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"
42 // Microsoft's compiler complains about portable code
43 #pragma warning(disable : 4996)
48 static char sys_timestring[128];
49 char *Sys_TimeString(const char *timeformat)
51 time_t mytime = time(NULL);
54 localtime_s(&mytm, &mytime);
55 strftime(sys_timestring, sizeof(sys_timestring), timeformat, &mytm);
57 strftime(sys_timestring, sizeof(sys_timestring), timeformat, localtime(&mytime));
59 return sys_timestring;
63 void Sys_Quit (int returnvalue)
65 // Unlock mutexes because the quit command may jump directly here, causing a deadlock
66 if ((cmd_local)->cbuf->lock)
67 Cbuf_Unlock((cmd_local)->cbuf);
68 SV_UnlockThreadMutex();
69 TaskQueue_Frame(true);
71 if (Sys_CheckParm("-profilegameonly"))
72 Sys_AllowProfiling(false);
73 host.state = host_shutdown;
77 Sys_AllowProfiling(false);
81 fcntl(fileno(stdout), F_SETFL, fcntl(fileno(stdout), F_GETFL, 0) & ~O_NONBLOCK);
82 fcntl(fileno(stderr), F_SETFL, fcntl(fileno(stderr), F_GETFL, 0) & ~O_NONBLOCK);
93 void Sys_AllowProfiling(qbool enable)
97 extern void monstartup(const char *libname);
98 extern void moncleanup(void);
100 monstartup("libmain.so");
104 #elif (defined(__linux__) && (defined(__GLIBC__) || defined(__GNU_LIBRARY__))) || defined(__FreeBSD__)
105 extern int moncontrol(int);
112 ===============================================================================
116 ===============================================================================
119 static qbool Sys_LoadDependencyFunctions(dllhandle_t dllhandle, const dllfunction_t *fcts, qbool complain, qbool has_next)
121 const dllfunction_t *func;
124 for (func = fcts; func && func->name != NULL; func++)
125 if (!(*func->funcvariable = (void *) Sys_GetProcAddress (dllhandle, func->name)))
129 Con_DPrintf (" - missing function \"%s\" - broken library!", func->name);
131 Con_DPrintf("\nContinuing with");
138 for (func = fcts; func && func->name != NULL; func++)
139 *func->funcvariable = NULL;
144 qbool Sys_LoadSelf(dllhandle_t *handle)
146 dllhandle_t dllhandle = 0;
151 dllhandle = LoadLibrary (NULL);
153 dllhandle = dlopen (NULL, RTLD_NOW | RTLD_GLOBAL);
159 qbool Sys_LoadDependency (const char** dllnames, dllhandle_t* handle, const dllfunction_t *fcts)
162 const dllfunction_t *func;
163 dllhandle_t dllhandle = 0;
170 #ifdef PREFER_PRELOAD
171 dllhandle = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL);
172 if(Sys_LoadDependencyFunctions(dllhandle, fcts, false, false))
174 Con_DPrintf ("All of %s's functions were already linked in! Not loading dynamically...\n", dllnames[0]);
179 Sys_FreeLibrary(&dllhandle);
185 for (func = fcts; func && func->name != NULL; func++)
186 *func->funcvariable = NULL;
188 // Try every possible name
189 Con_DPrintf ("Trying to load library...");
190 for (i = 0; dllnames[i] != NULL; i++)
192 Con_DPrintf (" \"%s\"", dllnames[i]);
194 # ifndef DONT_USE_SETDLLDIRECTORY
196 SetDllDirectory("bin64");
198 SetDllDirectory("bin32");
202 if(Sys_LoadLibrary(dllnames[i], &dllhandle))
