MemoryBarrier.hpp

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* Copyright (C) 2006, Novell, Inc. All rights reserved.
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#ifndef BLOCXX_MEMORY_BARRIER_HPP_INCLUDE_GUARD_
#define BLOCXX_MEMORY_BARRIER_HPP_INCLUDE_GUARD_
#include "blocxx/BLOCXX_config.h"
 
// The classes and functions defined in this file are not meant for general
// use, they are internal implementation details.  They may change at any time.
 
namespace BLOCXX_NAMESPACE
{
 
inline void readWriteMemoryBarrier()
{
   #if defined(__alpha)
   // DEC/COMPAQ/HP Alpha
   __asm__ __volatile__("mb");
 
   #elif defined(__HP_aCC) && defined(BLOCXX_ARCH_IA64)
   // Itanium (useable with aCC as the compiler).
   _Asm_mf();
   #elif defined(BLOCXX_ARCH_IA64)
   // Intel Itanium
   __asm__ __volatile__("mf");
 
   #elif defined(BLOCXX_ARCH_PPC) || defined(BLOCXX_ARCH_PPC64)
   // PPC/PPC64
   __asm__ __volatile__ ("sync" : : : "memory");
 
   #elif defined(BLOCXX_ARCH_S390) || defined(BLOCXX_ARCH_S390X)
   // s390/s390x
   __asm__ __volatile__ ( "bcr 15,0" : : : "memory" ); 
 
   #elif defined(BLOCXX_ARCH_X86_64) || defined(BLOCXX_ARCH_X86) || defined(BLOCXX_ARCH_HPPA20) || defined(BLOCXX_ARCH_SPARC)
   // Nothing required for these architectures.
   #else // if defined(BLOCXX_ARCH_UNKNOWN)
   #error "Unknown architecture. readWriteMemoryBarrier() must be updated"
   #endif
}
 
} // end namespace BLOCXX_NAMESPACE
 
 
#endif