/* Simple thread test - am having problems proving dtrace

thread/posix locking works; could be a vmware issue... */

# include <stdio.h>

# include <pthread.h>

# include <signal.h>

pthread_mutex_t m;

static void

thread(void *arg)

{

printf("2: in thread...about to lock\n");

pthread_mutex_lock(&m);

printf("2: in thread .. succeeded lock\n");

pause();

}

int main(int argc, char **argv)

{ pthread_t tid;

pthread_attr_t a;

sigset_t nset, oset;

pthread_mutex_init(&m, NULL);

printf("1: main creating thread\n");

pthread_mutex_lock(&m);

(void) pthread_attr_init(&a);

(void) pthread_attr_setdetachstate(&a, PTHREAD_CREATE_DETACHED);

(void) sigfillset(&nset);

(void) sigdelset(&nset, SIGABRT); /* unblocked for assert() */

(void) sigdelset(&nset, SIGUSR1); /* see dt_proc_destroy() */

(void) pthread_sigmask(SIG_SETMASK, &nset, &oset);

pthread_create(&tid, NULL, thread, NULL);

printf("1: thread created\n");

pause();

}