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PTHREAD_SPIN_INIT(3) FreeBSD Library Functions Manual 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 IEEE Std 1003.1-2008 ("POSIX.1"). 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. FreeBSD 14.1-RELEASE-p8 April 6, 2020 FreeBSD 14.1-RELEASE-p8