[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 <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

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;
 }
 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

#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

#ifdef HAS_USLEEP

void
usleep(useconds)
        int useconds 

void
sleep(...)
	PROTOTYPE: ;$
	CODE:
	if (items > 0)
	    usleep((int)(SvNV(ST(0)) * 1000000));
	else
	    PerlProc_pause();

#endif

#ifdef HAS_UALARM

int
ualarm(useconds,interval=0)
	int useconds
	int interval

int
alarm(fseconds,finterval=0)
	NV fseconds
	NV finterval
	PREINIT:
	int useconds, uinterval;
	CODE:
	useconds = fseconds * 1000000;
	uinterval = finterval * 1000000;
	RETVAL = ualarm (useconds, uinterval);

	OUTPUT:
	RETVAL

#endif

#ifdef HAS_GETTIMEOFDAY

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

#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:
	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
	97	#include <time.h> /* gettimeofday */
	98	#include <stdlib.h> /* qdiv */
	99	#include <starlet.h> /* sys$gettim */
	100	#include <descrip.h>
3785778e	101	#ifdef __VAX
	102	#include <lib$routines.h> /* lib$ediv() */
	103	#endif
dcf686c9	104
	105	/*
	106	VMS binary time is expressed in 100 nano-seconds since
	107	system base time which is 17-NOV-1858 00:00:00.00
	108	*/
	109
	110	#define DIV_100NS_TO_SECS 10000000L
	111	#define DIV_100NS_TO_USECS 10L
	112
	113	/*
	114	gettimeofday is supposed to return times since the epoch
	115	so need to determine this in terms of VMS base time
	116	*/
	117	static $DESCRIPTOR(dscepoch,"01-JAN-1970 00:00:00.00");
	118
5cdb7193	119	#ifdef __VAX
3785778e	120	static long base_adjust[2]={0L,0L};
5cdb7193	121	#else
dcf686c9	122	static __int64 base_adjust=0;
5cdb7193	123	#endif
dcf686c9	124
	125	int
	126	gettimeofday (struct timeval tp, void tpz)
	127	{
	128	long ret;
5cdb7193	129	#ifdef __VAX
3785778e	130	long quad[2];
	131	long quad1[2];
	132	long div_100ns_to_secs;
	133	long div_100ns_to_usecs;
	134	long quo,rem;
	135	long quo1,rem1;
5cdb7193	136	#else
dcf686c9	137	__int64 quad;
dcf686c9	138	__qdiv_t ans1,ans2;
5cdb7193	139	#endif
dcf686c9	140	/*
	141	In case of error, tv_usec = 0 and tv_sec = VMS condition code.
	142	The return from function is also set to -1.
	143	This is not exactly as per the manual page.
	144	*/
	145
	146	tp->tv_usec = 0;
	147
3785778e	148	#ifdef __VAX
	149	if (base_adjust[0]==0 && base_adjust[1]==0) {
	150	#else
dcf686c9	151	if (base_adjust==0) { /* Need to determine epoch adjustment */
3785778e	152	#endif
dcf686c9	153	ret=sys$bintim(&dscepoch,&base_adjust);
	154	if (1 != (ret &&1)) {
	155	tp->tv_sec = ret;
	156	return -1;
	157	}
	158	}
	159
	160	ret=sys$gettim(&quad); /* Get VMS system time */
	161	if ((1 && ret) == 1) {
5cdb7193	162	#ifdef __VAX
3785778e	163	quad[0] -= base_adjust[0]; /* convert to epoch offset */
	164	quad[1] -= base_adjust[1]; /* convert 2nd half of quadword */
	165	div_100ns_to_secs = DIV_100NS_TO_SECS;
	166	div_100ns_to_usecs = DIV_100NS_TO_USECS;
	167	lib$ediv(&div_100ns_to_secs,&quad,&quo,&rem);
	168	quad1[0] = rem;
	169	quad1[1] = 0L;
	170	lib$ediv(&div_100ns_to_usecs,&quad1,&quo1,&rem1);
	171	tp->tv_sec = quo; /* Whole seconds */
	172	tp->tv_usec = quo1; /* Micro-seconds */
5cdb7193	173	#else
