1 /*
2 *
3 * Copyright (c) 1996-2002 Douglas E. Wegscheid. All rights reserved.
4 *
5 * Copyright (c) 2002-2010 Jarkko Hietaniemi.
6 * All rights reserved.
7 *
8 * Copyright (C) 2011, 2012, 2013 Andrew Main (Zefram) <zefram@fysh.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the same terms as Perl itself.
12 */
13
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17 #define PERL_NO_GET_CONTEXT
18 #include "EXTERN.h"
19 #include "perl.h"
20 #include "XSUB.h"
21 #ifdef USE_PPPORT_H
22 # include "ppport.h"
23 #endif
24 #if defined(__CYGWIN__) && defined(HAS_W32API_WINDOWS_H)
25 # include <w32api/windows.h>
26 # define CYGWIN_WITH_W32API
27 #endif
28 #ifdef WIN32
29 # include <time.h>
30 #else
31 # include <sys/time.h>
32 #endif
33 #ifdef HAS_SELECT
34 # ifdef I_SYS_SELECT
35 # include <sys/select.h>
36 # endif
37 #endif
38 #if defined(TIME_HIRES_CLOCK_GETTIME_SYSCALL) || defined(TIME_HIRES_CLOCK_GETRES_SYSCALL)
39 # include <syscall.h>
40 #endif
41 #ifdef __cplusplus
42 }
43 #endif
44
45 #define PERL_VERSION_DECIMAL(r,v,s) (r*1000000 + v*1000 + s)
46 #define PERL_DECIMAL_VERSION \
47 PERL_VERSION_DECIMAL(PERL_REVISION,PERL_VERSION,PERL_SUBVERSION)
48 #define PERL_VERSION_GE(r,v,s) \
49 (PERL_DECIMAL_VERSION >= PERL_VERSION_DECIMAL(r,v,s))
50
51 #ifndef GCC_DIAG_IGNORE
52 # define GCC_DIAG_IGNORE(x)
53 # define GCC_DIAG_RESTORE
54 #endif
55 #ifndef GCC_DIAG_IGNORE_STMT
56 # define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
57 # define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
58 #endif
59
60 #if PERL_VERSION_GE(5,7,3) && !PERL_VERSION_GE(5,10,1)
61 # undef SAVEOP
62 # define SAVEOP() SAVEVPTR(PL_op)
63 #endif
64
65 #define IV_1E6 1000000
66 #define IV_1E7 10000000
67 #define IV_1E9 1000000000
68
69 #define NV_1E6 1000000.0
70 #define NV_1E7 10000000.0
71 #define NV_1E9 1000000000.0
72
73 #ifndef PerlProc_pause
74 # define PerlProc_pause() Pause()
75 #endif
76
77 #ifdef HAS_PAUSE
78 # define Pause pause
79 #else
80 # undef Pause /* In case perl.h did it already. */
81 # define Pause() sleep(~0) /* Zzz for a long time. */
82 #endif
83
84 /* Though the cpp define ITIMER_VIRTUAL is available the functionality
85 * is not supported in Cygwin as of August 2004, ditto for Win32.
86 * Neither are ITIMER_PROF or ITIMER_REALPROF implemented. --jhi
87 */
88 #if defined(__CYGWIN__) || defined(WIN32)
89 # undef ITIMER_VIRTUAL
90 # undef ITIMER_PROF
91 # undef ITIMER_REALPROF
92 #endif
93
94 #ifndef TIME_HIRES_CLOCKID_T
95 typedef int clockid_t;
96 #endif
97
98 #if defined(TIME_HIRES_CLOCK_GETTIME) && defined(_STRUCT_ITIMERSPEC)
99
100 /* HP-UX has CLOCK_XXX values but as enums, not as defines.
101 * The only way to detect these would be to test compile for each. */
102 # ifdef __hpux
103 /* However, it seems that at least in HP-UX 11.31 ia64 there *are*
104 * defines for these, so let's try detecting them. */
105 # ifndef CLOCK_REALTIME
106 # define CLOCK_REALTIME CLOCK_REALTIME
107 # define CLOCK_VIRTUAL CLOCK_VIRTUAL
108 # define CLOCK_PROFILE CLOCK_PROFILE
109 # endif
110 # endif /* # ifdef __hpux */
111
112 #endif /* #if defined(TIME_HIRES_CLOCK_GETTIME) && defined(_STRUCT_ITIMERSPEC) */
113
114 #if defined(WIN32) || defined(CYGWIN_WITH_W32API)
115
116 # ifndef HAS_GETTIMEOFDAY
117 # define HAS_GETTIMEOFDAY
118 # endif
119
120 /* shows up in winsock.h?
