src/tdm_private.h

   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 #ifndef _TDM_PRIVATE_H_
  37 #define _TDM_PRIVATE_H_
  38
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <strings.h>
  42 #include <stdlib.h>
  43 #include <pthread.h>
  44 #include <errno.h>
  45 #include <unistd.h>
  46 #include <limits.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49 #include <fcntl.h>
  50 #include <dlfcn.h>
  51 #include <dirent.h>
  52 #include <poll.h>
  53 #include <sys/syscall.h>
  54 #include <sys/types.h>
  55 #include <math.h>
  56
  57 #include <tbm_bufmgr.h>
  58 #include <tbm_surface_queue.h>
  59
  60 #include "tdm_backend.h"
  61 #include "tdm_log.h"
  62 #include "tdm_list.h"
  63 #include "tdm_macro.h"
  64
  65 #ifdef __cplusplus
  66 extern "C" {
  67 #endif
  68
  69 //#define INIT_BUFMGR
  70
  71 /**
  72  * @file tdm_private.h
  73  * @brief The private header file for a frontend library
  74  */
  75
  76 enum {
  77         TDM_DEBUG_NONE,
  78         TDM_DEBUG_BUFFER    = (1 << 0),
  79         TDM_DEBUG_MUTEX     = (1 << 1),
  80         TDM_DEBUG_THREAD    = (1 << 2),
  81         TDM_DEBUG_SERVER    = (1 << 3),
  82         TDM_DEBUG_VBLANK    = (1 << 4),
  83         TDM_DEBUG_COMMIT    = (1 << 5),
  84 };
  85
  86 extern int tdm_debug_module;
  87 extern int tdm_debug_dump;
  88
  89 #ifdef HAVE_TTRACE
  90 #include <ttrace.h>
  91 #define TDM_TRACE_BEGIN(NAME) traceBegin(TTRACE_TAG_GRAPHICS, "TDM:"#NAME)
  92 #define TDM_TRACE_END() traceEnd(TTRACE_TAG_GRAPHICS)
  93 #define TDM_TRACE_COUNT(NAME, COUNT) traceCounter(TTRACE_TAG_GRAPHICS, COUNT, "TDM:"#NAME)
  94 #define TDM_TRACE_MARK(NAME) traceMark(TTRACE_TAG_GRAPHICS, "TDM:"#NAME)
  95 #else
  96 #define TDM_TRACE_BEGIN(NAME)
  97 #define TDM_TRACE_END()
  98 #define TDM_TRACE_COUNT(NAME, COUNT)
  99 #define TDM_TRACE_MARK(NAME)
 100 #endif
 101
 102 typedef enum {
 103         TDM_CAPTURE_TARGET_OUTPUT,
 104         TDM_CAPTURE_TARGET_LAYER,
 105 } tdm_capture_target;
 106
 107 enum {
 108         TDM_DUMP_FLAG_LAYER   = (1 << 0),
 109         TDM_DUMP_FLAG_PP      = (1 << 1),
 110         TDM_DUMP_FLAG_CAPTURE = (1 << 2),
 111 };
 112
 113 #define TDM_DUMP_DIR    "/tmp"
 114
 115 typedef enum {
 116         TDM_COMMIT_TYPE_NONE,
 117         TDM_COMMIT_TYPE_OUTPUT,
 118         TDM_COMMIT_TYPE_LAYER,
 119 } tdm_commit_type;
 120
 121 typedef struct _tdm_private_display tdm_private_display;
 122 typedef struct _tdm_private_output tdm_private_output;
 123 typedef struct _tdm_private_layer tdm_private_layer;
 124 typedef struct _tdm_private_pp tdm_private_pp;
 125 typedef struct _tdm_private_capture tdm_private_capture;
 126 typedef struct _tdm_private_loop tdm_private_loop;
 127 typedef struct _tdm_private_server tdm_private_server;
 128 typedef struct _tdm_private_thread tdm_private_thread;
 129 typedef struct _tdm_private_vblank_handler tdm_private_vblank_handler;
 130 typedef struct _tdm_private_output_commit_handler tdm_private_output_commit_handler;
 131 typedef struct _tdm_private_layer_commit_handler tdm_private_layer_commit_handler;
 132 typedef struct _tdm_private_change_handler tdm_private_change_handler;
 133 typedef struct _tdm_private_layer_buffer tdm_private_layer_buffer;
