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21 lines
628 B
Groff
21 lines
628 B
Groff
21 years ago
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.TH io_eagain 3
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.SH NAME
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io_eagain \- tell io_wait that you got an EAGAIN
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.SH SYNTAX
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.B #include <io.h>
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void \fBio_eagain\fP(int64 fd);
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.SH DESCRIPTION
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If io_wait() said that you can read from a descriptor, you try to read
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from it, and you get EAGAIN, you need to tell io_wait(). This is
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important for edge triggered event notification schemes like Linux 2.4's
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SIGIO, or you will lose events.
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io_tryread(), io_trywrite() and io_sendfile() and iob_send() already
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take care of this for you.
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This function is only of interest if you integrate io_wait() with legacy
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code that uses read/write directly.
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.SH "SEE ALSO"
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io_wait(3)
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