eventq.cc (7452:f98fe16f50ee) eventq.cc (7823:dac01f14f20f)
1/*
2 * Copyright (c) 2000-2005 The Regents of The University of Michigan
3 * Copyright (c) 2008 The Hewlett-Packard Development Company
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Authors: Steve Reinhardt
30 * Nathan Binkert
31 * Steve Raasch
32 */
33
34#include <cassert>
35#include <iostream>
36#include <string>
37#include <vector>
38
39#include "base/hashmap.hh"
40#include "base/misc.hh"
41#include "base/trace.hh"
42#include "cpu/smt.hh"
43#include "sim/core.hh"
44#include "sim/eventq.hh"
45
46using namespace std;
47
48//
49// Main Event Queue
50//
51// Events on this queue are processed at the *beginning* of each
52// cycle, before the pipeline simulation is performed.
53//
54EventQueue mainEventQueue("Main Event Queue");
55
56#ifndef NDEBUG
57Counter Event::instanceCounter = 0;
58#endif
59
60Event::~Event()
61{
62 assert(!scheduled());
63 flags = 0;
64}
65
66const std::string
67Event::name() const
68{
69#ifndef NDEBUG
70 return csprintf("Event_%d", instance);
71#else
72 return csprintf("Event_%x", (uintptr_t)this);
73#endif
74}
75
76
77Event *
78Event::insertBefore(Event *event, Event *curr)
79{
80 // Either way, event will be the top element in the 'in bin' list
81 // which is the pointer we need in order to look into the list, so
82 // we need to insert that into the bin list.
83 if (!curr || *event < *curr) {
84 // Insert the event before the current list since it is in the future.
85 event->nextBin = curr;
86 event->nextInBin = NULL;
87 } else {
88 // Since we're on the correct list, we need to point to the next list
89 event->nextBin = curr->nextBin; // curr->nextBin can now become stale
90
91 // Insert event at the top of the stack
92 event->nextInBin = curr;
93 }
94
95 return event;
96}
97
98void
99EventQueue::insert(Event *event)
100{
101 // Deal with the head case
102 if (!head || *event <= *head) {
103 head = Event::insertBefore(event, head);
104 return;
105 }
106
107 // Figure out either which 'in bin' list we are on, or where a new list
108 // needs to be inserted
109 Event *prev = head;
110 Event *curr = head->nextBin;
111 while (curr && *curr < *event) {
112 prev = curr;
113 curr = curr->nextBin;
114 }
115
116 // Note: this operation may render all nextBin pointers on the
117 // prev 'in bin' list stale (except for the top one)
118 prev->nextBin = Event::insertBefore(event, curr);
119}
120
121Event *
122Event::removeItem(Event *event, Event *top)
123{
124 Event *curr = top;
125 Event *next = top->nextInBin;
126
127 // if we removed the top item, we need to handle things specially
128 // and just remove the top item, fixing up the next bin pointer of
129 // the new top item
130 if (event == top) {
131 if (!next)
132 return top->nextBin;
133 next->nextBin = top->nextBin;
134 return next;
135 }
136
137 // Since we already checked the current element, we're going to
138 // keep checking event against the next element.
