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33 | #include <stdlib.h> |
33 | #include <stdlib.h> |
34 | #include <sys/time.h> |
34 | #include <sys/time.h> |
35 | |
35 | |
36 | #include "event.h" |
36 | #include "event.h" |
37 | |
37 | |
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38 | #if EV_MULTIPLICITY |
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39 | # define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base |
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40 | # define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base |
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41 | #else |
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42 | # define dLOOPev |
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43 | # define dLOOPbase |
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44 | #endif |
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45 | |
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46 | /* never accessed, will always be cast from/to ev_loop */ |
38 | struct event_base |
47 | struct event_base |
39 | { |
48 | { |
40 | int dummy; |
49 | int dummy; |
41 | }; |
50 | }; |
42 | |
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43 | static int x_actives; |
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44 | |
51 | |
45 | static struct event_base x_base, *x_cur; |
52 | static struct event_base x_base, *x_cur; |
46 | |
53 | |
47 | static void |
54 | static void |
48 | tv_set (struct timeval *tv, ev_tstamp at) |
55 | tv_set (struct timeval *tv, ev_tstamp at) |
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72 | return "libev"; |
79 | return "libev"; |
73 | } |
80 | } |
74 | |
81 | |
75 | void *event_init (void) |
82 | void *event_init (void) |
76 | { |
83 | { |
77 | if (ev_init (0)) |
84 | #if EV_MULTIPLICITY |
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85 | x_cur = (struct event_base *)ev_loop_new (EVMETHOD_AUTO); |
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86 | #else |
78 | return x_cur = &x_base; |
87 | x_cur = &x_base; |
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88 | #endif |
79 | |
89 | |
80 | return 0; |
90 | return x_cur; |
81 | } |
91 | } |
82 | |
92 | |
83 | void event_base_free (struct event_base *base) |
93 | void event_base_free (struct event_base *base) |
84 | { |
94 | { |
85 | /* nop */ |
95 | dLOOPbase; |
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96 | |
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97 | #if EV_MULTIPLICITY |
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98 | ev_loop_delete (loop); |
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99 | #endif |
86 | } |
100 | } |
87 | |
101 | |
88 | int event_dispatch (void) |
102 | int event_dispatch (void) |
89 | { |
103 | { |
90 | return event_base_dispatch (x_cur); |
104 | return event_base_dispatch (x_cur); |
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108 | } |
122 | } |
109 | |
123 | |
110 | static void |
124 | static void |
111 | x_cb (struct event *ev, int revents) |
125 | x_cb (struct event *ev, int revents) |
112 | { |
126 | { |
113 | if (ev->ev_events & EV_SIGNAL) |
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114 | { |
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115 | /* sig */ |
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116 | if (ev_is_active (&ev->iosig.sig)) |
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117 | { |
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118 | ev_signal_stop (&ev->iosig.sig); |
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119 | --x_actives; |
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120 | } |
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121 | } |
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122 | else |
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123 | { |
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124 | /* io */ |
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125 | if (!(ev->ev_events & EV_PERSIST) && ev_is_active (&ev->iosig.io)) |
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126 | { |
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127 | ev_io_stop (&ev->iosig.io); |
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128 | --x_actives; |
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129 | } |
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130 | } |
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131 | |
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132 | revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL; |
127 | revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL; |
133 | |
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134 | if (revents & EV_TIMEOUT) |
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135 | --x_actives; |
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136 | |
128 | |
137 | ev->ev_res = revents; |
129 | ev->ev_res = revents; |
138 | ev->ev_callback (ev->ev_fd, revents, ev->ev_arg); |
130 | ev->ev_callback (ev->ev_fd, revents, ev->ev_arg); |
139 | } |
131 | } |
140 | |
132 | |
141 | static void |
133 | static void |
142 | x_cb_io (struct ev_io *w, int revents) |
134 | x_cb_sig (EV_P_ struct ev_signal *w, int revents) |
143 | { |
135 | { |
144 | x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.io)), revents); |
136 | x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents); |
145 | } |
137 | } |
146 | |
138 | |
147 | static void |
