src/sim/eventq_impl.hh

   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
  40 inline void
  41 EventQueue::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
  59 inline void
  60 EventQueue::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
  77 inline void
  78 EventQueue::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__