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//
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// ConcurrentOperation.m
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// MYUtilities
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//
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// Created by Jens Alfke on 2/5/08.
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// Copyright 2008 Jens Alfke. All rights reserved.
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//
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#import "ConcurrentOperation.h"
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// See file:///Developer/Documentation/DocSets/com.apple.ADC_Reference_Library.CoreReference.docset/Contents/Resources/Documents/documentation/Cocoa/Reference/NSOperation_class/Reference/Reference.html
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@implementation ConcurrentOperation
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- (BOOL) isConcurrent {return YES;}
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- (void) main
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{
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Assert(NO,@"Shouldn't call -main method of ConcurrentOperation");
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}
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- (BOOL) isExecuting
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{
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return _isExecuting;
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}
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- (BOOL) isFinished
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{
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return _isFinished;
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}
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- (void) start
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{
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// don't call super!
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Log(@"Starting %@",self);
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[self willChangeValueForKey: @"isExecuting"];
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_isExecuting = YES;
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[self didChangeValueForKey: @"isExecuting"];
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}
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- (void) finish
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{
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Log(@"Finished %@",self);
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[self willChangeValueForKey: @"isExecuting"];
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[self willChangeValueForKey: @"isFinished"];
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_isExecuting = NO;
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_isFinished = YES;
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[self didChangeValueForKey: @"isFinished"];
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[self didChangeValueForKey: @"isExecuting"];
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}
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- (void) cancel
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{
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Log(@"Canceling %@",self);
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[super cancel];
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if( _isExecuting ) {
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[self willChangeValueForKey: @"isExecuting"];
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_isExecuting = NO;
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[self didChangeValueForKey: @"isExecuting"];
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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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