mirror of
https://github.com/samsonjs/arq_restore.git
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91 lines
3.3 KiB
Objective-C
91 lines
3.3 KiB
Objective-C
/*
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Copyright (c) 2009-2017, Haystack Software LLC https://www.arqbackup.com
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the names of PhotoMinds LLC or Haystack Software, nor the names of
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their contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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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
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "ItemFSFileDeleter.h"
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#import "ItemFSFileDeleterWorker.h"
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#define NUM_WORKER_THREADS (5)
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@implementation ItemFSFileDeleter
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- (id)initWithItemFS:(id <ItemFS>)theItemFS itemsByPath:(NSDictionary *)theItemsByPath targetConnectionDelegate:(id<TargetConnectionDelegate>)theTCD {
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if (self = [super init]) {
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itemFS = theItemFS;
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itemsByPath = [theItemsByPath retain];
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keys = [[itemsByPath allKeys] retain];
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targetConnectionDelegate = theTCD;
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workerThreadSemaphore = dispatch_semaphore_create(0);
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lock = [[NSLock alloc] init];
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[lock setName:@"RemoteFSFileDeleter lock"];
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HSLogDebug(@"deleting %ld files", [itemsByPath count]);
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HSLogDebug(@"creating %d worker threads", NUM_WORKER_THREADS);
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for (NSUInteger i = 0; i < NUM_WORKER_THREADS; i++) {
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[[[ItemFSFileDeleterWorker alloc] initWithItemFSFileDeleter:self itemFS:itemFS targetConnectionDelegate:theTCD] autorelease];
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}
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}
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return self;
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}
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- (void)dealloc {
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[itemsByPath release];
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[keys release];
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[super dealloc];
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}
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- (void)waitForCompletion {
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for (NSUInteger i = 0; i < NUM_WORKER_THREADS; i++) {
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dispatch_semaphore_wait(workerThreadSemaphore, DISPATCH_TIME_FOREVER);
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}
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HSLogDebug(@"finished deleting %ld file%@", [keys count], ([keys count] == 1 ? @"" : @"s"));
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}
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- (NSString *)nextPath:(Item **)outItem {
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[lock lock];
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NSString *ret = nil;
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if (!errorOccurred) {
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if (keysIndex < [keys count]) {
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ret = [keys objectAtIndex:keysIndex];
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keysIndex++;
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*outItem = [itemsByPath objectForKey:ret];
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}
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}
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[lock unlock];
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return ret;
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}
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- (void)workerDidFinish {
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dispatch_semaphore_signal(workerThreadSemaphore);
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}
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@end
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