path: root/po/pt_BR/man2/select.2.po

# Brazilian Portuguese translation of manpages
# This file is distributed under the same license as the manpages-l10n package.
# Copyright © of this file:
# Mila <misfit@linuxbr.com.br>, 2001.
# André Luiz Fassone <lonely_wolf@ig.com.br>, 2001.
msgid ""
msgstr ""
"Project-Id-Version: manpages-l10n\n"
"POT-Creation-Date: 2024-06-01 06:20+0200\n"
"PO-Revision-Date: 2001-06-02 19:20-0300\n"
"Last-Translator: André Luiz Fassone <lonely_wolf@ig.com.br>\n"
"Language-Team: Brazilian Portuguese <debian-l10n-portuguese@lists.debian."
"org>\n"
"Language: pt_BR\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=2; plural=(n > 1);\n"
"X-Generator: Virtaal 1.0.0-beta1\n"

#. type: TH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "select"
msgstr "select"

#. type: TH
#: archlinux debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "2024-05-02"
msgstr "2 maio 2024"

#. type: TH
#: archlinux debian-unstable
#, fuzzy, no-wrap
#| msgid "Linux man-pages 6.7"
msgid "Linux man-pages 6.8"
msgstr "Linux man-pages 6.7"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NAME"
msgstr "NOME"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO - synchronous I/O "
#| "multiplexing"
msgid ""
"select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO, fd_set - synchronous I/O "
"multiplexing"
msgstr ""
"select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO - multiplexação síncrono "
"de E/S"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "LIBRARY"
msgstr "BIBLIOTECA"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Standard C library (I<libc>, I<-lc>)"
msgstr "Biblioteca C Padrão (I<libc>, I<-lc>)"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SYNOPSIS"
msgstr "SINOPSE"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<#include E<lt>sys/select.hE<gt>>\n"
msgstr "B<#include E<lt>sys/select.hE<gt>>\n"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<typedef> /* ... */ B<fd_set;>\n"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid ""
#| "B<int select(int >I<nfds>B<, fd_set *>I<readfds>B<, fd_set *>I<writefds>B<,>\n"
#| "B<           fd_set *>I<exceptfds>B<, struct timeval *>I<timeout>B<);>\n"
msgid ""
"B<int select(int >I<nfds>B<, fd_set *_Nullable restrict >I<readfds>B<,>\n"
"B<           fd_set *_Nullable restrict >I<writefds>B<,>\n"
"B<           fd_set *_Nullable restrict >I<exceptfds>B<,>\n"
"B<           struct timeval *_Nullable restrict >I<timeout>B<);>\n"
msgstr ""
"B<int select(int >I<nfds>B<, fd_set *>I<readfds>B<, fd_set *>I<writefds>B<,>\n"
"B<           fd_set *>I<exceptfds>B<, struct timeval *>I<timeout>B<);>\n"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"B<void FD_CLR(int >I<fd>B<, fd_set *>I<set>B<);>\n"
"B<int  FD_ISSET(int >I<fd>B<, fd_set *>I<set>B<);>\n"
"B<void FD_SET(int >I<fd>B<, fd_set *>I<set>B<);>\n"
"B<void FD_ZERO(fd_set *>I<set>B<);>\n"
msgstr ""
"B<void FD_CLR(int >I<fd>B<, fd_set *>I<set>B<);>\n"
"B<int  FD_ISSET(int >I<fd>B<, fd_set *>I<set>B<);>\n"
"B<void FD_SET(int >I<fd>B<, fd_set *>I<set>B<);>\n"
"B<void FD_ZERO(fd_set *>I<set>B<);>\n"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid ""
#| "B<int pselect(int >I<nfds>B<, fd_set *>I<readfds>B<, fd_set *>I<writefds>B<,>\n"
#| "B<            fd_set *>I<exceptfds>B<, const struct timespec *>I<timeout>B<,>\n"
#| "B<            const sigset_t *>I<sigmask>B<);>\n"
msgid ""
"B<int pselect(int >I<nfds>B<, fd_set *_Nullable restrict >I<readfds>B<,>\n"
"B<           fd_set *_Nullable restrict >I<writefds>B<,>\n"
"B<           fd_set *_Nullable restrict >I<exceptfds>B<,>\n"
"B<           const struct timespec *_Nullable restrict >I<timeout>B<,>\n"
"B<           const sigset_t *_Nullable restrict >I<sigmask>B<);>\n"
msgstr ""
"B<int pselect(int >I<nfds>B<, fd_set *>I<readfds>B<, fd_set *>I<writefds>B<,>\n"
"B<            fd_set *>I<exceptfds>B<, const struct timespec *>I<timeout>B<,>\n"
"B<            const sigset_t *>I<sigmask>B<);>\n"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Feature Test Macro Requirements for glibc (see B<feature_test_macros>(7)):"
msgstr ""
"Requisitos de macro de teste de recursos para o glibc (consulte "
"B<feature_test_macros>(7)):"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid "pselect()"
msgid "B<pselect>():"
msgstr "pselect()"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "    _POSIX_C_SOURCE E<gt>= 200112L\n"
msgstr "    _POSIX_C_SOURCE E<gt>= 200112L\n"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "DESCRIPTION"
msgstr "DESCRIÇÃO"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<WARNING>: B<select>()  can monitor only file descriptors numbers that are "
"less than B<FD_SETSIZE> (1024)\\[em]an unreasonably low limit for many "
"modern applications\\[em]and this limitation will not change.  All modern "
"applications should instead use B<poll>(2)  or B<epoll>(7), which do not "
"suffer this limitation."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<select>()  allows a program to monitor multiple file descriptors, waiting "
"until one or more of the file descriptors become \"ready\" for some class of "
"I/O operation (e.g., input possible).  A file descriptor is considered ready "
