difftimer.cc
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- /*
- * Copyright (C) 2004-2005 by the University of Southern California
- * $Id: difftimer.cc,v 1.4 2005/09/13 20:47:34 johnh Exp $
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- *
- * The copyright of this module includes the following
- * linking-with-specific-other-licenses addition:
- *
- * In addition, as a special exception, the copyright holders of
- * this module give you permission to combine (via static or
- * dynamic linking) this module with free software programs or
- * libraries that are released under the GNU LGPL and with code
- * included in the standard release of ns-2 under the Apache 2.0
- * license or under otherwise-compatible licenses with advertising
- * requirements (or modified versions of such code, with unchanged
- * license). You may copy and distribute such a system following the
- * terms of the GNU GPL for this module and the licenses of the
- * other code concerned, provided that you include the source code of
- * that other code when and as the GNU GPL requires distribution of
- * source code.
- *
- * Note that people who make modified versions of this module
- * are not obligated to grant this special exception for their
- * modified versions; it is their choice whether to do so. The GNU
- * General Public License gives permission to release a modified
- * version without this exception; this exception also makes it
- * possible to release a modified version which carries forward this
- * exception.
- *
- */
- //
- // Diffusion-event handler class, Padma, nov 2001.
- #ifdef NS_DIFFUSION
- #include "difftimer.h"
- #include "diffagent.h"
- #include "diffrtg.h"
- DiffEvent::DiffEvent(d_handle hdl, void *payload, int time) {
- handle_ = hdl;
- payload_ = payload;
- GetTime(&tv_);
- TimevalAddusecs(&tv_, time*1000);
- }
- void DiffEventQueue::eqAddAfter(d_handle hdl, void *payload, int delay_msec) {
- DiffEvent* de;
-
- de = new DiffEvent(hdl, payload, delay_msec);
- DiffEventHandler *dh = timerHandler_;
- double delay = ((double)delay_msec)/1000; //convert msec to sec
-
- (void)Scheduler::instance().schedule(dh, de, delay);
- scheduler_uid_t uid = ((Event *)de)->uid_;
-
- setUID(hdl, uid);
- }
- DiffEvent *DiffEventQueue::eqFindEvent(d_handle hdl) {
- scheduler_uid_t uid = getUID(hdl);
- if (uid != -1) {
- Event *p = Scheduler::instance().lookup(uid);
- if (p != 0) {
- return ((DiffEvent *)p);
- } else {
- fprintf(stderr, "Error: Can't find event in scheduler queuen");
- return NULL;
- }
- } else {
- fprintf(stderr, "Error: Can't find event in uidmap!n");
- return NULL;
- }
- }
- bool DiffEventQueue::eqRemove(d_handle hdl) {
- // first lookup UID
- scheduler_uid_t uid = getUID(hdl);
- if (uid != -1) {
- // next look for event in scheduler queue
- Event *p = Scheduler::instance().lookup(uid);
- if (p != 0) {
- // remove event from scheduler
- Scheduler::instance().cancel(p);
- TimerEntry* te = (TimerEntry *)((DiffEvent *)p)->payload();
- delete te;
- delete p;
- return 1;
- } else {
- fprintf(stderr, "Error: Can't find event in scheduler queuen");
- return 0;
- }
- } else {
- fprintf(stderr, "Error: Can't find event in uidmap!n");
- return 0;
- }
- }
- // sets value of UID and matching handle into uidmap
- void DiffEventQueue::setUID(d_handle hdl, scheduler_uid_t uid) {
- MapEntry *me = new MapEntry;
- me->hdl_ = hdl;
- me->uid_ = uid;
- uidmap_.push_back(me);
- }
- // finds UID for matching handle; removes entry from uidmap and returns uid
- scheduler_uid_t DiffEventQueue::getUID(d_handle hdl) {
- UIDMap_t::iterator itr;
- MapEntry* entry;
- for (itr = uidmap_.begin(); itr != uidmap_.end(); ++itr) {
- entry = *itr;
- if (entry->hdl_ == hdl) { // found handle
- // don't need this entry, take it out of list
- scheduler_uid_t uid = entry->uid_;
- itr = uidmap_.erase(itr);
- delete entry;
- return uid;
- }
- }
- return (-1);
- }
- // event handler that gets called at expiry time of event
- void DiffEventHandler::handle(Event *e) {
- DiffEvent *de = (DiffEvent *)e;
-
- d_handle hdl = de->getHandle();
- queue_->getUID(hdl); // only removes entry from uidmap
- a_->diffTimeout(de);
- }
- #endif // NS