+++ /dev/null
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-.TH AIO_INIT 3 2012-04-26 "Linux" "Linux Programmer's Manual"
-.SH NAME
-aio_init \- asynchronous I/O initialization
-.SH SYNOPSIS
-.nf
-.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
-.B "#include <aio.h>"
-
-.BI "void aio_init(const struct aioinit *" init );
-.fi
-.sp
-Link with \fI\-lrt\fP.
-.SH DESCRIPTION
-The GNU-specific
-.BR aio_init ()
-function allows the caller to provide tuning hints to the
-glibc POSIX AIO implementation.
-Use of this function is optional, but to be effective,
-it must be called before employing any other functions in the POSIX AIO API.
-
-The tuning information is provided in the buffer pointed to by the argument
-.IR init .
-This buffer is a structure of the following form:
-.PP
-.in +4n
-.nf
-struct aioinit {
- int aio_threads; /* Maximum number of threads */
- int aio_num; /* Number of expected simultaneous
- requests */
- int aio_locks; /* Not used */
- int aio_usedba; /* Not used */
- int aio_debug; /* Not used */
- int aio_numusers; /* Not used */
- int aio_idle_time; /* Number of seconds before idle thread
- terminates (since glibc 2.2) */
- int aio_reserved;
-};
-.fi
-.in
-.PP
-The following fields are used in the
-.I aioinit
-structure:
-.TP 15
-.I aio_threads
-This field specifies the maximum number of worker threads that
-may be used by the implementation.
-If the number of outstanding I/O operations exceeds this limit,
-then excess operations will be queued until a worker thread becomes free.
-If this field is specified with a value less than 1, the value 1 is used.
-The default value is 20.
-.TP
-.I aio_num
-This field should specify the maximum number of simultaneous I/O requests
-that the caller expects to enqueue.
-If a value less than 32 is specified for this field,
-it is rounded up to 32.
-.\" FIXME . But, if aio_num > 32, the behavior looks strange. See
-.\" http://sourceware.org/bugzilla/show_bug.cgi?id=12083
-The default value is 64.
-.TP
-.I aio_idle_time
-This field specifies the amount of time in seconds that a
-worker thread should wait for further requests before terminating,
-after having completed a previous request.
-The default value is 1.
-.SH VERSIONS
-The
-.BR aio_init ()
-function is available since glibc 2.1.
-.SH CONFORMING TO
-This function is a GNU extension.
-.SH SEE ALSO
-.BR aio (7)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
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