void *thread1() {
// printOut(itoa(mythread_self(),10));
// printOut("Thread1\n");
int i=0;
while(i<200) {
mythread_mutex_lock(&lock);
glval++;
//usleep(100);
if(glval==100) {
printOut("Thread1 sleeping for 10000 microseconds to hit blocking mutex condition in thread2\n");
mythread_cond_signal(&cond);
mythread_cond_broadcast(&cond1);
usleep(10000);
}
mythread_mutex_unlock(&lock);
printOut("Using IO in thread1 \n");
i++;
}
}
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);
}
