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/* $OpenBSD: rthread_reaper.c,v 1.3 2007/04/10 17:39:21 tedu Exp $ */
/*
* Copyright (c) 2006 Otto Moerbeek <otto@drijf.net>
*
* Permission to use, copy, modify, and 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 <sys/types.h>
#include <sys/event.h>
#include <errno.h>
#include <machine/spinlock.h>
#include <pthread.h>
#include "rthread.h"
int _rthread_kq;
void
_rthread_add_to_reaper(pid_t t, struct stack *s)
{
struct kevent kc;
int n;
_rthread_debug(1, "Adding %d to reaper\n", t);
EV_SET(&kc, t, EVFILT_PROC, EV_ADD|EV_CLEAR, NOTE_EXIT, 0, s);
n = kevent(_rthread_kq, &kc, 1, NULL, 0, NULL);
if (n == -1)
_rthread_debug(0, "_rthread_add_to_reaper(): kevent %d\n", errno);
}
/* ARGSUSED */
void
_rthread_reaper(void)
{
struct kevent ke;
int n;
struct timespec t;
t.tv_sec = 0;
t.tv_nsec = 0;
for (;;) {
n = kevent(_rthread_kq, NULL, 0, &ke, 1, &t);
if (n == -1)
_rthread_debug(0, "_rthread_reaper(): kevent %d\n", errno);
else if (n == 0)
break;
else {
_rthread_debug(1, "_rthread_reaper(): %d died\n",
ke.ident);
/* XXX check error conditions */
_rthread_free_stack(ke.udata);
}
}
}
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