1 files changed, 126 insertions, 0 deletions
diff --git a/src/mem/ruby/recorder/Tracer.cc b/src/mem/ruby/recorder/Tracer.cc
new file mode 100644
index 000000000..2a0acba46
--- /dev/null
+++ b/src/mem/ruby/recorder/Tracer.cc
@@ -0,0 +1,126 @@
+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * 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.
+ */
+
+/*
+ * $Id$
+ *
+ */
+
+#include "Tracer.hh"
+#include "TraceRecord.hh"
+#include "EventQueue.hh"
+#include "PrioHeap.hh"
+#include "System.hh"
+
+Tracer::Tracer()
+{
+  m_enabled = false;
+}
+
+Tracer::~Tracer()
+{
+}
+
+void Tracer::startTrace(string filename)
+{
+  if (m_enabled) {
+    stopTrace();
+  }
+
+  if (filename != "") {
+    m_trace_file.open(filename.c_str());
+    if (m_trace_file.fail()) {
+      cout << "Error: error opening file '" << filename << "'" << endl;
+      cout << "Trace not enabled." << endl;
+      return;
+    }
+    cout << "Request trace enabled to output file '" << filename << "'" << endl;
+    m_enabled = true;
+  }
+}
+
+void Tracer::stopTrace()
+{
+  assert(m_enabled == true);
+  m_trace_file.close();
+  cout << "Request trace file closed." << endl;
+  m_enabled = false;
+}
+
+void Tracer::traceRequest(NodeID id, const Address& data_addr, const Address& pc_addr, CacheRequestType type, Time time)
+{
+  assert(m_enabled == true);
+  TraceRecord tr(id, data_addr, pc_addr, type, time);
+  tr.output(m_trace_file);
+}
+
+// Class method
+int Tracer::playbackTrace(string filename)
+{
+  igzstream in(filename.c_str());
+  if (in.fail()) {
+    cout << "Error: error opening file '" << filename << "'" << endl;
+    return 0;
+  }
+
+  time_t start_time = time(NULL);
+
+  TraceRecord record;
+  int counter = 0;
+  // Read in the next TraceRecord
+  bool ok = record.input(in);
+  while (ok) {
+    // Put it in the right cache
+    record.issueRequest();
+    counter++;
+
+    // Read in the next TraceRecord
+    ok = record.input(in);
+
+    // Clear the statistics after warmup
+    if (counter == g_trace_warmup_length) {
+      cout << "Clearing stats after warmup of length " << g_trace_warmup_length << endl;
+      g_system_ptr->clearStats();
+    }
+  }
+
+  // Flush the prefetches through the system
+  g_eventQueue_ptr->triggerEvents(g_eventQueue_ptr->getTime() + 1000);  // FIXME - should be smarter
+
+  time_t stop_time = time(NULL);
+  double seconds = difftime(stop_time, start_time);
+  double minutes = seconds / 60.0;
+  cout << "playbackTrace: " << minutes << " minutes" << endl;
+
+  return counter;
+}
+
+void Tracer::print(ostream& out) const
+{
+}