Datasets:
memorylost731
/
linux_man_pages_library

Dataset card Data Studio Files Community
1
text
stringlengths
0
234
.i size
is not positive.
.tp
.b einval
.rb ( epoll_create1 ())
invalid value specified in
.ir flags .
.tp
.b emfile
the per-user limit on the number of epoll instances imposed by
.i /proc/sys/fs/epoll/max_user_instances
was encountered.
see
.br epoll (7)
for further details.
.tp
.b emfile
the per-process limit on the number of open file descriptors has been reached.
.tp
.b enfile
the system-wide limit on the total number of open files has been reached.
.tp
.b enomem
there was insufficient memory to create the kernel object.
.sh versions
.br epoll_create ()
was added to the kernel in version 2.6.
library support is provided in glibc starting with version 2.3.2.
.pp
.\" to be precise: kernel 2.5.44.
.\" the interface should be finalized by linux kernel 2.5.66.
.br epoll_create1 ()
was added to the kernel in version 2.6.27.
library support is provided in glibc starting with version 2.9.
.sh conforming to
.br epoll_create ()
and
.br epoll_create1 ()
are linux-specific.
.sh notes
in the initial
.br epoll_create ()
implementation, the
.i size
argument informed the kernel of the number of file descriptors
that the caller expected to add to the
.b epoll
instance.
the kernel used this information as a hint for the amount of
space to initially allocate in internal data structures describing events.
(if necessary, the kernel would allocate more space
if the caller's usage exceeded the hint given in
.ir size .)
nowadays,
this hint is no longer required
(the kernel dynamically sizes the required data structures
without needing the hint), but
.i size
must still be greater than zero,
in order to ensure backward compatibility when new
.b epoll
applications are run on older kernels.
.sh see also
.br close (2),
.br epoll_ctl (2),
.br epoll_wait (2),
.br epoll (7)
.sh colophon
this page is part of release 5.13 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
\%https://www.kernel.org/doc/man\-pages/.
.so man3/catanh.3
.\" copyright 2005, 2012, 2016 michael kerrisk <mtk.manpages@gmail.com>
.\"
.\" %%%license_start(gpl_noversion_oneline)
.\" distributed under the gpl.
.\" %%%license_end
.\"
.\" 2008-12-04, petr baudis <pasky@suse.cz>: document open_wmemstream()
.\"
.th open_memstream 3 2021-03-22 "gnu" "linux programmer's manual"
.sh name
open_memstream, open_wmemstream \- open a dynamic memory buffer stream
.sh synopsis
.nf
.b #include <stdio.h>
.pp
.bi "file *open_memstream(char **" ptr ", size_t *" sizeloc );
.pp
.b #include <wchar.h>
.pp
.bi "file *open_wmemstream(wchar_t **" ptr ", size_t *" sizeloc );
.fi