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WGPermanentThreadOC.m
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99 lines (82 loc) · 2.92 KB
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//
// WGPermanentThread.m
// WGFcodeNotes
//
// Created by wubaicai on 2021/2/6.
// Copyright © 2021 WG. All rights reserved.
//
#import "WGPermanentThreadOC.h"
//将MJThread写在这里是为了方便查看线程销毁,后续项目中也可以直接用NSThread
@interface MJThreadOC : NSThread
@end
@implementation MJThreadOC
-(void)dealloc {
NSLog(@"永久线程WGPermanentThread销毁了");
}
@end
/// 永久线程类-WGPermanentThread
@interface WGPermanentThreadOC()
@property(nonatomic, strong) MJThreadOC *innerThread; //内部线程
@property(nonatomic, assign, getter=isStopped) BOOL stopped;
@end
@implementation WGPermanentThreadOC
#pragma mark public method
/// 初始化时就创建线程,并添加事件到RunLoop中
-(instancetype)init {
self = [super init];
if (self) {
self.stopped = NO;
__weak typeof(self) weakSelf = self;
self.innerThread = [[MJThreadOC alloc]initWithBlock:^{
[[NSRunLoop currentRunLoop] addPort:[[NSPort alloc]init] forMode:NSDefaultRunLoopMode];
while (weakSelf && !weakSelf.stopped) {
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
}
}];
//如果run方法不想写,启动线程也可以写在这个地方
//[self.innerThread start];
}
return self;
}
-(void)run {
// 防止线程已经销毁 仍然调用该方法
if (self.innerThread == nil) {
return;
}
[self.innerThread start];
}
/// 执行任务 Block形式
-(void)executeTask:(WGPermanentThreadOCTask)task {
// 防止线程已经销毁 仍然调执行任务
if (self.innerThread == nil || task == nil) {
return;
}
// 将任务作为参数传递到innerExecuteTask内部方法中 waitUntilDone:这里可以设置为NO,这样就不会阻塞外部线程,让任务异步执行
[self performSelector:@selector(innerExecuteTask:) onThread:self.innerThread withObject:task waitUntilDone:NO];
}
-(void)stop {
// 防止线程已经销毁 仍然调用stop方法
if (self.innerThread == nil) {
return;
}
//切记 waitUntilDone参数要设置为YES
[self performSelector:@selector(innerStop) onThread:self.innerThread withObject:nil waitUntilDone:YES];
}
//查看该对象是否销毁
-(void)dealloc {
//这里写了stop,外部使用的VC中的dealloc方法中就不需要再调用stop方法了
[self stop];
NSLog(@"------%s-----",__func__);
}
#pragma mark private method 内部方法来停用RunLoop
-(void)innerStop {
self.stopped = YES;
//只能够停掉Runloop循环中的某一次循环事件，即停不掉[[NSRunLoop currentRunLoop] run]，因为它是一个无限死循环
CFRunLoopStop(CFRunLoopGetCurrent());
self.innerThread = nil;
}
#pragma mark private method 内部方法来执行任务,保证任务是在子线程中执行的
-(void)innerExecuteTask:(WGPermanentThreadOCTask)task{
task();
}
@end