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 = oldtime = 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                 newtime = host.dirtytime = Sys_DirtyTime();
 427                 time = newtime - oldtime;
 428                 if (time < 0)
 429                 {
 430                         // warn if it's significant
 431                         if (time < -0.01)
 432                                 Con_Printf(CON_WARN "Host_Mingled: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, time);
 433                         time = 0;
 434                 }
 435                 else if (time >= 1800)
 436                 {
 437                         Con_Printf(CON_WARN "Host_Mingled: time stepped forward (went from %f to %f, difference %f)\n", oldtime, newtime, time);
 438                         time = 0;
 439                 }
 440                 host.realtime += time;
 441
 442                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 443                         Cvar_SetValueQuick(&host_framerate, 0);
 444
 445                 TaskQueue_Frame(false);
 446
 447                 // keep the random time dependent, but not when playing demos/benchmarking
 448                 if(!*sv_random_seed.string && !cls.demoplayback)
 449                         rand();
 450
 451                 NetConn_UpdateSockets();
 452
 453                 Log_DestBuffer_Flush();
 454
 455                 Curl_Run();
 456
 457                 // check for commands typed to the host
 458                 Host_GetConsoleCommands();
 459
 460                 // process console commands
 461 //              R_TimeReport("preconsole");
 462                 CL_VM_PreventInformationLeaks();
 463                 Cbuf_Frame(&cmd_client);
 464                 Cbuf_Frame(&cmd_server);
 465
 466                 if(sv.active)
 467                         Cbuf_Frame(&cmd_serverfromclient);
 468
 469 //              R_TimeReport("console");
 470
 471                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 472
 473                 R_TimeReport("---");
 474
 475         //-------------------
 476         //
 477         // server operations
 478         //
 479         //-------------------
 480
 481                 // limit the frametime steps to no more than 100ms each
 482                 if (sv_timer > 0.1)
 483                 {
 484                         if (!svs.threaded)
 485                                 svs.perf_acc_lost += (sv_timer - 0.1);
 486                         sv_timer = 0.1;
 487                 }
 488
 489                 if (!svs.threaded)
 490                 {
 491                         svs.perf_acc_sleeptime = host.sleeptime;
 492                         svs.perf_acc_realtime += time;
 493
 494                         // Look for clients who have spawned
 495                         playing = false;
 496                         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 497                                 if(host_client->begun)
 498                                         if(host_client->netconnection)
 499                                                 playing = true;
 500                         if(sv.time < 10)
 501                         {
 502                                 // don't accumulate time for the first 10 seconds of a match
 503                                 // so things can settle
 504                                 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;
 505                         }
 506                         else if(svs.perf_acc_realtime > 5)
 507                         {
 508                                 svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 509                                 svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 510                                 if(svs.perf_acc_offset_samples > 0)
 511                                 {
 512                                         svs.perf_offset_max = svs.perf_acc_offset_max;
 513                                         svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 514                                         svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 515                                 }
 516                                 if(svs.perf_lost > 0 && developer_extra.integer)
 517                                         if(playing) // only complain if anyone is looking
 518                                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport(vabuf, sizeof(vabuf)));
 519                                 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;
 520                         }
 521
 522                         if (sv.active && sv_timer > 0)
 523                         {
 524                                 // execute one or more server frames, with an upper limit on how much
 525                                 // execution time to spend on server frames to avoid freezing the game if
 526                                 // the server is overloaded, this execution time limit means the game will
 527                                 // slow down if the server is taking too long.
