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 <boram1288.park@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, valid_wait_list and create_handler_list should be protected
 162  * by valid_list_lock because tdm_vblank can be used in multi-thread.
 163  */
 164 static pthread_mutex_t valid_list_lock = PTHREAD_MUTEX_INITIALIZER;
 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);
 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         const tdm_output_mode *mode = NULL;
 381         tdm_error ret;
 382
 383         ret = tdm_output_get_conn_status(output, &connection);
 384         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 385
 386         ret = tdm_output_get_mode(output, &mode);
 387         if (ret == TDM_ERROR_NONE && mode)
 388                 vrefresh = mode->vrefresh;
 389         else
 390                 VWR("mode not setted!!!");
 391
 392         private_vblank->connection = connection;
 393         private_vblank->vrefresh = vrefresh;
 394         private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
 395
 396         if (private_vblank->fps_changeable)
 397                 private_vblank->fps = vrefresh;
 398
 399         VIN("connection(%d) vrefresh(%d) fps(%d) fps_changeable(%d)",
 400                 private_vblank->connection,
 401                 private_vblank->vrefresh, private_vblank->fps, private_vblank->fps_changeable);
 402 }
 403
 404 /* LCOV_EXCL_START */
 405 static void
 406 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
 407                                                          tdm_value value, void *user_data)
 408 {
 409         tdm_private_vblank *private_vblank = user_data;
 410
 411         TDM_RETURN_IF_FAIL(tdm_vblank_is_valid(private_vblank));
 412
 413         switch (type) {
 414         case TDM_OUTPUT_CHANGE_DPMS:
 415                 VIN("dpms %s", tdm_dpms_str(value.u32));
 416                 private_vblank->check_HW_or_SW = 1;
 417                 if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(value.u32)) {
 418                         if (private_vblank->enable_fake)
 419                                 _tdm_vblank_change_to_SW(private_vblank);
 420                         else {
 421                                 tdm_display_lock(private_vblank->dpy);
 422                                 _tdm_vblank_timeout_timer_update(private_vblank, 0);
 423                                 tdm_display_unlock(private_vblank->dpy);
 424
 425                                 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
 426                         }
 427                 }
 428                 break;
 429         case TDM_OUTPUT_CHANGE_CONNECTION:
 430                 if (private_vblank->connection == value.u32)
 431                         break;
 432                 VIN("output %s", tdm_status_str(value.u32));
 433                 _tdm_vblank_update_output_info(private_vblank);
 434                 private_vblank->check_HW_or_SW = 1;
 435                 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 436                         if (private_vblank->enable_fake)
 437                                 _tdm_vblank_change_to_SW(private_vblank);
 438                         else {
 439                                 tdm_display_lock(private_vblank->dpy);
 440                                 _tdm_vblank_timeout_timer_update(private_vblank, 0);
 441                                 tdm_display_unlock(private_vblank->dpy);
 442
 443                                 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_OUTPUT_DISCONNECTED, 1);
 444                         }
 445                 }
 446                 break;
 447         default:
 448                 break;
 449         }
 450 }
 451 /* LCOV_EXCL_STOP */
 452
 453 static tdm_error
 454 _tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
 455 {
 456         tdm_private_vblank *private_vblank = vblank;
 457
 458         if (private_vblank->fps_fixed) {
 459                 VIN("fps(%u) can't be changed", private_vblank->fps);
 460                 return TDM_ERROR_NONE;
 461         }
 462
 463         private_vblank->fps_changeable = 0;
 464
 465         if (private_vblank->fps == fps)
 466                 return TDM_ERROR_NONE;
 467
 468         private_vblank->fps = fps;
 469         private_vblank->check_HW_or_SW = 1;
 470
 471         VIN("fps(%u) changed", fps);
 472
 473         return TDM_ERROR_NONE;
 474 }
 475
 476 static tdm_error
 477 _tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
 478 {
 479         tdm_private_vblank *private_vblank = vblank;
 480
 481         if (private_vblank->ignore_global_fps == ignore)
 482                 return TDM_ERROR_NONE;
 483
 484         private_vblank->ignore_global_fps = ignore;
 485         private_vblank->check_HW_or_SW = 1;
 486
 487         VIN("ignore_global_fps(%u)", private_vblank->ignore_global_fps);
 488
 489         return TDM_ERROR_NONE;
 490 }
 491
 492 EXTERN tdm_error
 493 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
 494 {
 495         tdm_private_vblank *v = NULL;
 496         tdm_error ret = TDM_ERROR_NONE;
 497
 498         TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
 499         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 500
 501         TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
 502
 503         pthread_mutex_lock(&valid_list_lock);
 504         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 505                 struct wl_client *client;
 506                 pid_t client_pid = 0;
 507
 508                 if (!v->resource)
 509                         continue;
 510
 511                 client = wl_resource_get_client(v->resource);
 512                 if (!client)
 513                         continue;
 514
 515                 wl_client_get_credentials(client, &client_pid, NULL, NULL);
 516
 517                 if (client_pid != pid)
 518                         continue;
 519
 520                 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
 521                         if (strncmp(v->name, name, TDM_NAME_LEN))
 522                                 continue;
 523                 }
 524
 525                 ret = _tdm_vblank_set_fps(v, fps);
 526                 if (ret == TDM_ERROR_NONE)
 527                         TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
 528                 else
 529                         TDM_ERR("(pid:%u) '%s' fps changing failed: %d", pid, v->name, fps);
 530         }
 531         pthread_mutex_unlock(&valid_list_lock);
 532
 533         return TDM_ERROR_NONE;
 534 }
 535
 536 EXTERN tdm_error
 537 tdm_vblank_set_client_ignore_global_fps(unsigned int pid, const char *name, unsigned int ignore)
