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
  56 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"};
  57 cvar_t developer_extra = {CVAR_CLIENT | CVAR_SERVER, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};
  58 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!"};
  59 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)"};
  60 cvar_t developer_loading = {CVAR_CLIENT | CVAR_SERVER, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
  61 cvar_t developer_entityparsing = {CVAR_CLIENT, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  62
  63 cvar_t timestamps = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  64 cvar_t timeformat = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  65
  66 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 (.)"};
  67 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"};
  68
  69 /*
  70 ================
  71 Host_AbortCurrentFrame
  72
  73 aborts the current host frame and goes on with the next one
  74 ================
  75 */
  76 void Host_AbortCurrentFrame(void) DP_FUNC_NORETURN;
  77 void Host_AbortCurrentFrame(void)
  78 {
  79         // in case we were previously nice, make us mean again
  80         Sys_MakeProcessMean();
  81
  82         longjmp (host.abortframe, 1);
  83 }
  84
  85 /*
  86 ================
  87 Host_Error
  88
  89 This shuts down both the client and server
  90 ================
  91 */
  92 void Host_Error (const char *error, ...)
  93 {
  94         static char hosterrorstring1[MAX_INPUTLINE]; // THREAD UNSAFE
  95         static char hosterrorstring2[MAX_INPUTLINE]; // THREAD UNSAFE
  96         static qboolean hosterror = false;
  97         va_list argptr;
  98
  99         // turn off rcon redirect if it was active when the crash occurred
 100         // to prevent loops when it is a networking problem
 101         Con_Rcon_Redirect_Abort();
 102
 103         va_start (argptr,error);
 104         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 105         va_end (argptr);
 106
 107         Con_Printf(CON_ERROR "Host_Error: %s\n", hosterrorstring1);
 108
 109         // LadyHavoc: if crashing very early, or currently shutting down, do
 110         // Sys_Error instead
 111         if (host.framecount < 3 || host.state == host_shutdown)
 112                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 113
 114         if (hosterror)
 115                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 116         hosterror = true;
 117
 118         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 119
 120         CL_Parse_DumpPacket();
 121
 122         CL_Parse_ErrorCleanUp();
 123
 124         //PR_Crash();
 125
 126         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 127         PRVM_Crash(SVVM_prog);
 128         PRVM_Crash(CLVM_prog);
 129 #ifdef CONFIG_MENU
 130         PRVM_Crash(MVM_prog);
 131 #endif
 132
 133         cl.csqc_loaded = false;
 134         Cvar_SetValueQuick(&csqc_progcrc, -1);
 135         Cvar_SetValueQuick(&csqc_progsize, -1);
 136
 137         SV_LockThreadMutex();
 138         SV_Shutdown ();
 139         SV_UnlockThreadMutex();
 140
 141         if (cls.state == ca_dedicated)
 142                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 143
 144         CL_Disconnect ();
 145         cls.demonum = -1;
 146
 147         hosterror = false;
 148
 149         Host_AbortCurrentFrame();
 150 }
 151
 152 static void Host_ServerOptions (void)
 153 {
 154         int i;
 155
 156         // general default
 157         svs.maxclients = 8;
 158
 159 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 160 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 161         // if no client is in the executable or -dedicated is specified on
 162         // commandline, start a dedicated server
 163         i = COM_CheckParm ("-dedicated");
 164         if (i || !cl_available)
 165         {
 166                 cls.state = ca_dedicated;
 167                 // check for -dedicated specifying how many players
 168                 if (i && i + 1 < sys.argc && atoi (sys.argv[i+1]) >= 1)
 169                         svs.maxclients = atoi (sys.argv[i+1]);
 170                 if (COM_CheckParm ("-listen"))
