2 # ifndef DONT_USE_SETDLLDIRECTORY
3 # define _WIN32_WINNT 0x0502
11 # include <mmsystem.h> // timeGetTime
12 # include <time.h> // localtime
13 # include <conio.h> // _kbhit, _getch, _putch
14 # include <io.h> // write; Include this BEFORE darkplaces.h because it uses strncpy which trips DP_STATIC_ASSERT
16 #pragma comment(lib, "winmm.lib")
20 # include <sys/sysctl.h>
23 # include <android/log.h>
27 # include <sys/time.h>
37 #include "taskqueue.h"
43 static char sys_timestring[128];
44 char *Sys_TimeString(const char *timeformat)
46 time_t mytime = time(NULL);
49 localtime_s(&mytm, &mytime);
50 strftime(sys_timestring, sizeof(sys_timestring), timeformat, &mytm);
52 strftime(sys_timestring, sizeof(sys_timestring), timeformat, localtime(&mytime));
54 return sys_timestring;
58 void Sys_Quit (int returnvalue)
60 // Unlock mutexes because the quit command may jump directly here, causing a deadlock
61 if ((cmd_local)->cbuf->lock)
62 Cbuf_Unlock((cmd_local)->cbuf);
63 SV_UnlockThreadMutex();
64 TaskQueue_Frame(true);
66 if (Sys_CheckParm("-profilegameonly"))
67 Sys_AllowProfiling(false);
68 host.state = host_shutdown;
72 Sys_AllowProfiling(false);
75 fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~O_NONBLOCK);
85 void Sys_AllowProfiling(qbool enable)
89 extern void monstartup(const char *libname);
90 extern void moncleanup(void);
92 monstartup("libmain.so");
96 #elif (defined(__linux__) && (defined(__GLIBC__) || defined(__GNU_LIBRARY__))) || defined(__FreeBSD__)
97 extern int moncontrol(int);
104 ===============================================================================
108 ===============================================================================
111 static qbool Sys_LoadDependencyFunctions(dllhandle_t dllhandle, const dllfunction_t *fcts, qbool complain, qbool has_next)
113 const dllfunction_t *func;
116 for (func = fcts; func && func->name != NULL; func++)
117 if (!(*func->funcvariable = (void *) Sys_GetProcAddress (dllhandle, func->name)))
121 Con_DPrintf (" - missing function \"%s\" - broken library!", func->name);
123 Con_DPrintf("\nContinuing with");
130 for (func = fcts; func && func->name != NULL; func++)
131 *func->funcvariable = NULL;
136 qbool Sys_LoadSelf(dllhandle_t *handle)
138 dllhandle_t dllhandle = 0;
143 dllhandle = LoadLibrary (NULL);
145 dllhandle = dlopen (NULL, RTLD_NOW | RTLD_GLOBAL);
151 qbool Sys_LoadDependency (const char** dllnames, dllhandle_t* handle, const dllfunction_t *fcts)
154 const dllfunction_t *func;
155 dllhandle_t dllhandle = 0;
162 #ifdef PREFER_PRELOAD
163 dllhandle = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL);
164 if(Sys_LoadDependencyFunctions(dllhandle, fcts, false, false))
166 Con_DPrintf ("All of %s's functions were already linked in! Not loading dynamically...\n", dllnames[0]);
171 Sys_FreeLibrary(&dllhandle);
177 for (func = fcts; func && func->name != NULL; func++)
178 *func->funcvariable = NULL;
180 // Try every possible name
181 Con_DPrintf ("Trying to load library...");
182 for (i = 0; dllnames[i] != NULL; i++)
184 Con_DPrintf (" \"%s\"", dllnames[i]);
186 # ifndef DONT_USE_SETDLLDIRECTORY
188 SetDllDirectory("bin64");
190 SetDllDirectory("bin32");
194 if(Sys_LoadLibrary(dllnames[i], &dllhandle))
196 if (Sys_LoadDependencyFunctions(dllhandle, fcts, true, (dllnames[i+1] != NULL) || (strrchr(sys.argv[0], '/'))))
199 Sys_FreeLibrary (&dllhandle);
203 // see if the names can be loaded relative to the executable path
