Kernel.h

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// $Header: /tmp/svngaudi/tmp.jEpFh25751/Gaudi/GaudiKernel/GaudiKernel/Kernel.h,v 1.15 2006/05/02 13:03:03 hmd Exp $
#ifndef GAUDIKERNEL_KERNEL_H
#define GAUDIKERNEL_KERNEL_H

// Some pragmas to avoid warnings in VisualC
#ifdef _WIN32
  // Disable warning C4786: identifier was truncated to '255' characters in the debug information
  #pragma warning ( disable : 4786 )
  // Disable warning C4291: no matching operator delete found; memory will not be freed if initialization throws an exception
  #pragma warning ( disable : 4291 )
  // Disable warning C4250: inheritance via dominance
  #pragma warning ( disable : 4250 )
#endif


// Large integer definition depends of the platform
#ifdef _WIN32
#ifndef NO_LONGLONG_TYPEDEF
  typedef __int64 longlong;
  typedef unsigned __int64 ulonglong;
#endif

  #ifndef LONGLONG_MAX
    #define LONGLONG_MAX 0x7FFFFFFFFFFFFFFFLL
  #endif
  #ifndef LONGLONG_MIN
    #define LONGLONG_MIN 0x8000000000000000LL
  #endif

  #ifndef ULONGLONG_MAX
    #define ULONGLONG_MAX 0xFFFFFFFFFFFFFFFFLL
  #endif
  #ifndef ULONGLONG_MIN
    #define ULONGLONG_MIN 0x0000000000000000LL
  #endif
#elif defined(__linux) || defined(__APPLE__)
#ifndef NO_LONGLONG_TYPEDEF
  typedef long long int longlong;
  typedef unsigned long long int ulonglong;
#endif

  #ifndef LONGLONG_MAX
    #define LONGLONG_MAX 0x7FFFFFFFFFFFFFFFLL
  #endif
  #ifndef LONGLONG_MIN
    #define LONGLONG_MIN 0x8000000000000000LL
  #endif

  #ifndef ULONGLONG_MAX
    #define ULONGLONG_MAX 0xfFFFFFFFFFFFFFFFLL
  #endif
  #ifndef ULONGLONG_MIN
    #define ULONGLONG_MIN 0x0000000000000000LL
  #endif
#else
  // This will not really work !!
  struct __longlong { public: long __data[2]; };
  typedef __longlong longlong;
  typedef __longlong ulonglong;
  static const __longlong LONGLONG_MAX = {0x7FFFFFFF, 0xFFFFFFFF};
  static const __longlong LONGLONG_MIN = {0x80000000, 0x00000000};
  static const __ulonglong ULONGLONG_MAX = {0xFFFFFFFF, 0xFFFFFFFF};
  static const __ulonglong ULONGLONG_MIN = {0x00000000, 0x00000000};
#endif    // linux

#ifdef _WIN32
  #define TEMPLATE_SPECIALIZATION template <>
#elif defined(__linux) || defined(__APPLE__)
  #define TEMPLATE_SPECIALIZATION
#endif

// ---------------------------------- Symbol visibility macros (begin)
// Enabled on in Gaudi v21 mode
#if !defined(GAUDI_V20_COMPAT) || defined(G21_HIDE_SYMBOLS)
// These macros will allow selection on exported symbols
// taken from http://gcc.gnu.org/wiki/Visibility
#if __GNUC__ >= 4 && ! defined(__CINT__)
#  define GAUDI_HASCLASSVISIBILITY
#endif

#ifdef _WIN32
/*
#  define GAUDI_IMPORT __declspec(dllimport)
#  define GAUDI_EXPORT __declspec(dllexport)
#  define GAUDI_LOCAL
*/
// The symbol visibility is disabled on Win32 because it is not possible to
// make coexists the gcc and VC ways.
#    define GAUDI_IMPORT
#    define GAUDI_EXPORT
#    define GAUDI_LOCAL
#else
#  if defined(GAUDI_HASCLASSVISIBILITY)
#    define GAUDI_IMPORT __attribute__((visibility("default")))
#    define GAUDI_EXPORT __attribute__((visibility("default")))
#    define GAUDI_LOCAL  __attribute__((visibility("hidden")))
#  else
#    define GAUDI_IMPORT
#    define GAUDI_EXPORT
#    define GAUDI_LOCAL
#  endif
#endif

// Define GAUDI_API for DLL builds
#ifdef GAUDI_LINKER_LIBRARY
#define GAUDI_API GAUDI_EXPORT
#else
#define GAUDI_API GAUDI_IMPORT
#endif
#else
// Dummy definitions for the backward compatibility mode.
#define GAUDI_API
#define GAUDI_IMPORT
#define GAUDI_EXPORT
#define GAUDI_LOCAL
#endif // GAUDI_V20_COMPAT
// ---------------------------------- Symbol visibility macros (end)


// -------------- LIKELY/UNLIKELY macros (begin)
// Use compiler hinting to improve branch prediction for linux
#ifdef __GNUC__
#  define LIKELY(x)       __builtin_expect((x),1)
#  define UNLIKELY(x)     __builtin_expect((x),0)
#else
#  define LIKELY(x)       x
#  define UNLIKELY(x)     x
#endif
// -------------- LIKELY/UNLIKELY macros (end)

#endif  // GAUDIKERNEL_KERNEL_H