摘要：
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/d00395b3bf63e4432bebe36dStep1：Android应用主文件：CPPTestActivity.java1234567891011121314151617181920212223242526272829303132packagecom.subo4
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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | packagecom.subo4110.cpptest;importandroid.os.Bundle;importandroid.app.Activity;importandroid.util.Log;importandroid.view.Menu;publicclassCPPTestActivityextendsActivity{privatestaticfinalStringTAG="CPPTestActivity";@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_cpptest);Log.w(TAG,"loadnativesofile,addreturn:"+UtilsJNILib.add(193.1245,577.90));Log.w(TAG,"loadnativesofile,powreturn:"+UtilsJNILib.pow(2,13));Log.w(TAG,"loadnativesofile,powreturn:"+UtilsJNILib.div(21.456,0));}@OverridepublicbooleanonCreateOptionsMenu(Menumenu){//Inflatethemenu;thisaddsitemstotheactionbarifitispresent.getMenuInflater().inflate(R.menu.cpptest,menu);returntrue;}} |
Step2：定义native接口的java类：UtilsJNILib.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | packagecom.subo4110.cpptest;publicclassUtilsJNILib{static{System.loadLibrary("UtilsJNILib");}publicstaticnativedoubleadd(doublea,doubleb);publicstaticnativedoublepow(doublea,doubleb);publicstaticnativedoublediv(doublea,doubleb);} |
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-jnicom.subo4110.cpptest.UtilsJNILib
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | #include<jni.h>#include<android/log.h>#include<math.h>#defineLOG_TAG"UtilsJNILib"#defineLOGI(...)__android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)#defineLOGE(...)__android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)extern"C"{jintJNI_OnLoad(JavaVM*vm,void*reserved){LOGI("JNI_OnLoad");returnJNI_VERSION_1_4;}/**Class:com_subo4110_cpptest_UtilsJNILib*Method:nativeAdd*Signature:(DD)D*/JNIEXPORTjdoubleJNICALLJava_com_subo4110_cpptest_UtilsJNILib_add(JNIEnv*env,jclassobj,jdoublea,jdoubleb){return(a+b);}/**Class:com_subo4110_cpptest_UtilsJNILib*Method:pow*Signature:(DD)D*/JNIEXPORTjdoubleJNICALLJava_com_subo4110_cpptest_UtilsJNILib_pow(JNIEnv*env,jclassobj,jdoublea,jdoubleb){returnpow(a,b);}/**Class:com_subo4110_cpptest_UtilsJNILib*Method:div*Signature:(DD)D*/JNIEXPORTjdoubleJNICALLJava_com_subo4110_cpptest_UtilsJNILib_div(JNIEnv*env,jclassobj,jdoublea,jdoubleb){char*buf=0;buf[1]='a';//此处将报错，FatalSignal11。。。returna/b;}}; |
Step4：用来ndk-build的make文件：Android.mk
1 2 3 4 5 6 7 8 9 10 11 | LOCAL_PATH:=$(callmy-dir)include$(CLEAR_VARS)LOCAL_LDLIBS:=-llogLOCAL_MODULE:=UtilsJNILibLOCAL_SRC_FILES:=UtilsJNILib.cppinclude$(BUILD_SHARED_LIBRARY) |
