int main()
{
int i;
mythread_t thread[NR_THREADS];
mythread_setconcurrency(3);
mythread_mutex_init(&mutex, NULL);
mythread_cond_init(&okToProceed, NULL);
for (i = 0; i < NR_THREADS; i++)
mythread_create(&thread[i], NULL, runner, NULL);
sleep(2);
printf("Main: sending broadcast signal to all threads\n");
fflush(stdout);
mythread_cond_broadcast(&okToProceed);
printf("Main: joining all threads\n");
fflush(stdout);
for (i = 0; i < NR_THREADS; i++)
mythread_join(thread[i], NULL);
printf("Main: about to exit\n");
fflush(stdout);
mythread_exit(NULL);
mythread_cond_destroy(&okToProceed);
mythread_mutex_destroy(&mutex);
return 1;
}
int main (void)
{
int test;
// initialize mutex, condition variable and barrier.
mythread_mutex_init (&mut, NULL);
mythread_cond_init (&con, NULL);
// 4 threads will be calling wait.
mythread_barrier_init (&barr, NULL, 4);
mythread_setconcurrency (8);
// create first 3 threads and assign them functions.
mythread_create (&t1, NULL, foo1, NULL);
mythread_create (&t2, NULL, foo2, NULL);
mythread_create (&t3, NULL, foo3, NULL);
// stall main until all threads have finished.
if ((test = mythread_barrier_wait (&barr) != 0) && (test != MYTHREAD_BARRIER_SERIAL_THREAD))
PASS--;
// after this stage, mutex and condition variables are not required, destroy them.
if ( mythread_cond_destroy (&con) != 0)
PASS --;
if ( mythread_mutex_destroy (&mut) != 0)
PASS --;
// create next 3 threads and assign functions. This is to test reusability of barriers.
mythread_create (&t4, NULL, foo3, NULL);
mythread_create (&t5, NULL, foo4, NULL);
mythread_create (&t6, NULL, foo5, NULL);
// let main also wait on the barrier
if ((test = mythread_barrier_wait (&barr) != 0) && (test != MYTHREAD_BARRIER_SERIAL_THREAD))
PASS--;
// at this point, we are sure that all the threads have finished running. Now check value of PASS for any errors.
// If PASS is 0, means all function executed successfully. If PASS is less than 0, atleast one function returned error.
// print PASS or FAIL accordingly.
if (PASS == 0)
printf ("PASS\n");
else
printf ("FAIL\n");
//destroy the barrier and exit.
mythread_barrier_destroy (&barr);
mythread_exit(NULL);
return 0;
}
int main(int argc, char **argv)
{
int i;
char buffer[1024];
futex_init(&printFutex, 1);
mythread_t mythread1[NTHREADS];
mythread_t signalingThread[NTHREADS/2];
mythread_setconcurrency(4);
mythread_mutex_init(&mutex,NULL);
mythread_cond_init(&condition,NULL);
mythread_barrier_init(&barrier,NULL,NTHREADS+1);
/* Create Threads */
for(i=0;i<NTHREADS;i++){
sprintf(buffer, "Created thread : %d\n", i+1);
printToConsole(buffer);
mythread_create(&mythread1[i],NULL,&thread_func, NULL);
}
/*Signal threads waiting on cond var*/
while(count<NTHREADS){
/* Special case for testing broadcast*/
if(count == NTHREADS/2){
mythread_cond_broadcast(&condition);
}else{
mythread_cond_signal(&condition);
}
}
/* Waiting on barrier. Last thread, or this main thread will unblock the barrier depending on the execution sequence */
mythread_barrier_wait(&barrier);
sprintf(buffer, "Out of barrier, main thread exiting..\n");
printToConsole(buffer);
/* Destroy mutex, barrier and cond*/
mythread_cond_destroy(&condition);
mythread_mutex_destroy(&mutex);
mythread_barrier_destroy(&barrier);
sprintf(buffer, "Finished Execution\n");
printToConsole(buffer);
}
int main()
{
int i;
mythread_t thread[NTHREADS];
mythread_setconcurrency(NTHREADS+1);
mythread_mutex_init(&mut, NULL);
mythread_cond_init(&cond, NULL);
for(i = 0; i < NTHREADS; i++)
mythread_create(&thread[i], NULL, fun, NULL);
for(i = 0; i < INT_MAX/10; i++);
printf("Broadcast\n"); fflush(stdout);
mythread_cond_broadcast(&cond);
printf("Now join\n"); fflush(stdout);
for(i = 0; i < NTHREADS; i++)
