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;

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39typedef std::shared_ptr<Message> MsgPtr;
40
41class Message
42{
43 public:
44 Message(Tick curTime)
45 : m_time(curTime),
46 m_LastEnqueueTime(curTime),
47 m_DelayedTicks(0)
48 { }
49
50 Message(const Message &other)
51 : m_time(other.m_time),
52 m_LastEnqueueTime(other.m_LastEnqueueTime),
53 m_DelayedTicks(other.m_DelayedTicks)
54 { }
55
56 virtual ~Message() { }
57
58 virtual MsgPtr clone() const = 0;
59 virtual void print(std::ostream& out) const = 0;
60 virtual void setIncomingLink(int) {}
61 virtual void setVnet(int) {}
62
63 /**
64 * The two functions below are used for reading / writing the message
65 * functionally. The methods return true if the address in the packet
66 * matches the address / address range in the message. Each message
67 * class that can be potentially searched for the address needs to
68 * implement these methods.
69 */
70 virtual bool functionalRead(Packet *pkt) = 0;
71 //{ fatal("Read functional access not implemented!"); }
72 virtual bool functionalWrite(Packet *pkt) = 0;
73 //{ fatal("Write functional access not implemented!"); }
74
75 //! Update the delay this message has experienced so far.
76 void updateDelayedTicks(Tick curTime)
77 {
78 assert(m_LastEnqueueTime <= curTime);
79 Tick delta = curTime - m_LastEnqueueTime;
80 m_DelayedTicks += delta;
81 }
82 const Tick getDelayedTicks() const {return m_DelayedTicks;}
83
84 void setLastEnqueueTime(const Tick& time) { m_LastEnqueueTime = time; }
85 const Tick getLastEnqueueTime() const {return m_LastEnqueueTime;}
86
87 const Tick& getTime() const { return m_time; }
88 void setTime(const Tick& new_time) { m_time = new_time; }
89
90 private:
91 Tick m_time;
92 Tick m_LastEnqueueTime; // my last enqueue time
93 Tick m_DelayedTicks; // my delayed cycles
94};
95
96inline std::ostream&
97operator<<(std::ostream& out, const Message& obj)
98{
99 obj.print(out);
100 out << std::flush;
101 return out;
102}
103
104#endif // __MEM_RUBY_SLICC_INTERFACE_MESSAGE_HH__