From de366a16f11b7e27a5b5e064a2a773052568428e Mon Sep 17 00:00:00 2001 From: "Steve Reinhardt ext:(%2C%20Nilay%20Vaish%20%3Cnilay%40cs.wisc.edu%3E%2C%20Ali%20Saidi%20%3CAli.Saidi%40ARM.com%3E)" Date: Mon, 25 Nov 2013 11:21:00 -0600 Subject: sim: simulate with multiple threads and event queues This patch adds support for simulating with multiple threads, each of which operates on an event queue. Each sim object specifies which eventq is would like to be on. A custom barrier implementation is being added using which eventqs synchronize. The patch was tested in two different configurations: 1. ruby_network_test.py: in this simulation L1 cache controllers receive requests from the cpu. The requests are replied to immediately without any communication taking place with any other level. 2. twosys-tsunami-simple-atomic: this configuration simulates a client-server system which are connected by an ethernet link. We still lack the ability to communicate using message buffers or ports. But other things like simulation start and end, synchronizing after every quantum are working. Committed by: Nilay Vaish --- src/sim/serialize.cc | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'src/sim/serialize.cc') diff --git a/src/sim/serialize.cc b/src/sim/serialize.cc index 9ef92d449..18af044d0 100644 --- a/src/sim/serialize.cc +++ b/src/sim/serialize.cc @@ -1,5 +1,7 @@ /* * Copyright (c) 2002-2005 The Regents of The University of Michigan + * Copyright (c) 2013 Advanced Micro Devices, Inc. + * Copyright (c) 2013 Mark D. Hill and David A. Wood * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -456,8 +458,12 @@ Globals::serialize(ostream &os) nameOut(os); paramOut(os, "curTick", curTick()); - nameOut(os, "MainEventQueue"); - mainEventQueue.serialize(os); + paramOut(os, "numMainEventQueues", numMainEventQueues); + + for (uint32_t i = 0; i < numMainEventQueues; ++i) { + nameOut(os, "MainEventQueue"); + mainEventQueue[i]->serialize(os); + } } void @@ -465,9 +471,12 @@ Globals::unserialize(Checkpoint *cp, const std::string §ion) { Tick tick; paramIn(cp, section, "curTick", tick); - mainEventQueue.setCurTick(tick); + paramIn(cp, section, "numMainEventQueues", numMainEventQueues); - mainEventQueue.unserialize(cp, "MainEventQueue"); + for (uint32_t i = 0; i < numMainEventQueues; ++i) { + mainEventQueue[i]->setCurTick(tick); + mainEventQueue[i]->unserialize(cp, "MainEventQueue"); + } } Serializable::Serializable() -- cgit v1.2.3