1 files changed, 285 insertions, 0 deletions
diff --git a/src/mem/ruby/tester/DeterministicDriver.cc b/src/mem/ruby/tester/DeterministicDriver.cc
new file mode 100644
index 000000000..762672118
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+++ b/src/mem/ruby/tester/DeterministicDriver.cc
@@ -0,0 +1,285 @@
+
+/*
+ * 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 "mem/ruby/common/Global.hh"
+#include "mem/ruby/system/System.hh"
+#include "mem/ruby/tester/DeterministicDriver.hh"
+#include "mem/ruby/eventqueue/RubyEventQueue.hh"
+#include "mem/ruby/tester/SpecifiedGenerator.hh"
+#include "mem/ruby/tester/DetermGETXGenerator.hh"
+#include "mem/ruby/tester/DetermInvGenerator.hh"
+#include "mem/ruby/tester/DetermSeriesGETSGenerator.hh"
+#include "mem/ruby/common/SubBlock.hh"
+#include "mem/protocol/Chip.hh"
+#include "mem/packet.hh"
+
+DeterministicDriver::DeterministicDriver(RubySystem* sys_ptr)
+{
+  m_finish_time = 0;
+  m_last_issue = -11;
+  m_done_counter = 0;
+  m_loads_completed = 0;
+  m_stores_completed = 0;
+
+  m_numCompletionsPerNode = g_NUM_COMPLETIONS_BEFORE_PASS;
+
+  m_last_progress_vector.setSize(RubyConfig::numberOfProcessors());
+  for (int i=0; i<m_last_progress_vector.size(); i++) {
+    m_last_progress_vector[i] = 0;
+  }
+
+  m_load_vector.setSize(g_deterministic_addrs);
+  for (int i=0; i<m_load_vector.size(); i++) {
+    m_load_vector[i] = -1;  // No processor last held it
+  }
+
+  m_store_vector.setSize(g_deterministic_addrs);
+  for (int i=0; i<m_store_vector.size(); i++) {
+    m_store_vector[i] = -1;  // No processor last held it
+  }
+
+  m_generator_vector.setSize(RubyConfig::numberOfProcessors());
+
+  SpecifiedGeneratorType generator = string_to_SpecifiedGeneratorType(g_SpecifiedGenerator);
+
+  for (int i=0; i<m_generator_vector.size(); i++) {
+    switch (generator) {
+    case SpecifiedGeneratorType_DetermGETXGenerator:
+      m_generator_vector[i] = new DetermGETXGenerator(i, *this);
+      break;
+    case SpecifiedGeneratorType_DetermSeriesGETSGenerator:
+      m_generator_vector[i] = new DetermSeriesGETSGenerator(i, *this);
+      break;
+    case SpecifiedGeneratorType_DetermInvGenerator:
+      m_generator_vector[i] = new DetermInvGenerator(i, *this);
+      break;
+    default:
+      ERROR_MSG("Unexpected specified generator type");
+    }
+  }
+
+  // add the tester consumer to the global event queue
+  g_eventQueue_ptr->scheduleEvent(this, 1);
+}
+
+DeterministicDriver::~DeterministicDriver()
+{
+  for (int i=0; i<m_last_progress_vector.size(); i++) {
+    delete m_generator_vector[i];
+  }
+}
+
+void
+DeterministicDriver::hitCallback(Packet * pkt)
+{
+  NodeID proc = pkt->req->contextId();
+  SubBlock data(Address(pkt->getAddr()), pkt->req->getSize());
+  if (pkt->hasData()) {
+    for (int i = 0; i < pkt->req->getSize(); i++) {
+      data.setByte(i, *(pkt->getPtr<uint8>()+i));
+    }
+  }
+  m_generator_vector[proc]->performCallback(proc, data);
+  m_last_progress_vector[proc] = g_eventQueue_ptr->getTime();
+}
+
+bool DeterministicDriver::isStoreReady(NodeID node)
+{
+  return isAddrReady(node, m_store_vector);
+}
+
+bool DeterministicDriver::isStoreReady(NodeID node, Address addr)
+{
+  return isAddrReady(node, m_store_vector, addr);
+}
+
+bool DeterministicDriver::isLoadReady(NodeID node)
+{
+  return isAddrReady(node, m_load_vector);
+}
+
+bool DeterministicDriver::isLoadReady(NodeID node, Address addr)
+{
+  return isAddrReady(node, m_load_vector, addr);
+}
+
+// searches for any address in the addr_vector
+bool DeterministicDriver::isAddrReady(NodeID node, Vector<NodeID> addr_vector)
+{
+  for (int i=0; i<addr_vector.size(); i++) {
+    if (((addr_vector[i]+1)%RubyConfig::numberOfProcessors() == node) &&
+        (m_loads_completed+m_stores_completed >= m_numCompletionsPerNode*node) && // is this node next
+        (g_eventQueue_ptr->getTime() >= m_last_issue + 10)) { // controll rate of requests
+      return true;
+    }
+  }
+  return false;
+}
+
+// test for a particular addr
+bool DeterministicDriver::isAddrReady(NodeID node, Vector<NodeID> addr_vector, Address addr)
