147 lines
2.9 KiB
Objective-C
147 lines
2.9 KiB
Objective-C
// Copyright 2019 Google
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import "FIRCLSFABAsyncOperation.h"
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#import "FIRCLSFABAsyncOperation_Private.h"
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@interface FIRCLSFABAsyncOperation () {
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BOOL _internalExecuting;
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BOOL _internalFinished;
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}
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@property(nonatomic, strong) NSRecursiveLock *lock;
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@end
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@implementation FIRCLSFABAsyncOperation
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- (instancetype)init {
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self = [super init];
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if (!self) {
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return nil;
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}
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_internalExecuting = NO;
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_internalFinished = NO;
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_lock = [[NSRecursiveLock alloc] init];
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_lock.name = [NSString stringWithFormat:@"com.google.firebase.crashlytics.%@-lock", [self class]];
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;
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return self;
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}
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#pragma mark - NSOperation Overrides
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- (BOOL)isConcurrent {
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return YES;
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}
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- (BOOL)isAsynchronous {
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return YES;
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}
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- (BOOL)isExecuting {
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[self.lock lock];
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BOOL result = _internalExecuting;
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[self.lock unlock];
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return result;
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}
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- (BOOL)isFinished {
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[self.lock lock];
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BOOL result = _internalFinished;
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[self.lock unlock];
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return result;
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}
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- (void)start {
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if ([self checkForCancellation]) {
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return;
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}
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[self markStarted];
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[self main];
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}
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#pragma mark - Utilities
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- (void)changeValueForKey:(NSString *)key inBlock:(void (^)(void))block {
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[self willChangeValueForKey:key];
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block();
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[self didChangeValueForKey:key];
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}
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- (void)lock:(void (^)(void))block {
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[self.lock lock];
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block();
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[self.lock unlock];
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}
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- (BOOL)checkForCancellation {
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if ([self isCancelled]) {
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[self markDone];
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return YES;
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}
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return NO;
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}
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#pragma mark - State Management
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- (void)unlockedMarkFinished {
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[self changeValueForKey:@"isFinished"
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inBlock:^{
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self->_internalFinished = YES;
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}];
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}
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- (void)unlockedMarkStarted {
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[self changeValueForKey:@"isExecuting"
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inBlock:^{
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self->_internalExecuting = YES;
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}];
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}
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- (void)unlockedMarkComplete {
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[self changeValueForKey:@"isExecuting"
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inBlock:^{
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self->_internalExecuting = NO;
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}];
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}
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- (void)markStarted {
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[self lock:^{
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[self unlockedMarkStarted];
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}];
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}
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- (void)markDone {
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[self lock:^{
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[self unlockedMarkComplete];
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[self unlockedMarkFinished];
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}];
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}
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#pragma mark - Protected
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- (void)finishWithError:(NSError *)error {
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if (self.asyncCompletion) {
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self.asyncCompletion(error);
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}
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[self markDone];
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}
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@end
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