75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
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/************************************************************************/
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/* SISCO SOFTWARE MODULE HEADER *****************************************/
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/************************************************************************/
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/* (c) Copyright Systems Integration Specialists Company, Inc., */
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/* 2003 All Rights Reserved */
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/* */
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/* MODULE NAME : event2.c */
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/* PRODUCT(S) : MMSEASE-LITE */
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/* */
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/* MODULE DESCRIPTION : */
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/* Event handling function. This function may be used ONLY if */
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/* the the POLLING version of the "gensock2" sockets interface is */
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/* used (i.e. gensock2.c is compiled with GENSOCK_THREAD_SUPPORT */
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/* NOT defined). */
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/* */
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/* GLOBAL FUNCTIONS DEFINED IN THIS MODULE : */
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/* wait_any_event () */
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/* */
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/* MODIFICATION LOG : */
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/* Date Who Rev Comments */
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/* -------- --- ------ ------------------------------------------- */
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/* 01/30/07 JRB 04 Shorten sleep to avoid delay detecting connect.*/
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/* 12/11/06 JRB 03 Wait for Subnetwork events too. */
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/* 11/01/06 JRB 02 Call sMsSleep when no connections, */
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/* so we don't hog the CPU. */
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/* 07/10/03 JRB 01 Created */
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/************************************************************************/
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#include "glbtypes.h"
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#include "sysincs.h"
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#include "mmsdefs.h"
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#include "gensock2.h"
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#include "clnp_sne.h" /* for "Subnetwork" event stuff */
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/************************************************************************/
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/* wait_any_event */
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/* Wait for "socket" events OR "Subnetwork" events. */
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/* NOTE: See comments about "PORTING" if this function needs */
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/* to wait on "other" handles. */
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/************************************************************************/
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ST_VOID wait_any_event (ST_LONG max_ms_delay)
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{
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GENSOCK_FD_SET sockFds;
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int nfds;
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struct timeval selectTimeout;
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/* This function assumes only one group of sockets to process. */
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sockInitAllFds (&sockFds);
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/* If Subnetwork handle "hPktSock" is valid, add it to list. */
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if (hPktSock >= 0)
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sockAddReadFds (&sockFds, hPktSock);
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/* PORTING: Call sockAddReadFds, sockAddWriteFds, sockAddExceptFds
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* to add "other" handles on which to wait.
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*/
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if (sockFds.totalfds)
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{
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/* Convert milliseconds to seconds and microseconds */
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selectTimeout.tv_sec = max_ms_delay / 1000; /* seconds */
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selectTimeout.tv_usec = (max_ms_delay % 1000) * 1000; /* microseconds */
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nfds = select (sockFds.selectnfds, &sockFds.readfds, &sockFds.writefds, &sockFds.exceptfds, &selectTimeout);
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/* PORTING: Add code to process "other" handles. */
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}
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else
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sMsSleep (10); /* no sockets to wait on, so sleep a little to avoid hogging CPU.*/
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/* NOTE: socket events are NOT processed here. This function simply returns,
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* and the caller must call "mvl_comm_serve" to process the events.
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*/
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return;
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}
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