osf1 man page for tis_write_trylock

Query: tis_write_trylock

OS: osf1

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

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 call- ing 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-checking takes place.)
RETURN VALUES
If an error condition occurs, this routine returns an integer value indicating 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)
Related Man Pages
pthread_rwlock_rdlock(3t) - hpux
pthread_rwlock_tryrdlock(3t) - hpux
pthread_rwlock_init(3) - osf1
pthread_rwlock_tryrdlock(3) - osf1
pthread_rwlock_wrlock(3) - osf1
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