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factor out thread interface from dpsoftrast
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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_gecko.h"
28 #include "cl_video.h"
29 #include "progsvm.h"
30 #include "csprogs.h"
31 #include "sv_demo.h"
32 #include "snd_main.h"
33 #include "thread.h"
34
35 /*
36
37 A server can always be started, even if the system started out as a client
38 to a remote system.
39
40 A client can NOT be started if the system started as a dedicated server.
41
42 Memory is cleared / released when a server or client begins, not when they end.
43
44 */
45
46 // how many frames have occurred
47 // (checked by Host_Error and Host_SaveConfig_f)
48 int host_framecount = 0;
49 // LordHavoc: set when quit is executed
50 qboolean host_shuttingdown = false;
51
52 // the real time since application started, without any slowmo or clamping
53 double realtime;
54
55 // current client
56 client_t *host_client;
57
58 jmp_buf host_abortframe;
59 double host_starttime = 0;
60
61 // pretend frames take this amount of time (in seconds), 0 = realtime
62 cvar_t host_framerate = {0, "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"};
63 // shows time used by certain subsystems
64 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
65 cvar_t host_maxwait = {0, "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."};
66 cvar_t cl_minfps = {CVAR_SAVE, "cl_minfps", "40", "minimum fps target - while the rendering performance is below this, it will drift toward lower quality"};
67 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
68 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
69 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
70 cvar_t cl_minfps_qualitypower = {CVAR_SAVE, "cl_minfps_qualitypower", "4", "raises quality value to a power of itself, higher values make quality drop more sharply in relation to framerate"};
71 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
72 cvar_t cl_maxfps = {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)"};
73 cvar_t cl_maxfps_alwayssleep = {0, "cl_maxfps_alwayssleep","1", "gives up some processing time to other applications each frame, value in milliseconds, disabled if cl_maxfps is 0"};
74 cvar_t cl_maxidlefps = {CVAR_SAVE, "cl_maxidlefps", "20", "maximum fps cap when the game is not the active window (makes cpu time available to other programs"};
75
76 cvar_t developer = {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"};
77 cvar_t developer_extra = {0, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};
78 cvar_t developer_insane = {0, "developer_insane", "0", "prints huge streams of information about internal workings, entire contents of files being read/written, etc.  Not recommended!"};
79 cvar_t developer_loadfile = {0, "developer_loadfile","0", "prints name and size of every file loaded via the FS_LoadFile function (which is almost everything)"};
80 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
81 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
82
83 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
84 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
85
86 /*
87 ================
88 Host_AbortCurrentFrame
89
90 aborts the current host frame and goes on with the next one
91 ================
92 */
93 void Host_AbortCurrentFrame(void)
94 {
95         longjmp (host_abortframe, 1);
96 }
97
98 /*
99 ================
100 Host_Error
101
102 This shuts down both the client and server
103 ================
104 */
105 void Host_Error (const char *error, ...)
106 {
107         static char hosterrorstring1[MAX_INPUTLINE];
108         static char hosterrorstring2[MAX_INPUTLINE];
109         static qboolean hosterror = false;
110         va_list argptr;
111
112         // turn off rcon redirect if it was active when the crash occurred
113         // to prevent loops when it is a networking problem
114         Con_Rcon_Redirect_Abort();
115
116         va_start (argptr,error);
117         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
118         va_end (argptr);
119
120         Con_Printf("Host_Error: %s\n", hosterrorstring1);
121
122         // LordHavoc: if crashing very early, or currently shutting down, do
123         // Sys_Error instead
124         if (host_framecount < 3 || host_shuttingdown)
125                 Sys_Error ("Host_Error: %s", hosterrorstring1);
126
127         if (hosterror)
128                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
129         hosterror = true;
130
131         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
132
133         CL_Parse_DumpPacket();
134
135         CL_Parse_ErrorCleanUp();
136
137         //PR_Crash();
138
139         // print out where the crash happened, if it was caused by QC (and do a cleanup)
140         PRVM_Crash();
141
142
143         Host_ShutdownServer ();
144
145         if (cls.state == ca_dedicated)
146                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
147
148         CL_Disconnect ();
149         cls.demonum = -1;
150
151         hosterror = false;
152
153         Host_AbortCurrentFrame();
154 }
155
156 void Host_ServerOptions (void)
157 {
158         int i;
159
160         // general default
161         svs.maxclients = 8;
162
163 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
164 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
165         // if no client is in the executable or -dedicated is specified on
166         // commandline, start a dedicated server
167         i = COM_CheckParm ("-dedicated");
168         if (i || !cl_available)
169         {
170                 cls.state = ca_dedicated;
