X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-0.1 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org From: Uri Simchoni To: "cygwin AT cygwin DOT com" Date: Mon, 28 Dec 2009 10:03:46 -0500 Subject: Cygwin 1.7.1-1 - problem with non-blocking socket IO Message-ID: x-cr-hashedpuzzle: AKVR BKPk BK0p Bet2 CYNf EQXg FjLY FyF1 GR6U GiK3 Gu+S HCdO H8+u IT0f J5xF LaX0;1;YwB5AGcAdwBpAG4AQABjAHkAZwB3AGkAbgAuAGMAbwBtAA==;Sosha1_v1;7;{B9B2CC8C-DCB4-484B-98B6-8FF597FDEA04};dQByAGkAcwBAAGMAdABlAHIAYQAuAGMAbwBtAA==;Mon, 28 Dec 2009 15:03:46 GMT;QwB5AGcAdwBpAG4AIAAxAC4ANwAuADEALQAxACAALQAgAHAAcgBvAGIAbABlAG0AIAB3AGkAdABoACAAbgBvAG4ALQBiAGwAbwBjAGsAaQBuAGcAIABzAG8AYwBrAGUAdAAgAEkATwA= x-cr-puzzleid: {B9B2CC8C-DCB4-484B-98B6-8FF597FDEA04} Content-Type: multipart/mixed; boundary="_002_DDB181A6E7B893429D83CAC8DDBA74F107206CA231VMBX108ihoste_" MIME-Version: 1.0 Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com --_002_DDB181A6E7B893429D83CAC8DDBA74F107206CA231VMBX108ihoste_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, I seem to have a problem with non-blocking writes to TCP sockets and unix-d= omain sockets - they block. The attached program illustrates it - it creates a socketpair(), sets one e= nd to non-blocking and writes to it - expecting to get an EWOULDBLOCK. On m= y system it hangs. With pipe() it works fine. Please advise. Thanks, Uri --_002_DDB181A6E7B893429D83CAC8DDBA74F107206CA231VMBX108ihoste_ Content-Type: text/plain; name="nbtest2.c" Content-Description: nbtest2.c Content-Disposition: attachment; filename="nbtest2.c"; size=775; creation-date="Mon, 28 Dec 2009 09:43:46 GMT"; modification-date="Mon, 28 Dec 2009 09:55:03 GMT" Content-Transfer-Encoding: base64 I2luY2x1ZGUgPHN5cy90eXBlcy5oPgojaW5jbHVkZSA8c3lzL3NvY2tldC5o PgojaW5jbHVkZSA8dW5pc3RkLmg+CiNpbmNsdWRlIDxmY250bC5oPgojaW5j bHVkZSA8c3RkaW8uaD4KI2luY2x1ZGUgPGVycm5vLmg+CgojZGVmaW5lIEJB U0lDX1VOSVQJMTAyNCoxMDI0Ci8vI2RlZmluZSBCQVNJQ19VTklUCTEKY2hh ciBsYXJnZV9idWZbQkFTSUNfVU5JVF07Cgp2b2lkIGZkX3BhaXIoaW50ICpm ZCkKewovKglpZihwaXBlKGZkKTwwKQoJCXBlcnJvcigicGlwZSIpOyAqLwoJ aWYoc29ja2V0cGFpcihBRl9VTklYLFNPQ0tfU1RSRUFNLDAsZmQpIDwwKQoJ CXBlcnJvcigic29ja2V0cGFpciIpOwp9Cgp2b2lkIHNldF9ub25ibG9ja2lu ZyhpbnQgZmQpCnsKCWludCB2YWw9ZmNudGwoZmQsRl9HRVRGTCk7CglpZih2 YWw9PS0xKQoJCXBlcnJvcigiZmNudGwiKTsKCXZhbHw9T19OT05CTE9DSzsK CWZjbnRsKGZkLEZfU0VURkwsdmFsKTsKfQoKaW50IG1haW4oaW50IGFyZ2Ms Y2hhciAqYXJndltdKQp7CglpbnQgZmRbMl0scmM7CglmZF9wYWlyKGZkKTsK CSAgCglzZXRfbm9uYmxvY2tpbmcoZmRbMV0pOwoKCXdoaWxlKDEpewoJCXJj PXdyaXRlKGZkWzFdLGxhcmdlX2J1ZixzaXplb2YobGFyZ2VfYnVmKSk7CgkJ aWYocmM8MCl7CgkJCWlmKGVycm5vPT1FV09VTERCTE9DSykKCQkJCXByaW50 ZigiYmxvY2tpbmcsIHRoYW5rIHlvdSwgZ29vZGJ5ZS5cbiIpOwoJCQllbHNl CgkJCQlwZXJyb3IoIndyaXRlIik7CgoJCQlicmVhazsKCQl9Cgl9CgoJcmV0 dXJuIDA7Cn0KCg== --_002_DDB181A6E7B893429D83CAC8DDBA74F107206CA231VMBX108ihoste_ Content-Type: text/plain; charset=us-ascii -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple --_002_DDB181A6E7B893429D83CAC8DDBA74F107206CA231VMBX108ihoste_--