[p5sagit/p5-mst-13.2.git] / ext / Time / HiRes / HiRes.xs

#ifdef __cplusplus
extern "C" {
#endif
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#ifdef WIN32
#include <time.h>
#else
#include <sys/time.h>
#endif
#ifdef __cplusplus
}
#endif

static IV
constant(char *name, int arg)
{
    errno = 0;
    switch (*name) {
    case 'I':
      if (strEQ(name, "ITIMER_REAL"))
#ifdef ITIMER_REAL
	return ITIMER_REAL;
#else
	goto not_there;
#endif
      if (strEQ(name, "ITIMER_REALPROF"))
#ifdef ITIMER_REALPROF
	return ITIMER_REALPROF;
#else
	goto not_there;
#endif
      if (strEQ(name, "ITIMER_VIRTUAL"))
#ifdef ITIMER_VIRTUAL
	return ITIMER_VIRTUAL;
#else
	goto not_there;
#endif
      if (strEQ(name, "ITIMER_PROF"))
#ifdef ITIMER_PROF
	return ITIMER_PROF;
#else
	goto not_there;
#endif
      break;
    }
    errno = EINVAL;
    return 0;

not_there:
    errno = ENOENT;
    return 0;
}

#if !defined(HAS_GETTIMEOFDAY) && defined(WIN32)
#define HAS_GETTIMEOFDAY

/* shows up in winsock.h?
struct timeval {
 long tv_sec;
 long tv_usec;
}
*/

typedef union {
    unsigned __int64	ft_i64;
    FILETIME		ft_val;
} FT_t;

/* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */
#define EPOCH_BIAS  116444736000000000i64

/* NOTE: This does not compute the timezone info (doing so can be expensive,
 * and appears to be unsupported even by glibc) */
int
gettimeofday (struct timeval *tp, void *not_used)
{
    FT_t ft;

    /* this returns time in 100-nanosecond units  (i.e. tens of usecs) */
    GetSystemTimeAsFileTime(&ft.ft_val);

    /* seconds since epoch */
    tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / 10000000i64);

    /* microseconds remaining */
    tp->tv_usec = (long)((ft.ft_i64 / 10i64) % 1000000i64);

    return 0;
}
#endif

#if !defined(HAS_GETTIMEOFDAY) && defined(VMS)
#define HAS_GETTIMEOFDAY

#include <lnmdef.h>
#include <time.h> /* gettimeofday */
#include <stdlib.h> /* qdiv */
#include <starlet.h> /* sys$gettim */
#include <descrip.h>
#ifdef __VAX
#include <lib$routines.h> /* 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

#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 */

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(WIN32)
#define HAS_USLEEP
#define usleep hrt_usleep  /* could conflict with ncurses for static build */

void
hrt_usleep(unsigned long usec)
{
    long msec;
    msec = usec / 1000;
    Sleep (msec);
}
#endif


#if !defined(HAS_UALARM) && defined(HAS_SETITIMER)
#define HAS_UALARM
#define ualarm hrt_ualarm  /* could conflict with ncurses for static build */

int
hrt_ualarm(int usec, int interval)
{
   struct itimerval itv;
   itv.it_value.tv_sec = usec / 1000000;
   itv.it_value.tv_usec = usec % 1000000;
   itv.it_interval.tv_sec = interval / 1000000;
   itv.it_interval.tv_usec = interval % 1000000;
   return setitimer(ITIMER_REAL, &itv, 0);
}
#endif

#if !defined(HAS_UALARM) && defined(VMS)
#define HAS_UALARM
#define ualarm vms_ualarm 

#include <lib$routines.h>
#include <ssdef.h>
#include <starlet.h>
#include <descrip.h>
#include <signal.h>
#include <jpidef.h>
#include <psldef.h>

#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$ediv(&div,v,&quot,&rem);
    if (VMSERR(iss)) lib$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 /* !HAS_UALARM && VMS */


#ifdef HAS_GETTIMEOFDAY

static int
myU2time(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()
{
  struct timeval Tp;
  int status;
  status = gettimeofday (&Tp, NULL);
  return status == 0 ? Tp.tv_sec + (Tp.tv_usec / 1000000.) : -1.0;
}

#endif

MODULE = Time::HiRes            PACKAGE = Time::HiRes

PROTOTYPES: ENABLE

BOOT:
#ifdef HAS_GETTIMEOFDAY
{
  UV auv[2];
  hv_store(PL_modglobal, "Time::NVtime", 12, newSViv((IV) myNVtime()), 0);
  if (myU2time(auv) == 0)
    hv_store(PL_modglobal, "Time::U2time", 12, newSViv((IV) auv[0]), 0);
}
#endif

IV
constant(name, arg)
	char *		name
	int		arg

#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 > 1E6) {
		IV seconds = (IV) (useconds / 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 -= 1E6 * seconds;
		}
	    } else if (useconds < 0.0)
	        croak("Time::HiRes::usleep(%"NVgf"): negative time not invented yet", useconds);
	    usleep((UV)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 = 1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec);

