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安卓：在进行XZ压缩时出现dlavikvm-heap内存分配不足错误

androidcompressionout-of-memoryxzapache-commons-compress
3
我正在尝试在API 2.3.3上将tar压缩为tar.xz。
不管我怎么做，都会出现以下错误：
06-09 20:56:32.230: V/CameraDemo(23418): filesPath -- > /mnt/sdcard/myimages
06-09 20:56:32.336: D/dalvikvm(23418): GC_FOR_ALLOC freed 75K, 2% free 9193K/9347K, paused 14ms
06-09 20:56:32.363: I/dalvikvm-heap(23418): Grow heap (frag case) to 21.304MB for 12853537-byte allocation
06-09 20:56:32.390: D/dalvikvm(23418): GC_CONCURRENT freed 1K, 1% free 21744K/21959K, paused 1ms+2ms
06-09 20:56:32.410: D/dalvikvm(23418): GC_FOR_ALLOC freed 1K, 2% free 22005K/22279K, paused 17ms
06-09 20:56:32.476: I/dalvikvm-heap(23418): Grow heap (frag case) to 37.558MB for 16777232-byte allocation
06-09 20:56:32.480: W/dalvikvm(23418): 67108888 byte allocation exceeds the 50331648 byte maximum heap size
06-09 20:56:32.480: I/dalvikvm-heap(23418): Forcing collection of SoftReferences for 67108888-byte allocation
06-09 20:56:32.508: D/dalvikvm(23418): GC_BEFORE_OOM freed 9K, 1% free 38380K/38727K, paused 25ms
06-09 20:56:32.508: E/dalvikvm-heap(23418): Out of memory on a 67108888-byte allocation.
06-09 20:56:32.508: I/dalvikvm(23418): "main" prio=5 tid=1 RUNNABLE
06-09 20:56:32.508: I/dalvikvm(23418):   | group="main" sCount=0 dsCount=0 obj=0x40a53460 self=0xa14828
06-09 20:56:32.508: I/dalvikvm(23418):   | sysTid=23418 nice=0 sched=0/0 cgrp=default handle=1074758792
06-09 20:56:32.508: I/dalvikvm(23418):   | schedstat=( 0 0 0 ) utm=17 stm=8 core=0
06-09 20:56:32.508: I/dalvikvm(23418):   at org.tukaani.xz.lz.BT4.<init>((null):~-1)
06-09 20:56:32.508: I/dalvikvm(23418):   at org.tukaani.xz.lz.LZEncoder.getInstance((null):-1)
06-09 20:56:32.508: I/dalvikvm(23418):   at org.tukaani.xz.lzma.LZMAEncoderNormal.<init>((null):-1)
06-09 20:56:32.511: I/dalvikvm(23418):   at org.tukaani.xz.lzma.LZMAEncoder.getInstance((null):-1)
06-09 20:56:32.511: I/dalvikvm(23418):   at org.tukaani.xz.LZMA2OutputStream.<init>((null):-1)
06-09 20:56:32.511: I/dalvikvm(23418):   at org.tukaani.xz.LZMA2Options.getOutputStream((null):-1)
06-09 20:56:32.511: I/dalvikvm(23418):   at org.tukaani.xz.LZMA2Encoder.getOutputStream((null):-1)
06-09 20:56:32.511: I/dalvikvm(23418):   at org.tukaani.xz.BlockOutputStream.<init>((null):-1)
06-09 20:56:32.511: I/dalvikvm(23418):   at org.tukaani.xz.XZOutputStream.write((null):-1)
06-09 20:56:32.511: I/dalvikvm(23418):   at org.apache.commons.compress.compressors.xz.XZCompressorOutputStream.write(XZCompressorOutputStream.java:71)
06-09 20:56:32.511: I/dalvikvm(23418):   at utilities.CompressTar.compXZ(CompressTar.java:127)
06-09 20:56:32.511: I/dalvikvm(23418):   at utilities.CompressTar.<init>(CompressTar.java:52)
06-09 20:56:32.511: I/dalvikvm(23418):   at com.jadeye.CameraActivity$4.onClick(CameraActivity.java:101)
06-09 20:56:32.519: I/dalvikvm(23418):   at android.view.View.performClick(View.java:3511)
06-09 20:56:32.523: I/dalvikvm(23418):   at android.view.View$PerformClick.run(View.java:14105)
06-09 20:56:32.523: I/dalvikvm(23418):   at android.os.Handler.handleCallback(Handler.java:605)
06-09 20:56:32.523: I/dalvikvm(23418):   at android.os.Handler.dispatchMessage(Handler.java:92)
06-09 20:56:32.523: I/dalvikvm(23418):   at android.os.Looper.loop(Looper.java:137)
06-09 20:56:32.523: I/dalvikvm(23418):   at android.app.ActivityThread.main(ActivityThread.java:4424)
06-09 20:56:32.523: I/dalvikvm(23418):   at java.lang.reflect.Method.invokeNative(Native Method)
06-09 20:56:32.523: I/dalvikvm(23418):   at java.lang.reflect.Method.invoke(Method.java:511)
06-09 20:56:32.523: I/dalvikvm(23418):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-09 20:56:32.523: I/dalvikvm(23418):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-09 20:56:32.523: I/dalvikvm(23418):   at dalvik.system.NativeStart.main(Native Method)
06-09 20:56:32.527: D/AndroidRuntime(23418): Shutting down VM
06-09 20:56:32.527: W/dalvikvm(23418): threadid=1: thread exiting with uncaught exception (group=0x40a521f8)
06-09 20:56:32.539: E/AndroidRuntime(23418): FATAL EXCEPTION: main
06-09 20:56:32.539: E/AndroidRuntime(23418): java.lang.OutOfMemoryError
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.lz.BT4.<init>(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.lz.LZEncoder.getInstance(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.lzma.LZMAEncoderNormal.<init>(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.lzma.LZMAEncoder.getInstance(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.LZMA2OutputStream.<init>(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.LZMA2Options.getOutputStream(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.LZMA2Encoder.getOutputStream(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.BlockOutputStream.<init>(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.tukaani.xz.XZOutputStream.write(Unknown Source)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at org.apache.commons.compress.compressors.xz.XZCompressorOutputStream.write(XZCompressorOutputStream.java:71)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at utilities.CompressTar.compXZ(CompressTar.java:127)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at utilities.CompressTar.<init>(CompressTar.java:52)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at com.jadeye.CameraActivity$4.onClick(CameraActivity.java:101)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at android.view.View.performClick(View.java:3511)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at android.view.View$PerformClick.run(View.java:14105)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at android.os.Handler.handleCallback(Handler.java:605)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at android.os.Handler.dispatchMessage(Handler.java:92)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at android.os.Looper.loop(Looper.java:137)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at android.app.ActivityThread.main(ActivityThread.java:4424)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at java.lang.reflect.Method.invokeNative(Native Method)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at java.lang.reflect.Method.invoke(Method.java:511)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-09 20:56:32.539: E/AndroidRuntime(23418):    at dalvik.system.NativeStart.main(Native Method)

