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[p5sagit/p5-mst-13.2.git] / ext / Time / HiRes / HiRes.xs
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f8daf111 1/*
2 *
3 * Copyright (c) 1996-2002 Douglas E. Wegscheid. All rights reserved.
4 *
5 * Copyright (c) 2002,2003,2004,2005 Jarkko Hietaniemi. All rights reserved.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the same terms as Perl itself.
9 */
10
dcf686c9 11#ifdef __cplusplus
12extern "C" {
13#endif
0225372c 14#define PERL_NO_GET_CONTEXT
dcf686c9 15#include "EXTERN.h"
16#include "perl.h"
17#include "XSUB.h"
1fbb4de4 18#include "ppport.h"
4ed0e2d4 19#if defined(__CYGWIN__) && defined(HAS_W32API_WINDOWS_H)
20# include <w32api/windows.h>
21# define CYGWIN_WITH_W32API
22#endif
dcf686c9 23#ifdef WIN32
4ed0e2d4 24# include <time.h>
dcf686c9 25#else
4ed0e2d4 26# include <sys/time.h>
dcf686c9 27#endif
36df99d6 28#ifdef HAS_SELECT
29# ifdef I_SYS_SELECT
30# include <sys/select.h>
31# endif
32#endif
ced84e60 33#if defined(TIME_HIRES_CLOCK_GETTIME_SYSCALL) || defined(TIME_HIRES_CLOCK_GETRES_SYSCALL)
34#include <syscall.h>
35#endif
dcf686c9 36#ifdef __cplusplus
37}
38#endif
39
1fbb4de4 40#ifndef PerlProc_pause
41# define PerlProc_pause() Pause()
3f2ee006 42#endif
43
1fbb4de4 44#ifdef HAS_PAUSE
45# define Pause pause
3f2ee006 46#else
27da23d5 47# undef Pause /* In case perl.h did it already. */
64a7a97c 48# define Pause() sleep(~0) /* Zzz for a long time. */
3f2ee006 49#endif
50
51/* Though the cpp define ITIMER_VIRTUAL is available the functionality
4ed0e2d4 52 * is not supported in Cygwin as of August 2004, ditto for Win32.
3f2ee006 53 * Neither are ITIMER_PROF or ITIMER_REALPROF implemented. --jhi
54 */
55#if defined(__CYGWIN__) || defined(WIN32)
56# undef ITIMER_VIRTUAL
57# undef ITIMER_PROF
58# undef ITIMER_REALPROF
59#endif
60
98b50af3 61/* 5.004 doesn't define PL_sv_undef */
62#ifndef ATLEASTFIVEOHOHFIVE
4ed0e2d4 63# ifndef PL_sv_undef
64# define PL_sv_undef sv_undef
65# endif
3c72ec00 66#endif
3c72ec00 67
82cbdcc3 68#if defined(TIME_HIRES_CLOCK_GETTIME) && defined(_STRUCT_ITIMERSPEC)
69
70/* HP-UX has CLOCK_XXX values but as enums, not as defines.
71 * The only way to detect these would be to test compile for each. */
72# ifdef __hpux
73# define CLOCK_REALTIME CLOCK_REALTIME
74# define CLOCK_VIRTUAL CLOCK_VIRTUAL
75# define CLOCK_PROFILE CLOCK_PROFILE
76# endif /* # ifdef __hpux */
77
78#endif /* #if defined(TIME_HIRES_CLOCK_GETTIME) && defined(_STRUCT_ITIMERSPEC) */
3c72ec00 79
4ed0e2d4 80#if defined(WIN32) || defined(CYGWIN_WITH_W32API)
0225372c 81
82#ifndef HAS_GETTIMEOFDAY
83# define HAS_GETTIMEOFDAY
84#endif
fd44fdfd 85
6e3b076d 86/* shows up in winsock.h?
87struct timeval {
88 long tv_sec;
89 long tv_usec;
90}
91*/
92
fd44fdfd 93typedef union {
94 unsigned __int64 ft_i64;
95 FILETIME ft_val;
96} FT_t;
97
0225372c 98#define MY_CXT_KEY "Time::HiRes_" XS_VERSION
99
100typedef struct {
101 unsigned long run_count;
102 unsigned __int64 base_ticks;
103 unsigned __int64 tick_frequency;
104 FT_t base_systime_as_filetime;
4ed0e2d4 105 unsigned __int64 reset_time;
0225372c 106} my_cxt_t;
107
108START_MY_CXT
109
6e3b076d 110/* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */
fd44fdfd 111#ifdef __GNUC__
4ed0e2d4 112# define Const64(x) x##LL
fd44fdfd 113#else
4ed0e2d4 114# define Const64(x) x##i64
fd44fdfd 115#endif
fd44fdfd 116#define EPOCH_BIAS Const64(116444736000000000)
117
118/* NOTE: This does not compute the timezone info (doing so can be expensive,
119 * and appears to be unsupported even by glibc) */
0225372c 120
121/* dMY_CXT needs a Perl context and we don't want to call PERL_GET_CONTEXT
122 for performance reasons */
123
124#undef gettimeofday
125#define gettimeofday(tp, not_used) _gettimeofday(aTHX_ tp, not_used)
126
d8cb5b61 127/* If the performance counter delta drifts more than 0.5 seconds from the
128 * system time then we recalibrate to the system time. This means we may
c1dc6e7c 129 * move *backwards* in time! */
4ed0e2d4 130#define MAX_PERF_COUNTER_SKEW Const64(5000000) /* 0.5 seconds */
c1dc6e7c 131
4ed0e2d4 132/* Reset reading from the performance counter every five minutes.