139 while (event != next) {
140 if (!next)
141 panic("event not found!");
142
143 curr = next;
144 next = next->nextInBin;
145 }
146
147 // remove next from the 'in bin' list since it's what we're looking for
148 curr->nextInBin = next->nextInBin;
149 return top;
150}
151
152void
153EventQueue::remove(Event *event)
154{
155 if (head == NULL)
156 panic("event not found!");
157
158 // deal with an event on the head's 'in bin' list (event has the same
159 // time as the head)
160 if (*head == *event) {
161 head = Event::removeItem(event, head);
162 return;
163 }
164
165 // Find the 'in bin' list that this event belongs on
166 Event *prev = head;
167 Event *curr = head->nextBin;
168 while (curr && *curr < *event) {
169 prev = curr;
170 curr = curr->nextBin;
171 }
172
173 if (!curr || *curr != *event)
174 panic("event not found!");
175
176 // curr points to the top item of the the correct 'in bin' list, when
177 // we remove an item, it returns the new top item (which may be
178 // unchanged)
179 prev->nextBin = Event::removeItem(event, curr);
180}
181
182Event *
183EventQueue::serviceOne()
184{
185 Event *event = head;
186 Event *next = head->nextInBin;
187 event->flags.clear(Event::Scheduled);
188
189 if (next) {
190 // update the next bin pointer since it could be stale
191 next->nextBin = head->nextBin;
192
193 // pop the stack
194 head = next;
195 } else {
196 // this was the only element on the 'in bin' list, so get rid of
197 // the 'in bin' list and point to the next bin list
198 head = head->nextBin;
199 }
200
201 // handle action
202 if (!event->squashed()) {
203 event->process();
204 if (event->isExitEvent()) {
205 assert(!event->flags.isSet(Event::AutoDelete)); // would be silly
206 return event;
207 }
208 } else {
209 event->flags.clear(Event::Squashed);
210 }
211
212 if (event->flags.isSet(Event::AutoDelete) && !event->scheduled())
213 delete event;
214
215 return NULL;
216}
217
218void
219Event::serialize(std::ostream &os)
220{
221 SERIALIZE_SCALAR(_when);
222 SERIALIZE_SCALAR(_priority);
223 short _flags = flags;
224 SERIALIZE_SCALAR(_flags);
225}
226
227void
228Event::unserialize(Checkpoint *cp, const string &section)
229{
230 if (scheduled())
231 mainEventQueue.deschedule(this);
232
233 UNSERIALIZE_SCALAR(_when);
234 UNSERIALIZE_SCALAR(_priority);
235
236 short _flags;
237 UNSERIALIZE_SCALAR(_flags);
238
239 // Old checkpoints had no concept of the Initialized flag
240 // so restoring from old checkpoints always fail.
241 // Events are initialized on construction but original code
242 // "flags = _flags" would just overwrite the initialization.
243 // So, read in the checkpoint flags, but then set the Initialized
244 // flag on top of it in order to avoid failures.
245 assert(initialized());
246 flags = _flags;
247 flags.set(Initialized);
248
249 // need to see if original event was in a scheduled, unsquashed
250 // state, but don't want to restore those flags in the current
251 // object itself (since they aren't immediately true)
252 bool wasScheduled = flags.isSet(Scheduled) && !flags.isSet(Squashed);
253 flags.clear(Squashed | Scheduled);
254
255 if (wasScheduled) {
256 DPRINTF(Config, "rescheduling at %d\n", _when);
257 mainEventQueue.schedule(this, _when);
258 }
259}
260
261void
262EventQueue::serialize(ostream &os)
263{
264 std::list<Event *> eventPtrs;
265
266 int numEvents = 0;
267 Event *nextBin = head;
268 while (nextBin) {
269 Event *nextInBin = nextBin;
270
271 while (nextInBin) {
272 if (nextInBin->flags.isSet(Event::AutoSerialize)) {
273 eventPtrs.push_back(nextInBin);
274 paramOut(os, csprintf("event%d", numEvents++),
275 nextInBin->name());
276 }
277 nextInBin = nextInBin->nextInBin;
278 }
279
280 nextBin = nextBin->nextBin;
281 }
282
283 SERIALIZE_SCALAR(numEvents);
284
285 for (std::list<Event *>::iterator it = eventPtrs.begin();
286 it != eventPtrs.end(); ++it) {
287 (*it)->nameOut(os);
288 (*it)->serialize(os);
289 }
290}
291
292void
293EventQueue::unserialize(Checkpoint *cp, const std::string &section)
294{
295 int numEvents;
296 UNSERIALIZE_SCALAR(numEvents);
297
298 std::string eventName;
299 for (int i = 0; i < numEvents; i++) {
300 // get the pointer value associated with the event
301 paramIn(cp, section, csprintf("event%d", i), eventName);
302
303 // create the event based on its pointer value
304 Serializable::create(cp, eventName);
305 }
306}
307
308void
309EventQueue::dump() const
310{
311 cprintf("============================================================\n");
1/*
2 * Copyright (c) 2000-2005 The Regents of The University of Michigan
3 * Copyright (c) 2008 The Hewlett-Packard Development Company
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Authors: Steve Reinhardt
30 * Nathan Binkert
31 * Steve Raasch
32 */
33
34#include <cassert>
35#include <iostream>
36#include <string>
37#include <vector>
38
39#include "base/hashmap.hh"
40#include "base/misc.hh"
41#include "base/trace.hh"
42#include "cpu/smt.hh"
43#include "sim/core.hh"
44#include "sim/eventq.hh"
45
46using namespace std;
47
48//
49// Main Event Queue
50//
51// Events on this queue are processed at the *beginning* of each
52// cycle, before the pipeline simulation is performed.