 134
 135 struct _tdm_private_display {
 136         pthread_mutex_t lock;
 137         unsigned int init_count;
 138
 139         /* backend module info */
 140         void *module;
 141         tdm_backend_module *module_data;
 142         tdm_backend_data *bdata;
 143
 144 #ifdef INIT_BUFMGR
 145         tbm_bufmgr bufmgr;
 146 #endif
 147
 148         /* backend function */
 149         tdm_display_capability capabilities;
 150         tdm_func_display func_display;
 151         tdm_func_output func_output;
 152         tdm_func_layer func_layer;
 153         tdm_func_pp func_pp;
 154         tdm_func_capture func_capture;
 155
 156         /* backend capability */
 157         tdm_caps_display caps_display;
 158         tdm_caps_pp caps_pp;
 159         tdm_caps_capture caps_capture;
 160
 161         /* output, pp list */
 162         struct list_head output_list;
 163         struct list_head pp_list;
 164         struct list_head capture_list;
 165
 166         void **outputs_ptr;
 167
 168         /* for event handling */
 169         tdm_private_loop *private_loop;
 170
 171         /* output order */
 172         tdm_output **outputs;
 173
 174         /* calling a output commit per a vblank */
 175         int commit_per_vblank;
 176         tdm_commit_type commit_type;
 177
 178         int print_fps;
 179 };
 180
 181 struct _tdm_private_output {
 182         struct list_head link;
 183
 184         int index;
 185         double stamp;
 186
 187         tdm_private_display *private_display;
 188
 189         tdm_caps_output caps;
 190         tdm_output *output_backend;
 191
 192         unsigned int pipe;
 193         tdm_output_dpms current_dpms_value;
 194         const tdm_output_mode *current_mode;
 195
 196         int regist_vblank_cb;
 197         int regist_commit_cb;
 198         int regist_change_cb;
 199         int regist_dpms_cb;
 200
 201         struct list_head layer_list;
 202         struct list_head capture_list;
 203         struct list_head vblank_handler_list;
 204         struct list_head output_commit_handler_list;
 205
 206         /* for layer commit */
 207         struct list_head layer_commit_handler_list;
 208         struct list_head pending_commit_handler_list;
 209         tdm_vblank *vblank;
 210         int layer_waiting_vblank;
 211
 212         /* seperate list for multi-thread*/
 213         struct list_head change_handler_list_main;
 214         struct list_head change_handler_list_sub;
 215
 216         void **layers_ptr;
 217
 218         /* TODO: temp solution for handling DPMS things in sub-htread */
 219         tdm_event_loop_source *dpms_changed_timer;
 220 };
 221
 222 struct _tdm_private_layer {
 223         struct list_head link;
 224
 225         int index;
 226
 227         tdm_private_display *private_display;
 228         tdm_private_output *private_output;
 229
 230         tdm_caps_layer caps;
 231         tdm_layer *layer_backend;
 232
 233         /* When a buffer is set to a layer, it will be stored to waiting_buffer.
 234          * And when a layer is committed, it will be moved to committed_buffer.
 235          * Finally when a commit handler is called, it will be moved to showing_buffer.
