[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;
}
*/

int
gettimeofday (struct timeval *tp, int nothing)
{
 SYSTEMTIME st;
 time_t tt;
 struct tm tmtm;
 /* mktime converts local to UTC */
 GetLocalTime (&st);
 tmtm.tm_sec = st.wSecond;
 tmtm.tm_min = st.wMinute;
 tmtm.tm_hour = st.wHour;
 tmtm.tm_mday = st.wDay;
 tmtm.tm_mon = st.wMonth - 1;
 tmtm.tm_year = st.wYear - 1900;
 tmtm.tm_isdst = -1;
 tt = mktime (&tmtm);
 tp->tv_sec = tt;
 tp->tv_usec = st.wMilliseconds * 1000;
 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>

/*
        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");

static __int64 base_adjust=0;

int
gettimeofday (struct timeval *tp, void *tpz)
{
 long ret;
 __int64 quad;
 __qdiv_t ans1,ans2;

/*
        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;

 if (base_adjust==0) { /* Need to determine epoch adjustment */
        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) {
        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 */
 } 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(fseconds)
        NV fseconds 
	CODE:
	int useconds = fseconds * 1000000;
	usleep (useconds);

#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
	66	int
	67	gettimeofday (struct timeval *tp, int nothing)
	68	{
	69	SYSTEMTIME st;
	70	time_t tt;
	71	struct tm tmtm;
	72	/* mktime converts local to UTC */
	73	GetLocalTime (&st);
	74	tmtm.tm_sec = st.wSecond;
	75	tmtm.tm_min = st.wMinute;
	76	tmtm.tm_hour = st.wHour;
	77	tmtm.tm_mday = st.wDay;
	78	tmtm.tm_mon = st.wMonth - 1;
	79	tmtm.tm_year = st.wYear - 1900;
	80	tmtm.tm_isdst = -1;
	81	tt = mktime (&tmtm);
	82	tp->tv_sec = tt;
	83	tp->tv_usec = st.wMilliseconds * 1000;
	84	return 0;
	85	}
	86	#endif
	87
	88	#if !defined(HAS_GETTIMEOFDAY) && defined(VMS)
	89	#define HAS_GETTIMEOFDAY
	90
	91	#include <time.h> /* gettimeofday */
	92	#include <stdlib.h> /* qdiv */
	93	#include <starlet.h> /* sys$gettim */
	94	#include <descrip.h>
	95
	96	/*
	97	VMS binary time is expressed in 100 nano-seconds since
	98	system base time which is 17-NOV-1858 00:00:00.00
	99	*/
	100
	101	#define DIV_100NS_TO_SECS 10000000L
	102	#define DIV_100NS_TO_USECS 10L
	103
	104	/*
	105	gettimeofday is supposed to return times since the epoch
	106	so need to determine this in terms of VMS base time
	107	*/
	108	static $DESCRIPTOR(dscepoch,"01-JAN-1970 00:00:00.00");
	109
	110	static __int64 base_adjust=0;
	111
	112	int
	113	gettimeofday (struct timeval tp, void tpz)
	114	{
	115	long ret;
	116	__int64 quad;
	117	__qdiv_t ans1,ans2;
	118
	119	/*
120	In case of error, tv_usec = 0 and tv_sec = VMS condition code.
121	The return from function is also set to -1.
122	This is not exactly as per the manual page.
123	*/
124
125	tp->tv_usec = 0;
126
127	if (base_adjust==0) { /* Need to determine epoch adjustment */
128	ret=sys$bintim(&dscepoch,&base_adjust);
129	if (1 != (ret &&1)) {
130	tp->tv_sec = ret;
131	return -1;
132	}
133	}
134
135	ret=sys$gettim(&quad); /* Get VMS system time */
136	if ((1 && ret) == 1) {
137	quad -= base_adjust; /* convert to epoch offset */
138	ans1=qdiv(quad,DIV_100NS_TO_SECS);
139	ans2=qdiv(ans1.rem,DIV_100NS_TO_USECS);
