learning_gem5: Add code for hello-goodbye example
Adding more code from Learning gem5 Part II See http://learning.gem5.org/book/part2/parameters.html Change-Id: I9fe5655239e011c718c5cf5fd62bebcda66ea966 Signed-off-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-on: https://gem5-review.googlesource.com/5021 Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
This commit is contained in:
Jason Lowe-Power
56
configs/learning_gem5/part2/hello_goodbye.py
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56
configs/learning_gem5/part2/hello_goodbye.py
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@@ -0,0 +1,56 @@
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# -*- coding: utf-8 -*-
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# Copyright (c) 2017 Jason Lowe-Power
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# All rights reserved.
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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
|
||||
# met: redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer;
|
||||
# redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
|
||||
# documentation and/or other materials provided with the distribution;
|
||||
# neither the name of the copyright holders nor the names of its
|
||||
# contributors may be used to endorse or promote products derived from
|
||||
# this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
# 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
|
||||
# (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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# Authors: Jason Lowe-Power
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"""
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A simple run file that creates two SimObjects: HelloObject and GoodbyeObject
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and then runs the simulation. Using the debug "Hello" is informative.
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IMPORTANT: If you modify this file, it's likely that the Learning gem5 book
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also needs to be updated. For now, email Jason <power.jg@gmail.com>
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"""
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# import the m5 (gem5) library created when gem5 is built
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import m5
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# import all of the SimObjects
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from m5.objects import *
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# set up the root SimObject and start the simulation
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root = Root(full_system = False)
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# Create an instantiation of the simobject you created
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root.hello = HelloObject(time_to_wait = '2us', number_of_fires = 5)
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root.hello.goodbye_object = GoodbyeObject(buffer_size='100B')
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# instantiate all of the objects we've created above
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m5.instantiate()
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print "Beginning simulation!"
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exit_event = m5.simulate()
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print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause())
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50
src/learning_gem5/part2/HelloObject.py
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50
src/learning_gem5/part2/HelloObject.py
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@@ -0,0 +1,50 @@
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# -*- coding: utf-8 -*-
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# Copyright (c) 2017 Jason Lowe-Power
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# All rights reserved.
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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
|
||||
# notice, this list of conditions and the following disclaimer;
|
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# redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
|
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# documentation and/or other materials provided with the distribution;
|
||||
# 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
|
||||
# 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
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
# 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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# Authors: Jason Lowe-Power
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from m5.params import *
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from m5.SimObject import SimObject
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class HelloObject(SimObject):
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type = 'HelloObject'
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cxx_header = "learning_gem5/part2/hello_object.hh"
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time_to_wait = Param.Latency("Time before firing the event")
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number_of_fires = Param.Int(1, "Number of times to fire the event before "
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"goodbye")
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goodbye_object = Param.GoodbyeObject("A goodbye object")
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class GoodbyeObject(SimObject):
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type = 'GoodbyeObject'
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cxx_header = "learning_gem5/part2/goodbye_object.hh"
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buffer_size = Param.MemorySize('1kB',
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"Size of buffer to fill with goodbye")
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write_bandwidth = Param.MemoryBandwidth('100MB/s', "Bandwidth to fill "
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"the buffer")
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@@ -30,5 +30,10 @@
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Import('*')
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SimObject('SimpleObject.py')
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SimObject('HelloObject.py')
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Source('simple_object.cc')
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Source('hello_object.cc')
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Source('goodbye_object.cc')
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DebugFlag('HelloExample', "For Learning gem5 Part 2. Simple example debug flag")
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103
src/learning_gem5/part2/goodbye_object.cc
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103
src/learning_gem5/part2/goodbye_object.cc
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@@ -0,0 +1,103 @@
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/*
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* Copyright (c) 2017 Jason Lowe-Power
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* All rights reserved.
