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After some investigation, it turned out that Python runtime works more or less like the examples above. Claiming that read() did succeed? E2BIG Argument list too long (POSIX.1) EACCES Permission denied (POSIX.1) EADDRINUSE Address already in use (POSIX.1) EADDRNOTAVAIL Address not available (POSIX.1) EAFNOSUPPORT Address family not supported (POSIX.1) EAGAIN Resource temporarily unavailable it's fork()'s error. http://csimonitoring.com/error-codes/eintr-error-4.php

Often programmers forget to check, which is a common source of error. This way the rest of your code never have to deal with EINTR. View/set parent page (used for creating breadcrumbs and structured layout). perror , strerror . http://www.gnu.org/s/libc/manual/html_node/Error-Codes.html

Eintr Errno

If signals are blocked, and a signal happens, it is queued, not discarded. Macro: int ENOLCK No locks available. See Sockets.

This function causes the current thread to sleep until it is explicitly woken up (which is the case if data becomes ready for reading) or a timeout has been hit (e.g. Macro: int EINPROGRESS An operation that cannot complete immediately was initiated on an object that has non-blocking mode selected. If it is not set, it puts the current thread to sleep by calling a function named msleep(). Eintr Signal What happened was that user called ZeroMQ's recv function from Python, which started waiting for incoming data.

The morale of this story is that common advice to just restart the blocking function when EINTR is returned doesn't quite work: volatile int stop = 0; void handler (int) { Eintr Linux Macro: int EPROCLIM This means that the per-user limit on new process would be exceeded by an attempted fork. if we need more data, goto 2 (yes, 2, so we don't miss a signal) 7. http://250bpm.com/blog:12 Ouch.

Historically, implementations derived from System V fail the system call, whereas BSD-derived implementations return partial success. Linux Errno Example You can use the select function to find out when the pending operation has completed; see Waiting for I/O. Macro: int EHOSTUNREACH The remote host for a requested network connection is not reachable. check if signal is pending (this is atomic because signals are blocked) 3.

Eintr Linux

See Socket Addresses. http://man7.org/linux/man-pages/man3/errno.3.html ioctl(), sometimes it is not done, e.g. Eintr Errno This trick is even applicable in libraries. Eintr Select Typically, this error occurs when you are trying to delete a directory.

This error is never generated by GNU/Hurd systems, but it can result from an operation to an NFS server running another operating system. Macro: int EFBIG File too big; the size of a file would be larger than allowed by the system. If so, does it apply cross different implementations? thank u! 02-22-2010 #2 Adak View Profile View Forum Posts Registered User Join Date Sep 2006 Posts 8,868 errno.h has a list of errors with these mnemonics. Linux Kernel Error Codes

If the signal handler returns, the system faces the question: what should happen next? This is a “file doesn’t exist” error for ordinary files that are referenced in contexts where they are expected to already exist. share|improve this answer edited Jan 8 '15 at 17:28 answered Jan 23 '13 at 17:06 Mecki 57.7k21119153 Thank you for your detailed answer. –haohaolee Jan 26 '13 at 3:20 http://csimonitoring.com/error-codes/eintr-error-number.php Can 'it' be used to refer to a person?

There is one situation where resumption never happens no matter which choice you make: when a data-transfer function such as read or write is interrupted by a signal after transferring part Posix Error Codes Macro: int EBADMSG Macro: int EIDRM Macro: int EMULTIHOP Macro: int ENODATA Macro: int ENOLINK Macro: int ENOMSG Macro: int ENOSR Macro: int ENOSTR Macro: int EOVERFLOW Macro: int EPROTO Macro: In an event driven application you can block all signals and only unblock them for the duration of pselect()/epoll_pwait() call.

Macro: int EACCES Permission denied; the file permissions do not allow the attempted operation.

Hosting by jambit GmbH. Of course, even with non-blocking I/O, the read call may have temporarily interrupted by a signal but why would the system have to indicate that? How to insert equation numbers with lstlisting? Eintr Read EDIT: Please note that to make blocking fuctions like recv return EINTR you may have to use sigaction() with SA_RESTART set to zero instead of signal() on some operating systems.

Of course that was MacOS/FreeBSD, other systems may be different, but since most systems try to keep at least a certain level of consistency among these APIs, if a system breaks This error means you got lucky and the system noticed; it might just hang. Thank you. –Abhrajyoti Kirtania Dec 22 '14 at 11:07 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Macro: int EHOSTDOWN The remote host for a requested network connection is down.

In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms You use non-blocking sockets and in the select() you always monitor your sockets and the read end of the pipe. Macro: int ENEEDAUTH ??? The one function that is not documented to ever fail with EINTR is bind().

linux eintr share|improve this question edited Jan 31 '14 at 8:50 hochl 6,99662357 asked Feb 10 '11 at 16:06 stefangachter 3951513 why do you want to call your function The event loop is stuck in recv and has no opportunity to check whether 'stop' was set to 1. Once again, if anybody knows how to perform clean shutdown when pthread_cond_wait gets into its way, let me know! How is the 3rd listing supposed to behave differently from the 2nd one??

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed You can choose to have functions resume after a signal that is handled, rather than failing with EINTR; see Interrupted Primitives. I've tried to keep the examples simple. Instead of remembering these intricacies you can just remember a simple rule of thumb: When handling EINTR error, check any conditions that may have been altered by signal handlers.

Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Reply Options Unfold by martin_sustrik, 07 Nov 2012 09:53 Fold Andrea (guest) 07 Nov 2012 09:47 Ok, I think I found the problem: it seems that if you install a signal If Ctrl+C signal is caught, it sets a variable in the handler and continues the execution until it gets to a point where signal-induced conditions are checked. Yet the thread is also woken up, if a signal is delivered, in which case msleep() itself returns EINTR and the next higher layer just passes this error through.

students who have girlfriends/are married/don't come in weekends...? Macro: int EDEADLK Deadlock avoided; allocating a system resource would have resulted in a deadlock situation. Macro: int ESTALE Stale file handle.