+{
+  int addr_number = addr.getAddress()/RubyConfig::dataBlockBytes();
+
+  ASSERT ((addr_number >= 0) && (addr_number < addr_vector.size()));
+
+  if (((addr_vector[addr_number]+1)%RubyConfig::numberOfProcessors() == node) &&
+      (m_loads_completed+m_stores_completed >= m_numCompletionsPerNode*node) && // is this node next
+      (g_eventQueue_ptr->getTime() >= m_last_issue + 10)) { // controll rate of requests
+    return true;
+  } else {
+    return false;
+  }
+}
+
+void DeterministicDriver::loadCompleted(NodeID node, Address addr)
+{
+  m_loads_completed++;
+  setNextAddr(node, addr, m_load_vector);
+}
+
+void DeterministicDriver::storeCompleted(NodeID node, Address addr)
+{
+  m_stores_completed++;
+  setNextAddr(node, addr, m_store_vector);
+}
+
+void DeterministicDriver::setNextAddr(NodeID node, Address addr, Vector<NodeID>& addr_vector)
+{
+  // mark the addr vector that this proc was the last to use the particular address
+  int addr_number = addr.getAddress()/RubyConfig::dataBlockBytes();
+  addr_vector[addr_number] = node;
+}
+
+Address DeterministicDriver::getNextLoadAddr(NodeID node)
+{
+  return getNextAddr(node, m_load_vector);
+}
+
+Address DeterministicDriver::getNextStoreAddr(NodeID node)
+{
+  return getNextAddr(node, m_store_vector);
+}
+
+Address DeterministicDriver::getNextAddr(NodeID node, Vector<NodeID> addr_vector)
+{
+
+  // This method deterministically picks the next addr the node should acquirer
+  // The addrs cycle through according to NodeID 0->1->...->lastID->0...
+
+  Address addr;
+
+  // should only be called if we know a addr is ready for the node
+  ASSERT(isAddrReady(node, addr_vector));
+
+  for (int addr_number=0; addr_number<addr_vector.size(); addr_number++) {
+  //for (int addr_number=addr_vector.size()-1; addr_number>0; addr_number--) {
+
+    // is this node next in line for the addr
+    if (((addr_vector[addr_number]+1)%RubyConfig::numberOfProcessors()) == node) {
+
+      // One addr per cache line
+      addr.setAddress(addr_number * RubyConfig::dataBlockBytes());
+    }
+  }
+
+  m_last_issue = g_eventQueue_ptr->getTime();
+
+  return addr;
+}
+
+
+void DeterministicDriver::reportDone()
+{
+  m_done_counter++;
+  if ((m_done_counter == RubyConfig::numberOfProcessors())) {
+      //|| (m_done_counter == g_tester_length)) {
+    m_finish_time = g_eventQueue_ptr->getTime();
+  }
+}
+
+void DeterministicDriver::recordLoadLatency(Time time)
+{
+  m_load_latency.add(time);
+}
+
+void DeterministicDriver::recordStoreLatency(Time time)
+{
+  m_store_latency.add(time);
+}
+
+void DeterministicDriver::wakeup()
+{
+  //  checkForDeadlock();
+  if (m_done_counter < RubyConfig::numberOfProcessors()) {
+    g_eventQueue_ptr->scheduleEvent(this, g_DEADLOCK_THRESHOLD);
+  }
+}
+
+void DeterministicDriver::checkForDeadlock()
+{
+  int size = m_last_progress_vector.size();
+  Time current_time = g_eventQueue_ptr->getTime();
+  for (int processor=0; processor<size; processor++) {
+    if ((current_time - m_last_progress_vector[processor]) > g_DEADLOCK_THRESHOLD) {
+      WARN_EXPR(processor);
+#ifndef NDEBUG
+      Sequencer* seq_ptr = g_system_ptr->getChip(processor/RubyConfig::numberOfProcsPerChip())->getSequencer(processor%RubyConfig::numberOfProcsPerChip());
+#endif
+      assert(seq_ptr != NULL);
+      //     if (seq_ptr->isRequestPending()) {
+      //       WARN_EXPR(seq_ptr->pendingAddress());
+      //      }
+      WARN_EXPR(current_time);
+      WARN_EXPR(m_last_progress_vector[processor]);
+      WARN_EXPR(current_time - m_last_progress_vector[processor]);
+      ERROR_MSG("Deadlock detected.");
+    }
+  }
+}
+
+void DeterministicDriver::printStats(ostream& out) const
+{
+  out << endl;
+  out << "DeterministicDriver Stats" << endl;
+  out << "---------------------" << endl;
+
+  out << "finish_time: " << m_finish_time << endl;
+  out << "load_latency: " << m_load_latency << endl;
+  out << "store_latency: " << m_store_latency << endl;
+}
+
+void DeterministicDriver::print(ostream& out) const
+{
+}