3785778e	174	quad -= base_adjust; /* convert to epoch offset */
dcf686c9	175	ans1=qdiv(quad,DIV_100NS_TO_SECS);
	176	ans2=qdiv(ans1.rem,DIV_100NS_TO_USECS);
	177	tp->tv_sec = ans1.quot; /* Whole seconds */
	178	tp->tv_usec = ans2.quot; /* Micro-seconds */
3785778e	179	#endif
dcf686c9	180	} else {
	181	tp->tv_sec = ret;
	182	return -1;
	183	}
	184	return 0;
	185	}
	186	#endif
	187
	188	#if !defined(HAS_USLEEP) && defined(HAS_SELECT)
	189	#ifndef SELECT_IS_BROKEN
	190	#define HAS_USLEEP
	191	#define usleep hrt_usleep /* could conflict with ncurses for static build */
	192
	193	void
	194	hrt_usleep(unsigned long usec)
	195	{
	196	struct timeval tv;
	197	tv.tv_sec = 0;
	198	tv.tv_usec = usec;
	199	select(0, (Select_fd_set_t)NULL, (Select_fd_set_t)NULL,
	200	(Select_fd_set_t)NULL, &tv);
	201	}
	202	#endif
	203	#endif
	204
	205	#if !defined(HAS_USLEEP) && defined(WIN32)
	206	#define HAS_USLEEP
	207	#define usleep hrt_usleep /* could conflict with ncurses for static build */
	208
	209	void
	210	hrt_usleep(unsigned long usec)
	211	{
	212	long msec;
	213	msec = usec / 1000;
	214	Sleep (msec);
	215	}
	216	#endif
	217
	218
	219	#if !defined(HAS_UALARM) && defined(HAS_SETITIMER)
	220	#define HAS_UALARM
	221	#define ualarm hrt_ualarm /* could conflict with ncurses for static build */
	222
	223	int
	224	hrt_ualarm(int usec, int interval)
	225	{
	226	struct itimerval itv;
	227	itv.it_value.tv_sec = usec / 1000000;
	228	itv.it_value.tv_usec = usec % 1000000;
	229	itv.it_interval.tv_sec = interval / 1000000;
	230	itv.it_interval.tv_usec = interval % 1000000;
	231	return setitimer(ITIMER_REAL, &itv, 0);
	232	}
	233	#endif
	234
	235	#ifdef HAS_GETTIMEOFDAY
	236
a2e20b18	237	static int
dcf686c9	238	myU2time(UV *ret)
	239	{
	240	struct timeval Tp;
	241	int status;
	242	status = gettimeofday (&Tp, NULL);
	243	ret[0] = Tp.tv_sec;
	244	ret[1] = Tp.tv_usec;
a2e20b18	245	return status;
dcf686c9	246	}
dcf686c9	247
3c72ec00	248	static NV
dcf686c9	249	myNVtime()
	250	{
	251	struct timeval Tp;
	252	int status;
	253	status = gettimeofday (&Tp, NULL);
a2e20b18	254	return status == 0 ? Tp.tv_sec + (Tp.tv_usec / 1000000.) : -1.0;
dcf686c9	255	}
	256
	257	#endif
	258
	259	MODULE = Time::HiRes PACKAGE = Time::HiRes
	260
	261	PROTOTYPES: ENABLE
	262
	263	BOOT:
dcf686c9	264	#ifdef HAS_GETTIMEOFDAY
a2e20b18	265	{
	266	UV auv[2];
	267	hv_store(PL_modglobal, "Time::NVtime", 12, newSViv((IV) myNVtime()), 0);
	268	if (myU2time(auv) == 0)
	269	hv_store(PL_modglobal, "Time::U2time", 12, newSViv((IV) auv[0]), 0);
	270	}
dcf686c9	271	#endif
dcf686c9	272
3c72ec00	273	IV
	274	constant(name, arg)
	275	char * name
	276	int arg
	277
dcf686c9	278	#ifdef HAS_USLEEP
	279
	280	void
	281	usleep(useconds)
	282	int useconds
	283
	284	void
f9d00e57	285	sleep(...)
89c2f7cb	286	PROTOTYPE: ;$
dcf686c9	287	CODE:
f9d00e57	288	if (items > 0)
	289	usleep((int)(SvNV(ST(0)) * 1000000));
	290	else
	291	PerlProc_pause();
dcf686c9	292
	293	#endif
	294
	295	#ifdef HAS_UALARM
	296
	297	int
	298	ualarm(useconds,interval=0)
	299	int useconds
	300	int interval
	301
	302	int
	303	alarm(fseconds,finterval=0)
3c72ec00	304	NV fseconds
3c72ec00	305	NV finterval
dcf686c9	306	PREINIT:
	307	int useconds, uinterval;
	308	CODE:
	309	useconds = fseconds * 1000000;
	310	uinterval = finterval * 1000000;
	311	RETVAL = ualarm (useconds, uinterval);
