Tru64PlatformUtils.cpp
上传用户:zhuqijet
上传日期:2013-06-25
资源大小:10074k
文件大小:18k
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Id: Tru64PlatformUtils.cpp,v 1.10 2003/05/15 18:37:49 knoaman Exp $
- */
- // ---------------------------------------------------------------------------
- // Includes
- // ---------------------------------------------------------------------------
- #if !defined (APP_NO_THREADS)
- #include <pthread.h>
- #endif // APP_NO_THREADS
- #include <stdio.h>
- #include <stdlib.h>
- #include <time.h>
- #include <unistd.h>
- #include <xercesc/util/Janitor.hpp>
- #include <xercesc/util/PlatformUtils.hpp>
- #include <xercesc/util/RuntimeException.hpp>
- #include <xercesc/util/Mutexes.hpp>
- #include <xercesc/util/XMLString.hpp>
- #include <xercesc/util/XMLUni.hpp>
- #include <xercesc/util/XMLUniDefs.hpp>
- #include <xercesc/util/PanicHandler.hpp>
- //
- // These control which transcoding service is used by the Tru64 version.
- // They allow this to be controlled from the build process by just defining
- // one of these values.
- //
- #if defined (XML_USE_ICU_TRANSCODER)
- #include <xercesc/util/Transcoders/ICU/ICUTransService.hpp>
- #else // use native transcoder
- #include <xercesc/util/Transcoders/Iconv/IconvTransService.hpp>
- #endif
- //
- // These control which message loading service is used by the Tru64 version.
- // They allow this to be controlled from the build process by just defining
- // one of these values.
- //
- #if defined (XML_USE_ICU_MESSAGELOADER)
- #include <xercesc/util/MsgLoaders/ICU/ICUMsgLoader.hpp>
- #elif defined (XML_USE_ICONV_MESSAGELOADER)
- #include <xercesc/util/MsgLoaders/MsgCatalog/MsgCatalogLoader.hpp>
- #else // use In-memory message loader
- #include <xercesc/util/MsgLoaders/InMemory/InMemMsgLoader.hpp>
- #endif
- #if defined (XML_USE_NETACCESSOR_LIBWWW)
- #include <xercesc/util/NetAccessors/libWWW/LibWWWNetAccessor.hpp>
- #elif defined (XML_USE_NETACCESSOR_SOCKET)
- #include <xercesc/util/NetAccessors/Socket/SocketNetAccessor.hpp>
- #endif
- XERCES_CPP_NAMESPACE_BEGIN
- // ---------------------------------------------------------------------------
- // XMLPlatformUtils: Private Static Methods
- // ---------------------------------------------------------------------------
- XMLNetAccessor* XMLPlatformUtils::makeNetAccessor()
- #if defined (XML_USE_NETACCESSOR_LIBWWW)
- {
- return new LibWWWNetAccessor();
- }
- #elif defined (XML_USE_NETACCESSOR_SOCKET)
- {
- return new SocketNetAccessor();
- }
- #else
- {
- return 0;
- }
- #endif
- //
- // This method is called by the platform independent part of this class
- // when client code asks to have one of the supported message sets loaded.
- // In our case, we use the ICU based message loader mechanism.
- //
- XMLMsgLoader* XMLPlatformUtils::loadAMsgSet(const XMLCh* const msgDomain)
- {
- XMLMsgLoader* retVal;
- try
- {
- #if defined (XML_USE_ICU_MESSAGELOADER)
- retVal = new ICUMsgLoader(msgDomain);
- #elif defined (XML_USE_ICONV_MESSAGELOADER)
- retVal = new MsgCatalogLoader(msgDomain);
- #else
- retVal = new InMemMsgLoader(msgDomain);
- #endif
- }
- catch(...)
- {
- panic(PanicHandler::Panic_CantLoadMsgDomain);
- }
- return retVal;
- }
- //
- // This method is called very early in the bootstrapping process. This guy
- // must create a transcoding service and return it. It cannot use any string
- // methods, any transcoding services, throw any exceptions, etc... It just
- // makes a transcoding service and returns it, or returns zero on failure.
