src/tdm_vblank.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   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>
  13  *
  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:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  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.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include "tdm_private.h"
  41
  42 /* CAUTION:
  43  * Basically tdm vblank doesn't care about thread things.
  44  * However, to use tdm_event_loop_xxx functions, have to use the internal function.
  45  * So need to lock/unlock the mutex of private_display. And valid_vblank_list and
  46  * valid_wait_list should be protected by valid_list_lock because tdm_vblank can
  47  * be used in multi-thread.
  48  */
  49
  50 /* TDM vblank
  51  * - aligned by HW vblank
  52  * - use a tdm_event_loop_source object only.
  53  */
  54
  55 #define TDM_VBLANK_DEFAULT_VREFRESH    30
  56
  57 /* We expact "(unsigned int)(0.0016667 / 0.0016667) = 1". But it becomes 0. */
  58 #define TDM_TIME_MARGIN     0.0000001
  59
  60 #define TDM_VBLANK_UINT_MAX 4294967295U
  61 #define TDM_VBLANK_UINT_1Q  1073741823U     /* UINT_MAX / 4 */
  62 #define TDM_VBLANK_UINT_3Q  3221225471U     /* UINT_MAX / 4 * 3 */
  63
  64 /* (seq < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < last_seq) means
  65  * that the sequence value has reached the max value and started from 0 again.
  66  */
  67 #define TDM_VBLANK_SEQ_REACHED_MAX(seq, last_seq) \
  68         ((seq) < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < (last_seq))
  69
  70 #define VER(fmt, arg...)   TDM_ERR("[%p] "fmt, private_vblank, ##arg)
  71 #define VWR(fmt, arg...)   TDM_WRN("[%p] "fmt, private_vblank, ##arg)
  72 #define VIN(fmt, arg...)   do { if (tdm_debug_module & TDM_DEBUG_VBLANK) TDM_INFO("[%p] "fmt, private_vblank, ##arg); } while (0)
  73 #define VDB(fmt, arg...)   do { if (tdm_debug_module & TDM_DEBUG_VBLANK) TDM_DBG("[%p] "fmt, private_vblank, ##arg); } while (0)
  74
  75 typedef enum {
  76         VBLANK_TYPE_SW,
  77         VBLANK_TYPE_SW_FAKE,
  78         VBLANK_TYPE_HW,
  79         VBLANK_TYPE_HW_SW,
  80 } tdm_vblank_wait_type;
  81
  82 typedef enum {
  83         VBLANK_EVENT_TYPE_NONE,
  84         VBLANK_EVENT_TYPE_SW,
  85         VBLANK_EVENT_TYPE_HW,
  86 } tdm_vblank_event_type;
  87
  88 typedef struct _tdm_vblank_wait_info tdm_vblank_wait_info;
  89
  90 typedef struct _tdm_private_vblank {
  91         struct list_head valid_link;
  92
  93         double stamp;
  94         pid_t owner_tid;
  95
  96         tdm_display *dpy;
  97         tdm_output *output;
  98         tdm_output_conn_status connection;
  99         unsigned int vrefresh;
 100
 101         tdm_vblank_event_type last_type;
 102         unsigned int check_HW_or_SW;
 103         char name[TDM_NAME_LEN];
 104         unsigned int fps;
 105         unsigned int fps_changeable;
 106         unsigned int fps_fixed;
 107         int offset;
 108         unsigned int enable_fake;
 109         unsigned int ignore_global_fps;
 110         unsigned int in_create_handler;
 111
 112         double vblank_gap;
 113         unsigned int quotient;
 114
 115         int last_interval;
 116         unsigned int last_seq;
 117         double last_time;
 118
 119         unsigned int add_front;
 120         struct wl_resource *resource;
 121
 122         /* for HW */
 123         double HW_vblank_gap;
 124         struct list_head HW_wait_list;
 125
 126         /* for SW */
 127         tdm_event_loop_source *SW_timer;
 128         struct list_head SW_wait_list;
 129
 130         /* for timeout */
 131         tdm_event_loop_source *timeout_timer;
 132 } tdm_private_vblank;
 133
 134 struct _tdm_vblank_wait_info {
 135         struct list_head link;
 136         struct list_head valid_link;
 137
 138         double stamp;
 139
 140         double req_time;
 141         unsigned int interval;
 142         int hw_interval;
 143
 144         tdm_vblank_handler func;
 145         void *user_data;
 146         tdm_private_vblank *private_vblank;
 147
 148         tdm_vblank_wait_type type;
 149
 150         double target_time;
 151         unsigned int target_seq;
 152 };
 153
 154 typedef struct _tdm_vblank_create_handler_info {
 155         struct list_head link;
 156
 157         tdm_vblank_create_handler func;
 158         void *user_data;
 159 } tdm_vblank_create_handler_info;
 160
 161 /* valid_vblank_list and valid_wait_list should be protected by valid_list_lock because
 162  * tdm_vblank can be used in multi-thread.
 163  */
 164 static pthread_mutex_t valid_list_lock;
 165 static struct list_head valid_vblank_list;
 166 static struct list_head valid_wait_list;
 167 static struct list_head create_handler_list;
 168 static unsigned int vblank_list_inited;
 169 static unsigned int vblank_global_fps;
 170 static double stamp = 0;
 171
 172 static void _tdm_vblank_cb_vblank_SW(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data);
 173 static tdm_error _tdm_vblank_cb_timeout_SW(void *user_data);
 174 static tdm_error _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info);
 175 static void _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
 176                                                                          unsigned int tv_sec, unsigned int tv_usec,
 177                                                                          void *user_data);
 178 static void _tdm_vblank_timeout_timer_update(tdm_private_vblank *private_vblank, int ms_delay);
 179 static void _tdm_vblank_get_client_information(tdm_private_vblank *private_vblank,
 180                                                                                            pid_t *pid, const char **name);
 181
 182 #if 0
 183 static void
 184 _print_list(tdm_private_vblank *private_vblank)
 185 {
 186         tdm_vblank_wait_info *w = NULL;
 187         int count = 0;
 188
 189         LIST_FOR_EACH_ENTRY(w, &private_vblank->HW_wait_list, link) {
 190                 VIN("HW_wait(%p): type(%d) req_time(%.6f) target_time(%.6f) target_seq(%u)",
 191                         w, w->type, w->req_time, w->target_time, w->target_seq);
 192                 count++;
 193         }
 194
 195         LIST_FOR_EACH_ENTRY(w, &private_vblank->SW_wait_list, link) {
 196                 VIN("SW_wait(%p): type(%d) req_time(%.6f) target_time(%.6f) target_seq(%u)",
 197                         w, w->type, w->req_time, w->target_time, w->target_seq);
 198                 count++;
 199         }
 200
 201         if (!count)
 202                 VIN("NO_wait");
 203 }
 204 #endif
 205
 206 static int
 207 tdm_vblank_is_valid(tdm_vblank *vblank)
 208 {
 209         tdm_private_vblank *v = NULL;
 210
 211         if (vblank && vblank_list_inited) {
 212                 pthread_mutex_lock(&valid_list_lock);
 213                 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 214                         if (v == (tdm_private_vblank *)vblank) {
 215                                 pthread_mutex_unlock(&valid_list_lock);
 216                                 return 1;
 217                         }
 218                 }
 219                 pthread_mutex_unlock(&valid_list_lock);
 220
 221         }
 222         return 0;
 223 }
 224
 225 static void
 226 _tdm_vblank_valid_list_add(struct list_head *valid_link, struct list_head *valid_list)
 227 {
 228         pthread_mutex_lock(&valid_list_lock);
 229         LIST_ADDTAIL(valid_link, valid_list);
 230         pthread_mutex_unlock(&valid_list_lock);
 231 }
 232
 233 static void
 234 _tdm_vblank_valid_list_del(struct list_head *valid_link)
 235 {
 236         pthread_mutex_lock(&valid_list_lock);
 237         LIST_DEL(valid_link);
 238         pthread_mutex_unlock(&valid_list_lock);
 239 }
 240
 241 static inline void*
 242 _tdm_vblank_find_object(tdm_private_display *private_display, double vblank_stamp)
