1 /* crypto/async/arch/async_posix.h */
3 * Written by Matt Caswell (matt@openssl.org) for the OpenSSL project.
5 /* ====================================================================
6 * Copyright (c) 2015 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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51 * ====================================================================
53 #include <openssl/e_os2.h>
55 #if defined(OPENSSL_SYS_UNIX) && defined(OPENSSL_THREADS)
59 # if _POSIX_VERSION >= 200112L
67 * Some platforms complain (e.g. OS-X) that setcontext/getcontext/makecontext
68 * are deprecated without the following defined. We know its deprecated but
69 * there is no alternative.
71 # define _XOPEN_SOURCE
72 # pragma GCC diagnostic ignored "-Wdeprecated-declarations"
74 # include <ucontext.h>
78 extern pthread_key_t posixctx;
79 extern pthread_key_t posixpool;
81 typedef struct async_fibre_st {
87 # define async_set_ctx(nctx) (pthread_setspecific(posixctx , (nctx)) == 0)
88 # define async_get_ctx() ((async_ctx *)pthread_getspecific(posixctx))
89 # define async_set_pool(p) (pthread_setspecific(posixpool , (p)) == 0)
90 # define async_get_pool() ((async_pool *)pthread_getspecific(posixpool))
92 static inline int async_fibre_swapcontext(async_fibre *o, async_fibre *n, int r)
96 if (!r || !_setjmp(o->env)) {
100 setcontext(&n->fibre);
106 # define async_fibre_makecontext(c) \
107 (!getcontext(&(c)->fibre) \
108 && async_fibre_init(c) \
109 && (makecontext(&(c)->fibre, async_start_func, 0), 1))
110 # define async_fibre_init_dispatcher(d)
112 int async_fibre_init(async_fibre *fibre);
113 void async_fibre_free(async_fibre *fibre);