finstrument-functions

2017-12-03　　23:59:16

参考 如何快速地在每个函数入口处加入相同的语句？

https://www.zhihu.com/question/56132218

做个存档

1 scj@scjComputer:~/THpro/func_trace$ tree .
2 .
3 ├── func_trace.c
4 ├── func_trace.sh
5 ├── imple
6 │   ├── bar.c
7 │   └── bar.h
8 ├── main.c
9 └── 步骤

func_trace.c

 1 #include <stdio.h>
 2 
 3 static FILE *fp_trace;
 4 
 5 void __attribute__((constructor)) traceBegin(void) {
 6   fp_trace = fopen("func_trace.out", "w");
 7 }
 8 
 9 void __attribute__((destructor)) traceEnd(void) {
10   if (fp_trace != NULL) {
11     fclose(fp_trace);
12   }
13 }
14 
15 void __cyg_profile_func_enter(void *func, void *caller) {
16   if (fp_trace != NULL) {
17     fprintf(fp_trace, "entry %p %p\n", func, caller);
18   }
19 }
20 
21 void __cyg_profile_func_exit(void *func, void *caller) {
22   if (fp_trace != NULL) {
23     fprintf(fp_trace, "exit %p %p\n", func, caller);
24   }
25 }

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