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//
// Lynkeos
// $Id$
//
// Created by Jean-Etienne LAMIAUD on Sun Nov 13 2005.
// Copyright (c) 2005-2019. Jean-Etienne LAMIAUD
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#include "MyDocument.h"
#include "MyProcessingThread.h"
NSString * const K_PROCESS_CONNECTION = @"prCnx";
NSString * const K_PROCESS_CLASS_KEY = @"prClass";
NSString * const K_PROCESS_ENUMERATOR_KEY = @"prEnum";
NSString * const K_PROCESS_ITEM_KEY = @"prItem";
NSString * const K_PROCESS_PARAMETERS_KEY = @"param";
/*!
* @abstract Private methods of MyProcessingThread class
*/
@interface MyProcessingThread(Private)
/*!
* @abstract Thread controller initialization.
* @param attributes Thread attributes in a dictionary
* @param document The document which launch this thread.
* @param cnx The connection with the main thread
*/
- (id) initWithAttributes: (NSDictionary*)attributes
document: (MyDocument*)document
connection: (LynkeosThreadConnection*)cnx;
/*!
* @abstract Process all the items in the list
* @discussion The loop exits when the last item is processed or if the main
* thread stopped the processing.
*
* The run loop is run at each iteration to allow inter-threads method call.
* The run loop is just queried for a pending inter-thread message.
*/
- (void) processList ;
@end
@implementation MyProcessingThread(Private)
- (id) initWithAttributes :(NSDictionary*)attributes
document :(MyDocument*)document
connection: (LynkeosThreadConnection*)cnx
{
if ( (self = [super init]) != nil )
{
_document = document;
_processEnded = NO;
_itemList = [[attributes objectForKey:K_PROCESS_ENUMERATOR_KEY] retain];
_item = [[attributes objectForKey:K_PROCESS_ITEM_KEY] retain];
NSAssert( _itemList == nil || _item == nil,
@"Cannot process a list and an item");
_processingInstance =
[[[attributes objectForKey: K_PROCESS_CLASS_KEY] alloc]
initWithDocument: document
parameters: [attributes objectForKey:K_PROCESS_PARAMETERS_KEY]];
_proxy = [[cnx proxyForObject:self inThread:YES] retain];
}
return( self );
}
- (void) processList
{
// Create a run loop for this thread
NSRunLoop* runLoop = [NSRunLoop currentRunLoop];
if ( _item != nil )
{
@try
{
[_processingInstance processItem:_item];
}
@catch( NSException *e )
{
NSLog( @"*** Exception %@ raised in item processing thread: \"%@\"",
[e name], [e reason] );
}
}
else
{
while ( ! _processEnded )
{
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
@try
{
// Null timeout and process next item immediately after
[runLoop runMode:NSDefaultRunLoopMode beforeDate:[NSDate date]];
if ( ! _processEnded )
{
id <LynkeosProcessableItem> item = [_itemList nextObject];
if ( item == nil )
// Process is finished
[self stopProcessing];
else
[_processingInstance processItem:item];
}
}
@catch( NSException *e )
{
NSLog( @"*** Exception %@ raised in list processing thread: \"%@\"",
[e name], [e reason] );
}
@finally
{
[pool release];
}
}
}
[_processingInstance finishProcessing];
[_document processEnded:_proxy];
}
@end
@implementation MyProcessingThread
+ (void) threadWithAttributes:(NSDictionary*)attr
{
NSAutoreleasePool *pool;
NSPort *rxPort;
LynkeosThreadConnection *cnx;
MyProcessingThread *threadController = nil;
MyDocument *doc;
pool = [[NSAutoreleasePool alloc] init];
@try
{
cnx = [attr objectForKey:K_PROCESS_CONNECTION];
rxPort = [cnx threadPort];
// Install the port as an input source on the current run loop.
[[NSRunLoop currentRunLoop] addPort:rxPort
forMode:NSDefaultRunLoopMode];
doc = (MyDocument*)[cnx rootProxy];
{
@try
{
threadController = [[self alloc] initWithAttributes:attr document:doc
connection:cnx];
}
@catch( NSException *e )
{
NSLog( @"*** Exception %@ raised in processing thread initialization:"
"\"%@\"",
[e name], [e reason] );
}
}
if ( threadController != nil )
{
[doc processStarted:threadController->_proxy connection:cnx];
[threadController processList];
}
else // In case an exception was caught during controller init
{
[doc processStarted:nil connection:cnx];
[doc processEnded:nil];
}
while ( ![cnx connectionIdle] )
[[NSRunLoop currentRunLoop] runMode: NSDefaultRunLoopMode
beforeDate: [NSDate dateWithTimeIntervalSinceNow:0.2]];
if ( threadController != nil )
[threadController release];
}
@catch( NSException *e )
{
NSLog( @"*** Exception %@ raised in processing thread :\"%@\"",
[e name], [e reason] );
}
@finally
{
[pool release];
}
}
- (oneway void) stopProcessing
{
_processEnded = YES;
}
- (void) dealloc
{
[_processingInstance release];
[_proxy release];
[_itemList release];
[_item release];
[super dealloc];
}
@end
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