osf1 man page for tis_read_trylock

Query: tis_read_trylock

OS: osf1

Section: 3

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

tis_read_trylock(3)					     Library Functions Manual					       tis_read_trylock(3)

NAME
tis_read_trylock - Attempts to acquire a read-write lock for read access. Does not wait if the lock cannot be immediately granted.
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <tis.h> int tis_read_trylock( tis_rwlock_t *lock);
STANDARDS
None
PARAMETERS
Address of the read-write lock to be acquired.
DESCRIPTION
This routine attempts to acquire a read-write lock for read access. If the lock cannot be granted, the routine returns without waiting. When a thread calls this routine, an attempt is made to immediately acquire the lock for read access. If the lock is acquired, zero (0) is returned. If a holder of the lock for write access exists, [EBUSY] is returned. If the lock cannot be acquired for read access immediately, the calling program does not wait for the lock to be released.
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 was acquired. The lock is being held for write access. The lock for read access was not acquired.
ERRORS
None
RELATED INFORMATION
Functions: tis_read_lock(3), tis_read_unlock(3), tis_rwlock_destroy(3), tis_rwlock_init(3), tis_write_lock(3), tis_write_trylock(3), tis_write_unlock(3) Manuals: Guide to DECthreads and Programmer's Guide delim off tis_read_trylock(3)
Related Man Pages
pthread_rwlock_destroy(3) - osf1
pthread_rwlock_tryrdlock(3) - osf1
tis_read_trylock(3) - osf1
tis_write_lock(3) - osf1
tis_write_unlock(3) - osf1
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