/* * * Copyright (c) 1996-2002 Douglas E. Wegscheid. All rights reserved. * * Copyright (c) 2002-2010 Jarkko Hietaniemi. * All rights reserved. * * Copyright (C) 2011, 2012, 2013 Andrew Main (Zefram) * * This program is free software; you can redistribute it and/or modify * it under the same terms as Perl itself. */ #ifdef __cplusplus extern "C" { #endif #define PERL_NO_GET_CONTEXT #include "EXTERN.h" #include "perl.h" #include "XSUB.h" #include "ppport.h" #if defined(__CYGWIN__) && defined(HAS_W32API_WINDOWS_H) # include # define CYGWIN_WITH_W32API #endif #ifdef WIN32 # include #else # include #endif #ifdef HAS_SELECT # ifdef I_SYS_SELECT # include # endif #endif #if defined(TIME_HIRES_CLOCK_GETTIME_SYSCALL) || defined(TIME_HIRES_CLOCK_GETRES_SYSCALL) #include #endif #ifdef __cplusplus } #endif #define PERL_VERSION_DECIMAL(r,v,s) (r*1000000 + v*1000 + s) #define PERL_DECIMAL_VERSION \ PERL_VERSION_DECIMAL(PERL_REVISION,PERL_VERSION,PERL_SUBVERSION) #define PERL_VERSION_GE(r,v,s) \ (PERL_DECIMAL_VERSION >= PERL_VERSION_DECIMAL(r,v,s)) /* At least ppport.h 3.13 gets this wrong: one really cannot * have NVgf as anything else than "g" under Perl 5.6.x. */ #if PERL_REVISION == 5 && PERL_VERSION == 6 # undef NVgf # define NVgf "g" #endif #if PERL_VERSION_GE(5,7,3) && !PERL_VERSION_GE(5,10,1) # undef SAVEOP # define SAVEOP() SAVEVPTR(PL_op) #endif #define IV_1E6 1000000 #define IV_1E7 10000000 #define IV_1E9 1000000000 #define NV_1E6 1000000.0 #define NV_1E7 10000000.0 #define NV_1E9 1000000000.0 #ifndef PerlProc_pause # define PerlProc_pause() Pause() #endif #ifdef HAS_PAUSE # define Pause pause #else # undef Pause /* In case perl.h did it already. */ # define Pause() sleep(~0) /* Zzz for a long time. */ #endif /* Though the cpp define ITIMER_VIRTUAL is available the functionality * is not supported in Cygwin as of August 2004, ditto for Win32. * Neither are ITIMER_PROF or ITIMER_REALPROF implemented. --jhi */ #if defined(__CYGWIN__) || defined(WIN32) # undef ITIMER_VIRTUAL # undef ITIMER_PROF # undef ITIMER_REALPROF #endif #if defined(TIME_HIRES_CLOCK_GETTIME) && defined(_STRUCT_ITIMERSPEC) /* HP-UX has CLOCK_XXX values but as enums, not as defines. * The only way to detect these would be to test compile for each. */ # ifdef __hpux /* However, it seems that at least in HP-UX 11.31 ia64 there *are* * defines for these, so let's try detecting them. */ # ifndef CLOCK_REALTIME # define CLOCK_REALTIME CLOCK_REALTIME # define CLOCK_VIRTUAL CLOCK_VIRTUAL # define CLOCK_PROFILE CLOCK_PROFILE # endif # endif /* # ifdef __hpux */ #endif /* #if defined(TIME_HIRES_CLOCK_GETTIME) && defined(_STRUCT_ITIMERSPEC) */ #if defined(WIN32) || defined(CYGWIN_WITH_W32API) #ifndef HAS_GETTIMEOFDAY # define HAS_GETTIMEOFDAY #endif /* shows up in winsock.h? struct timeval { long tv_sec; long tv_usec; } */ typedef union { unsigned __int64 ft_i64; FILETIME ft_val; } FT_t; #define MY_CXT_KEY "Time::HiRes_" XS_VERSION typedef struct { unsigned long run_count; unsigned __int64 base_ticks; unsigned __int64 tick_frequency; FT_t base_systime_as_filetime; unsigned __int64 reset_time; } my_cxt_t; START_MY_CXT /* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */ #ifdef __GNUC__ # define Const64(x) x##LL #else # define Const64(x) x##i64 #endif #define EPOCH_BIAS Const64(116444736000000000) #ifdef Const64 # ifdef __GNUC__ # define IV_1E6LL 1000000LL /* Needed because of Const64() ##-appends LL (or i64). */ # define IV_1E7LL 10000000LL # define IV_1E9LL 1000000000LL # else # define IV_1E6i64 1000000i64 # define IV_1E7i64 10000000i64 # define IV_1E9i64 1000000000i64 # endif #endif /* NOTE: This does not compute the timezone info (doing so can be expensive, * and appears to be unsupported even by glibc) */ /* dMY_CXT needs a Perl context and we don't want to call PERL_GET_CONTEXT for performance reasons */ #undef gettimeofday #define gettimeofday(tp, not_used) _gettimeofday(aTHX_ tp, not_used) /* If the performance counter delta drifts more than 0.5 seconds from the * system time then we recalibrate to the system time. This means we may * move *backwards* in time! */ #define MAX_PERF_COUNTER_SKEW Const64(5000000) /* 0.5 seconds */ /* Reset reading from the performance counter every five minutes. * Many PC clocks just seem to