"if it is possible to perform a corresponding I/O operation (e.g., "
"B<read>(2), or a sufficiently small B<write>(2))  without blocking."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "fd_set"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A structure type that can represent a set of file descriptors.  According to "
"POSIX, the maximum number of file descriptors in an I<fd_set> structure is "
"the value of the macro B<FD_SETSIZE>."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "File descriptor sets"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The principal arguments of B<select>()  are three \"sets\" of file "
"descriptors (declared with the type I<fd_set>), which allow the caller to "
"wait for three classes of events on the specified set of file descriptors.  "
"Each of the I<fd_set> arguments may be specified as NULL if no file "
"descriptors are to be watched for the corresponding class of events."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<Note well>: Upon return, each of the file descriptor sets is modified in "
"place to indicate which file descriptors are currently \"ready\".  Thus, if "
"using B<select>()  within a loop, the sets I<must be reinitialized> before "
"each call."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The contents of a file descriptor set can be manipulated using the following "
"macros:"
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<FD_ZERO>()"
msgstr "B<FD_ZERO>()"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This macro clears (removes all file descriptors from)  I<set>.  It should be "
"employed as the first step in initializing a file descriptor set."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<FD_SET>()"
msgstr "B<FD_SET>()"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This macro adds the file descriptor I<fd> to I<set>.  Adding a file "
"descriptor that is already present in the set is a no-op, and does not "
"produce an error."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<FD_CLR>()"
msgstr "B<FD_CLR>()"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This macro removes the file descriptor I<fd> from I<set>.  Removing a file "
"descriptor that is not present in the set is a no-op, and does not produce "
"an error."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<FD_ISSET>()"
msgstr "B<FD_ISSET>()"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<select>()  modifies the contents of the sets according to the rules "
"described below.  After calling B<select>(), the B<FD_ISSET>()  macro can be "
"used to test if a file descriptor is still present in a set.  B<FD_ISSET>()  "
"returns nonzero if the file descriptor I<fd> is present in I<set>, and zero "
"if it is not."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Arguments"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The arguments of B<select>()  are as follows:"
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<readfds>"
msgstr "I<readfds>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The file descriptors in this set are watched to see if they are ready for "
"reading.  A file descriptor is ready for reading if a read operation will "
"not block; in particular, a file descriptor is also ready on end-of-file."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"After B<select>()  has returned, I<readfds> will be cleared of all file "
"descriptors except for those that are ready for reading."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<writefds>"
msgstr "I<writefds>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The file descriptors in this set are watched to see if they are ready for "
"writing.  A file descriptor is ready for writing if a write operation will "
"not block.  However, even if a file descriptor indicates as writable, a "
"large write may still block."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"After B<select>()  has returned, I<writefds> will be cleared of all file "
"descriptors except for those that are ready for writing."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<exceptfds>"
msgstr "I<exceptfds>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The file descriptors in this set are watched for \"exceptional conditions"
"\".  For examples of some exceptional conditions, see the discussion of "
"B<POLLPRI> in B<poll>(2)."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"After B<select>()  has returned, I<exceptfds> will be cleared of all file "
"descriptors except for those for which an exceptional condition has occurred."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<nfds>"
msgstr "I<nfds>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This argument should be set to the highest-numbered file descriptor in any "
"of the three sets, plus 1.  The indicated file descriptors in each set are "
"checked, up to this limit (but see BUGS)."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<timeout>"
msgstr "I<timeout>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The I<timeout> argument is a I<timeval> structure (shown below) that "
"specifies the interval that B<select>()  should block waiting for a file "
"descriptor to become ready.  The call will block until either:"
msgstr ""

