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Diffstat (limited to 'src/mem/probes/mem_trace.cc')
| -rw-r--r-- | src/mem/probes/mem_trace.cc | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/mem/probes/mem_trace.cc b/src/mem/probes/mem_trace.cc new file mode 100644 index 000000000..6bf6f7f77 --- /dev/null +++ b/src/mem/probes/mem_trace.cc @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2015 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * 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: Andreas Hansson + * Andreas Sandberg + */ + +#include "mem/probes/mem_trace.hh" + +#include "base/callback.hh" +#include "base/output.hh" +#include "params/MemTraceProbe.hh" +#include "proto/packet.pb.h" + +MemTraceProbe::MemTraceProbe(MemTraceProbeParams *p) + : BaseMemProbe(p), + traceStream(nullptr) +{ + std::string filename; + if (p->trace_file != "") { + // If the trace file is not specified as an absolute path, + // append the current simulation output directory + filename = simout.resolve(p->trace_file); + + const std::string suffix = ".gz"; + // If trace_compress has been set, check the suffix. Append + // accordingly. + if (p->trace_compress && + filename.compare(filename.size() - suffix.size(), suffix.size(), + suffix) != 0) + filename = filename + suffix; + } else { + // Generate a filename from the name of the SimObject. Append .trc + // and .gz if we want compression enabled. + filename = simout.resolve(name() + ".trc" + + (p->trace_compress ? ".gz" : "")); + } + + traceStream = new ProtoOutputStream(filename); + + // Create a protobuf message for the header and write it to + // the stream + ProtoMessage::PacketHeader header_msg; + header_msg.set_obj_id(name()); + header_msg.set_tick_freq(SimClock::Frequency); + traceStream->write(header_msg); + + // Register a callback to compensate for the destructor not + // being called. The callback forces the stream to flush and + // closes the output file. + registerExitCallback( + new MakeCallback<MemTraceProbe, &MemTraceProbe::closeStreams>(this)); +} + +void +MemTraceProbe::closeStreams() +{ + if (traceStream != NULL) + delete traceStream; +} + +void +MemTraceProbe::handleRequest(const PacketPtr &pkt) +{ + ProtoMessage::Packet pkt_msg; + + pkt_msg.set_tick(curTick()); + pkt_msg.set_cmd(pkt->cmdToIndex()); + pkt_msg.set_flags(pkt->req->getFlags()); + pkt_msg.set_addr(pkt->getAddr()); + pkt_msg.set_size(pkt->getSize()); + + traceStream->write(pkt_msg); +} + + +MemTraceProbe * +MemTraceProbeParams::create() +{ + return new MemTraceProbe(this); +} |