When dealing with sockets, we have to be sure that there is no recv still blocking on it on another thread, otherwise it might block forever, since no more messages will be send via the socket. We should advice to use shutdown before closing socket. Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx> --- man2/close.2 | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/man2/close.2 b/man2/close.2 index a2a2961..02472f3 100644 --- a/man2/close.2 +++ b/man2/close.2 @@ -114,6 +114,13 @@ other threads in the same process. Since a file descriptor may be reused, there are some obscure race conditions that may cause unintended side effects. +.PP +When dealing with sockets, you have to be sure that there is no +.BR recv (2) +still blocking on it on another thread, otherwise it might block forever, +since no more messages will be send via the socket. Be sure to use +.BR shutdown (2) +to shut down all parts the connection before closing the socket. .\" Date: Tue, 4 Sep 2007 13:57:35 +0200 .\" From: Fredrik Noring <noring@xxxxxxxxxx> .\" One such race involves signals and ERESTARTSYS. If a file descriptor -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