	312
c6c619a9	313	OUTPUT:
	314	RETVAL
	315
dcf686c9	316	#endif
	317
	318	#ifdef HAS_GETTIMEOFDAY
	319
	320	void
	321	gettimeofday()
	322	PREINIT:
	323	struct timeval Tp;
	324	PPCODE:
	325	int status;
	326	status = gettimeofday (&Tp, NULL);
	327	if (GIMME == G_ARRAY) {
	328	EXTEND(sp, 2);
	329	PUSHs(sv_2mortal(newSViv(Tp.tv_sec)));
	330	PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
	331	} else {
	332	EXTEND(sp, 1);
	333	PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / 1000000.0))));
	334	}
	335
3c72ec00	336	NV
dcf686c9	337	time()
	338	PREINIT:
	339	struct timeval Tp;
	340	CODE:
	341	int status;
	342	status = gettimeofday (&Tp, NULL);
	343	RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.);
	344	OUTPUT:
	345	RETVAL
	346
	347	#endif
	348
3c72ec00	349	#if defined(HAS_GETITIMER) && defined(HAS_SETITIMER)
	350
	351	#define TV2NV(tv) ((NV)((tv).tv_sec) + 0.000001 * (NV)((tv).tv_usec))
	352
	353	void
	354	setitimer(which, seconds, interval = 0)
	355	int which
	356	NV seconds
	357	NV interval
	358	PREINIT:
	359	struct itimerval newit;
	360	struct itimerval oldit;
	361	PPCODE:
	362	newit.it_value.tv_sec = seconds;
	363	newit.it_value.tv_usec =
	364	(seconds - (NV)newit.it_value.tv_sec) * 1000000.0;
	365	newit.it_interval.tv_sec = interval;
	366	newit.it_interval.tv_usec =
	367	(interval - (NV)newit.it_interval.tv_sec) * 1000000.0;
	368	if (setitimer(which, &newit, &oldit) == 0) {
	369	EXTEND(sp, 1);
	370	PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_value))));
	371	if (GIMME == G_ARRAY) {
	372	EXTEND(sp, 1);
	373	PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_interval))));
	374	}
	375	}
	376
	377	void
	378	getitimer(which)
	379	int which
	380	PREINIT:
	381	struct itimerval nowit;
	382	PPCODE:
	383	if (getitimer(which, &nowit) == 0) {
	384	EXTEND(sp, 1);
	385	PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_value))));
	386	if (GIMME == G_ARRAY) {
	387	EXTEND(sp, 1);
	388	PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_interval))));
	389	}
	390	}
	391
	392	#endif
	393
dcf686c9	394	# $Id: HiRes.xs,v 1.11 1999/03/16 02:27:38 wegscd Exp wegscd $
	395
	396	# $Log: HiRes.xs,v $
	397	# Revision 1.11 1999/03/16 02:27:38 wegscd
	398	# Add U2time, NVtime. Fix symbols for static link.
	399	#
	400	# Revision 1.10 1998/09/30 02:36:25 wegscd
	401	# Add VMS changes.
	402	#
	403	# Revision 1.9 1998/07/07 02:42:06 wegscd
	404	# Win32 usleep()
	405	#
	406	# Revision 1.8 1998/07/02 01:47:26 wegscd
	407	# Add Win32 code for gettimeofday.
	408	#
	409	# Revision 1.7 1997/11/13 02:08:12 wegscd
	410	# Add missing EXTEND in gettimeofday() scalar code.
	411	#
	412	# Revision 1.6 1997/11/11 02:32:35 wegscd
	413	# Do something useful when calling gettimeofday() in a scalar context.
	414	# The patch is courtesy of Gisle Aas.
	415	#
	416	# Revision 1.5 1997/11/06 03:10:47 wegscd
	417	# Fake ualarm() if we have setitimer.
	418	#
	419	# Revision 1.4 1997/11/05 05:41:23 wegscd
	420	# Turn prototypes ON (suggested by Gisle Aas)
	421	#
	422	# Revision 1.3 1997/10/13 20:56:15 wegscd
	423	# Add PROTOTYPES: DISABLE
	424	#
	425	# Revision 1.2 1997/05/23 01:01:38 wegscd
	426	# Conditional compilation, depending on what the OS gives us.
	427	#
	428	# Revision 1.1 1996/09/03 18:26:35 wegscd
	429	# Initial revision
	430	#
	431	#