 538 {
 539         tdm_private_vblank *v = NULL;
 540         tdm_error ret = TDM_ERROR_NONE;
 541
 542         TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
 543
 544         TDM_INFO("pid: %u, name: %s, ignore: %u", pid, name, ignore);
 545
 546         pthread_mutex_lock(&valid_list_lock);
 547         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 548                 struct wl_client *client;
 549                 pid_t client_pid = 0;
 550
 551                 if (!v->resource)
 552                         continue;
 553
 554                 client = wl_resource_get_client(v->resource);
 555                 if (!client)
 556                         continue;
 557
 558                 wl_client_get_credentials(client, &client_pid, NULL, NULL);
 559
 560                 if (client_pid != pid)
 561                         continue;
 562
 563                 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
 564                         if (strncmp(v->name, name, TDM_NAME_LEN))
 565                                 continue;
 566                 }
 567
 568                 ret = _tdm_vblank_ignore_global_fps(v, ignore);
 569                 if (ret == TDM_ERROR_NONE)
 570                         TDM_INFO("(pid:%u) '%s' ignore changed: %u", pid, v->name, ignore);
 571                 else
 572                         TDM_ERR("(pid:%u) '%s' ignore changing failed: %u", pid, v->name, ignore);
 573         }
 574         pthread_mutex_unlock(&valid_list_lock);
 575
 576         return TDM_ERROR_NONE;
 577 }
 578
 579 EXTERN tdm_error
 580 tdm_vblank_enable_global_fps(unsigned int enable, unsigned int fps)
 581 {
 582         tdm_private_vblank *v = NULL;
 583
 584         if (enable)
 585                 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 586
 587         TDM_INFO("global fps: %s fps(%d)", (enable) ? "enabled" : "disabled", fps);
 588
 589         pthread_mutex_lock(&valid_list_lock);
 590
 591         vblank_global_fps = (enable) ? fps : 0;
 592
 593         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 594                 /* skip if vblank is created in server side */
 595                 if (!v->resource)
 596                         continue;
 597
 598                 v->check_HW_or_SW = 1;
 599         }
 600
 601         if (enable)
 602                 tdm_hwc_set_vblank(fps);
 603         else
 604                 tdm_hwc_unset_vblank();
 605
 606         pthread_mutex_unlock(&valid_list_lock);
 607
 608         return TDM_ERROR_NONE;
 609 }
 610
 611 static void
 612 _tdm_vblank_thread_cb_create(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data)
 613 {
 614         tdm_thread_cb_vblank_create *vblank_create = (tdm_thread_cb_vblank_create *)cb_base;
 615         tdm_vblank_create_handler_info *ch_info = user_data;
 616         tdm_private_vblank *private_vblank;
 617
 618         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 619
 620         assert(ch_info != NULL);
 621
 622         private_vblank = _tdm_vblank_find_object(private_display, vblank_create->vblank_stamp);
 623         if (!private_vblank) {
 624                 TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_create->vblank_stamp);
 625                 return;
 626         }
 627
 628         private_vblank->in_create_handler = 1;
 629         tdm_display_unlock(private_display);
 630         ch_info->func(private_vblank, ch_info->user_data);
 631         tdm_display_lock(private_display);
 632         private_vblank->in_create_handler = 0;
 633 }
 634
 635 static tdm_error
 636 _tdm_vblank_call_thread_cb(tdm_private_vblank *private_vblank)
 637 {
 638         tdm_thread_cb_vblank_create vblank_create;
 639         tdm_error ret;
 640
 641         memset(&vblank_create, 0, sizeof vblank_create);
 642         vblank_create.base.type = TDM_THREAD_CB_VBLANK_CREATE;
 643         vblank_create.base.length = sizeof vblank_create;
 644         vblank_create.base.object_stamp = 1;
 645         vblank_create.base.data = NULL;
 646         vblank_create.base.sync = 0;
 647         vblank_create.vblank_stamp = private_vblank->stamp;
 648
 649         ret = tdm_thread_cb_call(private_vblank->dpy, &vblank_create.base, 1);
 650         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 651
 652         return TDM_ERROR_NONE;
 653 }
 654
 655 EXTERN tdm_error
 656 tdm_vblank_add_create_handler(tdm_display *dpy, tdm_vblank_create_handler func, void *user_data)
 657 {
 658         tdm_vblank_create_handler_info *ch_info = NULL;
 659         tdm_error ret;
 660
 661         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, TDM_ERROR_INVALID_PARAMETER);
 662         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
 663
 664         pthread_mutex_lock(&valid_list_lock);
 665
 666         LIST_FOR_EACH_ENTRY(ch_info, &create_handler_list, link) {
 667                 if (ch_info->func == func && ch_info->user_data == user_data) {
 668                         TDM_ERR("can't be added twice");
 669                         pthread_mutex_unlock(&valid_list_lock);
 670                         return TDM_ERROR_BAD_REQUEST;
 671                 }
 672         }
 673
 674         ch_info = calloc(1, sizeof *ch_info);
 675         if (!ch_info) {
 676                 TDM_ERR("alloc failed: %m");
 677                 pthread_mutex_unlock(&valid_list_lock);
 678                 return TDM_ERROR_OUT_OF_MEMORY;
 679         }
 680
 681         tdm_display_lock(dpy);
 682         ret = tdm_thread_cb_add(dpy, TDM_THREAD_CB_VBLANK_CREATE, NULL, _tdm_vblank_thread_cb_create, ch_info);
 683         tdm_display_unlock(dpy);
 684
 685         if (ret != TDM_ERROR_NONE) {
 686                 TDM_ERR("tdm_thread_cb_add failed");
 687                 free(ch_info);
 688                 pthread_mutex_unlock(&valid_list_lock);
 689                 return ret;
 690         }
 691
 692         ch_info->func = func;
 693         ch_info->user_data = user_data;
 694
 695         LIST_ADDTAIL(&ch_info->link, &create_handler_list);
 696
 697         pthread_mutex_unlock(&valid_list_lock);
 698
 699         return TDM_ERROR_NONE;
 700 }
 701
 702 EXTERN void
 703 tdm_vblank_remove_create_handler(tdm_display *dpy, tdm_vblank_create_handler func, void *user_data)
 704 {
 705         tdm_vblank_create_handler_info *ch_info = NULL, *hh = NULL;
 706
 707         TDM_RETURN_IF_FAIL(dpy != NULL);
 708         TDM_RETURN_IF_FAIL(func != NULL);
 709
 710         tdm_display_lock(dpy);
 711         pthread_mutex_lock(&valid_list_lock);
 712         LIST_FOR_EACH_ENTRY_SAFE(ch_info, hh, &create_handler_list, link) {
 713                 if (ch_info->func != func || ch_info->user_data != user_data)
