/*

 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <stdlib.h>

#ifndef OPENSSL_ASYNC_H

# define OPENSSL_ASYNC_H

# pragma once

# include <openssl/macros.h>

# ifndef OPENSSL_NO_DEPRECATED_3_0

#  define HEADER_ASYNC_H

# endif

#if defined(_WIN32)

# if defined(BASETYPES) || defined(_WINDEF_H)

/* application has to include <windows.h> to use this */

#define OSSL_ASYNC_FD       HANDLE

#define OSSL_BAD_ASYNC_FD   INVALID_HANDLE_VALUE

# endif

#else

#define OSSL_ASYNC_FD       int

#define OSSL_BAD_ASYNC_FD   -1

#endif

# include <openssl/asyncerr.h>

# ifdef  __cplusplus

extern "C" {

# endif

typedef struct async_job_st ASYNC_JOB;

typedef struct async_wait_ctx_st ASYNC_WAIT_CTX;

typedef int (*ASYNC_callback_fn)(void *arg);

#define ASYNC_ERR      0

#define ASYNC_NO_JOBS  1

#define ASYNC_PAUSE    2

#define ASYNC_FINISH   3

#define ASYNC_STATUS_UNSUPPORTED    0

#define ASYNC_STATUS_ERR            1

#define ASYNC_STATUS_OK             2

#define ASYNC_STATUS_EAGAIN         3

int ASYNC_init_thread(size_t max_size, size_t init_size);

void ASYNC_cleanup_thread(void);

#ifdef OSSL_ASYNC_FD

ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void);

void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx);

int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX *ctx, const void *key,

                               OSSL_ASYNC_FD fd,

                               void *custom_data,

                               void (*cleanup)(ASYNC_WAIT_CTX *, const void *,

                                               OSSL_ASYNC_FD, void *));

int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX *ctx, const void *key,

                        OSSL_ASYNC_FD *fd, void **custom_data);

int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *fd,

                               size_t *numfds);

int ASYNC_WAIT_CTX_get_callback(ASYNC_WAIT_CTX *ctx,

                                ASYNC_callback_fn *callback,

                                void **callback_arg);

int ASYNC_WAIT_CTX_set_callback(ASYNC_WAIT_CTX *ctx,

                                ASYNC_callback_fn callback,

                                void *callback_arg);

int ASYNC_WAIT_CTX_set_status(ASYNC_WAIT_CTX *ctx, int status);

int ASYNC_WAIT_CTX_get_status(ASYNC_WAIT_CTX *ctx);

int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *addfd,

                                   size_t *numaddfds, OSSL_ASYNC_FD *delfd,

                                   size_t *numdelfds);

int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX *ctx, const void *key);

#endif

int ASYNC_is_capable(void);

int ASYNC_start_job(ASYNC_JOB **job, ASYNC_WAIT_CTX *ctx, int *ret,

                    int (*func)(void *), void *args, size_t size);

int ASYNC_pause_job(void);

ASYNC_JOB *ASYNC_get_current_job(void);

ASYNC_WAIT_CTX *ASYNC_get_wait_ctx(ASYNC_JOB *job);

void ASYNC_block_pause(void);

void ASYNC_unblock_pause(void);

# ifdef  __cplusplus

}

# endif

#endif