InputStream.cpp
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上传日期:2018-11-18
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文件大小:2k
- /*
- * OpenKore C++ Standard Library
- * Copyright (C) 2006 VCL
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301 USA
- */
- #include "InputStream.h"
- #include "../Threading/MutexLocker.h"
- namespace OSL {
- namespace {
- /**
- * @internal
- * A thread-safe wrapper class around an InputStream,
- * used to implement InputStream::createThreadSafe()
- */
- class ThreadSafeInputStream: public InputStream {
- private:
- mutable Mutex mutex;
- InputStream *wrapped;
- public:
- ThreadSafeInputStream(InputStream *wrapped) {
- this->wrapped = wrapped;
- wrapped->ref();
- }
- ~ThreadSafeInputStream() {
- wrapped->unref();
- }
- virtual void
- close() {
- MutexLocker lock(mutex);
- wrapped->close();
- }
- virtual bool
- eof() const throw(IOException) {
- MutexLocker lock(mutex);
- return wrapped->eof();
- }
- virtual int
- read(char *buffer, unsigned int size) throw(IOException) {
- MutexLocker lock(mutex);
- return wrapped->read(buffer, size);
- }
- };
- }
- InputStream *
- InputStream::createThreadSafe() throw() {
- return new ThreadSafeInputStream(this);
- }
- }