host.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // host.c -- coordinates spawning and killing of local servers
  21
  22 #include "quakedef.h"
  23
  24 #include <time.h>
  25 #include "libcurl.h"
  26 #include "cdaudio.h"
  27 #include "cl_video.h"
  28 #include "progsvm.h"
  29 #include "csprogs.h"
  30 #include "sv_demo.h"
  31 #include "snd_main.h"
  32 #include "taskqueue.h"
  33 #include "thread.h"
  34 #include "utf8lib.h"
  35
  36 /*
  37
  38 A server can always be started, even if the system started out as a client
  39 to a remote system.
  40
  41 A client can NOT be started if the system started as a dedicated server.
  42
  43 Memory is cleared / released when a server or client begins, not when they end.
  44
  45 */
  46
  47 host_t host;
  48
  49 // pretend frames take this amount of time (in seconds), 0 = realtime
  50 cvar_t host_framerate = {CVAR_CLIENT | CVAR_SERVER, "host_framerate","0", "locks frame timing to this value in seconds, 0.05 is 20fps for example, note that this can easily run too fast, use cl_maxfps if you want to limit your framerate instead, or sys_ticrate to limit server speed"};
  51 cvar_t cl_maxphysicsframesperserverframe = {CVAR_CLIENT, "cl_maxphysicsframesperserverframe","10", "maximum number of physics frames per server frame"};
  52 // shows time used by certain subsystems
  53 cvar_t host_speeds = {CVAR_CLIENT | CVAR_SERVER, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
  54 cvar_t host_maxwait = {CVAR_CLIENT | CVAR_SERVER, "host_maxwait","1000", "maximum sleep time requested from the operating system in millisecond. Larger sleeps will be done using multiple host_maxwait length sleeps. Lowering this value will increase CPU load, but may help working around problems with accuracy of sleep times."};
  55 cvar_t cl_minfps = {CVAR_CLIENT | CVAR_SAVE, "cl_minfps", "40", "minimum fps target - while the rendering performance is below this, it will drift toward lower quality"};
  56 cvar_t cl_minfps_fade = {CVAR_CLIENT | CVAR_SAVE, "cl_minfps_fade", "1", "how fast the quality adapts to varying framerate"};
  57 cvar_t cl_minfps_qualitymax = {CVAR_CLIENT | CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
  58 cvar_t cl_minfps_qualitymin = {CVAR_CLIENT | CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
  59 cvar_t cl_minfps_qualitymultiply = {CVAR_CLIENT | CVAR_SAVE, "cl_minfps_qualitymultiply", "0.2", "multiplier for quality changes in quality change per second render time (1 assumes linearity of quality and render time)"};
  60 cvar_t cl_minfps_qualityhysteresis = {CVAR_CLIENT | CVAR_SAVE, "cl_minfps_qualityhysteresis", "0.05", "reduce all quality increments by this to reduce flickering"};
  61 cvar_t cl_minfps_qualitystepmax = {CVAR_CLIENT | CVAR_SAVE, "cl_minfps_qualitystepmax", "0.1", "maximum quality change in a single frame"};
  62 cvar_t cl_minfps_force = {CVAR_CLIENT, "cl_minfps_force", "0", "also apply quality reductions in timedemo/capturevideo"};
  63 cvar_t cl_maxfps = {CVAR_CLIENT | CVAR_SAVE, "cl_maxfps", "0", "maximum fps cap, 0 = unlimited, if game is running faster than this it will wait before running another frame (useful to make cpu time available to other programs)"};
  64 cvar_t cl_maxfps_alwayssleep = {CVAR_CLIENT, "cl_maxfps_alwayssleep","1", "gives up some processing time to other applications each frame, value in milliseconds, disabled if cl_maxfps is 0"};
  65 cvar_t cl_maxidlefps = {CVAR_CLIENT | CVAR_SAVE, "cl_maxidlefps", "20", "maximum fps cap when the game is not the active window (makes cpu time available to other programs"};
  66
  67 cvar_t developer = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "developer","0", "shows debugging messages and information (recommended for all developers and level designers); the value -1 also suppresses buffering and logging these messages"};
  68 cvar_t developer_extra = {CVAR_CLIENT | CVAR_SERVER, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};
  69 cvar_t developer_insane = {CVAR_CLIENT | CVAR_SERVER, "developer_insane", "0", "prints huge streams of information about internal workings, entire contents of files being read/written, etc.  Not recommended!"};
  70 cvar_t developer_loadfile = {CVAR_CLIENT | CVAR_SERVER, "developer_loadfile","0", "prints name and size of every file loaded via the FS_LoadFile function (which is almost everything)"};
  71 cvar_t developer_loading = {CVAR_CLIENT | CVAR_SERVER, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
  72 cvar_t developer_entityparsing = {CVAR_CLIENT, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  73
  74 cvar_t timestamps = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  75 cvar_t timeformat = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  76
  77 cvar_t sessionid = {CVAR_CLIENT | CVAR_SERVER | CVAR_READONLY, "sessionid", "", "ID of the current session (use the -sessionid parameter to set it); this is always either empty or begins with a dot (.)"};
  78 cvar_t locksession = {CVAR_CLIENT | CVAR_SERVER, "locksession", "0", "Lock the session? 0 = no, 1 = yes and abort on failure, 2 = yes and continue on failure"};
  79
  80 /*
  81 ================
  82 Host_AbortCurrentFrame
  83
  84 aborts the current host frame and goes on with the next one
  85 ================
  86 */
  87 void Host_AbortCurrentFrame(void) DP_FUNC_NORETURN;
  88 void Host_AbortCurrentFrame(void)
  89 {
  90         // in case we were previously nice, make us mean again
  91         Sys_MakeProcessMean();
  92
  93         longjmp (host.abortframe, 1);
  94 }
  95
  96 /*
  97 ================
  98 Host_Error
  99
 100 This shuts down both the client and server
 101 ================
 102 */
 103 void Host_Error (const char *error, ...)
