1 files changed, 158 insertions, 0 deletions
diff --git a/src/mem/ruby/profiler/StoreTrace.cc b/src/mem/ruby/profiler/StoreTrace.cc
new file mode 100644
index 000000000..c53f590ac
--- /dev/null
+++ b/src/mem/ruby/profiler/StoreTrace.cc
@@ -0,0 +1,158 @@
+
+/*
+ * 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 "StoreTrace.hh"
+#include "EventQueue.hh"
+
+bool StoreTrace::s_init = false; // Total number of store lifetimes of all lines
+int64 StoreTrace::s_total_samples = 0; // Total number of store lifetimes of all lines
+Histogram* StoreTrace::s_store_count_ptr = NULL;
+Histogram* StoreTrace::s_store_first_to_stolen_ptr = NULL;
+Histogram* StoreTrace::s_store_last_to_stolen_ptr = NULL;
+Histogram* StoreTrace::s_store_first_to_last_ptr = NULL;
+
+StoreTrace::StoreTrace(const Address& addr) :
+  m_store_count(-1), m_store_first_to_stolen(-1), m_store_last_to_stolen(-1), m_store_first_to_last(-1)
+{
+  StoreTrace::initSummary();
+  m_addr = addr;
+  m_total_samples = 0;
+  m_last_writer = -1;  // Really -1 isn't valid, so this will trigger the initilization code
+  m_stores_this_interval = 0;
+}
+
+StoreTrace::~StoreTrace()
+{
+}
+
+void StoreTrace::print(ostream& out) const
+{
+  out << m_addr;
+  out << " total_samples: " << m_total_samples << endl;
+  out << "store_count: " << m_store_count << endl;
+  out << "store_first_to_stolen: " << m_store_first_to_stolen << endl;
+  out << "store_last_to_stolen: " << m_store_last_to_stolen << endl;
+  out << "store_first_to_last: " << m_store_first_to_last  << endl;
+}
+
+// Class method
+void StoreTrace::initSummary()
+{
+  if (!s_init) {
+    s_total_samples = 0;
+    s_store_count_ptr = new Histogram(-1);
+    s_store_first_to_stolen_ptr = new Histogram(-1);
+    s_store_last_to_stolen_ptr = new Histogram(-1);
+    s_store_first_to_last_ptr = new Histogram(-1);
+  }
+  s_init = true;
+}
+
+// Class method
+void StoreTrace::printSummary(ostream& out)
+{
+  out << "total_samples: " << s_total_samples << endl;
+  out << "store_count: " << (*s_store_count_ptr) << endl;
+  out << "store_first_to_stolen: " << (*s_store_first_to_stolen_ptr) << endl;
+  out << "store_last_to_stolen: " << (*s_store_last_to_stolen_ptr) << endl;
+  out << "store_first_to_last: " << (*s_store_first_to_last_ptr) << endl;
+}
+
+// Class method
+void StoreTrace::clearSummary()
+{
+  StoreTrace::initSummary();
+  s_total_samples = 0;
+  s_store_count_ptr->clear();
+  s_store_first_to_stolen_ptr->clear();
+  s_store_last_to_stolen_ptr->clear();
+  s_store_first_to_last_ptr->clear();
+}
+
+void StoreTrace::store(NodeID node)
+{
+  Time current = g_eventQueue_ptr->getTime();
+
+  assert((m_last_writer == -1) || (m_last_writer == node));
+
+  m_last_writer = node;
+  if (m_last_writer == -1) {
+    assert(m_stores_this_interval == 0);
+  }
+
+  if (m_stores_this_interval == 0) {
+    // A new proessor just wrote the line, so reset the stats
+    m_first_store = current;
+  }
+
+  m_last_store = current;
+  m_stores_this_interval++;
+}
+
+void StoreTrace::downgrade(NodeID node)
+{
+  if (node == m_last_writer) {
+    Time current = g_eventQueue_ptr->getTime();
+    assert(m_stores_this_interval != 0);
+    assert(m_last_store != 0);
+    assert(m_first_store != 0);
+    assert(m_last_writer != -1);
+
+    // Per line stats
+    m_store_first_to_stolen.add(current - m_first_store);
+    m_store_count.add(m_stores_this_interval);
+    m_store_last_to_stolen.add(current - m_last_store);
+    m_store_first_to_last.add(m_last_store - m_first_store);
+    m_total_samples++;
+
+    // Global stats
+    assert(s_store_first_to_stolen_ptr != NULL);
+    s_store_first_to_stolen_ptr->add(current - m_first_store);
+    s_store_count_ptr->add(m_stores_this_interval);
+    s_store_last_to_stolen_ptr->add(current - m_last_store);
+    s_store_first_to_last_ptr->add(m_last_store - m_first_store);
+    s_total_samples++;
+
+    // Initilize for next go round
+    m_stores_this_interval = 0;
+    m_last_store = 0;
+    m_first_store = 0;
+    m_last_writer = -1;
+  }
+}
+
+bool node_less_then_eq(const StoreTrace* n1, const StoreTrace* n2)
+{
+  return (n1->getTotal() > n2->getTotal());
+}