> When exactly should this get sent? As I understand it, POLLOUT is an indication that a subsequent send will not block. You may not be able to send everything you've got, but there's space in the TCP output buffer for some of it. >From what I've seen with POLLIN, signals are not repeated unnecessarily, so I'd guess that you'd get POLLOUT right after socket creation (bind?) (maybe not depending on timing of the rt signal setup calls) and then you won't see it again unless you fill the TCP output buffer. Perhaps if you're using non-blocking I/O, you'll never get POLLOUT? -Erik -----Original Message----- From: Aaron Sethman [mailto:androsyn@ratbox.org] Sent: Monday, December 17, 2001 7:20 AM To: linux-net@vger.kernel.org Subject: POLLOUT and sigio.. I am attempting to make a pre-existing server use SIGIO with posix rt signals and I am having some difficulties with it. Mainly with reception of POLLOUT. When exactly should this get sent? Should it only get sent when attempting to write() and getting EAGAIN, then the socket being ready or? Thanks in advance. Regards, Aaron - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
