第15月第22天 libz.dylib

1.

1. 3.在弹出的对话框中输入"cmd"+"shift"+"g" 

2. 4

   4.输入/usr/lib

https://jingyan.baidu.com/article/624e745959a39934e8ba5abb.html

2.thread

#define RunInSeparateThread(...)                                              

    ({                                                                        

        __block __typeof__(__VA_ARGS__) result;                               

        [ACDFTPManagerThread runInSeparateThread:^{                           

            result = (__VA_ARGS__);                                           

        }];                                                                   

        result;                                                               

    })

 

@implementation ACDFTPManagerThread

+ (void)runInSeparateThread:(void (^)(void))block {
    ACDFTPManagerThread *thread = [[ACDFTPManagerThread alloc] init];
    thread.block = block;
    thread->waitCondition = [[NSCondition alloc] init];

    [thread->waitCondition lock];
    NSThread *t = [[NSThread alloc] initWithTarget:thread
                                          selector:@selector(threadMain)
                                            object:nil];
    [t start];
    [thread->waitCondition wait];
    [thread->waitCondition unlock];
}

- (void)threadMain {
    @autoreleasepool {
        self.block();
        [waitCondition broadcast];
    }
}

@end

https://github.com/0xwangbo/GetEasy/blob/6770a0be76929962de14891e4b3061654494ac1a/Pods/ACDFTPManager/ACDFTPManager/Classes/ACDFTPManagerThread.m

https://github.com/search?l=Objective-C&q=main+thread+block&type=Code&utf8=%E2%9C%93