Error 4 Eintr
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Aug 2004 on RedHat 7.3 #define EPERM 1 /* Operation not permitted */ #define ENOENT 2 /* No such file or directory */ #define ESRCH 3 /* No such process */ #define EINTR 4 /* Interrupted system call */ #define EIO 5 /* I/O error */ #define ENXIO 6 linux kernel error codes /* No such device or address */ #define E2BIG 7 /* Arg list too long */ #define ENOEXEC posix error codes 8 /* Exec format error */ #define EBADF 9 /* Bad file number */ #define ECHILD 10 /* No child processes */ #define EAGAIN 11 /*
Linux Errno Example
Try again */ #define ENOMEM 12 /* Out of memory */ #define EACCES 13 /* Permission denied */ #define EFAULT 14 /* Bad address */ #define ENOTBLK 15 /* Block device required */ #define EBUSY 16 /* Device or resource busy */ #define EEXIST
Enxio
17 /* File exists */ #define EXDEV 18 /* Cross-device link */ #define ENODEV 19 /* No such device */ #define ENOTDIR 20 /* Not a directory */ #define EISDIR 21 /* Is a directory */ #define EINVAL 22 /* Invalid argument */ #define ENFILE 23 /* File table overflow */ #define EMFILE 24 /* Too many open files */ #define ENOTTY 25 /* Not a typewriter */ #define ETXTBSY 26 /* Text file busy */ #define EFBIG 27 /* File too large */ #define ENOSPC 28 linux errno to string /* No space left on device */ #define ESPIPE 29 /* Illegal seek */ #define EROFS 30 /* Read-only file system */ #define EMLINK 31 /* Too many links */ #define EPIPE 32 /* Broken pipe */ #define EDOM 33 /* Math argument out of domain of func */ #define ERANGE 34 /* Math result not representable */ #define EDEADLK 35 /* Resource deadlock would occur */ #define ENAMETOOLONG 36 /* File name too long */ #define ENOLCK 37 /* No record locks available */ #define ENOSYS 38 /* Function not implemented */ #define ENOTEMPTY 39 /* Directory not empty */ #define ELOOP 40 /* Too many symbolic links encountered */ #define EWOULDBLOCK EAGAIN /* Operation would block */ #define ENOMSG 42 /* No message of desired type */ #define EIDRM 43 /* Identifier removed */ #define ECHRNG 44 /* Channel number out of range */ #define EL2NSYNC 45 /* Level 2 not synchronized */ #define EL3HLT 46 /* Level 3 halted */ #define EL3RST 47 /* Level 3 reset */ #define ELNRNG 48 /* Link number out of range */ #define EUNATCH 49 /* Protocol driver not attached */ #define ENOCSI 50 /* No CSI structure available */ #define EL2HLT 51 /* Level 2 halted */ #define EBADE 52 /* Invalid exchange */ #define EBADR 53 /* Invalid request descriptor */ #define EXFULL 54 /* Exchange full */ #define ENOANO 55 /* No anode */ #define EBADRQC 56 /* Invalid request code */ #define EBADSLT 57 /* Invalid slot */ #define EDEADLOCK EDEADLK #define EBFONT 59 /* Bad font fi
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| Get a compiler | Fixes for common problems Thread: (errno == EINTR) means efault WHAT? thank u! Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to errno.h windows Hybrid Mode Switch to Threaded Mode 02-22-2010 #1 Rede View Profile View Forum Posts Registered User Join Date Feb 2010 Posts 13 (errno == EINTR) means WHAT? thank u! I read a program it has http://www-numi.fnal.gov/offline_software/srt_public_context/WebDocs/Errors/unix_system_errors.html : if (errno == EINTR) in that program , if this is true, it will continue... else will throw a exception.. I don't understand EINTR means and I also cannot find its definition in my whole program packet. If anybody knew, please tell me. 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 http://cboard.cprogramming.com/c-programming/124120-errno-==-eintr-means-what-thank-u.html these mnemonics. For instance ENOFILE, means you tried to access a file that doesn't exist, etc. They all start with E and are all caps. My compiler uses about 30 of these, but not your particular one. They can be used to index into the sys_errlist array and output with perror. Googling on that error mnemonic should get you the answer, quickly. 02-22-2010 #3 Rede View Profile View Forum Posts Registered User Join Date Feb 2010 Posts 13 thank you Adak, yes I know it. it's fork()'s error. Wish somebody know more detail and tell me. 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 2006 Posts 8,868 If you post up the code, when someone comes along with more savvy on this, they'll be much more helpful, seeing the code. I thought it might be an interrupt error, but that's just my guess at it. 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 because it was interrupted. However, if
