#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 HAS_SELECT
# ifdef I_SYS_SELECT
# include <sys/select.h>
# endif
#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 */
#ifdef __GNUC__
#define Const64(x) x##LL
#else
#define Const64(x) x##i64
#endif
#define EPOCH_BIAS Const64(116444736000000000)
/* 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) / Const64(10000000));
/* microseconds remaining */
tp->tv_usec = (long)((ft.ft_i64 / Const64(10)) % Const64(1000000));
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$ediv(&div,v,",&rem);
if (VMSERR(iss)) lib$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(PTR2IV(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((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 = 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 = (UV)(1E6 * (seconds - (UV)seconds));
if (seconds >= 1.0)
sleep((U32)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", (IV)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
#
#
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