bd228af5cf
This change changes the addresses that are printed when TrafficGen DebugFlag is enabled. Previously, hex strings were printed without a preceding 0x. This change fixes that to distinguish between decimal and hex.
113 lines
4.1 KiB
C++
113 lines
4.1 KiB
C++
/*
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* Copyright (c) 2012-2013, 2016-2017 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed here under. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cpu/testers/traffic_gen/random_gen.hh"
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#include <algorithm>
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#include "base/random.hh"
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#include "base/trace.hh"
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#include "debug/TrafficGen.hh"
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namespace gem5
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{
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void
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RandomGen::enter()
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{
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// reset the counter to zero
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dataManipulated = 0;
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}
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PacketPtr
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RandomGen::getNextPacket()
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{
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// choose if we generate a read or a write here
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bool isRead = readPercent != 0 &&
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(readPercent == 100 || random_mt.random(0, 100) < readPercent);
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assert((readPercent == 0 && !isRead) || (readPercent == 100 && isRead) ||
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readPercent != 100);
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// address of the request
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Addr addr = random_mt.random(startAddr, endAddr - 1);
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// round down to start address of block
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addr -= addr % blocksize;
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DPRINTF(TrafficGen, "RandomGen::getNextPacket: %c to addr %#x, size %d\n",
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isRead ? 'r' : 'w', addr, blocksize);
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// add the amount of data manipulated to the total
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dataManipulated += blocksize;
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// create a new request packet
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return getPacket(addr, blocksize,
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isRead ? MemCmd::ReadReq : MemCmd::WriteReq);
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}
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Tick
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RandomGen::nextPacketTick(bool elastic, Tick delay) const
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{
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// Check to see if we have reached the data limit. If dataLimit is
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// zero we do not have a data limit and therefore we will keep
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// generating requests for the entire residency in this state.
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if (dataLimit && dataManipulated >= dataLimit)
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{
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DPRINTF(TrafficGen, "Data limit for RandomGen reached.\n");
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// No more requests. Return MaxTick.
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return MaxTick;
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} else {
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// return the time when the next request should take place
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Tick wait = random_mt.random(minPeriod, maxPeriod);
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// compensate for the delay experienced to not be elastic, by
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// default the value we generate is from the time we are
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// asked, so the elasticity happens automatically
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if (!elastic) {
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if (wait < delay)
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wait = 0;
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else
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wait -= delay;
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}
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return curTick() + wait;
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}
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}
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} // namespace gem5
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