(buffer, ARRAY_SIZE(buffer) ); printf("backtrace() returned %d addresses:\n", nptrs); strings = backtrace_symbols...(buffer, nptrs); if (NULL == strings) { perror("backtrace_symbols"); exit(-1); } for (j
char** backtrace_symbols (void *const *buffer, int size); 函数功能:将从backtrace函数获取的信息转化为一个字符串数组。...2、backtrace_symbols生成的字符串都是malloc出来的,最后需要free该块内存。...void backtrace_symbols_fd (void *const *buffer, int size, int fd) 功能:backtrace_symbols_fd与backtrace_symbols...= 16; void * array[100]; int stack_num = backtrace(array, size); char ** stacktrace = backtrace_symbols...array, stack_num); backtrace_symbols_fd(array,size,STDOUT_FILENO); #if 0 char ** stacktrace = backtrace_symbols
. */ char **backtrace_symbols(void *const *array, int size); /* This function is similar to backtrace_symbols...backtrace的实现依赖于栈指针(fp寄存器),在gcc编译过程中任何非零的优化等级(-On参数)或加入了栈指针优化参数-fomit-frame-pointer后多将不能正确得到程序栈信息; backtrace_symbols...backtrace(buffer, BACKTRACE_SIZE); printf("backtrace() returned %d addresses\n", nptrs); strings = backtrace_symbols...(buffer, nptrs); if (strings == NULL) { perror("backtrace_symbols"); exit(EXIT_FAILURE); } for
在Linux应用程序中,也可以打印当前的函数调用关系(backtrace),GNU为此提供了backtrace ( )和backtrace_symbols( )。...{ void *array[10]; char **strings; int size, i; size = backtrace (array, 10); strings = backtrace_symbols...strings = backtrace_symbols (array, size); if (strings !
; size_t i; signal(signum,SIG_DFL); size = backtrace(array,100); strings = (char**)backtrace_symbols
glibc的backtrace和backtrace_symbols:可以获取调用堆栈上函数的实际符号名称。 使用libunwind。
#include int backtrace(void **buffer, int size); // backtrace 栈回溯,保存各个栈帧的地址 char **backtrace_symbols...(void *const *buffer, int size); // backtrace_symbols 根据地址,转成相应的函数符号 // buffer 是指向一个数组的指针,数组存放的每一项是指向字符串的指针...// backtrace_symbols 内部调用malloc 分配数组空间,需要调用者自己释放,但数组指针指向的字符串不需要调用者去释放。
size, i; char **strings; size = backtrace(array, BACKTRACE_SIZ); strings = backtrace_symbols...printf("%p : %s\n", array[i], strings[i]); } free(strings); // malloced by backtrace_symbols
我正是用了backtrace()和backtrace_symbols()这两个函数实现的,下面是一个简单的例子,通过这个例子我们来介绍具体的方法: #include #include...voidprint_stacktrace() { intsize=16; void*array[16]; intstack_num=backtrace(array,size); char**stacktrace=backtrace_symbols
= 50; void *array[dump_size]; int size = backtrace(array, dump_size); char **symbols = backtrace_symbols
init]; void* callstack[128]; int i, frames = backtrace(callstack, 128); char** traceChar = backtrace_symbols...traceChar[I]]; } NSLog(crashString);} 注意:上面这段代码对各种信号都进行了注册,捕获到异常信号后,在处理方法 handleSignalException 里通过 backtrace_symbols
void)logStack{ void* callstack[128]; int frames = backtrace(callstack, 128); char **strs = backtrace_symbols
= 0; size_t i = 0; char ** strings = NULL; size = backtrace(buffer,30); strings = backtrace_symbols
:@"Stack:\n"]; void* callstack[128]; int i, frames = backtrace(callstack, 128); char** strs = backtrace_symbols
callstack[128]; int frames = backtrace(callstack, 128);//用于获取当前线程的函数调用堆栈,返回实际获取的指针个数 char **strs = backtrace_symbols
Stack:\n"]; void* callstack[128]; int i, frames = backtrace(callstack, 128); char** strs = backtrace_symbols
在OOMDetector中,我们对Hook方法代码的执行效率进行了严格控制,也采取了一些策略对Hook方法中耗时较多的堆栈回溯和锁等待进行了优化: 1.优化堆栈回溯方法 对于堆栈回溯,系统提供了backtrace_symbols
当遇到致命信号(即SIGFPE)时,我们的信号处理程序将尝试以下操作: 捕获每个线程的Python堆栈轨迹(使用faulthandler模块) 捕获该线程的本机堆栈轨迹(通常使用libc的backtrace和backtrace_symbols
nptrs=backtrace(buffer,1024*1024*10); cout<<"backtrace returned address:"<<nptrs<<endl; strings=backtrace_symbols
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