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Eintr Errno

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For example, attempting to remove a directory while another application is reading it. after the interrupt was handled, control is handed back to your application/function –knittl Feb 10 '11 at 16:14 Similar question: stackoverflow.com/questions/3633844/… –stefangachter Feb 11 '11 at 6:44 add a View/set parent page (used for creating breadcrumbs and structured layout). Macro: int EALREADY An operation is already in progress on an object that has non-blocking mode selected.

It can clutter up the elegance of your code, and you can get bogged down adding handlers for every conceivable error. This often indicates a cycle of symbolic links. However, if you try again, it will probably work." In other words, EINTR is not a fatal error -- it just means you should retry whatever you were attempting. (Edit: According However, this is not a serious problem.

Eintr Errno

Macro: int ECHILD There are no child processes. What happened was that user called ZeroMQ's recv function from Python, which started waiting for incoming data. Macro: int ENFILE There are too many distinct file openings in the entire system. up vote 3 down vote favorite 1 Small talk as background EINTR is the error which so-called interruptible system calls may return.

  • Trying the same operation again will block until some external condition makes it possible to read, write, or connect (whatever the operation).
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To give you a real world example of incorrectly implemented blocking function, here's a problem we encountered with ZeroMQ couple of years ago: Ctrl+C did not work when ZeroMQ library was By default, you have the SA_RESTART behavior, so you don't have to worry about EINTR, if you don't play with signals. linux eintr share|improve this question edited Jan 31 '14 at 8:50 hochl 7,03162357 asked Feb 10 '11 at 16:06 stefangachter 4001513 why do you want to call your function Linux Kernel Error Codes They also introduce advanced techniques for; establishing IPv4/IPv6 interoperability, implementing non-blocking I/O, routing sockets, broadcasting and multicasting, IP options, multithreading, advanced name and address conversions, UNIX domain protocols, and raw sockets.

Macro: int ENOTTY Inappropriate I/O control operation, such as trying to set terminal modes on an ordinary file. Eintr Linux Specifically, this is the case for pthread_cond_wait and pthread_mutex_lock. For some system calls and library functions (e.g., getpriority(2)), -1 is a valid return on success. Output a googol copies of a string What was the first operating system to feature a separate kernel? "Full-time Employment is a Loophole in the Law to Make Wages Lower"?

Remember that file descriptors include things like sockets.ENLINK -- The function call would cause a file to have more than LINK_MAX links.ENAMETOOLONG -- You've created a path name longer than PATH_MAX, Eintr Signal EINTR is considered only from 3rd listing on. Here is the relevant part of it: If the initiating socket is connection-mode, then connect() shall attempt to establish a connection to the address specified by the address argument. This article familiarizes you with UNIX error reporting in the standard C library and (hopefully) encourages you to report and handle errors in a user-friendly way.Let's dig in!Back to topBefore you

Eintr Linux

The problem is that recv is a blocking function. http://cboard.cprogramming.com/c-programming/124120-errno-==-eintr-means-what-thank-u.html Setting SA_RESTART does the exact opposite. Eintr Errno That allows the event loop to wrap over and check the 'stop' variable: volatile int stop = 0; void handler (int) { stop = 1; } void event_loop (int sock) { Eintr Select If this is for technical reasons, are these reasons still valid nowadays?

Finally there are few fine points to be aware of: First, there's no EINTR on Windows. If the timeout interval expires before the connection is established, connect() shall fail and the connection attempt shall be aborted. Watch headings for an "edit" link when available. Ouch. Eintr Error

EDIT: It was suggested by Justin Cormack that signalfd can be used to solve the last problem. It points out how obscure the Single Unix Specification is, and notes that many existing Unix implementations seem to have f*cked this up somehow. My compiler uses about 30 of these, but not your particular one. AIX 5L Wiki: A collaborative environment for technical information related to AIX.Podcasts: Tune in and catch up with IBM technical experts.

The values are always the same, on every operating system. Read Eintr Check the following code: volatile int stop = 0; void handler (int) { stop = 1; } void event_loop (int sock) { signal (SIGINT, handler); while (1) { if (stop) { Coz I just find general description about this error, still cannot solve my question about my reading program. 02-22-2010 #4 Adak View Profile View Forum Posts Registered User Join Date Sep

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For example, if a function returns an unsigned char value but calculated a result of 256 or more (or -1 or less), errno would be set to ERANGE and the function Reply Options Unfold by Andrea (guest), 07 Nov 2012 09:47 Fold martin_sustrik 07 Nov 2012 09:53 How would SA_RESTART help? Google had nothing, huh? 02-22-2010 #5 brewbuck View Profile View Forum Posts Officially An Architect Join Date Mar 2007 Location Portland, OR Posts 7,396 EINTR means "This call did not succeed Eintr Socket 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:

Macro: int ELOOP Too many levels of symbolic links were encountered in looking up a file name. This can mean that the device file was installed incorrectly, or that the physical device is missing or not correctly attached to the computer. Hence my calling this behavior the “Liberal Behavior” because it does not force the programmer to go through all this pain just to connect a socket. Macro: int EILSEQ While decoding a multibyte character the function came along an invalid or an incomplete sequence of bytes or the given wide character is invalid.

How does this answer the question above? See Sockets. Last edited on 16 Dec 2012 22:07 by martin_sustrik Show more Reply Options Unfold by martin_sustrik, 16 Dec 2012 22:07 Fold Alex (guest) 21 Oct 2014 13:40 On Windows this is You've just added a check on the return value & errno, but if the recv call is exiting with EINTR, you should have exact the same behaviour in both listings regardless

Macro: int ENOTCONN The socket is not connected to anything. Traditionally, applications (and the OS itself) don't handle this gracefully, which is why you need to have more RAM than you expect to use, especially on systems that can't dynamically increase Information in your profile (your name, country/region, and company name) is displayed to the public and will accompany any content you post, unless you opt to hide your company name. I read a program it has : if (errno == EINTR) in that program , if this is true, it will continue...

Macro: int EPROTOTYPE The socket type does not support the requested communications protocol. process signals posix system-calls share|improve this question edited Jan 5 at 23:07 chaos 27.6k65195 asked Jan 5 at 10:21 Hibou57 222111 add a comment| 1 Answer 1 active oldest votes up pselect() 5. Macro: int EMSGSIZE The size of a message sent on a socket was larger than the supported maximum size.