	OUTPUT:
	RETVAL

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 = 1E6 * (seconds - (UV)seconds);
		 sleep((UV)seconds);
		 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

#endif

#ifdef HAS_UALARM

int
ualarm(useconds,interval=0)
	int useconds
	int interval
	CODE:
	if (useconds < 0 || interval < 0)
	    croak("Time::HiRes::ualarm(%d, %d): negative time not invented yet", useconds, interval);
	RETVAL = ualarm(useconds, interval);

	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);
	RETVAL = (NV)ualarm(seconds  * 1000000,
			    interval * 1000000) / 1E6;

	OUTPUT:
	RETVAL

#endif

#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);
        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 / 1000000.0))));
        }

NV
time()
        PREINIT:
        struct timeval Tp;
        struct timezone Tz;
        CODE:
        int status;
        status = gettimeofday (&Tp, &Tz);
        Tp.tv_sec += Tz.tz_minuteswest * 60;	/* adjust for TZ */
        RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.0);
	OUTPUT:
	RETVAL

#    else	/* MACOS_TRADITIONAL */
void
gettimeofday()
        PREINIT:
        struct timeval Tp;
        PPCODE:
	int status;
        status = gettimeofday (&Tp, NULL);
        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 / 1000000.0))));
        }

NV
time()
        PREINIT:
        struct timeval Tp;
        CODE:
	int status;
        status = gettimeofday (&Tp, NULL);
        RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.);
	OUTPUT:
	RETVAL

#    endif	/* MACOS_TRADITIONAL */
#endif

#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", which, seconds, interval);
	newit.it_value.tv_sec  = seconds;
	newit.it_value.tv_usec =
	  (seconds  - (NV)newit.it_value.tv_sec)    * 1000000.0;
	newit.it_interval.tv_sec  = interval;
	newit.it_interval.tv_usec =
	  (interval - (NV)newit.it_interval.tv_sec) * 1000000.0;
	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))));
	  }
	}

void
getitimer(which)
	int which
    PREINIT:
	struct itimerval nowit;
    PPCODE:
	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))));
	  }
	}

