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")
22 # include <sys/sysctl.h>
26 # include <sys/time.h>
33 static char sys_timestring[128];
34 char *Sys_TimeString(const char *timeformat)
36 time_t mytime = time(NULL);
39 localtime_s(&mytm, &mytime);
40 strftime(sys_timestring, sizeof(sys_timestring), timeformat, &mytm);
42 strftime(sys_timestring, sizeof(sys_timestring), timeformat, localtime(&mytime));
44 return sys_timestring;
48 void Sys_Quit (int returnvalue)
50 // Unlock mutexes because the quit command may jump directly here, causing a deadlock
51 if ((&cmd_client)->cbuf->lock)
52 Cbuf_Unlock((&cmd_client)->cbuf);
53 if ((&cmd_server)->cbuf->lock)
54 Cbuf_Unlock((&cmd_server)->cbuf);
55 SV_UnlockThreadMutex();
56 TaskQueue_Frame(true);
58 if (COM_CheckParm("-profilegameonly"))
59 Sys_AllowProfiling(false);
60 host.state = host_shutdown;
68 void Sys_AllowProfiling(qboolean enable)
72 extern void monstartup(const char *libname);
73 extern void moncleanup(void);
75 monstartup("libmain.so");
79 #elif (defined(__linux__) && (defined(__GLIBC__) || defined(__GNU_LIBRARY__))) || defined(__FreeBSD__)
80 extern int moncontrol(int);
87 ===============================================================================
91 ===============================================================================
94 static qboolean Sys_LoadLibraryFunctions(dllhandle_t dllhandle, const dllfunction_t *fcts, qboolean complain, qboolean has_next)
96 const dllfunction_t *func;
99 for (func = fcts; func && func->name != NULL; func++)
100 if (!(*func->funcvariable = (void *) Sys_GetProcAddress (dllhandle, func->name)))
104 Con_DPrintf (" - missing function \"%s\" - broken library!", func->name);
106 Con_DPrintf("\nContinuing with");
113 for (func = fcts; func && func->name != NULL; func++)
114 *func->funcvariable = NULL;
119 qboolean Sys_LoadLibrary (const char** dllnames, dllhandle_t* handle, const dllfunction_t *fcts)
122 const dllfunction_t *func;
123 dllhandle_t dllhandle = 0;
130 #ifdef PREFER_PRELOAD
131 dllhandle = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL);
132 if(Sys_LoadLibraryFunctions(dllhandle, fcts, false, false))
134 Con_DPrintf ("All of %s's functions were already linked in! Not loading dynamically...\n", dllnames[0]);
139 Sys_UnloadLibrary(&dllhandle);
145 for (func = fcts; func && func->name != NULL; func++)
146 *func->funcvariable = NULL;
148 // Try every possible name
149 Con_DPrintf ("Trying to load library...");
150 for (i = 0; dllnames[i] != NULL; i++)
152 Con_DPrintf (" \"%s\"", dllnames[i]);
154 # ifndef DONT_USE_SETDLLDIRECTORY
156 SetDllDirectory("bin64");
158 SetDllDirectory("bin32");
161 dllhandle = LoadLibrary (dllnames[i]);
162 // no need to unset this - we want ALL dlls to be loaded from there, anyway
164 dllhandle = dlopen (dllnames[i], RTLD_LAZY | RTLD_GLOBAL);
166 if (Sys_LoadLibraryFunctions(dllhandle, fcts, true, (dllnames[i+1] != NULL) || (strrchr(sys.argv[0], '/'))))
169 Sys_UnloadLibrary (&dllhandle);
172 // see if the names can be loaded relative to the executable path
