2 # ifndef DONT_USE_SETDLLDIRECTORY
3 # define _WIN32_WINNT 0x0502
15 # include <mmsystem.h> // timeGetTime
16 # include <time.h> // localtime
18 #pragma comment(lib, "winmm.lib")
23 # include <sys/time.h>
30 static char sys_timestring[128];
31 char *Sys_TimeString(const char *timeformat)
33 time_t mytime = time(NULL);
36 localtime_s(&mytm, &mytime);
37 strftime(sys_timestring, sizeof(sys_timestring), timeformat, &mytm);
39 strftime(sys_timestring, sizeof(sys_timestring), timeformat, localtime(&mytime));
41 return sys_timestring;
45 extern qboolean host_shuttingdown;
46 void Sys_Quit (int returnvalue)
48 // Unlock mutexes because the quit command may jump directly here, causing a deadlock
49 Cbuf_UnlockThreadMutex();
50 SV_UnlockThreadMutex();
51 TaskQueue_Frame(true);
53 if (COM_CheckParm("-profilegameonly"))
54 Sys_AllowProfiling(false);
55 host_shuttingdown = true;
63 void Sys_AllowProfiling(qboolean enable)
67 extern void monstartup(const char *libname);
68 extern void moncleanup(void);
70 monstartup("libmain.so");
74 #elif defined(__linux__) || defined(__FreeBSD__)
75 extern int moncontrol(int);
82 ===============================================================================
86 ===============================================================================
89 static qboolean Sys_LoadLibraryFunctions(dllhandle_t dllhandle, const dllfunction_t *fcts, qboolean complain, qboolean has_next)
91 const dllfunction_t *func;
94 for (func = fcts; func && func->name != NULL; func++)
95 if (!(*func->funcvariable = (void *) Sys_GetProcAddress (dllhandle, func->name)))
99 Con_DPrintf (" - missing function \"%s\" - broken library!", func->name);
101 Con_DPrintf("\nContinuing with");
108 for (func = fcts; func && func->name != NULL; func++)
109 *func->funcvariable = NULL;
114 qboolean Sys_LoadLibrary (const char** dllnames, dllhandle_t* handle, const dllfunction_t *fcts)
117 const dllfunction_t *func;
118 dllhandle_t dllhandle = 0;
125 #ifdef PREFER_PRELOAD
126 dllhandle = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL);
127 if(Sys_LoadLibraryFunctions(dllhandle, fcts, false, false))
129 Con_DPrintf ("All of %s's functions were already linked in! Not loading dynamically...\n", dllnames[0]);
134 Sys_UnloadLibrary(&dllhandle);
140 for (func = fcts; func && func->name != NULL; func++)
141 *func->funcvariable = NULL;
143 // Try every possible name
144 Con_DPrintf ("Trying to load library...");
145 for (i = 0; dllnames[i] != NULL; i++)
147 Con_DPrintf (" \"%s\"", dllnames[i]);
149 # ifndef DONT_USE_SETDLLDIRECTORY
151 SetDllDirectory("bin64");
153 SetDllDirectory("bin32");
156 dllhandle = LoadLibrary (dllnames[i]);
157 // no need to unset this - we want ALL dlls to be loaded from there, anyway
159 dllhandle = dlopen (dllnames[i], RTLD_LAZY | RTLD_GLOBAL);
161 if (Sys_LoadLibraryFunctions(dllhandle, fcts, true, (dllnames[i+1] != NULL) || (strrchr(com_argv[0], '/'))))
164 Sys_UnloadLibrary (&dllhandle);
167 // see if the names can be loaded relative to the executable path
168 // (this is for Mac OSX which does not check next to the executable)
169 if (!dllhandle && strrchr(com_argv[0], '/'))
171 char path[MAX_OSPATH];
172 strlcpy(path, com_argv[0], sizeof(path));
173 strrchr(path, '/')[1] = 0;
