NAME

tis_write_unlock − Unlocks the specified read-write lock that was acquired for write access. 

LIBRARY

Standard C Library (libc.so, libc.a)

SYNOPSIS

#include <tis.h>

int   tis_write_unlock(
                       tis_rwlock_t   ∗lock);

STANDARDS

None

PARAMETERS

∗lockAddress of the read-write lock to be unlocked. 

DESCRIPTION

This routine unlocks a read-write lock that was acquired for write access. 

Upon completion of this routine, any thread waiting to acquire the lock for read access will have those acquisitions granted.  If no threads are waiting to acquire the lock for read access, then a thread waiting to acquire it for write access will have that acquisition granted. 

RETURN VALUES

If an error condition occurs, this routine returns an integer value indicating the type of error.  Possible return values are as follows:

0Successful completion. 

[EINVAL]The value specified by ∗lock is invalid. 

ERRORS

None

RELATED INFORMATION

Functions: tis_read_lock(3), tis_read_trylock(3), tis_read_unlock(3), tis_rwlock_init(3), tis_rwlock_destroy(3), tis_write_lock(3), tis_write_trylock(3)

Manuals: Guide to DECthreads and Programmer’s Guide