204 if (Sys_LoadDependencyFunctions(dllhandle, fcts, true, (dllnames[i+1] != NULL) || (strrchr(sys.argv[0], '/'))))
207 Sys_FreeLibrary (&dllhandle);
211 // see if the names can be loaded relative to the executable path
212 // (this is for Mac OSX which does not check next to the executable)
213 if (!dllhandle && strrchr(sys.argv[0], '/'))
215 char path[MAX_OSPATH];
216 dp_strlcpy(path, sys.argv[0], sizeof(path));
217 strrchr(path, '/')[1] = 0;
218 for (i = 0; dllnames[i] != NULL; i++)
220 char temp[MAX_OSPATH];
221 dp_strlcpy(temp, path, sizeof(temp));
222 dp_strlcat(temp, dllnames[i], sizeof(temp));
223 Con_DPrintf (" \"%s\"", temp);
225 if(Sys_LoadLibrary(temp, &dllhandle))
227 if (Sys_LoadDependencyFunctions(dllhandle, fcts, true, (dllnames[i+1] != NULL) || (strrchr(sys.argv[0], '/'))))
230 Sys_FreeLibrary (&dllhandle);
238 Con_DPrintf(" - failed.\n");
242 Con_DPrintf(" - loaded.\n");
243 Con_Printf("Loaded library \"%s\"\n", dllnames[i]);
252 qbool Sys_LoadLibrary(const char *name, dllhandle_t *handle)
254 dllhandle_t dllhandle = 0;
261 dllhandle = LoadLibrary (name);
263 dllhandle = dlopen (name, RTLD_LAZY | RTLD_GLOBAL);
273 void Sys_FreeLibrary (dllhandle_t* handle)
276 if (handle == NULL || *handle == NULL)
280 FreeLibrary (*handle);
289 void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
293 return (void *)GetProcAddress (handle, name);
295 return (void *)dlsym (handle, name);
303 # define HAVE_TIMEGETTIME 1
304 # define HAVE_QUERYPERFORMANCECOUNTER 1
305 # define HAVE_Sleep 1
309 #if defined(CLOCK_MONOTONIC) || defined(CLOCK_HIRES)
310 # define HAVE_CLOCKGETTIME 1
312 // FIXME improve this check, manpage hints to DST_NONE
313 # define HAVE_GETTIMEOFDAY 1
317 # define HAVE_SELECT 1
321 // FIXME improve this check
322 # define HAVE_USLEEP 1
325 // these are referenced elsewhere
326 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."};
327 cvar_t sys_libdir = {CF_READONLY | CF_SHARED, "sys_libdir", "", "Default engine library directory"};
330 static cvar_t sys_debugsleep = {CF_SHARED, "sys_debugsleep", "0", "write requested and attained sleep times to standard output, to be used with gnuplot"};
331 static cvar_t sys_usesdlgetticks = {CF_SHARED, "sys_usesdlgetticks", "0", "use SDL_GetTicks() timer (less accurate, for debugging)"};
332 static cvar_t sys_usesdldelay = {CF_SHARED, "sys_usesdldelay", "0", "use SDL_Delay() (less accurate, for debugging)"};
333 #if HAVE_QUERYPERFORMANCECOUNTER
334 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)"};
336 #if HAVE_CLOCKGETTIME
337 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)"};
340 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)"};
342 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"};
345 static double benchmark_time; // actually always contains an integer amount of milliseconds, will eventually "overflow"
351 Returns the position (1 to argc-1) in the program's argument list
352 where the given parameter apears, or 0 if not present
355 int Sys_CheckParm (const char *parm)
359 for (i=1 ; i<sys.argc ; i++)
362 continue; // NEXTSTEP sometimes clears appkit vars.