53//
54EventQueue mainEventQueue("Main Event Queue");
55
56#ifndef NDEBUG
57Counter Event::instanceCounter = 0;
58#endif
59
60Event::~Event()
61{
62 assert(!scheduled());
63 flags = 0;
64}
65
66const std::string
67Event::name() const
68{
69#ifndef NDEBUG
70 return csprintf("Event_%d", instance);
71#else
72 return csprintf("Event_%x", (uintptr_t)this);
73#endif
74}
75
76
77Event *
78Event::insertBefore(Event *event, Event *curr)
79{
80 // Either way, event will be the top element in the 'in bin' list
81 // which is the pointer we need in order to look into the list, so
82 // we need to insert that into the bin list.
83 if (!curr || *event < *curr) {
84 // Insert the event before the current list since it is in the future.
85 event->nextBin = curr;
86 event->nextInBin = NULL;
87 } else {
88 // Since we're on the correct list, we need to point to the next list
89 event->nextBin = curr->nextBin; // curr->nextBin can now become stale
90
91 // Insert event at the top of the stack
92 event->nextInBin = curr;
93 }
94
95 return event;
96}
97
98void
99EventQueue::insert(Event *event)
100{
101 // Deal with the head case
102 if (!head || *event <= *head) {
103 head = Event::insertBefore(event, head);
104 return;
105 }
106
107 // Figure out either which 'in bin' list we are on, or where a new list
108 // needs to be inserted
109 Event *prev = head;
110 Event *curr = head->nextBin;
111 while (curr && *curr < *event) {
112 prev = curr;
113 curr = curr->nextBin;
114 }
115
116 // Note: this operation may render all nextBin pointers on the
117 // prev 'in bin' list stale (except for the top one)
118 prev->nextBin = Event::insertBefore(event, curr);
119}
120
121Event *
122Event::removeItem(Event *event, Event *top)
123{
124 Event *curr = top;
125 Event *next = top->nextInBin;
126
127 // if we removed the top item, we need to handle things specially
128 // and just remove the top item, fixing up the next bin pointer of
129 // the new top item
130 if (event == top) {
131 if (!next)
132 return top->nextBin;
133 next->nextBin = top->nextBin;
134 return next;
135 }
136
137 // Since we already checked the current element, we're going to
138 // keep checking event against the next element.
139 while (event != next) {
140 if (!next)
141 panic("event not found!");
142
143 curr = next;
144 next = next->nextInBin;
145 }
146
147 // remove next from the 'in bin' list since it's what we're looking for
148 curr->nextInBin = next->nextInBin;
149 return top;
150}
151
152void
153EventQueue::remove(Event *event)
154{
155 if (head == NULL)
156 panic("event not found!");
157
158 // deal with an event on the head's 'in bin' list (event has the same
159 // time as the head)
160 if (*head == *event) {
161 head = Event::removeItem(event, head);
162 return;
163 }
164
165 // Find the 'in bin' list that this event belongs on
166 Event *prev = head;
167 Event *curr = head->nextBin;
168 while (curr && *curr < *event) {
169 prev = curr;
170 curr = curr->nextBin;
171 }
172
173 if (!curr || *curr != *event)
174 panic("event not found!");
175
176 // curr points to the top item of the the correct 'in bin' list, when
177 // we remove an item, it returns the new top item (which may be
178 // unchanged)
179 prev->nextBin = Event::removeItem(event, curr);
180}
181
182Event *
183EventQueue::serviceOne()
184{
185 Event *event = head;
186 Event *next = head->nextInBin;
187 event->flags.clear(Event::Scheduled);
188
189 if (next) {
190 // update the next bin pointer since it could be stale
191 next->nextBin = head->nextBin;
192
193 // pop the stack
194 head = next;
195 } else {
196 // this was the only element on the 'in bin' list, so get rid of
197 // the 'in bin' list and point to the next bin list
198 head = head->nextBin;
199 }
200
201 // handle action
202 if (!event->squashed()) {
203 event->process();
204 if (event->isExitEvent()) {
205 assert(!event->flags.isSet(Event::AutoDelete)); // would be silly
206 return event;
207 }
208 } else {
209 event->flags.clear(Event::Squashed);
210 }
211
212 if (event->flags.isSet(Event::AutoDelete) && !event->scheduled())
213 delete event;
214
215 return NULL;
216}
217
218void
219Event::serialize(std::ostream &os)
220{
221 SERIALIZE_SCALAR(_when);
222 SERIALIZE_SCALAR(_priority);
223 short _flags = flags;
224 SERIALIZE_SCALAR(_flags);
225}
226
227void
228Event::unserialize(Checkpoint *cp, const string &section)
229{
230 if (scheduled())
231 mainEventQueue.deschedule(this);
232
233 UNSERIALIZE_SCALAR(_when);
234 UNSERIALIZE_SCALAR(_priority);
235
236 short _flags;
237 UNSERIALIZE_SCALAR(_flags);
238
239 // Old checkpoints had no concept of the Initialized flag
240 // so restoring from old checkpoints always fail.
