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Try to lock a thread spinlock
#include <pthread.h>
int pthread_spin_trylock(
pthread_spinlock_t * spinner );
- spinner
- A pointer to the pthread_spinlock_t object that you
want to try to lock.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The pthread_spin_trylock() function attempts to lock the
thread spinlock specified by spinner. It returns immediately
if spinner can't be locked.
If a thread attempts to lock a spinlock that it's already locked via
pthread_spin_lock()
or pthread_spin_trylock(), the thread deadlocks.
- EOK
- Success.
- EAGAIN
- Insufficient resources available to lock spinner.
- EBUSY
- The thread spinlock spinner is already locked by another thread.
- EINVAL
- Invalid pthread_spinlock_t object spinner.
POSIX 1003.1 THR SPI
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
pthread_spin_destroy(),
pthread_spin_init(),
pthread_spin_lock(),
pthread_spin_unlock()
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