 714                         continue;
 715
 716                 tdm_thread_cb_remove(dpy, TDM_THREAD_CB_VBLANK_CREATE, NULL, _tdm_vblank_thread_cb_create, ch_info);
 717
 718                 LIST_DEL(&ch_info->link);
 719                 free(ch_info);
 720                 pthread_mutex_unlock(&valid_list_lock);
 721                 tdm_display_unlock(dpy);
 722                 return;
 723         }
 724         pthread_mutex_unlock(&valid_list_lock);
 725         tdm_display_unlock(dpy);
 726 }
 727
 728 static void*
 729 _tdm_vblank_find_display(tdm_private_display *private_display, double stamp)
 730 {
 731         return private_display;
 732 }
 733
 734 INTERN tdm_error
 735 tdm_vblank_init(tdm_display *dpy)
 736 {
 737         if (vblank_list_inited)
 738                 return TDM_ERROR_NONE;
 739
 740         LIST_INITHEAD(&valid_vblank_list);
 741         LIST_INITHEAD(&valid_wait_list);
 742         LIST_INITHEAD(&create_handler_list);
 743
 744         tdm_thread_cb_set_find_func(TDM_THREAD_CB_VBLANK_SW, _tdm_vblank_find_object);
 745         tdm_thread_cb_set_find_func(TDM_THREAD_CB_VBLANK_CREATE, _tdm_vblank_find_display);
 746
 747         vblank_list_inited = 1;
 748
 749         return TDM_ERROR_NONE;
 750 }
 751
 752 INTERN void
 753 tdm_vblank_deinit(tdm_display *dpy)
 754 {
 755         tdm_vblank_create_handler_info *ch_info = NULL, *hh = NULL;
 756
 757         if (!vblank_list_inited)
 758                 return;
 759
 760         if (!LIST_IS_EMPTY(&valid_vblank_list))
 761                 TDM_NEVER_GET_HERE();
 762
 763         if (!LIST_IS_EMPTY(&valid_wait_list))
 764                 TDM_NEVER_GET_HERE();
 765
 766         LIST_FOR_EACH_ENTRY_SAFE(ch_info, hh, &create_handler_list, link) {
 767                 LIST_DEL(&ch_info->link);
 768                 free(ch_info);
 769         }
 770
 771         vblank_list_inited = 0;
 772 }
 773
 774 EXTERN tdm_vblank *
 775 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
 776 {
 777         tdm_private_vblank *private_vblank;
 778         tdm_error ret;
 779
 780         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
 781         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
 782
 783         if (error)
 784                 *error = TDM_ERROR_NONE;
 785
 786         private_vblank = calloc(1, sizeof * private_vblank);
 787         if (!private_vblank) {
 788                 /* LCOV_EXCL_START */
 789                 if (error)
 790                         *error = TDM_ERROR_OUT_OF_MEMORY;
 791                 TDM_ERR("alloc failed");
 792                 return NULL;
 793                 /* LCOV_EXCL_STOP */
 794         }
 795
 796         ret = tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
 797         if (ret != TDM_ERROR_NONE) {
 798                 free(private_vblank);
 799                 if (error)
 800                         *error = TDM_ERROR_OPERATION_FAILED;
 801                 TDM_ERR("tdm_output_add_change_handler failed");
 802                 return NULL;
 803         }
 804
 805         private_vblank->stamp = ++stamp;
 806         private_vblank->owner_tid = syscall(SYS_gettid);
 807         private_vblank->dpy = dpy;
 808         private_vblank->output = output;
 809         private_vblank->check_HW_or_SW = 1;
 810         private_vblank->fps_changeable = 1;
 811         private_vblank->last_interval = -1;
 812
 813         _tdm_vblank_update_output_info(private_vblank);
 814
 815         strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
 816         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 817
 818         LIST_INITHEAD(&private_vblank->HW_wait_list);
 819         LIST_INITHEAD(&private_vblank->SW_wait_list);
 820
 821         _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
 822
 823         VIN("created. vrefresh(%d) connection(%d)",
 824                 private_vblank->vrefresh, private_vblank->connection);
 825
 826         tdm_display_lock(private_vblank->dpy);
 827         _tdm_vblank_call_thread_cb(private_vblank);
 828         tdm_display_unlock(private_vblank->dpy);
 829
 830         return (tdm_vblank *)private_vblank;
 831 }
 832
 833 EXTERN void
 834 tdm_vblank_destroy(tdm_vblank *vblank)
 835 {
 836         tdm_private_vblank *private_vblank = vblank;
 837         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 838
 839         TDM_RETURN_IF_FAIL(tdm_vblank_is_valid(vblank));
 840
 841         if (private_vblank->in_create_handler) {
 842                 TDM_ERR("NOT allowed to be called in a create handler");
 843                 return;
 844         }
 845
 846         _tdm_vblank_valid_list_del(&private_vblank->valid_link);
 847
 848         if (private_vblank->SW_timer) {
 849                 tdm_display_lock(private_vblank->dpy);
 850                 tdm_thread_cb_remove(private_vblank, TDM_THREAD_CB_VBLANK_SW, NULL, _tdm_vblank_cb_vblank_SW, NULL);
 851                 tdm_event_loop_source_remove(private_vblank->SW_timer);
 852                 tdm_display_unlock(private_vblank->dpy);
 853         }
 854
 855         tdm_output_remove_change_handler(private_vblank->output,
 856                                                                          _tdm_vblank_cb_output_change, private_vblank);
 857
 858         _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
 859
 860         if (!LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
 861                 pid_t pid;
 862                 const char *proc_name;
 863                 _tdm_vblank_get_client_information(private_vblank, &pid, &proc_name);
 864                 VER("TDM SW vblank destroyed forcely!! (pid: %u, name: %s)", pid, proc_name);
 865         }
 866
 867         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
 868                 LIST_DEL(&w->link);
 869                 _tdm_vblank_valid_list_del(&w->valid_link);
 870                 free(w);
 871         }
 872
 873         if (private_vblank->timeout_timer) {
 874                 tdm_display_lock(private_vblank->dpy);
 875                 tdm_event_loop_source_remove(private_vblank->timeout_timer);
 876                 tdm_display_unlock(private_vblank->dpy);
 877         }
 878
 879         VIN("destroyed");
 880
 881         free(private_vblank);
 882 }
 883
 884 EXTERN tdm_output *
 885 tdm_vblank_get_output(tdm_vblank *vblank, tdm_error *error)
 886 {
 887         tdm_private_vblank *private_vblank = vblank;
 888         tdm_error ret = TDM_ERROR_NONE;
 889
 890         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER, NULL);
 891
 892         if (error)
 893                 *error = TDM_ERROR_NONE;
 894
 895         return private_vblank->output;
 896 }
