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1 | /* | |
2 | ||
3 | Copyright (C) 2013 Proxmox Server Solutions GmbH | |
4 | ||
5 | Copyright: spiceterm is under GNU GPL, the GNU General Public License. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; version 2 dated June, 1991. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. | |
20 | ||
21 | Author: Dietmar Maurer <dietmar@proxmox.com> | |
22 | ||
23 | */ | |
24 | ||
25 | #include <stdlib.h> | |
26 | #include <stdio.h> | |
27 | #include <sys/time.h> | |
28 | #include <signal.h> | |
29 | #include <string.h> | |
30 | ||
31 | #include <glib.h> | |
32 | ||
33 | #include <spice/macros.h> | |
34 | #include "event_loop.h" | |
35 | ||
36 | int debug = 1; | |
37 | ||
38 | #define DPRINTF(x, format, ...) { \ | |
39 | if (x <= debug) { \ | |
40 | printf("%s: " format "\n" , __FUNCTION__, ## __VA_ARGS__); \ | |
41 | } \ | |
42 | } | |
43 | ||
44 | static GMainLoop *main_loop; | |
45 | ||
46 | static SpiceCoreInterface core; | |
47 | ||
48 | typedef struct SpiceTimer { | |
49 | GSource *source; | |
50 | SpiceTimerFunc func; | |
51 | int ms; | |
52 | void *opaque; | |
53 | } Timer; | |
54 | ||
55 | static SpiceTimer* timer_add(SpiceTimerFunc func, void *opaque) | |
56 | { | |
57 | g_return_val_if_fail(func != NULL, NULL); | |
58 | ||
59 | SpiceTimer *timer = g_new0(SpiceTimer, 1); | |
60 | ||
61 | timer->func = func; | |
62 | timer->opaque = opaque; | |
63 | ||
64 | return timer; | |
65 | } | |
66 | ||
67 | static gboolean timer_callback(gpointer data) | |
68 | { | |
69 | SpiceTimer *timer = (SpiceTimer *)data; | |
70 | g_assert(timer != NULL); | |
71 | g_assert(timer->func != NULL); | |
72 | ||
73 | timer->func(timer->opaque); | |
74 | ||
75 | return FALSE; | |
76 | } | |
77 | ||
78 | static void timer_start(SpiceTimer *timer, uint32_t ms) | |
79 | { | |
80 | g_return_if_fail(timer != NULL); | |
81 | g_return_if_fail(ms != 0); | |
82 | ||
83 | if (timer->source != NULL) { | |
84 | g_source_destroy(timer->source); | |
85 | } | |
86 | ||
87 | timer->source = g_timeout_source_new(ms); | |
88 | g_assert(timer->source != NULL); | |
89 | ||
90 | g_source_set_callback(timer->source, timer_callback, timer, NULL); | |
91 | ||
92 | g_source_attach(timer->source, NULL); | |
93 | } | |
94 | ||
95 | static void timer_cancel(SpiceTimer *timer) | |
96 | { | |
97 | g_return_if_fail(timer != NULL); | |
98 | ||
99 | if (timer->source != NULL) { | |
100 | g_source_destroy(timer->source); | |
101 | timer->source = NULL; | |
102 | } | |
103 | ||
104 | timer->ms = 0; | |
105 | } | |
106 | ||
107 | static void timer_remove(SpiceTimer *timer) | |
108 | { | |
109 | g_return_if_fail(timer != NULL); | |
110 | ||
111 | timer_cancel(timer); | |
112 | g_free(timer); | |
113 | } | |
114 | ||
115 | struct SpiceWatch { | |
116 | GIOChannel *channel; | |
117 | guint evid; | |
118 | int fd; | |
119 | int event_mask; | |
120 | SpiceWatchFunc func; | |
121 | void *opaque; | |
122 | }; | |
123 | ||
124 | static gboolean watch_callback(GIOChannel *source, GIOCondition condition, gpointer data) | |
125 | { | |
126 | SpiceWatch *watch = (SpiceWatch *)data; | |
127 | ||
128 | g_assert(watch != NULL); | |
129 | g_assert(watch->func != NULL); | |
130 | ||
131 | if (condition & G_IO_OUT) { | |
132 | watch->func(watch->fd, SPICE_WATCH_EVENT_WRITE, watch->opaque); | |
133 | } | |
134 | ||
135 | if (condition & G_IO_IN) { | |
