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      1 /*
      2  * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the OpenSSL license (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 HEADER_ASYNC_H
     13 # define HEADER_ASYNC_H
     14 
     15 #if defined(_WIN32)
     16 # if defined(BASETYPES) || defined(_WINDEF_H)
     17 /* application has to include <windows.h> to use this */
     18 #define OSSL_ASYNC_FD       HANDLE
     19 #define OSSL_BAD_ASYNC_FD   INVALID_HANDLE_VALUE
     20 # endif
     21 #else
     22 #define OSSL_ASYNC_FD       int
     23 #define OSSL_BAD_ASYNC_FD   -1
     24 #endif
     25 # include <openssl/asyncerr.h>
     26 
     27 
     28 # ifdef  __cplusplus
     29 extern "C" {
     30 # endif
     31 
     32 typedef struct async_job_st ASYNC_JOB;
     33 typedef struct async_wait_ctx_st ASYNC_WAIT_CTX;
     34 
     35 #define ASYNC_ERR      0
     36 #define ASYNC_NO_JOBS  1
     37 #define ASYNC_PAUSE    2
     38 #define ASYNC_FINISH   3
     39 
     40 int ASYNC_init_thread(size_t max_size, size_t init_size);
     41 void ASYNC_cleanup_thread(void);
     42 
     43 #ifdef OSSL_ASYNC_FD
     44 ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void);
     45 void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx);
     46 int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX *ctx, const void *key,
     47                                OSSL_ASYNC_FD fd,
     48                                void *custom_data,
     49                                void (*cleanup)(ASYNC_WAIT_CTX *, const void *,
     50                                                OSSL_ASYNC_FD, void *));
     51 int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX *ctx, const void *key,
     52                         OSSL_ASYNC_FD *fd, void **custom_data);
     53 int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *fd,
     54                                size_t *numfds);
     55 int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *addfd,
     56                                    size_t *numaddfds, OSSL_ASYNC_FD *delfd,
     57                                    size_t *numdelfds);
     58 int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX *ctx, const void *key);
     59 #endif
     60 
     61 int ASYNC_is_capable(void);
     62 
     63 int ASYNC_start_job(ASYNC_JOB **job, ASYNC_WAIT_CTX *ctx, int *ret,
     64                     int (*func)(void *), void *args, size_t size);
     65 int ASYNC_pause_job(void);
     66 
     67 ASYNC_JOB *ASYNC_get_current_job(void);
     68 ASYNC_WAIT_CTX *ASYNC_get_wait_ctx(ASYNC_JOB *job);
     69 void ASYNC_block_pause(void);
     70 void ASYNC_unblock_pause(void);
     71 
     72 
     73 # ifdef  __cplusplus
     74 }
     75 # endif
     76 #endif
     77