173 // (this is for Mac OSX which does not check next to the executable)
174 if (!dllhandle && strrchr(sys.argv[0], '/'))
176 char path[MAX_OSPATH];
177 strlcpy(path, sys.argv[0], sizeof(path));
178 strrchr(path, '/')[1] = 0;
179 for (i = 0; dllnames[i] != NULL; i++)
181 char temp[MAX_OSPATH];
182 strlcpy(temp, path, sizeof(temp));
183 strlcat(temp, dllnames[i], sizeof(temp));
184 Con_DPrintf (" \"%s\"", temp);
186 dllhandle = LoadLibrary (temp);
188 dllhandle = dlopen (temp, RTLD_LAZY | RTLD_GLOBAL);
190 if (Sys_LoadLibraryFunctions(dllhandle, fcts, true, dllnames[i+1] != NULL))
193 Sys_UnloadLibrary (&dllhandle);
200 Con_DPrintf(" - failed.\n");
204 Con_DPrintf(" - loaded.\n");
205 Con_Printf("Loaded library \"%s\"\n", dllnames[i]);
214 void Sys_UnloadLibrary (dllhandle_t* handle)
217 if (handle == NULL || *handle == NULL)
221 FreeLibrary (*handle);
230 void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
234 return (void *)GetProcAddress (handle, name);
236 return (void *)dlsym (handle, name);
244 # define HAVE_TIMEGETTIME 1
245 # define HAVE_QUERYPERFORMANCECOUNTER 1
246 # define HAVE_Sleep 1
250 #if defined(CLOCK_MONOTONIC) || defined(CLOCK_HIRES)
251 # define HAVE_CLOCKGETTIME 1
253 // FIXME improve this check, manpage hints to DST_NONE
254 # define HAVE_GETTIMEOFDAY 1
258 // on Win32, select() cannot be used with all three FD list args being NULL according to MSDN
259 // (so much for POSIX...)
261 # define HAVE_SELECT 1
266 // FIXME improve this check
267 # define HAVE_USLEEP 1
270 // this one is referenced elsewhere
271 cvar_t sys_usenoclockbutbenchmark = {CVAR_CLIENT | CVAR_SERVER | 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."};
274 static cvar_t sys_debugsleep = {CVAR_CLIENT | CVAR_SERVER, "sys_debugsleep", "0", "write requested and attained sleep times to standard output, to be used with gnuplot"};
275 static cvar_t sys_usesdlgetticks = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sys_usesdlgetticks", "0", "use SDL_GetTicks() timer (less accurate, for debugging)"};
276 static cvar_t sys_usesdldelay = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sys_usesdldelay", "0", "use SDL_Delay() (less accurate, for debugging)"};
277 #if HAVE_QUERYPERFORMANCECOUNTER
278 static cvar_t sys_usequeryperformancecounter = {CVAR_CLIENT | CVAR_SERVER | 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)"};
280 #if HAVE_CLOCKGETTIME
281 static cvar_t sys_useclockgettime = {CVAR_CLIENT | CVAR_SERVER | 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)"};
284 static double benchmark_time; // actually always contains an integer amount of milliseconds, will eventually "overflow"
286 void Sys_Init_Commands (void)
288 Cvar_RegisterVariable(&sys_debugsleep);
289 Cvar_RegisterVariable(&sys_usenoclockbutbenchmark);
290 #if HAVE_TIMEGETTIME || HAVE_QUERYPERFORMANCECOUNTER || HAVE_CLOCKGETTIME || HAVE_GETTIMEOFDAY
291 if(sys_supportsdlgetticks)
293 Cvar_RegisterVariable(&sys_usesdlgetticks);
294 Cvar_RegisterVariable(&sys_usesdldelay);
297 #if HAVE_QUERYPERFORMANCECOUNTER
298 Cvar_RegisterVariable(&sys_usequeryperformancecounter);
300 #if HAVE_CLOCKGETTIME