 528                                 int framecount, framelimit = 1;
 529                                 double advancetime, aborttime = 0;
 530                                 float offset;
 531                                 prvm_prog_t *prog = SVVM_prog;
 532                                 // receive packets on each main loop iteration, as the main loop may
 533                                 // be undersleeping due to select() detecting a new packet
 534                                 if (sv.active && !svs.threaded)
 535                                         NetConn_ServerFrame();
 536                                 // run the world state
 537                                 // don't allow simulation to run too fast or too slow or logic glitches can occur
 538
 539                                 // stop running server frames if the wall time reaches this value
 540                                 if (sys_ticrate.value <= 0)
 541                                         advancetime = sv_timer;
 542                                 else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 543                                 {
 544                                         // synchronize to the client frametime, but no less than 10ms and no more than 100ms
 545                                         advancetime = bound(0.01, cl_timer, 0.1);
 546                                 }
 547                                 else
 548                                 {
 549                                         advancetime = sys_ticrate.value;
 550                                         // listen servers can run multiple server frames per client frame
 551                                         framelimit = cl_maxphysicsframesperserverframe.integer;
 552                                         aborttime = Sys_DirtyTime() + 0.1;
 553                                 }
 554                                 if(host_timescale.value > 0 && host_timescale.value < 1)
 555                                         advancetime = min(advancetime, 0.1 / host_timescale.value);
 556                                 else
 557                                         advancetime = min(advancetime, 0.1);
 558
 559                                 if(advancetime > 0)
 560                                 {
 561                                         offset = Sys_DirtyTime() - newtime;if (offset < 0 || offset >= 1800) offset = 0;
 562                                         offset += sv_timer;
 563                                         ++svs.perf_acc_offset_samples;
 564                                         svs.perf_acc_offset += offset;
 565                                         svs.perf_acc_offset_squared += offset * offset;
 566                                         if(svs.perf_acc_offset_max < offset)
 567                                                 svs.perf_acc_offset_max = offset;
 568                                 }
 569
 570                                 // only advance time if not paused
 571                                 // the game also pauses in singleplayer when menu or console is used
 572                                 sv.frametime = advancetime * host_timescale.value;
 573                                 if (host_framerate.value)
 574                                         sv.frametime = host_framerate.value;
 575                                 if (sv.paused || host.paused)
 576                                         sv.frametime = 0;
 577
 578                                 for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 579                                 {
 580                                         sv_timer -= advancetime;
 581
 582                                         // move things around and think unless paused
 583                                         if (sv.frametime)
 584                                                 SV_Physics();
 585
 586                                         // if this server frame took too long, break out of the loop
 587                                         if (framelimit > 1 && Sys_DirtyTime() >= aborttime)
 588                                                 break;
 589                                 }
 590                                 R_TimeReport("serverphysics");
 591
 592                                 // send all messages to the clients
 593                                 SV_SendClientMessages();
 594
 595                                 if (sv.paused == 1 && host.realtime > sv.pausedstart && sv.pausedstart > 0) {
 596                                         prog->globals.fp[OFS_PARM0] = host.realtime - sv.pausedstart;
 597                                         PRVM_serverglobalfloat(time) = sv.time;
 598                                         prog->ExecuteProgram(prog, PRVM_serverfunction(SV_PausedTic), "QC function SV_PausedTic is missing");
 599                                 }
 600
 601                                 // send an heartbeat if enough time has passed since the last one
 602                                 NetConn_Heartbeat(0);
 603                                 R_TimeReport("servernetwork");
 604                         }
 605                         else
 606                         {
 607                                 // don't let r_speeds display jump around
 608                                 R_TimeReport("serverphysics");
 609                                 R_TimeReport("servernetwork");
 610                         }
 611                 }
 612                 // if there is some time remaining from this frame, reset the timer
 613                 if (sv_timer >= 0)
 614                 {
 615                         if (!svs.threaded)
 616                                 svs.perf_acc_lost += sv_timer;
 617                         sv_timer = 0;
 618                 }
 619
 620                 sv_timer += time;
 621
 622         //-------------------
 623         //
 624         // client operations
 625         //
 626         //-------------------
 627
 628                 // limit the frametime steps to no more than 100ms each
 629                 if (cl_timer > 0.1)
 630                         cl_timer = 0.1;
 631
 632                 // get new key events
 633                 Key_EventQueue_Unblock();
 634                 SndSys_SendKeyEvents();
 635                 Sys_SendKeyEvents();
 636
 637                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))
 638                 {
 639                         R_TimeReport("---");
 640                         Collision_Cache_NewFrame();
 641                         R_TimeReport("photoncache");
 642 #ifdef CONFIG_VIDEO_CAPTURE
 643                         // decide the simulation time
 644                         if (cls.capturevideo.active)
 645                         {
 646                                 //***
 647                                 if (cls.capturevideo.realtime)
