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/* crypto/async/arch/async_posix.c */
/*
* 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 "../async_locl.h"
#include <openssl/async.h>
#ifdef ASYNC_POSIX
# include <stddef.h>
# include <ucontext.h>
# include <unistd.h>
# include <openssl/crypto.h>
# include <openssl/async.h>
__thread async_ctx *sysvctx;
#define STACKSIZE 32768
extern __thread size_t posixpool_max_size;
extern __thread size_t posixpool_curr_size;
extern __thread STACK_OF(ASYNC_JOB) *posixpool;
__thread size_t posixpool_max_size = 0;
__thread size_t posixpool_curr_size = 0;
__thread STACK_OF(ASYNC_JOB) *posixpool = NULL;
int async_fibre_init(async_fibre *fibre)
{
void *stack = NULL;
if (!(stack = OPENSSL_malloc(STACKSIZE))) {
return 0;
}
fibre->fibre.uc_stack.ss_sp = stack;
fibre->fibre.uc_stack.ss_size = STACKSIZE;
fibre->fibre.uc_link = NULL;
fibre->env_init = 0;
return 1;
}
void async_fibre_free(async_fibre *fibre)
{
if (fibre->fibre.uc_stack.ss_sp)
OPENSSL_free(fibre->fibre.uc_stack.ss_sp);
}
int async_pipe(int *pipefds)
{
if (pipe(pipefds) == 0)
return 1;
return 0;
}
int async_write1(int fd, const void *buf)
{
if (write(fd, buf, 1) > 0)
return 1;
return 0;
}
int async_read1(int fd, void *buf)
{
if (read(fd, buf, 1) > 0)
return 1;
return 0;
}
STACK_OF(ASYNC_JOB) *async_get_pool(void)
{
return posixpool;
}
int async_set_pool(STACK_OF(ASYNC_JOB) *poolin, size_t curr_size,
size_t max_size)
{
posixpool = poolin;
posixpool_curr_size = curr_size;
posixpool_max_size = max_size;
return 1;
}
void async_increment_pool_size(void)
{
posixpool_curr_size++;
}
void async_release_job_to_pool(ASYNC_JOB *job)
{
sk_ASYNC_JOB_push(posixpool, job);
}
size_t async_pool_max_size(void)
{
return posixpool_max_size;
}
void async_release_pool(void)
{
sk_ASYNC_JOB_free(posixpool);
posixpool = NULL;
}
int async_pool_can_grow(void)
{
return (posixpool_max_size == 0)
|| (posixpool_curr_size < posixpool_max_size);
}
#endif
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