int semaphore_create()
{
int flag_sem = O_CREAT|O_RDWR;
int init_value = 1;
semaphore_unlink(SEM_NAME);
if (semaphore_open(SEM_NAME, flag_sem, FILE_MODE, init_value) == -1)
{
perror("semaphore_create fail");
return -1;
}
return 0;
}
static bool remove(const char *name)
{ return semaphore_unlink(name); }