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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
|
||||
* notice, this list of conditions and the following disclaimer;
|
||||
* redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* 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
|
||||
* contributors may be used to endorse or promote products derived from
|
||||
* this software without specific prior written permission.
|
||||
*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (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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* Authors: Jason Lowe-Power
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*/
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#include "learning_gem5/part2/goodbye_object.hh"
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#include "debug/HelloExample.hh"
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#include "sim/sim_exit.hh"
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GoodbyeObject::GoodbyeObject(GoodbyeObjectParams *params) :
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SimObject(params), event([this]{ processEvent(); }, name() + ".event"),
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bandwidth(params->write_bandwidth), bufferSize(params->buffer_size),
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buffer(nullptr), bufferUsed(0)
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{
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buffer = new char[bufferSize];
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DPRINTF(HelloExample, "Created the goodbye object\n");
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}
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GoodbyeObject::~GoodbyeObject()
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{
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delete[] buffer;
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}
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void
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GoodbyeObject::processEvent()
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{
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DPRINTF(HelloExample, "Processing the event!\n");
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// Actually do the "work" of the event
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fillBuffer();
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}
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void
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GoodbyeObject::sayGoodbye(std::string other_name)
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{
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DPRINTF(HelloExample, "Saying goodbye to %s\n", other_name);
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message = "Goodbye " + other_name + "!! ";
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// Kick off the the first buffer fill. If it can't fill the whole buffer
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// because of a limited bandwidth, then this function will schedule another
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// event to finish the fill
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fillBuffer();
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}
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void
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GoodbyeObject::fillBuffer()
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{
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// There better be a message
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assert(message.length() > 0);
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// Copy from the message to the buffer per byte.
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int bytes_copied = 0;
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for (auto it = message.begin();
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it < message.end() && bufferUsed < bufferSize - 1;
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it++, bufferUsed++, bytes_copied++) {
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// Copy the character into the buffer
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buffer[bufferUsed] = *it;
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}
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if (bufferUsed < bufferSize - 1) {
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// Wait for the next copy for as long as it would have taken
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DPRINTF(HelloExample, "Scheduling another fillBuffer in %d ticks\n",
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bandwidth * bytes_copied);
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schedule(event, curTick() + bandwidth * bytes_copied);
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} else {
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DPRINTF(HelloExample, "Goodbye done copying!\n");
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// Be sure to take into account the time for the last bytes
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exitSimLoop(buffer, 0, curTick() + bandwidth * bytes_copied);
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}
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}
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GoodbyeObject*
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GoodbyeObjectParams::create()
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{
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return new GoodbyeObject(this);
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}
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84
src/learning_gem5/part2/goodbye_object.hh
Normal file
84
src/learning_gem5/part2/goodbye_object.hh
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@@ -0,0 +1,84 @@
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/*
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* Copyright (c) 2017 Jason Lowe-Power
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met: redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer;
|
||||
* redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution;
|
||||
* neither the name of the copyright holders nor the names of its
|
||||
* contributors may be used to endorse or promote products derived from
|
||||
* this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
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*
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* Authors: Jason Lowe-Power
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*/
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#ifndef __LEARNING_GEM5_GOODBYE_OBJECT_HH__
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#define __LEARNING_GEM5_GOODBYE_OBJECT_HH__
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#include <string>
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#include "params/GoodbyeObject.hh"
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#include "sim/sim_object.hh"
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class GoodbyeObject : public SimObject
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{
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private:
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/**
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* Fill the buffer with the next chunk of data
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*/
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void processEvent();
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/// An event that wraps the above function
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EventFunctionWrapper event;
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/**
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* Fills the buffer for one iteration. If the buffer isn't full, this
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* function will enqueue another event to continue filling.
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*/
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void fillBuffer();
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/// The bytes processed per tick
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float bandwidth;
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/// The size of the buffer we are going to fill
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int bufferSize;
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/// The buffer we are putting our message in
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char *buffer;
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/// The message to put into the buffer.
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std::string message;
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/// The amount of the buffer we've used so far.
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int bufferUsed;
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public:
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GoodbyeObject(GoodbyeObjectParams *p);
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~GoodbyeObject();
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/**
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* Called by an outside object. Starts off the events to fill the buffer
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* with a goodbye message.
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*
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* @param name the name of the object we are saying goodbye to.