be so bad. */ #define MAX_PERF_COUNTER_TICKS Const64(300000000) /* 300 seconds */ static int _gettimeofday(pTHX_ struct timeval *tp, void *not_used) { dMY_CXT; unsigned __int64 ticks; FT_t ft; if (MY_CXT.run_count++ == 0 || MY_CXT.base_systime_as_filetime.ft_i64 > MY_CXT.reset_time) { QueryPerformanceFrequency((LARGE_INTEGER*)&MY_CXT.tick_frequency); QueryPerformanceCounter((LARGE_INTEGER*)&MY_CXT.base_ticks); GetSystemTimeAsFileTime(&MY_CXT.base_systime_as_filetime.ft_val); ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64; MY_CXT.reset_time = ft.ft_i64 + MAX_PERF_COUNTER_TICKS; } else { __int64 diff; QueryPerformanceCounter((LARGE_INTEGER*)&ticks); ticks -= MY_CXT.base_ticks; ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64 + Const64(IV_1E7) * (ticks / MY_CXT.tick_frequency) +(Const64(IV_1E7) * (ticks % MY_CXT.tick_frequency)) / MY_CXT.tick_frequency; diff = ft.ft_i64 - MY_CXT.base_systime_as_filetime.ft_i64; if (diff < -MAX_PERF_COUNTER_SKEW || diff > MAX_PERF_COUNTER_SKEW) { MY_CXT.base_ticks += ticks; GetSystemTimeAsFileTime(&MY_CXT.base_systime_as_filetime.ft_val); ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64; } } /* seconds since epoch */ tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / Const64(IV_1E7)); /* microseconds remaining */ tp->tv_usec = (long)((ft.ft_i64 / Const64(10)) % Const64(IV_1E6)); return 0; } #endif #if defined(WIN32) && !defined(ATLEASTFIVEOHOHFIVE) static unsigned int sleep(unsigned int t) { Sleep(t*1000); return 0; } #endif #if !defined(HAS_GETTIMEOFDAY) && defined(VMS) #define HAS_GETTIMEOFDAY #include #include /* gettimeofday */ #include /* qdiv */ #include /* sys$gettim */ #include #ifdef __VAX #include /* lib$ediv() */ #endif /* VMS binary time is expressed in 100 nano-seconds since system base time which is 17-NOV-1858 00:00:00.00 */ #define DIV_100NS_TO_SECS 10000000L #define DIV_100NS_TO_USECS 10L /* gettimeofday is supposed to return times since the epoch so need to determine this in terms of VMS base time */ static $DESCRIPTOR(dscepoch,"01-JAN-1970 00:00:00.00"); #ifdef __VAX static long base_adjust[2]={0L,0L}; #else static __int64 base_adjust=0; #endif /* If we don't have gettimeofday, then likely we are on a VMS machine that operates on local time rather than UTC...so we have to zone-adjust. This code gleefully swiped from VMS.C */ /* method used to handle UTC conversions: * 1 == CRTL gmtime(); 2 == SYS$TIMEZONE_DIFFERENTIAL; 3 == no correction */ static int gmtime_emulation_type; /* number of secs to add to UTC POSIX-style time to get local time */ static long int utc_offset_secs; static struct dsc$descriptor_s fildevdsc = { 12, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$FILE_DEV" }; static struct dsc$descriptor_s *fildev[] = { &fildevdsc, NULL }; static time_t toutc_dst(time_t loc) { struct tm *rsltmp; if ((rsltmp = localtime(&loc)) == NULL) return -1; loc -= utc_offset_secs; if (rsltmp->tm_isdst) loc -= 3600; return loc; } static time_t toloc_dst(time_t utc) { struct tm *rsltmp; utc += utc_offset_secs; if ((rsltmp = localtime(&utc)) == NULL) return -1; if (rsltmp->tm_isdst) utc += 3600; return utc; } #define _toutc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \ ((gmtime_emulation_type || timezone_setup()), \ (gmtime_emulation_type == 1 ? toutc_dst(secs) : \ ((secs) - utc_offset_secs)))) #define _toloc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \ ((gmtime_emulation_type || timezone_setup()), \ (gmtime_emulation_type == 1 ? toloc_dst(secs) : \ ((secs) + utc_offset_secs)))) static int timezone_setup(void) { struct tm *tm_p; if (gmtime_emulation_type == 0) { int dstnow; time_t base = 15 * 86400; /* 15jan71; to avoid month/year ends between */ /* results of calls to gmtime() and localtime() */ /* for same &base */ gmtime_emulation_type++; if ((tm_p = gmtime(&base)) == NULL) { /* CRTL gmtime() is a fake */ char off[LNM$C_NAMLENGTH+1];; gmtime_emulation_type++; if (!Perl_vmstrnenv("SYS$TIMEZONE_DIFFERENTIAL",off,0,fildev,0)) { gmtime_emulation_type++; utc_offset_secs = 0; Perl_warn(aTHX_ "no UTC offset information; assuming local time is UTC"); } else { utc_offset_secs = atol(off); } } else { /* We've got a working gmtime() */ struct tm gmt, local; gmt = *tm_p; tm_p = localtime(&base); local = *tm_p; utc_offset_secs = (local.tm_mday - gmt.tm_mday) * 86400; utc_offset_secs += (local.tm_hour - gmt.tm_hour) * 3600; utc_offset_secs += (local.tm_min - gmt.tm_min) * 60; utc_offset_secs += (local.tm_sec - gmt.tm_sec); } } return 1; } int gettimeofday (struct timeval *tp, void *tpz) { long ret; #ifdef __VAX long quad[2]; long quad1[2]; long div_100ns_to_secs; long div_100ns_to_usecs; long quo,rem; long quo1,rem1; #else __int64 quad; __qdiv_t ans1,ans2; #endif /* In case of error, tv_usec = 0 and tv_sec = VMS condition code. The return from function is also set to -1. This is not exactly as per the manual page. */ tp->tv_usec = 0; #ifdef __VAX if (base_adjust[0]==0 && base_adjust[1]==0) { #else if (base_adjust==0) { /* Need to determine epoch adjustment */ #endif ret=sys$bintim(&dscepoch,&base_adjust); if (1 != (ret &&1)) { tp->tv_sec = ret; return -1; } } ret=sys$gettim(&quad); /* Get VMS system time */ if ((1 && ret) == 1) { #ifdef __VAX quad[0] -= base_adjust[0]; /* convert to epoch offset */ quad[1] -= base_adjust[1]; /* convert 2nd half of quadword */ div_100ns_to_secs = DIV_100NS_TO_SECS; div_100ns_to_usecs = DIV_100NS_TO_USECS; lib$ediv(&div_100ns_to_secs,&quad,&quo,&rem); quad1[0] = rem; quad1[1] = 0L; lib$ediv(&div_100ns_to_usecs,&quad1,&quo1,&rem1); tp->tv_sec = quo; /* Whole seconds */ tp->tv_usec = quo1; /* Micro-seconds */ #else quad -= base_adjust; /* convert to epoch offset */ ans1=qdiv(quad,DIV_100NS_TO_SECS); ans2=qdiv(ans1.rem,DIV_100NS_TO_USECS); tp->tv_sec = ans1.quot; /* Whole seconds */ tp->tv_usec = ans2.quot; /* Micro-seconds */ #endif } else { tp->tv_sec = ret; return -1; } # ifdef VMSISH_TIME # ifdef RTL_USES_UTC if (VMSISH_TIME) tp->tv_sec = _toloc(tp->tv_sec); # else if (!VMSISH_TIME) tp->tv_sec = _toutc(tp->tv_sec); # endif # endif return 0; } #endif /* Do not use H A S _ N A N O S L E E P * so that Perl Configure doesn't scan for it (and pull in -lrt and * the like which are not usually good ideas for the default Perl). * (We are part of the core perl now.) * The TIME_HIRES_NANOSLEEP is set by Makefile.PL. */ #if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP) #define HAS_USLEEP #define usleep hrt_usleep /* could conflict with ncurses for static build */ static void hrt_usleep(unsigned long usec) /* This is used to emulate usleep. */ { struct timespec res; res.tv_sec = usec / IV_1E6; res.tv_nsec = ( usec - res.tv_sec * IV_1E6 ) * 1000; nanosleep(&res, NULL); } #endif /* #if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP) */ #if !defined(HAS_USLEEP) && defined(HAS_SELECT) #ifndef SELECT_IS_BROKEN #define HAS_USLEEP #define usleep hrt_usleep /* could conflict with ncurses for static build */ static void hrt_usleep(unsigned long usec) { struct timeval tv; tv.tv_sec = 0; tv.tv_usec = usec; select(0, (Select_fd_set_t)NULL, (Select_fd_set_t)NULL, (Select_fd_set_t)NULL, &tv); } #endif #endif /* #if !defined(HAS_USLEEP) && defined(HAS_SELECT) */ #if !defined(HAS_USLEEP) && defined(WIN32) #define HAS_USLEEP #define usleep hrt_usleep /* could conflict with ncurses for static build */ static void hrt_usleep(unsigned long usec) { long msec; msec = usec / 1000; Sleep (msec); } #endif /* #if !defined(HAS_USLEEP) && defined(WIN32) */ #if !defined(HAS_USLEEP) && defined(HAS_POLL) #define HAS_USLEEP #define usleep hrt_usleep /* could conflict with ncurses for static build */ static void hrt_usleep(unsigned long usec) { int msec = usec / 1000; poll(0, 0, msec); } #endif /* #if !defined(HAS_USLEEP) && defined(HAS_POLL) */ #if defined(HAS_SETITIMER) && defined(ITIMER_REAL) static int hrt_ualarm_itimero(struct itimerval *oitv, int usec, int uinterval) { struct itimerval itv; itv.it_value.tv_sec = usec / IV_1E6; itv.it_value.tv_usec = usec % IV_1E6; itv.it_interval.tv_sec = uinterval / IV_1E6; itv.it_interval.tv_usec = uinterval % IV_1E6; return setitimer(ITIMER_REAL, &itv, oitv); } static int hrt_ualarm_itimer(int usec, int uinterval) { return hrt_ualarm_itimero(NULL, usec, uinterval); } #ifdef HAS_UALARM static int hrt_ualarm(int usec, int interval) /* for binary compat before 1.91 */ { return hrt_ualarm_itimer(usec, interval); } #endif /* #ifdef HAS_UALARM */ #endif /* #if !defined(HAS_UALARM) && defined(HAS_SETITIMER) */ #if !defined(HAS_UALARM) && defined(HAS_SETITIMER) #define HAS_UALARM #define ualarm hrt_ualarm_itimer /* could conflict with ncurses for static build */ #endif #if !defined(HAS_UALARM) && defined(VMS) #define HAS_UALARM #define ualarm vms_ualarm #include #include #include #include #include #include #include #define VMSERR(s) (!