BadVPN – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 1 /**
2 * @file BReactor_emscripten.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  
30 #include <stdio.h>
31 #include <inttypes.h>
32  
33 #include <emscripten/emscripten.h>
34  
35 #include "BReactor_emscripten.h"
36  
37 #include <misc/debug.h>
38  
39 #include <generated/blog_channel_BReactor.h>
40  
41 static void assert_timer (BTimer *bt, BReactor *reactor)
42 {
43 ASSERT(bt->active == 0 || bt->active == 1);
44 ASSERT(bt->active == 0 || bt->reactor);
45 ASSERT(bt->active == 0 || (!reactor || bt->reactor == reactor));
46 }
47  
48 static void dispatch_pending (BReactor *o)
49 {
50 while (BPendingGroup_HasJobs(&o->pending_jobs)) {
51 BPendingGroup_ExecuteJob(&o->pending_jobs);
52 }
53 }
54  
55 __attribute__((used))
56 void breactor_timer_cb (BReactor *reactor, BTimer *bt)
57 {
58 assert_timer(bt, reactor);
59 ASSERT(bt->active);
60 ASSERT(!BPendingGroup_HasJobs(&reactor->pending_jobs));
61  
62 bt->active = 0;
63  
64 bt->handler(bt->handler_pointer);
65 dispatch_pending(reactor);
66 }
67  
68 static void small_timer_handler (void *vbt)
69 {
70 BSmallTimer *bt = vbt;
71  
72 bt->handler(bt);
73 }
74  
75 void BTimer_Init (BTimer *bt, btime_t msTime, BTimer_handler handler, void *user)
76 {
77 bt->msTime = msTime;
78 bt->handler = handler;
79 bt->handler_pointer = user;
80 bt->active = 0;
81 }
82  
83 int BTimer_IsRunning (BTimer *bt)
84 {
85 assert_timer(bt, NULL);
86  
87 return bt->active;
88 }
89  
90 void BSmallTimer_Init (BSmallTimer *bt, BSmallTimer_handler handler)
91 {
92 BTimer_Init(&bt->timer, 0, small_timer_handler, bt);
93 bt->handler = handler;
94 }
95  
96 int BSmallTimer_IsRunning (BSmallTimer *bt)
97 {
98 return BTimer_IsRunning(&bt->timer);
99 }
100  
101 void BReactor_EmscriptenInit (BReactor *bsys)
102 {
103 BPendingGroup_Init(&bsys->pending_jobs);
104  
105 DebugObject_Init(&bsys->d_obj);
106 }
107  
108 void BReactor_EmscriptenFree (BReactor *bsys)
109 {
110 DebugObject_Free(&bsys->d_obj);
111 ASSERT(!BPendingGroup_HasJobs(&bsys->pending_jobs));
112 }
113  
114 void BReactor_EmscriptenSync (BReactor *bsys)
115 {
116 DebugObject_Access(&bsys->d_obj);
117  
118 dispatch_pending(bsys);
119 }
120  
121 BPendingGroup * BReactor_PendingGroup (BReactor *bsys)
122 {
123 DebugObject_Access(&bsys->d_obj);
124  
125 return &bsys->pending_jobs;
126 }
127  
128 void BReactor_SetTimer (BReactor *bsys, BTimer *bt)
129 {
130 BReactor_SetTimerAfter(bsys, bt, bt->msTime);
131 }
132  
133 void BReactor_SetTimerAfter (BReactor *bsys, BTimer *bt, btime_t after)
134 {
135 DebugObject_Access(&bsys->d_obj);
136 assert_timer(bt, bsys);
137  
138 if (bt->active) {
139 BReactor_RemoveTimer(bsys, bt);
140 }
141  
142 char cmd[120];
143 sprintf(cmd, "setTimeout(function(){Module.ccall('breactor_timer_cb','null',['number','number'],[%d,%d]);},%"PRIi64")", (int)bsys, (int)bt, after);
144  
145 bt->active = 1;
146 bt->timerid = emscripten_run_script_int(cmd);
147 bt->reactor = bsys;
148 }
149  
150 void BReactor_RemoveTimer (BReactor *bsys, BTimer *bt)
151 {
152 DebugObject_Access(&bsys->d_obj);
153 assert_timer(bt, bsys);
154  
155 if (!bt->active) {
156 return;
157 }
158  
159 char cmd[30];
160 sprintf(cmd, "clearTimeout(%d)", bt->timerid);
161  
162 emscripten_run_script(cmd);
163 bt->active = 0;
164 }
165  
166 void BReactor_SetSmallTimer (BReactor *bsys, BSmallTimer *bt, int mode, btime_t time)
167 {
168 ASSERT(mode == BTIMER_SET_RELATIVE)
169  
170 BReactor_SetTimerAfter(bsys, &bt->timer, time);
171 }
172  
173 void BReactor_RemoveSmallTimer (BReactor *bsys, BSmallTimer *bt)
174 {
175 BReactor_RemoveTimer(bsys, &bt->timer);
176 }