#endif

# $Id: HiRes.xs,v 1.11 1999/03/16 02:27:38 wegscd Exp wegscd $

# $Log: HiRes.xs,v $
# Revision 1.11  1999/03/16 02:27:38  wegscd
# Add U2time, NVtime. Fix symbols for static link.
#
# Revision 1.10  1998/09/30 02:36:25  wegscd
# Add VMS changes.
#
# Revision 1.9  1998/07/07 02:42:06  wegscd
# Win32 usleep()
#
# Revision 1.8  1998/07/02 01:47:26  wegscd
# Add Win32 code for gettimeofday.
#
# Revision 1.7  1997/11/13 02:08:12  wegscd
# Add missing EXTEND in gettimeofday() scalar code.
#
# Revision 1.6  1997/11/11 02:32:35  wegscd
# Do something useful when calling gettimeofday() in a scalar context.
# The patch is courtesy of Gisle Aas.
#
# Revision 1.5  1997/11/06 03:10:47  wegscd
# Fake ualarm() if we have setitimer.
#
# Revision 1.4  1997/11/05 05:41:23  wegscd
# Turn prototypes ON (suggested by Gisle Aas)
#
# Revision 1.3  1997/10/13 20:56:15  wegscd
# Add PROTOTYPES: DISABLE
#
# Revision 1.2  1997/05/23 01:01:38  wegscd
# Conditional compilation, depending on what the OS gives us.
#
# Revision 1.1  1996/09/03 18:26:35  wegscd
# Initial revision
#
#
Commit	Line	Data
dcf686c9	1	#ifdef __cplusplus
	2	extern "C" {
	3	#endif
	4	#include "EXTERN.h"
	5	#include "perl.h"
	6	#include "XSUB.h"
	7	#ifdef WIN32
	8	#include <time.h>
	9	#else
	10	#include <sys/time.h>
	11	#endif
	12	#ifdef __cplusplus
	13	}
	14	#endif
	15
3c72ec00	16	static IV
	17	constant(char *name, int arg)
	18	{
	19	errno = 0;
	20	switch (*name) {
	21	case 'I':
	22	if (strEQ(name, "ITIMER_REAL"))
	23	#ifdef ITIMER_REAL
	24	return ITIMER_REAL;
	25	#else
	26	goto not_there;
	27	#endif
	28	if (strEQ(name, "ITIMER_REALPROF"))
	29	#ifdef ITIMER_REALPROF
	30	return ITIMER_REALPROF;
	31	#else
	32	goto not_there;
	33	#endif
	34	if (strEQ(name, "ITIMER_VIRTUAL"))
	35	#ifdef ITIMER_VIRTUAL
	36	return ITIMER_VIRTUAL;
	37	#else
	38	goto not_there;
	39	#endif
	40	if (strEQ(name, "ITIMER_PROF"))
	41	#ifdef ITIMER_PROF
	42	return ITIMER_PROF;
	43	#else
	44	goto not_there;
	45	#endif
	46	break;
	47	}
	48	errno = EINVAL;
	49	return 0;
	50
	51	not_there:
	52	errno = ENOENT;
	53	return 0;
	54	}
	55
dcf686c9	56	#if !defined(HAS_GETTIMEOFDAY) && defined(WIN32)
	57	#define HAS_GETTIMEOFDAY
	58
	59	/* shows up in winsock.h?
	60	struct timeval {
	61	long tv_sec;
	62	long tv_usec;
	63	}
	64	*/
	65
eb1a5092	66	typedef union {
	67	unsigned __int64 ft_i64;
	68	FILETIME ft_val;
	69	} FT_t;
	70
	71	/* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */
	72	#define EPOCH_BIAS 116444736000000000i64
	73
	74	/* NOTE: This does not compute the timezone info (doing so can be expensive,
	75	* and appears to be unsupported even by glibc) */
dcf686c9	76	int
eb1a5092	77	gettimeofday (struct timeval tp, void not_used)
dcf686c9	78	{
eb1a5092	79	FT_t ft;
	80
	81	/* this returns time in 100-nanosecond units (i.e. tens of usecs) */
	82	GetSystemTimeAsFileTime(&ft.ft_val);
	83
	84	/* seconds since epoch */
	85	tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / 10000000i64);
	86
	87	/* microseconds remaining */
	88	tp->tv_usec = (long)((ft.ft_i64 / 10i64) % 1000000i64);
	89
	90	return 0;
dcf686c9	91	}
	92	#endif
	93
	94	#if !defined(HAS_GETTIMEOFDAY) && defined(VMS)
	95	#define HAS_GETTIMEOFDAY
	96
9b6f56ad	97	#include <lnmdef.h>
dcf686c9	98	#include <time.h> /* gettimeofday */
	99	#include <stdlib.h> /* qdiv */
	100	#include <starlet.h> /* sys$gettim */
	101	#include <descrip.h>
3785778e	102	#ifdef __VAX
	103	#include <lib$routines.h> /* lib$ediv() */
	104	#endif
dcf686c9	105
	106	/*
	107	VMS binary time is expressed in 100 nano-seconds since
	108	system base time which is 17-NOV-1858 00:00:00.00
	109	*/
	110
	111	#define DIV_100NS_TO_SECS 10000000L
	112	#define DIV_100NS_TO_USECS 10L
	113
	114	/*
	115	gettimeofday is supposed to return times since the epoch
	116	so need to determine this in terms of VMS base time