 171                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 172                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 173                 Cvar_SetValue(&cvars_all, "sv_public", 1);
 174         }
 175         else if (cl_available)
 176         {
 177                 // client exists and not dedicated, check if -listen is specified
 178                 cls.state = ca_disconnected;
 179                 i = COM_CheckParm ("-listen");
 180                 if (i)
 181                 {
 182                         // default players unless specified
 183                         if (i + 1 < sys.argc && atoi (sys.argv[i+1]) >= 1)
 184                                 svs.maxclients = atoi (sys.argv[i+1]);
 185                 }
 186                 else
 187                 {
 188                         // default players in some games, singleplayer in most
 189                         if (gamemode != GAME_GOODVSBAD2 && !IS_NEXUIZ_DERIVED(gamemode) && gamemode != GAME_BATTLEMECH)
 190                                 svs.maxclients = 1;
 191                 }
 192         }
 193
 194         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
 195
 196         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 197
 198         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 199                 Cvar_SetValueQuick(&deathmatch, 1);
 200 }
 201
 202 /*
 203 ==================
 204 Host_Quit_f
 205 ==================
 206 */
 207 void Host_Quit_f(cmd_state_t *cmd)
 208 {
 209         if(host.state == host_shutdown)
 210                 Con_Printf("shutting down already!\n");
 211         else
 212                 host.state = host_shutdown;
 213 }
 214
 215 static void Host_Version_f(cmd_state_t *cmd)
 216 {
 217         Con_Printf("Version: %s build %s\n", gamename, buildstring);
 218 }
 219
 220 /*
 221 =======================
 222 Host_InitLocal
 223 ======================
 224 */
 225 void Host_SaveConfig_f(cmd_state_t *cmd);
 226 void Host_LoadConfig_f(cmd_state_t *cmd);
 227 extern cvar_t sv_writepicture_quality;
 228 extern cvar_t r_texture_jpeg_fastpicmip;
 229 static void Host_InitLocal (void)
 230 {
 231         Cmd_AddCommand(CMD_SHARED, "quit", Host_Quit_f, "quit the game");
 232         Cmd_AddCommand(CMD_SHARED, "version", Host_Version_f, "print engine version");
 233         Cmd_AddCommand(CMD_SHARED, "saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 234         Cmd_AddCommand(CMD_SHARED, "loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 235         Cvar_RegisterVariable (&cl_maxphysicsframesperserverframe);
 236         Cvar_RegisterVariable (&host_framerate);
 237         Cvar_RegisterVariable (&host_speeds);
 238         Cvar_RegisterVariable (&host_maxwait);
 239
 240         Cvar_RegisterVariable (&developer);
 241         Cvar_RegisterVariable (&developer_extra);
 242         Cvar_RegisterVariable (&developer_insane);
 243         Cvar_RegisterVariable (&developer_loadfile);
 244         Cvar_RegisterVariable (&developer_loading);
 245         Cvar_RegisterVariable (&developer_entityparsing);
 246
 247         Cvar_RegisterVariable (&timestamps);
 248         Cvar_RegisterVariable (&timeformat);
 249
 250         Cvar_RegisterVariable (&sv_writepicture_quality);
 251         Cvar_RegisterVariable (&r_texture_jpeg_fastpicmip);
 252 }
 253
 254
 255 /*
 256 ===============
 257 Host_SaveConfig_f
 258
 259 Writes key bindings and archived cvars to config.cfg
 260 ===============
 261 */
 262 static void Host_SaveConfig_to(const char *file)
 263 {
 264         qfile_t *f;
 265
 266 // dedicated servers initialize the host but don't parse and set the
 267 // config.cfg cvars
 268         // LadyHavoc: don't save a config if it crashed in startup
 269         if (host.framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 270         {
 271                 f = FS_OpenRealFile(file, "wb", false);
 272                 if (!f)
 273                 {
 274                         Con_Printf(CON_ERROR "Couldn't write %s.\n", file);
 275                         return;
 276                 }
 277
 278                 Key_WriteBindings (f);
 279                 Cvar_WriteVariables (&cvars_all, f);
 280
 281                 FS_Close (f);
 282         }
 283 }
 284 void Host_SaveConfig(void)
 285 {
 286         Host_SaveConfig_to(CONFIGFILENAME);
 287 }
 288 void Host_SaveConfig_f(cmd_state_t *cmd)
 289 {
