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Editorial Team
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Asked: 2026-06-10T02:30:15+00:00

I have a program reading in from a file, doin some work on the

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I have a program reading in from a file, doin some work on the input, then outputing it to a socket. It’s been running fine for over a month when suddenly I started to get error 11 (EAGAIN?) error that kill the program. When I start 32 instances of the program more then half die within a few minutes receiving EAGAIN messages. I never set the file as non-blocking and besides which how would an input file block, the data is always there isn’t it? The only change i made to this code was to disable the sigpipe signal to avoid the program dieing when it’s socket connection is lost.

Forgive me for not posting code, but I can’t copy and paste and the code is sort of spread out anyways. It’s really as simple as opening a file on one line and calling readline(file, inputString) later on though.

Thanks.

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1 Answer

  1. Editorial Team

    EAGAIN means that the read has been interrupted by a signal and that it should be restarted.

    I assume it is the SIGPIPE which used to directly kill your programs and now is handled (even if the handling is to do nothing).

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