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java - 从 Assets 文件夹加载 ~200mb 文件时出现 OutOfMemoryError

转载 作者：太空狗 更新时间：2023-10-29 13:53:00 24 4
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当我运行应用程序并想要加载时，Android 无法分配足够的内存

java.lang.OutOfMemoryError: Failed to allocate a 202728962 byte allocation with 14422192 free bytes and 171MB until OOM

另外我之前在这里描述了一个错误:https://github.com/tensorflow/tensorflow/issues/9343

我想我有足够的可用内存(通常有 1.0-1.5 GB 可用):

enter image description here

那么它只是 java android 限制吗？我能以某种方式用java解决它吗？还是只有 NDK 才有可能？

完整错误代码:

04-21 09:40:52.731 31597-31597/org.tensorflow.demo E/AndroidRuntime: FATAL EXCEPTION: main
    Process: org.tensorflow.demo, PID: 31597
    java.lang.OutOfMemoryError: Failed to allocate a 202728962 byte allocation with 14422192 free bytes and 171MB until OOM
        at org.tensorflow.contrib.android.TensorFlowInferenceInterface.loadGraph(TensorFlowInferenceInterface.java:377)
        at org.tensorflow.contrib.android.TensorFlowInferenceInterface.<init>(TensorFlowInferenceInterface.java:96)
        at org.tensorflow.demo.TensorFlowYoloDetector.create(TensorFlowYoloDetector.java:111)
        at org.tensorflow.demo.DetectorActivity.onPreviewSizeChosen(DetectorActivity.java:131)
        at org.tensorflow.demo.CameraActivity$1.onPreviewSizeChosen(CameraActivity.java:159)
        at org.tensorflow.demo.CameraConnectionFragment.setUpCameraOutputs(CameraConnectionFragment.java:421)
        at org.tensorflow.demo.CameraConnectionFragment.openCamera(CameraConnectionFragment.java:428)
        at org.tensorflow.demo.CameraConnectionFragment.access$000(CameraConnectionFragment.java:64)
        at org.tensorflow.demo.CameraConnectionFragment$1.onSurfaceTextureAvailable(CameraConnectionFragment.java:95)
        at android.view.TextureView.getHardwareLayer(TextureView.java:368)
        at android.view.View.updateDisplayListIfDirty(View.java:15175)
        at android.view.View.draw(View.java:15971)
        at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
        at android.view.View.updateDisplayListIfDirty(View.java:15193)
        at android.view.View.draw(View.java:15971)
        at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
        at android.view.View.draw(View.java:16204)
        at android.view.View.updateDisplayListIfDirty(View.java:15198)
        at android.view.View.draw(View.java:15971)
        at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
        at android.view.View.updateDisplayListIfDirty(View.java:15193)
        at android.view.View.draw(View.java:15971)
        at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
        at android.view.View.updateDisplayListIfDirty(View.java:15193)
        at android.view.View.draw(View.java:15971)
        at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
        at android.view.View.draw(View.java:16204)
        at com.android.internal.policy.PhoneWindow$DecorView.draw(PhoneWindow.java:2690)
        at android.view.View.updateDisplayListIfDirty(View.java:15198)
        at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:282)
        at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:288)
        at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:323)
        at android.view.ViewRootImpl.draw(ViewRootImpl.java:2642)
        at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2461)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2094)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1134)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6045)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:860)
        at android.view.Choreographer.doCallbacks(Choreographer.java:672)
        at android.view.Choreographer.doFrame(Choreographer.java:608)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:846)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5441)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)
04-21 09:40:52.740 1501-2367/? E/ActivityManager: Invalid thumbnail dimensions: 0x0
TensorFlowInferenceInterface 类的

loadGraph 方法:

private void loadGraph(InputStream var1, Graph var2) throws IOException {
        long var3 = System.currentTimeMillis();
        Trace.beginSection("initializeTensorFlow");
        Trace.beginSection("readGraphDef");
        byte[] var5 = new byte[var1.available()];
        int var6 = var1.read(var5);
        if(var6 != var5.length) {
            throw new IOException("read error: read only " + var6 + " of the graph, expected to read " + var5.length);
        } else {
            Trace.endSection();
            Trace.beginSection("importGraphDef");

            try {
                var2.importGraphDef(var5);
            } catch (IllegalArgumentException var9) {
                throw new IOException("Not a valid TensorFlow Graph serialization: " + var9.getMessage());
            }

            Trace.endSection();
            Trace.endSection();
            long var7 = System.currentTimeMillis();
            Log.i("TensorFlowInferenceInterface", "Model load took " + (var7 - var3) + "ms, TensorFlow version: " + TensorFlow.version());
        }
    }

附注演示应用链接:github.com/tensorflow/tensorflow/tree/master/tensorflow/examples/android

我还被提议尝试使用本地代码路径来加载文件:graphsgithub.com/tensorflow/tensorflow/issues/9343#issuecomment-295959477但我对 C++/NDK 不是很好(我只是不使用它)所以有 .cc 文件可用于加载文件。如果有人帮助我将它集成到 TensorFlow 示例 Android 项目中，我将不胜感激。但我仍然希望有没有 NDK 的解决方案，因为 200mb 对于 Android 2016-2017 设备来说真的这么大吗？

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