rsm_intr_signal_postRemote Shared Memory Library Funrsm_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 occu‐
rance by calling rsm_intr_signal_wait(). A process can signal a waiting
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 seg‐
ment handle (rsm_memseg_export_handle_t) may be type cast to a void
pointer for the memseg argument. If memseg refers to an import handle,
the exporting process is signalled. If memseg refers to an export han‐
dle, all importers of that segment are signalled. The flags argument
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 segment.
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_mem‐
seg_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 ALSOrsm_memseg_get_pollfd(3RSM), attributes(5)SunOS 5.10 7 Nov 2002 rsm_intr_signal_post(3RSM)
