1 /**************************************************************************
5 * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
7 * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
8 * JinYoung Jeon <jy0.jeon@samsung.com>,
9 * Taeheon Kim <th908.kim@samsung.com>,
10 * YoungJun Cho <yj44.cho@samsung.com>,
11 * SooChan Lim <sc1.lim@samsung.com>,
12 * Boram Park <sc1.lim@samsung.com>
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the
16 * "Software"), to deal in the Software without restriction, including
17 * without limitation the rights to use, copy, modify, merge, publish,
18 * distribute, sub license, and/or sell copies of the Software, and to
19 * permit persons to whom the Software is furnished to do so, subject to
20 * the following conditions:
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
27 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
29 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
30 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
31 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
32 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 **************************************************************************/
41 #include "tdm_private.h"
44 #include <wayland-server-core.h>
46 typedef struct _tdm_event_loop_source_base {
47 struct wl_event_source *wl_source;
48 } tdm_event_loop_source_base;
50 typedef struct _tdm_event_loop_source_fd {
51 tdm_event_loop_source_base base;
52 tdm_private_display *private_display;
53 tdm_event_loop_fd_handler func;
55 } tdm_event_loop_source_fd;
57 typedef struct _tdm_event_loop_source_timer {
58 tdm_event_loop_source_base base;
59 tdm_private_display *private_display;
60 tdm_event_loop_timer_handler func;
62 } tdm_event_loop_source_timer;
65 _tdm_event_loop_main_fd_handler(int fd, tdm_event_loop_mask mask, void *user_data)
67 tdm_private_display *private_display = (tdm_private_display*)user_data;
68 tdm_private_loop *private_loop;
69 tdm_func_display *func_display;
72 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
73 TDM_RETURN_VAL_IF_FAIL(private_display != NULL, TDM_ERROR_OPERATION_FAILED);
74 TDM_RETURN_VAL_IF_FAIL(private_display->private_loop != NULL, TDM_ERROR_OPERATION_FAILED);
76 private_loop = private_display->private_loop;
78 if (tdm_debug_module & TDM_DEBUG_THREAD)
79 TDM_INFO("backend fd(%d) event happens", private_loop->backend_fd);
81 func_display = &private_display->func_display;
82 if (!func_display->display_handle_events)
83 return TDM_ERROR_NONE;
85 ret = func_display->display_handle_events(private_display->bdata);
91 tdm_event_loop_init(tdm_private_display *private_display)
93 tdm_private_loop *private_loop;
96 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
98 if (private_display->private_loop)
99 return TDM_ERROR_NONE;
101 private_loop = calloc(1, sizeof * private_loop);
103 TDM_ERR("alloc failed");
104 return TDM_ERROR_OUT_OF_MEMORY;
107 private_loop->backend_fd = -1;
109 private_loop->wl_display = wl_display_create();
110 if (!private_loop->wl_display) {
111 TDM_ERR("creating a wayland display failed");
113 return TDM_ERROR_OUT_OF_MEMORY;
115 private_loop->wl_loop = wl_display_get_event_loop(private_loop->wl_display);
117 ret = tdm_server_init(private_loop);
118 if (ret != TDM_ERROR_NONE) {
119 TDM_ERR("server init failed");
120 wl_display_destroy(private_loop->wl_display);
122 return TDM_ERROR_OPERATION_FAILED;
125 private_loop->dpy = private_display;
126 private_display->private_loop = private_loop;
128 ret = tdm_thread_init(private_loop);
129 if (ret != TDM_ERROR_NONE) {
130 TDM_ERR("thread init failed");
131 tdm_server_deinit(private_loop);
132 wl_display_destroy(private_loop->wl_display);
134 return TDM_ERROR_OPERATION_FAILED;
137 TDM_INFO("event loop fd(%d)", wl_event_loop_get_fd(private_loop->wl_loop));
139 return TDM_ERROR_NONE;
143 tdm_event_loop_deinit(tdm_private_display *private_display)
145 TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
147 if (!private_display->private_loop)
150 /* after tdm_thread_deinit, we don't worry about thread things because it's finalized */
151 tdm_thread_deinit(private_display->private_loop);
152 tdm_server_deinit(private_display->private_loop);
154 if (private_display->private_loop->backend_source)
155 tdm_event_loop_source_remove(private_display->private_loop->backend_source);
157 if (private_display->private_loop->wl_display)