174 for (i = 0; dllnames[i] != NULL; i++)
176 char temp[MAX_OSPATH];
177 strlcpy(temp, path, sizeof(temp));
178 strlcat(temp, dllnames[i], sizeof(temp));
179 Con_DPrintf (" \"%s\"", temp);
181 dllhandle = LoadLibrary (temp);
183 dllhandle = dlopen (temp, RTLD_LAZY | RTLD_GLOBAL);
185 if (Sys_LoadLibraryFunctions(dllhandle, fcts, true, dllnames[i+1] != NULL))
188 Sys_UnloadLibrary (&dllhandle);
195 Con_DPrintf(" - failed.\n");
199 Con_DPrintf(" - loaded.\n");
208 void Sys_UnloadLibrary (dllhandle_t* handle)
211 if (handle == NULL || *handle == NULL)
215 FreeLibrary (*handle);
224 void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
228 return (void *)GetProcAddress (handle, name);
230 return (void *)dlsym (handle, name);
238 # define HAVE_TIMEGETTIME 1
239 # define HAVE_QUERYPERFORMANCECOUNTER 1
240 # define HAVE_Sleep 1
244 #if defined(CLOCK_MONOTONIC) || defined(CLOCK_HIRES)
245 # define HAVE_CLOCKGETTIME 1
247 // FIXME improve this check, manpage hints to DST_NONE
248 # define HAVE_GETTIMEOFDAY 1
252 // on Win32, select() cannot be used with all three FD list args being NULL according to MSDN
253 // (so much for POSIX...)
255 # define HAVE_SELECT 1
260 // FIXME improve this check
261 # define HAVE_USLEEP 1
264 // this one is referenced elsewhere
265 cvar_t sys_usenoclockbutbenchmark = {CVAR_SAVE, "sys_usenoclockbutbenchmark", "0", "don't use ANY real timing, and simulate a clock (for benchmarking); the game then runs as fast as possible. Run a QC mod with bots that does some stuff, then does a quit at the end, to benchmark a server. NEVER do this on a public server."};
268 static cvar_t sys_debugsleep = {0, "sys_debugsleep", "0", "write requested and attained sleep times to standard output, to be used with gnuplot"};
269 static cvar_t sys_usesdlgetticks = {CVAR_SAVE, "sys_usesdlgetticks", "0", "use SDL_GetTicks() timer (less accurate, for debugging)"};
270 static cvar_t sys_usesdldelay = {CVAR_SAVE, "sys_usesdldelay", "0", "use SDL_Delay() (less accurate, for debugging)"};
271 #if HAVE_QUERYPERFORMANCECOUNTER
272 static cvar_t sys_usequeryperformancecounter = {CVAR_SAVE, "sys_usequeryperformancecounter", "0", "use windows QueryPerformanceCounter timer (which has issues on multicore/multiprocessor machines and processors which are designed to conserve power) for timing rather than timeGetTime function (which has issues on some motherboards)"};
274 #if HAVE_CLOCKGETTIME
275 static cvar_t sys_useclockgettime = {CVAR_SAVE, "sys_useclockgettime", "1", "use POSIX clock_gettime function (not adjusted by NTP on some older Linux kernels) for timing rather than gettimeofday (which has issues if the system time is stepped by ntpdate, or apparently on some Xen installations)"};
278 static double benchmark_time; // actually always contains an integer amount of milliseconds, will eventually "overflow"
280 void Sys_Init_Commands (void)
282 Cvar_RegisterVariable(&sys_debugsleep);
283 Cvar_RegisterVariable(&sys_usenoclockbutbenchmark);
284 #if HAVE_TIMEGETTIME || HAVE_QUERYPERFORMANCECOUNTER || HAVE_CLOCKGETTIME || HAVE_GETTIMEOFDAY
285 if(sys_supportsdlgetticks)
287 Cvar_RegisterVariable(&sys_usesdlgetticks);
288 Cvar_RegisterVariable(&sys_usesdldelay);
291 #if HAVE_QUERYPERFORMANCECOUNTER
292 Cvar_RegisterVariable(&sys_usequeryperformancecounter);
