mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
56 lines
2.9 KiB
C
56 lines
2.9 KiB
C
|
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
||
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
||
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
||
|
|
│ Copyright 2022 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/calls/internal.h"
|
||
|
|
#include "libc/calls/strace.internal.h"
|
||
|
|
#include "libc/calls/struct/siginfo.h"
|
||
|
|
#include "libc/calls/typedef/sigaction_f.h"
|
||
|
|
#include "libc/nt/enum/status.h"
|
||
|
|
#include "libc/nt/enum/wait.h"
|
||
|
|
#include "libc/nt/runtime.h"
|
||
|
|
#include "libc/nt/synchronization.h"
|
||
|
|
#include "libc/runtime/runtime.h"
|
||
|
|
#include "libc/sysv/consts/sicode.h"
|
||
|
|
#include "libc/sysv/consts/sig.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks to see if SIGCHLD should be raised on Windows.
|
||
|
|
* @return true if a signal was raised
|
||
|
|
*/
|
||
|
|
bool _check_sigchld(void) {
|
||
|
|
siginfo_t si;
|
||
|
|
int pids[64];
|
||
|
|
uint32_t i, n;
|
||
|
|
int64_t handles[64];
|
||
|
|
if (__sighandrvas[SIGCHLD] < kSigactionMinRva) return false;
|
||
|
|
if (!(n = __sample_pids(pids, handles))) return false;
|
||
|
|
i = WaitForMultipleObjects(n, handles, false, 0);
|
||
|
|
if (i == kNtWaitTimeout) return false;
|
||
|
|
if (i == kNtWaitFailed) {
|
||
|
|
STRACE("%s failed %u", "WaitForMultipleObjects", GetLastError());
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
STRACE("SIGCHLD fd=%d handle=%ld", pids[i], handles[i]);
|
||
|
|
bzero(&si, sizeof(si));
|
||
|
|
si.si_signo = SIGCHLD;
|
||
|
|
si.si_code = CLD_EXITED;
|
||
|
|
si.si_pid = pids[i];
|
||
|
|
((sigaction_f)(_base + __sighandrvas[SIGCHLD]))(SIGCHLD, &si, 0);
|
||
|
|
return true;
|
||
|
|
}
|