171                 // check for -dedicated specifying how many players
172                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
173                         svs.maxclients = atoi (com_argv[i+1]);
174                 if (COM_CheckParm ("-listen"))
175                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
176                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
177                 Cvar_SetValue("sv_public", 1);
178         }
179         else if (cl_available)
180         {
181                 // client exists and not dedicated, check if -listen is specified
182                 cls.state = ca_disconnected;
183                 i = COM_CheckParm ("-listen");
184                 if (i)
185                 {
186                         // default players unless specified
187                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
188                                 svs.maxclients = atoi (com_argv[i+1]);
189                 }
190                 else
191                 {
192                         // default players in some games, singleplayer in most
193                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_XONOTIC && gamemode != GAME_BATTLEMECH)
194                                 svs.maxclients = 1;
195                 }
196         }
197
198         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
199
200         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
201
202         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
203                 Cvar_SetValueQuick(&deathmatch, 1);
204 }
205
206 /*
207 =======================
208 Host_InitLocal
209 ======================
210 */
211 void Host_SaveConfig_f(void);
212 void Host_LoadConfig_f(void);
213 extern cvar_t sv_writepicture_quality;
214 extern cvar_t r_texture_jpeg_fastpicmip;
215 static void Host_InitLocal (void)
216 {
217         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
218         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
219
220         Cvar_RegisterVariable (&host_framerate);
221         Cvar_RegisterVariable (&host_speeds);
222         Cvar_RegisterVariable (&host_maxwait);
223         Cvar_RegisterVariable (&cl_minfps);
224         Cvar_RegisterVariable (&cl_minfps_fade);
225         Cvar_RegisterVariable (&cl_minfps_qualitymax);
226         Cvar_RegisterVariable (&cl_minfps_qualitymin);
227         Cvar_RegisterVariable (&cl_minfps_qualitypower);
228         Cvar_RegisterVariable (&cl_minfps_qualityscale);
229         Cvar_RegisterVariable (&cl_maxfps);
230         Cvar_RegisterVariable (&cl_maxfps_alwayssleep);
231         Cvar_RegisterVariable (&cl_maxidlefps);
232
233         Cvar_RegisterVariable (&developer);
234         Cvar_RegisterVariable (&developer_extra);
235         Cvar_RegisterVariable (&developer_insane);
236         Cvar_RegisterVariable (&developer_loadfile);
237         Cvar_RegisterVariable (&developer_loading);
238         Cvar_RegisterVariable (&developer_entityparsing);
239
240         Cvar_RegisterVariable (&timestamps);
241         Cvar_RegisterVariable (&timeformat);
242
243         Cvar_RegisterVariable (&sv_writepicture_quality);
244         Cvar_RegisterVariable (&r_texture_jpeg_fastpicmip);
245 }
246
247
248 /*
249 ===============
250 Host_SaveConfig_f
251
252 Writes key bindings and archived cvars to config.cfg
253 ===============
254 */
255 void Host_SaveConfig_to(const char *file)
256 {
257         qfile_t *f;
258
259 // dedicated servers initialize the host but don't parse and set the
260 // config.cfg cvars
261         // LordHavoc: don't save a config if it crashed in startup
262         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
263         {
264                 f = FS_OpenRealFile(file, "wb", false);
265                 if (!f)
266                 {
267                         Con_Printf("Couldn't write %s.\n", file);
268                         return;
269                 }
270
271                 Key_WriteBindings (f);
272                 Cvar_WriteVariables (f);
273
274                 FS_Close (f);
275         }
276 }
277 void Host_SaveConfig(void)
278 {
279         Host_SaveConfig_to(CONFIGFILENAME);
280 }
281 void Host_SaveConfig_f(void)
282 {
283         const char *file = CONFIGFILENAME;
284
285         if(Cmd_Argc() >= 2) {
286                 file = Cmd_Argv(1);
287                 Con_Printf("Saving to %s\n", file);
288         }
289
290         Host_SaveConfig_to(file);
291 }
292
293 /*
294 ===============
295 Host_LoadConfig_f
296
297 Resets key bindings and cvars to defaults and then reloads scripts
298 ===============
299 */
300 void Host_LoadConfig_f(void)
301 {
302         // unlock the cvar default strings so they can be updated by the new default.cfg
303         Cvar_UnlockDefaults();
304         // reset cvars to their defaults, and then exec startup scripts again
305         Cbuf_InsertText("cvar_resettodefaults_all;exec " STARTCONFIGFILENAME "\n");
306 }
307
308 /*
309 =================
310 SV_ClientPrint
311
312 Sends text across to be displayed
313 FIXME: make this just a stuffed echo?
314 =================
315 */
316 void SV_ClientPrint(const char *msg)
317 {
318         if (host_client->netconnection)
319         {
320                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
321                 MSG_WriteString(&host_client->netconnection->message, msg);
322         }
323 }
324
325 /*
326 =================
327 SV_ClientPrintf
328
329 Sends text across to be displayed
330 FIXME: make this just a stuffed echo?
331 =================
332 */
333 void SV_ClientPrintf(const char *fmt, ...)