204 // (this is for Mac OSX which does not check next to the executable)
205 if (!dllhandle && strrchr(sys.argv[0], '/'))
207 char path[MAX_OSPATH];
208 strlcpy(path, sys.argv[0], sizeof(path));
209 strrchr(path, '/')[1] = 0;
210 for (i = 0; dllnames[i] != NULL; i++)
212 char temp[MAX_OSPATH];
213 strlcpy(temp, path, sizeof(temp));
214 strlcat(temp, dllnames[i], sizeof(temp));
215 Con_DPrintf (" \"%s\"", temp);
217 if(Sys_LoadLibrary(temp, &dllhandle))
219 if (Sys_LoadDependencyFunctions(dllhandle, fcts, true, (dllnames[i+1] != NULL) || (strrchr(sys.argv[0], '/'))))
222 Sys_FreeLibrary (&dllhandle);
230 Con_DPrintf(" - failed.\n");
234 Con_DPrintf(" - loaded.\n");
235 Con_Printf("Loaded library \"%s\"\n", dllnames[i]);
244 qbool Sys_LoadLibrary(const char *name, dllhandle_t *handle)
246 dllhandle_t dllhandle = 0;
253 dllhandle = LoadLibrary (name);
255 dllhandle = dlopen (name, RTLD_LAZY | RTLD_GLOBAL);
265 void Sys_FreeLibrary (dllhandle_t* handle)
268 if (handle == NULL || *handle == NULL)
272 FreeLibrary (*handle);
281 void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
285 return (void *)GetProcAddress (handle, name);
287 return (void *)dlsym (handle, name);
295 # define HAVE_TIMEGETTIME 1
296 # define HAVE_QUERYPERFORMANCECOUNTER 1
297 # define HAVE_Sleep 1
301 #if defined(CLOCK_MONOTONIC) || defined(CLOCK_HIRES)
302 # define HAVE_CLOCKGETTIME 1
304 // FIXME improve this check, manpage hints to DST_NONE
305 # define HAVE_GETTIMEOFDAY 1
309 # define HAVE_SELECT 1
313 // FIXME improve this check
314 # define HAVE_USLEEP 1
317 // these are referenced elsewhere
318 cvar_t sys_usenoclockbutbenchmark = {CF_SHARED, "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."};
319 cvar_t sys_libdir = {CF_READONLY | CF_SHARED, "sys_libdir", "", "Default engine library directory"};
322 static cvar_t sys_debugsleep = {CF_SHARED, "sys_debugsleep", "0", "write requested and attained sleep times to standard output, to be used with gnuplot"};
323 static cvar_t sys_usesdlgetticks = {CF_SHARED, "sys_usesdlgetticks", "0", "use SDL_GetTicks() timer (less accurate, for debugging)"};
324 static cvar_t sys_usesdldelay = {CF_SHARED, "sys_usesdldelay", "0", "use SDL_Delay() (less accurate, for debugging)"};
325 #if HAVE_QUERYPERFORMANCECOUNTER
326 static cvar_t sys_usequeryperformancecounter = {CF_SHARED | CF_ARCHIVE, "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)"};
328 #if HAVE_CLOCKGETTIME
329 static cvar_t sys_useclockgettime = {CF_SHARED | CF_ARCHIVE, "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)"};
332 static cvar_t sys_stdout = {CF_SHARED, "sys_stdout", "1", "0: nothing is written to stdout (-nostdout cmdline option sets this), 1: normal messages are written to stdout, 2: normal messages are written to stderr (-stderr cmdline option sets this)"};
334 static cvar_t sys_stdout_blocks = {CF_SHARED, "sys_stdout_blocks", "0", "1: writes to stdout and stderr streams will block (causing a stutter or complete halt) if the buffer is full, ensuring no messages are lost at a price"};
337 static double benchmark_time; // actually always contains an integer amount of milliseconds, will eventually "overflow"
343 Returns the position (1 to argc-1) in the program's argument list
344 where the given parameter apears, or 0 if not present
347 int Sys_CheckParm (const char *parm)
351 for (i=1 ; i<sys.argc ; i++)
354 continue; // NEXTSTEP sometimes clears appkit vars.
