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