139 | static void |
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140 | x_cb_io (EV_P_ struct ev_io *w, int revents) |
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141 | { |
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142 | struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io)); |
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143 | |
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144 | if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w)) |
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145 | ev_io_stop (EV_A_ w); |
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146 | |
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147 | x_cb (ev, revents); |
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148 | } |
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149 | |
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150 | static void |
148 | x_cb_to (struct ev_timer *w, int revents) |
151 | x_cb_to (EV_P_ struct ev_timer *w, int revents) |
149 | { |
152 | { |
150 | x_cb ((struct event *)(((char *)w) - offsetof (struct event, to)), revents); |
153 | x_cb ((struct event *)(((char *)w) - offsetof (struct event, to)), revents); |
151 | } |
154 | } |
152 | |
155 | |
153 | static void |
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154 | x_cb_sig (struct ev_signal *w, int revents) |
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155 | { |
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156 | x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents); |
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157 | } |
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158 | |
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159 | void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg) |
156 | void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg) |
160 | { |
157 | { |
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158 | if (!ev->initialised) |
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159 | { |
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160 | ev->initialised = 1; |
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161 | |
161 | if (events & EV_SIGNAL) |
162 | if (events & EV_SIGNAL) |
162 | ev_watcher_init (&ev->iosig.sig, x_cb_sig); |
163 | ev_watcher_init (&ev->iosig.sig, x_cb_sig); |
163 | else |
164 | else |
164 | ev_watcher_init (&ev->iosig.io, x_cb_io); |
165 | ev_watcher_init (&ev->iosig.io, x_cb_io); |
165 | |
166 | |
166 | ev_watcher_init (&ev->to, x_cb_to); |
167 | ev_watcher_init (&ev->to, x_cb_to); |
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168 | } |
167 | |
169 | |
168 | ev->ev_base = x_cur; |
170 | ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */ |
169 | ev->ev_fd = fd; |
171 | ev->ev_fd = fd; |
170 | ev->ev_events = events; |
172 | ev->ev_events = events; |
171 | ev->ev_pri = 0; |
173 | ev->ev_pri = 0; |
172 | ev->ev_callback = cb; |
174 | ev->ev_callback = cb; |
173 | ev->ev_arg = arg; |
175 | ev->ev_arg = arg; |
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179 | return event_base_once (x_cur, fd, events, cb, arg, tv); |
181 | return event_base_once (x_cur, fd, events, cb, arg, tv); |
180 | } |
182 | } |
181 | |
183 | |
182 | int event_add (struct event *ev, struct timeval *tv) |
184 | int event_add (struct event *ev, struct timeval *tv) |
183 | { |
185 | { |
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186 | dLOOPev; |
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187 | |
184 | /* disable all watchers */ |
188 | /* disable all watchers */ |
185 | event_del (ev); |
189 | event_del (ev); |
186 | |
190 | |
187 | if (ev->ev_events & EV_SIGNAL) |
191 | if (ev->ev_events & EV_SIGNAL) |
188 | { |
192 | { |
189 | ev_signal_set (&ev->iosig.sig, ev->ev_fd); |
193 | ev_signal_set (&ev->iosig.sig, ev->ev_fd); |
190 | ev_signal_start (&ev->iosig.sig); |
194 | ev_signal_start (EV_A_ &ev->iosig.sig); |
191 | ++x_actives; |
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192 | } |
195 | } |
193 | else if (ev->ev_events & (EV_READ | EV_WRITE)) |
196 | else if (ev->ev_events & (EV_READ | EV_WRITE)) |
194 | { |
197 | { |
195 | ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); |
198 | ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); |
196 | ev_io_start (&ev->iosig.io); |
199 | ev_io_start (EV_A_ &ev->iosig.io); |
197 | ++x_actives; |
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198 | } |
200 | } |
199 | |
201 | |
200 | if (tv) |
202 | if (tv) |
201 | { |
203 | { |
202 | ev_timer_set (&ev->to, tv_get (tv), 0.); |
204 | ev_timer_set (&ev->to, tv_get (tv), 0.); |
203 | ev_timer_start (&ev->to); |
205 | ev_timer_start (EV_A_ &ev->to); |
204 | ++x_actives; |
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205 | } |
206 | } |
206 | |
207 | |
207 | return 0; |
208 | return 0; |
208 | } |
209 | } |
209 | |
210 | |
210 | int event_del (struct event *ev) |
211 | int event_del (struct event *ev) |
211 | { |
212 | { |
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213 | dLOOPev; |
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214 | |
212 | if (ev->ev_events & EV_SIGNAL) |
215 | if (ev->ev_events & EV_SIGNAL) |
213 | { |
216 | { |
214 | /* sig */ |
217 | /* sig */ |
215 | if (ev_is_active (&ev->iosig.sig)) |
218 | if (ev_is_active (&ev->iosig.sig)) |
216 | { |
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217 | ev_signal_stop (&ev->iosig.sig); |
219 | ev_signal_stop (EV_A_ &ev->iosig.sig); |
218 | --x_actives; |
