dat_evd_set_unwaitable(3DAT) Direct Access Transport Library Functions dat_evd_set_unwaitable(3DAT)
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 over-
flow; 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 TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard: uDAPL, 1.1, 1.2 |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
dat_evd_clear_unwaitable(3DAT), dat_evd_dequeue(3DAT), dat_evd_query(3DAT), dat_evd_wait(3DAT), libdat(3LIB), attributes(5)
SunOS 5.10 16 Jul 2004 dat_evd_set_unwaitable(3DAT)