BadVPN – Blame information for rev 1
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
1 | office | 1 | /** |
2 | * @file timer.c |
||
3 | * @author Ambroz Bizjak <ambrop7@gmail.com> |
||
4 | * |
||
5 | * @section LICENSE |
||
6 | * |
||
7 | * Redistribution and use in source and binary forms, with or without |
||
8 | * modification, are permitted provided that the following conditions are met: |
||
9 | * 1. Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * 2. Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
13 | * documentation and/or other materials provided with the distribution. |
||
14 | * 3. Neither the name of the author nor the |
||
15 | * names of its contributors may be used to endorse or promote products |
||
16 | * derived from this software without specific prior written permission. |
||
17 | * |
||
18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
||
19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
||
20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
||
21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
||
22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
||
23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
||
24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
||
25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
||
27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
28 | * |
||
29 | * @section DESCRIPTION |
||
30 | * |
||
31 | * Synopsis: |
||
32 | * periodic_timer(string down_time, string up_time) |
||
33 | * |
||
34 | * Description: |
||
35 | * Periodically goes up and down. Starting in the down state, waits 'down_time' |
||
36 | * milliseconds. Then it goes up, and after 'up_time' milliseconds, goes back down, |
||
37 | * and the process repeats. When requested to terminate, terminates immedietely. |
||
38 | */ |
||
39 | |||
40 | #include <stddef.h> |
||
41 | |||
42 | #include <misc/debug.h> |
||
43 | |||
44 | #include <ncd/module_common.h> |
||
45 | |||
46 | #include <generated/blog_channel_ncd_timer.h> |
||
47 | |||
48 | #define STATE_DOWN 1 |
||
49 | #define STATE_UP 2 |
||
50 | |||
51 | struct instance { |
||
52 | NCDModuleInst *i; |
||
53 | btime_t down_time; |
||
54 | btime_t up_time; |
||
55 | BTimer timer; |
||
56 | int state; |
||
57 | }; |
||
58 | |||
59 | static void timer_handler (void *vo) |
||
60 | { |
||
61 | struct instance *o = vo; |
||
62 | |||
63 | switch (o->state) { |
||
64 | case STATE_DOWN: { |
||
65 | o->state = STATE_UP; |
||
66 | BReactor_SetTimerAfter(o->i->params->iparams->reactor, &o->timer, o->up_time); |
||
67 | NCDModuleInst_Backend_Up(o->i); |
||
68 | } break; |
||
69 | |||
70 | case STATE_UP: { |
||
71 | o->state = STATE_DOWN; |
||
72 | BReactor_SetTimerAfter(o->i->params->iparams->reactor, &o->timer, o->down_time); |
||
73 | NCDModuleInst_Backend_Down(o->i); |
||
74 | } break; |
||
75 | |||
76 | default: ASSERT(0); |
||
77 | } |
||
78 | } |
||
79 | |||
80 | static void func_new (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params) |
||
81 | { |
||
82 | struct instance *o = vo; |
||
83 | o->i = i; |
||
84 | |||
85 | // check arguments |
||
86 | NCDValRef down_time_arg; |
||
87 | NCDValRef up_time_arg; |
||
88 | if (!NCDVal_ListRead(params->args, 2, &down_time_arg, &up_time_arg)) { |
||
89 | ModuleLog(o->i, BLOG_ERROR, "wrong arity"); |
||
90 | goto fail0; |
||
91 | } |
||
92 | |||
93 | // read times |
||
94 | if (!ncd_read_time(down_time_arg, &o->down_time)) { |
||
95 | ModuleLog(o->i, BLOG_ERROR, "wrong down time"); |
||
96 | goto fail0; |
||
97 | } |
||
98 | if (!ncd_read_time(up_time_arg, &o->up_time)) { |
||
99 | ModuleLog(o->i, BLOG_ERROR, "wrong up time"); |
||
100 | goto fail0; |
||
101 | } |
||
102 | |||
103 | // init timer |
||
104 | BTimer_Init(&o->timer, 0, timer_handler, o); |
||
105 | |||
106 | // set state down |
||
107 | o->state = STATE_DOWN; |
||
108 | |||
109 | // set timer |
||
110 | BReactor_SetTimerAfter(o->i->params->iparams->reactor, &o->timer, o->down_time); |
||
111 | return; |
||
112 | |||
113 | fail0: |
||
114 | NCDModuleInst_Backend_DeadError(i); |
||
115 | } |
||
116 | |||
117 | static void func_die (void *vo) |
||
118 | { |
||
119 | struct instance *o = vo; |
||
120 | |||
121 | // free timer |
||
122 | BReactor_RemoveTimer(o->i->params->iparams->reactor, &o->timer); |
||
123 | |||
124 | NCDModuleInst_Backend_Dead(o->i); |
||
125 | } |
||
126 | |||
127 | static struct NCDModule modules[] = { |
||
128 | { |
||
129 | .type = "periodic_timer", |
||
130 | .func_new2 = func_new, |
||
131 | .func_die = func_die, |
||
132 | .alloc_size = sizeof(struct instance) |
||
133 | }, { |
||
134 | .type = NULL |
||
135 | } |
||
136 | }; |
||
137 | |||
138 | const struct NCDModuleGroup ncdmodule_timer = { |
||
139 | .modules = modules |
||
140 | }; |