2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
6 Stockfish is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 Stockfish is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #if !defined(LOCK_H_INCLUDED)
21 #define LOCK_H_INCLUDED
23 #if !defined(_WIN32) && !defined(_WIN64)
27 typedef pthread_mutex_t Lock;
28 typedef pthread_cond_t WaitCondition;
29 typedef pthread_t ThreadHandle;
30 typedef void*(*start_fn)(void*);
32 # define lock_init(x) pthread_mutex_init(&(x), NULL)
33 # define lock_grab(x) pthread_mutex_lock(&(x))
34 # define lock_release(x) pthread_mutex_unlock(&(x))
35 # define lock_destroy(x) pthread_mutex_destroy(&(x))
36 # define cond_destroy(x) pthread_cond_destroy(&(x))
37 # define cond_init(x) pthread_cond_init(&(x), NULL)
38 # define cond_signal(x) pthread_cond_signal(&(x))
39 # define cond_wait(x,y) pthread_cond_wait(&(x),&(y))
40 # define cond_timedwait(x,y,z) pthread_cond_timedwait(&(x),&(y),z)
41 # define thread_create(x,f,id) !pthread_create(&(x),NULL,(start_fn)f,&(id))
42 # define thread_join(x) pthread_join(x, NULL)
46 #if !defined(NOMINMAX)
47 # define NOMINMAX // disable macros min() and max()
50 #define WIN32_LEAN_AND_MEAN
52 #undef WIN32_LEAN_AND_MEAN
55 // We use critical sections on Windows to support Windows XP and older versions,
56 // unfortunatly cond_wait() is racy between lock_release() and WaitForSingleObject()
57 // but apart from this they have the same speed performance of SRW locks.
58 typedef CRITICAL_SECTION Lock;
59 typedef HANDLE WaitCondition;
60 typedef HANDLE ThreadHandle;
62 # define lock_init(x) InitializeCriticalSection(&(x))
63 # define lock_grab(x) EnterCriticalSection(&(x))
64 # define lock_release(x) LeaveCriticalSection(&(x))
65 # define lock_destroy(x) DeleteCriticalSection(&(x))
66 # define cond_init(x) { x = CreateEvent(0, FALSE, FALSE, 0); }
67 # define cond_destroy(x) CloseHandle(x)
68 # define cond_signal(x) SetEvent(x)
69 # define cond_wait(x,y) { lock_release(y); WaitForSingleObject(x, INFINITE); lock_grab(y); }
70 # define cond_timedwait(x,y,z) { lock_release(y); WaitForSingleObject(x,z); lock_grab(y); }
71 # define thread_create(x,f,id) (x = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)f,&(id),0,NULL), x != NULL)
72 # define thread_join(x) { WaitForSingleObject(x, INFINITE); CloseHandle(x); }
76 #endif // !defined(LOCK_H_INCLUDED)