 104 {
 105         static char hosterrorstring1[MAX_INPUTLINE]; // THREAD UNSAFE
 106         static char hosterrorstring2[MAX_INPUTLINE]; // THREAD UNSAFE
 107         static qboolean hosterror = false;
 108         va_list argptr;
 109
 110         // turn off rcon redirect if it was active when the crash occurred
 111         // to prevent loops when it is a networking problem
 112         Con_Rcon_Redirect_Abort();
 113
 114         va_start (argptr,error);
 115         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 116         va_end (argptr);
 117
 118         Con_Printf(CON_ERROR "Host_Error: %s\n", hosterrorstring1);
 119
 120         // LadyHavoc: if crashing very early, or currently shutting down, do
 121         // Sys_Error instead
 122         if (host.framecount < 3 || host.state == host_shutdown)
 123                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 124
 125         if (hosterror)
 126                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 127         hosterror = true;
 128
 129         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 130
 131         CL_Parse_DumpPacket();
 132
 133         CL_Parse_ErrorCleanUp();
 134
 135         //PR_Crash();
 136
 137         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 138         PRVM_Crash(SVVM_prog);
 139         PRVM_Crash(CLVM_prog);
 140 #ifdef CONFIG_MENU
 141         PRVM_Crash(MVM_prog);
 142 #endif
 143
 144         cl.csqc_loaded = false;
 145         Cvar_SetValueQuick(&csqc_progcrc, -1);
 146         Cvar_SetValueQuick(&csqc_progsize, -1);
 147
 148         SV_LockThreadMutex();
 149         SV_Shutdown ();
 150         SV_UnlockThreadMutex();
 151
 152         if (cls.state == ca_dedicated)
 153                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 154
 155         CL_Disconnect ();
 156         cls.demonum = -1;
 157
 158         hosterror = false;
 159
 160         Host_AbortCurrentFrame();
 161 }
 162
 163 static void Host_ServerOptions (void)
 164 {
 165         int i;
 166
 167         // general default
 168         svs.maxclients = 8;
 169
 170 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 171 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 172         // if no client is in the executable or -dedicated is specified on
 173         // commandline, start a dedicated server
 174         i = COM_CheckParm ("-dedicated");
 175         if (i || !cl_available)
 176         {
 177                 cls.state = ca_dedicated;
 178                 // check for -dedicated specifying how many players
 179                 if (i && i + 1 < sys.argc && atoi (sys.argv[i+1]) >= 1)
 180                         svs.maxclients = atoi (sys.argv[i+1]);
 181                 if (COM_CheckParm ("-listen"))
 182                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 183                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 184                 Cvar_SetValue(&cvars_all, "sv_public", 1);
 185         }
 186         else if (cl_available)
 187         {
 188                 // client exists and not dedicated, check if -listen is specified
 189                 cls.state = ca_disconnected;
 190                 i = COM_CheckParm ("-listen");
 191                 if (i)
 192                 {
 193                         // default players unless specified
 194                         if (i + 1 < sys.argc && atoi (sys.argv[i+1]) >= 1)
 195                                 svs.maxclients = atoi (sys.argv[i+1]);
 196                 }
 197                 else
 198                 {
 199                         // default players in some games, singleplayer in most
 200                         if (gamemode != GAME_GOODVSBAD2 && !IS_NEXUIZ_DERIVED(gamemode) && gamemode != GAME_BATTLEMECH)
 201                                 svs.maxclients = 1;
 202                 }
 203         }
 204
 205         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
 206
 207         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 208
 209         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 210                 Cvar_SetValueQuick(&deathmatch, 1);
 211 }
 212
 213 /*
 214 ==================
 215 Host_Quit_f
 216 ==================
 217 */
 218 void Host_Quit_f(cmd_state_t *cmd)
 219 {
 220         if(host.state == host_shutdown)
 221                 Con_Printf("shutting down already!\n");
 222         else
 223                 host.state = host_shutdown;
 224 }
 225
 226 static void Host_Version_f(cmd_state_t *cmd)
 227 {
 228         Con_Printf("Version: %s build %s\n", gamename, buildstring);
 229 }
 230
 231 /*
 232 =======================
 233 Host_InitLocal
 234 ======================
 235 */
 236 void Host_SaveConfig_f(cmd_state_t *cmd);
 237 void Host_LoadConfig_f(cmd_state_t *cmd);
 238 extern cvar_t sv_writepicture_quality;
 239 extern cvar_t r_texture_jpeg_fastpicmip;
 240 static void Host_InitLocal (void)
 241 {
 242         Cmd_AddCommand(CMD_SHARED, "quit", Host_Quit_f, "quit the game");
 243         Cmd_AddCommand(CMD_SHARED, "version", Host_Version_f, "print engine version");
 244         Cmd_AddCommand(CMD_SHARED, "saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 245         Cmd_AddCommand(CMD_SHARED, "loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 246         Cvar_RegisterVariable (&cl_maxphysicsframesperserverframe);
 247         Cvar_RegisterVariable (&host_framerate);
 248         Cvar_RegisterVariable (&host_speeds);
 249         Cvar_RegisterVariable (&host_maxwait);
 250         Cvar_RegisterVariable (&cl_minfps);
 251         Cvar_RegisterVariable (&cl_minfps_fade);
 252         Cvar_RegisterVariable (&cl_minfps_qualitymax);
 253         Cvar_RegisterVariable (&cl_minfps_qualitymin);
 254         Cvar_RegisterVariable (&cl_minfps_qualitystepmax);
 255         Cvar_RegisterVariable (&cl_minfps_qualityhysteresis);