((s)&1)) static void us_to_VMS(useconds_t mseconds, unsigned long v[]) { int iss; unsigned long qq[2]; qq[0] = mseconds; qq[1] = 0; v[0] = v[1] = 0; iss = lib$addx(qq,qq,qq); if (VMSERR(iss)) lib$signal(iss); iss = lib$subx(v,qq,v); if (VMSERR(iss)) lib$signal(iss); iss = lib$addx(qq,qq,qq); if (VMSERR(iss)) lib$signal(iss); iss = lib$subx(v,qq,v); if (VMSERR(iss)) lib$signal(iss); iss = lib$subx(v,qq,v); if (VMSERR(iss)) lib$signal(iss); } static int VMS_to_us(unsigned long v[]) { int iss; unsigned long div=10,quot, rem; iss = lib$ediv(&div,v,",&rem); if (VMSERR(iss)) lib$signal(iss); return quot; } typedef unsigned short word; typedef struct _ualarm { int function; int repeat; unsigned long delay[2]; unsigned long interval[2]; unsigned long remain[2]; } Alarm; static int alarm_ef; static Alarm *a0, alarm_base; #define UAL_NULL 0 #define UAL_SET 1 #define UAL_CLEAR 2 #define UAL_ACTIVE 4 static void ualarm_AST(Alarm *a); static int vms_ualarm(int mseconds, int interval) { Alarm *a, abase; struct item_list3 { word length; word code; void *bufaddr; void *retlenaddr; } ; static struct item_list3 itmlst[2]; static int first = 1; unsigned long asten; int iss, enabled; if (first) { first = 0; itmlst[0].code = JPI$_ASTEN; itmlst[0].length = sizeof(asten); itmlst[0].retlenaddr = NULL; itmlst[1].code = 0; itmlst[1].length = 0; itmlst[1].bufaddr = NULL; itmlst[1].retlenaddr = NULL; iss = lib$get_ef(&alarm_ef); if (VMSERR(iss)) lib$signal(iss); a0 = &alarm_base; a0->function = UAL_NULL; } itmlst[0].bufaddr = &asten; iss = sys$getjpiw(0,0,0,itmlst,0,0,0); if (VMSERR(iss)) lib$signal(iss); if (!(asten&0x08)) return -1; a = &abase; if (mseconds) { a->function = UAL_SET; } else { a->function = UAL_CLEAR; } us_to_VMS(mseconds, a->delay); if (interval) { us_to_VMS(interval, a->interval); a->repeat = 1; } else a->repeat = 0; iss = sys$clref(alarm_ef); if (VMSERR(iss)) lib$signal(iss); iss = sys$dclast(ualarm_AST,a,0); if (VMSERR(iss)) lib$signal(iss); iss = sys$waitfr(alarm_ef); if (VMSERR(iss)) lib$signal(iss); if (a->function == UAL_ACTIVE) return VMS_to_us(a->remain); else return 0; } static void ualarm_AST(Alarm *a) { int iss; unsigned long now[2]; iss = sys$gettim(now); if (VMSERR(iss)) lib$signal(iss); if (a->function == UAL_SET || a->function == UAL_CLEAR) { if (a0->function == UAL_ACTIVE) { iss = sys$cantim(a0,PSL$C_USER); if (VMSERR(iss)) lib$signal(iss); iss = lib$subx(a0->remain, now, a->remain); if (VMSERR(iss)) lib$signal(iss); if (a->remain[1] & 0x80000000) a->remain[0] = a->remain[1] = 0; } if (a->function == UAL_SET) { a->function = a0->function; a0->function = UAL_ACTIVE; a0->repeat = a->repeat; if (a0->repeat) { a0->interval[0] = a->interval[0]; a0->interval[1] = a->interval[1]; } a0->delay[0] = a->delay[0]; a0->delay[1] = a->delay[1]; iss = lib$subx(now, a0->delay, a0->remain); if (VMSERR(iss)) lib$signal(iss); iss = sys$setimr(0,a0->delay,ualarm_AST,a0); if (VMSERR(iss)) lib$signal(iss); } else { a->function = a0->function; a0->function = UAL_NULL; } iss = sys$setef(alarm_ef); if (VMSERR(iss)) lib$signal(iss); } else if (a->function == UAL_ACTIVE) { if (a->repeat) { iss = lib$subx(now, a->interval, a->remain); if (VMSERR(iss)) lib$signal(iss); iss = sys$setimr(0,a->interval,ualarm_AST,a); if (VMSERR(iss)) lib$signal(iss); } else { a->function = UAL_NULL; } iss = sys$wake(0,0); if (VMSERR(iss)) lib$signal(iss); lib$signal(SS$_ASTFLT); } else { lib$signal(SS$_BADPARAM); } } #endif /* #if !defined(HAS_UALARM) && defined(VMS) */ #ifdef HAS_GETTIMEOFDAY static int myU2time(pTHX_ UV *ret) { struct timeval Tp; int status; status = gettimeofday (&Tp, NULL); ret[0] = Tp.tv_sec; ret[1] = Tp.tv_usec; return status; } static NV myNVtime() { #ifdef WIN32 dTHX; #endif struct timeval Tp; int status; status = gettimeofday (&Tp, NULL); return status == 0 ? Tp.tv_sec + (Tp.tv_usec / NV_1E6) : -1.0; } #endif /* #ifdef HAS_GETTIMEOFDAY */ static void hrstatns(UV *atime_nsec, UV *mtime_nsec, UV *ctime_nsec) { dTHX; #if