ticked_object.cc revision 10905:a6ca6831e775
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 42Ticked::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 55void 56Ticked::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 74void 75Ticked::serialize(CheckpointOut &cp) const 76{ 77 uint64_t lastStoppedUint = lastStopped; 78 79 paramOut(cp, "lastStopped", lastStoppedUint); 80} 81 82void 83Ticked::unserialize(CheckpointIn &cp) 84{ 85 uint64_t lastStoppedUint = 0; 86 87 /* lastStopped is optional on checkpoint restore as this object may be 88 * being restored from one which has a common base (and so possibly 89 * many common checkpointed values) but where Ticked is used in the 90 * checkpointed object but not this one. 91 * An example would be a CPU model using Ticked restores from a 92 * simple CPU without without Ticked */ 93 optParamIn(cp, "lastStopped", lastStoppedUint); 94 95 lastStopped = Cycles(lastStoppedUint); 96} 97 98TickedObject::TickedObject(TickedObjectParams *params, 99 Event::Priority priority) : 100 ClockedObject(params), 101 /* Make numCycles in Ticked */ 102 Ticked(*this, NULL, priority) 103{ } 104 105void 106TickedObject::regStats() 107{ 108 Ticked::regStats(); 109} 110 111void 112TickedObject::serialize(CheckpointOut &cp) const 113{ 114 Ticked::serialize(cp); 115 ClockedObject::serialize(cp); 116} 117void 118TickedObject::unserialize(CheckpointIn &cp) 119{ 120 Ticked::unserialize(cp); 121 ClockedObject::unserialize(cp); 122} 123