 243 {
 244         tdm_private_vblank *v = NULL;
 245
 246         pthread_mutex_lock(&valid_list_lock);
 247         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 248                 if (v->stamp == vblank_stamp) {
 249                         pthread_mutex_unlock(&valid_list_lock);
 250                         return v;
 251                 }
 252         }
 253         pthread_mutex_unlock(&valid_list_lock);
 254
 255         return NULL;
 256 }
 257
 258 static inline unsigned int
 259 _tdm_vblank_check_valid_wait(tdm_vblank_wait_info *wait_info)
 260 {
 261         tdm_vblank_wait_info *w = NULL;
 262
 263         if (!wait_info)
 264                 return 0;
 265
 266         pthread_mutex_lock(&valid_list_lock);
 267         LIST_FOR_EACH_ENTRY(w, &valid_wait_list, valid_link) {
 268                 if (w == wait_info) {
 269                         pthread_mutex_unlock(&valid_list_lock);
 270                         return 1;
 271                 }
 272         }
 273         pthread_mutex_unlock(&valid_list_lock);
 274
 275         return 0;
 276 }
 277
 278 static inline unsigned int
 279 _tdm_vblank_find_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
 280 {
 281         tdm_vblank_wait_info *w = NULL;
 282
 283         if (!wait_info)
 284                 return 0;
 285
 286         LIST_FOR_EACH_ENTRY(w, list, link) {
 287                 if (w->stamp == wait_info->stamp)
 288                         return 1;
 289         }
 290
 291         return 0;
 292 }
 293
 294 static inline void
 295 _tdm_vblank_insert_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
 296 {
 297         tdm_vblank_wait_info *w = NULL;
 298         tdm_vblank_wait_info *found = NULL;
 299
 300         if (LIST_IS_EMPTY(list)) {
 301                 LIST_ADDTAIL(&wait_info->link, list);
 302                 return;
 303         }
 304
 305         LIST_FOR_EACH_ENTRY(w, list, link) {
 306                 if (wait_info->type == VBLANK_TYPE_SW) {
 307                         if (wait_info->target_time == 0)
 308                                 TDM_NEVER_GET_HERE();
 309                         if (w->target_time <= wait_info->target_time) {
 310                                 found = w;
 311                                 continue;
 312                         }
 313                 } else {
 314                         if (w->interval <= wait_info->interval) {
 315                                 found = w;
 316                                 continue;
 317                         }
 318                 }
 319         }
 320
 321         if (found)
 322                 LIST_ADD(&wait_info->link, &found->link);
 323         else
 324                 LIST_ADDTAIL(&wait_info->link, list->next);
 325 }
 326
 327 static void
 328 _tdm_vblank_change_to_SW(tdm_private_vblank *private_vblank)
 329 {
 330         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 331
 332         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
 333                 LIST_DEL(&w->link);
 334
 335                 tdm_display_lock(private_vblank->dpy);
 336                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
 337                 tdm_display_unlock(private_vblank->dpy);
 338
 339                 w->type = VBLANK_TYPE_SW_FAKE;
 340                 _tdm_vblank_wait_SW(w);
 341         }
 342 }
 343
 344 static void
 345 _tdm_vblank_free_HW_wait(tdm_private_vblank *private_vblank, tdm_error error, unsigned int call_cb)
 346 {
 347         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 348
 349         if (!LIST_IS_EMPTY(&private_vblank->HW_wait_list)) {
 350                 pid_t pid;
 351                 const char *proc_name;
 352                 _tdm_vblank_get_client_information(private_vblank, &pid, &proc_name);
 353                 VWR("TDM HW vblank destroyed forcely!! (pid: %u, name: %s)", pid, proc_name);
 354         }
 355
 356         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
 357                 LIST_DEL(&w->link);
 358                 _tdm_vblank_valid_list_del(&w->valid_link);
 359
 360                 tdm_display_lock(private_vblank->dpy);
 361                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
 362                 tdm_display_unlock(private_vblank->dpy);
 363
 364                 VDB("wait(%p) last(%.6f) sequence(%u) done (error:%d, call_cb:%u)",
 365                         w, (double)0.0, w->target_seq, error, call_cb);
 366
 367                 if (call_cb && w->func)
 368                         w->func(private_vblank, error, 0, 0, 0, w->user_data);
 369
 370                 free(w);
 371         }
 372 }
 373
 374 static void
 375 _tdm_vblank_update_output_info(tdm_private_vblank *private_vblank)
 376 {
 377         tdm_output *output = private_vblank->output;
 378         tdm_output_conn_status connection = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 379         unsigned int vrefresh = TDM_VBLANK_DEFAULT_VREFRESH;
 380         tdm_error ret;
 381
 382         ret = tdm_output_get_conn_status(output, &connection);
 383         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 384
 385         if (connection == TDM_OUTPUT_CONN_STATUS_MODE_SETTED) {
 386                 const tdm_output_mode *mode = NULL;
 387                 tdm_output_get_mode(output, &mode);
 388                 if (mode)
 389                         vrefresh = mode->vrefresh;
 390                 else
 391                         VWR("mode not setted!!!");
 392         }
 393
 394         private_vblank->connection = connection;
 395         private_vblank->vrefresh = vrefresh;
 396         private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
 397
 398         if (private_vblank->fps_changeable)
 399                 private_vblank->fps = vrefresh;
 400
 401         VIN("connection(%d) vrefresh(%d) fps(%d) fps_changeable(%d)",
 402                 private_vblank->connection,
 403                 private_vblank->vrefresh, private_vblank->fps, private_vblank->fps_changeable);
 404 }
 405
 406 /* LCOV_EXCL_START */
 407 static void
 408 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
 409                                                          tdm_value value, void *user_data)
 410 {
 411         tdm_private_vblank *private_vblank = user_data;
 412
 413         TDM_RETURN_IF_FAIL(tdm_vblank_is_valid(private_vblank));
 414
 415         switch (type) {
 416         case TDM_OUTPUT_CHANGE_DPMS:
 417                 VIN("dpms %s", tdm_dpms_str(value.u32));
 418                 private_vblank->check_HW_or_SW = 1;
 419                 if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(value.u32)) {
 420                         if (private_vblank->enable_fake)
 421                                 _tdm_vblank_change_to_SW(private_vblank);
 422                         else {
 423                                 tdm_display_lock(private_vblank->dpy);
 424                                 _tdm_vblank_timeout_timer_update(private_vblank, 0);
 425                                 tdm_display_unlock(private_vblank->dpy);
 426
 427                                 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
 428                         }
 429                 }
 430                 break;
 431         case TDM_OUTPUT_CHANGE_CONNECTION:
 432                 if (private_vblank->connection == value.u32)
 433                         break;
 434                 VIN("output %s", tdm_status_str(value.u32));
 435                 _tdm_vblank_update_output_info(private_vblank);
 436                 private_vblank->check_HW_or_SW = 1;
 437                 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 438                         if (private_vblank->enable_fake)
 439                                 _tdm_vblank_change_to_SW(private_vblank);
 440                         else {
 441                                 tdm_display_lock(private_vblank->dpy);