294 #if HAVE_CLOCKGETTIME
295 Cvar_RegisterVariable(&sys_useclockgettime);
299 double Sys_DirtyTime(void)
301 // first all the OPTIONAL timers
303 // benchmark timer (fake clock)
304 if(sys_usenoclockbutbenchmark.integer)
306 double old_benchmark_time = benchmark_time;
308 if(benchmark_time == old_benchmark_time)
309 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
310 return benchmark_time * 0.000001;
312 #if HAVE_QUERYPERFORMANCECOUNTER
313 if (sys_usequeryperformancecounter.integer)
315 // LadyHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
316 // QueryPerformanceCounter
318 // Windows 95/98/ME/NT/2000/XP
320 // very accurate (CPU cycles)
322 // does not necessarily match realtime too well (tends to get faster and faster in win98)
323 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
325 LARGE_INTEGER PerformanceFreq;
326 LARGE_INTEGER PerformanceCount;
328 if (QueryPerformanceFrequency (&PerformanceFreq))
330 QueryPerformanceCounter (&PerformanceCount);
333 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
334 return ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
336 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
337 return ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
342 Con_Printf("No hardware timer available\n");
343 // fall back to other clock sources
344 Cvar_SetValueQuick(&sys_usequeryperformancecounter, false);
349 #if HAVE_CLOCKGETTIME
350 if (sys_useclockgettime.integer)
353 # ifdef CLOCK_MONOTONIC
355 clock_gettime(CLOCK_MONOTONIC, &ts);
358 clock_gettime(CLOCK_HIGHRES, &ts);
360 return (double) ts.tv_sec + ts.tv_nsec / 1000000000.0;
364 // now all the FALLBACK timers
365 if(sys_supportsdlgetticks && sys_usesdlgetticks.integer)
366 return (double) Sys_SDL_GetTicks() / 1000.0;
367 #if HAVE_GETTIMEOFDAY
370 gettimeofday(&tp, NULL);
371 return (double) tp.tv_sec + tp.tv_usec / 1000000.0;
373 #elif HAVE_TIMEGETTIME
375 static int firsttimegettime = true;
378 // Windows 95/98/ME/NT/2000/XP
380 // reasonable accuracy (millisecond)
382 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
384 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
385 if (firsttimegettime)
388 firsttimegettime = false;
391 return (double) timeGetTime() / 1000.0;
394 // fallback for using the SDL timer if no other timer is available
395 // this calls Sys_Error() if not linking against SDL
396 return (double) Sys_SDL_GetTicks() / 1000.0;
400 void Sys_Sleep(int microseconds)
403 if(sys_usenoclockbutbenchmark.integer)
407 double old_benchmark_time = benchmark_time;
408 benchmark_time += microseconds;
409 if(benchmark_time == old_benchmark_time)
410 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
414 if(sys_debugsleep.integer)
418 if(sys_supportsdlgetticks && sys_usesdldelay.integer)
420 Sys_SDL_Delay(microseconds / 1000);
426 tv.tv_sec = microseconds / 1000000;
427 tv.tv_usec = microseconds % 1000000;
428 select(0, NULL, NULL, NULL, &tv);
433 usleep(microseconds);
438 Sleep(microseconds / 1000);
443 Sys_SDL_Delay(microseconds / 1000);
446 if(sys_debugsleep.integer)
448 t = Sys_DirtyTime() - t;
449 Sys_PrintfToTerminal("%d %d # debugsleep\n", microseconds, (unsigned int)(t * 1000000));
453 void Sys_PrintfToTerminal(const char *fmt, ...)