- //
- XMLTransService* XMLPlatformUtils::makeTransService()
- #if defined (XML_USE_ICU_TRANSCODER)
- {
- return new ICUTransService;
- }
- #elif defined (XML_USE_ICONV_TRANSCODER)
- {
- return new IconvTransService;
- }
- #else // Use Native transcoding service
- {
- return new IconvTransService;
- }
- #endif
- // ---------------------------------------------------------------------------
- // XMLPlatformUtils: The panic method
- // ---------------------------------------------------------------------------
- void XMLPlatformUtils::panic(const PanicHandler::PanicReasons reason)
- {
- fgUserPanicHandler? fgUserPanicHandler->panic(reason) : fgDefaultPanicHandler->panic(reason);
- }
- // ---------------------------------------------------------------------------
- // XMLPlatformUtils: File Methods
- // ---------------------------------------------------------------------------
- unsigned int XMLPlatformUtils::curFilePos(FileHandle theFile)
- {
- // Get the current position
- int curPos = ftell( (FILE*)theFile);
- if (curPos == -1)
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotGetSize);
- return (unsigned int)curPos;
- }
- void XMLPlatformUtils::closeFile(FileHandle theFile)
- {
- if (fclose((FILE*) theFile))
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotCloseFile);
- }
- unsigned int XMLPlatformUtils::fileSize(FileHandle theFile)
- {
- // Get the current position
- long int curPos = ftell((FILE*) theFile);
- if (curPos == -1)
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotGetCurPos);
- // Seek to the end and save that value for return
- if (fseek( (FILE*) theFile, 0, SEEK_END) )
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotSeekToEnd);
- long int retVal = ftell((FILE*) theFile);
- if (retVal == -1)
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotSeekToEnd);
- // And put the pointer back
- if (fseek((FILE*) theFile, curPos, SEEK_SET))
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotSeekToPos);
- return (unsigned int)retVal;
- }
- FileHandle XMLPlatformUtils::openFile(const char* const fileName)
- {
- FileHandle retVal = (FILE*)fopen( fileName , "rb" );
- if (retVal == NULL)
- return 0;
- return retVal;
- }
- FileHandle XMLPlatformUtils::openFile(const XMLCh* const fileName)
- {
- const char* tmpFileName = XMLString::transcode(fileName, fgMemoryManager);
- ArrayJanitor<char> janText((char*)tmpFileName, fgMemoryManager);
- FileHandle retVal = (FILE*)fopen( tmpFileName , "rb" );
- if (retVal == NULL)
- return 0;
- return retVal;
- }
- FileHandle XMLPlatformUtils::openFileToWrite(const XMLCh* const fileName)
- {
- const char* tmpFileName = XMLString::transcode(fileName, fgMemoryManager);
- ArrayJanitor<char> janText((char*)tmpFileName, fgMemoryManager);
- return fopen( tmpFileName , "wb" );
- }
- FileHandle XMLPlatformUtils::openFileToWrite(const char* const fileName)
- {
- return fopen( fileName , "wb" );
- }
- unsigned int XMLPlatformUtils::readFileBuffer(FileHandle theFile,
- const unsigned int toRead,
- XMLByte* const toFill)
- {
- size_t noOfItemsRead =
- fread((void*) toFill, 1, toRead, (FILE*) theFile);
- if(ferror((FILE*) theFile))
- {
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotReadFromFile);
- }
- return (unsigned int) noOfItemsRead;
- }
- void
- XMLPlatformUtils::writeBufferToFile( FileHandle const theFile
- , long toWrite
- , const XMLByte* const toFlush)
- {
- if (!theFile ||
- (toWrite <= 0 ) ||
- !toFlush )
- return;
- const XMLByte* tmpFlush = (const XMLByte*) toFlush;
