Initialize a mutex attribute object
#include <pthread.h> int pthread_mutexattr_init( pthread_mutexattr_t* attr );
libc
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:
After calling this function, you can use the pthread_mutexattr_* family of functions to make any changes to the attributes:
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |
pthread_mutex_init(), pthread_mutexattr_destroy(), pthread_mutexattr_getprioceiling(), pthread_mutexattr_getprotocol(), pthread_mutexattr_getpshared(), pthread_mutexattr_getrecursive(), pthread_mutexattr_gettype(), pthread_mutexattr_setprioceiling(), pthread_mutexattr_setprotocol(), pthread_mutexattr_setpshared(), pthread_mutexattr_setrecursive(), pthread_mutexattr_settype()
“Mutexes: mutual exclusion locks” in the QNX Neutrino Microkernel chapter of the System Architecture guide