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dat_evd_query(3dat) [opensolaris man page]

dat_evd_query(3DAT)				     Direct Access Transport Library Functions				       dat_evd_query(3DAT)

NAME
dat_evd_query - provide parameters of the Event Dispatcher, SYNOPSIS
cc [ flag... ] file... -ldat [ library... ] #include <dat/udat.h> DAT_RETURN dat_evd_query ( IN DAT_EVD_HANDLE evd_handle, IN DAT_EVD_PARAM_MASK evd_param_mask, OUT DAT_EVD_PARAM *evd_param ) PARAMETERS
evd_handle Handle for an instance of Event Dispatcher. evd_param_mask Mask for EVD parameters evd_param Pointer to a Consumer-allocated structure that the Provider fills for Consumer-requested parameters. DESCRIPTION
The dat_evd_query() function provides to the Consumer parameters of the Event Dispatcher, including the state of the EVD (enabled/dis- abled). The Consumer passes in a pointer to the Consumer-allocated structures for EVD parameters that the Provider fills. The evd_param_mask parameter allows Consumers to specify which parameters to query. The Provider returns values for evd_param_mask requested parameters. The Provider can return values for any of the other parameters. RETURN VALUES
DAT_SUCCESS The operation was successful. DAT_INVALID_HANDLE The evd_handle parameter is invalid. DAT_INVALID_PARAMETER The evd_param_mask 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 |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
libdat(3LIB), attributes(5) SunOS 5.11 16 Jul 2004 dat_evd_query(3DAT)

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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)
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