Warning: main(/www/www/htdocs/style/globals.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/lib_ref/p/pthread_rwlock_destroy.html on line 1
Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/globals.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/p/pthread_rwlock_destroy.html on line 1
Warning: main(/www/www/htdocs/style/header.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/lib_ref/p/pthread_rwlock_destroy.html on line 8
Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/header.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/p/pthread_rwlock_destroy.html on line 8
Destroy a read-write lock
#include <pthread.h>
int pthread_rwlock_destroy( pthread_rwlock_t* rwl );
- rwl
- A pointer to a pthread_rwlock_t object that you want to
destroy.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The pthread_rwlock_destroy() function destroys the read-write lock
referenced by rwl, and releases the system resources used by the
lock.
You can destroy the read-write lock if one of the following is true:
- no thread has a active shared or exclusive lock on rwl
- the calling thread has an active exclusive lock on rwl.
|
After successfully destroying a read-write lock, don't use it again without
reinitializing it by calling
pthread_rwlock_init(). |
- EOK
- Success.
- EBUSY
- The read-write lock rwl is
still in use. The calling thread doesn't have an exclusive lock.
POSIX 1003.1 THR
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
pthread_rwlock_init(),
pthread_rwlock_rdlock(),
pthread_rwlock_tryrdlock(),
pthread_rwlock_trywrlock(),
pthread_rwlock_unlock(),
pthread_rwlock_wrlock()
Processes and Threads
chapter of Getting Started with QNX Neutrino
Warning: main(/www/www/htdocs/style/footer.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/lib_ref/p/pthread_rwlock_destroy.html on line 147
Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/footer.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/p/pthread_rwlock_destroy.html on line 147