 442                                 _tdm_vblank_timeout_timer_update(private_vblank, 0);
 443                                 tdm_display_unlock(private_vblank->dpy);
 444
 445                                 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_OUTPUT_DISCONNECTED, 1);
 446                         }
 447                 }
 448                 break;
 449         default:
 450                 break;
 451         }
 452 }
 453 /* LCOV_EXCL_STOP */
 454
 455 EXTERN tdm_error
 456 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
 457 {
 458         tdm_private_vblank *v = NULL;
 459
 460         TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
 461         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 462
 463         TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
 464
 465         pthread_mutex_lock(&valid_list_lock);
 466         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 467                 struct wl_client *client;
 468                 pid_t client_pid = 0;
 469
 470                 if (!v->resource)
 471                         continue;
 472
 473                 client = wl_resource_get_client(v->resource);
 474                 if (!client)
 475                         continue;
 476
 477                 wl_client_get_credentials(client, &client_pid, NULL, NULL);
 478
 479                 if (client_pid != pid)
 480                         continue;
 481
 482                 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
 483                         if (strncmp(v->name, name, TDM_NAME_LEN))
 484                                 continue;
 485                 }
 486
 487                 tdm_vblank_set_fps(v, fps);
 488
 489                 TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
 490         }
 491         pthread_mutex_unlock(&valid_list_lock);
 492
 493         return TDM_ERROR_NONE;
 494 }
 495
 496 EXTERN tdm_error
 497 tdm_vblank_set_client_ignore_global_fps(unsigned int pid, const char *name, unsigned int ignore)
 498 {
 499         tdm_private_vblank *v = NULL;
 500
 501         TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
 502
 503         TDM_INFO("pid: %u, name: %s, ignore: %u", pid, name, ignore);
 504
 505         pthread_mutex_lock(&valid_list_lock);
 506         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 507                 struct wl_client *client;
 508                 pid_t client_pid = 0;
 509
 510                 if (!v->resource)
 511                         continue;
 512
 513                 client = wl_resource_get_client(v->resource);
 514                 if (!client)
 515                         continue;
 516
 517                 wl_client_get_credentials(client, &client_pid, NULL, NULL);
 518
 519                 if (client_pid != pid)
 520                         continue;
 521
 522                 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
 523                         if (strncmp(v->name, name, TDM_NAME_LEN))
 524                                 continue;
 525                 }
 526
 527                 tdm_vblank_ignore_global_fps(v, ignore);
 528
 529                 TDM_INFO("(pid:%u) '%s' ignore changed: %u", pid, v->name, ignore);
 530         }
 531         pthread_mutex_unlock(&valid_list_lock);
 532
 533         return TDM_ERROR_NONE;
 534 }
 535
 536 EXTERN tdm_error
 537 tdm_vblank_enable_global_fps(unsigned int enable, unsigned int fps)
 538 {
 539         tdm_private_vblank *v = NULL;
 540
 541         if (enable)
 542                 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 543
 544         TDM_INFO("global fps: %s fps(%d)", (enable) ? "enabled" : "disabled", fps);
 545
 546         pthread_mutex_lock(&valid_list_lock);
 547
 548         vblank_global_fps = (enable) ? fps : 0;
 549
 550         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 551                 /* skip if vblank is created in server side */
 552                 if (!v->resource)
 553                         continue;
 554
 555                 v->check_HW_or_SW = 1;
 556         }
 557         pthread_mutex_unlock(&valid_list_lock);
 558
 559         return TDM_ERROR_NONE;
 560 }
 561
 562 static void
 563 _tdm_vblank_thread_cb_create(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data)
 564 {
 565         tdm_thread_cb_vblank_create *vblank_create = (tdm_thread_cb_vblank_create *)cb_base;
 566         tdm_vblank_create_handler_info *ch_info = user_data;
 567         tdm_private_vblank *private_vblank;
 568
 569         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 570
 571         assert(ch_info != NULL);
 572
 573         private_vblank = _tdm_vblank_find_object(private_display, vblank_create->vblank_stamp);
 574         if (!private_vblank) {
 575                 TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_create->vblank_stamp);
 576                 return;
 577         }
 578
 579         /* use in_create_handler instead of mutext unlock/lock */
 580         private_vblank->in_create_handler = 1;
 581         ch_info->func(private_vblank, ch_info->user_data);
 582         private_vblank->in_create_handler = 0;
 583 }
 584
 585 static tdm_error
 586 _tdm_vblank_call_thread_cb(tdm_private_vblank *private_vblank)
 587 {
 588         tdm_thread_cb_vblank_create vblank_create;
 589         tdm_error ret;
 590
 591         memset(&vblank_create, 0, sizeof vblank_create);
 592         vblank_create.base.type = TDM_THREAD_CB_VBLANK_CREATE;
 593         vblank_create.base.length = sizeof vblank_create;
 594         vblank_create.base.object_stamp = 1;
 595         vblank_create.base.data = NULL;
 596         vblank_create.base.sync = 0;
 597         vblank_create.vblank_stamp = private_vblank->stamp;
 598
 599         ret = tdm_thread_cb_call(private_vblank->dpy, &vblank_create.base);
 600         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 601
 602         return TDM_ERROR_NONE;
 603 }
 604
 605 EXTERN tdm_error
 606 tdm_vblank_add_create_handler(tdm_display *dpy, tdm_vblank_create_handler func, void *user_data)
 607 {
 608         tdm_vblank_create_handler_info *ch_info = NULL;
 609         tdm_error ret;
 610
 611         TDM_RETURN_VAL_IF_FAIL(!TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
 612         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
 613
 614         LIST_FOR_EACH_ENTRY(ch_info, &create_handler_list, link) {
 615                 if (ch_info->func == func && ch_info->user_data == user_data) {
 616                         TDM_ERR("can't be added twice");
 617                         return TDM_ERROR_BAD_REQUEST;
 618                 }
 619         }
 620
 621         ch_info = calloc(1, sizeof *ch_info);
 622         TDM_RETURN_VAL_IF_FAIL(ch_info != NULL, TDM_ERROR_OUT_OF_MEMORY);
 623
 624         tdm_display_lock(dpy);
 625         ret = tdm_thread_cb_add(dpy, TDM_THREAD_CB_VBLANK_CREATE, NULL, _tdm_vblank_thread_cb_create, ch_info);
 626         tdm_display_unlock(dpy);
 627
 628         if (ret != TDM_ERROR_NONE) {
 629                 TDM_ERR("tdm_thread_cb_add failed");
 630                 free(ch_info);
 631                 return ret;
 632         }
 633
 634         ch_info->func = func;
 635         ch_info->user_data = user_data;
 636
 637         LIST_ADDTAIL(&ch_info->link, &create_handler_list);
 638         return TDM_ERROR_NONE;
 639 }
 640
 641 EXTERN void
 642 tdm_vblank_remove_create_handler(tdm_display *dpy, tdm_vblank_create_handler func, void *user_data)
 643 {
 644         tdm_vblank_create_handler_info *ch_info = NULL, *hh = NULL;
 645
 646         TDM_RETURN_IF_FAIL(!TDM_MUTEX_IS_LOCKED());
 647
 648         /* we don't allow adding a create handler in sub-thread because tdm_vblank_create()
 649          * can be called in both threads and tdm_thread_send_cb supports only one-way
 650          * communication now.
