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.text_lock)
52 Cbuf_Unlock(&cmd_client);
53 if (cmd_server.text_lock)
54 Cbuf_Unlock(&cmd_server);
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");
213 void Sys_UnloadLibrary (dllhandle_t* handle)
216 if (handle == NULL || *handle == NULL)
220 FreeLibrary (*handle);
229 void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
233 return (void *)GetProcAddress (handle, name);
235 return (void *)dlsym (handle, name);
243 # define HAVE_TIMEGETTIME 1
244 # define HAVE_QUERYPERFORMANCECOUNTER 1
245 # define HAVE_Sleep 1
249 #if defined(CLOCK_MONOTONIC) || defined(CLOCK_HIRES)
250 # define HAVE_CLOCKGETTIME 1
252 // FIXME improve this check, manpage hints to DST_NONE
253 # define HAVE_GETTIMEOFDAY 1
257 // on Win32, select() cannot be used with all three FD list args being NULL according to MSDN
258 // (so much for POSIX...)
260 # define HAVE_SELECT 1
265 // FIXME improve this check
266 # define HAVE_USLEEP 1
269 // this one is referenced elsewhere
270 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."};
273 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"};
274 static cvar_t sys_usesdlgetticks = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sys_usesdlgetticks", "0", "use SDL_GetTicks() timer (less accurate, for debugging)"};
275 static cvar_t sys_usesdldelay = {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sys_usesdldelay", "0", "use SDL_Delay() (less accurate, for debugging)"};
276 #if HAVE_QUERYPERFORMANCECOUNTER
277 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)"};
279 #if HAVE_CLOCKGETTIME
280 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)"};
283 static double benchmark_time; // actually always contains an integer amount of milliseconds, will eventually "overflow"
285 void Sys_Init_Commands (void)
287 Cvar_RegisterVariable(&sys_debugsleep);
288 Cvar_RegisterVariable(&sys_usenoclockbutbenchmark);
289 #if HAVE_TIMEGETTIME || HAVE_QUERYPERFORMANCECOUNTER || HAVE_CLOCKGETTIME || HAVE_GETTIMEOFDAY
290 if(sys_supportsdlgetticks)
292 Cvar_RegisterVariable(&sys_usesdlgetticks);
293 Cvar_RegisterVariable(&sys_usesdldelay);
296 #if HAVE_QUERYPERFORMANCECOUNTER
297 Cvar_RegisterVariable(&sys_usequeryperformancecounter);
299 #if HAVE_CLOCKGETTIME
300 Cvar_RegisterVariable(&sys_useclockgettime);
304 double Sys_DirtyTime(void)
306 // first all the OPTIONAL timers
308 // benchmark timer (fake clock)
309 if(sys_usenoclockbutbenchmark.integer)
311 double old_benchmark_time = benchmark_time;
313 if(benchmark_time == old_benchmark_time)
314 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
315 return benchmark_time * 0.000001;
317 #if HAVE_QUERYPERFORMANCECOUNTER
318 if (sys_usequeryperformancecounter.integer)
320 // LadyHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
321 // QueryPerformanceCounter
323 // Windows 95/98/ME/NT/2000/XP
325 // very accurate (CPU cycles)
327 // does not necessarily match realtime too well (tends to get faster and faster in win98)
328 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
330 LARGE_INTEGER PerformanceFreq;
331 LARGE_INTEGER PerformanceCount;
333 if (QueryPerformanceFrequency (&PerformanceFreq))
335 QueryPerformanceCounter (&PerformanceCount);
337 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
338 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 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
499 size_t exenamebuflen = sizeof(exenamebuf)-1;
500 if (sysctl(mib, 4, exenamebuf, &exenamebuflen, NULL, 0) == 0)
504 #elif defined(__linux__)
505 n = readlink("/proc/self/exe", exenamebuf, sizeof(exenamebuf)-1);
507 if(n > 0 && (size_t)(n) < sizeof(exenamebuf))
512 if(strchr(sys.argv[0], '/'))
513 return sys.argv[0]; // possibly a relative path
515 return Sys_FindInPATH(sys.argv[0], '/', getenv("PATH"), ':', exenamebuf, sizeof(exenamebuf));
519 void Sys_ProvideSelfFD(void)
523 sys.selffd = FS_SysOpenFD(Sys_FindExecutableName(), "rb", false);
526 // for x86 cpus only... (x64 has SSE2_PRESENT)
527 #if defined(SSE_POSSIBLE) && !defined(SSE2_PRESENT)
528 // code from SDL, shortened as we can expect CPUID to work
529 static int CPUID_Features(void)
532 # if defined((__GNUC__) || (__clang__) || (__TINYC__)) && defined(__i386__)
534 " movl %%ebx,%%edi\n"
535 " xorl %%eax,%%eax \n"
537 " cpuid # Get family/model/stepping/features\n"
539 " movl %%edi,%%ebx\n"
542 : "%eax", "%ecx", "%edx", "%edi"
544 # elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
548 cpuid ; Get family/model/stepping/features
552 # error SSE_POSSIBLE set but no CPUID implementation
559 qboolean Sys_HaveSSE(void)
561 // COMMANDLINEOPTION: SSE: -nosse disables SSE support and detection
562 if(COM_CheckParm("-nosse"))
567 // COMMANDLINEOPTION: SSE: -forcesse enables SSE support and disables detection
568 if(COM_CheckParm("-forcesse") || COM_CheckParm("-forcesse2"))
570 if(CPUID_Features() & (1 << 25))
576 qboolean Sys_HaveSSE2(void)
578 // COMMANDLINEOPTION: SSE2: -nosse2 disables SSE2 support and detection
579 if(COM_CheckParm("-nosse") || COM_CheckParm("-nosse2"))
584 // COMMANDLINEOPTION: SSE2: -forcesse2 enables SSE2 support and disables detection
585 if(COM_CheckParm("-forcesse2"))
587 if((CPUID_Features() & (3 << 25)) == (3 << 25)) // SSE is 1<<25, SSE2 is 1<<26
594 /// called to set process priority for dedicated servers
595 #if defined(__linux__)
596 #include <sys/resource.h>
599 void Sys_InitProcessNice (void)
602 sys.nicepossible = false;
603 if(COM_CheckParm("-nonice"))
606 sys.nicelevel = getpriority(PRIO_PROCESS, 0);
609 Con_Printf("Kernel does not support reading process priority - cannot use niceness\n");
612 if(getrlimit(RLIMIT_NICE, &lim))
614 Con_Printf("Kernel does not support lowering nice level again - cannot use niceness\n");
617 if(lim.rlim_cur != RLIM_INFINITY && sys.nicelevel < (int) (20 - lim.rlim_cur))
619 Con_Printf("Current nice level is below the soft limit - cannot use niceness\n");
622 sys.nicepossible = true;
625 void Sys_MakeProcessNice (void)
627 if(!sys.nicepossible)
631 Con_DPrintf("Process is becoming 'nice'...\n");
632 if(setpriority(PRIO_PROCESS, 0, 19))
633 Con_Printf(CON_ERROR "Failed to raise nice level to %d\n", 19);
636 void Sys_MakeProcessMean (void)
638 if(!sys.nicepossible)
642 Con_DPrintf("Process is becoming 'mean'...\n");
643 if(setpriority(PRIO_PROCESS, 0, sys.nicelevel))
644 Con_Printf(CON_ERROR "Failed to lower nice level to %d\n", sys.nicelevel);
648 void Sys_InitProcessNice (void)
651 void Sys_MakeProcessNice (void)
654 void Sys_MakeProcessMean (void)