- size_t bytesWritten = 0;
- while (true)
- {
- bytesWritten=fwrite(tmpFlush, sizeof(XMLByte), toWrite, (FILE*)theFile);
- if(ferror((FILE*)theFile))
- {
- ThrowXML(XMLPlatformUtilsException, XMLExcepts::File_CouldNotWriteToFile);
- }
- if (bytesWritten < toWrite) //incomplete write
- {
- tmpFlush+=bytesWritten;
- toWrite-=bytesWritten;
- bytesWritten=0;
- }
- else
- return;
- }
- return;
- }
- void XMLPlatformUtils::resetFile(FileHandle theFile)
- {
- // Seek to the start of the file
- if (fseek((FILE*) theFile, 0, SEEK_SET))
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotResetFile);
- }
- // ---------------------------------------------------------------------------
- // 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, fgMemoryManager);
- ArrayJanitor<char> janText(newSrc, fgMemoryManager);
- // 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)
- {
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotGetBasePathName);
- }
- return XMLString::transcode(absPath, manager);
- }
- bool XMLPlatformUtils::isRelative(const XMLCh* const toCheck)
- {
- // 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 "TestFile.xml" and an NT Lan type remote path
- // that starts with a node like "\MyNodeTestFile.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 + 1];
- char *curDir = getcwd(&dirBuf[0], PATH_MAX + 1);
- if (!curDir)
- {
- ThrowXML(XMLPlatformUtilsException,
- XMLExcepts::File_CouldNotGetBasePathName);
- }
- return XMLString::transcode(curDir, manager);
- }
- inline bool XMLPlatformUtils::isAnySlash(XMLCh c)
- {
- return ( chBackSlash == c || chForwardSlash == c);
- }
- // ---------------------------------------------------------------------------
- // XMLPlatformUtils: Timing Methods
- // ---------------------------------------------------------------------------
- unsigned long XMLPlatformUtils::getCurrentMillis()
- {
- timespec ts;
- clock_gettime (CLOCK_REALTIME, &ts);
- return (unsigned long) ((ts.tv_sec * 1000) + (ts.tv_nsec / 1000000));
- }
- #if !defined (APP_NO_THREADS)
- // ---------------------------------------------------------------------------
- // XMLPlatformUtils: Platform init method
- // ---------------------------------------------------------------------------
- static pthread_mutex_t* gAtomicOpMutex =0 ;
- void XMLPlatformUtils::platformInit()
- {
- //
- // The gAtomicOpMutex mutex needs to be created
- // because compareAndSwap and incrementlocation and decrementlocation
- // does not have the atomic system calls for usage
- // Normally, mutexes are created on first use, but there is a
- // circular dependency between compareAndExchange() and
- // mutex creation that must be broken.
- gAtomicOpMutex = new pthread_mutex_t;
- if (pthread_mutex_init(gAtomicOpMutex, NULL)) {
- delete gAtomicOpMutex;
- gAtomicOpMutex = 0;
- panic( PanicHandler::Panic_SystemInit );
- }
- }
- // -----------------------------------------------------------------------
- // Mutex methods
- // -----------------------------------------------------------------------
- class RecursiveMutex
- {
- public:
- pthread_mutex_t mutex;
- int recursionCount;
- pthread_t tid;
- RecursiveMutex()
- {
- if (pthread_mutex_init(&mutex, NULL))
- ThrowXML(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotCreate);
- recursionCount = 0;
- tid = 0;
- };
- ~RecursiveMutex()
- {
- if (pthread_mutex_destroy(&mutex))
- ThrowXML(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotDestroy);
- };
- void lock()
- {