136 | watch->func(watch->fd, SPICE_WATCH_EVENT_READ, watch->opaque); | |
137 | } | |
138 | ||
139 | return TRUE; | |
140 | } | |
141 | ||
142 | static GIOCondition event_mask_to_condition(int event_mask) | |
143 | { | |
144 | GIOCondition condition = 0; | |
145 | ||
146 | if (event_mask & SPICE_WATCH_EVENT_READ) { | |
147 | condition |= G_IO_IN; | |
148 | } | |
149 | ||
150 | if (event_mask & SPICE_WATCH_EVENT_WRITE) { | |
151 | condition |= G_IO_OUT; | |
152 | } | |
153 | ||
154 | return condition; | |
155 | } | |
156 | ||
157 | static SpiceWatch *watch_add(int fd, int event_mask, SpiceWatchFunc func, void *opaque) | |
158 | { | |
159 | SpiceWatch *watch = g_new0(SpiceWatch, 1); | |
160 | ||
161 | DPRINTF(0, "adding %p, fd=%d", watch, fd); | |
162 | ||
163 | watch->fd = fd; | |
164 | watch->event_mask = event_mask; | |
165 | watch->func = func; | |
166 | watch->opaque = opaque; | |
167 | watch->channel = g_io_channel_unix_new(fd); | |
168 | ||
169 | g_assert(watch->channel != NULL); | |
170 | g_io_channel_set_encoding(watch->channel, NULL, NULL); | |
171 | ||
172 | GIOCondition condition = event_mask_to_condition(event_mask); | |
173 | watch->evid = g_io_add_watch(watch->channel, condition, watch_callback, watch); | |
174 | ||
175 | return watch; | |
176 | } | |
177 | ||
178 | static void watch_update_mask(SpiceWatch *watch, int event_mask) | |
179 | { | |
180 | g_assert(watch != NULL); | |
181 | ||
182 | DPRINTF(0, "fd %d to %d", watch->fd, event_mask); | |
183 | ||
184 | watch->event_mask = event_mask; | |
185 | ||
186 | g_source_remove(watch->evid); | |
187 | ||
188 | GIOCondition condition = event_mask_to_condition(event_mask); | |
189 | watch->evid = g_io_add_watch(watch->channel, condition, watch_callback, watch); | |
190 | } | |
191 | ||
192 | static void watch_remove(SpiceWatch *watch) | |
193 | { | |
194 | g_assert(watch != NULL); | |
195 | ||
196 | DPRINTF(0, "remove %p (fd %d)", watch, watch->fd); | |
197 | ||
198 | g_source_remove(watch->evid); | |
199 | g_io_channel_unref(watch->channel); | |
200 | ||
201 | g_free(watch); | |
202 | } | |
203 | ||
204 | static void channel_event(int event, SpiceChannelEventInfo *info) | |
205 | { | |
206 | DPRINTF(0, "channel event con, type, id, event: %d, %d, %d, %d", | |
207 | info->connection_id, info->type, info->id, event); | |
208 | } | |
209 | ||
210 | void basic_event_loop_mainloop(void) | |
211 | { | |
212 | g_main_loop_run(main_loop); | |
213 | } | |
214 | ||
215 | static void ignore_sigpipe(void) | |
216 | { | |
217 | struct sigaction act; | |
218 | ||
219 | memset(&act, 0, sizeof(act)); | |
220 | sigfillset(&act.sa_mask); | |
221 | act.sa_handler = SIG_IGN; | |
222 | sigaction(SIGPIPE, &act, NULL); | |
223 | } | |
224 | ||
225 | SpiceCoreInterface *basic_event_loop_init(void) | |
226 | { | |
227 | main_loop = g_main_loop_new(NULL, FALSE); | |
228 | ||
229 | memset(&core, 0, sizeof(core)); | |
230 | core.base.major_version = SPICE_INTERFACE_CORE_MAJOR; | |
231 | core.base.minor_version = SPICE_INTERFACE_CORE_MINOR; | |
232 | core.timer_add = timer_add; | |
233 | core.timer_start = timer_start; | |
234 | core.timer_cancel = timer_cancel; | |
235 | core.timer_remove = timer_remove; | |
236 | core.watch_add = watch_add; | |
237 | core.watch_update_mask = watch_update_mask; | |
238 | core.watch_remove = watch_remove; | |
239 | core.channel_event = channel_event; | |
240 | ||
241 | ignore_sigpipe(); | |
242 | ||
243 | return &core; | |
244 | } |