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How to create atomic function in objective-c

Is there a way to execute an entire objective-c atomic function?

As far as I know, the use of synchronization only protects the specific world of code from the simultaneous execution of multiple threads. But I want ALL other threads to do NOTHING while I perform the function.

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The Thread Programming Guide ) has a wealth of information. He specifically mentions to avoid synchronization (which is ridiculous because you sometimes cannot), but they offer some suggestions on this issue.

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Source: https://habr.com/ru/post/1752276/

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