decodeTime() const override { return m_box.decodeTimestamp(); }
</span><span class="cx"> virtual MediaTime duration() const override { return m_box.duration(); }
</span><span class="cx"> virtual AtomicString trackID() const override { return m_id; }
</span><ins>+ virtual size_t sizeInBytes() const override { return sizeof(m_box); }
</ins><span class="cx">
</span><span class="cx"> virtual SampleFlags flags() const override;
</span><span class="cx"> virtual PlatformSample platformSample() override;
</span></span></pre>
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