aixplatformutils.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 525 行 · 第 1/2 页

        {
            tmpFlush+=bytesWritten;
            toWrite-=bytesWritten;
            bytesWritten=0;
        }
        else
            return;
    }

    return;
}

void XMLPlatformUtils::resetFile(FileHandle theFile
                                 , MemoryManager* const manager)
{
    // Seek to the start of the file
    if (fseek((FILE*)theFile, 0, SEEK_SET) )
        ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotResetFile, manager);
}

// ---------------------------------------------------------------------------
//  XMLPlatformUtils: File system methods
// ---------------------------------------------------------------------------
XMLCh* XMLPlatformUtils::getFullPath(const XMLCh* const srcPath,
                                     MemoryManager* const manager)
{
    //
    //  NOTE: The path provided has always already been opened successfully,
    //  so we know that its not some pathological freaky path. It comes in
    //  in native format, and goes out as Unicode always
    //
    char* newSrc = XMLString::transcode(srcPath, manager);
    ArrayJanitor<char> janText(newSrc, manager);

    // Use a local buffer that is big enough for the largest legal path
    char absPath[PATH_MAX + 1];
    //get the absolute path
    char* retPath = realpath(newSrc, &absPath[0]);

    if (!retPath)
    {
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotGetBasePathName, manager);
    }
    return XMLString::transcode(absPath, manager);
}

bool XMLPlatformUtils::isRelative(const XMLCh* const toCheck
                                  , MemoryManager* const manager)
{
    // Check for pathological case of empty path
    if (!toCheck[0])
        return false;

    //
    //  If it starts with a slash, then it cannot be relative. This covers
    //  both something like "\Test\File.xml" and an NT Lan type remote path
    //  that starts with a node like "\\MyNode\Test\File.xml".
    //
    if (toCheck[0] == XMLCh('/'))
        return false;

    // Else assume its a relative path
    return true;
}

XMLCh* XMLPlatformUtils::getCurrentDirectory(MemoryManager* const manager)
{
    char  dirBuf[PATH_MAX + 2];
    char  *curDir = getcwd(&dirBuf[0], PATH_MAX + 1);

    if (!curDir)
    {
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotGetBasePathName, manager);
    }

    return XMLString::transcode(curDir, manager);
}

inline bool XMLPlatformUtils::isAnySlash(XMLCh c) 
{
    return ( chBackSlash == c || chForwardSlash == c);
}

// ---------------------------------------------------------------------------
//  XMLPlatformUtils: Timing Methods
// ---------------------------------------------------------------------------
unsigned long XMLPlatformUtils::getCurrentMillis()
{
    timeb aTime;
    ftime(&aTime);
    return (unsigned long)(aTime.time*1000 + aTime.millitm);

}

// -----------------------------------------------------------------------
//  Mutex methods
// -----------------------------------------------------------------------
#ifndef APP_NO_THREADS
void XMLPlatformUtils::closeMutex(void* const mtxHandle)
{
    if (mtxHandle == NULL)
        return;
    if (pthread_mutex_destroy( (pthread_mutex_t*)mtxHandle))
    {
        ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotDestroy, fgMemoryManager);
    }
    if ( (pthread_mutex_t*)mtxHandle)
        delete (pthread_mutex_t*) mtxHandle;
}
void XMLPlatformUtils::lockMutex(void* const mtxHandle)
{
    if (mtxHandle == NULL)
        return;
    if (pthread_mutex_lock( (pthread_mutex_t*)mtxHandle))
    {
        ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotLock, fgMemoryManager);
    }

}
void* XMLPlatformUtils::makeMutex()
{
    pthread_mutex_t* mutex = new pthread_mutex_t;
    if (mutex ==  NULL)
    {
        ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotCreate, fgMemoryManager);
    }
    pthread_mutexattr_t*  attr = new pthread_mutexattr_t;
#if defined(XML_USE_DCE)
    pthread_mutexattr_create(attr);
    pthread_mutexattr_setkind_np(attr, MUTEX_RECURSIVE_NP);
    if (pthread_mutex_init(mutex, *attr))
    {
          ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotCreate, fgMemoryManager);
    }
    pthread_mutexattr_delete(attr);
#else
    pthread_mutexattr_init(attr);
    #if defined(XML_AIX43)
        pthread_mutexattr_settype(attr, PTHREAD_MUTEX_RECURSIVE);
    #else
        pthread_mutexattr_setkind_np(attr, MUTEX_RECURSIVE_NP);
    #endif
    if (pthread_mutex_init(mutex, attr))
    {
        ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotCreate, fgMemoryManager);
    }
    pthread_mutexattr_destroy(attr);
#endif
    delete attr;
    return (void*)(mutex);
}
void XMLPlatformUtils::unlockMutex(void* const mtxHandle)
{
    if (mtxHandle == NULL)
        return;
    if (pthread_mutex_unlock( (pthread_mutex_t*)mtxHandle))
    {
        ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotUnlock, fgMemoryManager);
    }
}

#else // #ifndef APP_NO_THREADS

void XMLPlatformUtils::closeMutex(void* const mtxHandle)
{
}

void XMLPlatformUtils::lockMutex(void* const mtxHandle)
{
}

void* XMLPlatformUtils::makeMutex()
{
        return 0;
}

void XMLPlatformUtils::unlockMutex(void* const mtxHandle)
{
}

#endif // APP_NO_THREADS

#ifndef APP_NO_THREADS

// -----------------------------------------------------------------------
//  Miscellaneous synchronization methods
// -----------------------------------------------------------------------
void* XMLPlatformUtils::compareAndSwap ( void**      toFill ,
                    const void* const newValue ,
                    const void* const toCompare)
{
#if defined (XML_BITSTOBUILD_64)
    boolean_t boolVar = compare_and_swaplp((atomic_l)toFill, (long*)&toCompare, (long)newValue );
#else
    boolean_t boolVar = compare_and_swap((atomic_p)toFill, (int *)&toCompare, (int)newValue );
#endif

    return (void *)toCompare;
}

int XMLPlatformUtils::atomicIncrement(int &location)
{
    int retVal = fetch_and_add( (atomic_p)&location, 1);
    return retVal+1;
}
int XMLPlatformUtils::atomicDecrement(int &location)
{
    int retVal = fetch_and_add( (atomic_p)&location, -1);
    return retVal-1;
}

#else

// -----------------------------------------------------------------------
//  Miscellaneous synchronization methods
// -----------------------------------------------------------------------

void* XMLPlatformUtils::compareAndSwap ( void**      toFill,
                                   const void* const newValue,
                                   const void* const toCompare)
{
    void *retVal = *toFill;
    if (*toFill == toCompare)
       *toFill = (void *)newValue;
    return retVal;
}

int XMLPlatformUtils::atomicIncrement(int &location)
{
    return ++location;
}

int XMLPlatformUtils::atomicDecrement(int &location)
{
    return --location;
}

#endif // APP_NO_THREADS

FileHandle XMLPlatformUtils::openStdInHandle(MemoryManager* const)
{
    return (FileHandle)fdopen(dup(0), "rb");
}

void XMLPlatformUtils::platformTerm()
{
    // We don't have any termination requirements at this time
}

/**************** Beginning of code attic *******************************
void XMLPlatformUtils::platformInit()
{
}
********************* End of code attic *******************************/

#include <xercesc/util/LogicalPath.c>

XERCES_CPP_NAMESPACE_END