man/man3dat/dat_evd_set_unwaitable.3dat

         te
 This manual page is derived from the DAT/uDAPL 1.2 specification.
 Portions Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
 The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
 You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
 When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
 dat_evd_set_unwaitable 3DAT "16 Jul 2004" "SunOS 5.11" "Direct Access Transport Library Functions"
 NAME
dat_evd_set_unwaitable - transition the Event Dispatcher into an unwaitable
state
 SYNOPSIS

cc [ flag.\|.\|. ] file.\|.\|. -ldat [ library.\|.\|. ]
#include <dat/udat.h>

DAT_RETURN
 dat_evd_set_unwaitable(
 IN DAT_EVD_HANDLE evd_handle
 )


 PARAMETERS

evd_handle

Handle for an instance of Event Dispatcher.


 DESCRIPTION

The dat_evd_set_unwaitable() transitions the Event Dispatcher into an
unwaitable state. In this state, calls to dat_evd_wait(3DAT) return
synchronously with a DAT_INVALID_STATE error, and threads already blocked
in dat_evd_wait() are awakened and return with a DAT_INVALID_STATE
error without any further action by the Consumer. The actual state of the Event
Dispatcher is accessible through dat_evd_query(3DAT) and is
DAT_EVD_UNWAITABLE after the return of this operation.

This call does not affect a CNO associated with this EVD at all. Events
arriving on the EVD after it is set unwaitable still trigger the CNO (if
appropriate), and can be retrieved with dat_evd_dequeue(3DAT). Because
events can arrive normally on the EVD, the EVD might overflow; the Consumer is
expected to protect against this possibility.
 RETURN VALUES

DAT_SUCCESS

The operation was successful.


DAT_INVALID_HANDLE

The evd_handle parameter is invalid.


 ATTRIBUTES

See attributes(5) for descriptions of the following attributes:


ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityStandard: uDAPL, 1.1, 1.2
MT-LevelSafe


 SEE ALSO

dat_evd_clear_unwaitable(3DAT), dat_evd_dequeue(3DAT),
dat_evd_query(3DAT), dat_evd_wait(3DAT), libdat(3LIB),
attributes(5)

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Standard: uDAPL, 1.1, 1.2
MT-Level	Safe