base/hashmap.hh

   1 /*
   2  * Copyright (c) 2003 The Regents of The University of Michigan
   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: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef __HASHMAP_HH__
  30 #define __HASHMAP_HH__
  31
  32 #if defined(__GNUC__) && __GNUC__ >= 3
  33 #include <ext/hash_map>
  34 #else
  35 #include <hash_map>
  36 #endif
  37
  38 #include <string>
  39
  40 #include "sim/host.hh"
  41
  42 #if defined(__GNUC__) && __GNUC__ >= 3
  43     #define __hash_namespace __gnu_cxx
  44 #else
  45     #define __hash_namespace std
  46 #endif
  47
  48 namespace m5 {
  49     using ::__hash_namespace::hash_multimap;
  50     using ::__hash_namespace::hash_map;
  51     using ::__hash_namespace::hash;
  52 }
  53
  54
  55 ///////////////////////////////////
  56 // Some default Hashing Functions
  57 //
  58
  59 namespace __hash_namespace {
  60     template<>
  61     struct hash<uint64_t> {
  62         size_t operator()(uint64_t r) const {
  63             return r;
  64         }
  65     };
  66
  67     template<>
  68     struct hash<Counter> {
  69         size_t operator()(Counter r) const {
  70             return r;
  71         };
  72     };
  73
  74     template<>
  75     struct hash<std::string> {
  76         size_t operator()(const std::string &s) const {
  77             return(__stl_hash_string(s.c_str()));
  78         }
  79     };
  80 }
  81
  82
  83 #endif // __HASHMAP_HH__