 651          */
 652         if (!tdm_thread_in_display_thread(syscall(SYS_gettid))) {
 653                 TDM_ERR("remove_create_handler should be called in main thread");
 654                 return;
 655         }
 656
 657         tdm_display_lock(dpy);
 658
 659         LIST_FOR_EACH_ENTRY_SAFE(ch_info, hh, &create_handler_list, link) {
 660                 if (ch_info->func != func && ch_info->user_data != user_data)
 661                         continue;
 662
 663                 tdm_thread_cb_remove(dpy, TDM_THREAD_CB_VBLANK_CREATE, NULL, _tdm_vblank_thread_cb_create, ch_info);
 664
 665                 LIST_DEL(&ch_info->link);
 666                 free(ch_info);
 667                 tdm_display_unlock(dpy);
 668                 return;
 669         }
 670
 671         tdm_display_unlock(dpy);
 672 }
 673
 674 static void*
 675 _tdm_vblank_find_display(tdm_private_display *private_display, double stamp)
 676 {
 677         return private_display;
 678 }
 679
 680 INTERN tdm_error
 681 tdm_vblank_init(tdm_display *dpy)
 682 {
 683         if (vblank_list_inited)
 684                 return TDM_ERROR_NONE;
 685
 686         if (pthread_mutex_init(&valid_list_lock, NULL)) {
 687                 TDM_ERR("mutex init failed: %m");
 688                 return TDM_ERROR_OUT_OF_MEMORY;
 689         }
 690
 691         LIST_INITHEAD(&valid_vblank_list);
 692         LIST_INITHEAD(&valid_wait_list);
 693         LIST_INITHEAD(&create_handler_list);
 694
 695         tdm_thread_cb_set_find_func(TDM_THREAD_CB_VBLANK_SW, _tdm_vblank_find_object);
 696         tdm_thread_cb_set_find_func(TDM_THREAD_CB_VBLANK_CREATE, _tdm_vblank_find_display);
 697
 698         vblank_list_inited = 1;
 699
 700         return TDM_ERROR_NONE;
 701 }
 702
 703 INTERN void
 704 tdm_vblank_deinit(tdm_display *dpy)
 705 {
 706         tdm_vblank_create_handler_info *ch_info = NULL, *hh = NULL;
 707
 708         if (!vblank_list_inited)
 709                 return;
 710
 711         if (!LIST_IS_EMPTY(&valid_vblank_list))
 712                 TDM_NEVER_GET_HERE();
 713
 714         if (!LIST_IS_EMPTY(&valid_wait_list))
 715                 TDM_NEVER_GET_HERE();
 716
 717         LIST_FOR_EACH_ENTRY_SAFE(ch_info, hh, &create_handler_list, link) {
 718                 LIST_DEL(&ch_info->link);
 719                 free(ch_info);
 720         }
 721
 722         pthread_mutex_destroy(&valid_list_lock);
 723
 724         vblank_list_inited = 0;
 725 }
 726
 727 EXTERN tdm_vblank *
 728 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
 729 {
 730         tdm_private_vblank *private_vblank;
 731         tdm_error ret;
 732
 733         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(tdm_display_is_valid(dpy), TDM_ERROR_INVALID_PARAMETER, NULL);
 734         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(tdm_output_is_valid(output), TDM_ERROR_INVALID_PARAMETER, NULL);
 735
 736         if (error)
 737                 *error = TDM_ERROR_NONE;
 738
 739         private_vblank = calloc(1, sizeof * private_vblank);
 740         if (!private_vblank) {
 741                 /* LCOV_EXCL_START */
 742                 if (error)
 743                         *error = TDM_ERROR_OUT_OF_MEMORY;
 744                 TDM_ERR("alloc failed");
 745                 return NULL;
 746                 /* LCOV_EXCL_STOP */
 747         }
 748
 749         tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
 750
 751         private_vblank->stamp = ++stamp;
 752         private_vblank->owner_tid = syscall(SYS_gettid);
 753         private_vblank->dpy = dpy;
 754         private_vblank->output = output;
 755         private_vblank->check_HW_or_SW = 1;
 756         private_vblank->fps_changeable = 1;
 757         private_vblank->last_interval = -1;
 758
 759         _tdm_vblank_update_output_info(private_vblank);
 760
 761         strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
 762         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 763
 764         LIST_INITHEAD(&private_vblank->HW_wait_list);
 765         LIST_INITHEAD(&private_vblank->SW_wait_list);
 766
 767         _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
 768
 769         VIN("created. vrefresh(%d) connection(%d)",
 770                 private_vblank->vrefresh, private_vblank->connection);
 771
 772         tdm_display_lock(private_vblank->dpy);
 773         _tdm_vblank_call_thread_cb(private_vblank);
 774         tdm_display_unlock(private_vblank->dpy);
 775
 776         return (tdm_vblank *)private_vblank;
 777 }
 778
 779 EXTERN void
 780 tdm_vblank_destroy(tdm_vblank *vblank)
 781 {
 782         tdm_private_vblank *private_vblank = vblank;
 783         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 784
 785         TDM_RETURN_IF_FAIL(tdm_vblank_is_valid(vblank));
 786
 787         if (private_vblank->in_create_handler) {
 788                 TDM_ERR("NOT allowed to be called in a create handler");
 789                 return;
 790         }
 791
 792         _tdm_vblank_valid_list_del(&private_vblank->valid_link);
 793
 794         if (private_vblank->SW_timer) {
 795                 tdm_display_lock(private_vblank->dpy);
 796                 tdm_thread_cb_remove(private_vblank, TDM_THREAD_CB_VBLANK_SW, NULL, _tdm_vblank_cb_vblank_SW, NULL);
 797                 tdm_event_loop_source_remove(private_vblank->SW_timer);
 798                 tdm_display_unlock(private_vblank->dpy);
 799         }
 800
 801         tdm_output_remove_change_handler(private_vblank->output,
 802                                                                          _tdm_vblank_cb_output_change, private_vblank);
 803
 804         _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
 805
 806         if (!LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
 807                 pid_t pid;
 808                 const char *proc_name;
 809                 _tdm_vblank_get_client_information(private_vblank, &pid, &proc_name);
 810                 VER("TDM SW vblank destroyed forcely!! (pid: %u, name: %s)", pid, proc_name);
 811         }
 812
 813         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
 814                 LIST_DEL(&w->link);
 815                 _tdm_vblank_valid_list_del(&w->valid_link);
 816                 free(w);
 817         }
 818
 819         if (private_vblank->timeout_timer) {
 820                 tdm_display_lock(private_vblank->dpy);
 821                 tdm_event_loop_source_remove(private_vblank->timeout_timer);
 822                 tdm_display_unlock(private_vblank->dpy);
 823         }
 824
 825         VIN("destroyed");
 826
 827         free(private_vblank);
 828 }
 829
 830 EXTERN tdm_error
 831 tdm_vblank_get_client_pid(tdm_vblank *vblank, pid_t *pid)
 832 {
 833         tdm_private_vblank *private_vblank = vblank;
 834         struct wl_client *client;
 835
 836         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 837         TDM_RETURN_VAL_IF_FAIL(pid != NULL, TDM_ERROR_INVALID_PARAMETER);
 838
 839         if (!private_vblank->resource) {
 840                 *pid = 0;
 841                 return TDM_ERROR_NONE;
 842         }
 843
 844         client = wl_resource_get_client(private_vblank->resource);
 845         if (!client) {
 846                 *pid = 0;
 847                 return TDM_ERROR_NONE;
 848         }
 849
 850         wl_client_get_credentials(client, pid, NULL, NULL);
 851
 852         return TDM_ERROR_NONE;
 853 }
 854
 855 EXTERN tdm_error
 856 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
 857 {
 858         tdm_private_vblank *private_vblank = vblank;
 859
 860         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 861
 862         if (!name)
 863                 name = TDM_VBLANK_DEFAULT_NAME;
 864
 865         strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
 866         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 867
 868         VIN("name(%s)", name);
 869
 870         return TDM_ERROR_NONE;
 871 }
 872
 873 EXTERN tdm_error
 874 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
 875 {
 876         tdm_private_vblank *private_vblank = vblank;
 877
 878         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 879         TDM_RETURN_VAL_IF_FAIL(name != NULL, TDM_ERROR_INVALID_PARAMETER);
 880
 881         *name = (const char*)private_vblank->name;
 882
 883         return TDM_ERROR_NONE;
 884 }
 885
 886 EXTERN tdm_error
 887 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
 888 {
 889         tdm_private_vblank *private_vblank = vblank;
 890
 891         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 892         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 893