355 if (!strcmp (parm,sys.argv[i]))
362 static void Sys_UpdateOutFD_c(cvar_t *var)
364 switch (sys_stdout.integer)
366 case 0: sys.outfd = -1; break;
368 case 1: sys.outfd = fileno(stdout); break;
369 case 2: sys.outfd = fileno(stderr); break;
373 void Sys_Init_Commands (void)
375 Cvar_RegisterVariable(&sys_debugsleep);
376 Cvar_RegisterVariable(&sys_usenoclockbutbenchmark);
377 Cvar_RegisterVariable(&sys_libdir);
378 #if HAVE_TIMEGETTIME || HAVE_QUERYPERFORMANCECOUNTER || HAVE_CLOCKGETTIME || HAVE_GETTIMEOFDAY
379 if(sys_supportsdlgetticks)
381 Cvar_RegisterVariable(&sys_usesdlgetticks);
382 Cvar_RegisterVariable(&sys_usesdldelay);
385 #if HAVE_QUERYPERFORMANCECOUNTER
386 Cvar_RegisterVariable(&sys_usequeryperformancecounter);
388 #if HAVE_CLOCKGETTIME
389 Cvar_RegisterVariable(&sys_useclockgettime);
391 Cvar_RegisterVariable(&sys_stdout);
392 Cvar_RegisterCallback(&sys_stdout, Sys_UpdateOutFD_c);
394 Cvar_RegisterVariable(&sys_stdout_blocks);
398 double Sys_DirtyTime(void)
400 // first all the OPTIONAL timers
402 // benchmark timer (fake clock)
403 if(sys_usenoclockbutbenchmark.integer)
405 double old_benchmark_time = benchmark_time;
407 if(benchmark_time == old_benchmark_time)
408 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
409 return benchmark_time * 0.000001;
411 #if HAVE_QUERYPERFORMANCECOUNTER
412 if (sys_usequeryperformancecounter.integer)
414 // LadyHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
415 // QueryPerformanceCounter
417 // Windows 95/98/ME/NT/2000/XP
419 // very accurate (CPU cycles)
421 // does not necessarily match realtime too well (tends to get faster and faster in win98)
422 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
424 LARGE_INTEGER PerformanceFreq;
425 LARGE_INTEGER PerformanceCount;
427 if (QueryPerformanceFrequency (&PerformanceFreq))
429 QueryPerformanceCounter (&PerformanceCount);
431 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
432 return ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
436 Con_Printf("No hardware timer available\n");
437 // fall back to other clock sources
438 Cvar_SetValueQuick(&sys_usequeryperformancecounter, false);
443 #if HAVE_CLOCKGETTIME
444 if (sys_useclockgettime.integer)
447 # ifdef CLOCK_MONOTONIC
449 clock_gettime(CLOCK_MONOTONIC, &ts);
452 clock_gettime(CLOCK_HIGHRES, &ts);
454 return (double) ts.tv_sec + ts.tv_nsec / 1000000000.0;
458 // now all the FALLBACK timers
459 if(sys_supportsdlgetticks && sys_usesdlgetticks.integer)
460 return (double) Sys_SDL_GetTicks() / 1000.0;
461 #if HAVE_GETTIMEOFDAY
464 gettimeofday(&tp, NULL);
465 return (double) tp.tv_sec + tp.tv_usec / 1000000.0;
467 #elif HAVE_TIMEGETTIME
469 static int firsttimegettime = true;
472 // Windows 95/98/ME/NT/2000/XP
474 // reasonable accuracy (millisecond)
476 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
478 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
479 if (firsttimegettime)
482 firsttimegettime = false;
485 return (double) timeGetTime() / 1000.0;
488 // fallback for using the SDL timer if no other timer is available
489 // this calls Sys_Error() if not linking against SDL
490 return (double) Sys_SDL_GetTicks() / 1000.0;
494 extern cvar_t host_maxwait;
495 double Sys_Sleep(double time)
498 uint32_t microseconds;
500 // convert to microseconds
503 if(host_maxwait.value <= 0)
504 time = min(time, 1000000.0);
506 time = min(time, host_maxwait.value * 1000.0);
508 if (time < 1 || host.restless)
509 return 0; // not sleeping this frame
511 microseconds = time; // post-validation to prevent overflow
513 if(sys_usenoclockbutbenchmark.integer)
515 double old_benchmark_time = benchmark_time;
516 benchmark_time += microseconds;
517 if(benchmark_time == old_benchmark_time)
518 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
522 if(sys_debugsleep.integer)
523 Con_Printf("sys_debugsleep: requesting %u ", microseconds);
524 dt = Sys_DirtyTime();
526 // less important on newer libcurl so no need to disturb dedicated servers
527 if (cls.state != ca_dedicated && Curl_Select(microseconds))
529 // a transfer is ready or we finished sleeping
531 else if(sys_supportsdlgetticks && sys_usesdldelay.integer)
532 Sys_SDL_Delay(microseconds / 1000);
542 if (cls.state == ca_dedicated && sv_checkforpacketsduringsleep.integer)
544 List_For_Each_Entry(s, &lhnet_socketlist.list, lhnetsocket_t, list)
546 if (s->address.addresstype == LHNETADDRESSTYPE_INET4 || s->address.addresstype == LHNETADDRESSTYPE_INET6)
548 if (lastfd < s->inetsocket)
549 lastfd = s->inetsocket;
550 #if defined(WIN32) && !defined(_MSC_VER)
551 FD_SET((int)s->inetsocket, &fdreadset);
553 FD_SET((unsigned int)s->inetsocket, &fdreadset);
558 tv.tv_sec = microseconds / 1000000;
559 tv.tv_usec = microseconds % 1000000;
560 // on Win32, select() cannot be used with all three FD list args being NULL according to MSDN
561 // (so much for POSIX...)