Step5：运行后，将在Eclipse的logcat窗口看到如下log信息：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | 05-0816:45:56.800:E/Trace(12735):erroropeningtracefile:Nosuchfileordirectory(2)05-0816:45:56.800:D/ActivityThread(12735):setTargetHeapUtilization:0.2505-0816:45:56.800:D/ActivityThread(12735):setTargetHeapIdealFree:838860805-0816:45:56.800:D/ActivityThread(12735):setTargetHeapConcurrentStart:209715205-0816:45:57.000:W/ResourceType(12735):Nopackageidentifierwhengettingvalueforresourcenumber0x0000000005-0816:45:57.000:W/PackageManager(12735):Failureretrievingresourcesforcom.subo4110.cpptest:ResourceID#0x005-0816:45:57.030:D/IconCustomizer(12735):Generatecustomizediconforcom.subo4110.cpptest.png05-0816:45:57.030:W/IconCustomizer(12735):can'tloadtransform_config.xml05-0816:45:57.100:I/themeservice(12735):addpendingjob/data/data/com.subo4110.cpptest/cache/com.subo4110.cpptest.png05-0816:45:57.120:I/themeservice(12735):bindingservice05-0816:45:57.130:I/UtilsJNILib(12735):JNI_OnLoad05-0816:45:57.130:W/CPPTestActivity(12735):loadnativesofile,addreturn:771.024505-0816:45:57.130:W/CPPTestActivity(12735):loadnativesofile,powreturn:8192.005-0816:45:57.130:A/libc(12735):Fatalsignal11(SIGSEGV)at0x00000001(code=1),thread12735(ubo4110.cpptest) |
Step6：在cmd中输入命令：adblogcat|ndk-stack-symD:workspaceAndroidMyOwnSamplesJNICPPTestobjlocalarmeabi
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | C:Usersyongle.liu>adblogcat|ndk-stack-symD:workspaceAndroidMyOwnSamplesJNICPPTestobjlocalarmeabi**********Crashdump:**********Buildfingerprint:'unknown'pid:4079,tid:4095>>>com.mobinex.service:TeliDHService<<<signal11(SIGSEGV),code1(SEGV_MAPERR),faultaddr03f9b848Stackframe#00pc00019012/system/lib/libutils.so(_ZNK7android7RefBase9decStrongEPKv)Stackframe#01pc00010930/system/lib/libcamera_client.so(_ZN7android2spINS_7ICameraEED1Ev)Stackframe#02pc00010d82/system/lib/libcamera_client.so(_ZN7android6CameraD1Ev)Stackframe#03pc00010de8/system/lib/libcamera_client.so(_ZN7android6CameraD0Ev)Stackframe#04pc000118f2/system/lib/libcamera_client.so(_ZTv0_n12_N7android6CameraD0Ev)Stackframe#05pc00019038/system/lib/libutils.so(_ZNK7android7RefBase9decStrongEPKv)Stackframe#06pc00017398/system/lib/libbinder.so(_ZN7android14IPCThreadState14joinThreadPoolEb)Stackframe#07pc0001c668/system/lib/libbinder.soStackframe#08pc00020156/system/lib/libutils.so(_ZN7android6Thread11_threadLoopEPv)Stackframe#09pc00096260/system/lib/libandroid_runtime.so(_ZN7android14AndroidRuntime15javaThreadShellEPv)Stackframe#10pc0002079c/system/lib/libutils.soStackframe#11pc00012134/system/lib/libc.so(__thread_entry)Stackframe#12pc00011c88/system/lib/libc.so(pthread_create)Crashdumpiscompleted**********Crashdump:**********Buildfingerprint:'unknown'pid:4201,tid:4201>>>com.subo4110.cpptest<<<signal11(SIGSEGV),code1(SEGV_MAPERR),faultaddr00000001Stackframe#00pc00000fee/data/data/com.subo4110.cpptest/lib/libUtilsJNILib.so(Java_com_subo4110_cpptest_UtilsJNILib_div):RoutineJava_com_subo4110_cpptest_UtilsJNILib_divinjni/UtilsJNILib.cpp:54Stackframe#01pc00018c30/system/lib/libdvm.so(dvmPlatformInvoke)Stackframe#02pc00053146/system/lib/libdvm.so(_Z16dvmCallJNIMethodPKjP6JValuePK6MethodP6Thread)Stackframe#03pc00046c44/system/lib/libdvm.so(_Z21dvmCheckCallJNIMethodPKjP6JValuePK6MethodP6Thread)Stackframe#04pc00054e74/system/lib/libdvm.so(_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)Stackframe#05pc0002aa4c/system/lib/libdvm.soStackframe#06pc0002e1fc/system/lib/libdvm.so(_Z12dvmInterpretP6ThreadPK6MethodP6JValue)Stackframe#07pc00066832/system/lib/libdvm.so(_Z15dvmInvokeMethodP6ObjectPK6MethodP11ArrayObjectS5_P11ClassObjectb)Stackframe#08pc0006dc62/system/lib/libdvm.soStackframe#09pc00054e74/system/lib/libdvm.so(_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)Stackframe#10pc0002aa4c/system/lib/libdvm.soStackframe#11pc0002e1fc/system/lib/libdvm.so(_Z12dvmInterpretP6ThreadPK6MethodP6JValue)Stackframe#12pc00066b02/system/lib/libdvm.so(_Z14dvmCallMethodVP6ThreadPK6MethodP6ObjectbP6JValueSt9__va_list)Stackframe#13pc0004f19a/system/lib/libdvm.soStackframe#14pc00043b20/system/lib/libdvm.soStackframe#15pc000962fe/system/lib/libandroid_runtime.soStackframe#16pc00096e66/system/lib/libandroid_runtime.so(_ZN7android14AndroidRuntime5startEPKcS2_)Stackframe#17pc00008f0e/system/bin/app_processStackframe#18pc00015a34/system/lib/libc.so(__libc_init)Crashdumpiscompleted**********Crashdump:**********Buildfingerprint:'unknown'pid:4309,tid:4309>>>com.subo4110.cpptest<<<signal11(SIGSEGV),code1(SEGV_MAPERR),faultaddr00000001Stackframe#00pc00000fee/data/data/com.subo4110.cpptest/lib/libUtilsJNILib.so(Java_com_subo4110_cpptest_UtilsJNILib_div):RoutineJava_com_subo4110_cpptest_UtilsJNILib_divinjni/UtilsJNILib.cpp:54Stackframe#01pc00018c30/system/lib/libdvm.so(dvmPlatformInvoke)Stackframe#02pc00053146/system/lib/libdvm.so(_Z16dvmCallJNIMethodPKjP6JValuePK6MethodP6Thread)Stackframe#03pc00046c44/system/lib/libdvm.so(_Z21dvmCheckCallJNIMethodPKjP6JValuePK6MethodP6Thread)Stackframe#04pc00054e74/system/lib/libdvm.so(_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)Stackframe#05pc0002aa4c/system/lib/libdvm.soStackframe#06pc0002e1fc/system/lib/libdvm.so(_Z12dvmInterpretP6ThreadPK6MethodP6JValue)Stackframe#07pc00066832/system/lib/libdvm.so(_Z15dvmInvokeMethodP6ObjectPK6MethodP11ArrayObjectS5_P11ClassObjectb)Stackframe#08pc0006dc62/system/lib/libdvm.soStackframe#09pc00054e74/system/lib/libdvm.so(_Z22dvmResolveNativeMethodPKjP6JValuePK6MethodP6Thread)Stackframe#10pc0002aa4c/system/lib/libdvm.soStackframe#11pc0002e1fc/system/lib/libdvm.so(_Z12dvmInterpretP6ThreadPK6MethodP6JValue)Stackframe#12pc00066b02/system/lib/libdvm.so(_Z14dvmCallMethodVP6ThreadPK6MethodP6ObjectbP6JValueSt9__va_list)Stackframe#13pc0004f19a/system/lib/libdvm.soStackframe#14pc00043b20/system/lib/libdvm.soStackframe#15pc000962fe/system/lib/libandroid_runtime.soStackframe#16pc00096e66/system/lib/libandroid_runtime.so(_ZN7android14AndroidRuntime5startEPKcS2_)Stackframe#17pc00008f0e/system/bin/app_processStackframe#18pc00015a34/system/lib/libc.so(__libc_init)C:Usersyongle.liu> |
Step7：堆栈中最后2个里面，可以找到signal11(SIGSEGV),code1(SEGV_MAPERR),faultaddr00000001，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！