Thread Completion
In this lesson, you will learn how you can make your program wait for a thread to complete.
We'll cover the following...
The example in the previous lesson shows how to create a thread. However, what happens if you want to wait for a thread to complete? You need to do something special in order to wait for completion; in particular, you must call the routine pthread_join().
pthread_join()
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int pthread_join(pthread_t thread, void **value_ptr);
This routine takes two arguments. The first is of type pthread_t, and is used to specify which thread to wait for. This variable is initialized by the thread creation routine (when you pass a pointer to it as an argument to pthread_create()); if you keep it around, you can use it to wait for that thread to terminate.
The second argument is a pointer to the return value you expect to ...
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