 290         const char *file = CONFIGFILENAME;
 291
 292         if(Cmd_Argc(cmd) >= 2) {
 293                 file = Cmd_Argv(cmd, 1);
 294                 Con_Printf("Saving to %s\n", file);
 295         }
 296
 297         Host_SaveConfig_to(file);
 298 }
 299
 300 static void Host_AddConfigText(cmd_state_t *cmd)
 301 {
 302         // set up the default startmap_sp and startmap_dm aliases (mods can
 303         // override these) and then execute the quake.rc startup script
 304         if (gamemode == GAME_NEHAHRA)
 305                 Cbuf_InsertText(cmd, "alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec " STARTCONFIGFILENAME "\n");
 306         else if (gamemode == GAME_TRANSFUSION)
 307                 Cbuf_InsertText(cmd, "alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec " STARTCONFIGFILENAME "\n");
 308         else if (gamemode == GAME_TEU)
 309                 Cbuf_InsertText(cmd, "alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
 310         else
 311                 Cbuf_InsertText(cmd, "alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec " STARTCONFIGFILENAME "\n");
 312         Cbuf_Execute(cmd);
 313 }
 314
 315 /*
 316 ===============
 317 Host_LoadConfig_f
 318
 319 Resets key bindings and cvars to defaults and then reloads scripts
 320 ===============
 321 */
 322 void Host_LoadConfig_f(cmd_state_t *cmd)
 323 {
 324         // reset all cvars, commands and aliases to init values
 325         Cmd_RestoreInitState();
 326 #ifdef CONFIG_MENU
 327         // prepend a menu restart command to execute after the config
 328         Cbuf_InsertText(&cmd_client, "\nmenu_restart\n");
 329 #endif
 330         // reset cvars to their defaults, and then exec startup scripts again
 331         Host_AddConfigText(&cmd_client);
 332 }
 333
 334 //============================================================================
 335
 336 /*
 337 ===================
 338 Host_GetConsoleCommands
 339
 340 Add them exactly as if they had been typed at the console
 341 ===================
 342 */
 343 static void Host_GetConsoleCommands (void)
 344 {
 345         char *line;
 346
 347         while ((line = Sys_ConsoleInput()))
 348         {
 349                 if (cls.state == ca_dedicated)
 350                         Cbuf_AddText(&cmd_server, line);
 351                 else
 352                         Cbuf_AddText(&cmd_client, line);
 353         }
 354 }
 355
 356 /*
 357 ==================
 358 Host_TimeReport
 359
 360 Returns a time report string, for example for
 361 ==================
 362 */
 363 const char *Host_TimingReport(char *buf, size_t buflen)
 364 {
 365         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);
 366 }
 367
 368 /*
 369 ==================
 370 Host_Frame
 371
 372 Runs all active servers
 373 ==================
 374 */
 375 static void Host_Init(void);
 376 void Host_Main(void)
 377 {
 378         double cl_timer = 0, sv_timer = 0;
 379         double time, oldtime, newtime;
 380         double wait;
 381         int i;
 382         char vabuf[1024];
 383         qboolean playing;
 384
 385         host.restless = false;
 386
 387         Host_Init();
 388
 389         host.realtime = 0;
 390         host.sleeptime = 0;
 391         host.dirtytime = oldtime = Sys_DirtyTime();
 392
 393         while(host.state != host_shutdown)
 394         {
 395                 if (setjmp(host.abortframe))
 396                 {
 397                         SCR_ClearLoadingScreen(false);
 398                         continue;                       // something bad happened, or the server disconnected
 399                 }
 400
 401                 newtime = host.dirtytime = Sys_DirtyTime();
 402                 time = newtime - oldtime;
 403                 if (time < 0)
 404                 {
 405                         // warn if it's significant
 406                         if (time < -0.01)
 407                                 Con_Printf(CON_WARN "Host_Mingled: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, time);
 408                         time = 0;
 409                 }
 410                 else if (time >= 1800)
 411                 {
 412                         Con_Printf(CON_WARN "Host_Mingled: time stepped forward (went from %f to %f, difference %f)\n", oldtime, newtime, time);
 413                         time = 0;