 648                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 649                                 else
 650                                 {
 651                                         clframetime = 1.0 / cls.capturevideo.framerate;
 652                                         cl.realframetime = max(cl_timer, clframetime);
 653                                 }
 654                         }
 655                         else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
 656
 657 #else
 658                         if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
 659 #endif
 660                         {
 661                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
 662                                 // when running slow, we need to sleep to keep input responsive
 663                                 wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);
 664                                 if (wait > 0)
 665                                         Sys_Sleep((int)wait);
 666                         }
 667                         else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)
 668                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
 669                         else
 670                                 clframetime = cl.realframetime = cl_timer;
 671
 672                         // apply slowmo scaling
 673                         clframetime *= cl.movevars_timescale;
 674                         // scale playback speed of demos by slowmo cvar
 675                         if (cls.demoplayback)
 676                         {
 677                                 clframetime *= host_timescale.value;
 678                                 // if demo playback is paused, don't advance time at all
 679                                 if (cls.demopaused)
 680                                         clframetime = 0;
 681                         }
 682                         else
 683                         {
 684                                 // host_framerate overrides all else
 685                                 if (host_framerate.value)
 686                                         clframetime = host_framerate.value;
 687
 688                                 if (cl.paused || host.paused)
 689                                         clframetime = 0;
 690                         }
 691
 692                         if (cls.timedemo)
 693                                 clframetime = cl.realframetime = cl_timer;
 694
 695                         // deduct the frame time from the accumulator
 696                         cl_timer -= cl.realframetime;
 697
 698                         cl.oldtime = cl.time;
 699                         cl.time += clframetime;
 700
 701                         // update video
 702                         if (host_speeds.integer)
 703                                 time1 = Sys_DirtyTime();
 704                         R_TimeReport("pre-input");
 705
 706                         // Collect input into cmd
 707                         CL_Input();
 708
 709                         R_TimeReport("input");
 710
 711                         // check for new packets
 712                         NetConn_ClientFrame();
 713
 714                         // read a new frame from a demo if needed
 715                         CL_ReadDemoMessage();
 716                         R_TimeReport("clientnetwork");
 717
 718                         // now that packets have been read, send input to server
 719                         CL_SendMove();
 720                         R_TimeReport("sendmove");
 721
 722                         // update client world (interpolate entities, create trails, etc)
 723                         CL_UpdateWorld();
 724                         R_TimeReport("lerpworld");
 725
 726                         CL_Video_Frame();
 727
 728                         R_TimeReport("client");
 729
 730                         CL_UpdateScreen();
 731                         R_TimeReport("render");
 732
 733                         if (host_speeds.integer)
 734                                 time2 = Sys_DirtyTime();
 735
 736                         // update audio
 737                         if(cl.csqc_usecsqclistener)
 738                         {
 739                                 S_Update(&cl.csqc_listenermatrix);
 740                                 cl.csqc_usecsqclistener = false;
 741                         }
 742                         else
 743                                 S_Update(&r_refdef.view.matrix);
 744
 745                         CDAudio_Update();
 746                         R_TimeReport("audio");
 747
 748                         // reset gathering of mouse input
 749                         in_mouse_x = in_mouse_y = 0;
 750
 751                         if (host_speeds.integer)
 752                         {
 753                                 pass1 = (int)((time1 - time3)*1000000);
 754                                 time3 = Sys_DirtyTime();
 755                                 pass2 = (int)((time2 - time1)*1000000);
 756                                 pass3 = (int)((time3 - time2)*1000000);
 757                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 758                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 759                         }
 760                 }
 761
 762                 // if there is some time remaining from this frame, reset the timer
 763                 if (cl_timer >= 0)
 764                         cl_timer = 0;
 765
 766                 cl_timer += time;
 767
 768 #if MEMPARANOIA
 769                 Mem_CheckSentinelsGlobal();
 770 #else
 771                 if (developer_memorydebug.integer)
 772                         Mem_CheckSentinelsGlobal();
 773 #endif
 774
 775                 // if the accumulators haven't become positive yet, wait a while
 776                 wait = max(cl_timer, sv_timer) * -1000000.0;
 777
 778                 if (!host.restless && wait >= 1)
 779                 {
 780                         double time0, delta;
 781
 782                         if(host_maxwait.value <= 0)
 783                                 wait = min(wait, 1000000.0);
 784                         else
 785                                 wait = min(wait, host_maxwait.value * 1000.0);
 786                         if(wait < 1)
 787                                 wait = 1; // because we cast to int
 788
 789                         time0 = Sys_DirtyTime();
 790                         if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer && !svs.threaded) {
 791                                 NetConn_SleepMicroseconds((int)wait);
 792                                 if (cls.state != ca_dedicated)
 793                                         NetConn_ClientFrame(); // helps server browser get good ping values
 794                                 // TODO can we do the same for ServerFrame? Probably not.
