12 lines
223 B
Mathematica
12 lines
223 B
Mathematica
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NSLock *m = [[NSLock alloc] init];
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[m lock]; // locks in blocking mode
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if ([m tryLock]) { // acquire a lock -- does not block if not acquired
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// lock acquired
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} else {
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// already locked, does not block
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}
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[m unlock];
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