Lock a mutex multiple times in the same thread
- by Megacan
Hi,
I'm developing an application on an embedded linux OS (uClinux) and I need to be able to lock the mutex more than once (by the same thread).
I have a mutex and a mutexattr defined and initialized as follows:
pthread_mutexattr_t waiting_barcode_mutexattr;
pthread_mutex_t waiting_barcode_mutex;
pthread_mutexattr_init(&waiting_barcode_mutexattr);
pthread_mutexattr_settype(&waiting_barcode_mutexattr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(&waiting_barcode_mutex, &waiting_barcode_mutexattr);
But when I try to acquire the lock twice it blocks on the second lock:
pthread_mutex_lock(&waiting_barcode_mutex);
pthread_mutex_lock(&waiting_barcode_mutex);
Am I initializing it wrong or is there a better way of accomplishing the same?
Thanks in advance.
