Initialize a mutex attribute object
#include <pthread.h> int pthread_mutexattr_init( pthread_mutexattr_t* attr );
- A pointer to the pthread_mutexattr_t object that you want to initialize.
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The pthread_mutexattr_init() function initializes the attributes in the mutex attribute object attr to their default values. After initializing a mutex attribute object, you can use it to initialize one or more mutexes by calling pthread_mutex_init() .
The mutex attributes and their default values are:
- PTHREAD_PRIO_INHERIT—when a thread is blocking higher-priority threads by locking one or more mutexes with this attribute, the thread's priority is raised to that of the highest priority thread waiting on the PTHREAD_PRIO_INHERIT mutex.
- PTHREAD_RECURSIVE_DISABLE—threads can't recursively lock a mutex; any thread that tries to lock an already locked mutex becomes blocked.
After calling this function, you can use the pthread_mutexattr_* family of functions to make any changes to the attributes:
- Insufficient memory to initialize mutex attribute object attr.