WriteFile thread safety

Question

Is WriteFile thread safe? I mean,can I write the same file from multiple threads simultaneously without synchronization? MSDN says nothing about thread safety of WriteFile.

score 3 · Accepted Answer · edited Mar 19 '20 at 09:57

3

Yes it is thread safe by its own, i.e it prevents system from crashing, win API maintain internal locking when writing files and that lock is byte-range locks. You can read more here File locking

edited Mar 19 '20 at 09:57

Sasha

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answered Apr 09 '13 at 06:00

Nasir Mahmood

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WriteFile thread safety

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