 414                 }
 415                 host.realtime += time;
 416
 417                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 418                         Cvar_SetValueQuick(&host_framerate, 0);
 419
 420                 TaskQueue_Frame(false);
 421
 422                 // keep the random time dependent, but not when playing demos/benchmarking
 423                 if(!*sv_random_seed.string && !cls.demoplayback)
 424                         rand();
 425
 426                 NetConn_UpdateSockets();
 427
 428                 Log_DestBuffer_Flush();
 429
 430                 Curl_Run();
 431
 432                 // check for commands typed to the host
 433                 Host_GetConsoleCommands();
 434
 435                 // process console commands
 436 //              R_TimeReport("preconsole");
 437                 CL_VM_PreventInformationLeaks();
 438                 Cbuf_Frame(&cmd_client);
 439                 Cbuf_Frame(&cmd_server);
 440
 441                 if(sv.active)
 442                         Cbuf_Frame(&cmd_serverfromclient);
 443
 444 //              R_TimeReport("console");
 445
 446                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 447
 448                 R_TimeReport("---");
 449
 450         //-------------------
 451         //
 452         // server operations
 453         //
 454         //-------------------
 455
 456                 // limit the frametime steps to no more than 100ms each
 457                 if (sv_timer > 0.1)
 458                 {
 459                         if (!svs.threaded)
 460                                 svs.perf_acc_lost += (sv_timer - 0.1);
 461                         sv_timer = 0.1;
 462                 }
 463
 464                 if (!svs.threaded)
 465                 {
 466                         svs.perf_acc_sleeptime = host.sleeptime;
 467                         svs.perf_acc_realtime += time;
 468
 469                         // Look for clients who have spawned
 470                         playing = false;
 471                         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 472                                 if(host_client->begun)
 473                                         if(host_client->netconnection)
 474                                                 playing = true;
 475                         if(sv.time < 10)
 476                         {
 477                                 // don't accumulate time for the first 10 seconds of a match
 478                                 // so things can settle
 479                                 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;
 480                         }
 481                         else if(svs.perf_acc_realtime > 5)
 482                         {
 483                                 svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 484                                 svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 485                                 if(svs.perf_acc_offset_samples > 0)
 486                                 {
 487                                         svs.perf_offset_max = svs.perf_acc_offset_max;
 488                                         svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 489                                         svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 490                                 }
 491                                 if(svs.perf_lost > 0 && developer_extra.integer)
 492                                         if(playing) // only complain if anyone is looking
 493                                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport(vabuf, sizeof(vabuf)));
 494                                 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;
 495                         }
 496
 497                         if (sv.active && sv_timer > 0)
 498                         {
 499                                 // execute one or more server frames, with an upper limit on how much
 500                                 // execution time to spend on server frames to avoid freezing the game if
 501                                 // the server is overloaded, this execution time limit means the game will
 502                                 // slow down if the server is taking too long.