133 * Many PC clocks just seem to be so bad. */
134#define MAX_PERF_COUNTER_TICKS Const64(300000000) /* 300 seconds */
c1dc6e7c 135
0225372c 136static int
137_gettimeofday(pTHX_ struct timeval *tp, void *not_used)
fd44fdfd 138{
0225372c 139 dMY_CXT;
140
141 unsigned __int64 ticks;
fd44fdfd 142 FT_t ft;
143
4ed0e2d4 144 if (MY_CXT.run_count++ == 0 ||
145 MY_CXT.base_systime_as_filetime.ft_i64 > MY_CXT.reset_time) {
146 QueryPerformanceFrequency((LARGE_INTEGER*)&MY_CXT.tick_frequency);
147 QueryPerformanceCounter((LARGE_INTEGER*)&MY_CXT.base_ticks);
148 GetSystemTimeAsFileTime(&MY_CXT.base_systime_as_filetime.ft_val);
149 ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64;
150 MY_CXT.reset_time = ft.ft_i64 + MAX_PERF_COUNTER_TICKS;
151 }
152 else {
c1dc6e7c 153 __int64 diff;
0225372c 154 QueryPerformanceCounter((LARGE_INTEGER*)&ticks);
155 ticks -= MY_CXT.base_ticks;
156 ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64
b6136f41 157 + Const64(10000000) * (ticks / MY_CXT.tick_frequency)
158 +(Const64(10000000) * (ticks % MY_CXT.tick_frequency)) / MY_CXT.tick_frequency;
c1dc6e7c 159 diff = ft.ft_i64 - MY_CXT.base_systime_as_filetime.ft_i64;
4ed0e2d4 160 if (diff < -MAX_PERF_COUNTER_SKEW || diff > MAX_PERF_COUNTER_SKEW) {
161 MY_CXT.base_ticks += ticks;
162 GetSystemTimeAsFileTime(&MY_CXT.base_systime_as_filetime.ft_val);
163 ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64;
c1dc6e7c 164 }
0225372c 165 }
fd44fdfd 166
167 /* seconds since epoch */
168 tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / Const64(10000000));
169
170 /* microseconds remaining */
171 tp->tv_usec = (long)((ft.ft_i64 / Const64(10)) % Const64(1000000));
172
173 return 0;
174}
6e3b076d 175#endif
fd44fdfd 176
0225372c 177#if defined(WIN32) && !defined(ATLEASTFIVEOHOHFIVE)
178static unsigned int
179sleep(unsigned int t)
180{
181 Sleep(t*1000);
182 return 0;
183}
184#endif
185
dcf686c9 186#if !defined(HAS_GETTIMEOFDAY) && defined(VMS)
187#define HAS_GETTIMEOFDAY
188
9b6f56ad 189#include <lnmdef.h>
dcf686c9 190#include <time.h> /* gettimeofday */
191#include <stdlib.h> /* qdiv */
192#include <starlet.h> /* sys$gettim */
193#include <descrip.h>
3785778e 194#ifdef __VAX
195#include <lib$routines.h> /* lib$ediv() */
196#endif
dcf686c9 197
198/*
199 VMS binary time is expressed in 100 nano-seconds since
200 system base time which is 17-NOV-1858 00:00:00.00
201*/
202
203#define DIV_100NS_TO_SECS 10000000L
204#define DIV_100NS_TO_USECS 10L
205
206/*
207 gettimeofday is supposed to return times since the epoch
208 so need to determine this in terms of VMS base time
209*/
210static $DESCRIPTOR(dscepoch,"01-JAN-1970 00:00:00.00");
211
5cdb7193 212#ifdef __VAX
3785778e 213static long base_adjust[2]={0L,0L};
5cdb7193 214#else
dcf686c9 215static __int64 base_adjust=0;
5cdb7193 216#endif
dcf686c9 217
9b6f56ad 218/*
219
220 If we don't have gettimeofday, then likely we are on a VMS machine that
221 operates on local time rather than UTC...so we have to zone-adjust.