 795                         }
 796                         else
 797                                 Sys_Sleep((int)wait);
 798                         delta = Sys_DirtyTime() - time0;
 799                         if (delta < 0 || delta >= 1800)
 800                                 delta = 0;
 801                         host.sleeptime += delta;
 802 //                      R_TimeReport("sleep");
 803                 }
 804
 805                 host.framecount++;
 806                 oldtime = newtime;
 807         }
 808
 809         Sys_Quit(0);
 810 }
 811
 812 //============================================================================
 813
 814 qboolean vid_opened = false;
 815 void Host_StartVideo(void)
 816 {
 817         if (!vid_opened && cls.state != ca_dedicated)
 818         {
 819                 vid_opened = true;
 820                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
 821                 NetConn_UpdateSockets();
 822                 VID_Start();
 823                 CDAudio_Startup();
 824         }
 825 }
 826
 827 char engineversion[128];
 828
 829 qboolean sys_nostdout = false;
 830
 831 static qfile_t *locksession_fh = NULL;
 832 static qboolean locksession_run = false;
 833 static void Host_InitSession(void)
 834 {
 835         int i;
 836         char *buf;
 837         Cvar_RegisterVariable(&sessionid);
 838         Cvar_RegisterVariable(&locksession);
 839
 840         // load the session ID into the read-only cvar
 841         if ((i = COM_CheckParm("-sessionid")) && (i + 1 < sys.argc))
 842         {
 843                 if(sys.argv[i+1][0] == '.')
 844                         Cvar_SetQuick(&sessionid, sys.argv[i+1]);
 845                 else
 846                 {
 847                         buf = (char *)Z_Malloc(strlen(sys.argv[i+1]) + 2);
 848                         dpsnprintf(buf, sizeof(buf), ".%s", sys.argv[i+1]);
 849                         Cvar_SetQuick(&sessionid, buf);
 850                 }
 851         }
 852 }
 853 void Host_LockSession(void)
 854 {
 855         if(locksession_run)
 856                 return;
 857         locksession_run = true;
 858         if(locksession.integer != 0 && !COM_CheckParm("-readonly"))
 859         {
 860                 char vabuf[1024];
 861                 char *p = va(vabuf, sizeof(vabuf), "%slock%s", *fs_userdir ? fs_userdir : fs_basedir, sessionid.string);
 862                 FS_CreatePath(p);
 863                 locksession_fh = FS_SysOpen(p, "wl", false);
 864                 // TODO maybe write the pid into the lockfile, while we are at it? may help server management tools
 865                 if(!locksession_fh)
 866                 {
 867                         if(locksession.integer == 2)
 868                         {
 869                                 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);
 870                         }
 871                         else
 872                         {
 873                                 Sys_Error("session lock %s could not be acquired. Please run with -sessionid and an unique session name.\n", p);
 874                         }
 875                 }
 876         }
 877 }
 878 void Host_UnlockSession(void)
 879 {
 880         if(!locksession_run)
 881                 return;
 882         locksession_run = false;
 883
 884         if(locksession_fh)
 885         {
 886                 FS_Close(locksession_fh);
 887                 // NOTE: we can NOT unlink the lock here, as doing so would
 888                 // create a race condition if another process created it
 889                 // between our close and our unlink
 890                 locksession_fh = NULL;
 891         }
 892 }
 893
 894 /*
 895 ====================
 896 Host_Init
 897 ====================
 898 */
 899 static void Host_Init (void)
 900 {
 901         int i;
 902         const char* os;
 903         char vabuf[1024];
 904         cmd_state_t *cmd = &cmd_client;
 905
 906         host.state = host_init;
 907
 908         if (COM_CheckParm("-profilegameonly"))
 909                 Sys_AllowProfiling(false);
 910
 911         // LadyHavoc: quake never seeded the random number generator before... heh
 912         if (COM_CheckParm("-benchmark"))
 913                 srand(0); // predictable random sequence for -benchmark
 914         else
 915                 srand((unsigned int)time(NULL));
 916
 917         // FIXME: this is evil, but possibly temporary
 918         // LadyHavoc: doesn't seem very temporary...