#. type: IP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "\\[bu]"
msgstr "\\[bu]"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid "The field descriptions are:"
msgid "a file descriptor becomes ready;"
msgstr "As descrições dos campos são:"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "the call is interrupted by a signal handler; or"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "the timeout expires."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Note that the I<timeout> interval will be rounded up to the system clock "
"granularity, and kernel scheduling delays mean that the blocking interval "
"may overrun by a small amount."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If both fields of the I<timeval> structure are zero, then B<select>()  "
"returns immediately.  (This is useful for polling.)"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If I<timeout> is specified as NULL, B<select>()  blocks indefinitely waiting "
"for a file descriptor to become ready."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "pselect()"
msgstr "pselect()"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The B<pselect>()  system call allows an application to safely wait until "
"either a file descriptor becomes ready or until a signal is caught."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid "Their function is identical, with three differences:"
msgid ""
"The operation of B<select>()  and B<pselect>()  is identical, other than "
"these three differences:"
msgstr "Suas funções são idênticas, com três diferenças:"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "The B<select> function uses a timeout that is a I<struct timeval> (with "
#| "seconds and microseconds), while B<pselect> uses a I<struct timespec> "
#| "(with seconds and nanoseconds)."
msgid ""
"B<select>()  uses a timeout that is a I<struct timeval> (with seconds and "
"microseconds), while B<pselect>()  uses a I<struct timespec> (with seconds "
"and nanoseconds)."
msgstr ""
"A função B<select> usa um tempo de espera que é uma I<struct timeval> (com "
"segundos e microsegundos), enquanto B<pselect> usa uma I<struct timespec> "
"(com segundos e nanosegundos)."

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "The B<select> function may update the I<timeout> parameter to indicate "
#| "how much time was left. The B<pselect> function does not change this "
#| "parameter."
msgid ""
"B<select>()  may update the I<timeout> argument to indicate how much time "
"was left.  B<pselect>()  does not change this argument."
msgstr ""
"A função B<select> pode atualizar o parâmetro I<timeout> para indicar quanto "
"tempo resta. A função B<pselect> não muda esse parâmetro."

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "The B<select> function has no I<sigmask> parameter, and behaves as "
#| "B<pselect> called with NULL I<sigmask>."
msgid ""
"B<select>()  has no I<sigmask> argument, and behaves as B<pselect>()  called "
"with NULL I<sigmask>."
msgstr ""
"A função B<select> não tem parâmetro I<sigmask> e funciona como B<pselect> "
"chamado com I<sigmask> NULO."

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "I<sigmask> is a pointer to a signal mask (see B<sigprocmask>(2)); if it "
#| "is not NULL, then B<pselect> first replaces the current signal mask by "
#| "the one pointed to by I<sigmask>, then does the `select' function, and "
#| "then restores the original signal mask again."
msgid ""
"I<sigmask> is a pointer to a signal mask (see B<sigprocmask>(2)); if it is "
"not NULL, then B<pselect>()  first replaces the current signal mask by the "
"one pointed to by I<sigmask>, then does the \"select\" function, and then "
"restores the original signal mask.  (If I<sigmask> is NULL, the signal mask "
"is not modified during the B<pselect>()  call.)"
msgstr ""
"I<sigmask> é um ponteiro para uma máscara de sinal (veja B<sigprocmask>(2)); "
"se ele não é NULO, então B<pselect> primeiro substitui a máscara de sinal "
"atual pela apontada por I<sigmask>, e aciona a função `select', e então "
"restaura novamente a máscara de sinal original."

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Other than the difference in the precision of the I<timeout> argument, the "
"following B<pselect>()  call:"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"ready = pselect(nfds, &readfds, &writefds, &exceptfds,\n"
"                timeout, &sigmask);\n"
msgstr ""
"ready = pselect(nfds, &readfds, &writefds, &exceptfds,\n"
"                timeout, &sigmask);\n"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "is equivalent to I<atomically> executing the following calls:"
msgstr ""