241 // Events are initialized on construction but original code
242 // "flags = _flags" would just overwrite the initialization.
243 // So, read in the checkpoint flags, but then set the Initialized
244 // flag on top of it in order to avoid failures.
245 assert(initialized());
246 flags = _flags;
247 flags.set(Initialized);
248
249 // need to see if original event was in a scheduled, unsquashed
250 // state, but don't want to restore those flags in the current
251 // object itself (since they aren't immediately true)
252 bool wasScheduled = flags.isSet(Scheduled) && !flags.isSet(Squashed);
253 flags.clear(Squashed | Scheduled);
254
255 if (wasScheduled) {
256 DPRINTF(Config, "rescheduling at %d\n", _when);
257 mainEventQueue.schedule(this, _when);
258 }
259}
260
261void
262EventQueue::serialize(ostream &os)
263{
264 std::list<Event *> eventPtrs;
265
266 int numEvents = 0;
267 Event *nextBin = head;
268 while (nextBin) {
269 Event *nextInBin = nextBin;
270
271 while (nextInBin) {
272 if (nextInBin->flags.isSet(Event::AutoSerialize)) {
273 eventPtrs.push_back(nextInBin);
274 paramOut(os, csprintf("event%d", numEvents++),
275 nextInBin->name());
276 }
277 nextInBin = nextInBin->nextInBin;
278 }
279
280 nextBin = nextBin->nextBin;
281 }
282
283 SERIALIZE_SCALAR(numEvents);
284
285 for (std::list<Event *>::iterator it = eventPtrs.begin();
286 it != eventPtrs.end(); ++it) {
287 (*it)->nameOut(os);
288 (*it)->serialize(os);
289 }
290}
291
292void
293EventQueue::unserialize(Checkpoint *cp, const std::string &section)
294{
295 int numEvents;
296 UNSERIALIZE_SCALAR(numEvents);
297
298 std::string eventName;
299 for (int i = 0; i < numEvents; i++) {
300 // get the pointer value associated with the event
301 paramIn(cp, section, csprintf("event%d", i), eventName);
302
303 // create the event based on its pointer value
304 Serializable::create(cp, eventName);
305 }
306}
307
308void
309EventQueue::dump() const
310{
311 cprintf("============================================================\n");
312 cprintf("EventQueue Dump (cycle %d)\n", curTick);
312 cprintf("EventQueue Dump (cycle %d)\n", curTick());
313 cprintf("------------------------------------------------------------\n");
314
315 if (empty())
316 cprintf("<No Events>\n");
317 else {
318 Event *nextBin = head;
319 while (nextBin) {
320 Event *nextInBin = nextBin;
321 while (nextInBin) {
322 nextInBin->dump();
323 nextInBin = nextInBin->nextInBin;
324 }
325
326 nextBin = nextBin->nextBin;
327 }
328 }
329
330 cprintf("============================================================\n");
331}
332
333bool
334EventQueue::debugVerify() const
335{
336 m5::hash_map<long, bool> map;
337
338 Tick time = 0;
339 short priority = 0;
340
341 Event *nextBin = head;
342 while (nextBin) {
343 Event *nextInBin = nextBin;
344 while (nextInBin) {
345 if (nextInBin->when() < time) {
346 cprintf("time goes backwards!");
347 nextInBin->dump();
348 return false;
349 } else if (nextInBin->when() == time &&
350 nextInBin->priority() < priority) {
351 cprintf("priority inverted!");
352 nextInBin->dump();
353 return false;
354 }
355
356 if (map[reinterpret_cast<long>(nextInBin)]) {
357 cprintf("Node already seen");
358 nextInBin->dump();
359 return false;
360 }
361 map[reinterpret_cast<long>(nextInBin)] = true;
362
363 time = nextInBin->when();
364 priority = nextInBin->priority();
365
366 nextInBin = nextInBin->nextInBin;
367 }
368
369 nextBin = nextBin->nextBin;
370 }
371
372 return true;
373}
374
375void
376dumpMainQueue()
377{
378 mainEventQueue.dump();
379}
380
381
382const char *
383Event::description() const
384{
385 return "generic";
386}
387
388void
389Event::trace(const char *action)
390{
391 // This DPRINTF is unconditional because calls to this function
392 // are protected by an 'if (DTRACE(Event))' in the inlined Event
393 // methods.