158 wl_display_destroy(private_display->private_loop->wl_display);
160 free(private_display->private_loop);
161 private_display->private_loop = NULL;
165 tdm_event_loop_create_backend_source(tdm_private_display *private_display)
167 tdm_private_loop *private_loop = private_display->private_loop;
168 tdm_func_display *func_display;
172 TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
173 TDM_RETURN_IF_FAIL(private_loop != NULL);
175 func_display = &private_display->func_display;
176 if (!func_display->display_get_fd) {
177 TDM_INFO("TDM backend module won't offer a display fd");
181 ret = func_display->display_get_fd(private_display->bdata, &fd);
183 TDM_ERR("TDM backend module returns fd(%d)", fd);
187 if (!func_display->display_handle_events) {
188 TDM_ERR("no display_handle_events function");
192 private_loop->backend_source =
193 tdm_event_loop_add_fd_handler(private_display, fd,
194 TDM_EVENT_LOOP_READABLE,
195 _tdm_event_loop_main_fd_handler,
196 private_display, &ret);
197 if (!private_loop->backend_source) {
198 TDM_ERR("no backend fd(%d) source", fd);
202 private_loop->backend_fd = fd;
204 TDM_INFO("backend fd(%d) source created", private_loop->backend_fd);
208 tdm_event_loop_get_fd(tdm_private_display *private_display)
210 tdm_private_loop *private_loop = private_display->private_loop;
212 /* DON'T check TDM_MUTEX_IS_LOCKED here */
214 TDM_RETURN_VAL_IF_FAIL(private_loop->wl_loop != NULL, -1);
216 return wl_event_loop_get_fd(private_loop->wl_loop);
220 tdm_event_loop_dispatch(tdm_private_display *private_display)
222 tdm_private_loop *private_loop = private_display->private_loop;
224 /* DON'T check TDM_MUTEX_IS_LOCKED here */
226 TDM_RETURN_VAL_IF_FAIL(private_loop->wl_loop != NULL, TDM_ERROR_OPERATION_FAILED);
228 if (tdm_debug_module & TDM_DEBUG_THREAD)
229 TDM_INFO("dispatch");
231 if (tdm_thread_is_running() &&
232 tdm_thread_in_display_thread(syscall(SYS_gettid))) {
233 TDM_NEVER_GET_HERE();
234 return TDM_ERROR_OPERATION_FAILED;
237 /* Don't set timeout to -1. It can make deadblock by two mutex locks.
238 * If need to set -1, use poll() and call tdm_event_loop_dispatch() after
241 if (wl_event_loop_dispatch(private_loop->wl_loop, 0) < 0)
242 TDM_ERR("dispatch failed");
244 wl_display_flush_clients(private_loop->wl_display);
246 return TDM_ERROR_NONE;
251 tdm_event_loop_flush(tdm_private_display *private_display)
253 tdm_private_loop *private_loop = private_display->private_loop;
255 /* DON'T check TDM_MUTEX_IS_LOCKED here */
257 TDM_RETURN_IF_FAIL(private_loop->wl_display != NULL);
259 if (tdm_thread_is_running() &&
260 tdm_thread_in_display_thread(syscall(SYS_gettid))) {
261 TDM_NEVER_GET_HERE();
265 wl_display_flush_clients(private_loop->wl_display);
269 _tdm_event_loop_fd_func(int fd, uint32_t wl_mask, void *data)
271 tdm_event_loop_source_fd *fd_source = (tdm_event_loop_source_fd*)data;
272 tdm_private_display *private_display;
273 tdm_event_loop_mask mask = 0;
275 /* DON'T check TDM_MUTEX_IS_LOCKED here */
277 TDM_RETURN_VAL_IF_FAIL(fd_source, 1);
278 TDM_RETURN_VAL_IF_FAIL(fd_source->func, 1);
280 private_display = fd_source->private_display;
282 if (wl_mask & WL_EVENT_READABLE)
283 mask |= TDM_EVENT_LOOP_READABLE;
284 if (wl_mask & WL_EVENT_WRITABLE)
285 mask |= TDM_EVENT_LOOP_WRITABLE;
286 if (wl_mask & WL_EVENT_HANGUP)
287 mask |= TDM_EVENT_LOOP_HANGUP;
288 if (wl_mask & WL_EVENT_ERROR)
289 mask |= TDM_EVENT_LOOP_ERROR;
291 _pthread_mutex_lock(&private_display->lock);
292 fd_source->func(fd, mask, fd_source->user_data);
293 _pthread_mutex_unlock(&private_display->lock);
298 EXTERN tdm_event_loop_source *
299 tdm_event_loop_add_fd_handler(tdm_display *dpy, int fd, tdm_event_loop_mask mask,
300 tdm_event_loop_fd_handler func, void *user_data,
303 tdm_private_display *private_display;
304 tdm_private_loop *private_loop;
305 tdm_event_loop_source_fd *fd_source;
306 uint32_t wl_mask = 0;
309 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED, NULL);
310 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy, TDM_ERROR_INVALID_PARAMETER, NULL);
311 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(fd >= 0, TDM_ERROR_INVALID_PARAMETER, NULL);
312 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(func, TDM_ERROR_INVALID_PARAMETER, NULL);
314 private_display = (tdm_private_display*)dpy;
315 private_loop = private_display->private_loop;
