2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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29 #ifndef __FIFO_BUFFER_HH__
30 #define __FIFO_BUFFER_HH__
32 #include "base/res_list.hh"
36 // The FifoBuffer requires only that the objects to be used have a default
37 // constructor and a dump() method
43 typedef typename res_list<T>::iterator iterator;
51 FifoBuffer(unsigned sz)
53 buffer = new res_list<T>(sz, true, 0);
59 assert(buffer->num_free() > 0);
60 buffer->add_head(item);
63 iterator head() { return buffer->head(); }
64 iterator tail() { return buffer->tail(); }
66 unsigned count() {return buffer->count();}
67 unsigned free_slots() {return buffer->num_free();}
69 T *peek() { return (count() > 0) ? tail().data_ptr() : 0; }
73 assert(buffer->count() > 0);
74 T rval = *buffer->tail();
75 buffer->remove_tail();
81 ~FifoBuffer() { delete buffer; }