[Valgrind-users] [Help] There is the problem.

[Wuweijia <wuw...@hu...>]

HI:
    I ran the valgrind with sh cmd. There is no output. That is why?


Run the valgrind cmd:   valgrind --xml=yes --xml-file=./r.xml sh -c ./test0

The output as below:
fd=4, errno=0
va=0x2800
0

There is no xml file generated;

The code (tes0) as below:
#include <stdio.h>
#include <stdlib.h>
#include<fcntl.h>
#include <sys/types.h>
#include<sys/mman.h>
#include<unistd.h>
#include<string.h>

#define ALLOC_SIZE 1024  * 10

int main(int argc, char ** argv) {
        int fd = open("./test.log", O_RDWR );
        int errno = 0;
        int tmp = 0;
        printf("fd=%d, errno=%d\n", fd, errno);
        while(1) {
                void * va = mmap(NULL, ALLOC_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
                printf("va=%p\n");
                tmp = *((int *)va + 5);
                printf("%d\n", tmp);
                munmap(va, ALLOC_SIZE);
                usleep(1000 * 100);
                break;
        }

        close(fd);
        return 0;
}