 236          */
 237         tdm_private_layer_buffer *waiting_buffer;
 238         tdm_private_layer_buffer *committed_buffer;   /* for output_commit */
 239         tdm_private_layer_buffer *showing_buffer;
 240         tbm_surface_queue_h buffer_queue;
 241
 242         struct list_head capture_list;
 243
 244         unsigned int usable;
 245         unsigned int committing;
 246
 247         double fps_stamp;
 248         unsigned int fps_count;
 249 };
 250
 251 struct _tdm_private_pp {
 252         struct list_head link;
 253
 254         double stamp;
 255
 256         tdm_private_display *private_display;
 257
 258         tdm_pp *pp_backend;
 259
 260         struct list_head pending_buffer_list;
 261         struct list_head buffer_list;
 262
 263         tdm_info_pp info;
 264         pid_t owner_tid;
 265
 266         tdm_pp_done_handler done_func;
 267         void *done_user_data;
 268 };
 269
 270 struct _tdm_private_capture {
 271         struct list_head link;
 272         struct list_head display_link;
 273
 274         double stamp;
 275
 276         tdm_capture_target target;
 277
 278         tdm_private_display *private_display;
 279         tdm_private_output *private_output;
 280         tdm_private_layer *private_layer;
 281
 282         tdm_capture *capture_backend;
 283
 284         struct list_head pending_buffer_list;
 285         struct list_head buffer_list;
 286
 287         tdm_info_capture info;
 288         pid_t owner_tid;
 289
 290         tdm_capture_done_handler done_func;
 291         void *done_user_data;
 292 };
 293
 294 /* CAUTION:
 295  * Note that we don't need to (un)lock mutex to use this structure. If there is
 296  * no TDM thread, all TDM resources are protected by private_display's mutex.
 297  * If there is a TDM thread, this struct will be used only in a TDM thread.
 298  * So, we don't need to protect this structure by mutex. Not thread-safe.
 299  */
 300 struct _tdm_private_loop {
 301         /* TDM uses wl_event_loop to handle various event sources including the TDM
 302          * backend's fd.
 303          */
 304         struct wl_display *wl_display;
 305         struct wl_event_loop *wl_loop;
 306
 307         int backend_fd;
 308         tdm_event_loop_source *backend_source;
 309
 310         /* In event loop, all resources are accessed by this dpy.
 311          * CAUTION:
 312          * - DO NOT include other private structure in this structure because this
 313          *   struct is not protected by mutex.
 314          */
 315         tdm_display *dpy;
 316
 317         /* for handling TDM client requests */
 318         tdm_private_server *private_server;
 319
 320         /* To have a TDM event thread. If TDM_THREAD enviroment variable is not set
 321          * private_thread is NULL.
 322          */
 323         tdm_private_thread *private_thread;
 324 };
 325
 326 struct _tdm_private_vblank_handler {
 327         struct list_head link;
 328
 329         tdm_private_output *private_output;
 330         int interval;
 331         int sync;
 332         tdm_output_vblank_handler func;
 333         void *user_data;
 334
 335         pid_t owner_tid;
 336 };
 337
 338 struct _tdm_private_output_commit_handler {
 339         struct list_head link;
 340
 341         tdm_private_output *private_output;
 342         tdm_output_commit_handler func;
 343         void *user_data;
 344
 345         pid_t owner_tid;
 346 };
 347
 348 struct _tdm_private_layer_commit_handler {
 349         struct list_head link;
 350
 351         tdm_private_layer *private_layer;
 352         tdm_layer_commit_handler func;
 353         void *user_data;
 354
 355         tdm_private_layer_buffer *committed_buffer;   /* for layer_commit */
 356 };
 357
 358 struct _tdm_private_change_handler {
 359         struct list_head link;
 360
 361         tdm_private_output *private_output;
 362         tdm_output_change_handler func;
 363         void *user_data;
 364
 365         pid_t owner_tid;
 366 };
 367
