PersistentTable.hh revision 7039
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 "mem/gems_common/Map.hh" 33#include "mem/protocol/AccessType.hh" 34#include "mem/ruby/common/Address.hh" 35#include "mem/ruby/common/Global.hh" 36#include "mem/ruby/common/NetDest.hh" 37#include "mem/ruby/system/MachineID.hh" 38 39class PersistentTableEntry 40{ 41 public: 42 void print(ostream& out) const {} 43 44 NetDest m_starving; 45 NetDest m_marked; 46 NetDest m_request_to_write; 47}; 48 49class PersistentTable 50{ 51 public: 52 // Constructors 53 PersistentTable(); 54 55 // Destructor 56 ~PersistentTable(); 57 58 // Public Methods 59 void persistentRequestLock(const Address& address, MachineID locker, 60 AccessType type); 61 void persistentRequestUnlock(const Address& address, MachineID unlocker); 62 bool okToIssueStarving(const Address& address, MachineID machID) const; 63 MachineID findSmallest(const Address& address) const; 64 AccessType typeOfSmallest(const Address& address) const; 65 void markEntries(const Address& address); 66 bool isLocked(const Address& addr) const; 67 int countStarvingForAddress(const Address& addr) const; 68 int countReadStarvingForAddress(const Address& addr) const; 69 70 static void printConfig(ostream& out) {} 71 72 void print(ostream& out) const; 73 74 private: 75 // Private copy constructor and assignment operator 76 PersistentTable(const PersistentTable& obj); 77 PersistentTable& operator=(const PersistentTable& obj); 78 79 // Data Members (m_prefix) 80 Map<Address, PersistentTableEntry>* m_map_ptr; 81}; 82 83inline ostream& 84operator<<(ostream& out, const PersistentTable& obj) 85{ 86 obj.print(out); 87 out << flush; 88 return out; 89} 90 91inline ostream& 92operator<<(ostream& out, const PersistentTableEntry& obj) 93{ 94 obj.print(out); 95 out << flush; 96 return out; 97} 98 99#endif // __MEM_RUBY_SYSTEM_PERSISTENTTABLE_HH__ 100