334 {
335         va_list argptr;
336         char msg[MAX_INPUTLINE];
337
338         va_start(argptr,fmt);
339         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
340         va_end(argptr);
341
342         SV_ClientPrint(msg);
343 }
344
345 /*
346 =================
347 SV_BroadcastPrint
348
349 Sends text to all active clients
350 =================
351 */
352 void SV_BroadcastPrint(const char *msg)
353 {
354         int i;
355         client_t *client;
356
357         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
358         {
359                 if (client->active && client->netconnection)
360                 {
361                         MSG_WriteByte(&client->netconnection->message, svc_print);
362                         MSG_WriteString(&client->netconnection->message, msg);
363                 }
364         }
365
366         if (sv_echobprint.integer && cls.state == ca_dedicated)
367                 Con_Print(msg);
368 }
369
370 /*
371 =================
372 SV_BroadcastPrintf
373
374 Sends text to all active clients
375 =================
376 */
377 void SV_BroadcastPrintf(const char *fmt, ...)
378 {
379         va_list argptr;
380         char msg[MAX_INPUTLINE];
381
382         va_start(argptr,fmt);
383         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
384         va_end(argptr);
385
386         SV_BroadcastPrint(msg);
387 }
388
389 /*
390 =================
391 Host_ClientCommands
392
393 Send text over to the client to be executed
394 =================
395 */
396 void Host_ClientCommands(const char *fmt, ...)
397 {
398         va_list argptr;
399         char string[MAX_INPUTLINE];
400
401         if (!host_client->netconnection)
402                 return;
403
404         va_start(argptr,fmt);
405         dpvsnprintf(string, sizeof(string), fmt, argptr);
406         va_end(argptr);
407
408         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
409         MSG_WriteString(&host_client->netconnection->message, string);
410 }
411
412 /*
413 =====================
414 SV_DropClient
415
416 Called when the player is getting totally kicked off the host
417 if (crash = true), don't bother sending signofs
418 =====================
419 */
420 void SV_DropClient(qboolean crash)
421 {
422         int i;
423         Con_Printf("Client \"%s\" dropped\n", host_client->name);
424
425         SV_StopDemoRecording(host_client);
426
427         // make sure edict is not corrupt (from a level change for example)
428         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
429
430         if (host_client->netconnection)
431         {
432                 // free the client (the body stays around)
433                 if (!crash)
434                 {
435                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
436                         unsigned char bufdata[8];
437                         sizebuf_t buf;
438                         memset(&buf, 0, sizeof(buf));
439                         buf.data = bufdata;
440                         buf.maxsize = sizeof(bufdata);
441                         MSG_WriteByte(&buf, svc_disconnect);
442                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
443                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
444                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
445                 }
446                 // break the net connection
447                 NetConn_Close(host_client->netconnection);
448                 host_client->netconnection = NULL;
449         }
450
451         // call qc ClientDisconnect function
452         // LordHavoc: don't call QC if server is dead (avoids recursive
453         // Host_Error in some mods when they run out of edicts)
454         if (host_client->clientconnectcalled && sv.active && host_client->edict)
455         {
456                 // call the prog function for removing a client
457                 // this will set the body to a dead frame, among other things
458                 int saveSelf = prog->globals.server->self;
459                 host_client->clientconnectcalled = false;
460                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
461                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
462                 prog->globals.server->self = saveSelf;
463         }
464
465         // if a download is active, close it
466         if (host_client->download_file)
467         {
468                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
469                 FS_Close(host_client->download_file);
470                 host_client->download_file = NULL;
471                 host_client->download_name[0] = 0;
472                 host_client->download_expectedposition = 0;
473                 host_client->download_started = false;
474         }
475
476         // remove leaving player from scoreboard
477         host_client->name[0] = 0;
478         host_client->colors = 0;
479         host_client->frags = 0;
480         // send notification to all clients
481         // get number of client manually just to make sure we get it right...
