PersistentTable.hh revision 8607
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#ifndef __MEM_RUBY_SYSTEM_PERSISTENTTABLE_HH__ 30#define __MEM_RUBY_SYSTEM_PERSISTENTTABLE_HH__ 31 32#include <iostream> 33 34#include "base/hashmap.hh" 35#include "mem/protocol/AccessType.hh" 36#include "mem/ruby/common/Address.hh" 37#include "mem/ruby/common/Global.hh" 38#include "mem/ruby/common/NetDest.hh" 39#include "mem/ruby/system/MachineID.hh" 40 41class PersistentTableEntry 42{ 43 public: 44 PersistentTableEntry() {} 45 void print(std::ostream& out) const {} 46 47 NetDest m_starving; 48 NetDest m_marked; 49 NetDest m_request_to_write; 50}; 51 52class PersistentTable 53{ 54 public: 55 // Constructors 56 PersistentTable(); 57 58 // Destructor 59 ~PersistentTable(); 60 61 // Public Methods 62 void persistentRequestLock(const Address& address, MachineID locker, 63 AccessType type); 64 void persistentRequestUnlock(const Address& address, MachineID unlocker); 65 bool okToIssueStarving(const Address& address, MachineID machID) const; 66 MachineID findSmallest(const Address& address) const; 67 AccessType typeOfSmallest(const Address& address) const; 68 void markEntries(const Address& address); 69 bool isLocked(const Address& addr) const; 70 int countStarvingForAddress(const Address& addr) const; 71 int countReadStarvingForAddress(const Address& addr) const; 72 73 static void printConfig(std::ostream& out) {} 74 75 void print(std::ostream& out) const; 76 77 private: 78 // Private copy constructor and assignment operator 79 PersistentTable(const PersistentTable& obj); 80 PersistentTable& operator=(const PersistentTable& obj); 81 82 // Data Members (m_prefix) 83 typedef m5::hash_map<Address, PersistentTableEntry> AddressMap; 84 AddressMap m_map; 85}; 86 87inline std::ostream& 88operator<<(std::ostream& out, const PersistentTable& obj) 89{ 90 obj.print(out); 91 out << std::flush; 92 return out; 93} 94 95inline std::ostream& 96operator<<(std::ostream& out, const PersistentTableEntry& obj) 97{ 98 obj.print(out); 99 out << std::flush; 100 return out; 101} 102 103#endif // __MEM_RUBY_SYSTEM_PERSISTENTTABLE_HH__ 104