363 if (!strcmp (parm,sys.argv[i]))
370 static void Sys_UpdateOutFD_c(cvar_t *var)
372 switch (sys_stdout.integer)
374 case 0: sys.outfd = -1; break;
376 case 1: sys.outfd = fileno(stdout); break;
377 case 2: sys.outfd = fileno(stderr); break;
381 void Sys_Init_Commands (void)
383 Cvar_RegisterVariable(&sys_debugsleep);
384 Cvar_RegisterVariable(&sys_usenoclockbutbenchmark);
385 Cvar_RegisterVariable(&sys_libdir);
386 #if HAVE_TIMEGETTIME || HAVE_QUERYPERFORMANCECOUNTER || HAVE_CLOCKGETTIME || HAVE_GETTIMEOFDAY
387 if(sys_supportsdlgetticks)
389 Cvar_RegisterVariable(&sys_usesdlgetticks);
390 Cvar_RegisterVariable(&sys_usesdldelay);
393 #if HAVE_QUERYPERFORMANCECOUNTER
394 Cvar_RegisterVariable(&sys_usequeryperformancecounter);
396 #if HAVE_CLOCKGETTIME
397 Cvar_RegisterVariable(&sys_useclockgettime);
399 Cvar_RegisterVariable(&sys_stdout);
400 Cvar_RegisterCallback(&sys_stdout, Sys_UpdateOutFD_c);
402 Cvar_RegisterVariable(&sys_stdout_blocks);
406 double Sys_DirtyTime(void)
408 // first all the OPTIONAL timers
410 // benchmark timer (fake clock)
411 if(sys_usenoclockbutbenchmark.integer)
413 double old_benchmark_time = benchmark_time;
415 if(benchmark_time == old_benchmark_time)
416 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
417 return benchmark_time * 0.000001;
419 #if HAVE_QUERYPERFORMANCECOUNTER
420 if (sys_usequeryperformancecounter.integer)
422 // LadyHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
423 // QueryPerformanceCounter
425 // Windows 95/98/ME/NT/2000/XP
427 // very accurate (CPU cycles)
429 // does not necessarily match realtime too well (tends to get faster and faster in win98)
430 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
432 LARGE_INTEGER PerformanceFreq;
433 LARGE_INTEGER PerformanceCount;
435 if (QueryPerformanceFrequency (&PerformanceFreq))
437 QueryPerformanceCounter (&PerformanceCount);
439 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
440 return ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
444 Con_Printf("No hardware timer available\n");
445 // fall back to other clock sources
446 Cvar_SetValueQuick(&sys_usequeryperformancecounter, false);
451 #if HAVE_CLOCKGETTIME
452 if (sys_useclockgettime.integer)
455 # ifdef CLOCK_MONOTONIC
457 clock_gettime(CLOCK_MONOTONIC, &ts);
460 clock_gettime(CLOCK_HIGHRES, &ts);
462 return (double) ts.tv_sec + ts.tv_nsec / 1000000000.0;
466 // now all the FALLBACK timers
467 if(sys_supportsdlgetticks && sys_usesdlgetticks.integer)
468 return (double) Sys_SDL_GetTicks() / 1000.0;
469 #if HAVE_GETTIMEOFDAY
472 gettimeofday(&tp, NULL);
473 return (double) tp.tv_sec + tp.tv_usec / 1000000.0;
475 #elif HAVE_TIMEGETTIME
477 static int firsttimegettime = true;
480 // Windows 95/98/ME/NT/2000/XP
482 // reasonable accuracy (millisecond)
484 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
486 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
487 if (firsttimegettime)
490 firsttimegettime = false;
493 return (double) timeGetTime() / 1000.0;
496 // fallback for using the SDL timer if no other timer is available
497 // this calls Sys_Error() if not linking against SDL
498 return (double) Sys_SDL_GetTicks() / 1000.0;
502 extern cvar_t host_maxwait;
503 double Sys_Sleep(double time)
506 uint32_t microseconds;
508 // convert to microseconds
511 if(host_maxwait.value <= 0)
512 time = min(time, 1000000.0);
514 time = min(time, host_maxwait.value * 1000.0);
516 if (time < 1 || host.restless)
517 return 0; // not sleeping this frame
519 microseconds = time; // post-validation to prevent overflow
521 if(sys_usenoclockbutbenchmark.integer)
523 double old_benchmark_time = benchmark_time;
524 benchmark_time += microseconds;
525 if(benchmark_time == old_benchmark_time)
526 Sys_Error("sys_usenoclockbutbenchmark cannot run any longer, sorry");
530 if(sys_debugsleep.integer)
531 Con_Printf("sys_debugsleep: requesting %u ", microseconds);
532 dt = Sys_DirtyTime();
534 // less important on newer libcurl so no need to disturb dedicated servers
535 if (cls.state != ca_dedicated && Curl_Select(microseconds))
537 // a transfer is ready or we finished sleeping
539 else if(sys_supportsdlgetticks && sys_usesdldelay.integer)
540 Sys_SDL_Delay(microseconds / 1000);
550 if (cls.state == ca_dedicated && sv_checkforpacketsduringsleep.integer)
552 List_For_Each_Entry(s, &lhnet_socketlist.list, lhnetsocket_t, list)
554 if (s->address.addresstype == LHNETADDRESSTYPE_INET4 || s->address.addresstype == LHNETADDRESSTYPE_INET6)
556 if (lastfd < s->inetsocket)
557 lastfd = s->inetsocket;
558 #if defined(WIN32) && !defined(_MSC_VER)
559 FD_SET((int)s->inetsocket, &fdreadset);
561 FD_SET((unsigned int)s->inetsocket, &fdreadset);
566 tv.tv_sec = microseconds / 1000000;
567 tv.tv_usec = microseconds % 1000000;
568 // on Win32, select() cannot be used with all three FD list args being NULL according to MSDN
569 // (so much for POSIX...)
