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
28 extern __thread struct lwp *curlwp_storage;
29 #ifdef RUMP__CURLWP_PRIVATE
30 #include <rump/rumpuser.h>
31
32 __thread struct lwp *curlwp_storage;
33 static void
lwproc_curlwpop(enum rumplwpop op,struct lwp * l)34 lwproc_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
58 static __inline struct lwp * __attribute__((const))
rump_curlwp_fast(void)59 rump_curlwp_fast(void)
60 {
61
62 return curlwp_storage;
63 }
64