/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#if !defined(LOCK_H_INCLUDED)
#define LOCK_H_INCLUDED
-#if !defined(_MSC_VER)
+#if !defined(_WIN32) && !defined(_WIN64)
# include <pthread.h>
typedef pthread_mutex_t Lock;
typedef pthread_cond_t WaitCondition;
-
-# define lock_init(x) pthread_mutex_init(x, NULL)
-# define lock_grab(x) pthread_mutex_lock(x)
-# define lock_release(x) pthread_mutex_unlock(x)
-# define lock_destroy(x) pthread_mutex_destroy(x)
-# define cond_destroy(x) pthread_cond_destroy(x)
-# define cond_init(x) pthread_cond_init(x, NULL)
-# define cond_signal(x) pthread_cond_signal(x)
-# define cond_wait(x,y) pthread_cond_wait(x,y)
+typedef pthread_t ThreadHandle;
+
+# define lock_init(x) pthread_mutex_init(&(x), NULL)
+# define lock_grab(x) pthread_mutex_lock(&(x))
+# define lock_release(x) pthread_mutex_unlock(&(x))
+# define lock_destroy(x) pthread_mutex_destroy(&(x))
+# define cond_destroy(x) pthread_cond_destroy(&(x))
+# define cond_init(x) pthread_cond_init(&(x), NULL)
+# define cond_signal(x) pthread_cond_signal(&(x))
+# define cond_wait(x,y) pthread_cond_wait(&(x),&(y))
+# define cond_timedwait(x,y,z) pthread_cond_timedwait(&(x),&(y),z)
+# define thread_create(x,f,id) !pthread_create(&(x),NULL,f,&(id))
+# define thread_join(x) pthread_join(x, NULL)
#else
+#if !defined(NOMINMAX)
+# define NOMINMAX // disable macros min() and max()
+#endif
+
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
+#undef NOMINMAX
-// Default fast and race free locks and condition variables
-#if !defined(OLD_LOCKS)
-
-typedef SRWLOCK Lock;
-typedef CONDITION_VARIABLE WaitCondition;
-
-# define lock_init(x) InitializeSRWLock(x)
-# define lock_grab(x) AcquireSRWLockExclusive(x)
-# define lock_release(x) ReleaseSRWLockExclusive(x)
-# define lock_destroy(x) (x)
-# define cond_destroy(x) (x)
-# define cond_init(x) InitializeConditionVariable(x)
-# define cond_signal(x) WakeConditionVariable(x)
-# define cond_wait(x,y) SleepConditionVariableSRW(x, y, INFINITE,0)
-
-// Fallback solution to build for Windows XP and older versions, note that
-// cond_wait() is racy between lock_release() and WaitForSingleObject().
-#else
-
+// We use critical sections on Windows to support Windows XP and older versions,
+// unfortunatly cond_wait() is racy between lock_release() and WaitForSingleObject()
+// but apart from this they have the same speed performance of SRW locks.
typedef CRITICAL_SECTION Lock;
typedef HANDLE WaitCondition;
-
-# define lock_init(x) InitializeCriticalSection(x)
-# define lock_grab(x) EnterCriticalSection(x)
-# define lock_release(x) LeaveCriticalSection(x)
-# define lock_destroy(x) DeleteCriticalSection(x)
-# define cond_init(x) { *x = CreateEvent(0, FALSE, FALSE, 0); }
-# define cond_destroy(x) CloseHandle(*x)
-# define cond_signal(x) SetEvent(*x)
-# define cond_wait(x,y) { lock_release(y); WaitForSingleObject(*x, INFINITE); lock_grab(y); }
-#endif
+typedef HANDLE ThreadHandle;
+
+# define lock_init(x) InitializeCriticalSection(&(x))
+# define lock_grab(x) EnterCriticalSection(&(x))
+# define lock_release(x) LeaveCriticalSection(&(x))
+# define lock_destroy(x) DeleteCriticalSection(&(x))
+# define cond_init(x) { x = CreateEvent(0, FALSE, FALSE, 0); }
+# define cond_destroy(x) CloseHandle(x)
+# define cond_signal(x) SetEvent(x)
+# define cond_wait(x,y) { lock_release(y); WaitForSingleObject(x, INFINITE); lock_grab(y); }
+# define cond_timedwait(x,y,z) { lock_release(y); WaitForSingleObject(x,z); lock_grab(y); }
+# define thread_create(x,f,id) (x = CreateThread(NULL,0,f,&(id),0,NULL), x != NULL)
+# define thread_join(x) { WaitForSingleObject(x, INFINITE); CloseHandle(x); }
#endif