 897
 898 EXTERN tdm_error
 899 tdm_vblank_get_client_pid(tdm_vblank *vblank, pid_t *pid)
 900 {
 901         tdm_private_vblank *private_vblank = vblank;
 902         struct wl_client *client;
 903
 904         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 905         TDM_RETURN_VAL_IF_FAIL(pid != NULL, TDM_ERROR_INVALID_PARAMETER);
 906
 907         if (!private_vblank->resource) {
 908                 *pid = 0;
 909                 return TDM_ERROR_NONE;
 910         }
 911
 912         client = wl_resource_get_client(private_vblank->resource);
 913         if (!client) {
 914                 *pid = 0;
 915                 return TDM_ERROR_NONE;
 916         }
 917
 918         wl_client_get_credentials(client, pid, NULL, NULL);
 919
 920         return TDM_ERROR_NONE;
 921 }
 922
 923 EXTERN tdm_error
 924 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
 925 {
 926         tdm_private_vblank *private_vblank = vblank;
 927
 928         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 929
 930         if (!name)
 931                 name = TDM_VBLANK_DEFAULT_NAME;
 932
 933         strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
 934         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 935
 936         VIN("name(%s)", name);
 937
 938         return TDM_ERROR_NONE;
 939 }
 940
 941 EXTERN tdm_error
 942 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
 943 {
 944         tdm_private_vblank *private_vblank = vblank;
 945
 946         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 947         TDM_RETURN_VAL_IF_FAIL(name != NULL, TDM_ERROR_INVALID_PARAMETER);
 948
 949         *name = (const char*)private_vblank->name;
 950
 951         return TDM_ERROR_NONE;
 952 }
 953
 954 EXTERN tdm_error
 955 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
 956 {
 957         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 958         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 959
 960         return _tdm_vblank_set_fps(vblank, fps);
 961 }
 962
 963 EXTERN tdm_error
 964 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
 965 {
 966         tdm_private_vblank *private_vblank = vblank;
 967
 968         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 969         TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
 970
 971         *fps = private_vblank->fps;
 972
 973         return TDM_ERROR_NONE;
 974 }
 975
 976 EXTERN tdm_error
 977 tdm_vblank_set_fixed_fps(tdm_vblank *vblank, unsigned int fps)
 978 {
 979         tdm_private_vblank *private_vblank = vblank;
 980
 981         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
 982         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 983
 984         private_vblank->fps_changeable = 0;
 985         private_vblank->fps_fixed = 1;
 986
 987         if (private_vblank->fps == fps)
 988                 return TDM_ERROR_NONE;
 989
 990         private_vblank->fps = fps;
 991         private_vblank->check_HW_or_SW = 1;
 992
 993         VIN("fps(%u) fixed", fps);
 994
 995         return TDM_ERROR_NONE;
 996 }
 997
 998 EXTERN tdm_error
 999 tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
1000 {
1001         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1002
1003         return _tdm_vblank_ignore_global_fps(vblank, ignore);
1004 }
1005
1006 EXTERN tdm_error
1007 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
1008 {
1009         tdm_private_vblank *private_vblank = vblank;
1010
1011         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1012         TDM_RETURN_VAL_IF_FAIL(offset >= 0, TDM_ERROR_INVALID_PARAMETER);
1013
1014         if (private_vblank->offset == offset)
1015                 return TDM_ERROR_NONE;
1016
1017         private_vblank->offset = offset;
1018         private_vblank->check_HW_or_SW = 1;
1019
1020         VIN("offset(%u)", private_vblank->offset);
1021
1022         return TDM_ERROR_NONE;
1023 }
1024
1025 EXTERN tdm_error
1026 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
1027 {
1028         tdm_private_vblank *private_vblank = vblank;
1029
1030         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1031         TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
1032
1033         *offset = private_vblank->offset;
1034
1035         return TDM_ERROR_NONE;
1036 }
1037
1038 EXTERN tdm_error
1039 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
1040 {
1041         tdm_private_vblank *private_vblank = vblank;
1042
1043         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1044
1045         if (private_vblank->enable_fake == enable_fake)
1046                 return TDM_ERROR_NONE;
1047
1048         private_vblank->enable_fake = enable_fake;
1049
1050         VIN("enable_fake(%u)", private_vblank->enable_fake);
1051
1052         return TDM_ERROR_NONE;
1053 }
1054
1055 EXTERN tdm_error
1056 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
1057 {
1058         tdm_private_vblank *private_vblank = vblank;
1059
1060         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1061         TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
1062
1063         *enable_fake = private_vblank->enable_fake;
1064
1065         return TDM_ERROR_NONE;
1066 }
1067
1068 static tdm_error
1069 _tdm_vblank_timeout_timer_cb(void *user_data)
1070 {
1071         tdm_private_vblank *private_vblank = user_data;
1072         tdm_vblank_wait_info *w = NULL;
1073         pid_t pid;
1074         const char *proc_name;
1075
1076         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
1077
1078         _tdm_vblank_get_client_information(private_vblank, &pid, &proc_name);
1079
1080         VER("TDM vblank TIMEOUT!! (pid: %u, name: %s)", pid, proc_name);
1081         VER("quotient(%u) last_seq(%u) last_time(%.6f)", private_vblank->quotient, private_vblank->last_seq, private_vblank->last_time);
1082
1083         LIST_FOR_EACH_ENTRY(w, &private_vblank->HW_wait_list, link) {
1084                 VER("wait_info(%p) req_time(%.6f) target_seq(%u) interval(%u) hw_interval(%d)",
1085                         w, w->req_time, w->target_seq, w->interval, w->hw_interval);
1086                 tdm_output_vblank_print_wait_information(private_vblank->output, w);
1087         }
1088
1089         LIST_FOR_EACH_ENTRY(w, &private_vblank->SW_wait_list, link) {
1090                 VER("wait_info(%p) req_time(%.6f) target_time(%.6f) target_seq(%u) interval(%u)",
1091                         w, w->req_time, w->target_time, w->target_seq, w->interval);
1092         }
1093
1094         return TDM_ERROR_NONE;
1095 }
1096
1097 static void
1098 _tdm_vblank_timeout_timer_update(tdm_private_vblank *private_vblank, int ms_delay)
1099 {