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid ""
#| "pthread_sigmask(SIG_SETMASK, &sigmask, &origmask);\n"
#| "ready = select(nfds, &readfds, &writefds, &exceptfds, timeout);\n"
#| "pthread_sigmask(SIG_SETMASK, &origmask, NULL);\n"
msgid ""
"sigset_t origmask;\n"
"\\&\n"
"pthread_sigmask(SIG_SETMASK, &sigmask, &origmask);\n"
"ready = select(nfds, &readfds, &writefds, &exceptfds, timeout);\n"
"pthread_sigmask(SIG_SETMASK, &origmask, NULL);\n"
msgstr ""
"pthread_sigmask(SIG_SETMASK, &sigmask, &origmask);\n"
"ready = select(nfds, &readfds, &writefds, &exceptfds, timeout);\n"
"pthread_sigmask(SIG_SETMASK, &origmask, NULL);\n"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "The idea of B<pselect> is that if one wants to wait for an event, either "
#| "a signal or something on a file descriptor, an atomic test is needed to "
#| "prevent race conditions. (Suppose the signal handler sets a global flag "
#| "and returns. Then a test of this global flag followed by a call of "
#| "B<select>()  could hang indefinitely if the signal arrived just after the "
#| "test but just before the call. On the other hand, B<pselect> allows one "
#| "to first block signals, handle the signals that have come in, then call "
#| "B<pselect>()  with the desired I<sigmask>, avoiding the race.)  Since "
#| "Linux today does not have a I<pselect>()  system call, the current glibc2 "
#| "routine still contains this race."
msgid ""
"The reason that B<pselect>()  is needed is that if one wants to wait for "
"either a signal or for a file descriptor to become ready, then an atomic "
"test is needed to prevent race conditions.  (Suppose the signal handler sets "
"a global flag and returns.  Then a test of this global flag followed by a "
"call of B<select>()  could hang indefinitely if the signal arrived just "
"after the test but just before the call.  By contrast, B<pselect>()  allows "
"one to first block signals, handle the signals that have come in, then call "
"B<pselect>()  with the desired I<sigmask>, avoiding the race.)"
msgstr ""
"A idéia do B<pselect> é de que caso se deseje aguardar por um evento, ou um "
"sinal ou algo em um descritor de arquivos, o teste atômico é necessário para "
"prevenir 'race conditions'. (Suponha que o manipulador de sinais defina um "
"sinalizador global e retorne. Então um teste deste sinalizador global "
"seguido de uma chamada de B<select>() poderia travar indefinidamente se o "
"sinal chegou logo após o teste mas antes da chamada. De outro lado, "
"B<pselect> permite primeiro bloquear os sinais, manipular os sinais que "
"chegam, e então chamar B<pselect>() com a I<sigmask>, desejada evitando a "
"'race'.) Como Linux hoje não apresenta uma chamada de sistema, I<pselect>() "
"a rotina glibc2 atual ainda contém esta 'race'."

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "The timeout"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The I<timeout> argument for B<select>()  is a structure of the following "
"type:"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"struct timeval {\n"
"    time_t      tv_sec;         /* seconds */\n"
"    suseconds_t tv_usec;        /* microseconds */\n"
"};\n"
msgstr ""
"struct timeval {\n"
"    time_t      tv_sec;         /* segundos */\n"
"    suseconds_t tv_usec;        /* microsegundos */\n"
"};\n"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The corresponding argument for B<pselect>()  is a B<timespec>(3)  structure."
msgstr ""

#. #-#-#-#-#  archlinux: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .P - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#. #-#-#-#-#  debian-bookworm: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .PP - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#. #-#-#-#-#  debian-unstable: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .P - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#. #-#-#-#-#  fedora-40: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .P - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#. #-#-#-#-#  fedora-rawhide: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .P - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#. #-#-#-#-#  mageia-cauldron: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .P - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#. #-#-#-#-#  opensuse-leap-15-6: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .PP - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#. #-#-#-#-#  opensuse-tumbleweed: select.2.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .P - it is rumored that:
#.  On BSD, when a timeout occurs, the file descriptor bits are not changed.
#.  - it is certainly true that:
#.  Linux follows SUSv2 and sets the bit masks to zero upon a timeout.
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "On Linux, I<timeout> is modified to reflect the amount of time not slept; "
#| "most other implementations do not do this.  This causes problems both "
#| "when Linux code which reads I<timeout> is ported to other operating "
#| "systems, and when code is ported to Linux that reuses a struct timeval "
#| "for multiple B<select>s in a loop without reinitializing it.  Consider "
#| "I<timeout> to be undefined after B<select> returns."
msgid ""
"On Linux, B<select>()  modifies I<timeout> to reflect the amount of time not "
"slept; most other implementations do not do this.  (POSIX.1 permits either "
"behavior.)  This causes problems both when Linux code which reads I<timeout> "
"is ported to other operating systems, and when code is ported to Linux that "
"reuses a I<struct timeval> for multiple B<select>()s in a loop without "
"reinitializing it.  Consider I<timeout> to be undefined after B<select>()  "
"returns."
msgstr ""
"No Linux, I<timeout> é modificado para refletir a quantidade de tempo não "
"inativo; a maior parte das outras implementações não faz isto. Isto causa "
"problemas quando um código Linux que interpreta I<timeout> é portado para "
"outro sistema operacional, e quando código portado para Linux reutiliza uma "
"struct timeval para múltiplos B<select>s em loop sem reinicializá-lo. "
"Considere I<timeout> indefinido após o retorno de B<select>."

