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Get the recursive attribute from a mutex attribute object
#include <pthread.h>
int pthread_mutexattr_getrecursive(
const pthread_mutexattr_t* attr,
int* recursive );
- attr
- A pointer to the pthread_mutexattr_t object that you
want to get the attribute from.
- pshared
- A pointer to a location where the function can store the recursive
attribute.
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.
- EOK
- Success.
- EINVAL
- Invalid mutex attribute object attr.
QNX Neutrino
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
pthread_mutexattr_init(),
pthread_mutexattr_setrecursive()
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