Practical C Programming

How to do it…

1. Define two variables of the pthread_t type to store two thread identifiers. Also, define a mutex object:

pthread_t tid1,tid2;pthread_mutex_t lock;

2. Invoke the pthread_mutex_init method to initialize the mutex object with the default mutex attributes:

pthread_mutex_init(&lock, NULL)

3. Invoke the pthread_create function twice to create two threads, and assign the identifiers that we created in step 1. Execute a function for creating the two threads:

pthread_create(&tid1, NULL, &runThread, NULL);pthread_create(&tid2, NULL, &runThread, NULL);

4. In the function, the pthread_mutex_lock method is invoked and the mutex object is passed to it to lock it:

pthread_mutex_lock(&lock);

5. Invoke the pthread_self method and assign the ID ...