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "RETURN VALUE"
msgstr "VALOR DE RETORNO"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On success, B<select>()  and B<pselect>()  return the number of file "
"descriptors contained in the three returned descriptor sets (that is, the "
"total number of bits that are set in I<readfds>, I<writefds>, "
"I<exceptfds>).  The return value may be zero if the timeout expired before "
"any file descriptors became ready."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On error, -1 is returned, and I<errno> is set to indicate the error; the "
"file descriptor sets are unmodified, and I<timeout> becomes undefined."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "ERRORS"
msgstr "ERROS"

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EBADF>"
msgstr "B<EBADF>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"An invalid file descriptor was given in one of the sets.  (Perhaps a file "
"descriptor that was already closed, or one on which an error has occurred.)  "
"However, see BUGS."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EINTR>"
msgstr "B<EINTR>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "A signal was caught; see B<signal>(7)."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EINVAL>"
msgstr "B<EINVAL>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"I<nfds> is negative or exceeds the B<RLIMIT_NOFILE> resource limit (see "
"B<getrlimit>(2))."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The value contained within I<timeout> is invalid."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<ENOMEM>"
msgstr "B<ENOMEM>"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid "B<select> was unable to allocate memory for internal tables."
msgid "Unable to allocate memory for internal tables."
msgstr "B<select> não foi capaz de alocar memória para tabelas internas."

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "VERSIONS"
msgstr "VERSÕES"

#.  Darwin, according to a report by Jeremy Sequoia, relayed by Josh Triplett
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On some other UNIX systems, B<select>()  can fail with the error B<EAGAIN> "
"if the system fails to allocate kernel-internal resources, rather than "
"B<ENOMEM> as Linux does.  POSIX specifies this error for B<poll>(2), but not "
"for B<select>().  Portable programs may wish to check for B<EAGAIN> and "
"loop, just as with B<EINTR>."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "STANDARDS"
msgstr "PADRÕES"

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2008."
msgstr "POSIX.1-2008."

#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "HISTORY"
msgstr "HISTÓRICO"

#. type: TP
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid "pselect()"
msgid "B<select>()"
msgstr "pselect()"

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid "POSIX.1-2001, SVr4, 4.3BSD."
msgid "POSIX.1-2001, 4.4BSD (first appeared in 4.2BSD)."
msgstr "POSIX.1-2001, SVr4, 4.3BSD."

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "4.4BSD (the B<select> function first appeared in 4.2BSD).  Generally "
#| "portable to/from non-BSD systems supporting clones of the BSD socket "
#| "layer (including System V variants).  However, note that the System V "
#| "variant typically sets the timeout variable before exit, but the BSD "
#| "variant does not."
msgid ""
"Generally portable to/from non-BSD systems supporting clones of the BSD "
"socket layer (including System\\ V variants).  However, note that the System"
"\\ V variant typically sets the timeout variable before returning, but the "
"BSD variant does not."
msgstr ""
"BSD 4.4 (a função B<select> surgiu no BSD 4.2). Geralmente portável de/para "
"sistemas não-BSD com suporte a clones da camada de 'socket' BSD (incluindo "
"variações do System V). No entanto, note que o variante de System V "
"tipicamente define a variável de tempo de espera antes de sair, mas o "
"variante de BSD não."

#. type: TP
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid "pselect()"
msgid "B<pselect>()"
msgstr "pselect()"

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid "glibc 2.1.  C99, POSIX.1-2001."
msgid "Linux 2.6.16.  POSIX.1g, POSIX.1-2001."
msgstr "glibc 2.1.  C99, POSIX.1-2001."

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "Prior to this, it was emulated in glibc (but see BUGS)."
msgstr ""

#. type: TP
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid "I<offset>"
msgid "B<fd_set>"
msgstr "I<offset>"

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2001."
msgstr "POSIX.1-2001."

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NOTES"
msgstr "NOTAS"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The following header also provides the I<fd_set> type: I<E<lt>sys/time."
"hE<gt>>."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"An I<fd_set> is a fixed size buffer.  Executing B<FD_CLR>()  or B<FD_SET>()  "
"with a value of I<fd> that is negative or is equal to or larger than "
"B<FD_SETSIZE> will result in undefined behavior.  Moreover, POSIX requires "
"I<fd> to be a valid file descriptor."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The operation of B<select>()  and B<pselect>()  is not affected by the "
"B<O_NONBLOCK> flag."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "The self-pipe trick"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On systems that lack B<pselect>(), reliable (and more portable) signal "
"trapping can be achieved using the self-pipe trick.  In this technique, a "
"signal handler writes a byte to a pipe whose other end is monitored by "
"B<select>()  in the main program.  (To avoid possibly blocking when writing "
"to a pipe that may be full or reading from a pipe that may be empty, "
"nonblocking I/O is used when reading from and writing to the pipe.)"
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Emulating usleep(3)"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "Some code calls B<select> with all three sets empty, I<n> zero, and a non-"
#| "null I<timeout> as a fairly portable way to sleep with subsecond "
#| "precision."
msgid ""
"Before the advent of B<usleep>(3), some code employed a call to B<select>()  "
"with all three sets empty, I<nfds> zero, and a non-NULL I<timeout> as a "
"fairly portable way to sleep with subsecond precision."
msgstr ""
"Algum código chamou B<select> com os três conjuntos vazios, I<n> zero, e um "
"I<timeout> não-nulo, como uma certa forma de desativar com precisão de "
"subsegundo."

