NetDest.hh revision 10004:5d8b72563869 
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// NetDest specifies the network destination of a NetworkMessage
30// This is backward compatible with the Set class that was previously
31// used to specify network destinations.
32// NetDest supports both node networks and component networks
33
34#ifndef __MEM_RUBY_COMMON_NETDEST_HH__
35#define __MEM_RUBY_COMMON_NETDEST_HH__
36
37#include <iostream>
38#include <vector>
39
40#include "debug/RubyMemory.hh"
41#include "mem/protocol/MachineType.hh"
42#include "mem/ruby/common/Global.hh"
43#include "mem/ruby/common/Set.hh"
44#include "mem/ruby/system/MachineID.hh"
45
46class NetDest
47{
48  public:
49    // Constructors
50    // creates and empty set
51    NetDest();
52    explicit NetDest(int bit_size);
53
54    NetDest& operator=(const Set& obj);
55
56    ~NetDest()
57    { }
58
59    void add(MachineID newElement);
60    void addNetDest(const NetDest& netDest);
61    void addRandom();
62    void setNetDest(MachineType machine, const Set& set);
63    void remove(MachineID oldElement);
64    void removeNetDest(const NetDest& netDest);
65    void clear();
66    void broadcast();
67    void broadcast(MachineType machine);
68    int count() const;
69    bool isEqual(const NetDest& netDest) const;
70
71    // return the logical OR of this netDest and orNetDest
72    NetDest OR(const NetDest& orNetDest) const;
73
74    // return the logical AND of this netDest and andNetDest
75    NetDest AND(const NetDest& andNetDest) const;
76
77    // Returns true if the intersection of the two netDests is non-empty
78    bool intersectionIsNotEmpty(const NetDest& other_netDest) const;
79
80    // Returns true if the intersection of the two netDests is empty
81    bool intersectionIsEmpty(const NetDest& other_netDest) const;
82
83    bool isSuperset(const NetDest& test) const;
84    bool isSubset(const NetDest& test) const { return test.isSuperset(*this); }
85    bool isElement(MachineID element) const;
86    bool isBroadcast() const;
87    bool isEmpty() const;
88
89    // For Princeton Network
90    std::vector<NodeID> getAllDest();
91
92    MachineID smallestElement() const;
93    MachineID smallestElement(MachineType machine) const;
94
95    void resize();
96    int getSize() const { return m_bits.size(); }
97
98    // get element for a index
99    NodeID elementAt(MachineID index);
100
101    void print(std::ostream& out) const;
102
103  private:
104    // returns a value >= MachineType_base_level("this machine")
105    // and < MachineType_base_level("next highest machine")
106    int
107    vecIndex(MachineID m) const
108    {
109        int vec_index = MachineType_base_level(m.type);
110        assert(vec_index < m_bits.size());
111        return vec_index;
112    }
113
114    NodeID
115    bitIndex(NodeID index) const
116    {
117        return index;
118    }
119
120    std::vector<Set> m_bits;  // a vector of bit vectors - i.e. Sets
121};
122
123inline std::ostream&
124operator<<(std::ostream& out, const NetDest& obj)
125{
126    obj.print(out);
127    out << std::flush;
128    return out;
129}
130
131#endif // __MEM_RUBY_COMMON_NETDEST_HH__
132
133