482         i = host_client - svs.clients;
483         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
484         MSG_WriteByte (&sv.reliable_datagram, i);
485         MSG_WriteString (&sv.reliable_datagram, host_client->name);
486         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
487         MSG_WriteByte (&sv.reliable_datagram, i);
488         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
489         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
490         MSG_WriteByte (&sv.reliable_datagram, i);
491         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
492
493         // free the client now
494         if (host_client->entitydatabase)
495                 EntityFrame_FreeDatabase(host_client->entitydatabase);
496         if (host_client->entitydatabase4)
497                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
498         if (host_client->entitydatabase5)
499                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
500
501         if (sv.active)
502         {
503                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
504                 PRVM_ED_ClearEdict(host_client->edict);
505         }
506
507         // clear the client struct (this sets active to false)
508         memset(host_client, 0, sizeof(*host_client));
509
510         // update server listing on the master because player count changed
511         // (which the master uses for filtering empty/full servers)
512         NetConn_Heartbeat(1);
513
514         if (sv.loadgame)
515         {
516                 for (i = 0;i < svs.maxclients;i++)
517                         if (svs.clients[i].active && !svs.clients[i].spawned)
518                                 break;
519                 if (i == svs.maxclients)
520                 {
521                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
522                         sv.paused = sv.loadgame = false; // we're basically done with loading now
523                 }
524         }
525 }
526
527 /*
528 ==================
529 Host_ShutdownServer
530
531 This only happens at the end of a game, not between levels
532 ==================
533 */
534 void Host_ShutdownServer(void)
535 {
536         int i;
537
538         Con_DPrintf("Host_ShutdownServer\n");
539
540         if (!sv.active)
541                 return;
542
543         NetConn_Heartbeat(2);
544         NetConn_Heartbeat(2);
545
546 // make sure all the clients know we're disconnecting
547         SV_VM_Begin();
548         World_End(&sv.world);
549         if(prog->loaded)
550                 if(prog->funcoffsets.SV_Shutdown)
551                 {
552                         func_t s = prog->funcoffsets.SV_Shutdown;
553                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
554                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
555                 }
556         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
557                 if (host_client->active)
558                         SV_DropClient(false); // server shutdown
559         SV_VM_End();
560
561         NetConn_CloseServerPorts();
562
563         sv.active = false;
564 //
565 // clear structures
566 //
567         memset(&sv, 0, sizeof(sv));
568         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
569 }
570
571
572 //============================================================================
573
574 /*
575 ===================
576 Host_GetConsoleCommands
577
578 Add them exactly as if they had been typed at the console
579 ===================
580 */
581 void Host_GetConsoleCommands (void)
582 {
583         char *cmd;
584
585         while (1)
586         {
587                 cmd = Sys_ConsoleInput ();
588                 if (!cmd)
589                         break;
590                 Cbuf_AddText (cmd);
591         }
592 }
593
594 /*
595 ==================
596 Host_TimeReport
597
598 Returns a time report string, for example for
599 ==================
600 */
601 const char *Host_TimingReport(void)
602 {
603         return va("%.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);
604 }
605
606 /*
607 ==================
608 Host_Frame
609
610 Runs all active servers
611 ==================
612 */
613 static void Host_Init(void);
614 void Host_Main(void)
615 {
616         double time1 = 0;
617         double time2 = 0;
618         double time3 = 0;
619         double cl_timer, sv_timer;
620         double clframetime, deltarealtime, oldrealtime;
621         double wait;
622         int pass1, pass2, pass3, i;
623
624         Host_Init();
625
626         cl_timer = 0;
627         sv_timer = 0;
628
629         realtime = host_starttime = Sys_DoubleTime();
630         for (;;)
631         {
632                 if (setjmp(host_abortframe))
633                 {
634                         SCR_ClearLoadingScreen(false);
635                         continue;                       // something bad happened, or the server disconnected
636                 }
637
638                 oldrealtime = realtime;
639                 realtime = Sys_DoubleTime();
640
641                 deltarealtime = realtime - oldrealtime;
642                 cl_timer += deltarealtime;
643                 sv_timer += deltarealtime;
644
645                 svs.perf_acc_realtime += deltarealtime;
646
647                 // Look for clients who have spawned
648                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
649                         if(host_client->spawned)
650                                 if(host_client->netconnection)
651                                         break;
652                 if(i == svs.maxclients)
653                 {
654                         // Nobody is looking? Then we won't do timing...