 256         Cvar_RegisterVariable (&cl_minfps_qualitymultiply);
 257         Cvar_RegisterVariable (&cl_minfps_force);
 258         Cvar_RegisterVariable (&cl_maxfps);
 259         Cvar_RegisterVariable (&cl_maxfps_alwayssleep);
 260         Cvar_RegisterVariable (&cl_maxidlefps);
 261
 262         Cvar_RegisterVariable (&developer);
 263         Cvar_RegisterVariable (&developer_extra);
 264         Cvar_RegisterVariable (&developer_insane);
 265         Cvar_RegisterVariable (&developer_loadfile);
 266         Cvar_RegisterVariable (&developer_loading);
 267         Cvar_RegisterVariable (&developer_entityparsing);
 268
 269         Cvar_RegisterVariable (&timestamps);
 270         Cvar_RegisterVariable (&timeformat);
 271
 272         Cvar_RegisterVariable (&sv_writepicture_quality);
 273         Cvar_RegisterVariable (&r_texture_jpeg_fastpicmip);
 274 }
 275
 276
 277 /*
 278 ===============
 279 Host_SaveConfig_f
 280
 281 Writes key bindings and archived cvars to config.cfg
 282 ===============
 283 */
 284 static void Host_SaveConfig_to(const char *file)
 285 {
 286         qfile_t *f;
 287
 288 // dedicated servers initialize the host but don't parse and set the
 289 // config.cfg cvars
 290         // LadyHavoc: don't save a config if it crashed in startup
 291         if (host.framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 292         {
 293                 f = FS_OpenRealFile(file, "wb", false);
 294                 if (!f)
 295                 {
 296                         Con_Printf(CON_ERROR "Couldn't write %s.\n", file);
 297                         return;
 298                 }
 299
 300                 Key_WriteBindings (f);
 301                 Cvar_WriteVariables (&cvars_all, f);
 302
 303                 FS_Close (f);
 304         }
 305 }
 306 void Host_SaveConfig(void)
 307 {
 308         Host_SaveConfig_to(CONFIGFILENAME);
 309 }
 310 void Host_SaveConfig_f(cmd_state_t *cmd)
 311 {
 312         const char *file = CONFIGFILENAME;
 313
 314         if(Cmd_Argc(cmd) >= 2) {
 315                 file = Cmd_Argv(cmd, 1);
 316                 Con_Printf("Saving to %s\n", file);
 317         }
 318
 319         Host_SaveConfig_to(file);
 320 }
 321
 322 static void Host_AddConfigText(cmd_state_t *cmd)
 323 {
 324         // set up the default startmap_sp and startmap_dm aliases (mods can
 325         // override these) and then execute the quake.rc startup script
 326         if (gamemode == GAME_NEHAHRA)
 327                 Cbuf_InsertText(cmd, "alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec " STARTCONFIGFILENAME "\n");
 328         else if (gamemode == GAME_TRANSFUSION)
 329                 Cbuf_InsertText(cmd, "alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec " STARTCONFIGFILENAME "\n");
 330         else if (gamemode == GAME_TEU)
 331                 Cbuf_InsertText(cmd, "alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
 332         else
 333                 Cbuf_InsertText(cmd, "alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec " STARTCONFIGFILENAME "\n");
 334         Cbuf_Execute(cmd);
 335 }
 336
 337 /*
 338 ===============
 339 Host_LoadConfig_f
 340
 341 Resets key bindings and cvars to defaults and then reloads scripts
 342 ===============
 343 */
 344 void Host_LoadConfig_f(cmd_state_t *cmd)
 345 {
 346         // reset all cvars, commands and aliases to init values
 347         Cmd_RestoreInitState();
 348 #ifdef CONFIG_MENU
 349         // prepend a menu restart command to execute after the config
 350         Cbuf_InsertText(&cmd_client, "\nmenu_restart\n");
 351 #endif
 352         // reset cvars to their defaults, and then exec startup scripts again
 353         Host_AddConfigText(&cmd_client);
 354 }
 355
 356 //============================================================================
 357
 358 /*
 359 ===================
 360 Host_GetConsoleCommands
 361
 362 Add them exactly as if they had been typed at the console
 363 ===================
 364 */
 365 static void Host_GetConsoleCommands (void)
 366 {
 367         char *line;
 368
 369         while ((line = Sys_ConsoleInput()))
 370         {
 371                 if (cls.state == ca_dedicated)
 372                         Cbuf_AddText(&cmd_server, line);
 373                 else
 374                         Cbuf_AddText(&cmd_client, line);
 375         }
 376 }
 377
 378 /*
 379 ==================
 380 Host_TimeReport
 381
 382 Returns a time report string, for example for
 383 ==================
 384 */
 385 const char *Host_TimingReport(char *buf, size_t buflen)
 386 {
 387         return va(buf, buflen, "%.1f%% CPU, %.2f%% lost, offset avg %.1fms, max %.1fms, sdev %.1fms", svs.perf_cpuload * 100, svs.perf_lost * 100, svs.perf_offset_avg * 1000, svs.perf_offset_max * 1000, svs.perf_offset_sdev * 1000);
 388 }
 389
 390 /*
 391 ==================
 392 Host_Frame
 393
 394 Runs all active servers
 395 ==================
 396 */
 397 static void Host_Init(void);
 398 void Host_Main(void)
 399 {
 400         double time1 = 0;
 401         double time2 = 0;
 402         double time3 = 0;
 403         double cl_timer = 0, sv_timer = 0;
 404         double clframetime, time, oldtime, newtime;
 405         double wait;
 406         int pass1, pass2, pass3, i;
 407         char vabuf[1024];
 408         qboolean playing;
 409
 410         host.restless = false;
 411
 412         Host_Init();
 413
 414         host.realtime = 0;
 415         host.sleeptime = 0;
 416         host.dirtytime = Sys_DirtyTime();
 417
 418         while(host.state != host_shutdown)
 419         {
 420                 if (setjmp(host.abortframe))
 421                 {
 422                         SCR_ClearLoadingScreen(false);
 423                         continue;                       // something bad happened, or the server disconnected
 424                 }
 425
 426                 oldtime = host.dirtytime;
