home *** CD-ROM | disk | FTP | other *** search
- /*
- * $RCSfile: initializeLinks.c,v $
- * $Revision: 1.1.1.1 $
- * $Date: 1996/05/04 21:55:54 $
- */
- /**********************************************************************
- * EXODUS Database Toolkit Software
- * Copyright (c) 1991 Computer Sciences Department, University of
- * Wisconsin -- Madison
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * THE COMPUTER SCIENCES DEPARTMENT OF THE UNIVERSITY OF WISCONSIN --
- * MADISON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.
- * THE DEPARTMENT DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
- * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * The EXODUS Project Group requests users of this software to return
- * any improvements or extensions that they make to:
- *
- * EXODUS Project Group
- * c/o David J. DeWitt and Michael J. Carey
- * Computer Sciences Department
- * University of Wisconsin -- Madison
- * Madison, WI 53706
- *
- * or exodus@cs.wisc.edu
- *
- * In addition, the EXODUS Project Group requests that users grant the
- * Computer Sciences Department rights to redistribute these changes.
- **********************************************************************/
-
- #include "sysdefs.h"
- #include "ess.h"
- #include "checking.h"
- #include "trace.h"
- #include "error.h"
- #include "list.h"
- #include "pool.h"
- #include "tid.h"
- #include "io.h"
- #include "lock.h"
- #include "object.h"
- #include "msgdefs.h"
- #include "thread.h"
- #include "semaphore.h"
- #include "link.h"
- #include "bitvec.h"
- #include "msgvector.h"
- #include "volume.h"
- #include "msg_funcs.h"
- #include "disk_globals.h"
- #include "io_globals.h"
- #include "msg_globals.h"
-
-
- void
- initializeLinks ()
-
- {
-
- register LINK *link;
- register int i;
-
-
- TRACE(TR_MSG, TR_LEVEL_1);
-
- /*
- * Base the number of links on the max number of clients
- * plus the max number of volumes, + 5 for safety.
- * The absolute limit is the max for the system.
- */
- NumLinks = NumClients + NumVolumes + 5;
- {
- #ifdef hpux
- int mx = _POSIX_OPEN_MAX;
- #else
- int mx = getdtablesize();
- #endif hpux
-
- if(NumLinks > mx) NumLinks = mx;
- }
-
-
- /*
- * attempt to allocate space for the messages
- */
- if ((Links = link = (LINK *) malloc(sizeof(LINK) * NumLinks)) == NULL) {
-
- SM_ERROR(TYPE_FATAL, esmMALLOCFAILED);
- }
-
- /*
- * initialize the lists
- */
- initializeList( &FreeLinks );
- initializeList( &UsedLinks );
-
- /*
- * initialize the links
- */
- for (i = 0; i < NumLinks; i++, link++) {
-
- link->id = i;
- link->flags = LINK_FREE;
- initializeListElement( &(link->list), (char *) link );
- listEnq( &FreeLinks, &(link->list) );
- initializeList( &(link->tcbList) );
- initializeList( &(link->volList) );
- initializeList( &(link->transList) );
- initializeList( &(link->resourceList) );
- link->lastForceMark = 0;
- }
- }
-