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juwencheng/MultiThreadObject.m

Created October 5, 2018 00:56
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  1. juwencheng created this gist Oct 5, 2018.
    6 changes: 6 additions & 0 deletions MultiThreadObject.m
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,6 @@
    @interface MultiThreadObject: NSObject
    @property (nonatomic, strong) NSArray *data;
    @end

    @implementation MultiThreadObject
    @end
    25 changes: 25 additions & 0 deletions demo1.m
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    MultiThreadObject *object = [[MultiThreadObject alloc] init];
    NSLock *lock = [[NSLock alloc] init];
    [NSThread detachNewThreadWithBlock:^{
    NSInteger loopCount = 1000;
    while (loopCount) {
    [lock lock];
    NSArray *data = @[@"1", @"2", @"3"];
    object.data = data;
    if (object.data != data) {
    NSLog(@"多线程同步问题 self.data: %@, data: %@",object.data, data);
    }
    loopCount --;
    [lock unlock];
    }
    }];
    [NSThread detachNewThreadWithBlock:^{
    NSInteger loopCount = 1000;
    while (loopCount) {
    [lock lock];
    NSArray *data = @[@"1", @"2", @"3", @"4"];
    object.data = data;
    loopCount --;
    [lock unlock];
    }
    }];