如何利用ndk-stack工具查看so库的调用堆栈【代码示例】？

如何利用ndk-stack工具查看so库的调用堆栈【代码示例】？

 http://hi.baidu.com/subo4110/item/d00395b3bf63e4432bebe36d

 

Step1：Android应用主文件：CPPTestActivity.java

package  com.subo4110.cpptest;


import  android.os.Bundle;
import  android.app.Activity;
import  android.util.Log;
import  android.view.Menu;

public  class  CPPTestActivity  extends  Activity {

    private  static  final  String TAG =  "CPPTestActivity" ;


    @Override
    protected  void  onCreate(Bundle savedInstanceState) {
        super .onCreate(savedInstanceState);
        setContentView(R.layout.activity_cpptest);

        Log.w(TAG,  "load native so file, add return: "  + UtilsJNILib.add( 193.1245 ,  577.90 ));
        Log.w(TAG,  "load native so file, pow return: "  + UtilsJNILib.pow( 2 ,  13 ));
        Log.w(TAG,  "load native so file, pow return: "  + UtilsJNILib.div( 21.456 ,  0 ));

    }

    @Override
    public  boolean  onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.cpptest, menu);
        return  true ;
    }

}

 

 

 

 

Step2：定义native接口的java类：UtilsJNILib.java

package  com.subo4110.cpptest;

public  class  UtilsJNILib {

    static  {

        System.loadLibrary( "UtilsJNILib" );

    }

    public  static  native  double  add( double  a,  double  b);
    public  static  native  double  pow( double  a,  double  b);
    public  static  native  double  div( double  a,  double  b);

}

 

 

 

 

Step3：调用JNI命令并实现JNI接口的C++类：UtilsJNILib.cpp，具体的JNI命令为：javah -jni com.subo4110.cpptest.UtilsJNILib

#include <jni.h>
#include <android/log.h>

#include <math.h>

#define  LOG_TAG    "UtilsJNILib"
#define  LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
#define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)


extern  "C"  {

    jint JNI_OnLoad(JavaVM *vm,  void  *reserved)
    {
        LOGI( "JNI_OnLoad" );

        return  JNI_VERSION_1_4;
    }


    /*
     * Class:     com_subo4110_cpptest_UtilsJNILib
     * Method:    nativeAdd
     * Signature: (DD)D
     */
    JNIEXPORT jdouble JNICALL Java_com_subo4110_cpptest_UtilsJNILib_add
        (JNIEnv *env, jclass obj, jdouble a, jdouble b)
    {
        return  (a+b);
    }


    /*
     * Class:     com_subo4110_cpptest_UtilsJNILib
     * Method:    pow
     * Signature: (DD)D
     */
    JNIEXPORT jdouble JNICALL Java_com_subo4110_cpptest_UtilsJNILib_pow
      (JNIEnv *env, jclass obj, jdouble a, jdouble b)
    {
        return  pow (a, b);
    }


    /*
     * Class:     com_subo4110_cpptest_UtilsJNILib
     * Method:    div
     * Signature: (DD)D
     */
    JNIEXPORT jdouble JNICALL Java_com_subo4110_cpptest_UtilsJNILib_div
      (JNIEnv *env, jclass obj, jdouble a, jdouble b)
    {
        char * buf = 0;
        buf[1] =  'a' ; //此处将报错，Fatal Signal 11。。。
        return  a/b;
    }

};

 

 

 

 

Step4：用来ndk-build的make文件：Android.mk

LOCAL_PATH := $(call my- dir )

include $(CLEAR_VARS)

LOCAL_LDLIBS := -llog

LOCAL_MODULE := UtilsJNILib

LOCAL_SRC_FILES := UtilsJNILib.cpp

include $(BUILD_SHARED_LIBRARY)

 

 

 

 