456 char msg[MAX_INPUTLINE];
458 va_start(argptr,fmt);
459 dpvsnprintf(msg,sizeof(msg),fmt,argptr);
462 Sys_PrintToTerminal(msg);
466 static const char *Sys_FindInPATH(const char *name, char namesep, const char *PATH, char pathsep, char *buf, size_t bufsize)
468 const char *p = PATH;
472 while((q = strchr(p, ':')))
474 dpsnprintf(buf, bufsize, "%.*s%c%s", (int)(q-p), p, namesep, name);
475 if(FS_SysFileExists(buf))
479 if(!q) // none found - try the last item
481 dpsnprintf(buf, bufsize, "%s%c%s", p, namesep, name);
482 if(FS_SysFileExists(buf))
490 static const char *Sys_FindExecutableName(void)
495 static char exenamebuf[MAX_OSPATH+1];
497 #if defined(__FreeBSD__)
498 n = readlink("/proc/curproc/file", exenamebuf, sizeof(exenamebuf)-1);
499 #elif defined(__linux__)
500 n = readlink("/proc/self/exe", exenamebuf, sizeof(exenamebuf)-1);
502 if(n > 0 && (size_t)(n) < sizeof(exenamebuf))
507 if(strchr(com_argv[0], '/'))
508 return com_argv[0]; // possibly a relative path
510 return Sys_FindInPATH(com_argv[0], '/', getenv("PATH"), ':', exenamebuf, sizeof(exenamebuf));
514 void Sys_ProvideSelfFD(void)
518 com_selffd = FS_SysOpenFD(Sys_FindExecutableName(), "rb", false);
521 // for x86 cpus only... (x64 has SSE2_PRESENT)
522 #if defined(SSE_POSSIBLE) && !defined(SSE2_PRESENT)
523 // code from SDL, shortened as we can expect CPUID to work
524 static int CPUID_Features(void)
527 # if defined(__GNUC__) && defined(__i386__)
529 " movl %%ebx,%%edi\n"
530 " xorl %%eax,%%eax \n"
532 " cpuid # Get family/model/stepping/features\n"
534 " movl %%edi,%%ebx\n"
537 : "%eax", "%ecx", "%edx", "%edi"
539 # elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
543 cpuid ; Get family/model/stepping/features
547 # error SSE_POSSIBLE set but no CPUID implementation
554 qboolean Sys_HaveSSE(void)
556 // COMMANDLINEOPTION: SSE: -nosse disables SSE support and detection
557 if(COM_CheckParm("-nosse"))
562 // COMMANDLINEOPTION: SSE: -forcesse enables SSE support and disables detection
563 if(COM_CheckParm("-forcesse") || COM_CheckParm("-forcesse2"))
565 if(CPUID_Features() & (1 << 25))
571 qboolean Sys_HaveSSE2(void)
573 // COMMANDLINEOPTION: SSE2: -nosse2 disables SSE2 support and detection
574 if(COM_CheckParm("-nosse") || COM_CheckParm("-nosse2"))
579 // COMMANDLINEOPTION: SSE2: -forcesse2 enables SSE2 support and disables detection
580 if(COM_CheckParm("-forcesse2"))
582 if((CPUID_Features() & (3 << 25)) == (3 << 25)) // SSE is 1<<25, SSE2 is 1<<26
589 /// called to set process priority for dedicated servers
590 #if defined(__linux__)
591 #include <sys/resource.h>
593 static int nicelevel;
594 static qboolean nicepossible;
595 static qboolean isnice;
596 void Sys_InitProcessNice (void)
599 nicepossible = false;
600 if(COM_CheckParm("-nonice"))
603 nicelevel = getpriority(PRIO_PROCESS, 0);
606 Con_Printf("Kernel does not support reading process priority - cannot use niceness\n");
609 if(getrlimit(RLIMIT_NICE, &lim))
611 Con_Printf("Kernel does not support lowering nice level again - cannot use niceness\n");
614 if(lim.rlim_cur != RLIM_INFINITY && nicelevel < (int) (20 - lim.rlim_cur))
616 Con_Printf("Current nice level is below the soft limit - cannot use niceness\n");
622 void Sys_MakeProcessNice (void)
628 Con_DPrintf("Process is becoming 'nice'...\n");
629 if(setpriority(PRIO_PROCESS, 0, 19))
630 Con_Printf("Failed to raise nice level to %d\n", 19);
633 void Sys_MakeProcessMean (void)
639 Con_DPrintf("Process is becoming 'mean'...\n");
640 if(setpriority(PRIO_PROCESS, 0, nicelevel))
641 Con_Printf("Failed to lower nice level to %d\n", nicelevel);
645 void Sys_InitProcessNice (void)
648 void Sys_MakeProcessNice (void)
651 void Sys_MakeProcessMean (void)