1100         tdm_error ret;
1101
1102         if (!private_vblank->timeout_timer) {
1103                 private_vblank->timeout_timer =
1104                         tdm_event_loop_add_timer_handler(private_vblank->dpy,
1105                                                                                          _tdm_vblank_timeout_timer_cb,
1106                                                                                          private_vblank,
1107                                                                                          &ret);
1108                 if (!private_vblank->timeout_timer) {
1109                         VER("couldn't add timer");
1110                         return;
1111                 }
1112                 VIN("Create Timeout timer");
1113         }
1114
1115         ret = tdm_event_loop_source_timer_update(private_vblank->timeout_timer, ms_delay);
1116         if (ret != TDM_ERROR_NONE) {
1117                 VER("couldn't update timer");
1118                 return;
1119         }
1120
1121         if (ms_delay != 0)
1122                 VDB("timeout timer updated");
1123         else
1124                 VDB("timeout timer disabled");
1125 }
1126
1127 static tdm_error
1128 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
1129 {
1130         tdm_vblank_wait_info *first_wait_info = NULL;
1131         double curr, target;
1132         int ms_delay;
1133         tdm_error ret;
1134
1135         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
1136                 VER("no wait_info");
1137                 return TDM_ERROR_OPERATION_FAILED;
1138         }
1139
1140         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
1141         curr = tdm_helper_get_time();
1142         target = first_wait_info->target_time;
1143
1144         /* ms_delay should be more that 1 */
1145         if (target < curr)
1146                 ms_delay = 1;
1147         else
1148                 ms_delay = ceil((target - curr) * 1000.0);
1149
1150         if (ms_delay < 1)
1151                 ms_delay = 1;
1152
1153         if (ms_delay > 5000)
1154                 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
1155         else
1156                 VDB("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
1157
1158         tdm_display_lock(private_vblank->dpy);
1159
1160         if (!private_vblank->SW_timer) {
1161                 private_vblank->SW_timer =
1162                         tdm_event_loop_add_timer_handler(private_vblank->dpy,
1163                                                                                          _tdm_vblank_cb_timeout_SW,
1164                                                                                          private_vblank,
1165                                                                                          &ret);
1166                 if (!private_vblank->SW_timer) {
1167                         tdm_display_unlock(private_vblank->dpy);
1168                         VER("couldn't add timer");
1169                         return ret;
1170                 }
1171
1172                 ret = tdm_thread_cb_add(private_vblank, TDM_THREAD_CB_VBLANK_SW, NULL, _tdm_vblank_cb_vblank_SW, NULL);
1173                 if (ret != TDM_ERROR_NONE) {
1174                         tdm_event_loop_source_remove(private_vblank->SW_timer);
1175                         private_vblank->SW_timer = NULL;
1176                         tdm_display_unlock(private_vblank->dpy);
1177                         VER("couldn't add thread_cb");
1178                         return ret;
1179                 }
1180
1181                 VIN("Create SW timer");
1182         }
1183
1184         private_vblank->last_interval = ms_delay;
1185
1186         ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
1187         if (ret != TDM_ERROR_NONE) {
1188                 /* LCOV_EXCL_START */
1189                 tdm_display_unlock(private_vblank->dpy);
1190                 VER("couldn't update timer");
1191                 return ret;
1192                 /* LCOV_EXCL_STOP */
1193         }
1194
1195         tdm_display_unlock(private_vblank->dpy);
1196
1197         return TDM_ERROR_NONE;
1198 }
1199
1200 static void
1201 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
1202                                                  unsigned int tv_sec, unsigned int tv_usec,
1203                                                  void *user_data)
1204 {
1205         tdm_vblank_wait_info *wait_info = user_data;
1206         tdm_private_vblank *private_vblank;
1207
1208         if (!_tdm_vblank_check_valid_wait(wait_info)) {
1209                 TDM_ERR("can't find wait(%p) from valid_wait_list", wait_info);
1210                 return;
1211         }
1212
1213         private_vblank = wait_info->private_vblank;
1214         TDM_RETURN_IF_FAIL(tdm_vblank_is_valid(private_vblank));
1215
1216         assert(private_vblank->owner_tid == syscall(SYS_gettid));
1217
1218         if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
1219                 VER("can't find wait(%p)", wait_info);
1220                 return;
1221         }
1222
1223         if (wait_info->type == VBLANK_TYPE_HW_SW) {
1224                 tdm_error ret;
1225
1226                 LIST_DEL(&wait_info->link);
1227
1228                 /* kernel sends the wrong time of first vblank event. and the time of
1229                  * second vblank is correct.
1230                  */
1231                 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
1232                 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
1233
1234                 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
1235
1236                 ret = _tdm_vblank_sw_timer_update(private_vblank);
1237
1238                 /* wait_info will be freed in _tdm_vblank_cb_timeout_SW() */
1239                 if (ret == TDM_ERROR_NONE) {
1240                         VIN("wait(%p) SW timer", wait_info);
1241                         return;
1242                 }
1243
1244                 VER("couldn't update sw timer");
1245         }
1246
1247         tdm_display_lock(private_vblank->dpy);
1248         _tdm_vblank_timeout_timer_update(private_vblank, 0);
1249         tdm_display_unlock(private_vblank->dpy);
1250
1251         LIST_DEL(&wait_info->link);
1252         _tdm_vblank_valid_list_del(&wait_info->valid_link);
1253
1254         /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
1255          * We need to prohibit that last_time becomes zero because "last_time == 0" means
1256          * that a tdm_vblank object is just created and doesn't have the first vblank event.
1257          * If last_time becomes 0, it would make issue.
