2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
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29 #ifndef __DEV_PKTFIFO_HH__
30 #define __DEV_PKTFIFO_HH__
36 #include "dev/etherpkt.hh"
37 #include "sim/serialize.hh"
43 std::list<PacketPtr> fifo;
49 explicit PacketFifo(int max) : _maxsize(max), _size(0), _reserved(0) {}
50 virtual ~PacketFifo() {}
52 int packets() const { return fifo.size(); }
53 int maxsize() const { return _maxsize; }
54 int size() const { return _size; }
55 int reserved() const { return _reserved; }
56 int avail() const { return _maxsize - _size - _reserved; }
57 bool empty() const { return size() <= 0; }
58 bool full() const { return avail() <= 0; }
60 int reserve(int len = 0)
67 bool push(PacketPtr ptr)
69 assert(_reserved <= ptr->length);
70 if (avail() < ptr->length - _reserved)
79 PacketPtr front() { return fifo.front(); }
86 _size -= fifo.front()->length;
102 void serialize(const std::string &base, std::ostream &os);
103 void unserialize(const std::string &base,
104 Checkpoint *cp, const std::string §ion);
107 #endif // __DEV_PKTFIFO_HH__