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tis_write_trylock(3) Library Functions Manual tis_write_trylock(3) NAME tis_write_trylock - Attempts to acquire the specified read-write lock for write access. LIBRARY Standard C Library (libc.so, libc.a) SYNOPSIS #include <tis.h> int tis_write_trylock( tis_rwlock_t *lock); STANDARDS None PARAMETERS Address of the read-write lock to be acquired for write access. DESCRIPTION This routine attempts to acquire a read-write lock for write access. The routine attempts to immediately acquire the lock. If the lock is acquired, zero (0) is returned. If the lock is held by another thread (for either read or write access), [EBUSY] is returned and the calling thread does not wait for the write-access lock to be acquired. Note that it is a coding error to attempt to acquire the lock for write access if the lock is already held by the calling thread. (However, this routine returns [EBUSY] anyway, because no ownership error-check- ing takes place.) RETURN VALUES If an error condition occurs, this routine returns an integer value in- dicating the type of error. Possible return values are as follows: Successful completion; the lock is acquired for write access. The lock was not acquired for write access, as it is already held by another thread. ERRORS None RELATED INFORMATION Functions: tis_read_lock(3), tis_read_trylock(3), tis_read_unlock(3), tis_rwlock_destroy(3), tis_rwlock_init(3), tis_write_lock(3), tis_write_unlock(3) Manuals: Guide to DECthreads and Programmer's Guide delim off tis_write_trylock(3)