1/*
2 * Copyright (c) 2015, University of Kaiserslautern
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:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice,
10 *    this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * 3. Neither the name of the copyright holder nor the names of its
17 *    contributors may be used to endorse or promote products derived from
18 *    this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
24 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 * Authors:
33 *    Robert Gernhardt
34 *    Matthias Jung
35 */
36
37#include "systemc/tlm_bridge/sc_mm.hh"
38
39namespace Gem5SystemC
40{
41
42MemoryManager::MemoryManager() : numberOfAllocations(0), numberOfFrees(0) {}
43
44MemoryManager::~MemoryManager()
45{
46    for (gp *payload: freePayloads) {
47        delete payload;
48        numberOfFrees++;
49    }
50}
51
52gp *
53MemoryManager::allocate()
54{
55    if (freePayloads.empty()) {
56        numberOfAllocations++;
57        return new gp(this);
58    } else {
59        gp *result = freePayloads.back();
60        freePayloads.pop_back();
61        return result;
62    }
63}
64
65void
66MemoryManager::free(gp *payload)
67{
68    payload->reset(); // clears all extensions
69    freePayloads.push_back(payload);
70}
71
72} // namespace Gem5SystemC
73