655                         // Instead, reset it to zero
656                         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 = 0;
657                 }
658                 else if(svs.perf_acc_realtime > 5)
659                 {
660                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
661                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
662                         if(svs.perf_acc_offset_samples > 0)
663                         {
664                                 svs.perf_offset_max = svs.perf_acc_offset_max;
665                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
666                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
667                         }
668                         if(svs.perf_lost > 0 && developer_extra.integer)
669                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
670                         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 = 0;
671                 }
672
673                 if (slowmo.value < 0.00001 && slowmo.value != 0)
674                         Cvar_SetValue("slowmo", 0);
675                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
676                         Cvar_SetValue("host_framerate", 0);
677
678                 // keep the random time dependent, but not when playing demos/benchmarking
679                 if(!*sv_random_seed.string && !cls.demoplayback)
680                         rand();
681
682                 cl.islocalgame = NetConn_IsLocalGame();
683
684                 // get new key events
685                 Key_EventQueue_Unblock();
686                 SndSys_SendKeyEvents();
687                 Sys_SendKeyEvents();
688
689                 NetConn_UpdateSockets();
690
691                 Log_DestBuffer_Flush();
692
693                 // receive packets on each main loop iteration, as the main loop may
694                 // be undersleeping due to select() detecting a new packet
695                 if (sv.active)
696                         NetConn_ServerFrame();
697
698                 Curl_Run();
699
700                 // check for commands typed to the host
701                 Host_GetConsoleCommands();
702
703                 // when a server is running we only execute console commands on server frames
704                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
705                 // otherwise we execute them on client frames
706                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
707                 {
708                         // process console commands
709 //                      R_TimeReport("preconsole");
710                         CL_VM_PreventInformationLeaks();
711                         Cbuf_Execute();
712 //                      R_TimeReport("console");
713                 }
714
715                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
716
717                 // if the accumulators haven't become positive yet, wait a while
718                 if (cls.state == ca_dedicated)
719                         wait = sv_timer * -1000000.0;
720                 else if (!sv.active)
721                         wait = cl_timer * -1000000.0;
722                 else
723                         wait = max(cl_timer, sv_timer) * -1000000.0;
724
725                 if (!cls.timedemo && wait >= 1)
726                 {
727                         double time0;
728
729                         if(host_maxwait.value <= 0)
730                                 wait = min(wait, 1000000.0);
731                         else
732                                 wait = min(wait, host_maxwait.value * 1000.0);
733                         if(wait < 1)
734                                 wait = 1; // because we cast to int
735
736                         time0 = Sys_DoubleTime();
737                         if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer)
738                                 NetConn_SleepMicroseconds((int)wait);
739                         else
740                                 Sys_Sleep((int)wait);
741                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
742 //                      R_TimeReport("sleep");
743                         continue;
744                 }
745
746                 R_TimeReport("---");
747
748         //-------------------
749         //
750         // server operations
751         //
752         //-------------------
753
754                 // limit the frametime steps to no more than 100ms each
755                 if (cl_timer > 0.1)
756                         cl_timer = 0.1;
757                 if (sv_timer > 0.1)
758                 {
759                         svs.perf_acc_lost += (sv_timer - 0.1);
760                         sv_timer = 0.1;
761                 }
762
763                 if (sv.active && sv_timer > 0)
764                 {
765                         // execute one or more server frames, with an upper limit on how much
766                         // execution time to spend on server frames to avoid freezing the game if
767                         // the server is overloaded, this execution time limit means the game will
768                         // slow down if the server is taking too long.
769                         int framecount, framelimit = 1;
770                         double advancetime, aborttime = 0;
771                         float offset;
772
773                         // run the world state
774                         // don't allow simulation to run too fast or too slow or logic glitches can occur
775
776                         // stop running server frames if the wall time reaches this value
777                         if (sys_ticrate.value <= 0)
778                                 advancetime = sv_timer;
779                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
780                         {
781                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
782                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
783                                 framelimit = 10;
784                                 aborttime = realtime + 0.1;
785                         }
786                         else
787                         {
788                                 advancetime = sys_ticrate.value;
789                                 // listen servers can run multiple server frames per client frame
790                                 if (cls.state == ca_connected)
791                                 {
792                                         framelimit = 10;
793                                         aborttime = realtime + 0.1;
794                                 }
795                         }
796                         if(slowmo.value > 0 && slowmo.value < 1)
797                                 advancetime = min(advancetime, 0.1 / slowmo.value);
798                         else
799                                 advancetime = min(advancetime, 0.1);
800
801                         if(advancetime > 0)
802                         {
803                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
804                                 ++svs.perf_acc_offset_samples;
805                                 svs.perf_acc_offset += offset;
806                                 svs.perf_acc_offset_squared += offset * offset;
807                                 if(svs.perf_acc_offset_max < offset)
808                                         svs.perf_acc_offset_max = offset;
809                         }