562 // bones_was_here: but a zeroed fd_set seems to be tolerated (tested on Win 7)
563 select(lastfd + 1, &fdreadset, NULL, NULL, &tv);
567 usleep(microseconds);
570 Sleep(microseconds / 1000);
573 Sys_SDL_Delay(microseconds / 1000);
576 dt = Sys_DirtyTime() - dt;
577 if(sys_debugsleep.integer)
578 Con_Printf(" got %u oversleep %d\n", (unsigned int)(dt * 1000000), (unsigned int)(dt * 1000000) - microseconds);
579 return (dt < 0 || dt >= 1800) ? 0 : dt;
584 ===============================================================================
588 ===============================================================================
591 void Sys_Print(const char *text)
594 if (developer.integer > 0)
596 __android_log_write(ANDROID_LOG_DEBUG, sys.argv[0], text);
602 // BUG: for some reason, NDELAY also affects stdout (1) when used on stdin (0).
603 // this is because both go to /dev/tty by default!
605 int origflags = fcntl(sys.outfd, F_GETFL, 0);
606 if (sys_stdout_blocks.integer)
607 fcntl(sys.outfd, F_SETFL, origflags & ~O_NONBLOCK);
613 fs_offset_t written = (fs_offset_t)write(sys.outfd, text, (int)strlen(text));
615 break; // sorry, I cannot do anything about this error - without an output
619 if (sys_stdout_blocks.integer)
620 fcntl(sys.outfd, F_SETFL, origflags);
623 //fprintf(stdout, "%s", text);
627 /// for the console to report failures inside Con_Printf()
628 void Sys_Printf(const char *fmt, ...)
631 char msg[MAX_INPUTLINE];
633 va_start(argptr,fmt);
634 dpvsnprintf(msg,sizeof(msg),fmt,argptr);
640 /// Reads a line from POSIX stdin or the Windows console
641 char *Sys_ConsoleInput(void)
643 static char text[MAX_INPUTLINE];
645 static unsigned int len = 0;
670 if (len < sizeof (text) - 1)
679 struct timeval timeout = { .tv_sec = 0, .tv_usec = 0 };
682 FD_SET(fileno(stdin), &fdset);
683 if (select(1, &fdset, NULL, NULL, &timeout) != -1 && FD_ISSET(fileno(stdin), &fdset))
684 return fgets(text, sizeof(text), stdin);
691 ===============================================================================
695 ===============================================================================
698 void Sys_Error (const char *error, ...)
