/indra/llcommon/llhash.h
https://bitbucket.org/lindenlab/viewer-beta/ · C++ Header · 72 lines · 36 code · 7 blank · 29 comment · 6 complexity · 58e585ddf0e16f2b0bb89ef560aeaa7c MD5 · raw file
- /**
- * @file llhash.h
- * @brief Wrapper for a hash function.
- *
- * $LicenseInfo:firstyear=2004&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #ifndef LL_LLHASH_H
- #define LL_LLHASH_H
- #include "llpreprocessor.h" // for GCC_VERSION
- #if (LL_WINDOWS)
- #include <hash_map>
- #include <algorithm>
- #elif LL_DARWIN || LL_LINUX
- # if GCC_VERSION >= 40300 // gcc 4.3 and up
- # include <backward/hashtable.h>
- # elif GCC_VERSION >= 30400 // gcc 3.4 and up
- # include <ext/hashtable.h>
- # elif __GNUC__ >= 3
- # include <ext/stl_hashtable.h>
- # else
- # include <hashtable.h>
- # endif
- #elif LL_SOLARIS
- #include <ext/hashtable.h>
- #else
- #error Please define your platform.
- #endif
- // Warning - an earlier template-based version of this routine did not do
- // the correct thing on Windows. Since this is only used to get
- // a string hash, it was converted to a regular routine and
- // unit tests added.
- inline size_t llhash( const char * value )
- {
- #if LL_WINDOWS
- return stdext::hash_value(value);
- #elif ( (defined _STLPORT_VERSION) || ((LL_LINUX) && (__GNUC__ <= 2)) )
- std::hash<const char *> H;
- return H(value);
- #elif LL_DARWIN || LL_LINUX || LL_SOLARIS
- __gnu_cxx::hash<const char *> H;
- return H(value);
- #else
- #error Please define your platform.
- #endif
- }
- #endif