libwebsockets
Lightweight C library for HTML5 websockets
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lws-state.h
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1 /*
2 * libwebsockets - small server side websockets and web server implementation
3 *
4 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 */
24
25struct lws_state_notify_link;
26struct lws_state_manager;
27
28#if defined(LWS_WITH_SYS_STATE)
29
30typedef int (*lws_state_notify_t)(struct lws_state_manager *mgr,
31 struct lws_state_notify_link *link,
32 int current, int target);
33
34typedef struct lws_state_notify_link {
35 lws_dll2_t list;
36 lws_state_notify_t notify_cb;
37 const char *name;
38} lws_state_notify_link_t;
39
40typedef struct lws_state_manager {
41 lws_dll2_owner_t notify_list;
42 struct lws_context *context;
43 void *parent;
44#if defined(LWS_WITH_SYS_SMD)
45 lws_smd_class_t smd_class;
46#endif
49 const char **state_names;
50 const char *name;
51 int state;
52} lws_state_manager_t;
53
64
66lws_state_reg_notifier(lws_state_manager_t *mgr, lws_state_notify_link_t *nl);
67
75
77lws_state_reg_deregister(lws_state_notify_link_t *nl);
78
88
90lws_state_reg_notifier_list(lws_state_manager_t *mgr,
91 lws_state_notify_link_t * const *nl);
92
104lws_state_transition_steps(lws_state_manager_t *mgr, int target);
105
115lws_state_transition(lws_state_manager_t *mgr, int target);
116
117#else
118
119#endif
struct lws_dll2 lws_dll2_t
struct lws_dll2_owner lws_dll2_owner_t
#define LWS_EXTERN
#define LWS_VISIBLE
uint32_t lws_smd_class_t
Definition lws-smd.h:31