hash_map.hh

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file hash_map.hh
 *
 * @author Pekka Jääskeläinen 2005 (pjaaskel-no.spam-cs.tut.fi)
 *
 * Definition for a hash map.
 *
 * Hash map provides amortized constant time access for situations in which
 * the keys need not to be stored in sorted order. hash_map is not provided
 * by STL. It's usually provided as an STL extension. For example, SGI STL
 * implements it. This header selects the best possible implementation
 * for hash_map available in the system.
 */
 
#include "tce_config.h"
 
#if defined(STD_TR1_UNORDERED_MAP)
 
#include <tr1/unordered_map>
 
#define hash_map std::tr1::unordered_map
 
#elif defined(STD_UNORDERED_MAP)
 
#include <unordered_map>
 
#define hash_map std::unordered_map
 
#elif defined(HASHMAP_GNU_EXT)
 
#include <ext/hash_map>
 
using __gnu_cxx::hash_map;
 
#elif defined(HASHMAP_STD)
 
#include <hash_map>
 
using std::hash_map;
 
#else
 
#warning Pretending std::map to be hash_map.
 
#define hash_map std::map
 
#endif
 
/// @todo Check for STLport hash_map
/// @todo Check for Intel's compiler. It seems Intel's compiler provides
/// compatibility for GNU so HASHMAP_GNU_EXT gets defined.