hashmap.hh

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· HH 代码 · 共 88 行

/*
 * Copyright (c) 2003, 2004, 2005
 * The Regents of The University of Michigan
 * All Rights Reserved
 *
 * This code is part of the M5 simulator.
 *
 * Permission is granted to use, copy, create derivative works and
 * redistribute this software and such derivative works for any
 * purpose, so long as the copyright notice above, this grant of
 * permission, and the disclaimer below appear in all copies made; and
 * so long as the name of The University of Michigan is not used in
 * any advertising or publicity pertaining to the use or distribution
 * of this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND
 * WITHOUT WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE. THE REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE
 * LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, SPECIAL, INDIRECT,
 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGES.
 *
 * Authors: Nathan L. Binkert
 */

#ifndef __HASHMAP_HH__
#define __HASHMAP_HH__

#if defined(__GNUC__) && __GNUC__ >= 3
#include <ext/hash_map>
#else
#include <hash_map>
#endif

#include <string>

#include "sim/host.hh"

#if defined(__GNUC__) && __GNUC__ >= 3
    #define __hash_namespace __gnu_cxx
#else
    #define __hash_namespace std
#endif

namespace m5 {
    using ::__hash_namespace::hash_multimap;
    using ::__hash_namespace::hash_map;
    using ::__hash_namespace::hash;
}


///////////////////////////////////
// Some default Hashing Functions
//

namespace __hash_namespace {
#if defined(__APPLE__) || !defined(__LP64__) && !defined(__alpha__) && !defined(__SUNPRO_CC)
    template<>
    struct hash<uint64_t> {
        size_t operator()(uint64_t r) const {
            return r;
        }
    };

    template<>
    struct hash<int64_t> {
        size_t operator()(int64_t r) const {
            return r;
        };
    };
#endif

    template<>
    struct hash<std::string> {
        size_t operator()(const std::string &s) const {
            return(__stl_hash_string(s.c_str()));
        }
    };
}


#endif // __HASHMAP_HH__