need to free a mutex?

I have a very simple (sample) C program as follows. I want to ensure I release any resources necessary so that valgrind does not complain. Do I need to free mutex1? Or do anything before the program terminates? Or is the mutex1 not allocate memory?

02 pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER; 03 int counter=0; 04 05 /* Function C */ 06 void functionC() 07 { 08 pthread_mutex_lock( &mutex1 ); 09 counter++ 10 pthread_mutex_unlock( &mutex1 ); 11 }

-------------Problems Reply------------

No, it is fine as it is. It is not necessary to use pthread_mutex_destroy on a statically allocated mutex.

No, you don't need to free mutex1. PTHREAD_MUTEX_INITIALIZER is a macro that hides a struct initialisation.

mutex1 in your code is a global variable rather than a heap-allocated variable. You do not need to free it. The OS will free all resources that your app use when you app terminate.

Category:c# Views:0 Time:2012-02-01
Tags: mutex init free

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