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/* crypto/async/arch/async_posix.h */
/*
* Written by Matt Caswell (matt@openssl.org) for the OpenSSL project.
*/
/* ====================================================================
* Copyright (c) 2015 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*/
#include <openssl/e_os2.h>
#ifdef OPENSSL_SYS_UNIX
# include <unistd.h>
# if _POSIX_VERSION >= 200112L
# define ASYNC_POSIX
# define ASYNC_ARCH
/*
* Some platforms complain (e.g. OS-X) that setcontext/getcontext/makecontext
* are deprecated without the following defined. We know its deprecated but
* there is no alternative.
*/
# define _XOPEN_SOURCE
# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
# include <ucontext.h>
# include <setjmp.h>
# include "e_os.h"
extern __thread async_ctx *sysvctx;
typedef struct async_fibre_st {
ucontext_t fibre;
jmp_buf env;
int env_init;
} async_fibre;
# define async_set_ctx(nctx) (sysvctx = (nctx))
# define async_get_ctx() (sysvctx)
static inline int async_fibre_swapcontext(async_fibre *o, async_fibre *n, int r)
{
o->env_init = 1;
if (!r || !_setjmp(o->env)) {
if (n->env_init)
_longjmp(n->env, 1);
else
setcontext(&n->fibre);
}
return 1;
}
# define async_fibre_makecontext(c) \
(!getcontext(&(c)->fibre) \
&& async_fibre_init(c) \
&& (makecontext(&(c)->fibre, async_start_func, 0), 1))
# define async_fibre_init_dispatcher(d)
int async_fibre_init(async_fibre *fibre);
void async_fibre_free(async_fibre *fibre);
# endif
#endif
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