janwas
be3f3bdbfb
further cleanup to sysdep.h: avoid pulling in win and ia32; split header up into stl, compiler, and the actual sys_* API. (all but the latter are in PCH). timer: also avoid dragging in ia32 win: move snprintf fix to posix.h cpu: simplify reasoning about cores, now given as logicalPerCore (not package) vfs_optimizer: fix if archive building is partially disabled This was SVN commit r5008.
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
#ifndef INCLUDED_STL
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#define INCLUDED_STL
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// compiling without exceptions (usually for performance reasons);
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// tell STL not to generate any.
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#if CONFIG_DISABLE_EXCEPTIONS
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# if OS_WIN
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# define _HAS_EXCEPTIONS 0
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# else
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# define STL_NO_EXCEPTIONS
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# endif
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#endif
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// STL_HASH_MAP, STL_HASH_MULTIMAP, STL_HASH_SET
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// these containers are useful but not part of C++98. most STL vendors
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// provide them in some form; we hide their differences behind macros.
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#if GCC_VERSION
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# include <ext/hash_map>
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# include <ext/hash_set>
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# define STL_HASH_MAP __gnu_cxx::hash_map
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# define STL_HASH_MULTIMAP __gnu_cxx::hash_multimap
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# define STL_HASH_SET __gnu_cxx::hash_set
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# define STL_HASH_MULTISET __gnu_cxx::hash_multiset
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# define STL_SLIST __gnu_cxx::slist
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template<typename T>
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size_t STL_HASH_VALUE(T v)
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{
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return __gnu_cxx::hash<T>()(v);
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}
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// Hack: GCC Doesn't have a hash instance for std::string included (and it looks
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// like they won't add it - marked resolved/wontfix in the gcc bugzilla)
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namespace __gnu_cxx
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{
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template<> struct hash<std::string>
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{
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size_t operator()(const std::string& __x) const
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{
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return __stl_hash_string(__x.c_str());
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}
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};
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template<> struct hash<const void*>
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{
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// Nemesi hash function (see: http://mail-index.netbsd.org/tech-kern/2001/11/30/0001.html)
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// treating the pointer as an array of bytes that is hashed.
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size_t operator()(const void* __x) const
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{
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union {
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const void* ptr;
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unsigned char bytes[sizeof(void*)];
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} val;
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size_t h = 5381;
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val.ptr = __x;
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for(uint i = 0; i < sizeof(val); ++i)
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h = 257*h + val.bytes[i];
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return 257*h;
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}
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};
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}
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#else // !__GNUC__
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# include <hash_map>
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# include <hash_set>
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// VC7 or above
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# if MSC_VERSION >= 1300
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# define STL_HASH_MAP stdext::hash_map
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# define STL_HASH_MULTIMAP stdext::hash_multimap
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# define STL_HASH_SET stdext::hash_set
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# define STL_HASH_MULTISET stdext::hash_multiset
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# define STL_HASH_VALUE stdext::hash_value
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// VC6 and anything else (most likely name)
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# else
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# define STL_HASH_MAP std::hash_map
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# define STL_HASH_MULTIMAP std::hash_multimap
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# define STL_HASH_SET std::hash_set
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# define STL_HASH_MULTISET std::hash_multiset
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# define STL_HASH_VALUE std::hash_value
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# endif // MSC_VERSION >= 1300
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#endif // !__GNUC__
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#endif // #ifndef INCLUDED_STL
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