1 /* 2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdlib.h> 11 12 #ifndef OPENSSL_ASYNC_H 13 # define OPENSSL_ASYNC_H 14 # pragma once 15 16 # include <openssl/macros.h> 17 # ifndef OPENSSL_NO_DEPRECATED_3_0 18 # define HEADER_ASYNC_H 19 # endif 20 21 #if defined(_WIN32) 22 # if defined(BASETYPES) || defined(_WINDEF_H) 23 /* application has to include <windows.h> to use this */ 24 #define OSSL_ASYNC_FD HANDLE 25 #define OSSL_BAD_ASYNC_FD INVALID_HANDLE_VALUE 26 # endif 27 #else 28 #define OSSL_ASYNC_FD int 29 #define OSSL_BAD_ASYNC_FD -1 30 #endif 31 # include <openssl/asyncerr.h> 32 33 34 # ifdef __cplusplus 35 extern "C" { 36 # endif 37 38 typedef struct async_job_st ASYNC_JOB; 39 typedef struct async_wait_ctx_st ASYNC_WAIT_CTX; 40 typedef int (*ASYNC_callback_fn)(void *arg); 41 42 #define ASYNC_ERR 0 43 #define ASYNC_NO_JOBS 1 44 #define ASYNC_PAUSE 2 45 #define ASYNC_FINISH 3 46 47 #define ASYNC_STATUS_UNSUPPORTED 0 48 #define ASYNC_STATUS_ERR 1 49 #define ASYNC_STATUS_OK 2 50 #define ASYNC_STATUS_EAGAIN 3 51 52 int ASYNC_init_thread(size_t max_size, size_t init_size); 53 void ASYNC_cleanup_thread(void); 54 55 #ifdef OSSL_ASYNC_FD 56 ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void); 57 void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx); 58 int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX *ctx, const void *key, 59 OSSL_ASYNC_FD fd, 60 void *custom_data, 61 void (*cleanup)(ASYNC_WAIT_CTX *, const void *, 62 OSSL_ASYNC_FD, void *)); 63 int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX *ctx, const void *key, 64 OSSL_ASYNC_FD *fd, void **custom_data); 65 int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *fd, 66 size_t *numfds); 67 int ASYNC_WAIT_CTX_get_callback(ASYNC_WAIT_CTX *ctx, 68 ASYNC_callback_fn *callback, 69 void **callback_arg); 70 int ASYNC_WAIT_CTX_set_callback(ASYNC_WAIT_CTX *ctx, 71 ASYNC_callback_fn callback, 72 void *callback_arg); 73 int ASYNC_WAIT_CTX_set_status(ASYNC_WAIT_CTX *ctx, int status); 74 int ASYNC_WAIT_CTX_get_status(ASYNC_WAIT_CTX *ctx); 75 int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *addfd, 76 size_t *numaddfds, OSSL_ASYNC_FD *delfd, 77 size_t *numdelfds); 78 int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX *ctx, const void *key); 79 #endif 80 81 int ASYNC_is_capable(void); 82 83 int ASYNC_start_job(ASYNC_JOB **job, ASYNC_WAIT_CTX *ctx, int *ret, 84 int (*func)(void *), void *args, size_t size); 85 int ASYNC_pause_job(void); 86 87 ASYNC_JOB *ASYNC_get_current_job(void); 88 ASYNC_WAIT_CTX *ASYNC_get_wait_ctx(ASYNC_JOB *job); 89 void ASYNC_block_pause(void); 90 void ASYNC_unblock_pause(void); 91 92 93 # ifdef __cplusplus 94 } 95 # endif 96 #endif 97