Updated: April 19, 2023 |
Get the recursive attribute from a mutex attribute object
#include <pthread.h> int pthread_mutexattr_getrecursive( const pthread_mutexattr_t* attr, int* recursive );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The pthread_mutexattr_getrecursive() function gets the recursive attribute from the mutex attribute object attr and stores it in recursive.
If the recursive attribute is set to PTHREAD_RECURSIVE_ENABLE, a thread that has already locked the mutex can lock it again without blocking. If the recursive attribute is set to PTHREAD_RECURSIVE_DISABLE, any thread that tries to lock the mutex will block, if that mutex is already locked.
The default value of the recursive attribute is PTHREAD_RECURSIVE_DISABLE.
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |