StoreTrace.cc revision 7048
1/* 2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include "mem/ruby/eventqueue/RubyEventQueue.hh" 30#include "mem/ruby/profiler/StoreTrace.hh" 31 32bool StoreTrace::s_init = false; // Total number of store lifetimes of 33 // all lines 34int64 StoreTrace::s_total_samples = 0; // Total number of store 35 // lifetimes of all lines 36Histogram* StoreTrace::s_store_count_ptr = NULL; 37Histogram* StoreTrace::s_store_first_to_stolen_ptr = NULL; 38Histogram* StoreTrace::s_store_last_to_stolen_ptr = NULL; 39Histogram* StoreTrace::s_store_first_to_last_ptr = NULL; 40 41StoreTrace::StoreTrace(const Address& addr) 42 : m_store_count(-1), m_store_first_to_stolen(-1), 43 m_store_last_to_stolen(-1), m_store_first_to_last(-1) 44{ 45 StoreTrace::initSummary(); 46 m_addr = addr; 47 m_total_samples = 0; 48 49 // Really -1 isn't valid, so this will trigger the initilization code 50 m_last_writer = -1; 51 m_stores_this_interval = 0; 52} 53 54StoreTrace::~StoreTrace() 55{ 56} 57 58void 59StoreTrace::print(ostream& out) const 60{ 61 out << m_addr 62 << " total_samples: " << m_total_samples << endl 63 << "store_count: " << m_store_count << endl 64 << "store_first_to_stolen: " << m_store_first_to_stolen << endl 65 << "store_last_to_stolen: " << m_store_last_to_stolen << endl 66 << "store_first_to_last: " << m_store_first_to_last << endl; 67} 68 69void 70StoreTrace::initSummary() 71{ 72 if (!s_init) { 73 s_total_samples = 0; 74 s_store_count_ptr = new Histogram(-1); 75 s_store_first_to_stolen_ptr = new Histogram(-1); 76 s_store_last_to_stolen_ptr = new Histogram(-1); 77 s_store_first_to_last_ptr = new Histogram(-1); 78 } 79 s_init = true; 80} 81 82void 83StoreTrace::printSummary(ostream& out) 84{ 85 out << "total_samples: " << s_total_samples << endl; 86 out << "store_count: " << (*s_store_count_ptr) << endl; 87 out << "store_first_to_stolen: " << (*s_store_first_to_stolen_ptr) << endl; 88 out << "store_last_to_stolen: " << (*s_store_last_to_stolen_ptr) << endl; 89 out << "store_first_to_last: " << (*s_store_first_to_last_ptr) << endl; 90} 91 92void 93StoreTrace::clearSummary() 94{ 95 StoreTrace::initSummary(); 96 s_total_samples = 0; 97 s_store_count_ptr->clear(); 98 s_store_first_to_stolen_ptr->clear(); 99 s_store_last_to_stolen_ptr->clear(); 100 s_store_first_to_last_ptr->clear(); 101} 102 103void 104StoreTrace::store(NodeID node) 105{ 106 Time current = g_eventQueue_ptr->getTime(); 107 108 assert((m_last_writer == -1) || (m_last_writer == node)); 109 110 m_last_writer = node; 111 if (m_last_writer == -1) { 112 assert(m_stores_this_interval == 0); 113 } 114 115 if (m_stores_this_interval == 0) { 116 // A new proessor just wrote the line, so reset the stats 117 m_first_store = current; 118 } 119 120 m_last_store = current; 121 m_stores_this_interval++; 122} 123 124void 125StoreTrace::downgrade(NodeID node) 126{ 127 if (node == m_last_writer) { 128 Time current = g_eventQueue_ptr->getTime(); 129 assert(m_stores_this_interval != 0); 130 assert(m_last_store != 0); 131 assert(m_first_store != 0); 132 assert(m_last_writer != -1); 133 134 // Per line stats 135 m_store_first_to_stolen.add(current - m_first_store); 136 m_store_count.add(m_stores_this_interval); 137 m_store_last_to_stolen.add(current - m_last_store); 138 m_store_first_to_last.add(m_last_store - m_first_store); 139 m_total_samples++; 140 141 // Global stats 142 assert(s_store_first_to_stolen_ptr != NULL); 143 s_store_first_to_stolen_ptr->add(current - m_first_store); 144 s_store_count_ptr->add(m_stores_this_interval); 145 s_store_last_to_stolen_ptr->add(current - m_last_store); 146 s_store_first_to_last_ptr->add(m_last_store - m_first_store); 147 s_total_samples++; 148 149 // Initilize for next go round 150 m_stores_this_interval = 0; 151 m_last_store = 0; 152 m_first_store = 0; 153 m_last_writer = -1; 154 } 155} 156