mirror of
https://github.com/DKJone/DKWechatHelper.git
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78 lines
2.1 KiB
Objective-C
78 lines
2.1 KiB
Objective-C
// QGAnimatedImageDecodeThreadPool.m
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// Tencent is pleased to support the open source community by making vap available.
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//
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// Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved.
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//
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// Licensed under the MIT License (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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//
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// http://opensource.org/licenses/MIT
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions and
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// limitations under the License.
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#import "QGAnimatedImageDecodeThreadPool.h"
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#import "QGAnimatedImageDecodeThread.h"
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#import "QGVAPSafeMutableArray.h"
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@interface QGAnimatedImageDecodeThreadPool (){
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NSMutableArray *_threads;
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}
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@end
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@implementation QGAnimatedImageDecodeThreadPool
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+ (instancetype)sharedPool {
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static QGAnimatedImageDecodeThreadPool *instance;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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instance = [[QGAnimatedImageDecodeThreadPool alloc] init];
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});
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return instance;
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}
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- (instancetype)init {
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if (self = [super init]) {
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_threads = [QGVAPSafeMutableArray new];
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}
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return self;
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}
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/**
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从池子中找出没被占用的线程，如果没有则新建一个
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@return 解码线程
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*/
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- (QGAnimatedImageDecodeThread *)getDecodeThread {
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QGAnimatedImageDecodeThread *freeThread = nil;
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for (QGAnimatedImageDecodeThread *thread in _threads) {
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if (!thread.occupied) {
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freeThread = thread;
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}
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}
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if (!freeThread) {
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freeThread = [[QGAnimatedImageDecodeThread alloc] initWithTarget:self selector:@selector(run) object:nil];
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[freeThread start];
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[_threads addObject:freeThread];
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}
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return freeThread;
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}
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- (void)run{
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//线程保活
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@autoreleasepool {
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[[NSRunLoop currentRunLoop] addPort:[NSPort port] forMode:NSDefaultRunLoopMode];
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NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
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[runLoop run];
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}
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}
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@end
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