	117	*/
	118	static $DESCRIPTOR(dscepoch,"01-JAN-1970 00:00:00.00");
	119
5cdb7193	120	#ifdef __VAX
3785778e	121	static long base_adjust[2]={0L,0L};
5cdb7193	122	#else
dcf686c9	123	static __int64 base_adjust=0;
5cdb7193	124	#endif
dcf686c9	125
9b6f56ad	126	/*
	127
	128	If we don't have gettimeofday, then likely we are on a VMS machine that
	129	operates on local time rather than UTC...so we have to zone-adjust.
	130	This code gleefully swiped from VMS.C
	131
	132	*/
	133	/* method used to handle UTC conversions:
	134	* 1 == CRTL gmtime(); 2 == SYS$TIMEZONE_DIFFERENTIAL; 3 == no correction
	135	*/
	136	static int gmtime_emulation_type;
	137	/* number of secs to add to UTC POSIX-style time to get local time */
	138	static long int utc_offset_secs;
	139	static struct dsc$descriptor_s fildevdsc =
	140	{ 12, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$FILE_DEV" };
	141	static struct dsc$descriptor_s *fildev[] = { &fildevdsc, NULL };
	142
	143	static time_t toutc_dst(time_t loc) {
	144	struct tm *rsltmp;
	145
	146	if ((rsltmp = localtime(&loc)) == NULL) return -1;
	147	loc -= utc_offset_secs;
	148	if (rsltmp->tm_isdst) loc -= 3600;
	149	return loc;
	150	}
	151
	152	static time_t toloc_dst(time_t utc) {
	153	struct tm *rsltmp;
	154
	155	utc += utc_offset_secs;
	156	if ((rsltmp = localtime(&utc)) == NULL) return -1;
	157	if (rsltmp->tm_isdst) utc += 3600;
	158	return utc;
	159	}
	160
	161	#define _toutc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \
	162	((gmtime_emulation_type \|\| timezone_setup()), \
	163	(gmtime_emulation_type == 1 ? toutc_dst(secs) : \
	164	((secs) - utc_offset_secs))))
	165
	166	#define _toloc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \
	167	((gmtime_emulation_type \|\| timezone_setup()), \
	168	(gmtime_emulation_type == 1 ? toloc_dst(secs) : \
	169	((secs) + utc_offset_secs))))
	170
	171	static int
	172	timezone_setup(void)
	173	{
	174	struct tm *tm_p;
	175
	176	if (gmtime_emulation_type == 0) {
	177	int dstnow;
	178	time_t base = 15 * 86400; /* 15jan71; to avoid month/year ends between */
	179	/* results of calls to gmtime() and localtime() */
	180	/* for same &base */
	181
	182	gmtime_emulation_type++;
	183	if ((tm_p = gmtime(&base)) == NULL) { /* CRTL gmtime() is a fake */
	184	char off[LNM$C_NAMLENGTH+1];;
	185
	186	gmtime_emulation_type++;
	187	if (!Perl_vmstrnenv("SYS$TIMEZONE_DIFFERENTIAL",off,0,fildev,0)) {
	188	gmtime_emulation_type++;
	189	utc_offset_secs = 0;
190	Perl_warn(aTHX_ "no UTC offset information; assuming local time is UTC");
191	}
192	else { utc_offset_secs = atol(off); }
193	}
194	else { /* We've got a working gmtime() */
195	struct tm gmt, local;
196
197	gmt = *tm_p;
198	tm_p = localtime(&base);
199	local = *tm_p;
200	utc_offset_secs = (local.tm_mday - gmt.tm_mday) * 86400;
201	utc_offset_secs += (local.tm_hour - gmt.tm_hour) * 3600;
202	utc_offset_secs += (local.tm_min - gmt.tm_min) * 60;
203	utc_offset_secs += (local.tm_sec - gmt.tm_sec);
204	}
205	}
206	return 1;
207	}
208
209
dcf686c9	210	int
	211	gettimeofday (struct timeval tp, void tpz)
	212	{
	213	long ret;
5cdb7193	214	#ifdef __VAX
3785778e	215	long quad[2];
	216	long quad1[2];
	217	long div_100ns_to_secs;
	218	long div_100ns_to_usecs;
	219	long quo,rem;
	220	long quo1,rem1;
5cdb7193	221	#else
dcf686c9	222	__int64 quad;
dcf686c9	223	__qdiv_t ans1,ans2;
5cdb7193	224	#endif
dcf686c9	225	/*
	226	In case of error, tv_usec = 0 and tv_sec = VMS condition code.
	227	The return from function is also set to -1.
	228	This is not exactly as per the manual page.
	229	*/
	230
	231	tp->tv_usec = 0;
	232
3785778e	233	#ifdef __VAX
	234	if (base_adjust[0]==0 && base_adjust[1]==0) {
	235	#else
dcf686c9	236	if (base_adjust==0) { /* Need to determine epoch adjustment */
3785778e	237	#endif
dcf686c9	238	ret=sys$bintim(&dscepoch,&base_adjust);