 919         // LadyHavoc: made this a saved cvar
 920 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 921         if (COM_CheckParm("-developer"))
 922         {
 923                 developer.value = developer.integer = 1;
 924                 developer.string = "1";
 925         }
 926
 927         if (COM_CheckParm("-developer2") || COM_CheckParm("-developer3"))
 928         {
 929                 developer.value = developer.integer = 1;
 930                 developer.string = "1";
 931                 developer_extra.value = developer_extra.integer = 1;
 932                 developer_extra.string = "1";
 933                 developer_insane.value = developer_insane.integer = 1;
 934                 developer_insane.string = "1";
 935                 developer_memory.value = developer_memory.integer = 1;
 936                 developer_memory.string = "1";
 937                 developer_memorydebug.value = developer_memorydebug.integer = 1;
 938                 developer_memorydebug.string = "1";
 939         }
 940
 941         if (COM_CheckParm("-developer3"))
 942         {
 943                 gl_paranoid.integer = 1;gl_paranoid.string = "1";
 944                 gl_printcheckerror.integer = 1;gl_printcheckerror.string = "1";
 945         }
 946
 947 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 948         if (COM_CheckParm("-nostdout"))
 949                 sys_nostdout = 1;
 950
 951         // used by everything
 952         Memory_Init();
 953
 954         // initialize console command/cvar/alias/command execution systems
 955         Cmd_Init();
 956
 957         // initialize memory subsystem cvars/commands
 958         Memory_Init_Commands();
 959
 960         // initialize console and logging and its cvars/commands
 961         Con_Init();
 962
 963         // initialize various cvars that could not be initialized earlier
 964         u8_Init();
 965         Curl_Init_Commands();
 966         Sys_Init_Commands();
 967         COM_Init_Commands();
 968
 969         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
 970         FS_Init();
 971
 972         // construct a version string for the corner of the console
 973         os = DP_OS_NAME;
 974         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
 975         Con_Printf("%s\n", engineversion);
 976
 977         // initialize process nice level
 978         Sys_InitProcessNice();
 979
 980         // initialize ixtable
 981         Mathlib_Init();
 982
 983         // register the cvars for session locking
 984         Host_InitSession();
 985
 986         // must be after FS_Init
 987         Crypto_Init();
 988         Crypto_Init_Commands();
 989
 990         NetConn_Init();
 991         Curl_Init();
 992         PRVM_Init();
 993         Mod_Init();
 994         World_Init();
 995         SV_Init();
 996         V_Init(); // some cvars needed by server player physics (cl_rollangle etc)
 997         Host_InitLocal();
 998         Host_ServerOptions();
 999
1000         Thread_Init();
1001         TaskQueue_Init();
1002
1003         CL_Init();
1004
1005         // save off current state of aliases, commands and cvars for later restore if FS_GameDir_f is called
1006         // NOTE: menu commands are freed by Cmd_RestoreInitState
1007         Cmd_SaveInitState();
1008
1009         // FIXME: put this into some neat design, but the menu should be allowed to crash
1010         // without crashing the whole game, so this should just be a short-time solution
1011
1012         // here comes the not so critical stuff
1013         if (setjmp(host.abortframe)) {
1014                 return;
1015         }
1016
1017         Host_AddConfigText(cmd);
1018
1019         Host_StartVideo();
1020
1021         // if quake.rc is missing, use default
1022         if (!FS_FileExists("quake.rc"))
1023         {
1024                 Cbuf_InsertText(cmd, "exec default.cfg\nexec " CONFIGFILENAME "\nexec autoexec.cfg\n");
1025                 Cbuf_Execute(cmd);
1026         }
1027
1028         host.state = host_active;
1029
1030         // run stuffcmds now, deferred previously because it can crash if a server starts that early
1031         Cbuf_AddText(cmd,"stuffcmds\n");
1032         Cbuf_Execute(cmd);
1033
1034         Log_Start();
1035
1036         // put up the loading image so the user doesn't stare at a black screen...
