Fix cpu_count() on some platforms

[stockfish] / src / platform.h

diff --git a/src/platform.h b/src/platform.h
index f9739c69b5c1ce537636d66a0e88459d1d0ea76b..ad02575bc4b983d207543252049759816e39f21f 100644 (file)
--- a/src/platform.h
+++ b/src/platform.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) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2013 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
@@ -40,6 +40,7 @@ typedef unsigned __int64 uint64_t;
 
 #else
 #  include <inttypes.h>
+#  include <unistd.h>  // Used by sysconf(_SC_NPROCESSORS_ONLN)
 #endif
 
 #if !defined(_WIN32) && !defined(_WIN64) // Linux - Unix
@@ -48,13 +49,13 @@ typedef unsigned __int64 uint64_t;
 typedef timeval sys_time_t;
 
 inline void system_time(sys_time_t* t) { gettimeofday(t, NULL); }
-inline uint64_t time_to_msec(const sys_time_t& t) { return t.tv_sec * 1000LL + t.tv_usec / 1000; }
+inline int64_t time_to_msec(const sys_time_t& t) { return t.tv_sec * 1000LL + t.tv_usec / 1000; }
 
 #  include <pthread.h>
 typedef pthread_mutex_t Lock;
 typedef pthread_cond_t WaitCondition;
-typedef pthread_t ThreadHandle;
-typedef void*(*start_fn)(void*);
+typedef pthread_t NativeHandle;
+typedef void*(*pt_start_fn)(void*);
 
 #  define lock_init(x) pthread_mutex_init(&(x), NULL)
 #  define lock_grab(x) pthread_mutex_lock(&(x))
@@ -65,7 +66,7 @@ typedef void*(*start_fn)(void*);
 #  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,t) !pthread_create(&(x),NULL,(start_fn)f,t)
+#  define thread_create(x,f,t) !pthread_create(&(x),NULL,(pt_start_fn)f,t)
 #  define thread_join(x) pthread_join(x, NULL)
 
 #else // Windows and MinGW
@@ -74,7 +75,7 @@ typedef void*(*start_fn)(void*);
 typedef _timeb sys_time_t;
 
 inline void system_time(sys_time_t* t) { _ftime(t); }
-inline uint64_t time_to_msec(const sys_time_t& t) { return t.time * 1000LL + t.millitm; }
+inline int64_t time_to_msec(const sys_time_t& t) { return t.time * 1000LL + t.millitm; }
 
 #if !defined(NOMINMAX)
 #  define NOMINMAX // disable macros min() and max()
@@ -90,7 +91,10 @@ inline uint64_t time_to_msec(const sys_time_t& t) { return t.time * 1000LL + t.m
 // but apart from this they have the same speed performance of SRW locks.
 typedef CRITICAL_SECTION Lock;
 typedef HANDLE WaitCondition;
-typedef HANDLE ThreadHandle;
+typedef HANDLE NativeHandle;
+
+// On Windows 95 and 98 parameter lpThreadId my not be null
+inline DWORD* dwWin9xKludge() { static DWORD dw; return &dw; }
 
 #  define lock_init(x) InitializeCriticalSection(&(x))
 #  define lock_grab(x) EnterCriticalSection(&(x))
@@ -101,7 +105,7 @@ typedef HANDLE ThreadHandle;
 #  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,t) (x = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)f,t,0,NULL), x != NULL)
+#  define thread_create(x,f,t) (x = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)f,t,0,dwWin9xKludge()), x != NULL)
 #  define thread_join(x) { WaitForSingleObject(x, INFINITE); CloseHandle(x); }
 
 #endif