blocxx
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00001 /******************************************************************************* 00002 * Copyright (C) 2005, Quest Software, Inc. All rights reserved. 00003 * Copyright (C) 2006, Novell, Inc. All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions are met: 00007 * 00008 * * Redistributions of source code must retain the above copyright notice, 00009 * this list of conditions and the following disclaimer. 00010 * * Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * * Neither the name of 00014 * Quest Software, Inc., 00015 * nor Novell, Inc., 00016 * nor the names of its contributors or employees may be used to 00017 * endorse or promote products derived from this software without 00018 * specific prior written permission. 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00021 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00022 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00023 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00024 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00025 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00026 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00027 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00028 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00029 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00030 * POSSIBILITY OF SUCH DAMAGE. 00031 *******************************************************************************/ 00032 00033 00038 #ifndef BLOCXX_MEMORY_BARRIER_HPP_INCLUDE_GUARD_ 00039 #define BLOCXX_MEMORY_BARRIER_HPP_INCLUDE_GUARD_ 00040 #include "blocxx/BLOCXX_config.h" 00041 00042 // The classes and functions defined in this file are not meant for general 00043 // use, they are internal implementation details. They may change at any time. 00044 00045 namespace BLOCXX_NAMESPACE 00046 { 00047 00052 inline void readWriteMemoryBarrier() 00053 { 00054 #if defined(__alpha) 00055 // DEC/COMPAQ/HP Alpha 00056 __asm__ __volatile__("mb"); 00057 00058 #elif defined(__HP_aCC) && defined(BLOCXX_ARCH_IA64) 00059 // Itanium (useable with aCC as the compiler). 00060 _Asm_mf(); 00061 #elif defined(BLOCXX_ARCH_IA64) 00062 // Intel Itanium 00063 __asm__ __volatile__("mf"); 00064 00065 #elif defined(BLOCXX_ARCH_PPC) || defined(BLOCXX_ARCH_PPC64) 00066 // PPC/PPC64 00067 __asm__ __volatile__ ("sync" : : : "memory"); 00068 00069 #elif defined(BLOCXX_ARCH_S390) || defined(BLOCXX_ARCH_S390X) 00070 // s390/s390x 00071 __asm__ __volatile__ ( "bcr 15,0" : : : "memory" ); 00072 00073 #elif defined(BLOCXX_ARCH_X86_64) || defined(BLOCXX_ARCH_X86) || defined(BLOCXX_ARCH_HPPA20) || defined(BLOCXX_ARCH_SPARC) 00074 // Nothing required for these architectures. 00075 #else // if defined(BLOCXX_ARCH_UNKNOWN) 00076 #error "Unknown architecture. readWriteMemoryBarrier() must be updated" 00077 #endif 00078 } 00079 00080 } // end namespace BLOCXX_NAMESPACE 00081 00082 00083 #endif 00084 00085