222 This code gleefully swiped from VMS.C
223
224*/
225/* method used to handle UTC conversions:
226 * 1 == CRTL gmtime(); 2 == SYS$TIMEZONE_DIFFERENTIAL; 3 == no correction
227 */
228static int gmtime_emulation_type;
229/* number of secs to add to UTC POSIX-style time to get local time */
230static long int utc_offset_secs;
231static struct dsc$descriptor_s fildevdsc =
232 { 12, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$FILE_DEV" };
233static struct dsc$descriptor_s *fildev[] = { &fildevdsc, NULL };
234
235static time_t toutc_dst(time_t loc) {
236 struct tm *rsltmp;
237
238 if ((rsltmp = localtime(&loc)) == NULL) return -1;
239 loc -= utc_offset_secs;
240 if (rsltmp->tm_isdst) loc -= 3600;
241 return loc;
242}
243
244static time_t toloc_dst(time_t utc) {
245 struct tm *rsltmp;
246
247 utc += utc_offset_secs;
248 if ((rsltmp = localtime(&utc)) == NULL) return -1;
249 if (rsltmp->tm_isdst) utc += 3600;
250 return utc;
251}
252
253#define _toutc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \
254 ((gmtime_emulation_type || timezone_setup()), \
255 (gmtime_emulation_type == 1 ? toutc_dst(secs) : \
256 ((secs) - utc_offset_secs))))
257
258#define _toloc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \
259 ((gmtime_emulation_type || timezone_setup()), \
260 (gmtime_emulation_type == 1 ? toloc_dst(secs) : \
261 ((secs) + utc_offset_secs))))
262
263static int
264timezone_setup(void)
265{
266 struct tm *tm_p;
267
268 if (gmtime_emulation_type == 0) {
269 int dstnow;
270 time_t base = 15 * 86400; /* 15jan71; to avoid month/year ends between */
271 /* results of calls to gmtime() and localtime() */
272 /* for same &base */
273
274 gmtime_emulation_type++;
275 if ((tm_p = gmtime(&base)) == NULL) { /* CRTL gmtime() is a fake */
276 char off[LNM$C_NAMLENGTH+1];;
277
278 gmtime_emulation_type++;
279 if (!Perl_vmstrnenv("SYS$TIMEZONE_DIFFERENTIAL",off,0,fildev,0)) {
280 gmtime_emulation_type++;
281 utc_offset_secs = 0;
282 Perl_warn(aTHX_ "no UTC offset information; assuming local time is UTC");
283 }
284 else { utc_offset_secs = atol(off); }
285 }
286 else { /* We've got a working gmtime() */
287 struct tm gmt, local;
288
289 gmt = *tm_p;
290 tm_p = localtime(&base);
291 local = *tm_p;
292 utc_offset_secs = (local.tm_mday - gmt.tm_mday) * 86400;
293 utc_offset_secs += (local.tm_hour - gmt.tm_hour) * 3600;
294 utc_offset_secs += (local.tm_min - gmt.tm_min) * 60;
295 utc_offset_secs += (local.tm_sec - gmt.tm_sec);
296 }
297 }
298 return 1;
299}
300
301
dcf686c9 302int
303gettimeofday (struct timeval *tp, void *tpz)
304{
305 long ret;
5cdb7193 306#ifdef __VAX
3785778e 307 long quad[2];
308 long quad1[2];
309 long div_100ns_to_secs;
310 long div_100ns_to_usecs;
311 long quo,rem;
312 long quo1,rem1;
5cdb7193 313#else
dcf686c9 314 __int64 quad;
315 __qdiv_t ans1,ans2;
5cdb7193 316#endif
dcf686c9 317/*
318 In case of error, tv_usec = 0 and tv_sec = VMS condition code.
319 The return from function is also set to -1.
320 This is not exactly as per the manual page.
321*/
322
323 tp->tv_usec = 0;
324
3785778e 325#ifdef __VAX
326 if (base_adjust[0]==0 && base_adjust[1]==0) {
327#else
dcf686c9 328 if (base_adjust==0) { /* Need to determine epoch adjustment */
3785778e 329#endif
dcf686c9 330 ret=sys$bintim(&dscepoch,&base_adjust);
331 if (1 != (ret &&1)) {
332 tp->tv_sec = ret;
333 return -1;
334 }
335 }
336
337 ret=sys$gettim(&quad); /* Get VMS system time */
338 if ((1 && ret) == 1) {
5cdb7193 339#ifdef __VAX
3785778e 340 quad[0] -= base_adjust[0]; /* convert to epoch offset */
341 quad[1] -= base_adjust[1]; /* convert 2nd half of quadword */
342 div_100ns_to_secs = DIV_100NS_TO_SECS;
343 div_100ns_to_usecs = DIV_100NS_TO_USECS;
344 lib$ediv(&div_100ns_to_secs,&quad,&quo,&rem);
345 quad1[0] = rem;
346 quad1[1] = 0L;
347 lib$ediv(&div_100ns_to_usecs,&quad1,&quo1,&rem1);
348 tp->tv_sec = quo; /* Whole seconds */
349 tp->tv_usec = quo1; /* Micro-seconds */
5cdb7193 350#else
3785778e 351 quad -= base_adjust; /* convert to epoch offset */
dcf686c9 352 ans1=qdiv(quad,DIV_100NS_TO_SECS);
353 ans2=qdiv(ans1.rem,DIV_100NS_TO_USECS);
354 tp->tv_sec = ans1.quot; /* Whole seconds */
355 tp->tv_usec = ans2.quot; /* Micro-seconds */
3785778e 356#endif
dcf686c9 357 } else {
358 tp->tv_sec = ret;
359 return -1;
360 }
9b6f56ad 361# ifdef VMSISH_TIME
362# ifdef RTL_USES_UTC
363 if (VMSISH_TIME) tp->tv_sec = _toloc(tp->tv_sec);
364# else
365 if (!VMSISH_TIME) tp->tv_sec = _toutc(tp->tv_sec);
366# endif
367# endif
dcf686c9 368 return 0;
369}
370#endif
371
3f2ee006 372
046e3f33 373 /* Do not use H A S _ N A N O S L E E P
70cf0185 374 * so that Perl Configure doesn't scan for it (and pull in -lrt and
375 * the like which are not usually good ideas for the default Perl).
e5433ad8 376 * (We are part of the core perl now.)
