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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/196712">196712</a></dd>
<dt>Author</dt> <dd>akling@apple.com</dd>
<dt>Date</dt> <dd>2016-02-17 12:27:56 -0800 (Wed, 17 Feb 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>[iOS] Purge GraphicsServices font cache on memory warning.
<https://webkit.org/b/154343>
Reviewed by Antti Koivisto.
The GS font cache was holding on to the last retain on CSS fonts after they stop being used.
Call SPI to purge it on memory pressure.
* platform/cocoa/MemoryPressureHandlerCocoa.mm:
(WebCore::MemoryPressureHandler::platformReleaseMemory):
* platform/spi/ios/GraphicsServicesSPI.h:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformcocoaMemoryPressureHandlerCocoamm">trunk/Source/WebCore/platform/cocoa/MemoryPressureHandlerCocoa.mm</a></li>
<li><a href="#trunkSourceWebCoreplatformspiiosGraphicsServicesSPIh">trunk/Source/WebCore/platform/spi/ios/GraphicsServicesSPI.h</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (196711 => 196712)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2016-02-17 20:22:23 UTC (rev 196711)
+++ trunk/Source/WebCore/ChangeLog 2016-02-17 20:27:56 UTC (rev 196712)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2016-02-17 Andreas Kling <akling@apple.com>
+
+ [iOS] Purge GraphicsServices font cache on memory warning.
+ <https://webkit.org/b/154343>
+
+ Reviewed by Antti Koivisto.
+
+ The GS font cache was holding on to the last retain on CSS fonts after they stop being used.
+ Call SPI to purge it on memory pressure.
+
+ * platform/cocoa/MemoryPressureHandlerCocoa.mm:
+ (WebCore::MemoryPressureHandler::platformReleaseMemory):
+ * platform/spi/ios/GraphicsServicesSPI.h:
+
</ins><span class="cx"> 2016-02-17 Chris Dumez <cdumez@apple.com>
</span><span class="cx">
</span><span class="cx"> Regression(r196648): window.showModalDialog is no longer undefined if the client does not allow showing modal dialog
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformcocoaMemoryPressureHandlerCocoamm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/cocoa/MemoryPressureHandlerCocoa.mm (196711 => 196712)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/cocoa/MemoryPressureHandlerCocoa.mm 2016-02-17 20:22:23 UTC (rev 196711)
+++ trunk/Source/WebCore/platform/cocoa/MemoryPressureHandlerCocoa.mm 2016-02-17 20:27:56 UTC (rev 196712)
</span><span class="lines">@@ -40,6 +40,7 @@
</span><span class="cx"> #import <wtf/CurrentTime.h>
</span><span class="cx">
</span><span class="cx"> #if PLATFORM(IOS)
</span><ins>+#import "GraphicsServicesSPI.h"
</ins><span class="cx"> #import "SystemMemory.h"
</span><span class="cx"> #import "WebCoreThread.h"
</span><span class="cx"> #endif
</span><span class="lines">@@ -68,6 +69,13 @@
</span><span class="cx"> }
</span><span class="cx"> #endif
</span><span class="cx">
</span><ins>+#if PLATFORM(IOS)
+ {
+ ReliefLogger log("Purging GraphicsServices font cache");
+ GSFontPurgeFontCache();
+ }
+#endif
+
</ins><span class="cx"> if (critical == Critical::Yes && !isUnderMemoryPressure()) {
</span><span class="cx"> // libcache listens to OS memory notifications, but for process suspension
</span><span class="cx"> // or memory pressure simulation, we need to prod it manually:
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformspiiosGraphicsServicesSPIh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/spi/ios/GraphicsServicesSPI.h (196711 => 196712)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/spi/ios/GraphicsServicesSPI.h 2016-02-17 20:22:23 UTC (rev 196711)
+++ trunk/Source/WebCore/platform/spi/ios/GraphicsServicesSPI.h 2016-02-17 20:27:56 UTC (rev 196712)
</span><span class="lines">@@ -41,6 +41,7 @@
</span><span class="cx"> void GSInitialize(void);
</span><span class="cx"> uint64_t GSCurrentEventTimestamp(void);
</span><span class="cx"> CFStringRef GSSystemRootDirectory(void);
</span><ins>+void GSFontPurgeFontCache(void);
</ins><span class="cx">
</span><span class="cx"> WTF_EXTERN_C_END
</span><span class="cx">
</span></span></pre>
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