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Correspondence between select() and poll() notifications"
msgstr ""

#.  fs/select.c
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Within the Linux kernel source, we find the following definitions which show "
"the correspondence between the readable, writable, and exceptional condition "
"notifications of B<select>()  and the event notifications provided by "
"B<poll>(2)  and B<epoll>(7):"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"#define POLLIN_SET  (EPOLLRDNORM | EPOLLRDBAND | EPOLLIN |\n"
"                     EPOLLHUP | EPOLLERR)\n"
"                   /* Ready for reading */\n"
"#define POLLOUT_SET (EPOLLWRBAND | EPOLLWRNORM | EPOLLOUT |\n"
"                     EPOLLERR)\n"
"                   /* Ready for writing */\n"
"#define POLLEX_SET  (EPOLLPRI)\n"
"                   /* Exceptional condition */\n"
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Multithreaded applications"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If a file descriptor being monitored by B<select>()  is closed in another "
"thread, the result is unspecified.  On some UNIX systems, B<select>()  "
"unblocks and returns, with an indication that the file descriptor is ready "
"(a subsequent I/O operation will likely fail with an error, unless another "
"process reopens the file descriptor between the time B<select>()  returned "
"and the I/O operation is performed).  On Linux (and some other systems), "
"closing the file descriptor in another thread has no effect on B<select>().  "
"In summary, any application that relies on a particular behavior in this "
"scenario must be considered buggy."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "C library/kernel differences"
msgstr "Diferenças entre kernel/biblioteca C"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The Linux kernel allows file descriptor sets of arbitrary size, determining "
"the length of the sets to be checked from the value of I<nfds>.  However, in "
"the glibc implementation, the I<fd_set> type is fixed in size.  See also "
"BUGS."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The B<pselect>()  interface described in this page is implemented by glibc.  "
"The underlying Linux system call is named B<pselect6>().  This system call "
"has somewhat different behavior from the glibc wrapper function."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The Linux B<pselect6>()  system call modifies its I<timeout> argument.  "
"However, the glibc wrapper function hides this behavior by using a local "
"variable for the timeout argument that is passed to the system call.  Thus, "
"the glibc B<pselect>()  function does not modify its I<timeout> argument; "
"this is the behavior required by POSIX.1-2001."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The final argument of the B<pselect6>()  system call is not a I<sigset_t\\ "
"*> pointer, but is instead a structure of the form:"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"struct {\n"
"    const kernel_sigset_t *ss;   /* Pointer to signal set */\n"
"    size_t ss_len;               /* Size (in bytes) of object\n"
"                                    pointed to by \\[aq]ss\\[aq] */\n"
"};\n"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This allows the system call to obtain both a pointer to the signal set and "
"its size, while allowing for the fact that most architectures support a "
"maximum of 6 arguments to a system call.  See B<sigprocmask>(2)  for a "
"discussion of the difference between the kernel and libc notion of the "
"signal set."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Historical glibc details"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"glibc 2.0 provided an incorrect version of B<pselect>()  that did not take a "
"I<sigmask> argument."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"From glibc 2.1 to glibc 2.2.1, one must define B<_GNU_SOURCE> in order to "
"obtain the declaration of B<pselect>()  from I<E<lt>sys/select.hE<gt>>."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "BUGS"
msgstr "BUGS"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"POSIX allows an implementation to define an upper limit, advertised via the "
"constant B<FD_SETSIZE>, on the range of file descriptors that can be "
"specified in a file descriptor set.  The Linux kernel imposes no fixed "
"limit, but the glibc implementation makes I<fd_set> a fixed-size type, with "
"B<FD_SETSIZE> defined as 1024, and the B<FD_*>()  macros operating according "
"to that limit.  To monitor file descriptors greater than 1023, use "
"B<poll>(2)  or B<epoll>(7)  instead."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The implementation of the I<fd_set> arguments as value-result arguments is a "
"design error that is avoided in B<poll>(2)  and B<epoll>(7)."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"According to POSIX, B<select>()  should check all specified file descriptors "
"in the three file descriptor sets, up to the limit I<nfds-1>.  However, the "
"current implementation ignores any file descriptor in these sets that is "
"greater than the maximum file descriptor number that the process currently "
"has open.  According to POSIX, any such file descriptor that is specified in "
"one of the sets should result in the error B<EBADF>."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Starting with glibc 2.1, glibc provided an emulation of B<pselect>()  that "
"was implemented using B<sigprocmask>(2)  and B<select>().  This "
"implementation remained vulnerable to the very race condition that "
"B<pselect>()  was designed to prevent.  Modern versions of glibc use the "
"(race-free)  B<pselect>()  system call on kernels where it is provided."
msgstr ""