701 char string[MAX_INPUTLINE];
703 // change stdin to non blocking
705 fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~O_NONBLOCK);
708 va_start (argptr,error);
709 dpvsnprintf (string, sizeof (string), error, argptr);
712 Con_Printf(CON_ERROR "Engine Error: %s\n", string);
714 // don't want a dead window left blocking the OS UI or the crash dialog
717 Sys_SDL_Dialog("Engine Error", string);
723 static const char *Sys_FindInPATH(const char *name, char namesep, const char *PATH, char pathsep, char *buf, size_t bufsize)
725 const char *p = PATH;
729 while((q = strchr(p, ':')))
731 dpsnprintf(buf, bufsize, "%.*s%c%s", (int)(q-p), p, namesep, name);
732 if(FS_SysFileExists(buf))
736 if(!q) // none found - try the last item
738 dpsnprintf(buf, bufsize, "%s%c%s", p, namesep, name);
739 if(FS_SysFileExists(buf))
747 static const char *Sys_FindExecutableName(void)
752 static char exenamebuf[MAX_OSPATH+1];
754 #if defined(__FreeBSD__)
755 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
756 size_t exenamebuflen = sizeof(exenamebuf)-1;
757 if (sysctl(mib, 4, exenamebuf, &exenamebuflen, NULL, 0) == 0)
761 #elif defined(__linux__)
762 n = readlink("/proc/self/exe", exenamebuf, sizeof(exenamebuf)-1);
764 if(n > 0 && (size_t)(n) < sizeof(exenamebuf))
769 if(strchr(sys.argv[0], '/'))
770 return sys.argv[0]; // possibly a relative path
772 return Sys_FindInPATH(sys.argv[0], '/', getenv("PATH"), ':', exenamebuf, sizeof(exenamebuf));
776 void Sys_ProvideSelfFD(void)
780 sys.selffd = FS_SysOpenFD(Sys_FindExecutableName(), "rb", false);
783 // for x86 cpus only... (x64 has SSE2_PRESENT)
784 #if defined(SSE_POSSIBLE) && !defined(SSE2_PRESENT)
785 // code from SDL, shortened as we can expect CPUID to work
786 static int CPUID_Features(void)
789 # if (defined(__GNUC__) || defined(__clang__) || defined(__TINYC__)) && defined(__i386__)
791 " movl %%ebx,%%edi\n"
792 " xorl %%eax,%%eax \n"
794 " cpuid # Get family/model/stepping/features\n"
796 " movl %%edi,%%ebx\n"
799 : "%eax", "%ecx", "%edx", "%edi"
801 # elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
805 cpuid ; Get family/model/stepping/features
809 # error SSE_POSSIBLE set but no CPUID implementation
816 qbool Sys_HaveSSE(void)
818 // COMMANDLINEOPTION: SSE: -nosse disables SSE support and detection
819 if(Sys_CheckParm("-nosse"))
824 // COMMANDLINEOPTION: SSE: -forcesse enables SSE support and disables detection
825 if(Sys_CheckParm("-forcesse") || Sys_CheckParm("-forcesse2"))
827 if(CPUID_Features() & (1 << 25))
833 qbool Sys_HaveSSE2(void)
835 // COMMANDLINEOPTION: SSE2: -nosse2 disables SSE2 support and detection
836 if(Sys_CheckParm("-nosse") || Sys_CheckParm("-nosse2"))
841 // COMMANDLINEOPTION: SSE2: -forcesse2 enables SSE2 support and disables detection
842 if(Sys_CheckParm("-forcesse2"))
844 if((CPUID_Features() & (3 << 25)) == (3 << 25)) // SSE is 1<<25, SSE2 is 1<<26
851 /// called to set process priority for dedicated servers
852 #if defined(__linux__)
853 #include <sys/resource.h>
856 void Sys_InitProcessNice (void)
859 sys.nicepossible = false;
860 if(Sys_CheckParm("-nonice"))
863 sys.nicelevel = getpriority(PRIO_PROCESS, 0);
866 Con_Printf("Kernel does not support reading process priority - cannot use niceness\n");
869 if(getrlimit(RLIMIT_NICE, &lim))
871 Con_Printf("Kernel does not support lowering nice level again - cannot use niceness\n");
874 if(lim.rlim_cur != RLIM_INFINITY && sys.nicelevel < (int) (20 - lim.rlim_cur))
876 Con_Printf("Current nice level is below the soft limit - cannot use niceness\n");
879 sys.nicepossible = true;
882 void Sys_MakeProcessNice (void)
884 if(!sys.nicepossible)
888 Con_DPrintf("Process is becoming 'nice'...\n");
889 if(setpriority(PRIO_PROCESS, 0, 19))
890 Con_Printf(CON_ERROR "Failed to raise nice level to %d\n", 19);
893 void Sys_MakeProcessMean (void)
895 if(!sys.nicepossible)
899 Con_DPrintf("Process is becoming 'mean'...\n");
900 if(setpriority(PRIO_PROCESS, 0, sys.nicelevel))
901 Con_Printf(CON_ERROR "Failed to lower nice level to %d\n", sys.nicelevel);
905 void Sys_InitProcessNice (void)
908 void Sys_MakeProcessNice (void)
911 void Sys_MakeProcessMean (void)
916 /** Halt and try not to catch fire.
