1/*
2 * Copyright 2018 Google, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution;
11 * neither the name of the copyright holders nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#ifndef __SYSTEMC_EXT_CHANNEL_SC_FIFO_IN_IF_HH__
31#define __SYSTEMC_EXT_CHANNEL_SC_FIFO_IN_IF_HH__
32
33#include "../core/sc_interface.hh"
34
35namespace sc_core
36{
37
38class sc_event;
39
40template <class T>
41class sc_fifo_nonblocking_in_if : virtual public sc_interface
42{
43  public:
44    virtual bool nb_read(T &) = 0;
45    virtual const sc_event &data_written_event() const = 0;
46};
47
48template <class T>
49class sc_fifo_blocking_in_if : virtual public sc_interface
50{
51  public:
52    virtual void read(T &) = 0;
53    virtual T read() = 0;
54};
55
56template <class T>
57class sc_fifo_in_if : public sc_fifo_nonblocking_in_if<T>,
58                      public sc_fifo_blocking_in_if<T>
59{
60  public:
61    virtual int num_available() const = 0;
62
63  protected:
64    sc_fifo_in_if() : sc_interface() {}
65
66  private:
67    // Disabled
68    sc_fifo_in_if(const sc_fifo_in_if<T> &);
69    sc_fifo_in_if<T> &operator = (const sc_fifo_in_if<T> &) { return *this; }
70};
71
72} // namespace sc_core
73
74#endif  //__SYSTEMC_EXT_CHANNEL_SC_FIFO_IN_IF_HH__
75