pthread_mutex_init

pthread_mutex_init() is a function in the pthreads library in C programming language that is used to initialize a mutex (short for mutual exclusion). A mutex is a variable that is used to protect shared resources in a multi-threaded environment, allowing only one thread to access the resource at a time.

The syntax for pthread_mutex_init() is:

int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr);

Where:

- `mutex` is a pointer to the mutex variable to be initialized.
- `attr` is a pointer to a mutex attribute object that specifies the mutex's properties. If this is NULL, the mutex is initialized with default attributes.

The function returns 0 on success and an error code on failure.

Once initialized, the mutex can be used with other pthreads functions to provide mutual exclusion and protect shared resources in a multi-threaded environment.