1/*
2 * Copyright 2015-2020 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/*
11 * Must do this before including any header files, because on MacOS/X <stlib.h>
12 * includes <signal.h> which includes <ucontext.h>
13 */
14#if defined(__APPLE__) && defined(__MACH__) && !defined(_XOPEN_SOURCE)
15# define _XOPEN_SOURCE          /* Otherwise incomplete ucontext_t structure */
16# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
17#endif
18
19#if defined(_WIN32)
20# include <windows.h>
21#endif
22
23#include "crypto/async.h"
24#include <openssl/crypto.h>
25
26typedef struct async_ctx_st async_ctx;
27typedef struct async_pool_st async_pool;
28
29#include "arch/async_win.h"
30#include "arch/async_posix.h"
31#include "arch/async_null.h"
32
33struct async_ctx_st {
34    async_fibre dispatcher;
35    ASYNC_JOB *currjob;
36    unsigned int blocked;
37};
38
39struct async_job_st {
40    async_fibre fibrectx;
41    int (*func) (void *);
42    void *funcargs;
43    int ret;
44    int status;
45    ASYNC_WAIT_CTX *waitctx;
46    OSSL_LIB_CTX *libctx;
47};
48
49struct fd_lookup_st {
50    const void *key;
51    OSSL_ASYNC_FD fd;
52    void *custom_data;
53    void (*cleanup)(ASYNC_WAIT_CTX *, const void *, OSSL_ASYNC_FD, void *);
54    int add;
55    int del;
56    struct fd_lookup_st *next;
57};
58
59struct async_wait_ctx_st {
60    struct fd_lookup_st *fds;
61    size_t numadd;
62    size_t numdel;
63    ASYNC_callback_fn callback;
64    void *callback_arg;
65    int status;
66};
67
68DEFINE_STACK_OF(ASYNC_JOB)
69
70struct async_pool_st {
71    STACK_OF(ASYNC_JOB) *jobs;
72    size_t curr_size;
73    size_t max_size;
74};
75
76void async_local_cleanup(void);
77void async_start_func(void);
78async_ctx *async_get_ctx(void);
79
80void async_wait_ctx_reset_counts(ASYNC_WAIT_CTX *ctx);
81
82