570 // bones_was_here: but a zeroed fd_set seems to be tolerated (tested on Win 7)
571 select(lastfd + 1, &fdreadset, NULL, NULL, &tv);
575 usleep(microseconds);
578 Sleep(microseconds / 1000);
581 Sys_SDL_Delay(microseconds / 1000);
584 dt = Sys_DirtyTime() - dt;
585 if(sys_debugsleep.integer)
586 Con_Printf(" got %u oversleep %d\n", (unsigned int)(dt * 1000000), (unsigned int)(dt * 1000000) - microseconds);
587 return (dt < 0 || dt >= 1800) ? 0 : dt;
592 ===============================================================================
596 ===============================================================================
599 void Sys_Print(const char *text)
602 if (developer.integer > 0)
604 __android_log_write(ANDROID_LOG_DEBUG, sys.argv[0], text);
610 // BUG: for some reason, NDELAY also affects stdout (1) when used on stdin (0).
611 // this is because both go to /dev/tty by default!
613 int origflags = fcntl(sys.outfd, F_GETFL, 0);
614 if (sys_stdout_blocks.integer)
615 fcntl(sys.outfd, F_SETFL, origflags & ~O_NONBLOCK);
621 fs_offset_t written = (fs_offset_t)write(sys.outfd, text, (int)strlen(text));
623 break; // sorry, I cannot do anything about this error - without an output
627 if (sys_stdout_blocks.integer)
628 fcntl(sys.outfd, F_SETFL, origflags);
631 //fprintf(stdout, "%s", text);
635 /// for the console to report failures inside Con_Printf()
636 void Sys_Printf(const char *fmt, ...)
639 char msg[MAX_INPUTLINE];
641 va_start(argptr,fmt);
642 dpvsnprintf(msg,sizeof(msg),fmt,argptr);
648 /// Reads a line from POSIX stdin or the Windows console
649 char *Sys_ConsoleInput(void)
651 static char text[MAX_INPUTLINE];
653 static unsigned int len = 0;
678 if (len < sizeof (text) - 1)
687 struct timeval timeout = { .tv_sec = 0, .tv_usec = 0 };
690 FD_SET(fileno(stdin), &fdset);
691 if (select(1, &fdset, NULL, NULL, &timeout) != -1 && FD_ISSET(fileno(stdin), &fdset))
692 return fgets(text, sizeof(text), stdin);
699 ===============================================================================
703 ===============================================================================
706 void Sys_Error (const char *error, ...)