316 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(private_loop, TDM_ERROR_INVALID_PARAMETER, NULL);
317 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(private_loop->wl_loop, TDM_ERROR_INVALID_PARAMETER, NULL);
319 fd_source = calloc(1, sizeof(tdm_event_loop_source_fd));
320 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(fd_source, TDM_ERROR_OUT_OF_MEMORY, NULL);
322 if (mask & TDM_EVENT_LOOP_READABLE)
323 wl_mask |= WL_EVENT_READABLE;
324 if (mask & TDM_EVENT_LOOP_WRITABLE)
325 wl_mask |= WL_EVENT_WRITABLE;
327 fd_source->private_display = private_display;
328 fd_source->func = func;
329 fd_source->user_data = user_data;
331 fd_source->base.wl_source =
332 wl_event_loop_add_fd(private_loop->wl_loop,
333 fd, wl_mask, _tdm_event_loop_fd_func, fd_source);
334 if (!fd_source->base.wl_source) {
336 *error = TDM_ERROR_OUT_OF_MEMORY;
342 *error = TDM_ERROR_NONE;
344 return (tdm_event_loop_source *)fd_source;
348 tdm_event_loop_source_fd_update(tdm_event_loop_source *source, tdm_event_loop_mask mask)
350 tdm_event_loop_source_fd *fd_source = source;
351 uint32_t wl_mask = 0;
353 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
354 TDM_RETURN_VAL_IF_FAIL(fd_source, TDM_ERROR_INVALID_PARAMETER);
356 if (mask & TDM_EVENT_LOOP_READABLE)
357 wl_mask |= WL_EVENT_READABLE;
358 if (mask & TDM_EVENT_LOOP_WRITABLE)
359 wl_mask |= WL_EVENT_WRITABLE;
361 if (wl_event_source_fd_update(fd_source->base.wl_source, wl_mask) < 0) {
362 TDM_ERR("source update failed: %m");
363 return TDM_ERROR_OPERATION_FAILED;
366 return TDM_ERROR_NONE;
370 _tdm_event_loop_timer_func(void *data)
372 tdm_event_loop_source_timer *timer_source = (tdm_event_loop_source_timer*)data;
373 tdm_private_display *private_display;
375 /* DON'T check TDM_MUTEX_IS_LOCKED here */
377 TDM_RETURN_VAL_IF_FAIL(timer_source, 1);
378 TDM_RETURN_VAL_IF_FAIL(timer_source->func, 1);
380 private_display = timer_source->private_display;
382 /* TDM event_loop function is actually for TDM backend module. When we call the
383 * backend's functions, we have to lock the mutex. TDM backend shouldn't consider
386 _pthread_mutex_lock(&private_display->lock);
387 timer_source->func(timer_source->user_data);
388 _pthread_mutex_unlock(&private_display->lock);
393 EXTERN tdm_event_loop_source *
394 tdm_event_loop_add_timer_handler(tdm_display *dpy, tdm_event_loop_timer_handler func,
395 void *user_data, tdm_error *error)
397 tdm_private_display *private_display;
398 tdm_private_loop *private_loop;
399 tdm_event_loop_source_timer *timer_source;
402 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED, NULL);
403 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy, TDM_ERROR_INVALID_PARAMETER, NULL);
404 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(func, TDM_ERROR_INVALID_PARAMETER, NULL);
406 private_display = (tdm_private_display*)dpy;
407 private_loop = private_display->private_loop;
408 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(private_loop, TDM_ERROR_INVALID_PARAMETER, NULL);
409 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(private_loop->wl_loop, TDM_ERROR_INVALID_PARAMETER, NULL);
411 timer_source = calloc(1, sizeof(tdm_event_loop_source_timer));
412 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(timer_source, TDM_ERROR_OUT_OF_MEMORY, NULL);
414 timer_source->private_display = private_display;
415 timer_source->func = func;
416 timer_source->user_data = user_data;
418 timer_source->base.wl_source =
419 wl_event_loop_add_timer(private_loop->wl_loop,
420 _tdm_event_loop_timer_func, timer_source);
421 if (!timer_source->base.wl_source) {
423 *error = TDM_ERROR_OUT_OF_MEMORY;
429 *error = TDM_ERROR_NONE;
431 return (tdm_event_loop_source *)timer_source;
435 tdm_event_loop_source_timer_update(tdm_event_loop_source *source, unsigned int ms_delay)
437 tdm_event_loop_source_timer *timer_source = source;
439 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
440 TDM_RETURN_VAL_IF_FAIL(timer_source, TDM_ERROR_INVALID_PARAMETER);
442 if (wl_event_source_timer_update(timer_source->base.wl_source, ms_delay) < 0) {
443 TDM_ERR("source update failed: %m");
444 return TDM_ERROR_OPERATION_FAILED;
447 return TDM_ERROR_NONE;
451 tdm_event_loop_source_remove(tdm_event_loop_source *source)
453 tdm_event_loop_source_base *base = (tdm_event_loop_source_base*)source;
455 TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
460 wl_event_source_remove(base->wl_source);