src/systemc/tlm_bridge/sc_mm.cc

   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
  33 #include "systemc/tlm_bridge/sc_mm.hh"
  34
  35 namespace Gem5SystemC
  36 {
  37
  38 MemoryManager::MemoryManager() : numberOfAllocations(0), numberOfFrees(0) {}
  39
  40 MemoryManager::~MemoryManager()
  41 {
  42     for (gp *payload: freePayloads) {
  43         delete payload;
  44         numberOfFrees++;
  45     }
  46 }
  47
  48 gp *
  49 MemoryManager::allocate()
  50 {
  51     if (freePayloads.empty()) {
  52         numberOfAllocations++;
  53         return new gp(this);
  54     } else {
  55         gp *result = freePayloads.back();
  56         freePayloads.pop_back();
  57         return result;
  58     }
  59 }
  60
  61 void
  62 MemoryManager::free(gp *payload)
  63 {
  64     payload->reset(); // clears all extensions
  65     freePayloads.push_back(payload);
  66 }
  67
  68 } // namespace Gem5SystemC