- if (pthread_equal(tid, pthread_self()))
- {
- recursionCount++;
- return;
- }
- if (pthread_mutex_lock(&mutex) != 0)
- ThrowXML(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotLock);
- tid = pthread_self();
- recursionCount = 1;
- };
- void unlock()
- {
- if (--recursionCount > 0)
- return;
- if (pthread_mutex_unlock(&mutex) != 0)
- ThrowXML(XMLPlatformUtilsException, XMLExcepts::Mutex_CouldNotUnlock);
- tid = 0;
- };
- };
- void* XMLPlatformUtils::makeMutex()
- {
- return new RecursiveMutex;
- };
- void XMLPlatformUtils::closeMutex(void* const mtxHandle)
- {
- if (mtxHandle == NULL)
- return;
- RecursiveMutex *rm = (RecursiveMutex *)mtxHandle;
- delete rm;
- };
- void XMLPlatformUtils::lockMutex(void* const mtxHandle)
- {
- if (mtxHandle == NULL)
- return;
- RecursiveMutex *rm = (RecursiveMutex *)mtxHandle;
- rm->lock();
- }
- void XMLPlatformUtils::unlockMutex(void* const mtxHandle)
- {
- if (mtxHandle == NULL)
- return;
- RecursiveMutex *rm = (RecursiveMutex *)mtxHandle;
- rm->unlock();
- }
- // -----------------------------------------------------------------------
- // Miscellaneous synchronization methods
- // -----------------------------------------------------------------------
- //atomic system calls in Solaris is only restricted to kernel libraries
- //So, to make operations thread safe we implement static mutex and lock
- //the atomic operations. It makes the process slow but what's the alternative!
- void* XMLPlatformUtils::compareAndSwap (void** toFill,
- const void* const newValue,
- const void* const toCompare)
- {
- //return ((void*)cas32( (uint32_t*)toFill, (uint32_t)toCompare, (uint32_t)newValue) );
- // the below calls are temporarily made till the above functions are part of user library
- // Currently its supported only in the kernel mode
- if (pthread_mutex_lock( gAtomicOpMutex))
- panic(PanicHandler::Panic_SynchronizationErr);
- void *retVal = *toFill;
- if (*toFill == toCompare)
- *toFill = (void *)newValue;
- if (pthread_mutex_unlock( gAtomicOpMutex))
- panic(PanicHandler::Panic_SynchronizationErr);
- return retVal;
- }
- int XMLPlatformUtils::atomicIncrement(int &location)
- {
- //return (int)atomic_add_32_nv( (uint32_t*)&location, 1);
- if (pthread_mutex_lock( gAtomicOpMutex))
- panic(PanicHandler::Panic_SynchronizationErr);
- int tmp = ++location;
- if (pthread_mutex_unlock( gAtomicOpMutex))
- panic(PanicHandler::Panic_SynchronizationErr);
- return tmp;
- }
- int XMLPlatformUtils::atomicDecrement(int &location)
- {
- //return (int)atomic_add_32_nv( (uint32_t*)&location, -1);
- if (pthread_mutex_lock( gAtomicOpMutex))
- panic(PanicHandler::Panic_SynchronizationErr);
-
- int tmp = --location;
- if (pthread_mutex_unlock( gAtomicOpMutex))
- panic(PanicHandler::Panic_SynchronizationErr);
- return tmp;
- }
- #else // #if !defined (APP_NO_THREADS)
- void XMLPlatformUtils::platformInit()
- {
- // do nothing
- }
- void XMLPlatformUtils::closeMutex(void* const mtxHandle)
- {
- }
- void XMLPlatformUtils::lockMutex(void* const mtxHandle)
- {
- }
- void* XMLPlatformUtils::makeMutex()
- {
- return 0;
- }
- void XMLPlatformUtils::unlockMutex(void* const mtxHandle)
- {
- }
- 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()
- {
- return (FileHandle)fdopen(dup(0), "rb");
- }
- void XMLPlatformUtils::platformTerm()
- {
- #if !defined (APP_NO_THREADS)
- pthread_mutex_destroy(gAtomicOpMutex);
- delete gAtomicOpMutex;
- gAtomicOpMutex = 0;
- #endif
- }
- #include <xercesc/util/LogicalPath.c>
- XERCES_CPP_NAMESPACE_END