 503                                 int framecount, framelimit = 1;
 504                                 double advancetime, aborttime = 0;
 505                                 float offset;
 506                                 prvm_prog_t *prog = SVVM_prog;
 507                                 // receive packets on each main loop iteration, as the main loop may
 508                                 // be undersleeping due to select() detecting a new packet
 509                                 if (sv.active && !svs.threaded)
 510                                         NetConn_ServerFrame();
 511                                 // run the world state
 512                                 // don't allow simulation to run too fast or too slow or logic glitches can occur
 513
 514                                 // stop running server frames if the wall time reaches this value
 515                                 if (sys_ticrate.value <= 0)
 516                                         advancetime = sv_timer;
 517                                 else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 518                                 {
 519                                         // synchronize to the client frametime, but no less than 10ms and no more than 100ms
 520                                         advancetime = bound(0.01, cl_timer, 0.1);
 521                                 }
 522                                 else
 523                                 {
 524                                         advancetime = sys_ticrate.value;
 525                                         // listen servers can run multiple server frames per client frame
 526                                         framelimit = cl_maxphysicsframesperserverframe.integer;
 527                                         aborttime = Sys_DirtyTime() + 0.1;
 528                                 }
 529                                 if(host_timescale.value > 0 && host_timescale.value < 1)
 530                                         advancetime = min(advancetime, 0.1 / host_timescale.value);
 531                                 else
 532                                         advancetime = min(advancetime, 0.1);
 533
 534                                 if(advancetime > 0)
 535                                 {
 536                                         offset = Sys_DirtyTime() - newtime;if (offset < 0 || offset >= 1800) offset = 0;
 537                                         offset += sv_timer;
 538                                         ++svs.perf_acc_offset_samples;
 539                                         svs.perf_acc_offset += offset;
 540                                         svs.perf_acc_offset_squared += offset * offset;
 541                                         if(svs.perf_acc_offset_max < offset)
 542                                                 svs.perf_acc_offset_max = offset;
 543                                 }
 544
 545                                 // only advance time if not paused
 546                                 // the game also pauses in singleplayer when menu or console is used
 547                                 sv.frametime = advancetime * host_timescale.value;
 548                                 if (host_framerate.value)
 549                                         sv.frametime = host_framerate.value;
 550                                 if (sv.paused || host.paused)
 551                                         sv.frametime = 0;
 552
 553                                 for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 554                                 {
 555                                         sv_timer -= advancetime;
 556
 557                                         // move things around and think unless paused
 558                                         if (sv.frametime)
 559                                                 SV_Physics();
 560
 561                                         // if this server frame took too long, break out of the loop
 562                                         if (framelimit > 1 && Sys_DirtyTime() >= aborttime)
 563                                                 break;
 564                                 }
 565                                 R_TimeReport("serverphysics");
 566
 567                                 // send all messages to the clients
 568                                 SV_SendClientMessages();
 569
 570                                 if (sv.paused == 1 && host.realtime > sv.pausedstart && sv.pausedstart > 0) {
 571                                         prog->globals.fp[OFS_PARM0] = host.realtime - sv.pausedstart;
 572                                         PRVM_serverglobalfloat(time) = sv.time;
 573                                         prog->ExecuteProgram(prog, PRVM_serverfunction(SV_PausedTic), "QC function SV_PausedTic is missing");
 574                                 }
 575
 576                                 // send an heartbeat if enough time has passed since the last one
 577                                 NetConn_Heartbeat(0);
 578                                 R_TimeReport("servernetwork");
 579                         }
 580                         else
 581                         {
 582                                 // don't let r_speeds display jump around
 583                                 R_TimeReport("serverphysics");
 584                                 R_TimeReport("servernetwork");
 585                         }
 586                 }
 587                 // if there is some time remaining from this frame, reset the timer
 588                 if (sv_timer >= 0)
 589                 {
 590                         if (!svs.threaded)
 591                                 svs.perf_acc_lost += sv_timer;
 592                         sv_timer = 0;
 593                 }
 594
 595                 sv_timer += time;
 596
 597         //-------------------
 598         //
 599         // client operations
 600         //
 601         //-------------------
 602
 603                 cl_timer = CL_Frame(cl_timer);
 604                 cl_timer += time;
 605
 606 #if MEMPARANOIA
 607                 Mem_CheckSentinelsGlobal();
 608 #else
 609                 if (developer_memorydebug.integer)
 610                         Mem_CheckSentinelsGlobal();
 611 #endif
 612
 613                 // if the accumulators haven't become positive yet, wait a while
 614                 wait = max(cl_timer, sv_timer) * -1000000.0;
 615
 616                 if (!host.restless && wait >= 1)
 617                 {
 618                         double time0, delta;
 619
 620                         if(host_maxwait.value <= 0)
 621                                 wait = min(wait, 1000000.0);
 622                         else
 623                                 wait = min(wait, host_maxwait.value * 1000.0);
 624                         if(wait < 1)
 625                                 wait = 1; // because we cast to int
 626
 627                         time0 = Sys_DirtyTime();
 628                         if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer && !svs.threaded) {
 629                                 NetConn_SleepMicroseconds((int)wait);
 630                                 if (cls.state != ca_dedicated)
 631                                         NetConn_ClientFrame(); // helps server browser get good ping values
 632                                 // TODO can we do the same for ServerFrame? Probably not.
