| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef _DECAF_NET_SOCKETINPUTSTREAM_H_ |
| #define _DECAF_NET_SOCKETINPUTSTREAM_H_ |
| |
| #include <decaf/io/InputStream.h> |
| #include <decaf/net/Socket.h> |
| #include <decaf/util/concurrent/Mutex.h> |
| #include <decaf/lang/Exception.h> |
| |
| namespace decaf{ |
| namespace net{ |
| |
| /** |
| * Input stream for performing reads on a socket. This |
| * class will only work properly for blocking sockets. |
| */ |
| class DECAF_API SocketInputStream : public io::InputStream { |
| private: |
| |
| // The socket handle. |
| Socket::SocketHandle socket; |
| util::concurrent::Mutex mutex; |
| bool closed; |
| |
| public: |
| |
| /** |
| * Constructor. |
| * @param socket the socket handle. |
| */ |
| SocketInputStream( Socket::SocketHandle socket ); |
| |
| /** |
| * Destructor. |
| */ |
| virtual ~SocketInputStream(); |
| |
| /** |
| * Locks the object. |
| * @throws Exception |
| */ |
| virtual void lock() throw( lang::Exception ){ |
| mutex.lock(); |
| } |
| |
| /** |
| * Unlocks the object. |
| * @throws Exception |
| */ |
| virtual void unlock() throw( lang::Exception ){ |
| mutex.unlock(); |
| } |
| |
| /** |
| * Waits on a signal from this object, which is generated |
| * by a call to Notify. Must have this object locked before |
| * calling. |
| * @throws Exception |
| */ |
| virtual void wait() throw( lang::Exception ){ |
| mutex.wait(); |
| } |
| |
| /** |
| * Waits on a signal from this object, which is generated |
| * by a call to Notify. Must have this object locked before |
| * calling. This wait will timeout after the specified time |
| * interval. |
| * @param millisecs time in millisecsonds to wait, or WAIT_INIFINITE |
| * @throws Exception |
| */ |
| virtual void wait( unsigned long millisecs ) |
| throw( lang::Exception ) { |
| |
| mutex.wait( millisecs ); |
| } |
| |
| /** |
| * Signals a waiter on this object that it can now wake |
| * up and continue. Must have this object locked before |
| * calling. |
| * @throws Exception |
| */ |
| virtual void notify() throw( lang::Exception ){ |
| mutex.notify(); |
| } |
| |
| /** |
| * Signals the waiters on this object that it can now wake |
| * up and continue. Must have this object locked before |
| * calling. |
| * @throws Exception |
| */ |
| virtual void notifyAll() throw( lang::Exception ){ |
| mutex.notifyAll(); |
| } |
| |
| /** |
| * Returns the number of bytes available on the socket to |
| * be read right now. |
| * @return The number of bytes currently available to |
| * be read on the socket. |
| */ |
| virtual std::size_t available() const throw ( io::IOException ); |
| |
| /** |
| * Reads a single byte from the buffer. If no data |
| * is available, blocks until their is. |
| * @return The next byte. |
| * @throws IOException thrown if an error occurs. |
| */ |
| virtual unsigned char read() throw ( io::IOException ); |
| |
| /** |
| * Reads an array of bytes from the buffer. If no data |
| * is available, blocks until there is. |
| * @param buffer (out) the target buffer. |
| * @param bufferSize the size of the output buffer. |
| * @return The number of bytes read. |
| * @throws IOException thrown if an error occurs. |
| */ |
| virtual int read( unsigned char* buffer, |
| std::size_t bufferSize ) |
| throw ( io::IOException ); |
| |
| /** |
| * Close - does nothing. It is the responsibility of the owner |
| * of the socket object to close it. |
| * @throws CMSException |
| */ |
| virtual void close() throw( lang::Exception ); |
| |
| /** |
| * Not supported. |
| * @throws an UnsupportedOperationException. |
| */ |
| virtual std::size_t skip( std::size_t num ) |
| throw ( io::IOException, |
| lang::exceptions::UnsupportedOperationException ); |
| |
| }; |
| |
| }} |
| |
| #endif /*_DECAF_NET_SOCKETINPUTSTREAM_H_*/ |