Step5：运行后，将在Eclipse的logcat窗口看到如下log信息：

05-08 16:45:56.800: E/Trace(12735): error opening trace file: No such file or directory (2)
05-08 16:45:56.800: D/ActivityThread(12735): setTargetHeapUtilization:0.25
05-08 16:45:56.800: D/ActivityThread(12735): setTargetHeapIdealFree:8388608
05-08 16:45:56.800: D/ActivityThread(12735): setTargetHeapConcurrentStart:2097152
05-08 16:45:57.000: W/ResourceType(12735): No package identifier when getting value for resource number 0x00000000
05-08 16:45:57.000: W/PackageManager(12735): Failure retrieving resources forcom.subo4110.cpptest: Resource ID #0x0
05-08 16:45:57.030: D/IconCustomizer(12735): Generate customized icon for com.subo4110.cpptest.png
05-08 16:45:57.030: W/IconCustomizer(12735): can't load transform_config.xml
05-08 16:45:57.100: I/themeservice(12735): add pending job /data/data/com.subo4110.cpptest/cache/com.subo4110.cpptest.png
05-08 16:45:57.120: I/themeservice(12735): binding service
05-08 16:45:57.130: I/UtilsJNILib(12735): JNI_OnLoad
05-08 16:45:57.130: W/CPPTestActivity(12735): load native so file, add return: 771.0245
05-08 16:45:57.130: W/CPPTestActivity(12735): load native so file, pow return: 8192.0
05-08 16:45:57.130: A/libc(12735): Fatal signal 11 (SIGSEGV) at 0x00000001 (code=1), thread 12735 (ubo4110.cpptest)

 

 

 

 

Step6：在cmd中输入命令：adb logcat | ndk-stack -sym D:\workspace\Android\MyOwnSamples\JNICPPTest\obj\local\armeabi

C:\Users\yongle.liu>adb logcat | ndk-stack -sym D:\workspace\Android\MyOwnSamples\JNICPPTest\obj\ local \armeabi
********** Crash dump: **********
Build fingerprint:  'unknown'
pid: 4079, tid: 4095  >>> com.mobinex.service:TeliDHService <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 03f9b848
Stack frame  #00  pc 00019012  /system/lib/libutils.so (_ZNK7android7RefBase9decStrongEPKv)
Stack frame  #01  pc 00010930  /system/lib/libcamera_client.so (_ZN7android2spINS_7ICameraEED1Ev)
Stack frame  #02  pc 00010d82  /system/lib/libcamera_client.so (_ZN7android6CameraD1Ev)
Stack frame  #03  pc 00010de8  /system/lib/libcamera_client.so (_ZN7android6CameraD0Ev)
Stack frame  #04  pc 000118f2  /system/lib/libcamera_client.so (_ZTv0_n12_N7android6CameraD0Ev)
Stack frame  #05  pc 00019038  /system/lib/libutils.so (_ZNK7android7RefBase9decStrongEPKv)
Stack frame  #06  pc 00017398  /system/lib/libbinder.so (_ZN7android14IPCThreadState14joinThreadPoolEb)
Stack frame  #07  pc 0001c668  /system/lib/libbinder.so
Stack frame  #08  pc 00020156  /system/lib/libutils.so (_ZN7android6Thread11_threadLoopEPv)
Stack frame  #09  pc 00096260  /system/lib/libandroid_runtime.so (_ZN7android14AndroidRuntime15javaThreadShellEPv)
Stack frame  #10  pc 0002079c  /system/lib/libutils.so
Stack frame  #11  pc 00012134  /system/lib/libc.so (__thread_entry)
Stack frame  #12  pc 00011c88  /system/lib/libc.so (pthread_create)
Crash dump is completed