810
811                         // only advance time if not paused
812                         // the game also pauses in singleplayer when menu or console is used
813                         sv.frametime = advancetime * slowmo.value;
814                         if (host_framerate.value)
815                                 sv.frametime = host_framerate.value;
816                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))
817                                 sv.frametime = 0;
818
819                         // setup the VM frame
820                         SV_VM_Begin();
821
822                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
823                         {
824                                 sv_timer -= advancetime;
825
826                                 // move things around and think unless paused
827                                 if (sv.frametime)
828                                         SV_Physics();
829
830                                 // if this server frame took too long, break out of the loop
831                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
832                                         break;
833                         }
834                         R_TimeReport("serverphysics");
835
836                         // send all messages to the clients
837                         SV_SendClientMessages();
838                         
839                         if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {
840                                 prog->globals.generic[OFS_PARM0] = realtime - sv.pausedstart;
841                                 PRVM_ExecuteProgram(prog->funcoffsets.SV_PausedTic, "QC function SV_PausedTic is missing");
842                         }
843
844                         // end the server VM frame
845                         SV_VM_End();
846
847                         // send an heartbeat if enough time has passed since the last one
848                         NetConn_Heartbeat(0);
849                         R_TimeReport("servernetwork");
850                 }
851                 else
852                 {
853                         // don't let r_speeds display jump around
854                         R_TimeReport("serverphysics");
855                         R_TimeReport("servernetwork");
856                 }
857
858         //-------------------
859         //
860         // client operations
861         //
862         //-------------------
863
864                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))
865                 {
866                         R_TimeReport("---");
867                         // decide the simulation time
868                         if (cls.capturevideo.active)
869                         {
870                                 //***
871                                 if (cls.capturevideo.realtime)
872                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
873                                 else
874                                 {
875                                         clframetime = 1.0 / cls.capturevideo.framerate;
876                                         cl.realframetime = max(cl_timer, clframetime);
877                                 }
878                         }
879                         else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
880                         {
881                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
882                                 // when running slow, we need to sleep to keep input responsive
883                                 wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);
884                                 if (wait > 0)
885                                         Sys_Sleep((int)wait);
886                         }
887                         else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)
888                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
889                         else
890                                 clframetime = cl.realframetime = cl_timer;
891
892                         // apply slowmo scaling
893                         clframetime *= cl.movevars_timescale;
894                         // scale playback speed of demos by slowmo cvar
895                         if (cls.demoplayback)
896                         {
897                                 clframetime *= slowmo.value;
898                                 // if demo playback is paused, don't advance time at all
899                                 if (cls.demopaused)
900                                         clframetime = 0;
901                         }
902
903                         // host_framerate overrides all else
904                         if (host_framerate.value)
905                                 clframetime = host_framerate.value;
906
907                         if (cl.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))
908                                 clframetime = 0;
909
910                         if (cls.timedemo)
911                                 clframetime = cl.realframetime = cl_timer;
912
913                         // deduct the frame time from the accumulator
914                         cl_timer -= cl.realframetime;
915
916                         cl.oldtime = cl.time;
917                         cl.time += clframetime;
918
919                         // update video
920                         if (host_speeds.integer)
921                                 time1 = Sys_DoubleTime();
922                         R_TimeReport("pre-input");
923
924                         // Collect input into cmd
925                         CL_Input();
926
927                         R_TimeReport("input");
928
929                         // check for new packets
930                         NetConn_ClientFrame();
931
932                         // read a new frame from a demo if needed
933                         CL_ReadDemoMessage();
934                         R_TimeReport("clientnetwork");
935
936                         // now that packets have been read, send input to server
937                         CL_SendMove();
938                         R_TimeReport("sendmove");
939
940                         // update client world (interpolate entities, create trails, etc)
941                         CL_UpdateWorld();
942                         R_TimeReport("lerpworld");
943
944                         CL_Video_Frame();
945                         CL_Gecko_Frame();
946
947                         R_TimeReport("client");
948
949                         CL_UpdateScreen();
950                         R_TimeReport("render");
951
952                         if (host_speeds.integer)
953                                 time2 = Sys_DoubleTime();
954
955                         // update audio
956                         if(cl.csqc_usecsqclistener)
957                         {
958                                 S_Update(&cl.csqc_listenermatrix);
959                                 cl.csqc_usecsqclistener = false;
960                         }
961                         else
962                                 S_Update(&r_refdef.view.matrix);
963
964                         CDAudio_Update();
965                         R_TimeReport("audio");
966
967                         // reset gathering of mouse input
968                         in_mouse_x = in_mouse_y = 0;
969
970                         if (host_speeds.integer)
971                         {
972                                 pass1 = (int)((time1 - time3)*1000000);
