mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
933411ba99
- Fix bugs in kDos2Errno definition - malloc() should now be thread safe - Fix bug in rollup.com header generator - Fix open(O_APPEND) on the New Technology - Fix select() on the New Technology and test it - Work towards refactoring i/o for thread safety - Socket reads and writes on NT now poll for signals - Work towards i/o completion ports on the New Technology - Make read() and write() intermittently check for signals - Blinkenlights keyboard i/o so much better on NT w/ poll() - You can now poll() files and sockets at the same time on NT - Fix bug in appendr() that manifests with dlmalloc footers off
86 lines
3.7 KiB
C
86 lines
3.7 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/calls/sig.internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/nt/enum/wait.h"
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#include "libc/nt/errors.h"
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#include "libc/nt/struct/overlapped.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/sysv/errfuns.h"
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/**
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* Performs datagram socket send on the New Technology.
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*
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* @param fd must be a socket
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* @return number of bytes handed off, or -1 w/ errno
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*/
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textwindows ssize_t sys_sendto_nt(int fd, const struct iovec *iov,
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size_t iovlen, uint32_t flags,
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void *opt_in_addr, uint32_t in_addrsize) {
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ssize_t rc;
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uint32_t i, sent = 0;
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struct NtIovec iovnt[16];
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struct NtOverlapped overlapped = {.hEvent = WSACreateEvent()};
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if (_check_interrupts(true, g_fds.p)) return eintr();
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if (!WSASendTo(g_fds.p[fd].handle, iovnt, __iovec2nt(iovnt, iov, iovlen),
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&sent, flags, opt_in_addr, in_addrsize, &overlapped, NULL)) {
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rc = sent;
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goto Finished;
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}
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if (WSAGetLastError() != kNtErrorIoPending) {
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STRACE("WSASendTo failed %lm");
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rc = __winsockerr();
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goto Finished;
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}
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for (;;) {
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i = WSAWaitForMultipleEvents(1, &overlapped.hEvent, true,
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__SIG_POLLING_INTERVAL_MS, true);
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if (i == kNtWaitFailed) {
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STRACE("WSAWaitForMultipleEvents failed %lm");
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rc = __winsockerr();
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goto Finished;
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} else if (i == kNtWaitTimeout) {
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if (_check_interrupts(true, g_fds.p)) {
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rc = eintr();
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goto Finished;
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}
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} else if (i == kNtWaitIoCompletion) {
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STRACE("IOCP TRIGGERED EINTR");
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} else {
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break;
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}
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}
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if (!WSAGetOverlappedResult(g_fds.p[fd].handle, &overlapped, &sent, false,
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&flags)) {
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STRACE("WSAGetOverlappedResult failed %lm");
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rc = __winsockerr();
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goto Finished;
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}
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rc = sent;
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Finished:
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WSACloseEvent(overlapped.hEvent);
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return rc;
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}
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