917 * Writing to any file could corrupt it,
918 * any uneccessary code could crash while we crash.
919 * No malloc() (libgcc should be loaded already) or Con_Printf() allowed here.
921 static void Sys_HandleCrash(int sig)
923 #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
924 // Before doing anything else grab the stack frame addresses
925 #include <execinfo.h>
926 void *stackframes[32];
927 int framecount = backtrace(stackframes, 32);
930 // Windows doesn't have strsignal()
934 #ifndef WIN32 // or SIGBUS
935 case SIGBUS: sigdesc = "Bus error"; break;
937 case SIGILL: sigdesc = "Illegal instruction"; break;
938 case SIGABRT: sigdesc = "Aborted"; break;
939 case SIGFPE: sigdesc = "Floating point exception"; break;
940 case SIGSEGV: sigdesc = "Segmentation fault"; break;
941 default: sigdesc = "Yo dawg, we hit a bug while hitting a bug";
944 fprintf(stderr, "\n\n\e[1;37;41m Engine Crash: %s (%d) \e[m\n", sigdesc, sig);
945 #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
946 // the first two addresses will be in this function and in signal() in libc
947 backtrace_symbols_fd(stackframes + 2, framecount - 2, fileno(stderr));
949 fprintf(stderr, "\e[1m%s\e[m\n", engineversion);
951 // DP8 TODO: send a disconnect message indicating we crashed, see CL_DisconnectEx()
953 // don't want a dead window left blocking the OS UI or the crash dialog
957 Sys_SDL_Dialog("Engine Crash", sigdesc);
962 static void Sys_HandleSignal(int sig)
965 // Windows users will likely never see this so no point replicating strsignal()
966 Con_Printf("\nReceived signal %d, exiting...\n", sig);
968 Con_Printf("\nReceived %s signal (%d), exiting...\n", strsignal(sig), sig);
970 host.state = host_shutdown;
973 /// SDL2 only handles SIGINT and SIGTERM by default and doesn't log anything
974 static void Sys_InitSignals(void)
976 // Windows docs say its signal() only accepts these ones
977 signal(SIGABRT, Sys_HandleCrash);
978 signal(SIGFPE, Sys_HandleCrash);
979 signal(SIGILL, Sys_HandleCrash);
980 signal(SIGINT, Sys_HandleSignal);
981 signal(SIGSEGV, Sys_HandleCrash);
982 signal(SIGTERM, Sys_HandleSignal);
984 signal(SIGHUP, Sys_HandleSignal);
985 signal(SIGQUIT, Sys_HandleSignal);
986 signal(SIGBUS, Sys_HandleCrash);
987 signal(SIGPIPE, Sys_HandleSignal);
991 int main (int argc, char **argv)
994 sys.argv = (const char **)argv;
996 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
997 // COMMANDLINEOPTION: -noterminal disables console output on stdout
998 if(Sys_CheckParm("-noterminal") || Sys_CheckParm("-nostdout"))
999 sys_stdout.string = "0";
1000 // COMMANDLINEOPTION: -stderr moves console output to stderr
1001 else if(Sys_CheckParm("-stderr"))
1002 sys_stdout.string = "2";
1003 // too early for Cvar_SetQuick
1004 sys_stdout.value = sys_stdout.integer = atoi(sys_stdout.string);
1005 Sys_UpdateOutFD_c(&sys_stdout);
1007 fcntl(fileno(stdin), F_SETFL, fcntl(fileno(stdin), F_GETFL, 0) | O_NONBLOCK);
1008 // stdout/stderr will be set to blocking in Sys_Print() if so configured, or during a fatal error.
1009 fcntl(fileno(stdout), F_SETFL, fcntl(fileno(stdout), F_GETFL, 0) | O_NONBLOCK);
1010 fcntl(fileno(stderr), F_SETFL, fcntl(fileno(stderr), F_GETFL, 0) | O_NONBLOCK);
1014 Sys_ProvideSelfFD(); // may call Con_Printf() so must be after sys.outfd is set
1017 Sys_AllowProfiling(true);