Add hyper-threading detection

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index 396942cd40939b45b6df34d64d61869bb155cffd..d91009df453748d6701ee607b177921368a7a60e 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -31,9 +31,9 @@ typedef __int8 int8_t;
 typedef unsigned __int8 uint8_t;
 typedef __int16 int16;
 typedef unsigned __int16 uint16_t;
-typedef __int32 int32;
+typedef __int32 int32_t;
 typedef unsigned __int32 uint32_t;
-typedef __int64 int64;
+typedef __int64 int64_t;
 typedef unsigned __int64 uint64_t;
 
 typedef __int16 int16_t;
@@ -41,7 +41,54 @@ typedef __int64 int64_t;
 
 #endif // !defined(_MSC_VER)
 
-// Hash keys:
+// Hash keys
 typedef uint64_t Key;
 
+// Bitboard type
+typedef uint64_t Bitboard;
+
+
+////
+//// Compiler specific defines
+////
+
+// Quiet a warning on Intel compiler
+#if !defined(__SIZEOF_INT__ )
+#define __SIZEOF_INT__ 0
+#endif
+
+// Check for 64 bits for different compilers: Intel, MSVC and gcc
+#if defined(__x86_64) || defined(_M_X64) || defined(_WIN64) || (__SIZEOF_INT__ > 4)
+#define IS_64BIT
+#endif
+
+#if defined(IS_64BIT) && (defined(__GNUC__) || defined(__INTEL_COMPILER))
+#define USE_BSFQ
+#endif
+
+// Cache line alignment specification
+#if defined(_MSC_VER) || defined(__INTEL_COMPILER)
+#define CACHE_LINE_ALIGNMENT __declspec(align(64))
+#else
+#define CACHE_LINE_ALIGNMENT  __attribute__ ((aligned(64)))
+#endif
+
+// Define a __cpuid() function for gcc compilers, for Intel and MSVC
+// is already available as an intrinsic.
+#if defined(__INTEL_COMPILER)
+#include <nmmintrin.h>
+#elif defined(_MSC_VER)
+#include <intrin.h>
+#elif defined(__GNUC__)
+inline void __cpuid(unsigned int op,
+                    unsigned int *eax, unsigned int *ebx,
+                    unsigned int *ecx, unsigned int *edx)
+{
+  *eax = op;
+  *ecx = 0;
+  __asm__("cpuid" : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
+                  : "0" (*eax), "2" (*ecx));
+}
+#endif
+
 #endif // !defined(TYPES_H_INCLUDED)