 427                 newtime = Sys_DirtyTime();
 428                 time = newtime - oldtime;
 429                 if (time < 0)
 430                 {
 431                         // warn if it's significant
 432                         if (time < -0.01)
 433                                 Con_Printf(CON_WARN "Host_Mingled: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, time);
 434                         time = 0;
 435                 }
 436                 else if (time >= 1800)
 437                 {
 438                         Con_Printf(CON_WARN "Host_Mingled: time stepped forward (went from %f to %f, difference %f)\n", oldtime, newtime, time);
 439                         time = 0;
 440                 }
 441                 host.realtime += time;
 442                 host.dirtytime = newtime;
 443
 444                 cl_timer += time;
 445                 sv_timer += time;
 446
 447                 if (!svs.threaded)
 448                 {
 449                         svs.perf_acc_sleeptime = host.sleeptime;
 450                         svs.perf_acc_realtime += time;
 451
 452                         // Look for clients who have spawned
 453                         playing = false;
 454                         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 455                                 if(host_client->begun)
 456                                         if(host_client->netconnection)
 457                                                 playing = true;
 458                         if(sv.time < 10)
 459                         {
 460                                 // don't accumulate time for the first 10 seconds of a match
 461                                 // so things can settle
 462                                 svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = host.sleeptime = 0;
 463                         }
 464                         else if(svs.perf_acc_realtime > 5)
 465                         {
 466                                 svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 467                                 svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 468                                 if(svs.perf_acc_offset_samples > 0)
 469                                 {
 470                                         svs.perf_offset_max = svs.perf_acc_offset_max;
 471                                         svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 472                                         svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 473                                 }
 474                                 if(svs.perf_lost > 0 && developer_extra.integer)
 475                                         if(playing) // only complain if anyone is looking
 476                                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport(vabuf, sizeof(vabuf)));
 477                                 svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = host.sleeptime = 0;
 478                         }
 479                 }
 480
 481                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 482                         Cvar_SetValueQuick(&host_framerate, 0);
 483
 484                 TaskQueue_Frame(false);
 485
 486                 // keep the random time dependent, but not when playing demos/benchmarking
 487                 if(!*sv_random_seed.string && !cls.demoplayback)
 488                         rand();
 489
 490                 NetConn_UpdateSockets();
 491
 492                 Log_DestBuffer_Flush();
 493
 494                 // receive packets on each main loop iteration, as the main loop may
 495                 // be undersleeping due to select() detecting a new packet
 496                 if (sv.active && !svs.threaded)
 497                         NetConn_ServerFrame();
 498
 499                 Curl_Run();
 500
 501                 // check for commands typed to the host
 502                 Host_GetConsoleCommands();
 503
 504                 // process console commands
 505 //              R_TimeReport("preconsole");
 506                 CL_VM_PreventInformationLeaks();
 507                 Cbuf_Frame(&cmd_client);
 508                 Cbuf_Frame(&cmd_server);
 509
 510                 if(sv.active)
 511                         Cbuf_Frame(&cmd_serverfromclient);
 512
 513 //              R_TimeReport("console");
 514
 515                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 516
 517                 // if the accumulators haven't become positive yet, wait a while
 518                 if (cls.state == ca_dedicated)
 519                         wait = sv_timer * -1000000.0;
 520                 else if (!sv.active || svs.threaded)
 521                         wait = cl_timer * -1000000.0;
 522                 else
 523                         wait = max(cl_timer, sv_timer) * -1000000.0;
 524
 525                 if (!host.restless && wait >= 1)
 526                 {
 527                         double time0, delta;
 528
 529                         if(host_maxwait.value <= 0)
 530                                 wait = min(wait, 1000000.0);
 531                         else
 532                                 wait = min(wait, host_maxwait.value * 1000.0);
 533                         if(wait < 1)
 534                                 wait = 1; // because we cast to int
 535
 536                         time0 = Sys_DirtyTime();
 537                         if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer && !svs.threaded) {
 538                                 NetConn_SleepMicroseconds((int)wait);
 539                                 if (cls.state != ca_dedicated)
 540                                         NetConn_ClientFrame(); // helps server browser get good ping values
 541                                 // TODO can we do the same for ServerFrame? Probably not.