973                                 time3 = Sys_DoubleTime();
974                                 pass2 = (int)((time2 - time1)*1000000);
975                                 pass3 = (int)((time3 - time2)*1000000);
976                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
977                                                         pass1+pass2+pass3, pass1, pass2, pass3);
978                         }
979                 }
980
981 #if MEMPARANOIA
982                 Mem_CheckSentinelsGlobal();
983 #else
984                 if (developer_memorydebug.integer)
985                         Mem_CheckSentinelsGlobal();
986 #endif
987
988                 // if there is some time remaining from this frame, reset the timers
989                 if (cl_timer >= 0)
990                         cl_timer = 0;
991                 if (sv_timer >= 0)
992                 {
993                         svs.perf_acc_lost += sv_timer;
994                         sv_timer = 0;
995                 }
996
997                 host_framecount++;
998         }
999 }
1000
1001 //============================================================================
1002
1003 qboolean vid_opened = false;
1004 void Host_StartVideo(void)
1005 {
1006         if (!vid_opened && cls.state != ca_dedicated)
1007         {
1008                 vid_opened = true;
1009                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
1010                 NetConn_UpdateSockets();
1011                 VID_Start();
1012                 CDAudio_Startup();
1013         }
1014 }
1015
1016 char engineversion[128];
1017
1018 qboolean sys_nostdout = false;
1019
1020 extern void u8_Init(void);
1021 extern void Render_Init(void);
1022 extern void Mathlib_Init(void);
1023 extern void FS_Init_SelfPack(void);
1024 extern void FS_Init(void);
1025 extern void FS_Shutdown(void);
1026 extern void PR_Cmd_Init(void);
1027 extern void COM_Init_Commands(void);
1028 extern void FS_Init_Commands(void);
1029 extern qboolean host_stuffcmdsrun;
1030
1031 /*
1032 ====================
1033 Host_Init
1034 ====================
1035 */
1036 static void Host_Init (void)
1037 {
1038         int i;
1039         const char* os;
1040
1041         if (COM_CheckParm("-profilegameonly"))
1042                 Sys_AllowProfiling(false);
1043
1044         // LordHavoc: quake never seeded the random number generator before... heh
1045         if (COM_CheckParm("-benchmark"))
1046                 srand(0); // predictable random sequence for -benchmark
1047         else
1048                 srand((unsigned int)time(NULL));
1049
1050         // FIXME: this is evil, but possibly temporary
1051         // LordHavoc: doesn't seem very temporary...
1052         // LordHavoc: made this a saved cvar
1053 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
1054         if (COM_CheckParm("-developer"))
1055         {
1056                 developer.value = developer.integer = 1;
1057                 developer.string = "1";
1058         }
1059
1060         if (COM_CheckParm("-developer2"))
1061         {
1062                 developer.value = developer.integer = 1;
1063                 developer.string = "1";
1064                 developer_extra.value = developer_extra.integer = 1;
1065                 developer_extra.string = "1";
1066                 developer_insane.value = developer_insane.integer = 1;
1067                 developer_insane.string = "1";
1068                 developer_memory.value = developer_memory.integer = 1;
1069                 developer_memory.string = "1";
1070                 developer_memorydebug.value = developer_memorydebug.integer = 1;
1071                 developer_memorydebug.string = "1";
1072         }
1073
1074 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
1075         if (COM_CheckParm("-nostdout"))
1076                 sys_nostdout = 1;
1077
1078         // used by everything
1079         Memory_Init();
1080
1081         // initialize console command/cvar/alias/command execution systems
1082         Cmd_Init();
1083
1084         // initialize memory subsystem cvars/commands
1085         Memory_Init_Commands();
1086
1087         // initialize console and logging and its cvars/commands
1088         Con_Init();
1089
1090         // initialize various cvars that could not be initialized earlier
1091         u8_Init();
1092         Curl_Init_Commands();
1093         Cmd_Init_Commands();
1094         Sys_Init_Commands();
1095         COM_Init_Commands();
1096         FS_Init_Commands();
1097
1098         // initialize console window (only used by sys_win.c)
1099         Sys_InitConsole();
1100
1101         // initialize the self-pack (must be before COM_InitGameType as it may add command line options)
1102         FS_Init_SelfPack();
1103
1104         // detect gamemode from commandline options or executable name
1105         COM_InitGameType();
1106
1107         // construct a version string for the corner of the console
1108         os = DP_OS_NAME;
1109         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1110         Con_Printf("%s\n", engineversion);
1111
1112         // initialize ixtable
1113         Mathlib_Init();
1114
1115         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1116         FS_Init();
1117
1118         // must be after FS_Init
1119         Crypto_Init();
1120         Crypto_Init_Commands();
1121
1122         NetConn_Init();
1123         Curl_Init();
1124         //PR_Init();
1125         //PR_Cmd_Init();
1126         PRVM_Init();
1127         Mod_Init();
1128         World_Init();
1129         SV_Init();
1130         V_Init(); // some cvars needed by server player physics (cl_rollangle etc)
1131         Host_InitCommands();
1132         Host_InitLocal();
1133         Host_ServerOptions();
1134
1135         if (cls.state == ca_dedicated)
1136                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1137         else
1138         {
1139                 Con_DPrintf("Initializing client\n");
1140
1141                 R_Modules_Init();
1142                 Palette_Init();
1143                 MR_Init_Commands();
1144                 Thread_Init();
1145                 VID_Shared_Init();
1146                 VID_Init();
1147                 Render_Init();
1148                 S_Init();
1149                 CDAudio_Init();
1150                 Key_Init();
1151                 CL_Init();
1152         }
1153
1154         // set up the default startmap_sp and startmap_dm aliases (mods can
1155         // override these) and then execute the quake.rc startup script
1156         if (gamemode == GAME_NEHAHRA)
1157                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec " STARTCONFIGFILENAME "\n");
1158         else if (gamemode == GAME_TRANSFUSION)
1159                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec " STARTCONFIGFILENAME "\n");
1160         else if (gamemode == GAME_TEU)
1161                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1162         else
1163                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec " STARTCONFIGFILENAME "\n");
1164         Cbuf_Execute();
1165
1166         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1167         if (!host_stuffcmdsrun)
1168         {
1169                 Cbuf_AddText("exec default.cfg\nexec " CONFIGFILENAME "\nexec autoexec.cfg\nstuffcmds\n");
1170                 Cbuf_Execute();
1171         }
1172
1173         // put up the loading image so the user doesn't stare at a black screen...