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn http://stackoverflow.com/questions/6870158/epoll-wait-fails-due-to-eintr-how-to-remedy-this more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags http://stackoverflow.com/questions/1674162/how-to-handle-eintr-interrupted-system-call Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up epoll_wait fails due to EINTR , how to remedy this? up vote 2 down vote favorite My epoll_wait fails due to EINTR. My gdb trace shows error codes this: enter code here 221 in ../nptl/sysdeps/pthread/createthread.c (gdb) 224 in ../nptl/sysdeps/pthread/createthread.c (gdb) [New Thread 0x40988490 (LWP 3589)] 227 in ../nptl/sysdeps/pthread/createthread.c (gdb) epoll_wait error in start timer: Measurement will befor entire duration of execution epoll_wait: Interrupted system call [Thread 0x40988490 (LWP 3589) exited] This string " epoll_wait error in start timer: Measurement will befor entire duration of execution" is printed by me in stderr. I am not able to make out, how to remedy this EINTR so error 4 eintr that epoll_wait can work. Any idea how this EINTR is generated by GDB trace? Please help me (This is urgent). Thanks in advance. c linux system-calls epoll interrupted-exception share|improve this question asked Jul 29 '11 at 7:54 kingsmasher1 3,1051447100 add a comment| 1 Answer 1 active oldest votes up vote 12 down vote accepted Certain signal handler will interrupt epoll_wait(), select() and similar system calls on any Unix or Linux. This is by design so you can interrupt these system calls. You cannot directly remedy it. The typical solution is to explicitly check the errno for EINTR and to execute epoll_wait() again: int nr; do { nr = epoll_wait(epfd, events, maxevents, timeout); } while (nr < 0 && errno == EINTR); Also see: gdb error: Unable to execute epoll_wait: (4) Interrupted system call share|improve this answer answered Jul 29 '11 at 8:16 Codo 38.9k883129 Thanks a lot, i think this will work. Let me try out, will get back tou you in few mins, after i check. Anyways it looks a cool solution. –kingsmasher1 Jul 29 '11 at 8:20 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to handle EINTR (interrupted System Call) up vote 3 down vote favorite 3 My user-space application sometimes blocks after receiving an EINTR-Signal, somehow. What I recorded with strace: time(NULL) = 1257343042 time(NULL) = 1257343042 rt_sigreturn(0xbff07be4) = -1 EINTR (Interrupted system call) --- SIGALRM (Alarm clock) @ 0 (0) --- time(NULL) = 1257343042 futex(0xb7cea80c, 0x80 /* FUTEX_??? */, 2) = ? ERESTARTSYS (To be restarted) --- SIGUSR1 (User defined signal 1) @ 0 (0) --- sigreturn() = ? (mask now [ALRM]) futex(0xb7cea80c, 0x80 /* FUTEX_??? */, 2) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- futex(0xb7cea80c, 0x80 /* FUTEX_??? */, 2) = ? ERESTARTSYS (To be restarted) --- SIGTERM (Terminated) @ 0 (0) --- time(NULL) = 1257343443 time(NULL) = 1257343443 futex(0xb7cea80c, 0x80 /* FUTEX_??? */, 2) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- futex(0xb7cea80c, 0x80 /* FUTEX_??? */, 2 Can I catch the EINTR signal and how can I repeat concerned calls such as write, read or select? How can I determine WHERE this EINTR occurred, even if I used third-party libraries working with system calls? Why my app is completely blocked after receiving an EINTR (see strace dump: I sent a SIGUSR1 which normally should be handled)? And why is futex() returning ERESTARTSYS to user space? thanks c++ c linux share|improve this question asked Nov 4 '09 at 14:40 Maus 1,03531733 3 EINTR is not a signal but an error number returned upon a system call interrupted by a signal. –Nikolai N Fetissov Nov 4 '09 at 15:06 Use gstack or gdb to get a stack trace, to find out where the program is currently stuck. –mark4o Nov 4 '09 at 16:08 add a comment| 2 Answers 2 active oldest votes up vote 15 down vote accepted The code which calls write (or other blocking operations) has to be aware of EINTR. If a signal occurs during a blocking operation, then the operation will either (a) return partial completion, or (b) return failure, do nothing, and set errno to EINTR. So, for