046e3f33 377 * The TIME_HIRES_NANOSLEEP is set by Makefile.PL. */
378#if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP)
3f2ee006 379#define HAS_USLEEP
3d0346a5 380#define usleep hrt_nanosleep /* could conflict with ncurses for static build */
3f2ee006 381
382void
3d0346a5 383hrt_nanosleep(unsigned long usec) /* This is used to emulate usleep. */
3f2ee006 384{
385 struct timespec res;
386 res.tv_sec = usec/1000/1000;
387 res.tv_nsec = ( usec - res.tv_sec*1000*1000 ) * 1000;
388 nanosleep(&res, NULL);
389}
3f2ee006 390
44d3ce20 391#endif /* #if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP) */
3f2ee006 392
dcf686c9 393#if !defined(HAS_USLEEP) && defined(HAS_SELECT)
394#ifndef SELECT_IS_BROKEN
395#define HAS_USLEEP
396#define usleep hrt_usleep /* could conflict with ncurses for static build */
397
398void
399hrt_usleep(unsigned long usec)
400{
401 struct timeval tv;
402 tv.tv_sec = 0;
403 tv.tv_usec = usec;
404 select(0, (Select_fd_set_t)NULL, (Select_fd_set_t)NULL,
405 (Select_fd_set_t)NULL, &tv);
406}
407#endif
44d3ce20 408#endif /* #if !defined(HAS_USLEEP) && defined(HAS_SELECT) */
dcf686c9 409
410#if !defined(HAS_USLEEP) && defined(WIN32)
411#define HAS_USLEEP
412#define usleep hrt_usleep /* could conflict with ncurses for static build */
413
414void
415hrt_usleep(unsigned long usec)
416{
417 long msec;
418 msec = usec / 1000;
419 Sleep (msec);
420}
44d3ce20 421#endif /* #if !defined(HAS_USLEEP) && defined(WIN32) */
dcf686c9 422
70cf0185 423#if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP)
e5433ad8 424#define HAS_USLEEP
425#define usleep hrt_usleep /* could conflict with ncurses for static build */
426
427void
428hrt_usleep(unsigned long usec)
429{
170c5524 430 struct timespec ts1;
431 ts1.tv_sec = usec * 1000; /* Ignoring wraparound. */
432 ts1.tv_nsec = 0;
433 nanosleep(&ts1, NULL);
e5433ad8 434}
435
b311af62 436#endif /* #if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP) */
e5433ad8 437
438#if !defined(HAS_USLEEP) && defined(HAS_POLL)
439#define HAS_USLEEP
440#define usleep hrt_usleep /* could conflict with ncurses for static build */
441
442void
443hrt_usleep(unsigned long usec)
444{
445 int msec = usec / 1000;
446 poll(0, 0, msec);
447}
448
449#endif /* #if !defined(HAS_USLEEP) && defined(HAS_POLL) */
dcf686c9 450
451#if !defined(HAS_UALARM) && defined(HAS_SETITIMER)
452#define HAS_UALARM
453#define ualarm hrt_ualarm /* could conflict with ncurses for static build */
454
455int
456hrt_ualarm(int usec, int interval)
457{
458 struct itimerval itv;
459 itv.it_value.tv_sec = usec / 1000000;
460 itv.it_value.tv_usec = usec % 1000000;
461 itv.it_interval.tv_sec = interval / 1000000;
462 itv.it_interval.tv_usec = interval % 1000000;
463 return setitimer(ITIMER_REAL, &itv, 0);
464}
44d3ce20 465#endif /* #if !defined(HAS_UALARM) && defined(HAS_SETITIMER) */
dcf686c9 466
ca40fe49 467#if !defined(HAS_UALARM) && defined(VMS)
468#define HAS_UALARM
469#define ualarm vms_ualarm
470
471#include <lib$routines.h>
472#include <ssdef.h>
473#include <starlet.h>
474#include <descrip.h>
475#include <signal.h>
476#include <jpidef.h>
477#include <psldef.h>
478
479#define VMSERR(s) (!((s)&1))
480
481static void
482us_to_VMS(useconds_t mseconds, unsigned long v[])
483{
484 int iss;
485 unsigned long qq[2];
486
487 qq[0] = mseconds;
488 qq[1] = 0;
489 v[0] = v[1] = 0;
490
491 iss = lib$addx(qq,qq,qq);
492 if (VMSERR(iss)) lib$signal(iss);
493 iss = lib$subx(v,qq,v);
494 if (VMSERR(iss)) lib$signal(iss);
495 iss = lib$addx(qq,qq,qq);
496 if (VMSERR(iss)) lib$signal(iss);
497 iss = lib$subx(v,qq,v);
498 if (VMSERR(iss)) lib$signal(iss);
499 iss = lib$subx(v,qq,v);
500 if (VMSERR(iss)) lib$signal(iss);
501}
502
503static int
504VMS_to_us(unsigned long v[])
505{
506 int iss;
507 unsigned long div=10,quot, rem;
508
509 iss = lib$ediv(&div,v,&quot,&rem);
510 if (VMSERR(iss)) lib$signal(iss);
511
512 return quot;
513}
514
515typedef unsigned short word;
516typedef struct _ualarm {
517 int function;
518 int repeat;
519 unsigned long delay[2];
520 unsigned long interval[2];
521 unsigned long remain[2];
522} Alarm;
523
524
525static int alarm_ef;
526static Alarm *a0, alarm_base;
527#define UAL_NULL 0
528#define UAL_SET 1
529#define UAL_CLEAR 2
530#define UAL_ACTIVE 4
531static void ualarm_AST(Alarm *a);
532
533static int
534vms_ualarm(int mseconds, int interval)
