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Commit 7c1bcfdd authored by Shimeng (Simon) Wang's avatar Shimeng (Simon) Wang
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Set high usage delta to 1 to avoid constant V8 GC. 

This value will be passed to native webkit to V8.

3 consecutive dromaeo DOM core are run, there's no crash.
Because of assets change, Passion browser can't be run; this will
need to be checked in I release, I think

issue: 3317722
Change-Id: Ifa6e4116f76f395d98db9f8336f91dc9de6bf125
parent aaa55d3f

core/java/android/webkit/WebViewCore.java

+9 −5
Original line number Diff line number Diff line
@@ -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(