 542                         }
 543                         else
 544                                 Sys_Sleep((int)wait);
 545                         delta = Sys_DirtyTime() - time0;
 546                         if (delta < 0 || delta >= 1800)
 547                                 delta = 0;
 548                         host.sleeptime += delta;
 549 //                      R_TimeReport("sleep");
 550                         continue;
 551                 }
 552
 553                 // limit the frametime steps to no more than 100ms each
 554                 if (cl_timer > 0.1)
 555                         cl_timer = 0.1;
 556                 if (sv_timer > 0.1)
 557                 {
 558                         if (!svs.threaded)
 559                                 svs.perf_acc_lost += (sv_timer - 0.1);
 560                         sv_timer = 0.1;
 561                 }
 562
 563                 R_TimeReport("---");
 564
 565         //-------------------
 566         //
 567         // server operations
 568         //
 569         //-------------------
 570
 571                 // limit the frametime steps to no more than 100ms each
 572                 if (sv.active && sv_timer > 0 && !svs.threaded)
 573                 {
 574                         // execute one or more server frames, with an upper limit on how much
 575                         // execution time to spend on server frames to avoid freezing the game if
 576                         // the server is overloaded, this execution time limit means the game will
 577                         // slow down if the server is taking too long.
 578                         int framecount, framelimit = 1;
 579                         double advancetime, aborttime = 0;
 580                         float offset;
 581                         prvm_prog_t *prog = SVVM_prog;
 582
 583                         // run the world state
 584                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 585
 586                         // stop running server frames if the wall time reaches this value
 587                         if (sys_ticrate.value <= 0)
 588                                 advancetime = sv_timer;
 589                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 590                         {
 591                                 // synchronize to the client frametime, but no less than 10ms and no more than 100ms
 592                                 advancetime = bound(0.01, cl_timer, 0.1);
 593                         }
 594                         else
 595                         {
 596                                 advancetime = sys_ticrate.value;
 597                                 // listen servers can run multiple server frames per client frame
 598                                 framelimit = cl_maxphysicsframesperserverframe.integer;
 599                                 aborttime = Sys_DirtyTime() + 0.1;
 600                         }
 601                         if(host_timescale.value > 0 && host_timescale.value < 1)
 602                                 advancetime = min(advancetime, 0.1 / host_timescale.value);
 603                         else
 604                                 advancetime = min(advancetime, 0.1);
 605
 606                         if(advancetime > 0)
 607                         {
 608                                 offset = Sys_DirtyTime() - newtime;if (offset < 0 || offset >= 1800) offset = 0;
 609                                 offset += sv_timer;
 610                                 ++svs.perf_acc_offset_samples;
 611                                 svs.perf_acc_offset += offset;
 612                                 svs.perf_acc_offset_squared += offset * offset;
 613                                 if(svs.perf_acc_offset_max < offset)
 614                                         svs.perf_acc_offset_max = offset;
 615                         }
 616
 617                         // only advance time if not paused
 618                         // the game also pauses in singleplayer when menu or console is used
 619                         sv.frametime = advancetime * host_timescale.value;
 620                         if (host_framerate.value)
 621                                 sv.frametime = host_framerate.value;
 622                         if (sv.paused || host.paused)
 623                                 sv.frametime = 0;
 624
 625                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 626                         {
 627                                 sv_timer -= advancetime;
 628
 629                                 // move things around and think unless paused
 630                                 if (sv.frametime)
 631                                         SV_Physics();
 632
 633                                 // if this server frame took too long, break out of the loop
 634                                 if (framelimit > 1 && Sys_DirtyTime() >= aborttime)
 635                                         break;
 636                         }
 637                         R_TimeReport("serverphysics");
 638
 639                         // send all messages to the clients
 640                         SV_SendClientMessages();
 641
 642                         if (sv.paused == 1 && host.realtime > sv.pausedstart && sv.pausedstart > 0) {
 643                                 prog->globals.fp[OFS_PARM0] = host.realtime - sv.pausedstart;
 644                                 PRVM_serverglobalfloat(time) = sv.time;
 645                                 prog->ExecuteProgram(prog, PRVM_serverfunction(SV_PausedTic), "QC function SV_PausedTic is missing");
 646                         }
 647
 648                         // send an heartbeat if enough time has passed since the last one
 649                         NetConn_Heartbeat(0);
 650                         R_TimeReport("servernetwork");
 651                 }
 652                 else if (!svs.threaded)
 653                 {
 654                         // don't let r_speeds display jump around
 655                         R_TimeReport("serverphysics");
 656                         R_TimeReport("servernetwork");
 657                 }
 658
 659         //-------------------
 660         //
 661         // client operations
 662         //
 663         //-------------------
 664
 665                 // get new key events
 666                 Key_EventQueue_Unblock();
 667                 SndSys_SendKeyEvents();
 668                 Sys_SendKeyEvents();
 669
 670                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))
 671                 {
 672                         R_TimeReport("---");
 673                         Collision_Cache_NewFrame();
 674                         R_TimeReport("photoncache");
 675 #ifdef CONFIG_VIDEO_CAPTURE
 676                         // decide the simulation time
 677                         if (cls.capturevideo.active)
 678                         {
 679                                 //***
 680                                 if (cls.capturevideo.realtime)