#.  Stevens discusses a case where accept can block after select
#.  returns successfully because of an intervening RST from the client.
#.  Maybe the kernel should have returned EIO in such a situation?
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On Linux, B<select>()  may report a socket file descriptor as \"ready for "
"reading\", while nevertheless a subsequent read blocks.  This could for "
"example happen when data has arrived but upon examination has the wrong "
"checksum and is discarded.  There may be other circumstances in which a file "
"descriptor is spuriously reported as ready.  Thus it may be safer to use "
"B<O_NONBLOCK> on sockets that should not block."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On Linux, B<select>()  also modifies I<timeout> if the call is interrupted "
"by a signal handler (i.e., the B<EINTR> error return).  This is not "
"permitted by POSIX.1.  The Linux B<pselect>()  system call has the same "
"behavior, but the glibc wrapper hides this behavior by internally copying "
"the I<timeout> to a local variable and passing that variable to the system "
"call."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "EXAMPLES"
msgstr "EXEMPLOS"

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>sys/select.hE<gt>\n"
"\\&\n"
"int\n"
"main(void)\n"
"{\n"
"    int             retval;\n"
"    fd_set          rfds;\n"
"    struct timeval  tv;\n"
"\\&\n"
"    /* Watch stdin (fd 0) to see when it has input. */\n"
"\\&\n"
"    FD_ZERO(&rfds);\n"
"    FD_SET(0, &rfds);\n"
"\\&\n"
"    /* Wait up to five seconds. */\n"
"\\&\n"
"    tv.tv_sec = 5;\n"
"    tv.tv_usec = 0;\n"
"\\&\n"
"    retval = select(1, &rfds, NULL, NULL, &tv);\n"
"    /* Don\\[aq]t rely on the value of tv now! */\n"
"\\&\n"
"    if (retval == -1)\n"
"        perror(\"select()\");\n"
"    else if (retval)\n"
"        printf(\"Data is available now.\\en\");\n"
"        /* FD_ISSET(0, &rfds) will be true. */\n"
"    else\n"
"        printf(\"No data within five seconds.\\en\");\n"
"\\&\n"
"    exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""

#.  SRC END
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SEE ALSO"
msgstr "VEJA TAMBÉM"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid ""
#| "B<accept>(2), B<connect>(2), B<poll>(2), B<read>(2), B<recv>(2), "
#| "B<restart_syscall>(2), B<send>(2), B<sigprocmask>(2), B<write>(2), "
#| "B<epoll>(7), B<time>(7)"
msgid ""
"B<accept>(2), B<connect>(2), B<poll>(2), B<read>(2), B<recv>(2), "
"B<restart_syscall>(2), B<send>(2), B<sigprocmask>(2), B<write>(2), "
"B<timespec>(3), B<epoll>(7), B<time>(7)"
msgstr ""
"B<accept>(2), B<connect>(2), B<poll>(2), B<read>(2), B<recv>(2), "
"B<restart_syscall>(2), B<send>(2), B<sigprocmask>(2), B<write>(2), "
"B<epoll>(7), B<time>(7)"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "For a tutorial with discussion and examples, see B<select_tut>(2)."
msgstr ""

#. type: TH
#: debian-bookworm
#, no-wrap
msgid "2023-02-05"
msgstr "5 fevereiro 2023"

#. type: TH
#: debian-bookworm
#, no-wrap
msgid "Linux man-pages 6.03"
msgstr "Linux man-pages 6.03"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "sigset_t origmask;\n"
msgstr "sigset_t origmask;\n"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"pthread_sigmask(SIG_SETMASK, &sigmask, &origmask);\n"
"ready = select(nfds, &readfds, &writefds, &exceptfds, timeout);\n"
"pthread_sigmask(SIG_SETMASK, &origmask, NULL);\n"
msgstr ""
"pthread_sigmask(SIG_SETMASK, &sigmask, &origmask);\n"
"ready = select(nfds, &readfds, &writefds, &exceptfds, timeout);\n"
"pthread_sigmask(SIG_SETMASK, &origmask, NULL);\n"

#. type: Plain text
#: debian-bookworm
msgid ""
"B<pselect>()  was added in Linux 2.6.16.  Prior to this, B<pselect>()  was "
"emulated in glibc (but see BUGS)."
msgstr ""