 633                         }
 634                         else
 635                                 Sys_Sleep((int)wait);
 636                         delta = Sys_DirtyTime() - time0;
 637                         if (delta < 0 || delta >= 1800)
 638                                 delta = 0;
 639                         host.sleeptime += delta;
 640 //                      R_TimeReport("sleep");
 641                 }
 642
 643                 host.framecount++;
 644                 oldtime = newtime;
 645         }
 646
 647         Sys_Quit(0);
 648 }
 649
 650 //============================================================================
 651
 652 qboolean vid_opened = false;
 653 void Host_StartVideo(void)
 654 {
 655         if (!vid_opened && cls.state != ca_dedicated)
 656         {
 657                 vid_opened = true;
 658                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
 659                 NetConn_UpdateSockets();
 660                 VID_Start();
 661                 CDAudio_Startup();
 662         }
 663 }
 664
 665 char engineversion[128];
 666
 667 qboolean sys_nostdout = false;
 668
 669 static qfile_t *locksession_fh = NULL;
 670 static qboolean locksession_run = false;
 671 static void Host_InitSession(void)
 672 {
 673         int i;
 674         char *buf;
 675         Cvar_RegisterVariable(&sessionid);
 676         Cvar_RegisterVariable(&locksession);
 677
 678         // load the session ID into the read-only cvar
 679         if ((i = COM_CheckParm("-sessionid")) && (i + 1 < sys.argc))
 680         {
 681                 if(sys.argv[i+1][0] == '.')
 682                         Cvar_SetQuick(&sessionid, sys.argv[i+1]);
 683                 else
 684                 {
 685                         buf = (char *)Z_Malloc(strlen(sys.argv[i+1]) + 2);
 686                         dpsnprintf(buf, sizeof(buf), ".%s", sys.argv[i+1]);
 687                         Cvar_SetQuick(&sessionid, buf);
 688                 }
 689         }
 690 }
 691 void Host_LockSession(void)
 692 {
 693         if(locksession_run)
 694                 return;
 695         locksession_run = true;
 696         if(locksession.integer != 0 && !COM_CheckParm("-readonly"))
 697         {
 698                 char vabuf[1024];
 699                 char *p = va(vabuf, sizeof(vabuf), "%slock%s", *fs_userdir ? fs_userdir : fs_basedir, sessionid.string);
 700                 FS_CreatePath(p);
 701                 locksession_fh = FS_SysOpen(p, "wl", false);
 702                 // TODO maybe write the pid into the lockfile, while we are at it? may help server management tools
 703                 if(!locksession_fh)
 704                 {
 705                         if(locksession.integer == 2)
 706                         {
 707                                 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);
 708                         }
 709                         else
 710                         {
 711                                 Sys_Error("session lock %s could not be acquired. Please run with -sessionid and an unique session name.\n", p);
 712                         }
 713                 }
 714         }
 715 }
 716 void Host_UnlockSession(void)
 717 {
 718         if(!locksession_run)
 719                 return;
 720         locksession_run = false;
 721
 722         if(locksession_fh)
 723         {
 724                 FS_Close(locksession_fh);
 725                 // NOTE: we can NOT unlink the lock here, as doing so would
 726                 // create a race condition if another process created it
 727                 // between our close and our unlink
 728                 locksession_fh = NULL;
 729         }
 730 }
 731
 732 /*
 733 ====================
 734 Host_Init
 735 ====================
 736 */
 737 static void Host_Init (void)
 738 {
 739         int i;
 740         const char* os;
 741         char vabuf[1024];
 742         cmd_state_t *cmd = &cmd_client;
 743
 744         host.state = host_init;
 745
 746         if (COM_CheckParm("-profilegameonly"))
 747                 Sys_AllowProfiling(false);
 748
 749         // LadyHavoc: quake never seeded the random number generator before... heh
 750         if (COM_CheckParm("-benchmark"))
 751                 srand(0); // predictable random sequence for -benchmark
 752         else
 753                 srand((unsigned int)time(NULL));
 754
 755         // FIXME: this is evil, but possibly temporary
 756         // LadyHavoc: doesn't seem very temporary...
