src/sim/ticked_object.cc

   1 /*
   2  * Copyright (c) 2013-2014 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions are
  16  * met: redistributions of source code must retain the above copyright
  17  * notice, this list of conditions and the following disclaimer;
  18  * redistributions in binary form must reproduce the above copyright
  19  * notice, this list of conditions and the following disclaimer in the
  20  * documentation and/or other materials provided with the distribution;
  21  * neither the name of the copyright holders nor the names of its
  22  * contributors may be used to endorse or promote products derived from
  23  * this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  * Authors: Andrew Bardsley
  38  */
  39
  40 #include "sim/ticked_object.hh"
  41
  42 Ticked::Ticked(ClockedObject &object_,
  43     Stats::Scalar *imported_num_cycles,
  44     Event::Priority priority) :
  45     object(object_),
  46     event(*this, priority),
  47     running(false),
  48     lastStopped(0),
  49     /* Allocate numCycles if an external stat wasn't passed in */
  50     numCyclesLocal((imported_num_cycles ? NULL : new Stats::Scalar)),
  51     numCycles((imported_num_cycles ? *imported_num_cycles :
  52         *numCyclesLocal))
  53 { }
  54
  55 void
  56 Ticked::regStats()
  57 {
  58     if (numCyclesLocal) {
  59         numCycles
  60             .name(object.name() + ".tickCycles")
  61             .desc("Number of cycles that the object ticked or was stopped");
  62     }
  63
  64     tickCycles
  65         .name(object.name() + ".tickCycles")
  66         .desc("Number of cycles that the object actually ticked");
  67
  68     idleCycles
  69         .name(object.name() + ".idleCycles")
  70         .desc("Total number of cycles that the object has spent stopped");
  71     idleCycles = numCycles - tickCycles;
  72 }
  73
  74 void
  75 Ticked::serialize(std::ostream &os)
  76 {
  77     uint64_t lastStoppedUint = lastStopped;
  78
  79     paramOut(os, "lastStopped", lastStoppedUint);
  80 }
  81
  82 void
  83 Ticked::unserialize(Checkpoint *cp, const std::string &section)
  84 {
  85     uint64_t lastStoppedUint;
  86
  87     paramIn(cp, section, "lastStopped", lastStoppedUint);
  88
  89     lastStopped = Cycles(lastStoppedUint);
  90 }
  91
  92 TickedObject::TickedObject(TickedObjectParams *params,
  93     Event::Priority priority) :
  94     ClockedObject(params),
  95     /* Make numCycles in Ticked */
  96     Ticked(*this, NULL, priority)
  97 { }
  98
  99 void
 100 TickedObject::regStats()
 101 {
 102     Ticked::regStats();
 103 }
 104
 105 void
 106 TickedObject::serialize(std::ostream &os)
 107 {
 108     Ticked::serialize(os);
 109     ClockedObject::serialize(os);
 110 }
 111 void
 112 TickedObject::unserialize(Checkpoint *cp, const std::string &section)
 113 {
 114     Ticked::unserialize(cp, section);
 115     ClockedObject::unserialize(cp, section);
 116 }