535{
536 Alarm *a, abase;
537 struct item_list3 {
538 word length;
539 word code;
540 void *bufaddr;
541 void *retlenaddr;
542 } ;
543 static struct item_list3 itmlst[2];
544 static int first = 1;
545 unsigned long asten;
546 int iss, enabled;
547
548 if (first) {
549 first = 0;
550 itmlst[0].code = JPI$_ASTEN;
551 itmlst[0].length = sizeof(asten);
552 itmlst[0].retlenaddr = NULL;
553 itmlst[1].code = 0;
554 itmlst[1].length = 0;
555 itmlst[1].bufaddr = NULL;
556 itmlst[1].retlenaddr = NULL;
557
558 iss = lib$get_ef(&alarm_ef);
559 if (VMSERR(iss)) lib$signal(iss);
560
561 a0 = &alarm_base;
562 a0->function = UAL_NULL;
563 }
564 itmlst[0].bufaddr = &asten;
565
566 iss = sys$getjpiw(0,0,0,itmlst,0,0,0);
567 if (VMSERR(iss)) lib$signal(iss);
568 if (!(asten&0x08)) return -1;
569
570 a = &abase;
571 if (mseconds) {
572 a->function = UAL_SET;
573 } else {
574 a->function = UAL_CLEAR;
575 }
576
577 us_to_VMS(mseconds, a->delay);
578 if (interval) {
579 us_to_VMS(interval, a->interval);
580 a->repeat = 1;
581 } else
582 a->repeat = 0;
583
584 iss = sys$clref(alarm_ef);
585 if (VMSERR(iss)) lib$signal(iss);
586
587 iss = sys$dclast(ualarm_AST,a,0);
588 if (VMSERR(iss)) lib$signal(iss);
589
590 iss = sys$waitfr(alarm_ef);
591 if (VMSERR(iss)) lib$signal(iss);
592
593 if (a->function == UAL_ACTIVE)
594 return VMS_to_us(a->remain);
595 else
596 return 0;
597}
598
599
600
601static void
602ualarm_AST(Alarm *a)
603{
604 int iss;
605 unsigned long now[2];
606
607 iss = sys$gettim(now);
608 if (VMSERR(iss)) lib$signal(iss);
609
610 if (a->function == UAL_SET || a->function == UAL_CLEAR) {
611 if (a0->function == UAL_ACTIVE) {
612 iss = sys$cantim(a0,PSL$C_USER);
613 if (VMSERR(iss)) lib$signal(iss);
614
615 iss = lib$subx(a0->remain, now, a->remain);
616 if (VMSERR(iss)) lib$signal(iss);
617
618 if (a->remain[1] & 0x80000000)
619 a->remain[0] = a->remain[1] = 0;
620 }
621
622 if (a->function == UAL_SET) {
623 a->function = a0->function;
624 a0->function = UAL_ACTIVE;
625 a0->repeat = a->repeat;
626 if (a0->repeat) {
627 a0->interval[0] = a->interval[0];
628 a0->interval[1] = a->interval[1];
629 }
630 a0->delay[0] = a->delay[0];
631 a0->delay[1] = a->delay[1];
632
633 iss = lib$subx(now, a0->delay, a0->remain);
634 if (VMSERR(iss)) lib$signal(iss);
635
636 iss = sys$setimr(0,a0->delay,ualarm_AST,a0);
637 if (VMSERR(iss)) lib$signal(iss);
638 } else {
639 a->function = a0->function;
640 a0->function = UAL_NULL;
641 }
642 iss = sys$setef(alarm_ef);
643 if (VMSERR(iss)) lib$signal(iss);
644 } else if (a->function == UAL_ACTIVE) {
645 if (a->repeat) {
646 iss = lib$subx(now, a->interval, a->remain);
647 if (VMSERR(iss)) lib$signal(iss);
648
649 iss = sys$setimr(0,a->interval,ualarm_AST,a);
650 if (VMSERR(iss)) lib$signal(iss);
651 } else {
652 a->function = UAL_NULL;
653 }
654 iss = sys$wake(0,0);
655 if (VMSERR(iss)) lib$signal(iss);
656 lib$signal(SS$_ASTFLT);
657 } else {
658 lib$signal(SS$_BADPARAM);
659 }
660}
661
44d3ce20 662#endif /* #if !defined(HAS_UALARM) && defined(VMS) */
ca40fe49 663
dcf686c9 664#ifdef HAS_GETTIMEOFDAY
665
a2e20b18 666static int
0225372c 667myU2time(pTHX_ UV *ret)
dcf686c9 668{
669 struct timeval Tp;
670 int status;
6e3b076d 671 status = gettimeofday (&Tp, NULL);
dcf686c9 672 ret[0] = Tp.tv_sec;
673 ret[1] = Tp.tv_usec;
a2e20b18 674 return status;
dcf686c9 675}
676
3c72ec00 677static NV
dcf686c9 678myNVtime()
679{
0225372c 680#ifdef WIN32
4ed0e2d4 681 dTHX;
0225372c 682#endif
dcf686c9 683 struct timeval Tp;
684 int status;
6e3b076d 685 status = gettimeofday (&Tp, NULL);
a2e20b18 686 return status == 0 ? Tp.tv_sec + (Tp.tv_usec / 1000000.) : -1.0;
dcf686c9 687}
688
44d3ce20 689#endif /* #ifdef HAS_GETTIMEOFDAY */
dcf686c9 690
82cbdcc3 691#include "const-c.inc"
692
dcf686c9 693MODULE = Time::HiRes PACKAGE = Time::HiRes
694
695PROTOTYPES: ENABLE
696
697BOOT:
0225372c 698{
699#ifdef MY_CXT_KEY
700 MY_CXT_INIT;
701#endif
3f2ee006 702#ifdef ATLEASTFIVEOHOHFIVE
dcf686c9 703#ifdef HAS_GETTIMEOFDAY
0225372c 704 {
0225372c 705 hv_store(PL_modglobal, "Time::NVtime", 12, newSViv(PTR2IV(myNVtime)), 0);
06252d99 706 hv_store(PL_modglobal, "Time::U2time", 12, newSViv(PTR2IV(myU2time)), 0);
0225372c 707 }
708#endif
dcf686c9 709#endif
0225372c 710}
711
712#if defined(USE_ITHREADS) && defined(MY_CXT_KEY)
713
714void
715CLONE(...)
