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https://github.com/opelly27/Stockfish.git
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Marco Costalba
0026c88b3a
And make CRITICAL_SECTION locks the only option for Windows. This guarantees backward compatibility with all the Windows versions (even XP and older) and an hassle free experience when compiling for Windows. Tests performed by Ingo and reported on talkchess confirm there is no speed penalty against the most modern SRW locks: http://www.talkchess.com/forum/viewtopic.php?t=41835&start=20 No functional change. Signed-off-by: Marco Costalba <mcostalba@gmail.com>
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
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Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined(LOCK_H_INCLUDED)
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#define LOCK_H_INCLUDED
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#if !defined(_MSC_VER)
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# include <pthread.h>
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typedef pthread_mutex_t Lock;
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typedef pthread_cond_t WaitCondition;
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# define lock_init(x) pthread_mutex_init(x, NULL)
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# define lock_grab(x) pthread_mutex_lock(x)
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# define lock_release(x) pthread_mutex_unlock(x)
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# define lock_destroy(x) pthread_mutex_destroy(x)
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# define cond_destroy(x) pthread_cond_destroy(x)
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# define cond_init(x) pthread_cond_init(x, NULL)
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# define cond_signal(x) pthread_cond_signal(x)
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# define cond_wait(x,y) pthread_cond_wait(x,y)
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# define cond_timedwait(x,y,z) pthread_cond_timedwait(x,y,z)
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#else
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#define NOMINMAX // disable macros min() and max()
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#undef WIN32_LEAN_AND_MEAN
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#undef NOMINMAX
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// We use critical sections on Windows to support Windows XP and older versions,
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// unfortunatly cond_wait() is racy between lock_release() and WaitForSingleObject()
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// but apart from this they have the same speed performance of SRW locks.
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typedef CRITICAL_SECTION Lock;
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typedef HANDLE WaitCondition;
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# define lock_init(x) InitializeCriticalSection(x)
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# define lock_grab(x) EnterCriticalSection(x)
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# define lock_release(x) LeaveCriticalSection(x)
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# define lock_destroy(x) DeleteCriticalSection(x)
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# define cond_init(x) { *x = CreateEvent(0, FALSE, FALSE, 0); }
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# define cond_destroy(x) CloseHandle(*x)
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# define cond_signal(x) SetEvent(*x)
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# define cond_wait(x,y) { lock_release(y); WaitForSingleObject(*x, INFINITE); lock_grab(y); }
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# define cond_timedwait(x,y,z) { lock_release(y); WaitForSingleObject(*x,z); lock_grab(y); }
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#endif
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#endif // !defined(LOCK_H_INCLUDED)
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