android6.0/7.0 dump CallStack使用

1.Java中：Log.e(“dump_test”,Log.getStackTraceString(new Throwable()));2.C++中: <1>.test.cpp  #include <utils/Log.h>  #include <utils/CallStack.h>  void dumping_callstack(){   android::CallStack stack;   //getpid()和gettid()效果一样   //stack.update(2,getpid());   //stack.update(2,gettid());   stack.update();  //输出到printf  stack.dump(1);  //输出到logcat  stack.log("dump_test");  //可以设置第2、3个参数  //stack.log("Dumping Stack",ANDROID_LOG_ERROR ,"123 ");}void func1(){  dumping_callstack();}void func2(){  func1();}void func3(){  func2();}int main(){  ALOGE("main_test------------------>");  func3();} <2>.Android.mk  LOCAL_PATH := $(call my-dir)  include $(CLEAR_VARS)  LOCAL_SRC_FILES := test.cpp  LOCAL_MODULE_TAGS := optional  LOCAL_MODULE := test  LOCAL_SHARED_LIBRARIES += libcutils libutils  include $(BUILD_EXECUTABLE)3.C中： <1>.创建callstack.cpp   #include <utils/CallStack.h>   extern "C" void dumping_callstack();   void dumping_callstack(){      android::CallStack stack;      stack.update();      stack.log(“dump_test“);   }  <2>.创建callstack.h      void dumping_callstack();  <3>.测试test.c      #include "callstack.h"      static ssize_t out_write(){        dumping_callstack();      }  <4>.Anroid.mk中添加到编译选项：callstack.cpp及库      LOCAL_SHARED_LIBRARIES := libcutils libutils      LOCAL_SRC_FILES := callstack.cpp4.Kernel中:#include <asm/ptrace.h>printk(KERN_ERR "dump_stack start: %s() %d \n",__FUNCTION__,__LINE__);  dump_stack();.......printk(KERN_ERR "dump_stack stop: %s() %d \n",__FUNCTION__,__LINE__);  根据dump stack的log位置加printk()。测试：# adb logcat | grep dump_test