 894         if (private_vblank->fps_fixed) {
 895                 VIN("fps(%d) can't be changed", private_vblank->fps);
 896                 return TDM_ERROR_NONE;
 897         }
 898
 899         private_vblank->fps_changeable = 0;
 900
 901         if (private_vblank->fps == fps)
 902                 return TDM_ERROR_NONE;
 903
 904         private_vblank->fps = fps;
 905         private_vblank->check_HW_or_SW = 1;
 906
 907         VIN("fps(%d) changed", fps);
 908
 909         return TDM_ERROR_NONE;
 910 }
 911
 912 EXTERN tdm_error
 913 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
 914 {
 915         tdm_private_vblank *private_vblank = vblank;
 916
 917         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 918         TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
 919
 920         *fps = private_vblank->fps;
 921
 922         return TDM_ERROR_NONE;
 923 }
 924
 925 EXTERN tdm_error
 926 tdm_vblank_set_fixed_fps(tdm_vblank *vblank, unsigned int fps)
 927 {
 928         tdm_private_vblank *private_vblank = vblank;
 929
 930         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 931         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 932
 933         private_vblank->fps_changeable = 0;
 934         private_vblank->fps_fixed = 1;
 935
 936         if (private_vblank->fps == fps)
 937                 return TDM_ERROR_NONE;
 938
 939         private_vblank->fps = fps;
 940         private_vblank->check_HW_or_SW = 1;
 941
 942         VIN("fps(%d) fixed", fps);
 943
 944         return TDM_ERROR_NONE;
 945 }
 946
 947 EXTERN tdm_error
 948 tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
 949 {
 950         tdm_private_vblank *private_vblank = vblank;
 951
 952         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 953
 954         if (private_vblank->ignore_global_fps == ignore)
 955                 return TDM_ERROR_NONE;
 956
 957         private_vblank->ignore_global_fps = ignore;
 958         private_vblank->check_HW_or_SW = 1;
 959
 960         VIN("ignore_global_fps(%d)", private_vblank->ignore_global_fps);
 961
 962         return TDM_ERROR_NONE;
 963 }
 964
 965 EXTERN tdm_error
 966 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
 967 {
 968         tdm_private_vblank *private_vblank = vblank;
 969
 970         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 971
 972         if (private_vblank->offset == offset)
 973                 return TDM_ERROR_NONE;
 974
 975         private_vblank->offset = offset;
 976         private_vblank->check_HW_or_SW = 1;
 977
 978         VIN("offset(%d)", private_vblank->offset);
 979
 980         return TDM_ERROR_NONE;
 981 }
 982
 983 EXTERN tdm_error
 984 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
 985 {
 986         tdm_private_vblank *private_vblank = vblank;
 987
 988         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 989         TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
 990
 991         *offset = private_vblank->offset;
 992
 993         return TDM_ERROR_NONE;
 994 }
 995
 996 EXTERN tdm_error
 997 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
 998 {
 999         tdm_private_vblank *private_vblank = vblank;
1000
1001         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1002
1003         if (private_vblank->enable_fake == enable_fake)
1004                 return TDM_ERROR_NONE;
1005
1006         private_vblank->enable_fake = enable_fake;
1007
1008         VIN("enable_fake(%d)", private_vblank->enable_fake);
1009
1010         return TDM_ERROR_NONE;
1011 }
1012
1013 EXTERN tdm_error
1014 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
1015 {
1016         tdm_private_vblank *private_vblank = vblank;
1017
1018         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1019         TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
1020
1021         *enable_fake = private_vblank->enable_fake;
1022
1023         return TDM_ERROR_NONE;
1024 }
1025
1026 static tdm_error
1027 _tdm_vblank_timeout_timer_cb(void *user_data)
1028 {
1029         tdm_private_vblank *private_vblank = user_data;
1030         tdm_vblank_wait_info *w = NULL;
1031         pid_t pid;
1032         const char *proc_name;
1033
1034         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
1035
1036         _tdm_vblank_get_client_information(private_vblank, &pid, &proc_name);
1037
1038         VER("TDM vblank TIMEOUT!! (pid: %u, name: %s)", pid, proc_name);
1039         VER("quotient(%u) last_seq(%u) last_time(%.6f)", private_vblank->quotient, private_vblank->last_seq, private_vblank->last_time);
1040
1041         LIST_FOR_EACH_ENTRY(w, &private_vblank->HW_wait_list, link) {
1042                 VER("wait_info(%p) req_time(%.6f) target_seq(%u) interval(%u) hw_interval(%d)",
1043                         w, w->req_time, w->target_seq, w->interval, w->hw_interval);
1044                 tdm_output_vblank_print_wait_information(private_vblank->output, w);
1045         }
1046
1047         LIST_FOR_EACH_ENTRY(w, &private_vblank->SW_wait_list, link) {
1048                 VER("wait_info(%p) req_time(%.6f) target_time(%.6f) target_seq(%u) interval(%u)",
1049                         w, w->req_time, w->target_time, w->target_seq, w->interval);
1050         }
1051
1052         return TDM_ERROR_NONE;
1053 }
1054
1055 static void
1056 _tdm_vblank_timeout_timer_update(tdm_private_vblank *private_vblank, int ms_delay)
1057 {
1058         tdm_error ret;
1059
1060         if (!private_vblank->timeout_timer) {
1061                 private_vblank->timeout_timer =
1062                         tdm_event_loop_add_timer_handler(private_vblank->dpy,
1063                                                                                          _tdm_vblank_timeout_timer_cb,
1064                                                                                          private_vblank,
1065                                                                                          &ret);
1066                 if (!private_vblank->timeout_timer) {
1067                         VER("couldn't add timer");
1068                         return;
1069                 }
1070                 VIN("Create Timeout timer");
1071         }
1072
1073         ret = tdm_event_loop_source_timer_update(private_vblank->timeout_timer, ms_delay);
1074         if (ret != TDM_ERROR_NONE) {
1075                 VER("couldn't update timer");
1076                 return;
1077         }
1078
1079         if (ms_delay != 0)
1080                 VDB("timeout timer updated");
1081         else
1082                 VDB("timeout timer disabled");
1083 }
1084
1085 static tdm_error
1086 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
1087 {
1088         tdm_vblank_wait_info *first_wait_info = NULL;
1089         double curr, target;
1090         int ms_delay;
1091         tdm_error ret;
1092
1093         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
1094                 VER("no wait_info");
1095                 return TDM_ERROR_OPERATION_FAILED;
1096         }
1097
1098         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
1099         curr = tdm_helper_get_time();
1100         target = first_wait_info->target_time;
1101
1102         /* ms_delay should be more that 1 */
1103         if (target < curr)
1104                 ms_delay = 1;
1105         else
1106                 ms_delay = ceil((target - curr) * 1000.0);
1107
1108         if (ms_delay < 1)
1109                 ms_delay = 1;
1110
1111         if (ms_delay > 5000)
1112                 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
1113         else
1114                 VDB("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
1115
1116         tdm_display_lock(private_vblank->dpy);
1117
1118         if (!private_vblank->SW_timer) {
1119                 private_vblank->SW_timer =
1120                         tdm_event_loop_add_timer_handler(private_vblank->dpy,
1121                                                                                          _tdm_vblank_cb_timeout_SW,
1122                                                                                          private_vblank,
1123                                                                                          &ret);
1124                 if (!private_vblank->SW_timer) {
1125                         tdm_display_unlock(private_vblank->dpy);
1126                         VER("couldn't add timer");
1127                         return ret;
1128                 }
1129
1130                 ret = tdm_thread_cb_add(private_vblank, TDM_THREAD_CB_VBLANK_SW, NULL, _tdm_vblank_cb_vblank_SW, NULL);
1131                 if (ret != TDM_ERROR_NONE) {
