e8dfb5bf8e
There are potential deadlock situations that can occur if code executing within the context of a job aquires a lock, and then pauses the job. This adds an ability to temporarily block pauses from occuring whilst performing work and holding a lock. Reviewed-by: Rich Salz <rsalz@openssl.org>
93 lines
3.4 KiB
C
93 lines
3.4 KiB
C
/* crypto/async/async_locl.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/async.h>
|
|
#include <openssl/crypto.h>
|
|
|
|
typedef struct async_ctx_st async_ctx;
|
|
|
|
#include "arch/async_win.h"
|
|
#include "arch/async_posix.h"
|
|
#include "arch/async_null.h"
|
|
|
|
struct async_ctx_st {
|
|
async_fibre dispatcher;
|
|
ASYNC_JOB *currjob;
|
|
unsigned int blocked;
|
|
};
|
|
|
|
struct async_job_st {
|
|
async_fibre fibrectx;
|
|
int (*func) (void *);
|
|
void *funcargs;
|
|
int ret;
|
|
int status;
|
|
int wake_set;
|
|
int wait_fd;
|
|
int wake_fd;
|
|
};
|
|
|
|
DECLARE_STACK_OF(ASYNC_JOB)
|
|
|
|
void async_start_func(void);
|
|
STACK_OF(ASYNC_JOB) *async_get_pool(void);
|
|
int async_set_pool(STACK_OF(ASYNC_JOB) *poolin, size_t curr_size,
|
|
size_t max_size);
|
|
void async_increment_pool_size(void);
|
|
void async_release_job_to_pool(ASYNC_JOB *job);
|
|
size_t async_pool_max_size(void);
|
|
void async_release_pool(void);
|
|
int async_pool_can_grow(void);
|
|
int async_pipe(int *pipefds);
|
|
int async_write1(int fd, const void *buf);
|
|
int async_read1(int fd, void *buf);
|