	239	if (1 != (ret &&1)) {
	240	tp->tv_sec = ret;
	241	return -1;
	242	}
	243	}
	244
	245	ret=sys$gettim(&quad); /* Get VMS system time */
	246	if ((1 && ret) == 1) {
5cdb7193	247	#ifdef __VAX
3785778e	248	quad[0] -= base_adjust[0]; /* convert to epoch offset */
	249	quad[1] -= base_adjust[1]; /* convert 2nd half of quadword */
	250	div_100ns_to_secs = DIV_100NS_TO_SECS;
	251	div_100ns_to_usecs = DIV_100NS_TO_USECS;
	252	lib$ediv(&div_100ns_to_secs,&quad,&quo,&rem);
	253	quad1[0] = rem;
	254	quad1[1] = 0L;
	255	lib$ediv(&div_100ns_to_usecs,&quad1,&quo1,&rem1);
	256	tp->tv_sec = quo; /* Whole seconds */
	257	tp->tv_usec = quo1; /* Micro-seconds */
5cdb7193	258	#else
3785778e	259	quad -= base_adjust; /* convert to epoch offset */
dcf686c9	260	ans1=qdiv(quad,DIV_100NS_TO_SECS);
	261	ans2=qdiv(ans1.rem,DIV_100NS_TO_USECS);
	262	tp->tv_sec = ans1.quot; /* Whole seconds */
	263	tp->tv_usec = ans2.quot; /* Micro-seconds */
3785778e	264	#endif
dcf686c9	265	} else {
	266	tp->tv_sec = ret;
	267	return -1;
	268	}
9b6f56ad	269	# ifdef VMSISH_TIME
	270	# ifdef RTL_USES_UTC
	271	if (VMSISH_TIME) tp->tv_sec = _toloc(tp->tv_sec);
	272	# else
	273	if (!VMSISH_TIME) tp->tv_sec = _toutc(tp->tv_sec);
	274	# endif
	275	# endif
dcf686c9	276	return 0;
	277	}
	278	#endif
	279
	280	#if !defined(HAS_USLEEP) && defined(HAS_SELECT)
	281	#ifndef SELECT_IS_BROKEN
	282	#define HAS_USLEEP
	283	#define usleep hrt_usleep /* could conflict with ncurses for static build */
	284
	285	void
	286	hrt_usleep(unsigned long usec)
	287	{
	288	struct timeval tv;
	289	tv.tv_sec = 0;
	290	tv.tv_usec = usec;
	291	select(0, (Select_fd_set_t)NULL, (Select_fd_set_t)NULL,
	292	(Select_fd_set_t)NULL, &tv);
	293	}
	294	#endif
	295	#endif
	296
	297	#if !defined(HAS_USLEEP) && defined(WIN32)
	298	#define HAS_USLEEP
	299	#define usleep hrt_usleep /* could conflict with ncurses for static build */
	300
	301	void
	302	hrt_usleep(unsigned long usec)
	303	{
	304	long msec;
	305	msec = usec / 1000;
	306	Sleep (msec);
	307	}
	308	#endif
	309
	310
	311	#if !defined(HAS_UALARM) && defined(HAS_SETITIMER)
	312	#define HAS_UALARM
	313	#define ualarm hrt_ualarm /* could conflict with ncurses for static build */
	314
	315	int
	316	hrt_ualarm(int usec, int interval)
	317	{
	318	struct itimerval itv;
	319	itv.it_value.tv_sec = usec / 1000000;
	320	itv.it_value.tv_usec = usec % 1000000;
	321	itv.it_interval.tv_sec = interval / 1000000;
	322	itv.it_interval.tv_usec = interval % 1000000;
	323	return setitimer(ITIMER_REAL, &itv, 0);
	324	}
	325	#endif
	326
ca40fe49	327	#if !defined(HAS_UALARM) && defined(VMS)
	328	#define HAS_UALARM
	329	#define ualarm vms_ualarm
	330
	331	#include <lib$routines.h>
	332	#include <ssdef.h>
	333	#include <starlet.h>
	334	#include <descrip.h>
	335	#include <signal.h>
	336	#include <jpidef.h>
	337	#include <psldef.h>
	338
	339	#define VMSERR(s) (!((s)&1))
	340
	341	static void
	342	us_to_VMS(useconds_t mseconds, unsigned long v[])
	343	{
	344	int iss;
	345	unsigned long qq[2];
	346
	347	qq[0] = mseconds;
	348	qq[1] = 0;
	349	v[0] = v[1] = 0;
	350
	351	iss = lib$addx(qq,qq,qq);
	352	if (VMSERR(iss)) lib$signal(iss);
	353	iss = lib$subx(v,qq,v);
	354	if (VMSERR(iss)) lib$signal(iss);
	355	iss = lib$addx(qq,qq,qq);
	356	if (VMSERR(iss)) lib$signal(iss);
	357	iss = lib$subx(v,qq,v);
	358	if (VMSERR(iss)) lib$signal(iss);
	359	iss = lib$subx(v,qq,v);
	360	if (VMSERR(iss)) lib$signal(iss);
	361	}
	362
	363	static int
	364	VMS_to_us(unsigned long v[])
	365	{
	366	int iss;
	367	unsigned long div=10,quot, rem;
	368
	369	iss = lib$ediv(&div,v,&quot,&rem);
	370	if (VMSERR(iss)) lib$signal(iss);
	371
	372	return quot;
	373	}
	374
	375	typedef unsigned short word;
	376	typedef struct _ualarm {
	377	int function;
	378	int repeat;
	379	unsigned long delay[2];
	380	unsigned long interval[2];
