PTHREAD_SPIN_INIT(3)

NAME
pthread_spin_init, pthread_spin_destroy - initialize and destroy a spinlock object

SYNOPSIS
#include <pthread.h>
int
pthread_spin_init(pthread_spinlock_t *lock, int pshared);
int
pthread_spin_destroy(pthread_spinlock_t *lock);

DESCRIPTION
The pthread_spin_init() function creates a new spinlock object, with sharing attributes specified by pshared.

The pthread_spin_destroy() function frees the resources allocated for the lock.

RETURN VALUES
If successful, pthread_spin_init() and pthread_spin_destroy() return zero; otherwise an error number is returned to indicate the error.

ERRORS
pthread_spin_init() will fail if:

[EINVAL]
    The value specified by lock is invalid.

[ENOMEM]
    The process cannot allocate enough memory to create another spinlock object.

[ENOTSUP]
    The shared attributes specified by pshared are not supported by the current implementation.

pthread_spin_destroy() will fail if:

[EINVAL]
    The value specified by lock is invalid.

[EBUSY]
    The lock is still in use.

SEE ALSO
pthread_spin_lock(3), pthread_spin_unlock(3)

STANDARDS
pthread_spin_init() and pthread_spin_destroy() conform to p1003.1-2008.

BUGS
Currently only PTHREAD_PROCESS_PRIVATE spinlocks are supported and the pshared attribute is always set that way. Any attempts to initialize it to a different value will trigger ENOTSUP.