716 CODE:
717 MY_CXT_CLONE;
718
3f2ee006 719#endif
dcf686c9 720
98b50af3 721INCLUDE: const-xs.inc
3c72ec00 722
52d72fba 723#if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY)
dcf686c9 724
92bc48ca 725NV
dcf686c9 726usleep(useconds)
92bc48ca 727 NV useconds
52d72fba 728 PREINIT:
729 struct timeval Ta, Tb;
730 CODE:
6e3b076d 731 gettimeofday(&Ta, NULL);
52d72fba 732 if (items > 0) {
92bc48ca 733 if (useconds > 1E6) {
734 IV seconds = (IV) (useconds / 1E6);
f7916ddb 735 /* If usleep() has been implemented using setitimer()
736 * then this contortion is unnecessary-- but usleep()
737 * may be implemented in some other way, so let's contort. */
738 if (seconds) {
739 sleep(seconds);
740 useconds -= 1E6 * seconds;
741 }
742 } else if (useconds < 0.0)
743 croak("Time::HiRes::usleep(%"NVgf"): negative time not invented yet", useconds);
9a2ac92c 744 usleep((U32)useconds);
52d72fba 745 } else
746 PerlProc_pause();
6e3b076d 747 gettimeofday(&Tb, NULL);
92bc48ca 748#if 0
749 printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
750#endif
751 RETVAL = 1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec);
dcf686c9 752
52d72fba 753 OUTPUT:
754 RETVAL
755
44d3ce20 756#if defined(TIME_HIRES_NANOSLEEP)
757
758NV
170c5524 759nanosleep(nsec)
760 NV nsec
44d3ce20 761 PREINIT:
170c5524 762 int status = -1;
44d3ce20 763 struct timeval Ta, Tb;
764 CODE:
765 gettimeofday(&Ta, NULL);
766 if (items > 0) {
170c5524 767 struct timespec ts1;
768 if (nsec > 1E9) {
769 IV sec = (IV) (nsec / 1E9);
770 if (sec) {
771 sleep(sec);
772 nsec -= 1E9 * sec;
44d3ce20 773 }
170c5524 774 } else if (nsec < 0.0)
775 croak("Time::HiRes::nanosleep(%"NVgf"): negative time not invented yet", nsec);
776 ts1.tv_sec = (IV) (nsec / 1E9);
777 ts1.tv_nsec = (IV) nsec - ts1.tv_sec * 1E9;
778 status = nanosleep(&ts1, NULL);
779 } else {
44d3ce20 780 PerlProc_pause();
170c5524 781 status = 0;
782 }
44d3ce20 783 gettimeofday(&Tb, NULL);
170c5524 784 RETVAL = status == 0 ? 1E3*(1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec)) : -1;
44d3ce20 785
786 OUTPUT:
787 RETVAL
788
ced84e60 789#else /* #if defined(TIME_HIRES_NANOSLEEP) */
790
791NV
170c5524 792nanosleep(nsec)
793 NV nsec
ced84e60 794 CODE:
795 croak("Time::HiRes::nanosleep(): unimplemented in this platform");
796 RETVAL = 0.0;
797
44d3ce20 798#endif /* #if defined(TIME_HIRES_NANOSLEEP) */
799
52d72fba 800NV
f9d00e57 801sleep(...)
