cosmopolitan/libc/thread/exit.c
Justine Tunney 7166679620 Fix bugs and add security features to redbean
- Fix a regression with the previous change that broke redbean
- Add chroot(), resource limit, seccomp, and other stuff to redbean
- Write lots and lots of documentation
- Iron out more system call issues
2022-04-18 00:01:26 -07:00

46 lines
2.5 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 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/calls/internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/intrin/lockxadd.h"
#include "libc/runtime/runtime.h"
#include "libc/thread/descriptor.h"
#include "libc/thread/exit.h"
#include "libc/thread/self.h"
/**
* Exits cosmopolitan thread.
*
* @param rc is exit code
* @see _Exit1() for the raw system call
* @threadsafe
* @noreturn
*/
wontreturn void cthread_exit(int rc) {
cthread_t td;
STRACE("cthread_exit(%d)", rc);
td = cthread_self();
td->rc = rc;
_lockxadd(&td->state, cthread_finished);
if (~td->state & cthread_detached) {
sys_munmap(td->alloc.bottom,
(intptr_t)td->alloc.top - (intptr_t)td->alloc.bottom);
}
_Exit1(rc);
}