ReferenceTable 溢出 (max=512) JNI [英] ReferenceTable overflow (max=512) JNI

问题描述

我对这个有点坚持......ReferenceTable 溢出(最大 = 512)，我确信它与在我的本地方法调用中创建的本地引用的数量有关......为了解决这个问题，我什至尝试从本地调用中删除本地引用；但我仍然无法解决问题......我正在传递一个二维数组；大约是 1024 X 1024 ...

I am a little stuck with this one... ReferenceTable overflow (max=512), I am sure it has to do with the Number of Local References getting created in my native method call... To work around the issue I have even tried to remove the local references from the native call; but still I am unable to solve the problem... I am passing a 2D Array; which is approaximately 1024 X 1024 ...

这是我所指的错误跟踪...我确信创建的整数对象的数量会导致我的情况出现问题...因为您应该能够看到 506(I) 对象已创建...然后JNI遇到了瓶颈...

Here is the error trace I am referring to ... I am sure that number of Integer Objects getting created is causing the issue for my case ... as you should be able to see 506(I) Objects are created... And then JNI hits the bottleneck...

/dalvikvm(9498): GC_CONCURRENT freed 1981K, 41% free 6891K/11527K, external 1625K/2137K, paused 2ms+3ms
/dalvikvm(9498): ReferenceTable overflow (max=512)
/dalvikvm(9498): Last 10 entries in JNI local reference table:
/dalvikvm(9498):   502: 0x40710920 cls=[I (4092 bytes)
/dalvikvm(9498):   503: 0x40711920 cls=[I (4092 bytes)
/dalvikvm(9498):   504: 0x40712920 cls=[I (4092 bytes)
/dalvikvm(9498):   505: 0x40713920 cls=[I (4092 bytes)
/dalvikvm(9498):   506: 0x40714920 cls=[I (4092 bytes)
/dalvikvm(9498):   507: 0x40715920 cls=[I (4092 bytes)
/dalvikvm(9498):   508: 0x40716920 cls=[I (4092 bytes)
/dalvikvm(9498):   509: 0x40717920 cls=[I (4092 bytes)
/dalvikvm(9498):   510: 0x40718920 cls=[I (4092 bytes)
/dalvikvm(9498):   511: 0x40719920 cls=[I (4092 bytes)
/dalvikvm(9498): JNI local reference table summary (512 entries):
/dalvikvm(9498):     1 of Ljava/lang/Class; 236B
/dalvikvm(9498):     1 of Ljava/lang/Class; 284B
/dalvikvm(9498):     1 of Ljava/lang/Class; 572B
/dalvikvm(9498):     2 of Ljava/lang/String; 28B (2 unique)
/dalvikvm(9498):   506 of [I 4092B (506 unique)
/dalvikvm(9498):     1 of [Ljava/lang/String; 28B
/dalvikvm(9498): Memory held directly by tracked refs is 2071728 bytes
/dalvikvm(9498): Failed adding to JNI local ref table (has 512 entries)
/dalvikvm(9498): "main" prio=5 tid=1 RUNNABLE
/dalvikvm(9498):   | group="main" sCount=0 dsCount=0 obj=0x4001f198 self=0xce60
/dalvikvm(9498):   | sysTid=9498 nice=0 sched=0/0 cgrp=default handle=-1345006528
/dalvikvm(9498):   | schedstat=( 6990020745 1042358411 1629 )
/dalvikvm(9498):   at pv.ndk.UcMobile.losInitialization(Native Method)
/dalvikvm(9498):   at pv.ndk.NdkActivity.onCreate(NdkActivity.java:69)
/dalvikvm(9498):   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
/dalvikvm(9498):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)

这是我正在使用的代码:请让我知道我做错了什么?

Here is the code I am using : Please let me know what is it that I am doing wrong ?

JNIEXPORT jboolean JNICALL Java_pv_ndk_UcMobile_losInitialization
  (JNIEnv * env, jobject jobj , jint height, jint width , jobjectArray elements){

   elevData = new unsigned int*[height];

for(i=0; i< height; i++) {
    elevData[i] = new unsigned int[width];

    jintArray oneDim=
    (jintArray)env->GetObjectArrayElement(
                         elements, i);
     jint *element=env->GetIntArrayElements(oneDim, 0);
     for(j=0; j< width; j++) {
         elevData[i][j]= element[j];
     }
     // This does not seem to be providing with the desired result
     // env->DeleteLocalRef(element);

     //I even tried with this approach
     env->ReleaseIntArrayElements(oneDim, element , 0);

  }

return losObject.Init(elevData,1,10,2,2);
}

推荐答案

你需要从 oneDim 对象中删除本地引用:env->DeleteLocalRef(oneDim);.

You need to delete local reference from oneDim object: env->DeleteLocalRef(oneDim);.

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