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am c1e7f2d3: Merge "Set high usage delta to 1 to avoid constant V8 GC." into honeycomb

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* commit 'c1e7f2d371aa6c2aa9ed3207689cb53a1f704cbc':
  Set high usage delta to 1 to avoid constant V8 GC.
This commit is contained in:
Shimeng (Simon) Wang
2011-01-25 10:30:33 -08:00
committed by Android Git Automerger
parent 0d1289122c c1e7f2d371
commit 1dc6b9ebc6
1 changed files with 9 additions and 5 deletions
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14
core/java/android/webkit/WebViewCore.java
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@@ -130,6 +130,7 @@ final class WebViewCore {
private int mLowMemoryUsageThresholdMb;
private int mHighMemoryUsageThresholdMb;
private int mHighUsageDeltaMb;
// The thread name used to identify the WebCore thread and for use in
// debugging other classes that require operation within the WebCore thread.
@@ -186,12 +187,15 @@ final class WebViewCore {
// Allow us to use up to our memory class value before V8's GC kicks in.
// These values have been determined by experimentation.
mLowMemoryUsageThresholdMb = manager.getMemoryClass();
mLowMemoryUsageThresholdMb = manager.getLargeMemoryClass();
// If things get crazy, allow V8 to use up to 3 times our memory class, or a third of the
// device's total available memory, whichever is smaller. At that point V8 will start
// attempting more aggressive garbage collection.
mHighMemoryUsageThresholdMb = Math.min(mLowMemoryUsageThresholdMb * 3,
(int) (memInfo.availMem / 3) >> 20);
// device's total available memory, whichever is smaller. This value must be no less
// than the low memory threshold.
// At that point V8 will start attempting more aggressive garbage collection.
mHighMemoryUsageThresholdMb = Math.max(Math.min(mLowMemoryUsageThresholdMb * 3,
(int) (memInfo.availMem / 3) >> 20), mLowMemoryUsageThresholdMb);
// Avoid constant V8 GC when memory usage equals to working set estimate.
mHighUsageDeltaMb = 1;
// Send a message to initialize the WebViewCore.
Message init = sWebCoreHandler.obtainMessage(