 681                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 682                                 else
 683                                 {
 684                                         clframetime = 1.0 / cls.capturevideo.framerate;
 685                                         cl.realframetime = max(cl_timer, clframetime);
 686                                 }
 687                         }
 688                         else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
 689
 690 #else
 691                         if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
 692 #endif
 693                         {
 694                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
 695                                 // when running slow, we need to sleep to keep input responsive
 696                                 wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);
 697                                 if (wait > 0)
 698                                         Sys_Sleep((int)wait);
 699                         }
 700                         else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)
 701                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
 702                         else
 703                                 clframetime = cl.realframetime = cl_timer;
 704
 705                         // apply slowmo scaling
 706                         clframetime *= cl.movevars_timescale;
 707                         // scale playback speed of demos by slowmo cvar
 708                         if (cls.demoplayback)
 709                         {
 710                                 clframetime *= host_timescale.value;
 711                                 // if demo playback is paused, don't advance time at all
 712                                 if (cls.demopaused)
 713                                         clframetime = 0;
 714                         }
 715                         else
 716                         {
 717                                 // host_framerate overrides all else
 718                                 if (host_framerate.value)
 719                                         clframetime = host_framerate.value;
 720
 721                                 if (cl.paused || host.paused)
 722                                         clframetime = 0;
 723                         }
 724
 725                         if (cls.timedemo)
 726                                 clframetime = cl.realframetime = cl_timer;
 727
 728                         // deduct the frame time from the accumulator
 729                         cl_timer -= cl.realframetime;
 730
 731                         cl.oldtime = cl.time;
 732                         cl.time += clframetime;
 733
 734                         // update video
 735                         if (host_speeds.integer)
 736                                 time1 = Sys_DirtyTime();
 737                         R_TimeReport("pre-input");
 738
 739                         // Collect input into cmd
 740                         CL_Input();
 741
 742                         R_TimeReport("input");
 743
 744                         // check for new packets
 745                         NetConn_ClientFrame();
 746
 747                         // read a new frame from a demo if needed
 748                         CL_ReadDemoMessage();
 749                         R_TimeReport("clientnetwork");
 750
 751                         // now that packets have been read, send input to server
 752                         CL_SendMove();
 753                         R_TimeReport("sendmove");
 754
 755                         // update client world (interpolate entities, create trails, etc)
 756                         CL_UpdateWorld();
 757                         R_TimeReport("lerpworld");
 758
 759                         CL_Video_Frame();
 760
 761                         R_TimeReport("client");
 762
 763                         CL_UpdateScreen();
 764                         R_TimeReport("render");
 765
 766                         if (host_speeds.integer)
 767                                 time2 = Sys_DirtyTime();
 768
 769                         // update audio
 770                         if(cl.csqc_usecsqclistener)
 771                         {
 772                                 S_Update(&cl.csqc_listenermatrix);
 773                                 cl.csqc_usecsqclistener = false;
 774                         }
 775                         else
 776                                 S_Update(&r_refdef.view.matrix);
 777
 778                         CDAudio_Update();
 779                         R_TimeReport("audio");
 780
 781                         // reset gathering of mouse input
 782                         in_mouse_x = in_mouse_y = 0;
 783
 784                         if (host_speeds.integer)
 785                         {
 786                                 pass1 = (int)((time1 - time3)*1000000);
 787                                 time3 = Sys_DirtyTime();
 788                                 pass2 = (int)((time2 - time1)*1000000);
 789                                 pass3 = (int)((time3 - time2)*1000000);
 790                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 791                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 792                         }
 793                 }
 794
 795 #if MEMPARANOIA
 796                 Mem_CheckSentinelsGlobal();
 797 #else
 798                 if (developer_memorydebug.integer)
 799                         Mem_CheckSentinelsGlobal();
 800 #endif
 801
 802                 // if there is some time remaining from this frame, reset the timers
 803                 if (cl_timer >= 0)
 804                         cl_timer = 0;
 805                 if (sv_timer >= 0)
 806                 {
 807                         if (!svs.threaded)
 808                                 svs.perf_acc_lost += sv_timer;
 809                         sv_timer = 0;
 810                 }
 811
 812                 host.framecount++;
 813         }
 814
 815         Sys_Quit(0);
 816 }
 817
 818 //============================================================================
 819
 820 qboolean vid_opened = false;
 821 void Host_StartVideo(void)
 822 {
 823         if (!vid_opened && cls.state != ca_dedicated)
 824         {
 825                 vid_opened = true;
 826                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
 827                 NetConn_UpdateSockets();
 828                 VID_Start();
 829                 CDAudio_Startup();
 830         }
 831 }
 832
 833 char engineversion[128];
 834
 835 qboolean sys_nostdout = false;
 836
 837 static qfile_t *locksession_fh = NULL;
 838 static qboolean locksession_run = false;
 839 static void Host_InitSession(void)
 840 {
 841         int i;
 842         char *buf;
 843         Cvar_RegisterVariable(&sessionid);
 844         Cvar_RegisterVariable(&locksession);
 845
 846         // load the session ID into the read-only cvar
 847         if ((i = COM_CheckParm("-sessionid")) && (i + 1 < sys.argc))
 848         {
 849                 if(sys.argv[i+1][0] == '.')
