mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-03-03 15:38:22 +00:00
80 lines
3.5 KiB
C
80 lines
3.5 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/sig.internal.h"
|
|
#include "libc/calls/state.internal.h"
|
|
#include "libc/calls/syscall_support-nt.internal.h"
|
|
#include "libc/cosmo.h"
|
|
#include "libc/nt/enum/wait.h"
|
|
#include "libc/nt/runtime.h"
|
|
#include "libc/nt/synchronization.h"
|
|
#include "libc/nt/thread.h"
|
|
#include "libc/sysv/consts/sa.h"
|
|
#include "libc/sysv/consts/sicode.h"
|
|
#include "libc/sysv/consts/sig.h"
|
|
#include "libc/thread/tls.h"
|
|
#include "libc/thread/tls2.internal.h"
|
|
#ifdef __x86_64__
|
|
|
|
intptr_t __sigchld_thread;
|
|
static atomic_uint __sigchld_once;
|
|
static struct CosmoTib __sigchld_tls;
|
|
|
|
static textwindows bool __sigchld_check(void) {
|
|
bool should_signal = false;
|
|
for (;;) {
|
|
int pids[64];
|
|
int64_t handles[64];
|
|
uint32_t n = __sample_pids(pids, handles, true);
|
|
if (!n) return should_signal;
|
|
uint32_t i = WaitForMultipleObjects(n, handles, false, 0);
|
|
if (i == kNtWaitFailed) return should_signal;
|
|
if (i == kNtWaitTimeout) return should_signal;
|
|
i &= ~kNtWaitAbandoned;
|
|
if ((__sighandrvas[SIGCHLD] >= kSigactionMinRva) &&
|
|
(__sighandflags[SIGCHLD] & SA_NOCLDWAIT)) {
|
|
CloseHandle(handles[i]);
|
|
__releasefd(pids[i]);
|
|
} else {
|
|
g_fds.p[pids[i]].zombie = true;
|
|
}
|
|
should_signal = true;
|
|
}
|
|
}
|
|
|
|
static textwindows uint32_t __sigchld_worker(void *arg) {
|
|
__set_tls_win32(&__sigchld_tls);
|
|
for (;;) {
|
|
if (__sigchld_check()) {
|
|
__sig_notify(SIGCHLD, CLD_EXITED);
|
|
}
|
|
SleepEx(100, false);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static textwindows void __sigchld_init(void) {
|
|
__sigchld_thread = CreateThread(0, 65536, __sigchld_worker, 0, 0, 0);
|
|
}
|
|
|
|
void _init_sigchld(void) {
|
|
cosmo_once(&__sigchld_once, __sigchld_init);
|
|
}
|
|
|
|
#endif /* __x86_64__ */
|