 368 struct _tdm_private_layer_buffer {
 369         tbm_surface_h buffer;
 370         struct list_head link;
 371 };
 372
 373 typedef struct _tdm_buffer_info {
 374         tbm_surface_h buffer;
 375
 376         /* ref_count for backend */
 377         int backend_ref_count;
 378
 379         struct list_head release_funcs;
 380         struct list_head destroy_funcs;
 381
 382         struct list_head *list;
 383         struct list_head link;
 384 } tdm_buffer_info;
 385
 386 typedef struct _tdm_pp_private_buffer {
 387         tbm_surface_h src;
 388         tbm_surface_h dst;
 389         struct list_head link;
 390         struct list_head commit_link;
 391 } tdm_pp_private_buffer;
 392
 393 typedef struct _tdm_capture_private_buffer {
 394         tbm_surface_h buffer;
 395         struct list_head link;
 396         struct list_head commit_link;
 397 } tdm_capture_private_buffer;
 398
 399 int
 400 tdm_display_check_module_abi(tdm_private_display *private_display, int abimaj, int abimin);
 401
 402 tdm_private_output *
 403 tdm_display_find_output_stamp(tdm_private_display *private_display, double stamp);
 404 tdm_private_pp *
 405 tdm_pp_find_stamp(tdm_private_display *private_display, double stamp);
 406 tdm_private_capture *
 407 tdm_capture_find_stamp(tdm_private_display *private_display, double stamp);
 408
 409 void
 410 tdm_output_cb_vblank(tdm_output *output_backend, unsigned int sequence,
 411                                          unsigned int tv_sec, unsigned int tv_usec, void *user_data);
 412 void
 413 tdm_output_cb_commit(tdm_output *output_backend, unsigned int sequence,
 414                                          unsigned int tv_sec, unsigned int tv_usec, void *user_data);
 415 void
 416 tdm_output_cb_status(tdm_output *output_backend, tdm_output_conn_status status,
 417                                          void *user_data);
 418 void
 419 tdm_output_cb_dpms(tdm_output *output_backend, tdm_output_dpms dpms,
 420                                    void *user_data);
 421 tdm_error
 422 tdm_output_wait_vblank_add_front(tdm_output *output, int interval, int sync,
 423                                                                  tdm_output_vblank_handler func, void *user_data);
 424
 425 void
 426 tdm_pp_cb_done(tdm_pp *pp_backend, tbm_surface_h src, tbm_surface_h dst,
 427                            void *user_data);
 428 void
 429 tdm_capture_cb_done(tdm_capture *capture_backend, tbm_surface_h buffer,
 430                                         void *user_data);
 431 tdm_error
 432 tdm_vblank_cb_vblank_SW(tdm_vblank *vblank, double vblank_stamp);
 433 tdm_error
 434 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front);
 435
 436 void
 437 tdm_output_call_change_handler_internal(tdm_private_output *private_output,
 438                                                                                 struct list_head *change_handler_list,
 439                                                                                 tdm_output_change_type type,
 440                                                                                 tdm_value value,
 441                                                                                 int no_check_thread_id);
 442
 443 tdm_private_pp *
 444 tdm_pp_create_internal(tdm_private_display *private_display, tdm_error *error);
 445 void
 446 tdm_pp_destroy_internal(tdm_private_pp *private_pp);
 447
 448 tdm_private_capture *
 449 tdm_capture_create_output_internal(tdm_private_output *private_output,
 450                                                                    tdm_error *error);
 451 tdm_private_capture *
 452 tdm_capture_create_layer_internal(tdm_private_layer *private_layer,
 453                                                                   tdm_error *error);
 454 void
 455 tdm_capture_destroy_internal(tdm_private_capture *private_capture);
 456
 457 /* utility buffer functions for private */
 458 tdm_buffer_info*
 459 tdm_buffer_get_info(tbm_surface_h buffer);
 460 tbm_surface_h