 757         // LadyHavoc: made this a saved cvar
 758 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 759         if (COM_CheckParm("-developer"))
 760         {
 761                 developer.value = developer.integer = 1;
 762                 developer.string = "1";
 763         }
 764
 765         if (COM_CheckParm("-developer2") || COM_CheckParm("-developer3"))
 766         {
 767                 developer.value = developer.integer = 1;
 768                 developer.string = "1";
 769                 developer_extra.value = developer_extra.integer = 1;
 770                 developer_extra.string = "1";
 771                 developer_insane.value = developer_insane.integer = 1;
 772                 developer_insane.string = "1";
 773                 developer_memory.value = developer_memory.integer = 1;
 774                 developer_memory.string = "1";
 775                 developer_memorydebug.value = developer_memorydebug.integer = 1;
 776                 developer_memorydebug.string = "1";
 777         }
 778
 779         if (COM_CheckParm("-developer3"))
 780         {
 781                 gl_paranoid.integer = 1;gl_paranoid.string = "1";
 782                 gl_printcheckerror.integer = 1;gl_printcheckerror.string = "1";
 783         }
 784
 785 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 786         if (COM_CheckParm("-nostdout"))
 787                 sys_nostdout = 1;
 788
 789         // used by everything
 790         Memory_Init();
 791
 792         // initialize console command/cvar/alias/command execution systems
 793         Cmd_Init();
 794
 795         // initialize memory subsystem cvars/commands
 796         Memory_Init_Commands();
 797
 798         // initialize console and logging and its cvars/commands
 799         Con_Init();
 800
 801         // initialize various cvars that could not be initialized earlier
 802         u8_Init();
 803         Curl_Init_Commands();
 804         Sys_Init_Commands();
 805         COM_Init_Commands();
 806
 807         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
 808         FS_Init();
 809
 810         // construct a version string for the corner of the console
 811         os = DP_OS_NAME;
 812         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
 813         Con_Printf("%s\n", engineversion);
 814
 815         // initialize process nice level
 816         Sys_InitProcessNice();
 817
 818         // initialize ixtable
 819         Mathlib_Init();
 820
 821         // register the cvars for session locking
 822         Host_InitSession();
 823
 824         // must be after FS_Init
 825         Crypto_Init();
 826         Crypto_Init_Commands();
 827
 828         NetConn_Init();
 829         Curl_Init();
 830         PRVM_Init();
 831         Mod_Init();
 832         World_Init();
 833         SV_Init();
 834         V_Init(); // some cvars needed by server player physics (cl_rollangle etc)
 835         Host_InitLocal();
 836         Host_ServerOptions();
 837
 838         Thread_Init();
 839         TaskQueue_Init();
 840
 841         CL_Init();
 842
 843         // save off current state of aliases, commands and cvars for later restore if FS_GameDir_f is called
 844         // NOTE: menu commands are freed by Cmd_RestoreInitState
 845         Cmd_SaveInitState();
 846
 847         // FIXME: put this into some neat design, but the menu should be allowed to crash
 848         // without crashing the whole game, so this should just be a short-time solution
 849
 850         // here comes the not so critical stuff
 851         if (setjmp(host.abortframe)) {
 852                 return;
 853         }
 854
 855         Host_AddConfigText(cmd);
 856
 857         Host_StartVideo();
 858
 859         // if quake.rc is missing, use default
 860         if (!FS_FileExists("quake.rc"))
 861         {
 862                 Cbuf_InsertText(cmd, "exec default.cfg\nexec " CONFIGFILENAME "\nexec autoexec.cfg\n");
 863                 Cbuf_Execute(cmd);
 864         }
 865
 866         host.state = host_active;
 867
 868         // run stuffcmds now, deferred previously because it can crash if a server starts that early
 869         Cbuf_AddText(cmd,"stuffcmds\n");
 870         Cbuf_Execute(cmd);
 871
 872         Log_Start();
 873
 874         // put up the loading image so the user doesn't stare at a black screen...