	381	unsigned long remain[2];
	382	} Alarm;
	383
	384
	385	static int alarm_ef;
	386	static Alarm *a0, alarm_base;
	387	#define UAL_NULL 0
	388	#define UAL_SET 1
	389	#define UAL_CLEAR 2
	390	#define UAL_ACTIVE 4
391	static void ualarm_AST(Alarm *a);
392
393	static int
394	vms_ualarm(int mseconds, int interval)
395	{
396	Alarm *a, abase;
397	struct item_list3 {
398	word length;
399	word code;
400	void *bufaddr;
401	void *retlenaddr;
402	} ;
403	static struct item_list3 itmlst[2];
404	static int first = 1;
405	unsigned long asten;
406	int iss, enabled;
407
408	if (first) {
409	first = 0;
410	itmlst[0].code = JPI$_ASTEN;
411	itmlst[0].length = sizeof(asten);
412	itmlst[0].retlenaddr = NULL;
413	itmlst[1].code = 0;
414	itmlst[1].length = 0;
415	itmlst[1].bufaddr = NULL;
416	itmlst[1].retlenaddr = NULL;
417
418	iss = lib$get_ef(&alarm_ef);
419	if (VMSERR(iss)) lib$signal(iss);
420
421	a0 = &alarm_base;
422	a0->function = UAL_NULL;
423	}
424	itmlst[0].bufaddr = &asten;
425
426	iss = sys$getjpiw(0,0,0,itmlst,0,0,0);
427	if (VMSERR(iss)) lib$signal(iss);
428	if (!(asten&0x08)) return -1;
429
430	a = &abase;
431	if (mseconds) {
432	a->function = UAL_SET;
433	} else {
434	a->function = UAL_CLEAR;
435	}
436
437	us_to_VMS(mseconds, a->delay);
438	if (interval) {
439	us_to_VMS(interval, a->interval);
440	a->repeat = 1;
441	} else
442	a->repeat = 0;
443
444	iss = sys$clref(alarm_ef);
445	if (VMSERR(iss)) lib$signal(iss);
446
447	iss = sys$dclast(ualarm_AST,a,0);
448	if (VMSERR(iss)) lib$signal(iss);
449
450	iss = sys$waitfr(alarm_ef);
451	if (VMSERR(iss)) lib$signal(iss);
452
453	if (a->function == UAL_ACTIVE)
454	return VMS_to_us(a->remain);
455	else
456	return 0;
457	}
458
459
460
461	static void
462	ualarm_AST(Alarm *a)
463	{
464	int iss;
465	unsigned long now[2];
466
467	iss = sys$gettim(now);
468	if (VMSERR(iss)) lib$signal(iss);
469
470	if (a->function == UAL_SET \|\| a->function == UAL_CLEAR) {
471	if (a0->function == UAL_ACTIVE) {
472	iss = sys$cantim(a0,PSL$C_USER);
473	if (VMSERR(iss)) lib$signal(iss);
474
475	iss = lib$subx(a0->remain, now, a->remain);
476	if (VMSERR(iss)) lib$signal(iss);
477
478	if (a->remain[1] & 0x80000000)
479	a->remain[0] = a->remain[1] = 0;
480	}
481
482	if (a->function == UAL_SET) {
483	a->function = a0->function;
484	a0->function = UAL_ACTIVE;
485	a0->repeat = a->repeat;
486	if (a0->repeat) {
487	a0->interval[0] = a->interval[0];
488	a0->interval[1] = a->interval[1];
489	}
490	a0->delay[0] = a->delay[0];
491	a0->delay[1] = a->delay[1];
492
493	iss = lib$subx(now, a0->delay, a0->remain);
494	if (VMSERR(iss)) lib$signal(iss);
495
496	iss = sys$setimr(0,a0->delay,ualarm_AST,a0);
497	if (VMSERR(iss)) lib$signal(iss);
498	} else {
499	a->function = a0->function;
500	a0->function = UAL_NULL;
501	}
502	iss = sys$setef(alarm_ef);
503	if (VMSERR(iss)) lib$signal(iss);
504	} else if (a->function == UAL_ACTIVE) {
505	if (a->repeat) {
506	iss = lib$subx(now, a->interval, a->remain);
507	if (VMSERR(iss)) lib$signal(iss);
508
509	iss = sys$setimr(0,a->interval,ualarm_AST,a);
510	if (VMSERR(iss)) lib$signal(iss);
511	} else {
512	a->function = UAL_NULL;
513	}
514	iss = sys$wake(0,0);
515	if (VMSERR(iss)) lib$signal(iss);
516	lib$signal(SS$_ASTFLT);
517	} else {
518	lib$signal(SS$_BADPARAM);
519	}
520	}
521
522	#endif /* !HAS_UALARM && VMS */
523
524
525
dcf686c9	526	#ifdef HAS_GETTIMEOFDAY
dcf686c9	527
a2e20b18	528	static int
dcf686c9	529	myU2time(UV *ret)
	530	{
	531	struct timeval Tp;
	532	int status;
	533	status = gettimeofday (&Tp, NULL);
	534	ret[0] = Tp.tv_sec;
	535	ret[1] = Tp.tv_usec;
a2e20b18	536	return status;
dcf686c9	537	}
dcf686c9	538
3c72ec00	539	static NV
dcf686c9	540	myNVtime()
	541	{
	542	struct timeval Tp;
	543	int status;
	544	status = gettimeofday (&Tp, NULL);
a2e20b18	545	return status == 0 ? Tp.tv_sec + (Tp.tv_usec / 1000000.) : -1.0;
