mirror of
https://github.com/samsonjs/arq_restore.git
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111 lines
3.7 KiB
Objective-C
111 lines
3.7 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 "PIELoader.h"
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#import "PIELoaderWorker.h"
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#define NUM_WORKER_THREADS (5)
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@implementation PIELoader
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- (id)initWithDelegate:(id <PIELoaderDelegate>)theDelegate packIds:(NSArray *)thePackIds fark:(Fark *)theFark storageType:(StorageType)theStorageType {
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if (self = [super init]) {
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workerThreadSemaphore = dispatch_semaphore_create(0);
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packIds = [thePackIds retain];
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fark = theFark;
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delegate = theDelegate;
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lock = [[NSLock alloc] init];
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[lock setName:@"PIELoader"];
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HSLogDetail(@"saving entries from %ld packs to database", [thePackIds count]);
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for (NSUInteger i = 0; i < NUM_WORKER_THREADS; i++) {
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[[[PIELoaderWorker alloc] initWithPIELoader:self fark:fark storageType:theStorageType] 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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[loadError release];
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[packIds release];
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[lock release];
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dispatch_release(workerThreadSemaphore);
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[super dealloc];
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}
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- (BOOL)waitForCompletion:(NSError **)error {
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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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if (loadErrorOccurred) {
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if (error != NULL) {
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*error = loadError;
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}
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return NO;
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}
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return YES;
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}
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- (PackId *)nextPackId {
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PackId *ret = nil;
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[lock lock];
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if (!loadErrorOccurred) {
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if (packIdIndex < [packIds count]) {
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ret = [packIds objectAtIndex:packIdIndex];
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packIdIndex++;
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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)packIndexEntries:(NSArray *)thePIES wereLoadedForPackId:(PackId *)thePackId {
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[lock lock];
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loadedCount++;
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if (![delegate pieLoaderDidLoadPackIndexEntries:thePIES forPackId:thePackId index:loadedCount total:[packIds count] error:&loadError]) {
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loadErrorOccurred = YES;
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[loadError retain];
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}
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[lock unlock];
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}
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- (void)errorDidOccur:(NSError *)theError {
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[lock lock];
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loadErrorOccurred = YES;
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loadError = [theError retain];
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HSLogError(@"PIELoader: load error occurred: %@", loadError);
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[lock unlock];
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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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