src/base/hashmap.hh

   1 /*
   2  * Copyright (c) 2012 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Copyright (c) 2003-2005 The Regents of The University of Michigan
  15  * All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions are
  19  * met: redistributions of source code must retain the above copyright
  20  * notice, this list of conditions and the following disclaimer;
  21  * redistributions in binary form must reproduce the above copyright
  22  * notice, this list of conditions and the following disclaimer in the
  23  * documentation and/or other materials provided with the distribution;
  24  * neither the name of the copyright holders nor the names of its
  25  * contributors may be used to endorse or promote products derived from
  26  * this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39  *
  40  * Authors: Nathan Binkert
  41  *          Andreas Hansson
  42  */
  43
  44 #ifndef __HASHMAP_HH__
  45 #define __HASHMAP_HH__
  46
  47 #if defined(__clang__)
  48 // check if the header is present, which requires -stdlib=libc++, and
  49 // that in turn causes problems with incomplete template parameters
  50 #if (__has_include(<unordered_map>))
  51 #define HAVE_STD_UNORDERED_MAP 1
  52 #endif
  53 #else
  54 // we only support gcc >= 4.4 as the other option
  55 #define HAVE_STD_UNORDERED_MAP 1
  56 #endif
  57
  58 // set a default value of 0 clang with the header in the tr1 namespace
  59 #ifndef HAVE_STD_UNORDERED_MAP
  60 #define HAVE_STD_UNORDERED_MAP 0
  61 #endif
  62
  63 #define hash_map unordered_map
  64 #define hash_multimap unordered_multimap
  65 #define hash_set unordered_set
  66 #define hash_multiset unordered_multiset
  67
  68 #if HAVE_STD_UNORDERED_MAP
  69 // gcc or clang with libc++
  70 #include <unordered_map>
  71 #include <unordered_set>
  72 #define __hash_namespace std
  73 #define __hash_namespace_begin namespace std {
  74 #define __hash_namespace_end }
  75 #else
  76 // clang with libstdc++
  77 #include <tr1/unordered_map>
  78 #include <tr1/unordered_set>
  79 #define __hash_namespace std::tr1
  80 #define __hash_namespace_begin namespace std { namespace tr1 {
  81 #define __hash_namespace_end } }
  82 #endif
  83
  84 namespace m5 {
  85     using ::__hash_namespace::hash_multimap;
  86     using ::__hash_namespace::hash_multiset;
  87     using ::__hash_namespace::hash_map;
  88     using ::__hash_namespace::hash_set;
  89     using ::__hash_namespace::hash;
  90 }
  91
  92 #endif // __HASHMAP_HH__