 850                         Cvar_SetQuick(&sessionid, sys.argv[i+1]);
 851                 else
 852                 {
 853                         buf = (char *)Z_Malloc(strlen(sys.argv[i+1]) + 2);
 854                         dpsnprintf(buf, sizeof(buf), ".%s", sys.argv[i+1]);
 855                         Cvar_SetQuick(&sessionid, buf);
 856                 }
 857         }
 858 }
 859 void Host_LockSession(void)
 860 {
 861         if(locksession_run)
 862                 return;
 863         locksession_run = true;
 864         if(locksession.integer != 0 && !COM_CheckParm("-readonly"))
 865         {
 866                 char vabuf[1024];
 867                 char *p = va(vabuf, sizeof(vabuf), "%slock%s", *fs_userdir ? fs_userdir : fs_basedir, sessionid.string);
 868                 FS_CreatePath(p);
 869                 locksession_fh = FS_SysOpen(p, "wl", false);
 870                 // TODO maybe write the pid into the lockfile, while we are at it? may help server management tools
 871                 if(!locksession_fh)
 872                 {
 873                         if(locksession.integer == 2)
 874                         {
 875                                 Con_Printf(CON_WARN "WARNING: session lock %s could not be acquired. Please run with -sessionid and an unique session name. Continuing anyway.\n", p);
 876                         }
 877                         else
 878                         {
 879                                 Sys_Error("session lock %s could not be acquired. Please run with -sessionid and an unique session name.\n", p);
 880                         }
 881                 }
 882         }
 883 }
 884 void Host_UnlockSession(void)
 885 {
 886         if(!locksession_run)
 887                 return;
 888         locksession_run = false;
 889
 890         if(locksession_fh)
 891         {
 892                 FS_Close(locksession_fh);
 893                 // NOTE: we can NOT unlink the lock here, as doing so would
 894                 // create a race condition if another process created it
 895                 // between our close and our unlink
 896                 locksession_fh = NULL;
 897         }
 898 }
 899
 900 /*
 901 ====================
 902 Host_Init
 903 ====================
 904 */
 905 static void Host_Init (void)
 906 {
 907         int i;
 908         const char* os;
 909         char vabuf[1024];
 910         cmd_state_t *cmd = &cmd_client;
 911
 912         host.state = host_init;
 913
 914         if (COM_CheckParm("-profilegameonly"))
 915                 Sys_AllowProfiling(false);
 916
 917         // LadyHavoc: quake never seeded the random number generator before... heh
 918         if (COM_CheckParm("-benchmark"))
 919                 srand(0); // predictable random sequence for -benchmark
 920         else
 921                 srand((unsigned int)time(NULL));
 922
 923         // FIXME: this is evil, but possibly temporary
 924         // LadyHavoc: doesn't seem very temporary...
 925         // LadyHavoc: made this a saved cvar
 926 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 927         if (COM_CheckParm("-developer"))
 928         {
 929                 developer.value = developer.integer = 1;
 930                 developer.string = "1";
 931         }
 932
 933         if (COM_CheckParm("-developer2") || COM_CheckParm("-developer3"))
 934         {
 935                 developer.value = developer.integer = 1;
 936                 developer.string = "1";
 937                 developer_extra.value = developer_extra.integer = 1;
 938                 developer_extra.string = "1";
 939                 developer_insane.value = developer_insane.integer = 1;
 940                 developer_insane.string = "1";
 941                 developer_memory.value = developer_memory.integer = 1;
 942                 developer_memory.string = "1";
 943                 developer_memorydebug.value = developer_memorydebug.integer = 1;
 944                 developer_memorydebug.string = "1";
 945         }
 946
 947         if (COM_CheckParm("-developer3"))
 948         {
 949                 gl_paranoid.integer = 1;gl_paranoid.string = "1";
 950                 gl_printcheckerror.integer = 1;gl_printcheckerror.string = "1";
 951         }
 952
 953 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 954         if (COM_CheckParm("-nostdout"))
 955                 sys_nostdout = 1;
 956
 957         // used by everything
 958         Memory_Init();
 959
 960         // initialize console command/cvar/alias/command execution systems
 961         Cmd_Init();
 962
 963         // initialize memory subsystem cvars/commands
 964         Memory_Init_Commands();
 965
 966         // initialize console and logging and its cvars/commands
 967         Con_Init();
 968
 969         // initialize various cvars that could not be initialized earlier
 970         u8_Init();
 971         Curl_Init_Commands();
 972         Sys_Init_Commands();
 973         COM_Init_Commands();
 974
 975         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
 976         FS_Init();
 977
 978         // construct a version string for the corner of the console
 979         os = DP_OS_NAME;
 980         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
 981         Con_Printf("%s\n", engineversion);
 982
 983         // initialize process nice level
 984         Sys_InitProcessNice();
 985
 986         // initialize ixtable
 987         Mathlib_Init();
 988
 989         // register the cvars for session locking
 990         Host_InitSession();
 991
 992         // must be after FS_Init
 993         Crypto_Init();
 994         Crypto_Init_Commands();
 995
 996         NetConn_Init();
 997         Curl_Init();
 998         PRVM_Init();
 999         Mod_Init();
1000         World_Init();
1001         SV_Init();
1002         V_Init(); // some cvars needed by server player physics (cl_rollangle etc)
1003         Host_InitLocal();
1004         Host_ServerOptions();
1005
1006         Thread_Init();
1007         TaskQueue_Init();
1008
1009         CL_Init();
1010
1011         // save off current state of aliases, commands and cvars for later restore if FS_GameDir_f is called
1012         // NOTE: menu commands are freed by Cmd_RestoreInitState
1013         Cmd_SaveInitState();
1014
1015         // FIXME: put this into some neat design, but the menu should be allowed to crash
1016         // without crashing the whole game, so this should just be a short-time solution
1017
1018         // here comes the not so critical stuff
1019         if (setjmp(host.abortframe)) {
1020                 return;
1021         }
1022
1023         Host_AddConfigText(cmd);
1024
1025         Host_StartVideo();
1026
1027         // if quake.rc is missing, use default
1028         if (!FS_FileExists("quake.rc"))
1029         {
1030                 Cbuf_InsertText(cmd, "exec default.cfg\nexec " CONFIGFILENAME "\nexec autoexec.cfg\n");
1031                 Cbuf_Execute(cmd);
1032         }
1033
1034         host.state = host_active;
1035
1036         // run stuffcmds now, deferred previously because it can crash if a server starts that early
1037         Cbuf_AddText(cmd,"stuffcmds\n");
1038         Cbuf_Execute(cmd);
1039
1040         Log_Start();
1041
1042         // put up the loading image so the user doesn't stare at a black screen...
