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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 queue\n");
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 queue\n");
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
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