What are conditions in the pthreads library?

What are conditions in the pthreads library?

Conditions in the pthreads library are synchronization primitives that allow threads to wait for certain conditions to be true.

How do I use condition variables in my code?

You can use condition variables with mutexes to block a thread until a specific condition is met. Use pthread_cond_wait and pthread_cond_signal.

Can you give me a code example?

Sure! Here's a simple example:

pthread_mutex_t mutex;
pthread_cond_t cond;

void* thread_function(void* arg) {
    pthread_mutex_lock(&mutex);
    while (!condition_met) {
        pthread_cond_wait(&cond, &mutex);
    }
    // Do something when condition is met
    pthread_mutex_unlock(&mutex);
}

void signal_condition() {
    pthread_mutex_lock(&mutex);
    condition_met = true;
    pthread_cond_signal(&cond);
    pthread_mutex_unlock(&mutex);
}