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);
338 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
339 return ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
341 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
342 return ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
347 Con_Printf("No hardware timer available\n");
348 // fall back to other clock sources
349 Cvar_SetValueQuick(&sys_usequeryperformancecounter, false);
354 #if HAVE_CLOCKGETTIME
355 if (sys_useclockgettime.integer)
358 # ifdef CLOCK_MONOTONIC
360 clock_gettime(CLOCK_MONOTONIC, &ts);
363 clock_gettime(CLOCK_HIGHRES, &ts);
365 return (double) ts.tv_sec + ts.tv_nsec / 1000000000.0;
369 // now all the FALLBACK timers
370 if(sys_supportsdlgetticks && sys_usesdlgetticks.integer)
371 return (double) Sys_SDL_GetTicks() / 1000.0;
372 #if HAVE_GETTIMEOFDAY
375 gettimeofday(&tp, NULL);
376 return (double) tp.tv_sec + tp.tv_usec / 1000000.0;
378 #elif HAVE_TIMEGETTIME
380 static int firsttimegettime = true;
383 // Windows 95/98/ME/NT/2000/XP
385 // reasonable accuracy (millisecond)
387 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
389 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
390 if (firsttimegettime)
393 firsttimegettime = false;
396 return (double) timeGetTime() / 1000.0;
399 // fallback for using the SDL timer if no other timer is available
400 // this calls Sys_Error() if not linking against SDL
401 return (double) Sys_SDL_GetTicks() / 1000.0;
405 void Sys_Sleep(int microseconds)
408 if(sys_usenoclockbutbenchmark.integer)
412 double old_benchmark_time = benchmark_time;
413 benchmark_time += microseconds;
414 if(benchmark_time == old_benchmark_time)
415 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
419 if(sys_debugsleep.integer)
423 if(sys_supportsdlgetticks && sys_usesdldelay.integer)
425 Sys_SDL_Delay(microseconds / 1000);
431 tv.tv_sec = microseconds / 1000000;
432 tv.tv_usec = microseconds % 1000000;
433 select(0, NULL, NULL, NULL, &tv);
438 usleep(microseconds);
443 Sleep(microseconds / 1000);
448 Sys_SDL_Delay(microseconds / 1000);
451 if(sys_debugsleep.integer)
453 t = Sys_DirtyTime() - t;
454 Sys_PrintfToTerminal("%d %d # debugsleep\n", microseconds, (unsigned int)(t * 1000000));
458 void Sys_PrintfToTerminal(const char *fmt, ...)
461 char msg[MAX_INPUTLINE];
463 va_start(argptr,fmt);
464 dpvsnprintf(msg,sizeof(msg),fmt,argptr);
467 Sys_PrintToTerminal(msg);
471 static const char *Sys_FindInPATH(const char *name, char namesep, const char *PATH, char pathsep, char *buf, size_t bufsize)
473 const char *p = PATH;
477 while((q = strchr(p, ':')))
479 dpsnprintf(buf, bufsize, "%.*s%c%s", (int)(q-p), p, namesep, name);
480 if(FS_SysFileExists(buf))
484 if(!q) // none found - try the last item
486 dpsnprintf(buf, bufsize, "%s%c%s", p, namesep, name);
487 if(FS_SysFileExists(buf))
495 static const char *Sys_FindExecutableName(void)
500 static char exenamebuf[MAX_OSPATH+1];
502 #if defined(__FreeBSD__)
503 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
504 size_t exenamebuflen = sizeof(exenamebuf)-1;
505 if (sysctl(mib, 4, exenamebuf, &exenamebuflen, NULL, 0) == 0)
509 #elif defined(__linux__)
510 n = readlink("/proc/self/exe", exenamebuf, sizeof(exenamebuf)-1);
512 if(n > 0 && (size_t)(n) < sizeof(exenamebuf))
517 if(strchr(sys.argv[0], '/'))
518 return sys.argv[0]; // possibly a relative path
520 return Sys_FindInPATH(sys.argv[0], '/', getenv("PATH"), ':', exenamebuf, sizeof(exenamebuf));
524 void Sys_ProvideSelfFD(void)
528 sys.selffd = FS_SysOpenFD(Sys_FindExecutableName(), "rb", false);
531 // for x86 cpus only... (x64 has SSE2_PRESENT)
532 #if defined(SSE_POSSIBLE) && !defined(SSE2_PRESENT)
533 // code from SDL, shortened as we can expect CPUID to work
534 static int CPUID_Features(void)
537 # if defined((__GNUC__) || (__clang__) || (__TINYC__)) && defined(__i386__)
539 " movl %%ebx,%%edi\n"
540 " xorl %%eax,%%eax \n"
542 " cpuid # Get family/model/stepping/features\n"
544 " movl %%edi,%%ebx\n"
547 : "%eax", "%ecx", "%edx", "%edi"
549 # elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
553 cpuid ; Get family/model/stepping/features
557 # error SSE_POSSIBLE set but no CPUID implementation
564 qboolean Sys_HaveSSE(void)
566 // COMMANDLINEOPTION: SSE: -nosse disables SSE support and detection
567 if(COM_CheckParm("-nosse"))
572 // COMMANDLINEOPTION: SSE: -forcesse enables SSE support and disables detection
573 if(COM_CheckParm("-forcesse") || COM_CheckParm("-forcesse2"))
575 if(CPUID_Features() & (1 << 25))
581 qboolean Sys_HaveSSE2(void)
583 // COMMANDLINEOPTION: SSE2: -nosse2 disables SSE2 support and detection
584 if(COM_CheckParm("-nosse") || COM_CheckParm("-nosse2"))
589 // COMMANDLINEOPTION: SSE2: -forcesse2 enables SSE2 support and disables detection
590 if(COM_CheckParm("-forcesse2"))
592 if((CPUID_Features() & (3 << 25)) == (3 << 25)) // SSE is 1<<25, SSE2 is 1<<26
599 /// called to set process priority for dedicated servers
600 #if defined(__linux__)
601 #include <sys/resource.h>
604 void Sys_InitProcessNice (void)
607 sys.nicepossible = false;
608 if(COM_CheckParm("-nonice"))
611 sys.nicelevel = getpriority(PRIO_PROCESS, 0);
614 Con_Printf("Kernel does not support reading process priority - cannot use niceness\n");
617 if(getrlimit(RLIMIT_NICE, &lim))
619 Con_Printf("Kernel does not support lowering nice level again - cannot use niceness\n");
622 if(lim.rlim_cur != RLIM_INFINITY && sys.nicelevel < (int) (20 - lim.rlim_cur))
624 Con_Printf("Current nice level is below the soft limit - cannot use niceness\n");
627 sys.nicepossible = true;
630 void Sys_MakeProcessNice (void)
632 if(!sys.nicepossible)
636 Con_DPrintf("Process is becoming 'nice'...\n");
637 if(setpriority(PRIO_PROCESS, 0, 19))
638 Con_Printf(CON_ERROR "Failed to raise nice level to %d\n", 19);
641 void Sys_MakeProcessMean (void)
643 if(!sys.nicepossible)
647 Con_DPrintf("Process is becoming 'mean'...\n");
648 if(setpriority(PRIO_PROCESS, 0, sys.nicelevel))
649 Con_Printf(CON_ERROR "Failed to lower nice level to %d\n", sys.nicelevel);
653 void Sys_InitProcessNice (void)
656 void Sys_MakeProcessNice (void)
659 void Sys_MakeProcessMean (void)