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Viewing changes to src/xercesc/util/PlatformUtils.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Jay Berkenbilt
  • Date: 2009-12-05 14:58:32 UTC
  • mfrom: (2.1.2 sid)
  • Revision ID: james.westby@ubuntu.com-20091205145832-378dg3x72mdzfzup
Tags: 3.1.0~rc1-1
* New upstream release; public release candidate uploaded at request of
  upstream.
* Updated source format to '3.0 (quilt)'

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src/xercesc/util/PlatformUtils.cpp
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 */
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/*
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 * $Id: PlatformUtils.cpp 695427 2008-09-15 11:05:36Z borisk $
 
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 * $Id: PlatformUtils.cpp 808881 2009-08-28 13:21:24Z amassari $
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 *
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 */
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#if HAVE_SYS_TIMEB_H
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#       include <sys/timeb.h>
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#endif
 
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#if HAVE_CPUID_H
 
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#   include <cpuid.h>
 
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#endif
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#include <xercesc/util/Mutexes.hpp>
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#include <xercesc/util/PlatformUtils.hpp>
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#include <xercesc/util/XMLInitializer.hpp>
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#include <xercesc/internal/MemoryManagerImpl.hpp>
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#if XERCES_HAVE_INTRIN_H
 
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#   include <intrin.h>
 
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#endif
 
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#include <xercesc/util/XMLFileMgr.hpp>
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#if XERCES_USE_FILEMGR_POSIX
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#       include <xercesc/util/FileManagers/PosixFileMgr.hpp>
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XMLMutex*               XMLPlatformUtils::fgAtomicMutex = 0;
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bool                    XMLPlatformUtils::fgXMLChBigEndian = true;
 
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bool                    XMLPlatformUtils::fgSSE2ok = false;
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// ---------------------------------------------------------------------------
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//  XMLPlatformUtils: Init/term methods
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    endianTest.ch = 1;
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    fgXMLChBigEndian = (endianTest.ar[sizeof(XMLCh)-1] == 1);
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    // Determine if we can use SSE2 functions
 
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#if defined(XERCES_HAVE_CPUID_INTRINSIC)
 
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    int CPUInfo[4]={0};
 
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    __cpuid(CPUInfo, 1);
 
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    if(CPUInfo[3] & (1UL << 26))
 
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        fgSSE2ok = true;
 
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    else
 
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        fgSSE2ok = false;
 
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#elif defined(XERCES_HAVE_GETCPUID)
 
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    unsigned int eax, ebx, ecx, edx;
 
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    if(!__get_cpuid (1, &eax, &ebx, &ecx, &edx) || (edx & (1UL << 26))==0)
 
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        fgSSE2ok = false;
 
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    else
 
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        fgSSE2ok = true;
 
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#elif defined(XERCES_HAVE_SSE2_INTRINSIC)
 
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    // if we cannot find out at runtime, assume the define has it right
 
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    fgSSE2ok = true;
 
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#else
 
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    fgSSE2ok = false;
 
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#endif
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    // Initialize the platform-specific mutex and file mgrs
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    fgMutexMgr          = makeMutexMgr(fgMemoryManager);