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//
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// TCPWriter.m
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// MYNetwork
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//
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// Created by Jens Alfke on 5/10/08.
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// Copyright 2008 Jens Alfke. All rights reserved.
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//
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#import "TCPWriter.h"
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#import "TCP_Internal.h"
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#import "Logging.h"
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#import "Test.h"
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@implementation TCPWriter
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- (void) dealloc
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{
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[_queue release];
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[_currentData release];
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[super dealloc];
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}
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- (TCPReader*) reader
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{
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return _conn.reader;
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}
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- (BOOL) isBusy
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{
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return _currentData || _queue.count > 0;
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}
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- (void) writeData: (NSData*)data
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{
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if( !_queue )
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_queue = [[NSMutableArray alloc] init];
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[_queue addObject: data];
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if( _queue.count==1 && ((NSOutputStream*)_stream).hasSpaceAvailable )
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[self _canWrite];
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}
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- (void) _canWrite
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{
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if( ! _currentData ) {
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if( _queue.count==0 ) {
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[self queueIsEmpty]; // this may call -writeData, which will call _canWrite again
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return;
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}
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_currentData = [[_queue objectAtIndex: 0] retain];
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_currentDataPos = 0;
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LogTo(TCPVerbose,@"%@ using _currentData %p (%u bytes)", self,_currentData,_currentData.length);
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[_queue removeObjectAtIndex: 0];
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}
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const uint8_t* src = _currentData.bytes;
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src += _currentDataPos;
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NSInteger len = _currentData.length - _currentDataPos;
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NSInteger written = [(NSOutputStream*)_stream write: src maxLength: len];
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if( written < 0 )
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[self _gotError];
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else if( written < len ) {
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LogTo(TCPVerbose,@"%@ wrote %i bytes (of %u) from %p", self,written,len,_currentData);
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_currentDataPos += written;
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} else {
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LogTo(TCPVerbose,@"%@ wrote %i bytes, released %p", self,written,_currentData);
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setObj(&_currentData,nil);
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}
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}
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- (void) queueIsEmpty
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{
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}
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@end
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/*
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Copyright (c) 2008, Jens Alfke <jens@mooseyard.com>. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted
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provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list of conditions
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and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this list of conditions
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and the following disclaimer in the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRI-
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BUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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