Retire OLD_LOCKS option

[stockfish] / src / lock.h

diff --git a/src/lock.h b/src/lock.h
index 334bc7c9b3fe6321f907067e80d938b9cd7c511f..7f74fcf739033caf29ea40d4e26a8f962d1554f1 100644 (file)
--- a/src/lock.h
+++ b/src/lock.h
@@ -1,7 +1,7 @@
 /*
   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
@@ -17,11 +17,9 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-
 #if !defined(LOCK_H_INCLUDED)
 #define LOCK_H_INCLUDED
 
-
 #if !defined(_MSC_VER)
 
 #  include <pthread.h>
@@ -37,13 +35,19 @@ typedef pthread_cond_t WaitCondition;
 #  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)
 
 #else
 
+#define NOMINMAX // disable macros min() and max()
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #undef WIN32_LEAN_AND_MEAN
+#undef NOMINMAX
 
+// 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;
 
@@ -55,6 +59,8 @@ typedef HANDLE WaitCondition;
 #  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); }
+
 #endif
 
 #endif // !defined(LOCK_H_INCLUDED)