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219 | } |
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220 | } |
220 | } |
221 | else |
221 | else |
222 | { |
222 | { |
223 | /* io */ |
223 | /* io */ |
224 | if (ev_is_active (&ev->iosig.io)) |
224 | if (ev_is_active (&ev->iosig.io)) |
225 | { |
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226 | ev_io_stop (&ev->iosig.io); |
225 | ev_io_stop (EV_A_ &ev->iosig.io); |
227 | --x_actives; |
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228 | } |
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229 | } |
226 | } |
230 | |
227 | |
231 | if (ev_is_active (&ev->to)) |
228 | if (ev_is_active (&ev->to)) |
232 | { |
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233 | ev_timer_stop (&ev->to); |
229 | ev_timer_stop (EV_A_ &ev->to); |
234 | --x_actives; |
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235 | } |
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236 | |
230 | |
237 | return 0; |
231 | return 0; |
238 | } |
232 | } |
239 | |
233 | |
240 | int event_pending (struct event *ev, short events, struct timeval *tv) |
234 | int event_pending (struct event *ev, short events, struct timeval *tv) |
241 | { |
235 | { |
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236 | dLOOPev; |
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237 | |
242 | short revents = 0; |
238 | short revents = 0; |
243 | |
239 | |
244 | if (ev->ev_events & EV_SIGNAL) |
240 | if (ev->ev_events & EV_SIGNAL) |
245 | { |
241 | { |
246 | /* sig */ |
242 | /* sig */ |
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257 | if (ev->to.pending) |
253 | if (ev->to.pending) |
258 | { |
254 | { |
259 | revents |= EV_TIMEOUT; |
255 | revents |= EV_TIMEOUT; |
260 | |
256 | |
261 | if (tv) |
257 | if (tv) |
262 | tv_set (tv, ev_now); /* not sure if this is right :) */ |
258 | tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */ |
263 | } |
259 | } |
264 | |
260 | |
265 | return events & revents; |
261 | return events & revents; |
266 | } |
262 | } |
267 | |
263 | |
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284 | return 0; |
280 | return 0; |
285 | } |
281 | } |
286 | |
282 | |
287 | int event_base_loop (struct event_base *base, int flags) |
283 | int event_base_loop (struct event_base *base, int flags) |
288 | { |
284 | { |
289 | do |
285 | dLOOPbase; |
290 | { |
286 | |
291 | ev_loop (flags | EVLOOP_ONESHOT); |
287 | ev_loop (EV_A_ flags); |
292 | } |
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293 | while (!(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) && x_actives && !ev_loop_done); |
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294 | |
288 | |
295 | return 0; |
289 | return 0; |
296 | } |
290 | } |
297 | |
291 | |
298 | int event_base_dispatch (struct event_base *base) |
292 | int event_base_dispatch (struct event_base *base) |
299 | { |
293 | { |
300 | return event_base_loop (base, 0); |
294 | return event_base_loop (base, 0); |
301 | } |
295 | } |
302 | |
296 | |
303 | static void |
297 | static void |
304 | x_loopexit_cb (int revents, void *arg) |
298 | x_loopexit_cb (int revents, void *base) |
305 | { |
299 | { |
306 | ev_loop_done = 2; |
300 | dLOOPbase; |
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301 | |
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302 | ev_unloop (EV_A_ EVUNLOOP_ONCE); |
307 | } |
303 | } |
308 | |
304 | |
309 | int event_base_loopexit (struct event_base *base, struct timeval *tv) |
305 | int event_base_loopexit (struct event_base *base, struct timeval *tv) |
310 | { |
306 | { |
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307 | dLOOPbase; |
311 | ev_tstamp after = tv_get (tv); |
308 | ev_tstamp after = tv_get (tv); |
312 | |
309 | |
313 | ev_once (-1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); |
310 | ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); |
314 | |
311 | |
315 | return -1; |
312 | return -1; |
316 | } |
313 | } |
317 | |
314 | |
318 | struct x_once |
315 | struct x_once |
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331 | free (once); |
328 | free (once); |
332 | } |
329 | } |
333 | |
330 | |
334 | int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) |
331 | int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) |
335 | { |
332 | { |
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333 | dLOOPbase; |
336 | struct x_once *once = malloc (sizeof (struct x_once)); |
334 | struct x_once *once = malloc (sizeof (struct x_once)); |
337 | |
335 | |
338 | if (!once) |
336 | if (!once) |
339 | return -1; |
337 | return -1; |
340 | |
338 | |
341 | once->fd = fd; |
339 | once->fd = fd; |
342 | once->cb = cb; |
340 | once->cb = cb; |
343 | once->arg = arg; |
341 | once->arg = arg; |
344 | |
342 | |
345 | ev_once (fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once); |
343 | ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once); |
346 | |
344 | |
347 | return 0; |
345 | return 0; |
348 | } |
346 | } |
349 | |
347 | |
350 | int event_base_priority_init (struct event_base *base, int npri) |
348 | int event_base_priority_init (struct event_base *base, int npri) |
351 | { |
349 | { |
352 | return 0; |
350 | dLOOPbase; |
353 | } |
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354 | |
351 | |
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352 | return 0; |
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353 | } |
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354 | |