301 Cvar_RegisterVariable(&sys_useclockgettime);
305 double Sys_DirtyTime(void)
307 // first all the OPTIONAL timers
309 // benchmark timer (fake clock)
310 if(sys_usenoclockbutbenchmark.integer)
312 double old_benchmark_time = benchmark_time;
314 if(benchmark_time == old_benchmark_time)
315 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
316 return benchmark_time * 0.000001;
318 #if HAVE_QUERYPERFORMANCECOUNTER
319 if (sys_usequeryperformancecounter.integer)
321 // LadyHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
322 // QueryPerformanceCounter
324 // Windows 95/98/ME/NT/2000/XP
326 // very accurate (CPU cycles)
328 // does not necessarily match realtime too well (tends to get faster and faster in win98)
329 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
331 LARGE_INTEGER PerformanceFreq;
332 LARGE_INTEGER PerformanceCount;
334 if (QueryPerformanceFrequency (&PerformanceFreq))
336 QueryPerformanceCounter (&PerformanceCount);
338 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
339 return ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
343 Con_Printf("No hardware timer available\n");
344 // fall back to other clock sources
345 Cvar_SetValueQuick(&sys_usequeryperformancecounter, false);
350 #if HAVE_CLOCKGETTIME
351 if (sys_useclockgettime.integer)
354 # ifdef CLOCK_MONOTONIC
356 clock_gettime(CLOCK_MONOTONIC, &ts);
359 clock_gettime(CLOCK_HIGHRES, &ts);
361 return (double) ts.tv_sec + ts.tv_nsec / 1000000000.0;
365 // now all the FALLBACK timers
366 if(sys_supportsdlgetticks && sys_usesdlgetticks.integer)
367 return (double) Sys_SDL_GetTicks() / 1000.0;
368 #if HAVE_GETTIMEOFDAY
371 gettimeofday(&tp, NULL);
372 return (double) tp.tv_sec + tp.tv_usec / 1000000.0;
374 #elif HAVE_TIMEGETTIME
376 static int firsttimegettime = true;
379 // Windows 95/98/ME/NT/2000/XP
381 // reasonable accuracy (millisecond)
383 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
385 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
386 if (firsttimegettime)
389 firsttimegettime = false;
392 return (double) timeGetTime() / 1000.0;
395 // fallback for using the SDL timer if no other timer is available
396 // this calls Sys_Error() if not linking against SDL
397 return (double) Sys_SDL_GetTicks() / 1000.0;
401 void Sys_Sleep(int microseconds)
404 if(sys_usenoclockbutbenchmark.integer)
408 double old_benchmark_time = benchmark_time;
409 benchmark_time += microseconds;
410 if(benchmark_time == old_benchmark_time)
411 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
415 if(sys_debugsleep.integer)
419 if(sys_supportsdlgetticks && sys_usesdldelay.integer)
421 Sys_SDL_Delay(microseconds / 1000);
427 tv.tv_sec = microseconds / 1000000;
428 tv.tv_usec = microseconds % 1000000;
429 select(0, NULL, NULL, NULL, &tv);
434 usleep(microseconds);
439 Sleep(microseconds / 1000);
444 Sys_SDL_Delay(microseconds / 1000);
447 if(sys_debugsleep.integer)
449 t = Sys_DirtyTime() - t;
450 Sys_PrintfToTerminal("%d %d # debugsleep\n", microseconds, (unsigned int)(t * 1000000));
454 void Sys_PrintfToTerminal(const char *fmt, ...)
