47 lines
2.8 KiB
C
47 lines
2.8 KiB
C
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/dce.h"
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#include "libc/sock/internal.h"
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#include "libc/sock/sock.h"
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/**
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* Waits for something to happen on multiple file descriptors at once.
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*
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* @param fds[𝑖].fd should have been created with SOCK_NONBLOCK passed
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* to socket() or accept4()
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* @param fds[𝑖].events flags can have POLL{IN,OUT,PRI}
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* @param timeout_ms if 0 means don't wait and -1 means wait forever
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* @return number of items fds whose revents field has been set to
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* nonzero to describe its events, or -1 w/ errno
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* @return fds[𝑖].revents flags can have:
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* (fds[𝑖].events & POLL{IN,OUT,PRI,HUP,ERR,NVAL})
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* @asyncsignalsafe
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* @see ppoll()
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*/
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int poll(struct pollfd *fds, uint64_t nfds, int32_t timeout_ms) {
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if (!IsWindows()) {
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return poll$sysv(fds, nfds, timeout_ms);
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} else {
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return poll$nt(fds, nfds, timeout_ms);
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}
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}
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