dcf686c9	546	}
	547
	548	#endif
	549
	550	MODULE = Time::HiRes PACKAGE = Time::HiRes
	551
	552	PROTOTYPES: ENABLE
	553
	554	BOOT:
dcf686c9	555	#ifdef HAS_GETTIMEOFDAY
a2e20b18	556	{
	557	UV auv[2];
	558	hv_store(PL_modglobal, "Time::NVtime", 12, newSViv((IV) myNVtime()), 0);
	559	if (myU2time(auv) == 0)
	560	hv_store(PL_modglobal, "Time::U2time", 12, newSViv((IV) auv[0]), 0);
	561	}
dcf686c9	562	#endif
dcf686c9	563
3c72ec00	564	IV
	565	constant(name, arg)
	566	char * name
	567	int arg
	568
52d72fba	569	#if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY)
dcf686c9	570
92bc48ca	571	NV
dcf686c9	572	usleep(useconds)
92bc48ca	573	NV useconds
52d72fba	574	PREINIT:
	575	struct timeval Ta, Tb;
	576	CODE:
	577	gettimeofday(&Ta, NULL);
	578	if (items > 0) {
92bc48ca	579	if (useconds > 1E6) {
92bc48ca	580	IV seconds = (IV) (useconds / 1E6);
f7916ddb	581	/* If usleep() has been implemented using setitimer()
	582	* then this contortion is unnecessary-- but usleep()
	583	* may be implemented in some other way, so let's contort. */
	584	if (seconds) {
	585	sleep(seconds);
	586	useconds -= 1E6 * seconds;
	587	}
	588	} else if (useconds < 0.0)
	589	croak("Time::HiRes::usleep(%"NVgf"): negative time not invented yet", useconds);
92bc48ca	590	usleep((UV)useconds);
52d72fba	591	} else
	592	PerlProc_pause();
	593	gettimeofday(&Tb, NULL);
92bc48ca	594	#if 0
	595	printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
	596	#endif
	597	RETVAL = 1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec);
dcf686c9	598
52d72fba	599	OUTPUT:
	600	RETVAL
	601
	602	NV
f9d00e57	603	sleep(...)
52d72fba	604	PREINIT:
52d72fba	605	struct timeval Ta, Tb;
dcf686c9	606	CODE:
52d72fba	607	gettimeofday(&Ta, NULL);
92bc48ca	608	if (items > 0) {
92bc48ca	609	NV seconds = SvNV(ST(0));
f7916ddb	610	if (seconds >= 0.0) {
	611	UV useconds = 1E6 * (seconds - (UV)seconds);
	612	sleep((UV)seconds);
	613	usleep(useconds);
	614	} else
	615	croak("Time::HiRes::sleep(%"NVgf"): negative time not invented yet", seconds);
92bc48ca	616	} else
f9d00e57	617	PerlProc_pause();
52d72fba	618	gettimeofday(&Tb, NULL);
92bc48ca	619	#if 0
	620	printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
	621	#endif
52d72fba	622	RETVAL = (NV)(Tb.tv_sec-Ta.tv_sec)+0.000001*(NV)(Tb.tv_usec-Ta.tv_usec);
	623
	624	OUTPUT:
	625	RETVAL
dcf686c9	626
	627	#endif
	628
	629	#ifdef HAS_UALARM
	630
3de7a4ec	631	int
dcf686c9	632	ualarm(useconds,interval=0)
	633	int useconds
	634	int interval
f7916ddb	635	CODE:
f7916ddb	636	if (useconds < 0 \|\| interval < 0)
3de7a4ec	637	croak("Time::HiRes::ualarm(%d, %d): negative time not invented yet", useconds, interval);
f7916ddb	638	RETVAL = ualarm(useconds, interval);
dcf686c9	639
f7916ddb	640	OUTPUT:
	641	RETVAL
	642
	643	NV
	644	alarm(seconds,interval=0)
	645	NV seconds
	646	NV interval
dcf686c9	647	CODE:
f7916ddb	648	if (seconds < 0.0 \|\| interval < 0.0)
	649	croak("Time::HiRes::alarm(%"NVgf", %"NVgf"): negative time not invented yet", seconds, interval);
	650	RETVAL = (NV)ualarm(seconds * 1000000,
	651	interval * 1000000) / 1E6;
dcf686c9	652
c6c619a9	653	OUTPUT:
	654	RETVAL
	655
dcf686c9	656	#endif
	657
	658	#ifdef HAS_GETTIMEOFDAY
db835671	659	# ifdef MACOS_TRADITIONAL /* fix epoch TZ and use unsigned time_t */
	660	void
	661	gettimeofday()
	662	PREINIT:
	663	struct timeval Tp;
	664	struct timezone Tz;
	665	PPCODE:
	666	int status;
	667	status = gettimeofday (&Tp, &Tz);
	668	Tp.tv_sec += Tz.tz_minuteswest * 60; /* adjust for TZ */
	669
	670	if (GIMME == G_ARRAY) {
	671	EXTEND(sp, 2);
	672	/* Mac OS (Classic) has unsigned time_t */
	673	PUSHs(sv_2mortal(newSVuv(Tp.tv_sec)));
	674	PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
	675	} else {
	676	EXTEND(sp, 1);
	677	PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / 1000000.0))));