#. type: Plain text
#: debian-bookworm
#, fuzzy
#| msgid ""
#| "4.4BSD (the B<select> function first appeared in 4.2BSD).  Generally "
#| "portable to/from non-BSD systems supporting clones of the BSD socket "
#| "layer (including System V variants).  However, note that the System V "
#| "variant typically sets the timeout variable before exit, but the BSD "
#| "variant does not."
msgid ""
"B<select>()  conforms to POSIX.1-2001, POSIX.1-2008, and 4.4BSD "
"(B<select>()  first appeared in 4.2BSD).  Generally portable to/from non-BSD "
"systems supporting clones of the BSD socket layer (including System\\ V "
"variants).  However, note that the System\\ V variant typically sets the "
"timeout variable before returning, but the BSD variant does not."
msgstr ""
"BSD 4.4 (a função B<select> surgiu no BSD 4.2). Geralmente portável de/para "
"sistemas não-BSD com suporte a clones da camada de 'socket' BSD (incluindo "
"variações do System V). No entanto, note que o variante de System V "
"tipicamente define a variável de tempo de espera antes de sair, mas o "
"variante de BSD não."

#. type: Plain text
#: debian-bookworm
msgid ""
"B<pselect>()  is defined in POSIX.1g, and in POSIX.1-2001 and POSIX.1-2008."
msgstr ""

#. type: Plain text
#: debian-bookworm
msgid "B<fd_set> is defined in POSIX.1-2001 and later."
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>sys/select.hE<gt>\n"
msgstr ""
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>sys/select.hE<gt>\n"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, fuzzy, no-wrap
#| msgid ""
#| "int\n"
#| "main(void)\n"
#| "{\n"
#| "    fd_set rfds;\n"
#| "    struct timeval tv;\n"
#| "    int retval;\n"
msgid ""
"int\n"
"main(void)\n"
"{\n"
"    int             retval;\n"
"    fd_set          rfds;\n"
"    struct timeval  tv;\n"
msgstr ""
"int\n"
"main(void)\n"
"{\n"
"    fd_set rfds;\n"
"    struct timeval tv;\n"
"    int retval;\n"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "    /* Watch stdin (fd 0) to see when it has input. */\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    FD_ZERO(&rfds);\n"
"    FD_SET(0, &rfds);\n"
msgstr ""
"    FD_ZERO(&rfds);\n"
"    FD_SET(0, &rfds);\n"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "    /* Wait up to five seconds. */\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    tv.tv_sec = 5;\n"
"    tv.tv_usec = 0;\n"
msgstr ""
"    tv.tv_sec = 5;\n"
"    tv.tv_usec = 0;\n"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, fuzzy, no-wrap
#| msgid ""
#| "    retval = select(1, &rfds, NULL, NULL, &tv);\n"
#| "    /* Don't rely on the value of tv now! */\n"
msgid ""
"    retval = select(1, &rfds, NULL, NULL, &tv);\n"
"    /* Don\\[aq]t rely on the value of tv now! */\n"
msgstr ""
"    retval = select(1, &rfds, NULL, NULL, &tv);\n"
"    /* Não dependa do valor de tv agora! */\n"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, fuzzy, no-wrap
#| msgid ""
#| "    if (retval)\n"
#| "        printf(\"Data is available now.\\en\");\n"
#| "        /* FD_ISSET(0, &rfds) will be true. */\n"
#| "    else\n"
#| "        printf(\"No data within five seconds.\\en\");\n"
msgid ""
"    if (retval == -1)\n"
"        perror(\"select()\");\n"
"    else if (retval)\n"
"        printf(\"Data is available now.\\en\");\n"
"        /* FD_ISSET(0, &rfds) will be true. */\n"
"    else\n"
"        printf(\"No data within five seconds.\\en\");\n"
msgstr ""
"    if (retval)\n"
"        printf(\"Dados estão disponíveis agora.\\en\");\n"
"        /* FD_ISSET(0, &rfds) será verdadeiro. */\n"
"    else\n"
"        printf(\"Sem dados dentro de 5 segundos.\\en\");\n"

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
"    exit(EXIT_SUCCESS);\n"
"}\n"

#. type: TH
#: fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "2023-10-31"
msgstr "31 outubro 2023"

#. type: TH
#: fedora-40 mageia-cauldron
#, no-wrap
msgid "Linux man-pages 6.06"
msgstr "Linux man-pages 6.06"

#. type: TH
#: fedora-rawhide
#, no-wrap
msgid "Linux man-pages 6.7"
msgstr "Linux man-pages 6.7"

#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "2023-03-30"
msgstr "30 março 2023"

#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "Linux man-pages 6.04"
msgstr "Linux man-pages 6.04"

#. type: TH
#: opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid "Linux man-pages 6.7"
msgid "Linux man-pages (unreleased)"
msgstr "Linux man-pages 6.7"