1043         SCR_BeginLoadingPlaque(true);
1044
1045         // check for special benchmark mode
1046 // COMMANDLINEOPTION: Client: -benchmark <demoname> runs a timedemo and quits, results of any timedemo can be found in gamedir/benchmark.log (for example id1/benchmark.log)
1047         i = COM_CheckParm("-benchmark");
1048         if (i && i + 1 < sys.argc)
1049         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1050         {
1051                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "timedemo %s\n", sys.argv[i + 1]));
1052                 Cbuf_Execute(&cmd_client);
1053         }
1054
1055         // check for special demo mode
1056 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1057         i = COM_CheckParm("-demo");
1058         if (i && i + 1 < sys.argc)
1059         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1060         {
1061                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "playdemo %s\n", sys.argv[i + 1]));
1062                 Cbuf_Execute(&cmd_client);
1063         }
1064
1065 #ifdef CONFIG_VIDEO_CAPTURE
1066 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1067         i = COM_CheckParm("-capturedemo");
1068         if (i && i + 1 < sys.argc)
1069         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1070         {
1071                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "playdemo %s\ncl_capturevideo 1\n", sys.argv[i + 1]));
1072                 Cbuf_Execute(&cmd_client);
1073         }
1074 #endif
1075
1076         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1077         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1078         {
1079                 Cbuf_AddText(&cmd_client, "startmap_dm\n");
1080                 Cbuf_Execute(&cmd_client);
1081         }
1082
1083         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1084         {
1085 #ifdef CONFIG_MENU
1086                 Cbuf_AddText(&cmd_client, "togglemenu 1\n");
1087 #endif
1088                 Cbuf_Execute(&cmd_client);
1089         }
1090
1091         Con_DPrint("========Initialized=========\n");
1092
1093         if (cls.state != ca_dedicated)
1094                 SV_StartThread();
1095 }
1096
1097
1098 /*
1099 ===============
1100 Host_Shutdown
1101
1102 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1103 to run quit through here before the final handoff to the sys code.
1104 ===============
1105 */
1106 void Host_Shutdown(void)
1107 {
1108         static qboolean isdown = false;
1109
1110         if (isdown)
1111         {
1112                 Con_Print("recursive shutdown\n");
1113                 return;
1114         }
1115         if (setjmp(host.abortframe))
1116         {
1117                 Con_Print("aborted the quitting frame?!?\n");
1118                 return;
1119         }
1120         isdown = true;
1121
1122         // be quiet while shutting down
1123         S_StopAllSounds();
1124
1125         // end the server thread
1126         if (svs.threaded)
1127                 SV_StopThread();
1128
1129         // disconnect client from server if active
1130         CL_Disconnect();
1131
1132         // shut down local server if active
1133         SV_LockThreadMutex();
1134         SV_Shutdown ();
1135         SV_UnlockThreadMutex();
1136
1137 #ifdef CONFIG_MENU
1138         // Shutdown menu
1139         if(MR_Shutdown)
1140                 MR_Shutdown();
1141 #endif
1142
1143         // AK shutdown PRVM
1144         // AK hmm, no PRVM_Shutdown(); yet
1145
1146         CL_Video_Shutdown();
1147
1148         Host_SaveConfig();
1149
1150         CDAudio_Shutdown ();
1151         S_Terminate ();
1152         Curl_Shutdown ();
1153         NetConn_Shutdown ();
1154
1155         if (cls.state != ca_dedicated)
1156         {
1157                 R_Modules_Shutdown();
1158                 VID_Shutdown();
1159         }
1160
1161         SV_StopThread();
1162         TaskQueue_Shutdown();
1163         Thread_Shutdown();
1164         Cmd_Shutdown();
1165         Key_Shutdown();
1166         CL_Shutdown();
1167         Sys_Shutdown();
1168         Log_Close();
1169         Crypto_Shutdown();
1170
1171         Host_UnlockSession();
1172
1173         S_Shutdown();
1174         Con_Shutdown();
1175         Memory_Shutdown();
1176 }
1177
1178 void Host_NoOperation_f(cmd_state_t *cmd)
1179 {
1180 }