【跟我一起学gdb】(8)自动化gdb脚本之malloc和free每次调用的堆栈信息写日志

main.c

tom@ubuntu:~/dvp$ cat -n ./main.c 
     1	#include <stdlib.h>
     2	#include <stdio.h>
     3	
     4	void MyMalloc(const size_t siz, char** pptr)
     5	{
     6		*pptr = malloc(siz);
     7		return;
     8	}
     9	
    10	void MyFree(void* ptr)
    11	{
    12		free(ptr);
    13		return;
    14	}
    15	
    16	int main()
    17	{
    18		char* pcBuf1 = (char*)0;
    19		char* pcBuf2 = (char*)0;
    20		char* pcBuf3 = (char*)0;
    21		char* pcBuf4 = (char*)0;
    22	
    23		MyMalloc(10, &pcBuf1);
    24		MyMalloc(20, &pcBuf2);
    25		MyMalloc(30, &pcBuf3);
    26		MyMalloc(40, &pcBuf4);
    27	
    28	
    29		MyFree(pcBuf1);
    30		MyFree(pcBuf3);
    31		MyFree(pcBuf4);
    32	
    33		return 0;
    34	}
tom@ubuntu:~/dvp$ 

gdb自动化脚本

功能：每次调用malloc或free时都把堆栈保存在log文件中

tom@ubuntu:~/dvp$ cat ./gdbcmd_mallocfree_btlog.txt 
set pagination off		
set logging file