	678	}
	679
	680	NV
	681	time()
	682	PREINIT:
	683	struct timeval Tp;
	684	struct timezone Tz;
	685	CODE:
	686	int status;
	687	status = gettimeofday (&Tp, &Tz);
	688	Tp.tv_sec += Tz.tz_minuteswest * 60; /* adjust for TZ */
	689	RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.0);
	690	OUTPUT:
	691	RETVAL
dcf686c9	692
db835671	693	# else /* MACOS_TRADITIONAL */
dcf686c9	694	void
	695	gettimeofday()
	696	PREINIT:
	697	struct timeval Tp;
	698	PPCODE:
	699	int status;
	700	status = gettimeofday (&Tp, NULL);
	701	if (GIMME == G_ARRAY) {
	702	EXTEND(sp, 2);
	703	PUSHs(sv_2mortal(newSViv(Tp.tv_sec)));
	704	PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
	705	} else {
	706	EXTEND(sp, 1);
	707	PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / 1000000.0))));
	708	}
	709
3c72ec00	710	NV
dcf686c9	711	time()
	712	PREINIT:
	713	struct timeval Tp;
	714	CODE:
	715	int status;
	716	status = gettimeofday (&Tp, NULL);
	717	RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.);
	718	OUTPUT:
	719	RETVAL
	720
db835671	721	# endif /* MACOS_TRADITIONAL */
dcf686c9	722	#endif
dcf686c9	723
3c72ec00	724	#if defined(HAS_GETITIMER) && defined(HAS_SETITIMER)
	725
	726	#define TV2NV(tv) ((NV)((tv).tv_sec) + 0.000001 * (NV)((tv).tv_usec))
	727
	728	void
	729	setitimer(which, seconds, interval = 0)
	730	int which
	731	NV seconds
	732	NV interval
	733	PREINIT:
	734	struct itimerval newit;
	735	struct itimerval oldit;
	736	PPCODE:
f7916ddb	737	if (seconds < 0.0 \|\| interval < 0.0)
f7916ddb	738	croak("Time::HiRes::setitimer(%"IVdf", %"NVgf", %"NVgf"): negative time not invented yet", which, seconds, interval);
3c72ec00	739	newit.it_value.tv_sec = seconds;
	740	newit.it_value.tv_usec =
	741	(seconds - (NV)newit.it_value.tv_sec) * 1000000.0;
	742	newit.it_interval.tv_sec = interval;
	743	newit.it_interval.tv_usec =
	744	(interval - (NV)newit.it_interval.tv_sec) * 1000000.0;
	745	if (setitimer(which, &newit, &oldit) == 0) {
	746	EXTEND(sp, 1);
	747	PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_value))));
	748	if (GIMME == G_ARRAY) {
	749	EXTEND(sp, 1);
	750	PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_interval))));
	751	}
	752	}
	753
	754	void
	755	getitimer(which)
	756	int which
	757	PREINIT:
	758	struct itimerval nowit;
	759	PPCODE:
	760	if (getitimer(which, &nowit) == 0) {
	761	EXTEND(sp, 1);
	762	PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_value))));
	763	if (GIMME == G_ARRAY) {
	764	EXTEND(sp, 1);
	765	PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_interval))));
	766	}
	767	}
	768
	769	#endif
	770
dcf686c9	771	# $Id: HiRes.xs,v 1.11 1999/03/16 02:27:38 wegscd Exp wegscd $
	772
	773	# $Log: HiRes.xs,v $
	774	# Revision 1.11 1999/03/16 02:27:38 wegscd
	775	# Add U2time, NVtime. Fix symbols for static link.
	776	#
	777	# Revision 1.10 1998/09/30 02:36:25 wegscd
	778	# Add VMS changes.
	779	#
	780	# Revision 1.9 1998/07/07 02:42:06 wegscd
	781	# Win32 usleep()
	782	#
	783	# Revision 1.8 1998/07/02 01:47:26 wegscd
	784	# Add Win32 code for gettimeofday.
	785	#
	786	# Revision 1.7 1997/11/13 02:08:12 wegscd
	787	# Add missing EXTEND in gettimeofday() scalar code.
	788	#
	789	# Revision 1.6 1997/11/11 02:32:35 wegscd
	790	# Do something useful when calling gettimeofday() in a scalar context.
	791	# The patch is courtesy of Gisle Aas.
	792	#
	793	# Revision 1.5 1997/11/06 03:10:47 wegscd
	794	# Fake ualarm() if we have setitimer.
	795	#
	796	# Revision 1.4 1997/11/05 05:41:23 wegscd
	797	# Turn prototypes ON (suggested by Gisle Aas)
	798	#
	799	# Revision 1.3 1997/10/13 20:56:15 wegscd
	800	# Add PROTOTYPES: DISABLE
	801	#
	802	# Revision 1.2 1997/05/23 01:01:38 wegscd
	803	# Conditional compilation, depending on what the OS gives us.
	804	#
	805	# Revision 1.1 1996/09/03 18:26:35 wegscd
	806	# Initial revision
	807	#
	808	#