140	tp->tv_sec = ans1.quot; /* Whole seconds */
141	tp->tv_usec = ans2.quot; /* Micro-seconds */
142	} else {
143	tp->tv_sec = ret;
144	return -1;
145	}
146	return 0;
147	}
148	#endif
149
150	#if !defined(HAS_USLEEP) && defined(HAS_SELECT)
151	#ifndef SELECT_IS_BROKEN
152	#define HAS_USLEEP
153	#define usleep hrt_usleep /* could conflict with ncurses for static build */
154
155	void
156	hrt_usleep(unsigned long usec)
157	{
158	struct timeval tv;
159	tv.tv_sec = 0;
160	tv.tv_usec = usec;
161	select(0, (Select_fd_set_t)NULL, (Select_fd_set_t)NULL,
162	(Select_fd_set_t)NULL, &tv);
163	}
164	#endif
165	#endif
166
167	#if !defined(HAS_USLEEP) && defined(WIN32)
168	#define HAS_USLEEP
169	#define usleep hrt_usleep /* could conflict with ncurses for static build */
170
171	void
172	hrt_usleep(unsigned long usec)
173	{
174	long msec;
175	msec = usec / 1000;
176	Sleep (msec);
177	}
178	#endif
179
180
181	#if !defined(HAS_UALARM) && defined(HAS_SETITIMER)
182	#define HAS_UALARM
183	#define ualarm hrt_ualarm /* could conflict with ncurses for static build */
184
185	int
186	hrt_ualarm(int usec, int interval)
187	{
188	struct itimerval itv;
189	itv.it_value.tv_sec = usec / 1000000;
190	itv.it_value.tv_usec = usec % 1000000;
191	itv.it_interval.tv_sec = interval / 1000000;
192	itv.it_interval.tv_usec = interval % 1000000;
193	return setitimer(ITIMER_REAL, &itv, 0);
194	}
195	#endif
196
197	#ifdef HAS_GETTIMEOFDAY
198
a2e20b18	199	static int
dcf686c9	200	myU2time(UV *ret)
	201	{
	202	struct timeval Tp;
	203	int status;
	204	status = gettimeofday (&Tp, NULL);
	205	ret[0] = Tp.tv_sec;
	206	ret[1] = Tp.tv_usec;
a2e20b18	207	return status;
dcf686c9	208	}
dcf686c9	209
3c72ec00	210	static NV
dcf686c9	211	myNVtime()
	212	{
	213	struct timeval Tp;
	214	int status;
	215	status = gettimeofday (&Tp, NULL);
a2e20b18	216	return status == 0 ? Tp.tv_sec + (Tp.tv_usec / 1000000.) : -1.0;
dcf686c9	217	}
	218
	219	#endif
	220
	221	MODULE = Time::HiRes PACKAGE = Time::HiRes
	222
	223	PROTOTYPES: ENABLE
	224
	225	BOOT:
dcf686c9	226	#ifdef HAS_GETTIMEOFDAY
a2e20b18	227	{
	228	UV auv[2];
	229	hv_store(PL_modglobal, "Time::NVtime", 12, newSViv((IV) myNVtime()), 0);
	230	if (myU2time(auv) == 0)
	231	hv_store(PL_modglobal, "Time::U2time", 12, newSViv((IV) auv[0]), 0);
	232	}
dcf686c9	233	#endif
dcf686c9	234
3c72ec00	235	IV
	236	constant(name, arg)
	237	char * name
	238	int arg
	239
dcf686c9	240	#ifdef HAS_USLEEP
	241
	242	void
	243	usleep(useconds)
	244	int useconds
	245
	246	void
	247	sleep(fseconds)
3c72ec00	248	NV fseconds
dcf686c9	249	CODE:
	250	int useconds = fseconds * 1000000;
	251	usleep (useconds);
	252
	253	#endif
	254
	255	#ifdef HAS_UALARM
	256
	257	int
	258	ualarm(useconds,interval=0)
	259	int useconds
	260	int interval
	261
	262	int
	263	alarm(fseconds,finterval=0)
3c72ec00	264	NV fseconds
3c72ec00	265	NV finterval
dcf686c9	266	PREINIT:
	267	int useconds, uinterval;
	268	CODE:
	269	useconds = fseconds * 1000000;
	270	uinterval = finterval * 1000000;
	271	RETVAL = ualarm (useconds, uinterval);
	272
c6c619a9	273	OUTPUT:
	274	RETVAL
	275
dcf686c9	276	#endif
	277
	278	#ifdef HAS_GETTIMEOFDAY
	279
	280	void
	281	gettimeofday()