 461 tdm_buffer_list_get_first_entry(struct list_head *list);
 462 void
 463 tdm_buffer_list_dump(struct list_head *list);
 464
 465 void
 466 tdm_buffer_remove_release_handler_internal(tbm_surface_h buffer);
 467
 468 /* event functions for private */
 469 tdm_error
 470 tdm_event_loop_init(tdm_private_display *private_display);
 471 void
 472 tdm_event_loop_deinit(tdm_private_display *private_display);
 473 void
 474 tdm_event_loop_create_backend_source(tdm_private_display *private_display);
 475 int
 476 tdm_event_loop_get_fd(tdm_private_display *private_display);
 477 tdm_error
 478 tdm_event_loop_dispatch(tdm_private_display *private_display);
 479 void
 480 tdm_event_loop_flush(tdm_private_display *private_display);
 481
 482 typedef enum {
 483         TDM_THREAD_CB_NONE,
 484         TDM_THREAD_CB_OUTPUT_COMMIT,
 485         TDM_THREAD_CB_OUTPUT_VBLANK,
 486         TDM_THREAD_CB_OUTPUT_STATUS,
 487         TDM_THREAD_CB_OUTPUT_DPMS,
 488         TDM_THREAD_CB_PP_DONE,
 489         TDM_THREAD_CB_CAPTURE_DONE,
 490         TDM_THREAD_CB_VBLANK_SW,
 491 } tdm_thread_cb_type;
 492
 493 typedef struct _tdm_thread_cb_base tdm_thread_cb_base;
 494 typedef struct _tdm_thread_cb_output_vblank tdm_thread_cb_output_commit;
 495 typedef struct _tdm_thread_cb_output_vblank tdm_thread_cb_output_vblank;
 496 typedef struct _tdm_thread_cb_output_status tdm_thread_cb_output_status;
 497 typedef struct _tdm_thread_cb_output_dpms tdm_thread_cb_output_dpms;
 498 typedef struct _tdm_thread_cb_pp_done tdm_thread_cb_pp_done;
 499 typedef struct _tdm_thread_cb_capture_done tdm_thread_cb_capture_done;
 500 typedef struct _tdm_thread_cb_vblank_sw tdm_thread_cb_vblank_sw;
 501
 502 struct _tdm_thread_cb_base {
 503         tdm_thread_cb_type type;
 504         unsigned int length;
 505 };
 506
 507 struct _tdm_thread_cb_output_vblank {
 508         tdm_thread_cb_base base;
 509         double output_stamp;
 510         unsigned int sequence;
 511         unsigned int tv_sec;
 512         unsigned int tv_usec;
 513         void *user_data;
 514 };
 515
 516 struct _tdm_thread_cb_output_status {
 517         tdm_thread_cb_base base;
 518         double output_stamp;
 519         tdm_output_conn_status status;
 520         void *user_data;
 521 };
 522
 523 struct _tdm_thread_cb_output_dpms {
 524         tdm_thread_cb_base base;
 525         double output_stamp;
 526         tdm_output_dpms dpms;
 527         void *user_data;
 528 };
 529
 530 struct _tdm_thread_cb_pp_done {
 531         tdm_thread_cb_base base;
 532         double pp_stamp;
 533         tbm_surface_h src;
 534         tbm_surface_h dst;
 535         void *user_data;
 536 };
 537
 538 struct _tdm_thread_cb_capture_done {
 539         tdm_thread_cb_base base;
 540         double capture_stamp;
 541         tbm_surface_h buffer;
 542         void *user_data;
 543 };
 544
 545 struct _tdm_thread_cb_vblank_sw {
 546         tdm_thread_cb_base base;
 547         double vblank_stamp;
 548 };
 549
 550 tdm_error
 551 tdm_thread_init(tdm_private_loop *private_loop);
 552 void
 553 tdm_thread_deinit(tdm_private_loop *private_loop);
 554 int
 555 tdm_thread_get_fd(tdm_private_loop *private_loop);
 556 tdm_error
 557 tdm_thread_send_cb(tdm_private_loop *private_loop, tdm_thread_cb_base *base);
 558 tdm_error
 559 tdm_thread_handle_cb(tdm_private_loop *private_loop);
 560 int
 561 tdm_thread_in_display_thread(pid_t tid);
 562 int
 563 tdm_thread_is_running(void);
 564
 565 tdm_error
 566 tdm_server_init(tdm_private_loop *private_loop);
 567 void
 568 tdm_server_deinit(tdm_private_loop *private_loop);
 569 tdm_error
 570 tdm_server_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps);
 571 void
 572 tdm_server_get_vblank_list_information(tdm_display *dpy, char *reply, int *len);
 573
 574 char *
 575 tdm_helper_dump_make_directory(const char *path, char *reply, int *len);
 576 void
 577 tdm_helper_dump_buffer_str(tbm_surface_h buffer, char *dir, char *str);
 578 double
 579 tdm_helper_get_time(void);
 580
 581 extern pthread_mutex_t tdm_mutex_check_lock;
