cosmopolitan/libc/intrin/describemsg.c
Justine Tunney 87a6669900
Make more Windows socket fixes and improvements
This change makes send() / sendto() always block on Windows. It's needed
because poll(POLLOUT) doesn't guarantee a socket is immediately writable
on Windows, and it caused rsync to fail because it made that assumption.
The only exception is when a SO_SNDTIMEO is specified which will EAGAIN.

Tests are added confirming MSG_WAITALL and MSG_NOSIGNAL work as expected
on all our supported OSes. Most of the platform-specific MSG_FOO magnums
have been deleted, with the exception of MSG_FASTOPEN. Your --strace log
will now show MSG_FOO flags as symbols rather than numbers.

I've also removed cv_wait_example_test because it's 0.3% flaky with Qemu
under system load since it depends on a process being readily scheduled.
2024-09-18 20:29:42 -07:00

36 lines
2.4 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2024 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/intrin/describeflags.h"
#include "libc/macros.h"
#include "libc/sysv/consts/msg.h"
const char *_DescribeMsg(char buf[16], int x) {
const struct DescribeFlags kMsgFlags[] = {
{MSG_FASTOPEN, "FASTOPEN"}, // order matters
{MSG_OOB, "OOB"}, //
{MSG_PEEK, "PEEK"}, //
{MSG_DONTROUTE, "DONTROUTE"}, //
{MSG_DONTWAIT, "DONTWAIT"}, //
{MSG_WAITALL, "WAITALL"}, //
{MSG_NOSIGNAL, "NOSIGNAL"}, //
{MSG_TRUNC, "TRUNC"}, //
{MSG_CTRUNC, "CTRUNC"}, //
};
return _DescribeFlags(buf, 16, kMsgFlags, ARRAYLEN(kMsgFlags), "MSG_", x);
}