 875         SCR_BeginLoadingPlaque(true);
 876
 877         // check for special benchmark mode
 878 // 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)
 879         i = COM_CheckParm("-benchmark");
 880         if (i && i + 1 < sys.argc)
 881         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
 882         {
 883                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "timedemo %s\n", sys.argv[i + 1]));
 884                 Cbuf_Execute(&cmd_client);
 885         }
 886
 887         // check for special demo mode
 888 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
 889         i = COM_CheckParm("-demo");
 890         if (i && i + 1 < sys.argc)
 891         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
 892         {
 893                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "playdemo %s\n", sys.argv[i + 1]));
 894                 Cbuf_Execute(&cmd_client);
 895         }
 896
 897 #ifdef CONFIG_VIDEO_CAPTURE
 898 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
 899         i = COM_CheckParm("-capturedemo");
 900         if (i && i + 1 < sys.argc)
 901         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
 902         {
 903                 Cbuf_AddText(&cmd_client, va(vabuf, sizeof(vabuf), "playdemo %s\ncl_capturevideo 1\n", sys.argv[i + 1]));
 904                 Cbuf_Execute(&cmd_client);
 905         }
 906 #endif
 907
 908         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
 909         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
 910         {
 911                 Cbuf_AddText(&cmd_client, "startmap_dm\n");
 912                 Cbuf_Execute(&cmd_client);
 913         }
 914
 915         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
 916         {
 917 #ifdef CONFIG_MENU
 918                 Cbuf_AddText(&cmd_client, "togglemenu 1\n");
 919 #endif
 920                 Cbuf_Execute(&cmd_client);
 921         }
 922
 923         Con_DPrint("========Initialized=========\n");
 924
 925         if (cls.state != ca_dedicated)
 926                 SV_StartThread();
 927 }
 928
 929
 930 /*
 931 ===============
 932 Host_Shutdown
 933
 934 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
 935 to run quit through here before the final handoff to the sys code.
 936 ===============
 937 */
 938 void Host_Shutdown(void)
 939 {
 940         static qboolean isdown = false;
 941
 942         if (isdown)
 943         {
 944                 Con_Print("recursive shutdown\n");
 945                 return;
 946         }
 947         if (setjmp(host.abortframe))
 948         {
 949                 Con_Print("aborted the quitting frame?!?\n");
 950                 return;
 951         }
 952         isdown = true;
 953
 954         if(cls.state != ca_dedicated)
 955                 CL_Shutdown();
 956
 957         // end the server thread
 958         if (svs.threaded)
 959                 SV_StopThread();
 960
 961         // shut down local server if active
 962         SV_LockThreadMutex();
 963         SV_Shutdown ();
 964         SV_UnlockThreadMutex();
 965
 966         // AK shutdown PRVM
 967         // AK hmm, no PRVM_Shutdown(); yet
 968
 969         Host_SaveConfig();
 970
 971         Curl_Shutdown ();
 972         NetConn_Shutdown ();
 973
 974         SV_StopThread();
 975         TaskQueue_Shutdown();
 976         Thread_Shutdown();
 977         Cmd_Shutdown();
 978         Sys_Shutdown();
 979         Log_Close();
 980         Crypto_Shutdown();
 981
 982         Host_UnlockSession();
 983
 984         Con_Shutdown();
 985         Memory_Shutdown();
 986 }
 987
 988 void Host_NoOperation_f(cmd_state_t *cmd)
 989 {
 990 }