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*/
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void sayGoodbye(std::string name);
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};
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#endif // __LEARNING_GEM5_GOODBYE_OBJECT_HH__
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77
src/learning_gem5/part2/hello_object.cc
Normal file
77
src/learning_gem5/part2/hello_object.cc
Normal file
@@ -0,0 +1,77 @@
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/*
|
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* Copyright (c) 2017 Jason Lowe-Power
|
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* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met: redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer;
|
||||
* redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution;
|
||||
* neither the name of the copyright holders nor the names of its
|
||||
* contributors may be used to endorse or promote products derived from
|
||||
* this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* Authors: Jason Lowe-Power
|
||||
*/
|
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|
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#include "learning_gem5/part2/hello_object.hh"
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#include "base/misc.hh"
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#include "debug/HelloExample.hh"
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HelloObject::HelloObject(HelloObjectParams *params) :
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SimObject(params),
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// This is a C++ lambda. When the event is triggered, it will call the
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// processEvent() function. (this must be captured)
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event([this]{ processEvent(); }, name() + ".event"),
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goodbye(params->goodbye_object),
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// Note: This is not needed as you can *always* reference this->name()
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myName(params->name),
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latency(params->time_to_wait),
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timesLeft(params->number_of_fires)
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{
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DPRINTF(HelloExample, "Created the hello object\n");
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panic_if(!goodbye, "HelloObject must have a non-null GoodbyeObject");
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}
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void
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HelloObject::startup()
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{
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// Before simulation starts, we need to schedule the event
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schedule(event, latency);
|
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}
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|
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void
|
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HelloObject::processEvent()
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{
|
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timesLeft--;
|
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DPRINTF(HelloExample, "Hello world! Processing the event! %d left\n",
|
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timesLeft);
|
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|
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if (timesLeft <= 0) {
|
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DPRINTF(HelloExample, "Done firing!\n");
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goodbye->sayGoodbye(myName);
|
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} else {
|
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schedule(event, curTick() + latency);
|
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}
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}
|
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|
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HelloObject*
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HelloObjectParams::create()
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{
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return new HelloObject(this);
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}
|
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74
src/learning_gem5/part2/hello_object.hh
Normal file
74
src/learning_gem5/part2/hello_object.hh
Normal file
@@ -0,0 +1,74 @@
|
||||
/*
|
||||
* Copyright (c) 2017 Jason Lowe-Power
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met: redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer;
|
||||
* redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution;
|
||||
* neither the name of the copyright holders nor the names of its
|
||||
* contributors may be used to endorse or promote products derived from
|
||||
* this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* Authors: Jason Lowe-Power
|
||||
*/
|
||||
|
||||
#ifndef __LEARNING_GEM5_HELLO_OBJECT_HH__
|
||||
#define __LEARNING_GEM5_HELLO_OBJECT_HH__
|
||||
|
||||
#include <string>
|
||||
|
||||
#include "learning_gem5/part2/goodbye_object.hh"
|
||||
#include "params/HelloObject.hh"
|
||||
#include "sim/sim_object.hh"
|
||||
|
||||
class HelloObject : public SimObject
|
||||
{
|
||||
private:
|
||||
/**
|
||||
* Example function to execute on an event trigger
|
||||
*/
|
||||
void processEvent();
|
||||
|
||||
/// An event that wraps the above function
|
||||
EventFunctionWrapper event;
|
||||
|
||||
/// Pointer to the corresponding GoodbyeObject. Set via Python
|
||||
GoodbyeObject* goodbye;
|
||||
|
||||
/// The name of this object in the Python config file
|
||||
const std::string myName;
|
||||
|
||||
/// Latency between calling the event (in ticks)
|
||||
const Tick latency;
|
||||
|
||||
/// Number of times left to fire the event before goodbye
|
||||
int timesLeft;
|
||||
|
||||
public:
|
||||
HelloObject(HelloObjectParams *p);
|
||||
|
||||
/**
|
||||
* Part of a SimObject's initilaization. Startup is called after all
|
||||
* SimObjects have been constructed. It is called after the user calls
|
||||
* simulate() for the first time.
|
||||
*/
|
||||
void startup();
|
||||
};
|
||||
|
||||
#endif // __LEARNING_GEM5_HELLO_OBJECT_HH__
|
||||
Reference in New Issue
Block a user