gem5/src/mem/ruby/profiler/AccessTraceForAddress.cc

/*
 * 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/profiler/AccessTraceForAddress.hh"
#include "mem/ruby/common/Histogram.hh"

AccessTraceForAddress::AccessTraceForAddress()
{
  m_histogram_ptr = NULL;
}

AccessTraceForAddress::AccessTraceForAddress(const Address& addr)
{
  m_addr = addr;
  m_total = 0;
  m_loads = 0;
  m_stores = 0;
  m_atomics = 0;
  m_user = 0;
  m_sharing = 0;
  m_histogram_ptr = NULL;
}

AccessTraceForAddress::~AccessTraceForAddress()
{
  if (m_histogram_ptr != NULL) {
    delete m_histogram_ptr;
    m_histogram_ptr = NULL;
  }
}

void AccessTraceForAddress::print(ostream& out) const
{
  out << m_addr;

  if (m_histogram_ptr == NULL) {
    out << " " << m_total;
    out << " | " << m_loads;
    out << " " << m_stores;
    out << " " << m_atomics;
    out << " | " << m_user;
    out << " " << m_total-m_user;
    out << " | " << m_sharing;
    out << " | " << m_touched_by.count();
  } else {
    assert(m_total == 0);
    out << " " << (*m_histogram_ptr);
  }
}

void AccessTraceForAddress::update(CacheRequestType type, AccessModeType access_mode, NodeID cpu, bool sharing_miss)
{
  m_touched_by.add(cpu);
  m_total++;
  if(type == CacheRequestType_ATOMIC) {
    m_atomics++;
  } else if(type == CacheRequestType_LD){
    m_loads++;
  } else if (type == CacheRequestType_ST){
    m_stores++;
  } else {
    //  ERROR_MSG("Trying to add invalid access to trace");
  }

  if (access_mode == AccessModeType_UserMode) {
    m_user++;
  }

  if (sharing_miss) {
    m_sharing++;
  }
}

int AccessTraceForAddress::getTotal() const
{
  if (m_histogram_ptr == NULL) {
    return m_total;
  } else {
    return m_histogram_ptr->getTotal();
  }
}

void AccessTraceForAddress::addSample(int value)
{
  assert(m_total == 0);
  if (m_histogram_ptr == NULL) {
    m_histogram_ptr = new Histogram;
  }
  m_histogram_ptr->add(value);
}

bool node_less_then_eq(const AccessTraceForAddress* n1, const AccessTraceForAddress* n2)
{
  return (n1->getTotal() > n2->getTotal());
}