********** Crash dump: **********
Build fingerprint:  'unknown'
pid: 4201, tid: 4201  >>> com.subo4110.cpptest <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000001
Stack frame  #00  pc 00000fee  /data/data/com.subo4110.cpptest/lib/libUtilsJNILib.so (Java_com_subo4110_cpptest_UtilsJNILib_div): Routine Java_com_subo4110_cpptest_UtilsJNILib_div in jni/UtilsJNILib.cp
p:54
Stack frame  #01  pc 00018c30  /system/lib/libdvm.so (dvmPlatformInvoke)
Stack frame  #02  pc 00053146  /system/lib/libdvm.so (_Z16dvmCallJNIMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #03  pc 00046c44  /system/lib/libdvm.so (_Z21dvmCheckCallJNIMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #04  pc 00054e74  /system/lib/libdvm.so (_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #05  pc 0002aa4c  /system/lib/libdvm.so
Stack frame  #06  pc 0002e1fc  /system/lib/libdvm.so (_Z12dvmInterpretP6ThreadPK6MethodP6JValue)
Stack frame  #07  pc 00066832  /system/lib/libdvm.so (_Z15dvmInvokeMethodP6ObjectPK6MethodP11ArrayObjectS5_P11ClassObjectb)
Stack frame  #08  pc 0006dc62  /system/lib/libdvm.so
Stack frame  #09  pc 00054e74  /system/lib/libdvm.so (_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #10  pc 0002aa4c  /system/lib/libdvm.so
Stack frame  #11  pc 0002e1fc  /system/lib/libdvm.so (_Z12dvmInterpretP6ThreadPK6MethodP6JValue)
Stack frame  #12  pc 00066b02  /system/lib/libdvm.so (_Z14dvmCallMethodVP6ThreadPK6MethodP6ObjectbP6JValueSt9__va_list)
Stack frame  #13  pc 0004f19a  /system/lib/libdvm.so
Stack frame  #14  pc 00043b20  /system/lib/libdvm.so
Stack frame  #15  pc 000962fe  /system/lib/libandroid_runtime.so
Stack frame  #16  pc 00096e66  /system/lib/libandroid_runtime.so (_ZN7android14AndroidRuntime5startEPKcS2_)
Stack frame  #17  pc 00008f0e  /system/bin/app_process
Stack frame  #18  pc 00015a34  /system/lib/libc.so (__libc_init)
Crash dump is completed

********** Crash dump: **********
Build fingerprint:  'unknown'
pid: 4309, tid: 4309  >>> com.subo4110.cpptest <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000001
Stack frame  #00  pc 00000fee  /data/data/com.subo4110.cpptest/lib/libUtilsJNILib.so (Java_com_subo4110_cpptest_UtilsJNILib_div): Routine Java_com_subo4110_cpptest_UtilsJNILib_div in jni/UtilsJNILib.cp
p:54
Stack frame  #01  pc 00018c30  /system/lib/libdvm.so (dvmPlatformInvoke)
Stack frame  #02  pc 00053146  /system/lib/libdvm.so (_Z16dvmCallJNIMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #03  pc 00046c44  /system/lib/libdvm.so (_Z21dvmCheckCallJNIMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #04  pc 00054e74  /system/lib/libdvm.so (_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #05  pc 0002aa4c  /system/lib/libdvm.so
Stack frame  #06  pc 0002e1fc  /system/lib/libdvm.so (_Z12dvmInterpretP6ThreadPK6MethodP6JValue)
Stack frame  #07  pc 00066832  /system/lib/libdvm.so (_Z15dvmInvokeMethodP6ObjectPK6MethodP11ArrayObjectS5_P11ClassObjectb)
Stack frame  #08  pc 0006dc62  /system/lib/libdvm.so
Stack frame  #09  pc 00054e74  /system/lib/libdvm.so (_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)
Stack frame  #10  pc 0002aa4c  /system/lib/libdvm.so
Stack frame  #11  pc 0002e1fc  /system/lib/libdvm.so (_Z12dvmInterpretP6ThreadPK6MethodP6JValue)
Stack frame  #12  pc 00066b02  /system/lib/libdvm.so (_Z14dvmCallMethodVP6ThreadPK6MethodP6ObjectbP6JValueSt9__va_list)
Stack frame  #13  pc 0004f19a  /system/lib/libdvm.so
Stack frame  #14  pc 00043b20  /system/lib/libdvm.so
Stack frame  #15  pc 000962fe  /system/lib/libandroid_runtime.so
Stack frame  #16  pc 00096e66  /system/lib/libandroid_runtime.so (_ZN7android14AndroidRuntime5startEPKcS2_)
Stack frame  #17  pc 00008f0e  /system/bin/app_process
Stack frame  #18  pc 00015a34  /system/lib/libc.so (__libc_init)

C:\Users\yongle.liu>

 

 

 

Step7：堆栈中最后2个里面，可以找到signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000001，而这个地址与Eclipse的logcat的log信息中的错误地址一样。那么你就可以开始找错误啦！

 

 

参考资料：http://www.cocos2d-x.org/boards/6/topics/13392?r=13472

 

 

但是，我还没有找到如何查看多个so库有链接关系的情况，如何利用ndk-stack查看堆栈？望高手指点！