394 //
395 // This is just a default implementation for derived classes where
396 // it's not worth doing anything special. If you want to put a
397 // more informative message in the trace, override this method on
398 // the particular subclass where you have the information that
399 // needs to be printed.
400 DPRINTFN("%s event %s @ %d\n", description(), action, when());
401}
402
403void
404Event::dump() const
405{
406 cprintf("Event %s (%s)\n", name(), description());
407 cprintf("Flags: %#x\n", flags);
408#ifdef EVENTQ_DEBUG
409 cprintf("Created: %d\n", whenCreated);
410#endif
411 if (scheduled()) {
412#ifdef EVENTQ_DEBUG
413 cprintf("Scheduled at %d\n", whenScheduled);
414#endif
415 cprintf("Scheduled for %d, priority %d\n", when(), _priority);
416 } else {
417 cprintf("Not Scheduled\n");
418 }
419}
420
421EventQueue::EventQueue(const string &n)
422 : objName(n), head(NULL)
423{}
313 cprintf("------------------------------------------------------------\n");
314
315 if (empty())
316 cprintf("<No Events>\n");
317 else {
318 Event *nextBin = head;
319 while (nextBin) {
320 Event *nextInBin = nextBin;
321 while (nextInBin) {
322 nextInBin->dump();
323 nextInBin = nextInBin->nextInBin;
324 }
325
326 nextBin = nextBin->nextBin;
327 }
328 }
329
330 cprintf("============================================================\n");
331}
332
333bool
334EventQueue::debugVerify() const
335{
336 m5::hash_map<long, bool> map;
337
338 Tick time = 0;
339 short priority = 0;
340
341 Event *nextBin = head;
342 while (nextBin) {
343 Event *nextInBin = nextBin;
344 while (nextInBin) {
345 if (nextInBin->when() < time) {
346 cprintf("time goes backwards!");
347 nextInBin->dump();
348 return false;
349 } else if (nextInBin->when() == time &&
350 nextInBin->priority() < priority) {
351 cprintf("priority inverted!");
352 nextInBin->dump();
353 return false;
354 }
355
356 if (map[reinterpret_cast<long>(nextInBin)]) {
357 cprintf("Node already seen");
358 nextInBin->dump();
359 return false;
360 }
361 map[reinterpret_cast<long>(nextInBin)] = true;
362
363 time = nextInBin->when();
364 priority = nextInBin->priority();
365
366 nextInBin = nextInBin->nextInBin;
367 }
368
369 nextBin = nextBin->nextBin;
370 }
371
372 return true;
373}
374
375void
376dumpMainQueue()
377{
378 mainEventQueue.dump();
379}
380
381
382const char *
383Event::description() const
384{
385 return "generic";
386}
387
388void
389Event::trace(const char *action)
390{
391 // This DPRINTF is unconditional because calls to this function
392 // are protected by an 'if (DTRACE(Event))' in the inlined Event
393 // methods.
394 //
395 // This is just a default implementation for derived classes where
396 // it's not worth doing anything special. If you want to put a
397 // more informative message in the trace, override this method on
398 // the particular subclass where you have the information that
399 // needs to be printed.
400 DPRINTFN("%s event %s @ %d\n", description(), action, when());
401}
402
403void
404Event::dump() const
405{
406 cprintf("Event %s (%s)\n", name(), description());
407 cprintf("Flags: %#x\n", flags);
408#ifdef EVENTQ_DEBUG
409 cprintf("Created: %d\n", whenCreated);
410#endif
411 if (scheduled()) {
412#ifdef EVENTQ_DEBUG
413 cprintf("Scheduled at %d\n", whenScheduled);
414#endif
415 cprintf("Scheduled for %d, priority %d\n", when(), _priority);
416 } else {
417 cprintf("Not Scheduled\n");
418 }
419}
420
421EventQueue::EventQueue(const string &n)
422 : objName(n), head(NULL)
423{}