scheduler-map.cc
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1994 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Computer Systems
- * Engineering Group at Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
- #include "config.h"
- #ifdef HAVE_STL
- // Event Scheduler using the standard library std::set
- // Contributed by George F. Riley, Georgia Tech. Spring 2002
- #include <stdio.h>
- #include <set>
- #include "scheduler.h"
- class MapScheduler : public Scheduler {
- public:
- MapScheduler();
- ~MapScheduler();
- public:
- void cancel(Event*);
- void insert(Event*);
- Event* lookup(scheduler_uid_t uid);
- Event* deque();
- const Event *head() { return *EventQueue_.begin(); }
- private:
- struct event_less_adapter {
- bool operator()(const Event *e1, const Event *e2) const
- {
- return e1->time_ < e2->time_ ||
- (e1->time_ == e2->time_ && e1->uid_ < e2->uid_); // for FIFO
- }
- };
- typedef set<Event *, event_less_adapter> EventQueue_t;
- EventQueue_t EventQueue_; // The actual event list
- };
- static class MapSchedulerClass : public TclClass {
- public:
- MapSchedulerClass() : TclClass("Scheduler/Map") {}
- TclObject* create(int /* argc */, const char*const* /* argv */) {
- return (new MapScheduler);
- }
- } class_stl_sched;
- MapScheduler::MapScheduler()
- {
- }
- MapScheduler::~MapScheduler()
- {
- }
- void MapScheduler::cancel(Event* p)
- {
- EventQueue_t::iterator eIT = EventQueue_.find(p);
- if (eIT != EventQueue_.end()) {
- EventQueue_.erase(eIT);
- p->uid_ = -p->uid_; // Negate the uid for reuse
- }
- }
- void MapScheduler::insert(Event* p)
- {
- EventQueue_.insert(p);
- }
- Event* MapScheduler::lookup(scheduler_uid_t uid) // look for event
- {
- for (EventQueue_t::iterator eIT = EventQueue_.begin();
- eIT != EventQueue_.end();
- ++eIT) {
- if ((*eIT)->uid_ == uid)
- return (*eIT);
- }
- return 0;
- }
- Event* MapScheduler::deque()
- {
- EventQueue_t::iterator eIT = EventQueue_.begin();
- if (eIT == EventQueue_.end())
- return 0;
- EventQueue_.erase(eIT);
- return *eIT;
- }
- #endif // HAVE_STL