1037         SCR_BeginLoadingPlaque(true);
1038
1039         // check for special benchmark mode
1040 // 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)
1041         i = COM_CheckParm("-benchmark");
1042         if (i && i + 1 < sys.argc)
1043         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1044         {
1045                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "timedemo %s\n", sys.argv[i + 1]));
1046                 Cbuf_Execute(&cmd_client);
1047         }
1048
1049         // check for special demo mode
1050 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1051         i = COM_CheckParm("-demo");
1052         if (i && i + 1 < sys.argc)
1053         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1054         {
1055                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "playdemo %s\n", sys.argv[i + 1]));
1056                 Cbuf_Execute(&cmd_client);
1057         }
1058
1059 #ifdef CONFIG_VIDEO_CAPTURE
1060 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1061         i = COM_CheckParm("-capturedemo");
1062         if (i && i + 1 < sys.argc)
1063         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1064         {
1065                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "playdemo %s\ncl_capturevideo 1\n", sys.argv[i + 1]));
1066                 Cbuf_Execute(&cmd_client);
1067         }
1068 #endif
1069
1070         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1071         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1072         {
1073                 Cbuf_AddText(&cmd_client, "startmap_dm\n");
1074                 Cbuf_Execute(&cmd_client);
1075         }
1076
1077         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1078         {
1079 #ifdef CONFIG_MENU
1080                 Cbuf_AddText(&cmd_client, "togglemenu 1\n");
1081 #endif
1082                 Cbuf_Execute(&cmd_client);
1083         }
1084
1085         Con_DPrint("========Initialized=========\n");
1086
1087         if (cls.state != ca_dedicated)
1088                 SV_StartThread();
1089 }
1090
1091
1092 /*
1093 ===============
1094 Host_Shutdown
1095
1096 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1097 to run quit through here before the final handoff to the sys code.
1098 ===============
1099 */
1100 void Host_Shutdown(void)
1101 {
1102         static qboolean isdown = false;
1103
1104         if (isdown)
1105         {
1106                 Con_Print("recursive shutdown\n");
1107                 return;
1108         }
1109         if (setjmp(host.abortframe))
1110         {
1111                 Con_Print("aborted the quitting frame?!?\n");
1112                 return;
1113         }
1114         isdown = true;
1115
1116         // be quiet while shutting down
1117         S_StopAllSounds();
1118
1119         // end the server thread
1120         if (svs.threaded)
1121                 SV_StopThread();
1122
1123         // disconnect client from server if active
1124         CL_Disconnect();
1125
1126         // shut down local server if active
1127         SV_LockThreadMutex();
1128         SV_Shutdown ();
1129         SV_UnlockThreadMutex();
1130
1131 #ifdef CONFIG_MENU
1132         // Shutdown menu
1133         if(MR_Shutdown)
1134                 MR_Shutdown();
1135 #endif
1136
1137         // AK shutdown PRVM
1138         // AK hmm, no PRVM_Shutdown(); yet
1139
1140         CL_Video_Shutdown();
1141
1142         Host_SaveConfig();
1143
1144         CDAudio_Shutdown ();
1145         S_Terminate ();
1146         Curl_Shutdown ();
1147         NetConn_Shutdown ();
1148
1149         if (cls.state != ca_dedicated)
1150         {
1151                 R_Modules_Shutdown();
1152                 VID_Shutdown();
1153         }
1154
1155         SV_StopThread();
1156         TaskQueue_Shutdown();
1157         Thread_Shutdown();
1158         Cmd_Shutdown();
1159         Key_Shutdown();
1160         CL_Shutdown();
1161         Sys_Shutdown();
1162         Log_Close();
1163         Crypto_Shutdown();
1164
1165         Host_UnlockSession();
1166
1167         S_Shutdown();
1168         Con_Shutdown();
1169         Memory_Shutdown();
1170 }
1171
1172 void Host_NoOperation_f(cmd_state_t *cmd)
1173 {
1174 }