linux打印当前函数调用栈backtrace

不多说，见如下文件。

backtrace.c：

#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>

#define BT_MAX_TRACE 100

void print_trace (void)
{
    void *array[BT_MAX_TRACE];
    size_t size;
    char **strings;
    size_t i;

    size = backtrace (array, BT_MAX_TRACE);
    strings = backtrace_symbols (array, size);

    printf ("Obtained %zd stack frames.\n", size);

    for (i = 0; i < size; i++)
        printf ("%s\n", strings[i]);

    free (strings);
}


void dummy_function (void)
{
    print_trace ();
}
void test1()
{
 dummy_function();
}
void test2()
{
 test1();
}

int main (void)
{
    test2();
    return 0;
}

编译成backtrace，执行即可看出效果：gcc -g -rdynamic -o backtrace backtrace.c

# ./bt
Obtained 7 stack frames.
./bt(print_trace+0x1f) [0x80487b3]
./bt(dummy_function+0xb) [0x8048822]
./bt(test1+0xb) [0x804882f]
./bt(test2+0xb) [0x804883c]
./bt(main+0xb) [0x8048849]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6) [0x17fbd6]
./bt() [0x8048701]