1132                         tdm_event_loop_source_remove(private_vblank->SW_timer);
1133                         private_vblank->SW_timer = NULL;
1134                         tdm_display_unlock(private_vblank->dpy);
1135                         VER("couldn't add thread_cb");
1136                         return ret;
1137                 }
1138
1139                 VIN("Create SW timer");
1140         }
1141
1142         private_vblank->last_interval = ms_delay;
1143
1144         ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
1145         if (ret != TDM_ERROR_NONE) {
1146                 /* LCOV_EXCL_START */
1147                 tdm_display_unlock(private_vblank->dpy);
1148                 VER("couldn't update timer");
1149                 return ret;
1150                 /* LCOV_EXCL_STOP */
1151         }
1152
1153         tdm_display_unlock(private_vblank->dpy);
1154
1155         return TDM_ERROR_NONE;
1156 }
1157
1158 static void
1159 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
1160                                                  unsigned int tv_sec, unsigned int tv_usec,
1161                                                  void *user_data)
1162 {
1163         tdm_vblank_wait_info *wait_info = user_data;
1164         tdm_private_vblank *private_vblank;
1165
1166         if (!_tdm_vblank_check_valid_wait(wait_info)) {
1167                 TDM_ERR("can't find wait(%p) from valid_wait_list", wait_info);
1168                 return;
1169         }
1170
1171         private_vblank = wait_info->private_vblank;
1172         TDM_RETURN_IF_FAIL(tdm_vblank_is_valid(private_vblank));
1173
1174         assert(private_vblank->owner_tid == syscall(SYS_gettid));
1175
1176         if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
1177                 VER("can't find wait(%p)", wait_info);
1178                 return;
1179         }
1180
1181         if (wait_info->type == VBLANK_TYPE_HW_SW) {
1182                 tdm_error ret;
1183
1184                 LIST_DEL(&wait_info->link);
1185
1186                 /* kernel sends the wrong time of first vblank event. and the time of
1187                  * second vblank is correct.
1188                  */
1189                 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
1190                 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
1191
1192                 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
1193
1194                 ret = _tdm_vblank_sw_timer_update(private_vblank);
1195
1196                 /* wait_info will be freed in _tdm_vblank_cb_timeout_SW() */
1197                 if (ret == TDM_ERROR_NONE) {
1198                         VIN("wait(%p) SW timer", wait_info);
1199                         return;
1200                 }
1201
1202                 VER("couldn't update sw timer");
1203         }
1204
1205         tdm_display_lock(private_vblank->dpy);
1206         _tdm_vblank_timeout_timer_update(private_vblank, 0);
1207         tdm_display_unlock(private_vblank->dpy);
1208
1209         LIST_DEL(&wait_info->link);
1210         _tdm_vblank_valid_list_del(&wait_info->valid_link);
1211
1212         /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
1213          * We need to prohibit that last_time becomes zero because "last_time == 0" means
1214          * that a tdm_vblank object is just created and doesn't have the first vblank event.
1215          * If last_time becomes 0, it would make issue.
1216          */
1217         if (tv_sec == 0 && tv_usec == 0) {
1218                 double curr = tdm_helper_get_time();
1219                 tv_sec = TDM_TIME_SEC(curr);
1220                 tv_usec = TDM_TIME_USEC(curr);
1221         }
1222
1223         private_vblank->last_seq = wait_info->target_seq;
1224         private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
1225
1226         VDB("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
1227
1228         if (tdm_ttrace_module & TDM_TTRACE_VBLANK)
1229                 TDM_TRACE_ASYNC_END((int)wait_info->req_time, "TDM_Vblank:%u", (unsigned int)private_vblank->stamp);
1230
1231         if (wait_info->func)
1232                 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
1233                                                 tv_sec, tv_usec, wait_info->user_data);
1234
1235         free(wait_info);
1236 }
1237
1238 static tdm_error
1239 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
1240 {
1241         tdm_private_vblank *private_vblank = wait_info->private_vblank;
1242         int hw_interval;
1243         tdm_error ret;
1244
1245         if (private_vblank->last_type != VBLANK_EVENT_TYPE_HW) {
1246                 VIN("Use HW vblank");
1247                 private_vblank->last_type = VBLANK_EVENT_TYPE_HW;
1248         }
1249
1250         _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
1251
1252         if (private_vblank->last_time == 0) {
1253                 hw_interval = wait_info->interval * private_vblank->quotient;
1254
1255                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
1256                 private_vblank->last_seq = 0;
1257                 private_vblank->last_time = tdm_helper_get_time();
1258
1259                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
1260                 wait_info->target_seq = 1;
1261
1262                 VDB("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
1263                         wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
1264         } else {
1265                 double last, prev, req, curr, target;
1266                 unsigned int skip;
1267
1268                 last = private_vblank->last_time;
1269                 req = wait_info->req_time;
1270
1271                 /* make sure that req time is bigger than last. */
1272                 if (req < last)
1273                         req = last;
1274
1275                 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1276                 prev = last + private_vblank->vblank_gap * skip;
1277
1278                 curr = tdm_helper_get_time();
1279                 target = last;
1280                 while (target < curr)
1281                         target += (private_vblank->vblank_gap * wait_info->interval);
1282
1283                 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
1284
1285                 wait_info->target_seq = private_vblank->last_seq;
1286                 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1287
1288                 if (hw_interval > 300)
1289                         VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
1290                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
1291                                 skip, hw_interval, wait_info->target_seq);
1292                 else
1293                         VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
1294                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
1295                                 skip, hw_interval, wait_info->target_seq);
1296         }
1297
1298         private_vblank->last_interval = hw_interval;
1299         wait_info->hw_interval = hw_interval;
1300
1301         if (tdm_ttrace_module & TDM_TTRACE_VBLANK)
1302                 TDM_TRACE_ASYNC_BEGIN((int)wait_info->req_time, "TDM_Vblank:%u", (unsigned int)private_vblank->stamp);
1303
1304         if (private_vblank->add_front)
1305                 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
1306                                                                                            _tdm_vblank_cb_vblank_HW, wait_info);
1307         else
1308                 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
1309                                                                          _tdm_vblank_cb_vblank_HW, wait_info);
1310
1311         if (ret != TDM_ERROR_NONE) {
1312                 LIST_DEL(&wait_info->link);
1313                 return ret;
1314         }
1315
1316         VDB("wait(%p) waiting", wait_info);
1317
1318         return TDM_ERROR_NONE;
1319 }
1320
1321 static void
1322 _tdm_vblank_cb_vblank_SW(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data)
1323 {
1324         tdm_private_vblank *private_vblank = object;
1325         tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
1326
1327         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
1328
1329         assert(private_vblank->owner_tid == syscall(SYS_gettid));
1330
1331         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
1332                 VER("no wait_info");
1333                 return;
1334         }
1335
1336         if (!LIST_IS_EMPTY(&private_vblank->HW_wait_list))
