pthreads recursively calling system command and segfault appears
- by jess
I have a code base where i am creating 8 threads and each thread just calls system command to display date in a continuous cycle, as shown below:
void *
system_thread(void *arg)
{
int cpu = (int)arg;
printf("thread : start %d\n", cpu);
for (;;) {
// date ã³ãã³ãã®å®è¡
if (mode == 0) {
system("date");
} else {
f_hfp_nlc_Fsystem("date");
}
}
sleep(timerval);
return NULL;
}
This application segfaults after running for 2-3 seconds, due to following 2 reasons:
1. read access, where the address is out of VM area
2. write acces, where it does not of write permission and its trying to modify some structure.