TIME_HIRES_STAT == 1 *atime_nsec = PL_statcache.st_atimespec.tv_nsec; *mtime_nsec = PL_statcache.st_mtimespec.tv_nsec; *ctime_nsec = PL_statcache.st_ctimespec.tv_nsec; #elif TIME_HIRES_STAT == 2 *atime_nsec = PL_statcache.st_atimensec; *mtime_nsec = PL_statcache.st_mtimensec; *ctime_nsec = PL_statcache.st_ctimensec; #elif TIME_HIRES_STAT == 3 *atime_nsec = PL_statcache.st_atime_n; *mtime_nsec = PL_statcache.st_mtime_n; *ctime_nsec = PL_statcache.st_ctime_n; #elif TIME_HIRES_STAT == 4 *atime_nsec = PL_statcache.st_atim.tv_nsec; *mtime_nsec = PL_statcache.st_mtim.tv_nsec; *ctime_nsec = PL_statcache.st_ctim.tv_nsec; #elif TIME_HIRES_STAT == 5 *atime_nsec = PL_statcache.st_uatime * 1000; *mtime_nsec = PL_statcache.st_umtime * 1000; *ctime_nsec = PL_statcache.st_uctime * 1000; #else /* !TIME_HIRES_STAT */ *atime_nsec = 0; *mtime_nsec = 0; *ctime_nsec = 0; #endif /* !TIME_HIRES_STAT */ } /* Until Apple implements clock_gettime() (ditto clock_getres()) * we will emulate it using Mach interfaces. */ #if defined(PERL_DARWIN) && !defined(CLOCK_REALTIME) # include # define CLOCK_REALTIME 0x01 # define CLOCK_MONOTONIC 0x02 # define TIMER_ABSTIME 0x01 #ifdef USE_ITHREADS STATIC perl_mutex darwin_time_mutex; #endif static uint64_t absolute_time_init; static mach_timebase_info_data_t timebase_info; static struct timespec timespec_init; static int darwin_time_init() { #ifdef USE_ITHREAD PERL_MUTEX_LOCK(&darwin_time_mutex); #endif struct timeval tv; int success = 1; if (absolute_time_init == 0) { /* mach_absolute_time() cannot fail */ absolute_time_init = mach_absolute_time(); success = mach_timebase_info(&timebase_info) == KERN_SUCCESS; if (success) { success = gettimeofday(&tv, NULL) == 0; if (success) { timespec_init.tv_sec = tv.tv_sec; timespec_init.tv_nsec = tv.tv_usec * 1000; } } } #ifdef USE_ITHREAD PERL_MUTEX_UNLOCK(&darwin_time_mutex); #endif return success; } static int clock_gettime(int clock_id, struct timespec *ts) { if (darwin_time_init() && timebase_info.denom) { switch (clock_id) { case CLOCK_REALTIME: { uint64_t nanos = ((mach_absolute_time() - absolute_time_init) * (uint64_t)timebase_info.numer) / (uint64_t)timebase_info.denom; ts->tv_sec = timespec_init.tv_sec + nanos / IV_1E9; ts->tv_nsec = timespec_init.tv_nsec + nanos % IV_1E9; return 0; } case CLOCK_MONOTONIC: { uint64_t nanos = (mach_absolute_time() * (uint64_t)timebase_info.numer) / (uint64_t)timebase_info.denom; ts->tv_sec = nanos / IV_1E9; ts->tv_nsec = nanos - ts->tv_sec * IV_1E9; return 0; } default: break; } } SETERRNO(EINVAL, LIB_INVARG); return -1; } static int clock_getres(int clock_id, struct timespec *ts) { if (darwin_time_init() && timebase_info.denom) { switch (clock_id) { case CLOCK_REALTIME: case CLOCK_MONOTONIC: ts->tv_sec = 0; /* In newer kernels both the numer and denom are one, * resulting in conversion factor of one, which is of * course unrealistic. */ ts->tv_nsec = timebase_info.numer / timebase_info.denom; return 0; default: break; } } SETERRNO(EINVAL, LIB_INVARG); return -1; } static int clock_nanosleep(int clock_id, int flags, const struct timespec *rqtp, struct timespec *rmtp) { if (darwin_time_init()) { switch (clock_id) { case CLOCK_REALTIME: case CLOCK_MONOTONIC: { uint64_t nanos = rqtp->tv_sec * IV_1E9 + rqtp->tv_nsec; int success; if ((flags & TIMER_ABSTIME)) { uint64_t back = timespec_init.tv_sec * IV_1E9 + timespec_init.tv_nsec; nanos = nanos > back ? nanos - back : 0; } success = mach_wait_until(mach_absolute_time() + nanos) == KERN_SUCCESS; /* In the relative sleep, the rmtp should be filled in with * the 'unused' part of the rqtp in case the sleep gets * interrupted by a signal. But it is unknown how signals * interact with mach_wait_until(). In the absolute sleep, * the rmtp should stay untouched. */ rmtp->tv_sec = 0; rmtp->tv_nsec = 0; return success; } default: break; } } SETERRNO(EINVAL, LIB_INVARG); return -1; } #endif /* PERL_DARWIN */ #include "const-c.inc" #if (defined(TIME_HIRES_NANOSLEEP)) || \ (defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME)) static NV nsec_without_unslept(struct timespec *sleepfor, const struct timespec *unslept) { sleepfor->tv_sec -= unslept->tv_sec; sleepfor->tv_nsec -= unslept->tv_nsec; if (sleepfor->tv_nsec < 0) { sleepfor->tv_sec--; sleepfor->tv_nsec += IV_1E9; } return ((NV)sleepfor->tv_sec) * NV_1E9 + ((NV)sleepfor->tv_nsec); } #endif MODULE = Time::HiRes PACKAGE = Time::HiRes PROTOTYPES: ENABLE BOOT: { #ifdef MY_CXT_KEY MY_CXT_INIT; #endif #ifdef ATLEASTFIVEOHOHFIVE # ifdef HAS_GETTIMEOFDAY { (void) hv_store(PL_modglobal, "Time::NVtime", 12, newSViv(PTR2IV(myNVtime)), 0); (void) hv_store(PL_modglobal, "Time::U2time", 12, newSViv(PTR2IV(myU2time)), 0); } # endif #endif } #if defined(USE_ITHREADS) && defined(MY_CXT_KEY) void CLONE(...) CODE: MY_CXT_CLONE; #endif INCLUDE: const-xs.inc #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY) NV usleep(useconds) NV useconds PREINIT: struct timeval Ta, Tb; CODE: gettimeofday(&Ta, NULL); if (items > 0) { if (useconds >= NV_1E6) { IV seconds = (IV) (useconds / NV_1E6); /* If usleep() has been implemented using setitimer() * then this contortion is unnecessary-- but usleep() * may be implemented in some other way, so let's contort. */ if (seconds) { sleep(seconds); useconds -= NV_1E6 * seconds; } } else if (useconds < 0.0) croak("Time::HiRes::usleep(%"NVgf"): negative time not invented yet", useconds); usleep((U32)useconds); } else PerlProc_pause(); gettimeofday(&Tb, NULL); #if 0 printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec); #endif RETVAL = NV_1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec); OUTPUT: RETVAL #if defined(TIME_HIRES_NANOSLEEP) NV nanosleep(nsec) NV nsec PREINIT: struct timespec sleepfor, unslept; CODE: if (nsec < 0.0) croak("Time::HiRes::nanosleep(%"NVgf"): negative time not invented yet", nsec); sleepfor.tv_sec = (Time_t)(nsec / NV_1E9); sleepfor.tv_nsec = (long)(nsec - ((NV)sleepfor.tv_sec) * NV_1E9); unslept.tv_sec = 0; unslept.tv_nsec = 0; if (nanosleep(&sleepfor, &unslept) == 0) { RETVAL = nsec; } else { RETVAL = nsec_without_unslept(&sleepfor, &unslept); } OUTPUT: RETVAL #else /* #if defined(TIME_HIRES_NANOSLEEP) */ NV nanosleep(nsec) NV nsec CODE: PERL_UNUSED_ARG(nsec); croak("Time::HiRes::nanosleep(): unimplemented in this platform"); RETVAL = 0.0; OUTPUT: RETVAL #endif /* #if defined(TIME_HIRES_NANOSLEEP) */ NV sleep(...) PREINIT: struct timeval Ta, Tb; CODE: gettimeofday(&Ta, NULL); if (items > 0) { NV seconds = SvNV(ST(0)); if (seconds >= 0.0) { UV useconds = (UV)(1E6 * (seconds - (UV)seconds)); if (seconds >= 1.0) sleep((U32)seconds); if ((IV)useconds < 0) { #if defined(__sparc64__) && defined(__GNUC__) /* Sparc64 gcc 2.95.3 (e.g. on NetBSD) has a bug * where (0.5 - (UV)(0.5)) will under certain * circumstances (if the double is cast to UV more * than once?) evaluate to -0.5, instead of 0.5. */ useconds = -(IV)useconds; #endif /* #if defined(__sparc64__) && defined(__GNUC__) */ if ((IV)useconds < 0) croak("Time::HiRes::sleep(%"NVgf"): internal error: useconds < 0 (unsigned %"UVuf" signed %"IVdf")", seconds, useconds, (IV)useconds); } usleep(useconds); } else croak("Time::HiRes::sleep(%"NVgf"): negative time not invented yet", seconds); } else PerlProc_pause(); gettimeofday(&Tb, NULL); #if 0 printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec); #endif RETVAL = (NV)(Tb.tv_sec-Ta.tv_sec)+0.000001*(NV)(Tb.tv_usec-Ta.tv_usec); OUTPUT: RETVAL #else /* #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY) */ NV usleep(useconds) NV useconds CODE: PERL_UNUSED_ARG(useconds); croak("Time::HiRes::usleep(): unimplemented in this platform"); RETVAL = 0.0; OUTPUT: RETVAL #endif /* #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY) */ #ifdef HAS_UALARM IV ualarm(useconds,uinterval=0) int useconds int uinterval CODE: if (useconds < 0 || uinterval < 0) croak("Time::HiRes::ualarm(%d, %d): negative time not invented yet", useconds, uinterval); #if defined(HAS_SETITIMER) && defined(ITIMER_REAL) { struct itimerval itv; if (hrt_ualarm_itimero(&itv, useconds, uinterval)) { /* To conform to ualarm's interface, we're actually ignoring an error here. */ RETVAL = 0; } else { RETVAL = itv.it_value.tv_sec * IV_1E6 + itv.it_value.tv_usec; } } #else if (useconds >= IV_1E6 || uinterval >= IV_1E6) croak("Time::HiRes::ualarm(%d, %d): useconds or uinterval equal to or more than %"IVdf, useconds, uinterval, IV_1E6); RETVAL = ualarm(useconds, uinterval); #endif OUTPUT: RETVAL NV alarm(seconds,interval=0) NV seconds NV interval CODE: if (seconds < 0.0 || interval < 0.0) croak("Time::HiRes::alarm(%"NVgf", %"NVgf"): negative time not invented yet", seconds, interval); { IV iseconds = (IV)seconds; IV iinterval = (IV)interval; NV fseconds = seconds - iseconds; NV finterval = interval - iinterval; IV useconds, uinterval; if (fseconds >= 1.0 || finterval >= 1.0) croak("Time::HiRes::alarm(%"NVgf", %"NVgf"): seconds or interval too large to split correctly", seconds, interval); useconds = IV_1E6 * fseconds; uinterval = IV_1E6 * finterval; #if defined(HAS_SETITIMER) && defined(ITIMER_REAL) { struct itimerval nitv, oitv; nitv.it_value.tv_sec = iseconds; nitv.it_value.tv_usec = useconds; nitv.it_interval.tv_sec = iinterval; nitv.it_interval.tv_usec = uinterval; if (setitimer(ITIMER_REAL, &nitv, &oitv)) { /* To conform to alarm's interface, we're actually ignoring an error here. */ RETVAL = 0; } else { RETVAL = oitv.it_value.tv_sec + ((NV)oitv.it_value.tv_usec) / NV_1E6; } } #else if (iseconds || iinterval) croak("Time::HiRes::alarm(%"NVgf", %"NVgf"): seconds or interval equal to or more than 1.0 ", seconds, interval); RETVAL = (NV)ualarm( useconds, uinterval ) / NV_1E6; #endif } OUTPUT: RETVAL #else int ualarm(useconds,interval=0) int useconds int interval CODE: PERL_UNUSED_ARG(useconds); PERL_UNUSED_ARG(interval); croak("Time::HiRes::ualarm(): unimplemented in this platform"); RETVAL = -1; OUTPUT: RETVAL NV alarm(seconds,interval=0) NV seconds NV interval CODE: PERL_UNUSED_ARG(seconds); PERL_UNUSED_ARG(interval); croak("Time::HiRes::alarm(): unimplemented in this platform"); RETVAL = 0.0; OUTPUT: RETVAL #endif /* #ifdef HAS_UALARM */ #ifdef HAS_GETTIMEOFDAY # ifdef MACOS_TRADITIONAL /* fix epoch TZ and use unsigned time_t */ void gettimeofday() PREINIT: struct timeval Tp; struct timezone Tz; PPCODE: int status; status = gettimeofday (&Tp, &Tz); if (status == 0) { Tp.tv_sec += Tz.tz_minuteswest * 60; /* adjust for TZ */ if (GIMME == G_ARRAY) { EXTEND(sp, 2); /* Mac OS (Classic) has unsigned time_t */ PUSHs(sv_2mortal(newSVuv(Tp.tv_sec))); PUSHs(sv_2mortal(newSViv(Tp.tv_usec))); } else { EXTEND(sp, 1); PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / NV_1E6)))); } } NV time() PREINIT: struct timeval Tp; struct timezone Tz; CODE: int status; status = gettimeofday (&Tp, &Tz); if (status == 0) { Tp.tv_sec += Tz.tz_minuteswest * 60; /* adjust for TZ */ RETVAL = Tp.tv_sec + (Tp.tv_usec / NV_1E6); } else { RETVAL = -1.0; } OUTPUT: RETVAL # else /* MACOS_TRADITIONAL */ void gettimeofday() PREINIT: struct timeval Tp; PPCODE: int status; status = gettimeofday (&Tp, NULL); if (status == 0) { if (GIMME == G_ARRAY) { EXTEND(sp, 2); PUSHs(sv_2mortal(newSViv(Tp.tv_sec))); PUSHs(sv_2mortal(newSViv(Tp.tv_usec))); } else { EXTEND(sp, 1); PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / NV_1E6)))); } } NV time() PREINIT: struct timeval Tp; CODE: int status; status = gettimeofday (&Tp, NULL); if (status == 0) { RETVAL = Tp.tv_sec + (Tp.tv_usec / NV_1E6); } else { RETVAL = -1.0; } OUTPUT: RETVAL # endif /* MACOS_TRADITIONAL */ #endif /* #ifdef HAS_GETTIMEOFDAY */ #if defined(HAS_GETITIMER) && defined(HAS_SETITIMER) #define TV2NV(tv) ((NV)((tv).tv_sec) + 0.000001 * (NV)((tv).tv_usec)) void setitimer(which, seconds, interval = 0) int which NV seconds NV interval PREINIT: struct itimerval newit; struct itimerval oldit; PPCODE: if (seconds < 0.0 || interval < 0.0) croak("Time::HiRes::setitimer(%"IVdf", %"NVgf", %"NVgf"): negative time not invented yet", (IV)which, seconds, interval); newit.it_value.tv_sec = (IV)seconds; newit.it_value.tv_usec = (IV)((seconds - (NV)newit.it_value.tv_sec) * NV_1E6); newit.it_interval.tv_sec = (IV)interval; newit.it_interval.tv_usec = (IV)((interval - (NV)newit.it_interval.tv_sec) * NV_1E6); /* on some platforms the 1st arg to setitimer is an enum, which * causes -Wc++-compat to complain about passing an int instead */ #ifdef GCC_DIAG_IGNORE GCC_DIAG_IGNORE(-Wc++-compat); #endif if (setitimer(which, &newit, &oldit) == 0) { EXTEND(sp, 1); PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_value)))); if (GIMME == G_ARRAY) { EXTEND(sp, 1); PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_interval)))); } } #ifdef GCC_DIAG_RESTORE GCC_DIAG_RESTORE; #endif void getitimer(which) int which PREINIT: struct itimerval