CODEWITHSUNDEEP
clinux
Marian
Marian

Reputation: 7482

Can close() block execution for some period of time?

I am writing a small networking program where latency is very important. I would like to catch all possible cases where execution is blocked in some system call.

I know that connect can block execution for several seconds. read blocks until data is available. write blocks until there is enough of space in system buffers. The question is: can close block execution for some time? If yes, is this solved by using non-blocking sockets?

I am working on Linux. However, it is interesting to learn about other systems as well.

Upvotes: 2

Views: 585

Answers (1)

mshriv
mshriv

Reputation: 322

Yes close can block. It happens when there is another thread blocked on recv/send call on same socket.

Use non-blocking sockets to avoid this.

Upvotes: 2

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