mirror of
https://github.com/jart/cosmopolitan.git
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53 lines
2.9 KiB
C
53 lines
2.9 KiB
C
/*-*- 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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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/bits.h"
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#include "libc/calls/internal.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/struct/pollfd.h"
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#include "libc/nt/winsock.h"
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#include "libc/sock/internal.h"
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#include "libc/sock/yoink.inc"
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#include "libc/sysv/consts/poll.h"
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#include "libc/sysv/errfuns.h"
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textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t timeoutms) {
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int got;
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size_t i;
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uint64_t waitfor;
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struct sys_pollfd_nt ntfds[64];
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if (nfds > 64) return einval();
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for (i = 0; i < nfds; ++i) {
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if (!__isfdkind(fds[i].fd, kFdSocket)) return ebadf();
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ntfds[i].handle = g_fds.p[fds[i].fd].handle;
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ntfds[i].events = fds[i].events & (POLLPRI | POLLIN | POLLOUT);
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}
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for (;;) {
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if (cmpxchg(&__interrupted, true, false)) return eintr();
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waitfor = MIN(1000, timeoutms); /* for ctrl+c */
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if ((got = WSAPoll(ntfds, nfds, waitfor)) != -1) {
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if (!got && (timeoutms -= waitfor)) continue;
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for (i = 0; i < nfds; ++i) {
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fds[i].revents = ntfds[i].revents;
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}
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return got;
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} else {
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return __winsockerr();
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}
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}
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}
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