warning in pthread creation

nathan · 09-09-2009, 05:00 AM

void * func1( void); // prototype

void * func1( void)
{

..
...
}

int main()
{
int ret;
pthread_t test1;

ret = pthread_create(&test1,NULL,&func1,NULL);
if(ret == 0)
{
printf("\n success in creating a thread \n");
}

pthread_exit(NULL);
return 0;
}

after compiling the above code i am gettin following warning,

thread_1.c:805: warning: passing arg 3 of `pthread_create' from incompatible pointer type

kindly resolve the same

thanks in advance
Nathan

hyperactive22 · 09-09-2009, 06:49 AM

The prototype of pthread_create is:
int pthread_create(pthread_t *restrict thread,const pthread_attr_t *restrict attr,void *(*start_routine)(void*), void *restrict arg);
which means that the method u are passing as param to pthread_create should have following prototype:
void * method_name (void*) ;