 582 extern int tdm_mutex_locked;
 583 extern const char *tdm_mutex_lock_func;
 584 extern int tdm_mutex_lock_line;
 585 extern int tdm_dump_enable;
 586 extern char *tdm_debug_dump_dir;
 587
 588 #define _pthread_mutex_unlock(l) \
 589         do { \
 590                 if (tdm_debug_module & TDM_DEBUG_MUTEX) \
 591                         TDM_INFO("mutex unlock"); \
 592                 pthread_mutex_lock(&tdm_mutex_check_lock); \
 593                 tdm_mutex_locked = 0; \
 594                 tdm_mutex_lock_func = NULL; \
 595                 tdm_mutex_lock_line = 0; \
 596                 pthread_mutex_unlock(&tdm_mutex_check_lock); \
 597                 pthread_mutex_unlock(l); \
 598         } while (0)
 599 #ifdef TDM_CONFIG_MUTEX_TIMEOUT
 600 #define MUTEX_TIMEOUT_SEC 5
 601 #define _pthread_mutex_lock(l) \
 602         do { \
 603                 if (tdm_debug_module & TDM_DEBUG_MUTEX) \
 604                         TDM_INFO("mutex lock"); \
 605                 struct timespec rtime; \
 606                 clock_gettime(CLOCK_REALTIME, &rtime); \
 607                 rtime.tv_sec += MUTEX_TIMEOUT_SEC; \
 608                 if (pthread_mutex_timedlock(l, &rtime)) { \
 609                         TDM_ERR("Mutex lock failed PID %d", getpid()); \
 610                         _pthread_mutex_unlock(l); \
 611                 } \
 612                 else { \
 613                         pthread_mutex_lock(&tdm_mutex_check_lock); \
 614                         tdm_mutex_locked = 1; \
 615                         tdm_mutex_lock_func = __FUNCTION__; \
 616                         tdm_mutex_lock_line = __LINE__; \
 617                         pthread_mutex_unlock(&tdm_mutex_check_lock); \
 618                 } \
 619         } while (0)
 620 #else //TDM_CONFIG_MUTEX_TIMEOUT
 621 #define _pthread_mutex_lock(l) \
 622         do { \
 623                 if (tdm_debug_module & TDM_DEBUG_MUTEX) \
 624                         TDM_INFO("mutex lock"); \
 625                 pthread_mutex_lock(l); \
 626                 pthread_mutex_lock(&tdm_mutex_check_lock); \
 627                 tdm_mutex_locked = 1; \
 628                 tdm_mutex_lock_func = __FUNCTION__; \
 629                 tdm_mutex_lock_line = __LINE__; \
 630                 pthread_mutex_unlock(&tdm_mutex_check_lock); \
 631         } while (0)
 632 #endif //TDM_CONFIG_MUTEX_TIMEOUT
 633 //#define TDM_MUTEX_IS_LOCKED() (tdm_mutex_locked == 1)
 634 static inline int TDM_MUTEX_IS_LOCKED(void)
 635 {
 636         int ret;
 637         /* if thread is not running, we don't need to consider mutex things. */
 638         if (!tdm_thread_is_running())
 639                 return 1;
 640         pthread_mutex_lock(&tdm_mutex_check_lock);
 641         ret = (tdm_mutex_locked == 1);
 642         pthread_mutex_unlock(&tdm_mutex_check_lock);
 643         return ret;
 644 }
 645
 646 #define tdm_display_lock(dpy)   _pthread_mutex_lock(&((tdm_private_display *)dpy)->lock)
 647 #define tdm_display_unlock(dpy)   _pthread_mutex_unlock(&((tdm_private_display *)dpy)->lock)
 648
 649 tdm_error
 650 tdm_display_update_output(tdm_private_display *private_display,
 651                                                   tdm_output *output_backend, int pipe);
 652 tdm_error
 653 tdm_display_enable_debug_module(const char*modules);
 654 tdm_error
 655 tdm_display_enable_dump(tdm_private_display *private_display, const char *dump_str, char *reply, int *len);
 656 tdm_error
 657 tdm_display_enable_path(const char *path);
 658 tdm_error
 659 tdm_display_enable_ttrace_vblank(tdm_display *dpy, tdm_output *output, int enable);
 660 tdm_error
 661 tdm_display_enable_commit_per_vblank(tdm_private_display *private_display, int enable);
 662 tdm_error
 663 tdm_display_enable_fps(tdm_private_display *private_display, int enable);
 664
 665 void
 666 tdm_monitor_server_command(tdm_display *dpy, const char *options, char *reply, int *len);
 667
 668 #ifdef __cplusplus
 669 }
 670 #endif
 671
 672 #endif /* _TDM_PRIVATE_H_ */