1174         SCR_BeginLoadingPlaque();
1175
1176         // FIXME: put this into some neat design, but the menu should be allowed to crash
1177         // without crashing the whole game, so this should just be a short-time solution
1178
1179         // here comes the not so critical stuff
1180         if (setjmp(host_abortframe)) {
1181                 return;
1182         }
1183
1184         if (cls.state != ca_dedicated)
1185         {
1186                 MR_Init();
1187         }
1188
1189         // check for special benchmark mode
1190 // 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)
1191         i = COM_CheckParm("-benchmark");
1192         if (i && i + 1 < com_argc)
1193         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1194         {
1195                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1196                 Cbuf_Execute();
1197         }
1198
1199         // check for special demo mode
1200 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1201         i = COM_CheckParm("-demo");
1202         if (i && i + 1 < com_argc)
1203         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1204         {
1205                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1206                 Cbuf_Execute();
1207         }
1208
1209 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1210         i = COM_CheckParm("-capturedemo");
1211         if (i && i + 1 < com_argc)
1212         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1213         {
1214                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1215                 Cbuf_Execute();
1216         }
1217
1218         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1219         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1220         {
1221                 Cbuf_AddText("startmap_dm\n");
1222                 Cbuf_Execute();
1223         }
1224
1225         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1226         {
1227                 Cbuf_AddText("togglemenu\n");
1228                 Cbuf_Execute();
1229         }
1230
1231         Con_DPrint("========Initialized=========\n");
1232
1233         //Host_StartVideo();
1234 }
1235
1236
1237 /*
1238 ===============
1239 Host_Shutdown
1240
1241 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1242 to run quit through here before the final handoff to the sys code.
1243 ===============
1244 */
1245 void Host_Shutdown(void)
1246 {
1247         static qboolean isdown = false;
1248
1249         if (isdown)
1250         {
1251                 Con_Print("recursive shutdown\n");
1252                 return;
1253         }
1254         if (setjmp(host_abortframe))
1255         {
1256                 Con_Print("aborted the quitting frame?!?\n");
1257                 return;
1258         }
1259         isdown = true;
1260
1261         // be quiet while shutting down
1262         S_StopAllSounds();
1263
1264         // disconnect client from server if active
1265         CL_Disconnect();
1266
1267         // shut down local server if active
1268         Host_ShutdownServer ();
1269
1270         // Shutdown menu
1271         if(MR_Shutdown)
1272                 MR_Shutdown();
1273
1274         // AK shutdown PRVM
1275         // AK hmm, no PRVM_Shutdown(); yet
1276
1277         CL_Gecko_Shutdown();
1278         CL_Video_Shutdown();
1279
1280         Host_SaveConfig();
1281
1282         CDAudio_Shutdown ();
1283         S_Terminate ();
1284         Curl_Shutdown ();
1285         NetConn_Shutdown ();
1286         //PR_Shutdown ();
1287
1288         if (cls.state != ca_dedicated)
1289         {
1290                 R_Modules_Shutdown();
1291                 VID_Shutdown();
1292                 Thread_Shutdown();
1293         }
1294
1295         Cmd_Shutdown();
1296         Key_Shutdown();
1297         CL_Shutdown();
1298         Sys_Shutdown();
1299         Log_Close();
1300         Crypto_Shutdown();
1301         FS_Shutdown();
1302         Con_Shutdown();
1303         Memory_Shutdown();
1304 }
1305