1337                 TDM_NEVER_GET_HERE();
1338
1339         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
1340         TDM_RETURN_IF_FAIL(first_wait_info != NULL);
1341
1342         _tdm_vblank_timeout_timer_update(private_vblank, 0);
1343
1344         if (private_vblank->last_seq >= first_wait_info->target_seq)
1345                 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
1346
1347         private_vblank->last_seq = first_wait_info->target_seq;
1348         private_vblank->last_time = first_wait_info->target_time;
1349
1350         VDB("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
1351
1352         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
1353                 if (w->target_time != first_wait_info->target_time)
1354                         break;
1355
1356                 LIST_DEL(&w->link);
1357                 _tdm_vblank_valid_list_del(&w->valid_link);
1358
1359                 if (w->func) {
1360                         tdm_display_unlock(private_vblank->dpy);
1361                         w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
1362                                         TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
1363                                         w->user_data);
1364                         tdm_display_lock(private_vblank->dpy);
1365                 }
1366
1367                 free(w);
1368         }
1369 }
1370
1371 static tdm_error
1372 _tdm_vblank_cb_timeout_SW(void *user_data)
1373 {
1374         tdm_private_vblank *private_vblank = user_data;
1375         tdm_thread_cb_vblank_sw vblank_sw;
1376         tdm_error ret;
1377
1378         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(private_vblank), TDM_ERROR_OPERATION_FAILED);
1379
1380         VIN("timeout_SW -> thread-cb");
1381
1382         memset(&vblank_sw, 0, sizeof vblank_sw);
1383         vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
1384         vblank_sw.base.length = sizeof vblank_sw;
1385         vblank_sw.base.object_stamp = private_vblank->stamp;
1386         vblank_sw.base.data = NULL;
1387         vblank_sw.base.sync = 0;
1388
1389         ret = tdm_thread_cb_call(private_vblank, &vblank_sw.base);
1390         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
1391
1392         return TDM_ERROR_NONE;
1393 }
1394
1395 static tdm_error
1396 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
1397 {
1398         tdm_private_vblank *private_vblank = wait_info->private_vblank;
1399         tdm_error ret;
1400
1401         if (private_vblank->last_type != VBLANK_EVENT_TYPE_SW) {
1402                 VIN("Use SW vblank");
1403                 private_vblank->last_type = VBLANK_EVENT_TYPE_SW;
1404         }
1405
1406         if (private_vblank->last_time == 0) {
1407                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
1408                 private_vblank->last_seq = 0;
1409                 private_vblank->last_time = tdm_helper_get_time();
1410
1411                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
1412                 wait_info->target_seq = 1;
1413                 wait_info->target_time = private_vblank->last_time + 0.001;
1414
1415                 VDB("wait(%p) last(%.6f) target(%.6f) target sequence(%u)",
1416                         wait_info, private_vblank->last_time, wait_info->target_time, wait_info->target_seq);
1417         } else {
1418                 double last, prev, req, curr, target;
1419                 unsigned int skip;
1420
1421                 last = private_vblank->last_time;
1422                 req = wait_info->req_time;
1423
1424                 /* make sure that req time is bigger than last. */
1425                 if (req < last)
1426                         req = last;
1427
1428                 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1429                 prev = last + private_vblank->vblank_gap * skip;
1430
1431                 curr = tdm_helper_get_time();
1432                 target = prev + private_vblank->vblank_gap * wait_info->interval;
1433
1434                 while (target < curr)
1435                         target += private_vblank->vblank_gap;
1436
1437                 wait_info->target_seq = private_vblank->last_seq;
1438                 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1439
1440                 wait_info->target_time = target;
1441
1442                 VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
1443                         wait_info, last, req - last, prev - last, curr - last,
1444                         target, target - last, skip, wait_info->target_seq);
1445         }
1446
1447         _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
1448
1449         ret = _tdm_vblank_sw_timer_update(private_vblank);
1450         if (ret != TDM_ERROR_NONE) {
1451                 /* LCOV_EXCL_START */
1452                 LIST_DEL(&wait_info->link);
1453                 VER("couldn't update sw timer");
1454                 return ret;
1455                 /* LCOV_EXCL_STOP */
1456         }
1457
1458         return TDM_ERROR_NONE;
1459 }
1460
1461 EXTERN tdm_error
1462 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1463                                 unsigned int interval, tdm_vblank_handler func, void *user_data)
1464 {
1465         tdm_private_vblank *private_vblank = vblank;
1466         tdm_vblank_wait_info *wait_info;
1467         tdm_output_dpms dpms = TDM_OUTPUT_DPMS_OFF;
1468         unsigned int fps;
1469         tdm_error ret;
1470
1471         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1472         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1473
1474         if (private_vblank->in_create_handler) {
1475                 TDM_ERR("NOT allowed to be called in a create handler");
1476                 return TDM_ERROR_BAD_REQUEST;
1477         }
1478
1479         if (private_vblank->owner_tid != syscall(SYS_gettid)) {
1480                 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
1481                 return TDM_ERROR_BAD_REQUEST;
1482         }
1483
1484         tdm_output_get_dpms(private_vblank->output, &dpms);
1485
1486         if (!private_vblank->enable_fake) {
1487                 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
1488                         VER("can't wait a vblank: output disconnected");
1489                         return TDM_ERROR_OUTPUT_DISCONNECTED;
1490                 }
1491                 if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(dpms)) {
1492                         VER("can't wait a vblank: DPMS %s", tdm_dpms_str(dpms));
1493                         return TDM_ERROR_DPMS_OFF;
1494                 }
1495         }
1496
1497         wait_info = calloc(1, sizeof * wait_info);
1498         if (!wait_info) {
1499                 /* LCOV_EXCL_START */
1500                 VER("alloc failed");
1501                 return TDM_ERROR_OUT_OF_MEMORY;
1502                 /* LCOV_EXCL_STOP */
1503         }
1504         _tdm_vblank_update_output_info(private_vblank);
1505
1506         /* set request time to current time if 0. This function seems to be called in server side. */
1507         if (req_sec == 0 && req_usec == 0) {
1508                 double curr = tdm_helper_get_time();
1509                 req_sec = TDM_TIME_SEC(curr);
1510                 req_usec = TDM_TIME_USEC(curr);
1511         }
1512
1513         LIST_INITHEAD(&wait_info->link);
1514
1515         _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
1516
1517         wait_info->stamp = ++stamp;
1518         wait_info->req_time = TDM_TIME(req_sec, req_usec);
1519         wait_info->interval = interval;
1520         wait_info->func = func;
1521         wait_info->user_data = user_data;
1522         wait_info->private_vblank = private_vblank;
1523
1524         if (private_vblank->ignore_global_fps ||
1525                 vblank_global_fps == 0 ||
1526                 private_vblank->fps < vblank_global_fps)
1527                 fps = private_vblank->fps;
1528         else
1529                 fps = vblank_global_fps;
1530
1531         if (private_vblank->check_HW_or_SW) {
1532                 private_vblank->check_HW_or_SW = 0;
1533                 private_vblank->vblank_gap = 1.0 / fps;
1534                 private_vblank->quotient = private_vblank->vrefresh / fps;
1535         }
1536
1537         /* 1) if fps != factor of vrefresh, SW timer
1538          * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
1539          * 2) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1540          * 3) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1541          * In case of 1), we really don't need to align with HW vblank.