52d72fba 802 PREINIT:
803 struct timeval Ta, Tb;
dcf686c9 804 CODE:
6e3b076d 805 gettimeofday(&Ta, NULL);
92bc48ca 806 if (items > 0) {
807 NV seconds = SvNV(ST(0));
f7916ddb 808 if (seconds >= 0.0) {
7c436af3 809 UV useconds = (UV)(1E6 * (seconds - (UV)seconds));
4880edd6 810 if (seconds >= 1.0)
9a2ac92c 811 sleep((U32)seconds);
db0b859f 812 if ((IV)useconds < 0) {
813#if defined(__sparc64__) && defined(__GNUC__)
814 /* Sparc64 gcc 2.95.3 (e.g. on NetBSD) has a bug
815 * where (0.5 - (UV)(0.5)) will under certain
816 * circumstances (if the double is cast to UV more
817 * than once?) evaluate to -0.5, instead of 0.5. */
818 useconds = -(IV)useconds;
44d3ce20 819#endif /* #if defined(__sparc64__) && defined(__GNUC__) */
db0b859f 820 if ((IV)useconds < 0)
821 croak("Time::HiRes::sleep(%"NVgf"): internal error: useconds < 0 (unsigned %"UVuf" signed %"IVdf")", seconds, useconds, (IV)useconds);
822 }
f7916ddb 823 usleep(useconds);
824 } else
825 croak("Time::HiRes::sleep(%"NVgf"): negative time not invented yet", seconds);
92bc48ca 826 } else
f9d00e57 827 PerlProc_pause();
6e3b076d 828 gettimeofday(&Tb, NULL);
92bc48ca 829#if 0
830 printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
831#endif
52d72fba 832 RETVAL = (NV)(Tb.tv_sec-Ta.tv_sec)+0.000001*(NV)(Tb.tv_usec-Ta.tv_usec);
833
834 OUTPUT:
835 RETVAL
dcf686c9 836
ced84e60 837#else /* #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY) */
838
839NV
840usleep(useconds)
841 NV useconds
842 CODE:
843 croak("Time::HiRes::usleep(): unimplemented in this platform");
844 RETVAL = 0.0;
845
44d3ce20 846#endif /* #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY) */
dcf686c9 847
848#ifdef HAS_UALARM
849
3de7a4ec 850int
dcf686c9 851ualarm(useconds,interval=0)
852 int useconds
853 int interval
f7916ddb 854 CODE:
855 if (useconds < 0 || interval < 0)
3de7a4ec 856 croak("Time::HiRes::ualarm(%d, %d): negative time not invented yet", useconds, interval);
f7916ddb 857 RETVAL = ualarm(useconds, interval);
dcf686c9 858
f7916ddb 859 OUTPUT:
860 RETVAL
861
862NV
863alarm(seconds,interval=0)
864 NV seconds
865 NV interval
dcf686c9 866 CODE:
f7916ddb 867 if (seconds < 0.0 || interval < 0.0)
868 croak("Time::HiRes::alarm(%"NVgf", %"NVgf"): negative time not invented yet", seconds, interval);
869 RETVAL = (NV)ualarm(seconds * 1000000,
870 interval * 1000000) / 1E6;
dcf686c9 871
c6c619a9 872 OUTPUT:
873 RETVAL
874
ced84e60 875#else
876
877int
878ualarm(useconds,interval=0)
879 int useconds
880 int interval
881 CODE:
882 croak("Time::HiRes::ualarm(): unimplemented in this platform");
883 RETVAL = -1;
884
885NV
886alarm(seconds,interval=0)
887 NV seconds
888 NV interval
889 CODE:
890 croak("Time::HiRes::alarm(): unimplemented in this platform");
891 RETVAL = 0.0;
892
44d3ce20 893#endif /* #ifdef HAS_UALARM */
dcf686c9 894
895#ifdef HAS_GETTIMEOFDAY
db835671 896# ifdef MACOS_TRADITIONAL /* fix epoch TZ and use unsigned time_t */
897void
898gettimeofday()
899 PREINIT:
900 struct timeval Tp;
901 struct timezone Tz;
902 PPCODE:
903 int status;
6e3b076d 904 status = gettimeofday (&Tp, &Tz);
db835671 905
993164ab 906 if (status == 0) {
907 Tp.tv_sec += Tz.tz_minuteswest * 60; /* adjust for TZ */
908 if (GIMME == G_ARRAY) {
909 EXTEND(sp, 2);
910 /* Mac OS (Classic) has unsigned time_t */
911 PUSHs(sv_2mortal(newSVuv(Tp.tv_sec)));
912 PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
913 } else {
914 EXTEND(sp, 1);
915 PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / 1000000.0))));
916 }
db835671 917 }
918
919NV
920time()
921 PREINIT:
922 struct timeval Tp;
923 struct timezone Tz;
924 CODE:
925 int status;
6e3b076d 926 status = gettimeofday (&Tp, &Tz);
993164ab 927 if (status == 0) {
928 Tp.tv_sec += Tz.tz_minuteswest * 60; /* adjust for TZ */
929 RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.0);
930 } else {
931 RETVAL = -1.0;
932 }
db835671 933 OUTPUT:
934 RETVAL
dcf686c9 935
db835671 936# else /* MACOS_TRADITIONAL */
dcf686c9 937void
938gettimeofday()
939 PREINIT:
940 struct timeval Tp;
941 PPCODE:
942 int status;
6e3b076d 943 status = gettimeofday (&Tp, NULL);
993164ab 944 if (status == 0) {
945 if (GIMME == G_ARRAY) {
946 EXTEND(sp, 2);
947 PUSHs(sv_2mortal(newSViv(Tp.tv_sec)));
948 PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
949 } else {
950 EXTEND(sp, 1);
951 PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / 1000000.0))));
952 }
dcf686c9 953 }
954
3c72ec00 955NV
dcf686c9 956time()
957 PREINIT:
958 struct timeval Tp;
959 CODE:
960 int status;
6e3b076d 961 status = gettimeofday (&Tp, NULL);
993164ab 962 if (status == 0) {
963 RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.);
964 } else {
965 RETVAL = -1.0;
966 }
dcf686c9 967 OUTPUT:
968 RETVAL
969
