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50108304 MC |
1 | /* |
2 | * Written by Matt Caswell (matt@openssl.org) for the OpenSSL project. | |
3 | */ | |
4 | /* ==================================================================== | |
5 | * Copyright (c) 2015 The OpenSSL Project. All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * | |
19 | * 3. All advertising materials mentioning features or use of this | |
20 | * software must display the following acknowledgment: | |
21 | * "This product includes software developed by the OpenSSL Project | |
22 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
23 | * | |
24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
25 | * endorse or promote products derived from this software without | |
26 | * prior written permission. For written permission, please contact | |
27 | * licensing@OpenSSL.org. | |
28 | * | |
29 | * 5. Products derived from this software may not be called "OpenSSL" | |
30 | * nor may "OpenSSL" appear in their names without prior written | |
31 | * permission of the OpenSSL Project. | |
32 | * | |
33 | * 6. Redistributions of any form whatsoever must retain the following | |
34 | * acknowledgment: | |
35 | * "This product includes software developed by the OpenSSL Project | |
36 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
37 | * | |
38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
49 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
50 | * ==================================================================== | |
51 | */ | |
6e8ac508 VD |
52 | #ifndef OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H |
53 | #define OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H | |
50108304 MC |
54 | #include <openssl/e_os2.h> |
55 | ||
8d35ceb9 | 56 | #if (defined(OPENSSL_SYS_UNIX) || defined(OPENSSL_SYS_CYGWIN)) && defined(OPENSSL_THREADS) |
50108304 MC |
57 | |
58 | # include <unistd.h> | |
59 | ||
60 | # if _POSIX_VERSION >= 200112L | |
61 | ||
68487a9b MC |
62 | # include <pthread.h> |
63 | ||
636ca4ff | 64 | # define ASYNC_POSIX |
50108304 MC |
65 | # define ASYNC_ARCH |
66 | ||
67 | # include <ucontext.h> | |
7070e5ca MC |
68 | # include <setjmp.h> |
69 | # include "e_os.h" | |
50108304 | 70 | |
68487a9b MC |
71 | extern pthread_key_t posixctx; |
72 | extern pthread_key_t posixpool; | |
50108304 MC |
73 | |
74 | typedef struct async_fibre_st { | |
75 | ucontext_t fibre; | |
7070e5ca MC |
76 | jmp_buf env; |
77 | int env_init; | |
636ca4ff | 78 | } async_fibre; |
50108304 | 79 | |
68487a9b MC |
80 | # define async_set_ctx(nctx) (pthread_setspecific(posixctx , (nctx)) == 0) |
81 | # define async_get_ctx() ((async_ctx *)pthread_getspecific(posixctx)) | |
82 | # define async_set_pool(p) (pthread_setspecific(posixpool , (p)) == 0) | |
83 | # define async_get_pool() ((async_pool *)pthread_getspecific(posixpool)) | |
7070e5ca | 84 | |
636ca4ff | 85 | static inline int async_fibre_swapcontext(async_fibre *o, async_fibre *n, int r) |
7070e5ca MC |
86 | { |
87 | o->env_init = 1; | |
88 | ||
06b9ff06 | 89 | if (!r || !_setjmp(o->env)) { |
7070e5ca | 90 | if (n->env_init) |
06b9ff06 | 91 | _longjmp(n->env, 1); |
7070e5ca MC |
92 | else |
93 | setcontext(&n->fibre); | |
94 | } | |
95 | ||
96 | return 1; | |
97 | } | |
98 | ||
636ca4ff | 99 | # define async_fibre_init_dispatcher(d) |
50108304 | 100 | |
6e8ac508 | 101 | int async_fibre_makecontext(async_fibre *fibre); |
636ca4ff | 102 | void async_fibre_free(async_fibre *fibre); |
50108304 MC |
103 | |
104 | # endif | |
105 | #endif | |
6e8ac508 | 106 | #endif /* OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H */ |