/*-*- 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);
}