709 char string[MAX_INPUTLINE];
711 // set output to blocking stderr
712 sys.outfd = fileno(stderr);
714 fcntl(sys.outfd, F_SETFL, fcntl(sys.outfd, F_GETFL, 0) & ~O_NONBLOCK);
717 va_start (argptr,error);
718 dpvsnprintf (string, sizeof (string), error, argptr);
721 Con_Printf(CON_ERROR "Engine Error: %s\n", string);
723 // don't want a dead window left blocking the OS UI or the crash dialog
726 Sys_SDL_Dialog("Engine Error", string);
734 static const char *Sys_FindInPATH(const char *name, char namesep, const char *PATH, char pathsep, char *buf, size_t bufsize)
736 const char *p = PATH;
740 while((q = strchr(p, ':')))
742 dpsnprintf(buf, bufsize, "%.*s%c%s", (int)(q-p), p, namesep, name);
743 if(FS_SysFileExists(buf))
747 if(!q) // none found - try the last item
749 dpsnprintf(buf, bufsize, "%s%c%s", p, namesep, name);
750 if(FS_SysFileExists(buf))
758 static const char *Sys_FindExecutableName(void)
763 static char exenamebuf[MAX_OSPATH+1];
765 #if defined(__FreeBSD__)
766 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
767 size_t exenamebuflen = sizeof(exenamebuf)-1;
768 if (sysctl(mib, 4, exenamebuf, &exenamebuflen, NULL, 0) == 0)
772 #elif defined(__linux__)
773 n = readlink("/proc/self/exe", exenamebuf, sizeof(exenamebuf)-1);
775 if(n > 0 && (size_t)(n) < sizeof(exenamebuf))
780 if(strchr(sys.argv[0], '/'))
781 return sys.argv[0]; // possibly a relative path
783 return Sys_FindInPATH(sys.argv[0], '/', getenv("PATH"), ':', exenamebuf, sizeof(exenamebuf));
787 void Sys_ProvideSelfFD(void)
791 sys.selffd = FS_SysOpenFD(Sys_FindExecutableName(), "rb", false);
794 // for x86 cpus only... (x64 has SSE2_PRESENT)
795 #if defined(SSE_POSSIBLE) && !defined(SSE2_PRESENT)
796 // code from SDL, shortened as we can expect CPUID to work
797 static int CPUID_Features(void)
800 # if (defined(__GNUC__) || defined(__clang__) || defined(__TINYC__)) && defined(__i386__)
802 " movl %%ebx,%%edi\n"
803 " xorl %%eax,%%eax \n"
805 " cpuid # Get family/model/stepping/features\n"
807 " movl %%edi,%%ebx\n"
810 : "%eax", "%ecx", "%edx", "%edi"
812 # elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
816 cpuid ; Get family/model/stepping/features
820 # error SSE_POSSIBLE set but no CPUID implementation
827 qbool Sys_HaveSSE(void)
829 // COMMANDLINEOPTION: SSE: -nosse disables SSE support and detection
830 if(Sys_CheckParm("-nosse"))
835 // COMMANDLINEOPTION: SSE: -forcesse enables SSE support and disables detection
836 if(Sys_CheckParm("-forcesse") || Sys_CheckParm("-forcesse2"))
838 if(CPUID_Features() & (1 << 25))
844 qbool Sys_HaveSSE2(void)
846 // COMMANDLINEOPTION: SSE2: -nosse2 disables SSE2 support and detection
847 if(Sys_CheckParm("-nosse") || Sys_CheckParm("-nosse2"))
852 // COMMANDLINEOPTION: SSE2: -forcesse2 enables SSE2 support and disables detection
853 if(Sys_CheckParm("-forcesse2"))
855 if((CPUID_Features() & (3 << 25)) == (3 << 25)) // SSE is 1<<25, SSE2 is 1<<26
862 /// called to set process priority for dedicated servers
863 #if defined(__linux__)
864 #include <sys/resource.h>
867 void Sys_InitProcessNice (void)
870 sys.nicepossible = false;
871 if(Sys_CheckParm("-nonice"))
874 sys.nicelevel = getpriority(PRIO_PROCESS, 0);
877 Con_Printf("Kernel does not support reading process priority - cannot use niceness\n");
880 if(getrlimit(RLIMIT_NICE, &lim))
882 Con_Printf("Kernel does not support lowering nice level again - cannot use niceness\n");
885 if(lim.rlim_cur != RLIM_INFINITY && sys.nicelevel < (int) (20 - lim.rlim_cur))
887 Con_Printf("Current nice level is below the soft limit - cannot use niceness\n");
890 sys.nicepossible = true;
893 void Sys_MakeProcessNice (void)
895 if(!sys.nicepossible)
899 Con_DPrintf("Process is becoming 'nice'...\n");
900 if(setpriority(PRIO_PROCESS, 0, 19))
901 Con_Printf(CON_ERROR "Failed to raise nice level to %d\n", 19);
904 void Sys_MakeProcessMean (void)
906 if(!sys.nicepossible)
910 Con_DPrintf("Process is becoming 'mean'...\n");
911 if(setpriority(PRIO_PROCESS, 0, sys.nicelevel))
912 Con_Printf(CON_ERROR "Failed to lower nice level to %d\n", sys.nicelevel);
916 void Sys_InitProcessNice (void)
919 void Sys_MakeProcessNice (void)
922 void Sys_MakeProcessMean (void)
927 /** Halt and try not to catch fire.