1542          */
1543         if (private_vblank->vrefresh % fps)
1544                 wait_info->type = VBLANK_TYPE_SW;
1545         else if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(dpms) ||
1546                          private_vblank->connection != TDM_OUTPUT_CONN_STATUS_MODE_SETTED)
1547                 wait_info->type = VBLANK_TYPE_SW_FAKE;
1548         else if (private_vblank->offset == 0)
1549                 wait_info->type = VBLANK_TYPE_HW;
1550         else
1551                 wait_info->type = VBLANK_TYPE_HW_SW;
1552
1553         if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE) {
1554                 ret = _tdm_vblank_wait_SW(wait_info);
1555                 if (ret != TDM_ERROR_NONE)
1556                         TDM_ERR("_tdm_vblank_wait_SW failed: ret(%d)", ret);
1557         } else {
1558                 ret = _tdm_vblank_wait_HW(wait_info);
1559                 if (ret != TDM_ERROR_NONE)
1560                         TDM_ERR("_tdm_vblank_wait_HW failed: ret(%d)", ret);
1561
1562                 if (ret == TDM_ERROR_OUTPUT_DISCONNECTED || ret == TDM_ERROR_DPMS_OFF) {
1563                         ret = _tdm_vblank_wait_SW(wait_info);
1564                         if (ret != TDM_ERROR_NONE)
1565                                 TDM_ERR("_tdm_vblank_wait_SW failed: ret(%d)", ret);
1566                 }
1567         }
1568
1569         if (ret != TDM_ERROR_NONE) {
1570                 /* LCOV_EXCL_START */
1571                 LIST_DEL(&wait_info->link);
1572                 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1573
1574                 tdm_display_lock(private_vblank->dpy);
1575                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1576                 tdm_display_unlock(private_vblank->dpy);
1577
1578                 free(wait_info);
1579                 return ret;
1580                 /* LCOV_EXCL_STOP */
1581         }
1582
1583         tdm_display_lock(private_vblank->dpy);
1584         _tdm_vblank_timeout_timer_update(private_vblank, 1000);
1585         tdm_display_unlock(private_vblank->dpy);
1586
1587         return TDM_ERROR_NONE;
1588 }
1589
1590 EXTERN tdm_error
1591 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1592                                         unsigned int sequence, tdm_vblank_handler func, void *user_data)
1593 {
1594         tdm_private_vblank *private_vblank = vblank;
1595         unsigned int interval;
1596
1597         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1598         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1599
1600         /* if the sequence of vblank reaches the max value, sequence can be 0. */
1601
1602         if (private_vblank->last_seq == 0) {
1603                 VWR("can't calculate interval with sequence(%u)", sequence);
1604                 interval = 1;
1605         } else if (sequence > private_vblank->last_seq ||
1606                            TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1607                 double last, curr, seq_target;
1608
1609                 last = private_vblank->last_time;
1610                 curr = tdm_helper_get_time();
1611                 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1612
1613                 /* If target is old or too close(1ms) to current, we call the handler immediately.
1614                  * 2ms? it seems too much.
1615                  */
1616                 if (seq_target < curr) {
1617                         func(vblank, TDM_ERROR_NONE, sequence,
1618                                  TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1619                                  user_data);
1620                         return TDM_ERROR_NONE;
1621                 } else if ((seq_target - curr) < 0.001) {  /* 1ms */
1622                         func(vblank, TDM_ERROR_NONE, sequence,
1623                                  TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1624                                  user_data);
1625                         return TDM_ERROR_NONE;
1626                 }
1627
1628                 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1629         } else {
1630                 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1631                 VER("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1632                 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1633                          TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1634                          user_data);
1635                 return TDM_ERROR_NONE;
1636         }
1637
1638         return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1639 }
1640
1641 /* LCOV_EXCL_START */
1642 INTERN tdm_error
1643 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1644 {
1645         tdm_private_vblank *private_vblank = vblank;
1646
1647         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1648
1649         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1650
1651         if (private_vblank->add_front == add_front)
1652                 return TDM_ERROR_NONE;
1653
1654         private_vblank->add_front = add_front;
1655
1656         return TDM_ERROR_NONE;
1657 }
1658 /* LCOV_EXCL_STOP */
1659
1660 INTERN tdm_error
1661 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1662 {
1663         tdm_private_vblank *private_vblank = vblank;
1664
1665         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1666         TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1667
1668         private_vblank->resource = resource;
1669
1670         return TDM_ERROR_NONE;
1671 }
1672
1673 INTERN double
1674 tdm_vblank_get_stamp(tdm_vblank *vblank)
1675 {
1676         tdm_private_vblank *private_vblank = vblank;
1677
1678         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1679
1680         return private_vblank->stamp;
1681 }
1682
1683 static unsigned int
1684 _tdm_vblank_get_waiting_count(tdm_private_vblank *private_vblank)
1685 {
1686         tdm_vblank_wait_info *wait_info = NULL;
1687         unsigned int count = 0;
1688
1689         LIST_FOR_EACH_ENTRY(wait_info, &private_vblank->HW_wait_list, link) {
1690                 count++;
1691         }
1692
1693         LIST_FOR_EACH_ENTRY(wait_info, &private_vblank->SW_wait_list, link) {
1694                 count++;
1695         }
1696
1697         return count;
1698 }
1699
1700 static void
1701 _tdm_vblank_get_client_information(tdm_private_vblank *private_vblank, pid_t *pid, const char **name)
1702 {
1703         struct wl_client *client;
1704
1705         if (!private_vblank->resource)
1706                 goto no_client;
1707
1708         client = wl_resource_get_client(private_vblank->resource);
1709         if (!client)
1710                 goto no_client;
1711
1712         wl_client_get_credentials(client, pid, NULL, NULL);
1713         *name = tdm_server_get_client_name(*pid);
1714
1715         return;
1716
1717 no_client:
1718         *pid = 0;
1719         *name = NULL;
1720         return;
1721 }
1722
1723 /* LCOV_EXCL_START */
1724 INTERN void
1725 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1726 {
1727         tdm_private_vblank *v = NULL;
1728         tdm_output_dpms dpms = TDM_OUTPUT_DPMS_OFF;
1729         tdm_output *output = tdm_display_get_output(dpy, 0, NULL);
1730
1731         if (output)
1732                 tdm_output_get_dpms(output, &dpms);
1733
1734         TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1735         TDM_SNPRINTF(reply, len, "* DPMS: %s\n", tdm_dpms_str(dpms));
1736         TDM_SNPRINTF(reply, len, "* global fps: %u\n", vblank_global_fps);
1737         TDM_SNPRINTF(reply, len, "----------------------------------------------------------------------------------\n");
1738         TDM_SNPRINTF(reply, len, "Name                 Type Wait Interval Sequence Fps Ignore Offset Fake Process\n");
1739         TDM_SNPRINTF(reply, len, "----------------------------------------------------------------------------------\n");
1740
1741         pthread_mutex_lock(&valid_list_lock);
1742         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1743                 const char *proc_name = NULL;
1744                 pid_t pid = 0;
1745                 unsigned int count;
1746
1747                 _tdm_vblank_get_client_information(v, &pid, &proc_name);
1748
1749                 count = _tdm_vblank_get_waiting_count(v);
1750
1751                 TDM_SNPRINTF(reply, len, "%-8s(%p) ", v->name, v);
1752                 TDM_SNPRINTF(reply, len, "%-4s ", (v->last_type == VBLANK_EVENT_TYPE_HW) ? "HW" : "SW");
1753                 TDM_SNPRINTF(reply, len, "%-4s ", (count > 0) ? "O" : " ");
1754                 TDM_SNPRINTF(reply, len, "%-8d ", v->last_interval);
1755                 TDM_SNPRINTF(reply, len, "%-8u ", v->last_seq);
1756                 TDM_SNPRINTF(reply, len, "%-3u ", v->fps);
1757                 TDM_SNPRINTF(reply, len, "%-6u ", v->ignore_global_fps);
1758                 TDM_SNPRINTF(reply, len, "%-6d ", v->offset);
1759                 TDM_SNPRINTF(reply, len, "%-4u ", v->enable_fake);
1760                 TDM_SNPRINTF(reply, len, "%s(pid:%d)\n", (proc_name) ? proc_name : "Unknown", pid);
1761         }
1762         pthread_mutex_unlock(&valid_list_lock);
1763
1764         TDM_SNPRINTF(reply, len, "\n");
1765 }
1766 /* LCOV_EXCL_STOP */
1767