db835671 970# endif /* MACOS_TRADITIONAL */
44d3ce20 971#endif /* #ifdef HAS_GETTIMEOFDAY */
dcf686c9 972
3c72ec00 973#if defined(HAS_GETITIMER) && defined(HAS_SETITIMER)
974
975#define TV2NV(tv) ((NV)((tv).tv_sec) + 0.000001 * (NV)((tv).tv_usec))
976
977void
978setitimer(which, seconds, interval = 0)
979 int which
980 NV seconds
981 NV interval
982 PREINIT:
983 struct itimerval newit;
984 struct itimerval oldit;
985 PPCODE:
f7916ddb 986 if (seconds < 0.0 || interval < 0.0)
436c6dd3 987 croak("Time::HiRes::setitimer(%"IVdf", %"NVgf", %"NVgf"): negative time not invented yet", (IV)which, seconds, interval);
3c72ec00 988 newit.it_value.tv_sec = seconds;
989 newit.it_value.tv_usec =
990 (seconds - (NV)newit.it_value.tv_sec) * 1000000.0;
991 newit.it_interval.tv_sec = interval;
992 newit.it_interval.tv_usec =
993 (interval - (NV)newit.it_interval.tv_sec) * 1000000.0;
994 if (setitimer(which, &newit, &oldit) == 0) {
995 EXTEND(sp, 1);
996 PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_value))));
997 if (GIMME == G_ARRAY) {
998 EXTEND(sp, 1);
999 PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_interval))));
1000 }
1001 }
1002
1003void
1004getitimer(which)
1005 int which
1006 PREINIT:
1007 struct itimerval nowit;
1008 PPCODE:
1009 if (getitimer(which, &nowit) == 0) {
1010 EXTEND(sp, 1);
1011 PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_value))));
1012 if (GIMME == G_ARRAY) {
1013 EXTEND(sp, 1);
1014 PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_interval))));
1015 }
1016 }
1017
44d3ce20 1018#endif /* #if defined(HAS_GETITIMER) && defined(HAS_SETITIMER) */
1019
ced84e60 1020#if defined(TIME_HIRES_CLOCK_GETTIME)
1021
1022NV
1023clock_gettime(clock_id = CLOCK_REALTIME)
1024 int clock_id
1025 PREINIT:
1026 struct timespec ts;
1027 int status = -1;
1028 CODE:
1029#ifdef TIME_HIRES_CLOCK_GETTIME_SYSCALL
1030 status = syscall(SYS_clock_gettime, clock_id, &ts);
1031#else
1032 status = clock_gettime(clock_id, &ts);
1033#endif
1034 RETVAL = status == 0 ? ts.tv_sec + (NV) ts.tv_nsec / (NV) 1e9 : -1;
1035
1036 OUTPUT:
1037 RETVAL
1038
1039#else /* if defined(TIME_HIRES_CLOCK_GETTIME) */
1040
1041NV
1042clock_gettime(clock_id = 0)
1043 int clock_id
1044 CODE:
1045 croak("Time::HiRes::clock_gettime(): unimplemented in this platform");
1046 RETVAL = 0.0;
1047
1048#endif /* #if defined(TIME_HIRES_CLOCK_GETTIME) */
1049
1050#if defined(TIME_HIRES_CLOCK_GETRES)
1051
1052NV
1053clock_getres(clock_id = CLOCK_REALTIME)
1054 int clock_id
1055 PREINIT:
1056 int status = -1;
1057 struct timespec ts;
1058 CODE:
1059#ifdef TIME_HIRES_CLOCK_GETRES_SYSCALL
1060 status = syscall(SYS_clock_getres, clock_id, &ts);
1061#else
1062 status = clock_getres(clock_id, &ts);
1063#endif
1064 RETVAL = status == 0 ? ts.tv_sec + (NV) ts.tv_nsec / (NV) 1e9 : -1;
1065
1066 OUTPUT:
1067 RETVAL
1068
1069#else /* if defined(TIME_HIRES_CLOCK_GETRES) */
1070
1071NV
1072clock_getres(clock_id = 0)
1073 int clock_id
1074 CODE:
1075 croak("Time::HiRes::clock_getres(): unimplemented in this platform");
1076 RETVAL = 0.0;
1077
1078#endif /* #if defined(TIME_HIRES_CLOCK_GETRES) */
1079
170c5524 1080#if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME)
1081
1082NV
1083clock_nanosleep(clock_id = CLOCK_REALTIME, sec = 0.0, flags = 0)
1084 int clock_id
1085 NV sec
1086 int flags
1087 PREINIT:
1088 int status = -1;
1089 struct timespec ts;
1090 struct timeval Ta, Tb;
1091 CODE:
1092 gettimeofday(&Ta, NULL);
1093 if (items > 1) {
1094 ts.tv_sec = (IV) sec;
1095 ts.tv_nsec = (sec - (NV) ts.tv_sec) * (NV) 1E9;
1096 status = clock_nanosleep(clock_id, flags, &ts, NULL);
1097 } else {
1098 PerlProc_pause();
1099 status = 0;
1100 }
1101 gettimeofday(&Tb, NULL);
1102 RETVAL = status == 0 ? 1E3*(1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec)) : -1;
1103
1104 OUTPUT:
1105 RETVAL
1106
1107#else /* if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME) */
1108
1109NV
1110clock_nanosleep()
1111 CODE:
1112 croak("Time::HiRes::clock_nanosleep(): unimplemented in this platform");
1113 RETVAL = 0.0;
1114
1115#endif /* #if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME) */
1116
1117#if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC)
1118
1119NV
1120clock()
1121 PREINIT:
1122 clock_t clocks;
1123 CODE:
1124 clocks = clock();
1125 RETVAL = clocks == -1 ? -1 : (NV)clocks / (NV)CLOCKS_PER_SEC;
1126
1127 OUTPUT:
1128 RETVAL
1129
1130#else /* if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC) */
1131
1132NV
1133clock()
1134 CODE:
1135 croak("Time::HiRes::clock(): unimplemented in this platform");
1136 RETVAL = 0.0;
1137
1138#endif /* #if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC) */
1139
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