457 char msg[MAX_INPUTLINE];
459 va_start(argptr,fmt);
460 dpvsnprintf(msg,sizeof(msg),fmt,argptr);
463 Sys_PrintToTerminal(msg);
467 static const char *Sys_FindInPATH(const char *name, char namesep, const char *PATH, char pathsep, char *buf, size_t bufsize)
469 const char *p = PATH;
473 while((q = strchr(p, ':')))
475 dpsnprintf(buf, bufsize, "%.*s%c%s", (int)(q-p), p, namesep, name);
476 if(FS_SysFileExists(buf))
480 if(!q) // none found - try the last item
482 dpsnprintf(buf, bufsize, "%s%c%s", p, namesep, name);
483 if(FS_SysFileExists(buf))
491 static const char *Sys_FindExecutableName(void)
496 static char exenamebuf[MAX_OSPATH+1];
498 #if defined(__FreeBSD__)
499 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
500 size_t exenamebuflen = sizeof(exenamebuf)-1;
501 if (sysctl(mib, 4, exenamebuf, &exenamebuflen, NULL, 0) == 0)
505 #elif defined(__linux__)
506 n = readlink("/proc/self/exe", exenamebuf, sizeof(exenamebuf)-1);
508 if(n > 0 && (size_t)(n) < sizeof(exenamebuf))
513 if(strchr(sys.argv[0], '/'))
514 return sys.argv[0]; // possibly a relative path
516 return Sys_FindInPATH(sys.argv[0], '/', getenv("PATH"), ':', exenamebuf, sizeof(exenamebuf));
520 void Sys_ProvideSelfFD(void)
524 sys.selffd = FS_SysOpenFD(Sys_FindExecutableName(), "rb", false);
527 // for x86 cpus only... (x64 has SSE2_PRESENT)
528 #if defined(SSE_POSSIBLE) && !defined(SSE2_PRESENT)
529 // code from SDL, shortened as we can expect CPUID to work
530 static int CPUID_Features(void)
533 # if defined((__GNUC__) || (__clang__) || (__TINYC__)) && defined(__i386__)
535 " movl %%ebx,%%edi\n"
536 " xorl %%eax,%%eax \n"
538 " cpuid # Get family/model/stepping/features\n"
540 " movl %%edi,%%ebx\n"
543 : "%eax", "%ecx", "%edx", "%edi"
545 # elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
549 cpuid ; Get family/model/stepping/features
553 # error SSE_POSSIBLE set but no CPUID implementation
560 qboolean Sys_HaveSSE(void)
562 // COMMANDLINEOPTION: SSE: -nosse disables SSE support and detection
563 if(COM_CheckParm("-nosse"))
568 // COMMANDLINEOPTION: SSE: -forcesse enables SSE support and disables detection
569 if(COM_CheckParm("-forcesse") || COM_CheckParm("-forcesse2"))
571 if(CPUID_Features() & (1 << 25))
577 qboolean Sys_HaveSSE2(void)
579 // COMMANDLINEOPTION: SSE2: -nosse2 disables SSE2 support and detection
580 if(COM_CheckParm("-nosse") || COM_CheckParm("-nosse2"))
585 // COMMANDLINEOPTION: SSE2: -forcesse2 enables SSE2 support and disables detection
586 if(COM_CheckParm("-forcesse2"))
588 if((CPUID_Features() & (3 << 25)) == (3 << 25)) // SSE is 1<<25, SSE2 is 1<<26
595 /// called to set process priority for dedicated servers
596 #if defined(__linux__)
597 #include <sys/resource.h>
600 void Sys_InitProcessNice (void)
603 sys.nicepossible = false;
604 if(COM_CheckParm("-nonice"))
607 sys.nicelevel = getpriority(PRIO_PROCESS, 0);
610 Con_Printf("Kernel does not support reading process priority - cannot use niceness\n");
613 if(getrlimit(RLIMIT_NICE, &lim))
615 Con_Printf("Kernel does not support lowering nice level again - cannot use niceness\n");
618 if(lim.rlim_cur != RLIM_INFINITY && sys.nicelevel < (int) (20 - lim.rlim_cur))
620 Con_Printf("Current nice level is below the soft limit - cannot use niceness\n");
623 sys.nicepossible = true;
626 void Sys_MakeProcessNice (void)
628 if(!sys.nicepossible)
632 Con_DPrintf("Process is becoming 'nice'...\n");
633 if(setpriority(PRIO_PROCESS, 0, 19))
634 Con_Printf(CON_ERROR "Failed to raise nice level to %d\n", 19);
637 void Sys_MakeProcessMean (void)
639 if(!sys.nicepossible)
643 Con_DPrintf("Process is becoming 'mean'...\n");
644 if(setpriority(PRIO_PROCESS, 0, sys.nicelevel))
645 Con_Printf(CON_ERROR "Failed to lower nice level to %d\n", sys.nicelevel);
649 void Sys_InitProcessNice (void)
652 void Sys_MakeProcessNice (void)
655 void Sys_MakeProcessMean (void)