1258          */
1259         if (tv_sec == 0 && tv_usec == 0) {
1260                 double curr = tdm_helper_get_time();
1261                 tv_sec = TDM_TIME_SEC(curr);
1262                 tv_usec = TDM_TIME_USEC(curr);
1263         }
1264
1265         private_vblank->last_seq = wait_info->target_seq;
1266         private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
1267
1268         VDB("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
1269
1270         if (tdm_ttrace_module & TDM_TTRACE_VBLANK)
1271                 TDM_TRACE_ASYNC_END((int)wait_info->req_time, "TDM_Vblank:%u", (unsigned int)private_vblank->stamp);
1272
1273         if (wait_info->func)
1274                 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
1275                                                 tv_sec, tv_usec, wait_info->user_data);
1276
1277         free(wait_info);
1278 }
1279
1280 static tdm_error
1281 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
1282 {
1283         tdm_private_vblank *private_vblank = wait_info->private_vblank;
1284         int hw_interval;
1285         tdm_error ret;
1286
1287         if (private_vblank->last_type != VBLANK_EVENT_TYPE_HW) {
1288                 VIN("Use HW vblank");
1289                 private_vblank->last_type = VBLANK_EVENT_TYPE_HW;
1290         }
1291
1292         _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
1293
1294         if (private_vblank->last_time == 0) {
1295                 hw_interval = wait_info->interval * private_vblank->quotient;
1296
1297                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
1298                 private_vblank->last_seq = 0;
1299                 private_vblank->last_time = tdm_helper_get_time();
1300
1301                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
1302                 wait_info->target_seq = 1;
1303
1304                 VDB("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
1305                         wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
1306         } else {
1307                 double last, prev, req, curr, target;
1308                 unsigned int skip;
1309
1310                 last = private_vblank->last_time;
1311                 req = wait_info->req_time;
1312
1313                 /* make sure that req time is bigger than last. */
1314                 if (req < last)
1315                         req = last;
1316
1317                 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1318                 prev = last + private_vblank->vblank_gap * skip;
1319
1320                 curr = tdm_helper_get_time();
1321                 target = last;
1322                 while (target < curr)
1323                         target += (private_vblank->vblank_gap * wait_info->interval);
1324
1325                 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
1326
1327                 wait_info->target_seq = private_vblank->last_seq;
1328                 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1329
1330                 if (hw_interval > 300)
1331                         VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
1332                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
1333                                 skip, hw_interval, wait_info->target_seq);
1334                 else
1335                         VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
1336                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
1337                                 skip, hw_interval, wait_info->target_seq);
1338         }
1339
1340         private_vblank->last_interval = hw_interval;
1341         wait_info->hw_interval = hw_interval;
1342
1343         if (tdm_ttrace_module & TDM_TTRACE_VBLANK)
1344                 TDM_TRACE_ASYNC_BEGIN((int)wait_info->req_time, "TDM_Vblank:%u", (unsigned int)private_vblank->stamp);
1345
1346         if (private_vblank->add_front)
1347                 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
1348                                                                                            _tdm_vblank_cb_vblank_HW, wait_info);
1349         else
1350                 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
1351                                                                          _tdm_vblank_cb_vblank_HW, wait_info);
1352
1353         if (ret != TDM_ERROR_NONE) {
1354                 LIST_DEL(&wait_info->link);
1355                 return ret;
1356         }
1357
1358         VDB("wait(%p) waiting", wait_info);
1359
1360         return TDM_ERROR_NONE;
1361 }
1362
1363 static void
1364 _tdm_vblank_cb_vblank_SW(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data)
1365 {
1366         tdm_private_vblank *private_vblank = object;
1367         tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
1368
1369         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
1370
1371         assert(private_vblank->owner_tid == syscall(SYS_gettid));
1372
1373         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
1374                 VER("no wait_info");
1375                 return;
1376         }
1377
1378         if (!LIST_IS_EMPTY(&private_vblank->HW_wait_list))
1379                 TDM_NEVER_GET_HERE();
1380
1381         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
1382         TDM_RETURN_IF_FAIL(first_wait_info != NULL);
1383
1384         _tdm_vblank_timeout_timer_update(private_vblank, 0);
1385
1386         if (private_vblank->last_seq >= first_wait_info->target_seq)
1387                 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
1388
1389         private_vblank->last_seq = first_wait_info->target_seq;
1390         private_vblank->last_time = first_wait_info->target_time;
1391
1392         VDB("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
1393
1394         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
1395                 if (w->target_time != first_wait_info->target_time)
1396                         break;
1397
1398                 LIST_DEL(&w->link);
1399                 _tdm_vblank_valid_list_del(&w->valid_link);
1400
1401                 if (w->func) {
1402                         tdm_display_unlock(private_vblank->dpy);
1403                         w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
1404                                         TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
1405                                         w->user_data);
1406                         tdm_display_lock(private_vblank->dpy);
1407                 }
1408
1409                 free(w);
1410         }
1411 }
1412
1413 static tdm_error
1414 _tdm_vblank_cb_timeout_SW(void *user_data)
1415 {
1416         tdm_private_vblank *private_vblank = user_data;
1417         tdm_thread_cb_vblank_sw vblank_sw;
1418         tdm_error ret;
1419
1420         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(private_vblank), TDM_ERROR_OPERATION_FAILED);
1421
1422         VIN("timeout_SW -> thread-cb");
1423
1424         memset(&vblank_sw, 0, sizeof vblank_sw);
1425         vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
1426         vblank_sw.base.length = sizeof vblank_sw;
1427         vblank_sw.base.object_stamp = private_vblank->stamp;
1428         vblank_sw.base.data = NULL;
1429         vblank_sw.base.sync = 0;
1430
1431         ret = tdm_thread_cb_call(private_vblank, &vblank_sw.base, 1);
1432         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
1433
1434         return TDM_ERROR_NONE;
1435 }
1436
1437 static tdm_error
1438 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
1439 {
1440         tdm_private_vblank *private_vblank = wait_info->private_vblank;
1441         tdm_error ret;
1442         double last, prev, req, curr, target;
1443         unsigned int skip;
1444
1445         if (private_vblank->last_type != VBLANK_EVENT_TYPE_SW) {
1446                 tdm_output_dpms dpms;
1447
1448                 tdm_output_get_dpms(private_vblank->output, &dpms);
1449
1450                 VIN("Use SW vblank. connection(%s), dpms(%s), vrefresh(%d), fps(%d), offset(%d)",
1451                         tdm_status_str(private_vblank->connection), tdm_dpms_str(dpms),
1452                         private_vblank->vrefresh, private_vblank->fps, private_vblank->offset);
1453                 private_vblank->last_type = VBLANK_EVENT_TYPE_SW;
1454         }
1455
1456         if (private_vblank->last_time == 0) {
1457                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
1458                 private_vblank->last_seq = 0;
1459                 private_vblank->last_time = tdm_helper_get_time() - private_vblank->vblank_gap;
1460
