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Simplify GNU Make build config

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Justine Tunney 2023-12-06 03:24:35 -08:00
parent 394d998315
commit 7c39818c13
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7 changed files with 10 additions and 1728 deletions
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libc/calls/select.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set noet ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 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/sock/select.h"
#include "libc/calls/cp.internal.h"
#include "libc/calls/struct/itimerval.internal.h"
#include "libc/calls/struct/timespec.h"
#include "libc/calls/struct/timeval.h"
#include "libc/calls/struct/timeval.internal.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/strace.internal.h"
#include "libc/sock/internal.h"
#include "libc/sock/select.h"
#include "libc/sock/select.internal.h"
#include "libc/sysv/errfuns.h"
/**
* Does what poll() does except with bitset API.
*
* This system call is supported on all platforms. However, on Windows,
* this is polyfilled to translate into poll(). So it's recommended that
* poll() be used instead.
*
* @raise ECANCELED if thread was cancelled in masked mode
* @raise EINTR if signal was delivered
* @cancelationpoint
* @asyncsignalsafe
* @norestart
*/
int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
struct timeval *timeout) {
int rc;
fd_set old_readfds;
fd_set *old_readfds_ptr = 0;
fd_set old_writefds;
fd_set *old_writefds_ptr = 0;
fd_set old_exceptfds;
fd_set *old_exceptfds_ptr = 0;
struct timeval old_timeout;
struct timeval *old_timeout_ptr = 0;
POLLTRACE("select(%d, %p, %p, %p, %s) → ...", nfds, readfds, writefds,
exceptfds, DescribeTimeval(0, timeout));
BEGIN_CANCELATION_POINT;
if (nfds < 0) {
rc = einval();
} else if (IsAsan() &&
((readfds && !__asan_is_valid(readfds, FD_SIZE(nfds))) ||
(writefds && !__asan_is_valid(writefds, FD_SIZE(nfds))) ||
(exceptfds && !__asan_is_valid(exceptfds, FD_SIZE(nfds))) ||
(timeout && !__asan_is_valid(timeout, sizeof(*timeout))))) {
rc = efault();
} else {
if (readfds) {
old_readfds = *readfds;
old_readfds_ptr = &old_readfds;
}
if (writefds) {
old_writefds = *writefds;
old_writefds_ptr = &old_writefds;
}
if (exceptfds) {
old_exceptfds = *exceptfds;
old_exceptfds_ptr = &old_exceptfds;
}
if (timeout) {
old_timeout = *timeout;
old_timeout_ptr = &old_timeout;
}
if (!IsWindows()) {
#ifdef __aarch64__
struct timespec ts, *tsp;
if (timeout) {
ts = timeval_totimespec(*timeout);
tsp = &ts;
} else {
tsp = 0;
}
rc = sys_pselect(nfds, readfds, writefds, exceptfds, tsp, 0);
if (timeout) {
*timeout = timespec_totimeval(ts);
}
#else
rc = sys_select(nfds, readfds, writefds, exceptfds, timeout);
#endif
} else {
rc = sys_select_nt(nfds, readfds, writefds, exceptfds, timeout, 0);
}
}
END_CANCELATION_POINT;
STRACE("select(%d, %s → [%s], %s → [%s], %s → [%s], %s → [%s]) → %d% m", nfds,
DescribeFdSet(rc, nfds, old_readfds_ptr),
DescribeFdSet(rc, nfds, readfds),
DescribeFdSet(rc, nfds, old_writefds_ptr),
DescribeFdSet(rc, nfds, writefds),
DescribeFdSet(rc, nfds, old_exceptfds_ptr),
DescribeFdSet(rc, nfds, exceptfds), //
DescribeTimeval(rc, old_timeout_ptr), //
DescribeTimeval(rc, timeout), rc);
return rc;
}