mythread_join(thread[i], NULL);
printf("main exit\n"); fflush(stdout);
mythread_exit(NULL);
mythread_cond_destroy(&cond);
mythread_mutex_destroy(&mut);
return 1;
}
int main() {
mythread_setconcurrency(4);
mythread_mutex_init(&lock,NULL);
mythread_mutex_init(&lock1,NULL);
mythread_cond_init(&cond,NULL);
mythread_cond_init(&cond1,NULL);
glval=0;
glval1=0;
mythread_t tid1,tid2,tid3,tid4,tid5;
mythread_queue_t head;
tid1 = malloc(sizeof(struct mythread));
tid2 = malloc(sizeof(struct mythread));
tid3 = malloc(sizeof(struct mythread));
tid4 = malloc(sizeof(struct mythread));
tid5 = malloc(sizeof(struct mythread));
/**************** Test cases for testing all functions except destroy functions ********************/
mythread_create(&tid3,NULL,thread3,NULL); //Thread3 going to call condition wait and will be woken up(condition signal)
mythread_create(&tid4,NULL,thread4,NULL); //Thread4 going to call condition wait and will be woken up(condition broadcast signal)
mythread_create(&tid5,NULL,thread5,NULL); //Thread5 going to call condition wait and will be woken up(condition broadcast signal)
printOut("Sleeping for 1 second so that threads calling condition waits starts before their condition variables are signaled\n");
sleep(1); // Sleep for 1 second so that tid3,tid4,tid5 waits on condition wait before condition signal/broadcast is sent
mythread_create(&tid1,NULL,thread1,NULL);
mythread_create(&tid2,NULL,thread2,NULL);
mythread_join(tid1,NULL);
mythread_join(tid2,NULL);
printOut("Value of global variable incremented 200 times in two threads : ");
printOut(itoa(glval,10));
printOut("\n");
/*************************************************************************************************/
mythread_join(tid3,NULL);
mythread_join(tid4,NULL);
mythread_join(tid5,NULL);
printOut("=================================================================\n");
printOut("Repeat the entire test after destroying(mythread_mutex_destroy,mythread_cond_destroy) and reinitializing 2 locks and 2 condition variables\n");
printOut("=================================================================\n");
/********* Destroying all mmutexes and locks and reinitialising again ****************************/
mythread_mutex_destroy(&lock);
mythread_mutex_destroy(&lock1);
mythread_cond_destroy(&cond);
mythread_cond_destroy(&cond1);
mythread_mutex_init(&lock,NULL);
mythread_mutex_init(&lock1,NULL);
mythread_cond_init(&cond,NULL);
mythread_cond_init(&cond1,NULL);
/**************************************************************************************************/
/**************** Test cases for testing all functions except destroy functions ********************/
glval=0;
mythread_create(&tid3,NULL,thread3,NULL); //Thread3 going to call condition wait and will be woken up(condition signal)
mythread_create(&tid4,NULL,thread4,NULL); //Thread4 going to call condition wait and will be woken up(condition broadcast signal)
mythread_create(&tid5,NULL,thread5,NULL); //Thread5 going to call condition wait and will be woken up(condition broadcast signal)
printOut("Sleeping for 1 second so that threads calling 'condition wait' starts before their condition variables are signaled\n");
sleep(1); // Sleep for 1 second so that tid3,tid4,tid5 waits on condition wait before condition signal/broadcast is sent
mythread_create(&tid1,NULL,thread1,NULL);
mythread_create(&tid2,NULL,thread2,NULL);
mythread_join(tid1,NULL);
mythread_join(tid2,NULL);
printOut("Value of global variable incremented in the repeated test 200 times in two threads : ");
printOut(itoa(glval,10));
printOut("\n");
/**************************************************************************************************/
mythread_exit(NULL);
}
