/* * Copyright (c) 2012 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall * not be construed as granting a license to any other intellectual * property including but not limited to intellectual property relating * to a hardware implementation of the functionality of the software * licensed hereunder. You may use the software subject to the license * terms below provided that you ensure that this notice is replicated * unmodified and in its entirety in all distributions of the software, * modified or unmodified, in source code or in binary form. * * Copyright (c) 2003-2005 The Regents of The University of Michigan * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer; * redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution; * neither the name of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Authors: Nathan Binkert * Andreas Hansson */ #ifndef __HASHMAP_HH__ #define __HASHMAP_HH__ #if defined(__GNUC__) // for compilers that deprecate ext/hash_map, i.e. gcc >= 4.3 and // clang, use unordered_map // we need to determine what is available, as in the non-c++0x case, // i.e. gcc == 4.3, the containers are in the std::tr1 namespace, and // only gcc >= 4.4 (with -std=c++0x) adds the final container // implementation in the std namespace #if defined(__clang__) // align with -std=c++0x only for clang >= 3.0 in CCFLAGS and also // check if the header is present as this depends on what clang was // built against, using XCode clang 3.1, for example, the header is // not present without adding -stdlib=libc++ #if (__clang_major__ >= 3 && __has_include()) #define HAVE_STD_UNORDERED_MAP 1 #else // we only support clang versions above 2.9 and these all have the tr1 // unordered_map #define HAVE_STD_TR1_UNORDERED_MAP 1 #endif #else // align with -std=c++0x only for gcc >= 4.4 in CCFLAGS, contrary to // clang we can rely entirely on the compiler version #if ((__GNUC__ == 4 && __GNUC_MINOR__ >= 4) || __GNUC__ > 4) #define HAVE_STD_UNORDERED_MAP 1 #else #define HAVE_STD_TR1_UNORDERED_MAP 1 #endif #endif // set a default value of 0 #ifndef HAVE_STD_UNORDERED_MAP #define HAVE_STD_UNORDERED_MAP 0 #endif // set a default value of 0 #ifndef HAVE_STD_TR1_UNORDERED_MAP #define HAVE_STD_TR1_UNORDERED_MAP 0 #endif // now we are ready to deal with the actual includes based on what is // available #if (HAVE_STD_UNORDERED_MAP || HAVE_STD_TR1_UNORDERED_MAP) #define hash_map unordered_map #define hash_multimap unordered_multimap #define hash_set unordered_set #define hash_multiset unordered_multiset // these versions also have an existing hash function for strings and // 64-bit integer types #define HAVE_HASH_FUNCTIONS 1 #if HAVE_STD_UNORDERED_MAP // clang or gcc >= 4.4 #include #include // note that this assumes that -std=c++0x is added to the command line // which is done in the SConstruct CXXFLAGS for gcc >= 4.4 and clang // >= 3.0 #define __hash_namespace std #define __hash_namespace_begin namespace std { #define __hash_namespace_end } #else // clang <= 3.0, gcc == 4.3 #include #include #define __hash_namespace std::tr1 #define __hash_namespace_begin namespace std { namespace tr1 { #define __hash_namespace_end } } #endif #else // gcc < 4.3 #include #include #define __hash_namespace __gnu_cxx #define __hash_namespace_begin namespace __gnu_cxx { #define __hash_namespace_end } #endif #else // non GNU compiler #include #include #define __hash_namsepace std #define __hash_namespace_begin namespace std { #define __hash_namespace_end } #endif #include #include "base/types.hh" namespace m5 { using ::__hash_namespace::hash_multimap; using ::__hash_namespace::hash_multiset; using ::__hash_namespace::hash_map; using ::__hash_namespace::hash_set; using ::__hash_namespace::hash; } /////////////////////////////////// // Some default Hashing Functions // __hash_namespace_begin // if the hash functions for 64-bit integer types and strings are not // already available, then declare them here #if !defined(HAVE_HASH_FUNCTIONS) #if !defined(__LP64__) && !defined(__alpha__) && !defined(__SUNPRO_CC) template<> struct hash { size_t operator()(uint64_t r) const { return r; } }; template<> struct hash { size_t operator()(int64_t r) const { return r; }; }; #endif template<> struct hash { size_t operator()(const std::string &s) const { return(__stl_hash_string(s.c_str())); } }; template <> struct hash > { size_t operator() (std::pair r) const { return (__stl_hash_string(r.first.c_str())) ^ r.second; } }; #endif __hash_namespace_end #endif // __HASHMAP_HH__