1461                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
1462                 wait_info->target_seq = 1;
1463         }
1464
1465         last = private_vblank->last_time;
1466         req = wait_info->req_time;
1467
1468         /* make sure that req time is bigger than last. */
1469         if (req < last)
1470                 req = last;
1471
1472         skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1473         prev = last + private_vblank->vblank_gap * skip;
1474
1475         curr = tdm_helper_get_time();
1476         target = prev + private_vblank->vblank_gap * wait_info->interval;
1477
1478         while (target < curr)
1479                 target += private_vblank->vblank_gap;
1480
1481         wait_info->target_seq = private_vblank->last_seq;
1482         wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1483
1484         wait_info->target_time = target + (double)(private_vblank->offset) / 1000;
1485
1486         VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
1487                 wait_info, last, req - last, prev - last, curr - last,
1488                 target, target - last, skip, wait_info->target_seq);
1489
1490         _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
1491
1492         ret = _tdm_vblank_sw_timer_update(private_vblank);
1493         if (ret != TDM_ERROR_NONE) {
1494                 /* LCOV_EXCL_START */
1495                 LIST_DEL(&wait_info->link);
1496                 VER("couldn't update sw timer");
1497                 return ret;
1498                 /* LCOV_EXCL_STOP */
1499         }
1500
1501         return TDM_ERROR_NONE;
1502 }
1503
1504 EXTERN tdm_error
1505 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1506                                 unsigned int interval, tdm_vblank_handler func, void *user_data)
1507 {
1508         tdm_private_vblank *private_vblank = vblank;
1509         tdm_vblank_wait_info *wait_info;
1510         tdm_output_dpms dpms = TDM_OUTPUT_DPMS_OFF;
1511         unsigned int fps;
1512         tdm_error ret;
1513
1514         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1515         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1516         TDM_RETURN_VAL_IF_FAIL(interval > 0, TDM_ERROR_INVALID_PARAMETER);
1517
1518         if (private_vblank->in_create_handler) {
1519                 TDM_ERR("NOT allowed to be called in a create handler");
1520                 return TDM_ERROR_BAD_REQUEST;
1521         }
1522
1523         if (private_vblank->owner_tid != syscall(SYS_gettid)) {
1524                 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
1525                 return TDM_ERROR_BAD_REQUEST;
1526         }
1527
1528         tdm_output_get_dpms(private_vblank->output, &dpms);
1529
1530         if (!private_vblank->enable_fake) {
1531                 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
1532                         VER("can't wait a vblank: output disconnected");
1533                         return TDM_ERROR_OUTPUT_DISCONNECTED;
1534                 }
1535                 if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(dpms)) {
1536                         VER("can't wait a vblank: DPMS %s", tdm_dpms_str(dpms));
1537                         return TDM_ERROR_DPMS_OFF;
1538                 }
1539         }
1540
1541         wait_info = calloc(1, sizeof * wait_info);
1542         if (!wait_info) {
1543                 /* LCOV_EXCL_START */
1544                 VER("alloc failed");
1545                 return TDM_ERROR_OUT_OF_MEMORY;
1546                 /* LCOV_EXCL_STOP */
1547         }
1548         _tdm_vblank_update_output_info(private_vblank);
1549
1550         /* set request time to current time if 0. This function seems to be called in server side. */
1551         if (req_sec == 0 && req_usec == 0) {
1552                 double curr = tdm_helper_get_time();
1553                 req_sec = TDM_TIME_SEC(curr);
1554                 req_usec = TDM_TIME_USEC(curr);
1555         }
1556
1557         LIST_INITHEAD(&wait_info->link);
1558
1559         _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
1560
1561         wait_info->stamp = ++stamp;
1562         wait_info->req_time = TDM_TIME(req_sec, req_usec);
1563         wait_info->interval = interval;
1564         wait_info->func = func;
1565         wait_info->user_data = user_data;
1566         wait_info->private_vblank = private_vblank;
1567
1568         if (!private_vblank->resource ||
1569                 private_vblank->ignore_global_fps ||
1570                 vblank_global_fps == 0 ||
1571                 private_vblank->fps < vblank_global_fps)
1572                 fps = private_vblank->fps;
1573         else
1574                 fps = vblank_global_fps;
1575
1576         if (private_vblank->check_HW_or_SW) {
1577                 private_vblank->check_HW_or_SW = 0;
1578                 private_vblank->vblank_gap = 1.0 / fps;
1579                 private_vblank->quotient = private_vblank->vrefresh / fps;
1580         }
1581
1582         /* 1) if fps != factor of vrefresh, SW timer
1583          * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
1584          * 3) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1585          * 4) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1586          * In case of 1), we really don't need to align with HW vblank.
1587          */
1588         if (private_vblank->vrefresh % fps)
1589                 wait_info->type = VBLANK_TYPE_SW;
1590         else if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(dpms) ||
1591                          private_vblank->connection != TDM_OUTPUT_CONN_STATUS_MODE_SETTED)
1592                 wait_info->type = VBLANK_TYPE_SW_FAKE;
1593         else if (private_vblank->offset == 0)
1594                 wait_info->type = VBLANK_TYPE_HW;
1595         else
1596                 wait_info->type = VBLANK_TYPE_HW_SW;
1597
1598         if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE) {
1599                 ret = _tdm_vblank_wait_SW(wait_info);
1600                 if (ret != TDM_ERROR_NONE)
1601                         TDM_ERR("_tdm_vblank_wait_SW failed: ret(%d)", ret);
1602         } else {
1603                 ret = _tdm_vblank_wait_HW(wait_info);
1604                 if (ret != TDM_ERROR_NONE)
1605                         TDM_ERR("_tdm_vblank_wait_HW failed: ret(%d)", ret);
1606
1607                 if (ret == TDM_ERROR_OUTPUT_DISCONNECTED || ret == TDM_ERROR_DPMS_OFF) {
1608                         ret = _tdm_vblank_wait_SW(wait_info);
1609                         if (ret != TDM_ERROR_NONE)
1610                                 TDM_ERR("_tdm_vblank_wait_SW failed: ret(%d)", ret);
1611                 }
1612         }
1613
1614         if (ret != TDM_ERROR_NONE) {
1615                 /* LCOV_EXCL_START */
1616                 LIST_DEL(&wait_info->link);
1617                 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1618
1619                 tdm_display_lock(private_vblank->dpy);
1620                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1621                 tdm_display_unlock(private_vblank->dpy);
1622
1623                 free(wait_info);
1624                 return ret;
1625                 /* LCOV_EXCL_STOP */
1626         }
1627
1628         tdm_display_lock(private_vblank->dpy);
1629         _tdm_vblank_timeout_timer_update(private_vblank, 1000);
1630         tdm_display_unlock(private_vblank->dpy);
1631
1632         return TDM_ERROR_NONE;
1633 }
1634
1635 EXTERN tdm_error
1636 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1637                                         unsigned int sequence, tdm_vblank_handler func, void *user_data)
1638 {
1639         tdm_private_vblank *private_vblank = vblank;
1640         unsigned int interval;
1641
1642         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1643         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1644
1645         /* if the sequence of vblank reaches the max value, sequence can be 0. */
1646
1647         if (private_vblank->last_seq == 0) {
1648                 VWR("can't calculate interval with sequence(%u)", sequence);
1649                 interval = 1;
1650         } else if (sequence > private_vblank->last_seq ||
1651                            TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1652                 double last, curr, seq_target;
1653
1654                 last = private_vblank->last_time;
1655                 curr = tdm_helper_get_time();
1656                 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1657
1658                 /* If target is old or too close(1ms) to current, we call the handler immediately.