928 * Writing to any file could corrupt it,
929 * any uneccessary code could crash while we crash.
930 * No malloc() (libgcc should be loaded already) or Con_Printf() allowed here.
932 static void Sys_HandleCrash(int sig)
934 #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
935 // Before doing anything else grab the stack frame addresses
936 #include <execinfo.h>
937 void *stackframes[32];
938 int framecount = backtrace(stackframes, 32);
941 // Windows doesn't have strsignal()
945 #ifndef WIN32 // or SIGBUS
946 case SIGBUS: sigdesc = "Bus error"; break;
948 case SIGILL: sigdesc = "Illegal instruction"; break;
949 case SIGABRT: sigdesc = "Aborted"; break;
950 case SIGFPE: sigdesc = "Floating point exception"; break;
951 case SIGSEGV: sigdesc = "Segmentation fault"; break;
952 default: sigdesc = "Yo dawg, we hit a bug while hitting a bug";
955 // set output to blocking stderr
956 sys.outfd = fileno(stderr);
958 fcntl(sys.outfd, F_SETFL, fcntl(sys.outfd, F_GETFL, 0) & ~O_NONBLOCK);
961 fprintf(stderr, "\n\n\e[1;37;41m Engine Crash: %s (%d) \e[m\n", sigdesc, sig);
962 #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
963 // the first two addresses will be in this function and in signal() in libc
964 backtrace_symbols_fd(stackframes + 2, framecount - 2, sys.outfd);
966 fprintf(stderr, "\e[1m%s\e[m\n", engineversion);
968 // DP8 TODO: send a disconnect message indicating we crashed, see CL_DisconnectEx()
970 // don't want a dead window left blocking the OS UI or the crash dialog
974 Sys_SDL_Dialog("Engine Crash", sigdesc);
981 static void Sys_HandleSignal(int sig)
984 // Windows users will likely never see this so no point replicating strsignal()
985 Con_Printf("\nReceived signal %d, exiting...\n", sig);
987 Con_Printf("\nReceived %s signal (%d), exiting...\n", strsignal(sig), sig);
989 host.state = host_shutdown;
992 /// SDL2 only handles SIGINT and SIGTERM by default and doesn't log anything
993 static void Sys_InitSignals(void)
995 // Windows docs say its signal() only accepts these ones
996 signal(SIGABRT, Sys_HandleCrash);
997 signal(SIGFPE, Sys_HandleCrash);
998 signal(SIGILL, Sys_HandleCrash);
999 signal(SIGINT, Sys_HandleSignal);
1000 signal(SIGSEGV, Sys_HandleCrash);
1001 signal(SIGTERM, Sys_HandleSignal);
1003 signal(SIGHUP, Sys_HandleSignal);
1004 signal(SIGQUIT, Sys_HandleSignal);
1005 signal(SIGBUS, Sys_HandleCrash);
1006 signal(SIGPIPE, Sys_HandleSignal);
1010 int main (int argc, char **argv)
1013 sys.argv = (const char **)argv;
1015 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
1016 // COMMANDLINEOPTION: -noterminal disables console output on stdout
1017 if(Sys_CheckParm("-noterminal") || Sys_CheckParm("-nostdout"))
1018 sys_stdout.string = "0";
1019 // COMMANDLINEOPTION: -stderr moves console output to stderr
1020 else if(Sys_CheckParm("-stderr"))
1021 sys_stdout.string = "2";
1022 // too early for Cvar_SetQuick
1023 sys_stdout.value = sys_stdout.integer = atoi(sys_stdout.string);
1024 Sys_UpdateOutFD_c(&sys_stdout);
1026 fcntl(fileno(stdin), F_SETFL, fcntl(fileno(stdin), F_GETFL, 0) | O_NONBLOCK);
1027 // stdout/stderr will be set to blocking in Sys_Print() if so configured, or during a fatal error.
1028 fcntl(fileno(stdout), F_SETFL, fcntl(fileno(stdout), F_GETFL, 0) | O_NONBLOCK);
1029 fcntl(fileno(stderr), F_SETFL, fcntl(fileno(stderr), F_GETFL, 0) | O_NONBLOCK);
1033 Sys_ProvideSelfFD(); // may call Con_Printf() so must be after sys.outfd is set
1036 Sys_AllowProfiling(true);