rsm_intr_signal_post(3RSM)			      Remote Shared Memory Library Functions				rsm_intr_signal_post(3RSM)

NAME

       rsm_intr_signal_post, rsm_intr_signal_wait - signal or wait for an event

SYNOPSIS

       cc [ flag... ] file... -lrsm [ library... ]
       #include <rsmapi.h>

       int rsm_intr_signal_post(void *memseg, uint_t flags);

       int rsm_intr_signal_wait(void *memseg, int timeout);

DESCRIPTION

       The  rsm_intr_signal_post() and	rsm_intr_signal_wait() functions are event functions that allow synchronization between importer processes
       and exporter processes.	A process may block to wait for an event occurance by calling rsm_intr_signal_wait(). A process can signal a wait-
       ing process when an event occurs by calling rsm_intr_signal_post().

       The  rsm_intr_signal_post()  function signals an event occurance. Either an import segment handle (rsm_memseg_import_handle_t) or an export
       segment handle (rsm_memseg_export_handle_t) may be type cast to a void pointer for the memseg argument. If memseg refers to an import  han-
       dle, the exporting process is signalled. If memseg refers to an export handle, all importers of that segment are signalled. The flags argu-
       ment may be set to RSM_SIGPOST_NO_ACCUMULATE; this will cause this event to be discarded if an event is already pending for the target seg-
       ment.

       The  rsm_intr_signal_wait()  function  allows a process to block and wait for an event occurance. Either an import segment handle (rsm_mem-
       seg_import_handle_t) or an export segment handle (rsm_memseg_export_handle_t) may be type cast to a void pointer for the  memseg  argument.
       The  process  blocks  for  up  to timeout milliseconds for an event to occur; if the timeout value is -1, the process blocks until an event
       occurs or until interrupted.

RETURN VALUES

       Upon successful completion, these functions return 0.  Otherwise, an error value is returned to indicate the error.

ERRORS

       The rsm_intr_signal_post() and  rsm_intr_signal_wait() functions can return the following error:

       RSMERR_BAD_SEG_HNDL     Invalid segment handle.

       The rsm_intr_signal_post() function can return the following error:

       RSMERR_CONN_ABORTED

	   Connection aborted.

       RSMERR_REMOTE_NODE_UNREACHABL

	   Remote node not reachable.

       The rsm_intr_signal_wait() function can return the following errors:

       RSMERR_INTERRUPTED     Wait interrupted.

       RSMERR_TIMEOUT	      Timer expired.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |ATTRIBUTE TYPE		     |ATTRIBUTE VALUE		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       rsm_memseg_get_pollfd(3RSM), attributes(5)

SunOS 5.11							    7 Nov 2002						rsm_intr_signal_post(3RSM)