src/OFStreamObserver.h

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFObject.h"

#ifdef _WIN32
# ifndef _WIN32_WINNT
#  define _WIN32_WINNT 0x0501
# endif
# include <ws2tcpip.h>
# include <windows.h>
#endif

@class OFStream;
@class OFMutableArray;
@class OFMutableDictionary;
@class OFDataArray;
@class OFMutex;

#ifndef OF_STREAM_OBSERVER_M
@protocol OFStreamObserverDelegate <OFObject>
#else
@protocol OFStreamObserverDelegate
#endif
#ifdef OF_HAVE_OPTIONAL_PROTOCOLS
@optional
#endif

- (void)streamIsReadyForReading: (OFStream*)stream;

- (void)streamIsReadyForWriting: (OFStream*)stream;

- (void)streamDidReceiveException: (OFStream*)stream;
@end

@interface OFStreamObserver: OFObject
{
        OFMutableArray *readStreams;
        OFMutableArray *writeStreams;
        OFStream **FDToStream;
        size_t maxFD;
        OFMutableArray *queue;
        OFDataArray *queueInfo, *queueFDs;
        id <OFStreamObserverDelegate> delegate;
        int cancelFD[2];
#ifdef _WIN32
        struct sockaddr_in cancelAddr;
#endif
        OFMutex *mutex;
}

#ifdef OF_HAVE_PROPERTIES
@property (assign) id <OFStreamObserverDelegate> delegate;
#endif

+ observer;

- (id <OFStreamObserverDelegate>)delegate;

- (void)setDelegate: (id <OFStreamObserverDelegate>)delegate;

- (void)addStreamForReading: (OFStream*)stream;

- (void)addStreamForWriting: (OFStream*)stream;

- (void)removeStreamForReading: (OFStream*)stream;

- (void)removeStreamForWriting: (OFStream*)stream;

- (void)observe;

- (BOOL)observeWithTimeout: (int)timeout;

- (void)_addFileDescriptorForReading: (int)fd;
- (void)_addFileDescriptorForWriting: (int)fd;
- (void)_removeFileDescriptorForReading: (int)fd;
- (void)_removeFileDescriptorForWriting: (int)fd;
- (void)_processQueue;
- (BOOL)_processCache;
@end

@interface OFObject (OFStreamObserverDelegate) <OFStreamObserverDelegate>
@end