这里是导致此问题的代码：

    public void compXZ (String saveAs, String infile) throws IOException {

    FileInputStream fin = new FileInputStream(infile);
    BufferedInputStream in = new BufferedInputStream(fin);
    FileOutputStream out = new FileOutputStream(saveAs);
    XZCompressorOutputStream xzOut = new XZCompressorOutputStream(out);
    final byte[] buffer = new byte[BUFFER];
    int n = 0;
    while (-1 != (n = in.read(buffer))) {
        xzOut.write(buffer, 0, n);
    }

    xzOut.finish();
    xzOut.close();
    fin.close();
}

我制作了几个不同版本，但是它们都会出现相同的错误。 我的应用程序中确实有一个图像库在加载，但已经尝试过不加载图库进行压缩并且还是出现了相同的问题。

有谁知道问题出在哪里？ 解决方案是什么？ 或者可能是压缩tar到tar.xz的代码？

感谢您的帮助。

Jadeye。

私有的静态常量 BUFFER = 8192; - Jadeye
1个回答
1

您使用的XZ压缩算法尝试分配67 MB的内存。对于大多数移动设备而言，这太多了。

我对XZ压缩算法和XZ utils实现不是很了解，但似乎该压缩算法需要大量内存，并不适合在今天的移动设备上使用。

1
是的，我明白你在说什么...:-( 你知道有哪些高压缩库吗？谢谢。顺便说一下，这是一个apache-commons-compress-1.4.1。 - Jadeye
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