	282	PREINIT:
	283	struct timeval Tp;
	284	PPCODE:
	285	int status;
	286	status = gettimeofday (&Tp, NULL);
	287	if (GIMME == G_ARRAY) {
	288	EXTEND(sp, 2);
	289	PUSHs(sv_2mortal(newSViv(Tp.tv_sec)));
	290	PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
	291	} else {
	292	EXTEND(sp, 1);
	293	PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / 1000000.0))));
	294	}
	295
3c72ec00	296	NV
dcf686c9	297	time()
	298	PREINIT:
	299	struct timeval Tp;
	300	CODE:
	301	int status;
	302	status = gettimeofday (&Tp, NULL);
	303	RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.);
	304	OUTPUT:
	305	RETVAL
	306
	307	#endif
	308
3c72ec00	309	#if defined(HAS_GETITIMER) && defined(HAS_SETITIMER)
	310
	311	#define TV2NV(tv) ((NV)((tv).tv_sec) + 0.000001 * (NV)((tv).tv_usec))
	312
	313	void
	314	setitimer(which, seconds, interval = 0)
	315	int which
	316	NV seconds
	317	NV interval
	318	PREINIT:
	319	struct itimerval newit;
	320	struct itimerval oldit;
	321	PPCODE:
	322	newit.it_value.tv_sec = seconds;
	323	newit.it_value.tv_usec =
	324	(seconds - (NV)newit.it_value.tv_sec) * 1000000.0;
	325	newit.it_interval.tv_sec = interval;
	326	newit.it_interval.tv_usec =
	327	(interval - (NV)newit.it_interval.tv_sec) * 1000000.0;
	328	if (setitimer(which, &newit, &oldit) == 0) {
	329	EXTEND(sp, 1);
	330	PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_value))));
	331	if (GIMME == G_ARRAY) {
	332	EXTEND(sp, 1);
	333	PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_interval))));
	334	}
	335	}
	336
	337	void
	338	getitimer(which)
	339	int which
	340	PREINIT:
	341	struct itimerval nowit;
	342	PPCODE:
	343	if (getitimer(which, &nowit) == 0) {
	344	EXTEND(sp, 1);
	345	PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_value))));
	346	if (GIMME == G_ARRAY) {
	347	EXTEND(sp, 1);
	348	PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_interval))));
	349	}
	350	}
	351
	352	#endif
	353
dcf686c9	354	# $Id: HiRes.xs,v 1.11 1999/03/16 02:27:38 wegscd Exp wegscd $
	355
	356	# $Log: HiRes.xs,v $
	357	# Revision 1.11 1999/03/16 02:27:38 wegscd
	358	# Add U2time, NVtime. Fix symbols for static link.
	359	#
	360	# Revision 1.10 1998/09/30 02:36:25 wegscd
	361	# Add VMS changes.
	362	#
	363	# Revision 1.9 1998/07/07 02:42:06 wegscd
	364	# Win32 usleep()
	365	#
	366	# Revision 1.8 1998/07/02 01:47:26 wegscd
	367	# Add Win32 code for gettimeofday.
	368	#
	369	# Revision 1.7 1997/11/13 02:08:12 wegscd
	370	# Add missing EXTEND in gettimeofday() scalar code.
	371	#
	372	# Revision 1.6 1997/11/11 02:32:35 wegscd
	373	# Do something useful when calling gettimeofday() in a scalar context.
	374	# The patch is courtesy of Gisle Aas.
	375	#
	376	# Revision 1.5 1997/11/06 03:10:47 wegscd
	377	# Fake ualarm() if we have setitimer.
	378	#
	379	# Revision 1.4 1997/11/05 05:41:23 wegscd
	380	# Turn prototypes ON (suggested by Gisle Aas)
	381	#
	382	# Revision 1.3 1997/10/13 20:56:15 wegscd
	383	# Add PROTOTYPES: DISABLE
	384	#
	385	# Revision 1.2 1997/05/23 01:01:38 wegscd
	386	# Conditional compilation, depending on what the OS gives us.
	387	#
	388	# Revision 1.1 1996/09/03 18:26:35 wegscd
	389	# Initial revision
	390	#
	391	#