#include <assert.h>

#include <pthread.h>

#include <stdbool.h>

#include <stdio.h>

#include <stdlib.h>

pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

bool should_exit;

pthread_t thread;

void *workerThread(void* arg) {

pthread_mutex_lock(&mutex);

while (!should_exit)

pthread_cond_wait(&cond, &mutex);

pthread_mutex_unlock(&mutex);

return NULL;

}

void terminateThread() {

pthread_mutex_lock(&mutex);

should_exit = true;

pthread_cond_signal(&cond);

pthread_mutex_unlock(&mutex);

int res = 0;

int rc = pthread_join(thread, (void**)&res);

assert(rc == 0);

assert(res == 0);

printf("done waiting - thread successfully terminated\n");

}

int main(int argc, char* argv[]) {

int rc = atexit(terminateThread);

assert(rc == 0);

rc = pthread_create(&thread, NULL, workerThread, NULL);

assert(rc == 0);

return 0;

}