nowit; PPCODE: /* on some platforms the 1st arg to getitimer is an enum, which * causes -Wc++-compat to complain about passing an int instead */ #ifdef GCC_DIAG_IGNORE GCC_DIAG_IGNORE(-Wc++-compat); #endif if (getitimer(which, &nowit) == 0) { EXTEND(sp, 1); PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_value)))); if (GIMME == G_ARRAY) { EXTEND(sp, 1); PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_interval)))); } } #ifdef GCC_DIAG_RESTORE GCC_DIAG_RESTORE; #endif #endif /* #if defined(HAS_GETITIMER) && defined(HAS_SETITIMER) */ #if defined(TIME_HIRES_CLOCK_GETTIME) NV clock_gettime(clock_id = CLOCK_REALTIME) int clock_id PREINIT: struct timespec ts; int status = -1; CODE: #ifdef TIME_HIRES_CLOCK_GETTIME_SYSCALL status = syscall(SYS_clock_gettime, clock_id, &ts); #else status = clock_gettime(clock_id, &ts); #endif RETVAL = status == 0 ? ts.tv_sec + (NV) ts.tv_nsec / NV_1E9 : -1; OUTPUT: RETVAL #else /* if defined(TIME_HIRES_CLOCK_GETTIME) */ NV clock_gettime(clock_id = 0) int clock_id CODE: PERL_UNUSED_ARG(clock_id); croak("Time::HiRes::clock_gettime(): unimplemented in this platform"); RETVAL = 0.0; OUTPUT: RETVAL #endif /* #if defined(TIME_HIRES_CLOCK_GETTIME) */ #if defined(TIME_HIRES_CLOCK_GETRES) NV clock_getres(clock_id = CLOCK_REALTIME) int clock_id PREINIT: int status = -1; struct timespec ts; CODE: #ifdef TIME_HIRES_CLOCK_GETRES_SYSCALL status = syscall(SYS_clock_getres, clock_id, &ts); #else status = clock_getres(clock_id, &ts); #endif RETVAL = status == 0 ? ts.tv_sec + (NV) ts.tv_nsec / NV_1E9 : -1; OUTPUT: RETVAL #else /* if defined(TIME_HIRES_CLOCK_GETRES) */ NV clock_getres(clock_id = 0) int clock_id CODE: PERL_UNUSED_ARG(clock_id); croak("Time::HiRes::clock_getres(): unimplemented in this platform"); RETVAL = 0.0; OUTPUT: RETVAL #endif /* #if defined(TIME_HIRES_CLOCK_GETRES) */ #if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME) NV clock_nanosleep(clock_id, nsec, flags = 0) int clock_id NV nsec int flags PREINIT: struct timespec sleepfor, unslept; CODE: if (nsec < 0.0) croak("Time::HiRes::clock_nanosleep(..., %"NVgf"): negative time not invented yet", nsec); sleepfor.tv_sec = (Time_t)(nsec / NV_1E9); sleepfor.tv_nsec = (long)(nsec - ((NV)sleepfor.tv_sec) * NV_1E9); unslept.tv_sec = 0; unslept.tv_nsec = 0; if (clock_nanosleep(clock_id, flags, &sleepfor, &unslept) == 0) { RETVAL = nsec; } else { RETVAL = nsec_without_unslept(&sleepfor, &unslept); } OUTPUT: RETVAL #else /* if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME) */ NV clock_nanosleep(clock_id, nsec, flags = 0) int clock_id NV nsec int flags CODE: PERL_UNUSED_ARG(clock_id); PERL_UNUSED_ARG(nsec); PERL_UNUSED_ARG(flags); croak("Time::HiRes::clock_nanosleep(): unimplemented in this platform"); RETVAL = 0.0; OUTPUT: RETVAL #endif /* #if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME) */ #if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC) NV clock() PREINIT: clock_t clocks; CODE: clocks = clock(); RETVAL = clocks == (clock_t) -1 ? (clock_t) -1 : (NV)clocks / (NV)CLOCKS_PER_SEC; OUTPUT: RETVAL #else /* if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC) */ NV clock() CODE: croak("Time::HiRes::clock(): unimplemented in this platform"); RETVAL = 0.0; OUTPUT: RETVAL #endif /* #if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC) */ void stat(...) PROTOTYPE: ;$ PREINIT: OP fakeop; int nret; ALIAS: Time::HiRes::lstat = 1 PPCODE: XPUSHs(sv_2mortal(newSVsv(items == 1 ? ST(0) : DEFSV))); PUTBACK; ENTER; PL_laststatval = -1; SAVEOP(); Zero(&fakeop, 1, OP); fakeop.op_type = ix ? OP_LSTAT : OP_STAT; fakeop.op_ppaddr = PL_ppaddr[fakeop.op_type]; fakeop.op_flags = GIMME_V == G_ARRAY ? OPf_WANT_LIST : GIMME_V == G_SCALAR ? OPf_WANT_SCALAR : OPf_WANT_VOID; PL_op = &fakeop; (void)fakeop.op_ppaddr(aTHX); SPAGAIN; LEAVE; nret = SP+1 - &ST(0); if (nret == 13) { UV atime = SvUV(ST( 8)); UV mtime = SvUV(ST( 9)); UV ctime = SvUV(ST(10)); UV atime_nsec; UV mtime_nsec; UV ctime_nsec; hrstatns(&atime_nsec, &mtime_nsec, &ctime_nsec); if (atime_nsec) ST( 8) = sv_2mortal(newSVnv(atime + (NV) atime_nsec / NV_1E9)); if (mtime_nsec) ST( 9) = sv_2mortal(newSVnv(mtime + (NV) mtime_nsec / NV_1E9)); if (ctime_nsec) ST(10) = sv_2mortal(newSVnv(ctime + (NV) ctime_nsec / NV_1E9)); } XSRETURN(nret);