eventq_impl.hh revision 9356:b279bad40aa3 
1/*
2 * Copyright (c) 2012 The Regents of The University of Michigan
3 * Copyright (c) 2012 Mark D. Hill and David A. Wood
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 *          Nilay Vaish
32 */
33
34#ifndef __SIM_EVENTQ_IMPL_HH__
35#define __SIM_EVENTQ_IMPL_HH__
36
37#include "base/trace.hh"
38#include "sim/eventq.hh"
39
40inline void
41EventQueue::schedule(Event *event, Tick when)
42{
43    assert(when >= getCurTick());
44    assert(!event->scheduled());
45    assert(event->initialized());
46
47    event->setWhen(when, this);
48    insert(event);
49    event->flags.set(Event::Scheduled);
50    if (this == &mainEventQueue)
51        event->flags.set(Event::IsMainQueue);
52    else
53        event->flags.clear(Event::IsMainQueue);
54
55    if (DTRACE(Event))
56        event->trace("scheduled");
57}
58
59inline void
60EventQueue::deschedule(Event *event)
61{
62    assert(event->scheduled());
63    assert(event->initialized());
64
65    remove(event);
66
67    event->flags.clear(Event::Squashed);
68    event->flags.clear(Event::Scheduled);
69
70    if (DTRACE(Event))
71        event->trace("descheduled");
72
73    if (event->flags.isSet(Event::AutoDelete))
74        delete event;
75}
76
77inline void
78EventQueue::reschedule(Event *event, Tick when, bool always)
79{
80    assert(when >= getCurTick());
81    assert(always || event->scheduled());
82    assert(event->initialized());
83
84    if (event->scheduled())
85        remove(event);
86
87    event->setWhen(when, this);
88    insert(event);
89    event->flags.clear(Event::Squashed);
90    event->flags.set(Event::Scheduled);
91    if (this == &mainEventQueue)
92        event->flags.set(Event::IsMainQueue);
93    else
94        event->flags.clear(Event::IsMainQueue);
95
96    if (DTRACE(Event))
97        event->trace("rescheduled");
98}
99
100#endif // __SIM_EVENTQ_IMPL_HH__
101