1/*	$NetBSD: rump_curlwp___thread.h,v 1.3 2018/04/19 21:50:10 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2014 Antti Kantee.  All Rights Reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28extern __thread struct lwp *curlwp_storage;
29#ifdef RUMP__CURLWP_PRIVATE
30#include <rump/rumpuser.h>
31
32__thread struct lwp *curlwp_storage;
33static void
34lwproc_curlwpop(enum rumplwpop op, struct lwp *l)
35{
36
37	switch (op) {
38	case RUMPUSER_LWP_CREATE:
39	case RUMPUSER_LWP_DESTROY:
40		break;
41	case RUMPUSER_LWP_SET:
42		KASSERT(curlwp_storage == NULL);
43		curlwp_storage = l;
44		break;
45	case RUMPUSER_LWP_CLEAR:
46		KASSERT(curlwp_storage == l);
47		curlwp_storage = NULL;
48		break;
49	}
50	/*
51	 * Need to keep hypercall layer in sync, since it can use curlwp
52	 * for things like mutexes.  Should be fixed/adjusted somehow.
53	 */
54	rumpuser_curlwpop(op, l);
55}
56#endif
57
58static __inline struct lwp * __attribute__((const))
59rump_curlwp_fast(void)
60{
61
62	return curlwp_storage;
63}
64