Ensure Error Handling for pthread_mutex Functions

[quic-mtharu]

Description

It’s good practice to check the return values of pthread_mutex_init, pthread_mutex_lock, pthread_mutex_unlock, and pthread_mutex_destroy to ensure they execute successfully. This helps in identifying failures early and handling them appropriately.

Suggested Change

Add checks for the return values of pthread_mutex_init, pthread_mutex_lock, pthread_mutex_unlock, and pthread_mutex_destroy in the relevant parts of the codebase. For example:

// Initialize mutex
ret = pthread_mutex_init(&mutex, NULL);
if (ret != 0) {
    // Handle error
    perror(stderr, "Mutex initialization failed: %s\n", strerror(ret));
    return ret;
}

// Lock mutex
ret = pthread_mutex_lock(&mutex);
if (ret != 0) {
    // Handle error
    perror(stderr, "Mutex lock failed: %s\n", strerror(ret));
    return ret;
}

// Unlock mutex
ret = pthread_mutex_unlock(&mutex);
if (ret != 0) {
    // Handle error
    perror(stderr, "Mutex unlock failed: %s\n", strerror(ret));
    return ret;
}

// Destroy mutex
ret = pthread_mutex_destroy(&mutex);
if (ret != 0) {
    // Handle error
    perror(stderr, "Mutex destruction failed: %s\n", strerror(ret));
    return ret;
}