利用backtrace和backtrace_symbols列印函式的呼叫關係
源程式如下
#include <stdio.h>
#include <string.h>
#include <stdint.h>
typedef uint32_t UINT32;
void fun3(void)
{
void* array[10] = {0};
UINT32 size = 0;
char **strframe = NULL;
UINT32 i = 0, j = 0;
size = backtrace(array, 10);
strframe = (char **)backtrace_symbols(array, size);
printf("print call frame now:/n");
for(i = 0; i < size; i++){
printf("frame %d -- %s/n", i, strframe[i]);
}
if(strframe)
{
free(strframe);
strframe = NULL;
}
}
void fun2(void)
{
fun3();
}
void fun1(void)
{
fun2();
}
int main(void)
{
fun1();
return 0;
}
linux-xms:/data/test # gcc test.c
linux-xms:/data/test # ./a.out
print call frame now:
frame 0 -- ./a.out [0x80484fe]
frame 1 -- ./a.out [0x8048582]
frame 2 -- ./a.out [0x804858f]
frame 3 -- ./a.out [0x80485a7]
frame 4 -- /lib/libc.so.6(__libc_start_main+0xdc) [0xb7e188ac]
frame 5 -- ./a.out [0x8048431]
只能看到地址
修改編譯引數
linux-xms:/data/test # gcc -rdynamic test.c
linux-xms:/data/test # ./a.out
print call frame now:
frame 0 -- ./a.out(fun3+0x4a) [0x80486de]
frame 1 -- ./a.out(fun2+0xb) [0x8048762]
frame 2 -- ./a.out(fun1+0xb) [0x804876f]
frame 3 -- ./a.out(main+0x16) [0x8048787]
frame 4 -- /lib/libc.so.6(__libc_start_main+0xdc) [0xb7e588ac]
frame 5 -- ./a.out [0x8048611]
現在可以看到函式名了,但沒有行號,不過沒關係addr2line提供了這個功能
然後我們試圖用addr2line來看地址對應的函式和行號
linux-xms:/data/test # addr2line 0x80486de -e ./a.out -f
fun3
??:0
失敗了,別急,我們再次修改編譯引數
linux-xms:/data/test # gcc -g -rdynamic test.c
linux-xms:/data/test # ./a.out
print call frame now:
frame 0 -- ./a.out(fun3+0x4a) [0x80486de]
frame 1 -- ./a.out(fun2+0xb) [0x8048762]
frame 2 -- ./a.out(fun1+0xb) [0x804876f]
frame 3 -- ./a.out(main+0x16) [0x8048787]
frame 4 -- /lib/libc.so.6(__libc_start_main+0xdc) [0xb7dcb8ac]
frame 5 -- ./a.out [0x8048611]
linux-xms:/data/test # addr2line 0x80486de -e ./a.out -f
fun3
/data/test/test.c:14
這次我們成功了,多加了-g引數。
backtrace和backtrace_symbols的具體說明可以參考
http://www.kernel.org/doc/man-pages/online/pages/man3/backtrace.3.html