1659                  * 2ms? it seems too much.
1660                  */
1661                 if (seq_target < curr) {
1662                         func(vblank, TDM_ERROR_NONE, sequence,
1663                                  TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1664                                  user_data);
1665                         return TDM_ERROR_NONE;
1666                 } else if ((seq_target - curr) < 0.001) {  /* 1ms */
1667                         func(vblank, TDM_ERROR_NONE, sequence,
1668                                  TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1669                                  user_data);
1670                         return TDM_ERROR_NONE;
1671                 }
1672
1673                 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1674         } else {
1675                 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1676                 VER("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1677                 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1678                          TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1679                          user_data);
1680                 return TDM_ERROR_NONE;
1681         }
1682
1683         return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1684 }
1685
1686 /* LCOV_EXCL_START */
1687 INTERN tdm_error
1688 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1689 {
1690         tdm_private_vblank *private_vblank = vblank;
1691
1692         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1693
1694         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1695
1696         if (private_vblank->add_front == add_front)
1697                 return TDM_ERROR_NONE;
1698
1699         private_vblank->add_front = add_front;
1700
1701         return TDM_ERROR_NONE;
1702 }
1703 /* LCOV_EXCL_STOP */
1704
1705 INTERN tdm_error
1706 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1707 {
1708         tdm_private_vblank *private_vblank = vblank;
1709
1710         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1711         TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1712
1713         private_vblank->resource = resource;
1714
1715         return TDM_ERROR_NONE;
1716 }
1717
1718 INTERN double
1719 tdm_vblank_get_stamp(tdm_vblank *vblank)
1720 {
1721         tdm_private_vblank *private_vblank = vblank;
1722
1723         TDM_RETURN_VAL_IF_FAIL(tdm_vblank_is_valid(vblank), TDM_ERROR_INVALID_PARAMETER);
1724
1725         return private_vblank->stamp;
1726 }
1727
1728 static unsigned int
1729 _tdm_vblank_get_waiting_count(tdm_private_vblank *private_vblank)
1730 {
1731         tdm_vblank_wait_info *wait_info = NULL;
1732         unsigned int count = 0;
1733
1734         LIST_FOR_EACH_ENTRY(wait_info, &private_vblank->HW_wait_list, link) {
1735                 count++;
1736         }
1737
1738         LIST_FOR_EACH_ENTRY(wait_info, &private_vblank->SW_wait_list, link) {
1739                 count++;
1740         }
1741
1742         return count;
1743 }
1744
1745 static void
1746 _tdm_vblank_get_client_information(tdm_private_vblank *private_vblank, pid_t *pid, const char **name)
1747 {
1748         struct wl_client *client;
1749
1750         if (!private_vblank->resource)
1751                 goto no_client;
1752
1753         client = wl_resource_get_client(private_vblank->resource);
1754         if (!client)
1755                 goto no_client;
1756
1757         wl_client_get_credentials(client, pid, NULL, NULL);
1758         *name = tdm_server_get_client_name(*pid);
1759
1760         return;
1761
1762 no_client:
1763         *pid = 0;
1764         *name = NULL;
1765         return;
1766 }
1767
1768 /* LCOV_EXCL_START */
1769 INTERN void
1770 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1771 {
1772         tdm_private_vblank *v = NULL;
1773         tdm_output_dpms dpms = TDM_OUTPUT_DPMS_OFF;
1774         tdm_output *output = tdm_display_get_output(dpy, 0, NULL);
1775
1776         if (output)
1777                 tdm_output_get_dpms(output, &dpms);
1778
1779         TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1780         TDM_SNPRINTF(reply, len, "* DPMS: %s\n", tdm_dpms_str(dpms));
1781         TDM_SNPRINTF(reply, len, "* global fps: %u\n", vblank_global_fps);
1782         TDM_SNPRINTF(reply, len, "----------------------------------------------------------------------------------\n");
1783         TDM_SNPRINTF(reply, len, "Name                 Type Wait Interval Sequence Fps Ignore Offset Fake Process\n");
1784         TDM_SNPRINTF(reply, len, "----------------------------------------------------------------------------------\n");
1785
1786         pthread_mutex_lock(&valid_list_lock);
1787         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1788                 const char *proc_name = NULL;
1789                 pid_t pid = 0;
1790                 unsigned int count;
1791
1792                 _tdm_vblank_get_client_information(v, &pid, &proc_name);
1793
1794                 count = _tdm_vblank_get_waiting_count(v);
1795
1796                 TDM_SNPRINTF(reply, len, "%-8s(%p) ", v->name, v);
1797                 TDM_SNPRINTF(reply, len, "%-4s ", (v->last_type == VBLANK_EVENT_TYPE_HW) ? "HW" : "SW");
1798                 TDM_SNPRINTF(reply, len, "%-4s ", (count > 0) ? "O" : " ");
1799                 TDM_SNPRINTF(reply, len, "%-8d ", v->last_interval);
1800                 TDM_SNPRINTF(reply, len, "%-8u ", v->last_seq);
1801                 TDM_SNPRINTF(reply, len, "%-3u ", v->fps);
1802                 TDM_SNPRINTF(reply, len, "%-6u ", v->ignore_global_fps);
1803                 TDM_SNPRINTF(reply, len, "%-6d ", v->offset);
1804                 TDM_SNPRINTF(reply, len, "%-4u ", v->enable_fake);
1805                 TDM_SNPRINTF(reply, len, "%s(pid:%d)\n", (proc_name) ? proc_name : "Unknown", pid);
1806         }
1807         pthread_mutex_unlock(&valid_list_lock);
1808
1809         TDM_SNPRINTF(reply, len, "\n");
1810 }
1811 /* LCOV_EXCL_STOP */
1812