121 struct timeval {
122 long tv_sec;
123 long tv_usec;
124 }
125 */
126
127 typedef union {
128 unsigned __int64 ft_i64;
129 FILETIME ft_val;
130 } FT_t;
131
132 # define MY_CXT_KEY "Time::HiRes_" XS_VERSION
133
134 typedef struct {
135 unsigned long run_count;
136 unsigned __int64 base_ticks;
137 unsigned __int64 tick_frequency;
138 FT_t base_systime_as_filetime;
139 unsigned __int64 reset_time;
140 } my_cxt_t;
141
142 /* Visual C++ 2013 and older don't have the timespec structure */
143 # if defined(_MSC_VER) && _MSC_VER < 1900
144 struct timespec {
145 time_t tv_sec;
146 long tv_nsec;
147 };
148 # endif
149
150 START_MY_CXT
151
152 /* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */
153 # ifdef __GNUC__
154 # define Const64(x) x##LL
155 # else
156 # define Const64(x) x##i64
157 # endif
158 # define EPOCH_BIAS Const64(116444736000000000)
159
160 # ifdef Const64
161 # ifdef __GNUC__
162 # define IV_1E6LL 1000000LL /* Needed because of Const64() ##-appends LL (or i64). */
163 # define IV_1E7LL 10000000LL
164 # define IV_1E9LL 1000000000LL
165 # else
166 # define IV_1E6i64 1000000i64
167 # define IV_1E7i64 10000000i64
168 # define IV_1E9i64 1000000000i64
169 # endif
170 # endif
171
172 /* NOTE: This does not compute the timezone info (doing so can be expensive,
173 * and appears to be unsupported even by glibc) */
174
175 /* dMY_CXT needs a Perl context and we don't want to call PERL_GET_CONTEXT
176 for performance reasons */
177
178 # undef gettimeofday
179 # define gettimeofday(tp, not_used) _gettimeofday(aTHX_ tp, not_used)
180
181 # undef GetSystemTimePreciseAsFileTime
182 # define GetSystemTimePreciseAsFileTime(out) _GetSystemTimePreciseAsFileTime(aTHX_ out)
183
184 # undef clock_gettime
185 # define clock_gettime(clock_id, tp) _clock_gettime(aTHX_ clock_id, tp)
186
187 # undef clock_getres
188 # define clock_getres(clock_id, tp) _clock_getres(clock_id, tp)
189
190 # ifndef CLOCK_REALTIME
191 # define CLOCK_REALTIME 1
192 # define CLOCK_MONOTONIC 2
193 # endif
194
195 /* If the performance counter delta drifts more than 0.5 seconds from the
196 * system time then we recalibrate to the system time. This means we may
197 * move *backwards* in time! */
198 # define MAX_PERF_COUNTER_SKEW Const64(5000000) /* 0.5 seconds */
199
200 /* Reset reading from the performance counter every five minutes.
201 * Many PC clocks just seem to be so bad. */
202 # define MAX_PERF_COUNTER_TICKS Const64(300000000) /* 300 seconds */
203
204 /*
205 * Windows 8 introduced GetSystemTimePreciseAsFileTime(), but currently we have
206 * to support older systems, so for now we provide our own implementation.
207 * In the future we will switch to the real deal.
208 */
209 static void
_GetSystemTimePreciseAsFileTime(pTHX_ FILETIME * out)210 _GetSystemTimePreciseAsFileTime(pTHX_ FILETIME *out)
211 {
212 dMY_CXT;
213 FT_t ft;
214
215 if (MY_CXT.run_count++ == 0 ||
216 MY_CXT.base_systime_as_filetime.ft_i64 > MY_CXT.reset_time) {
217
218 QueryPerformanceFrequency((LARGE_INTEGER*)&MY_CXT.tick_frequency);
219 QueryPerformanceCounter((LARGE_INTEGER*)&MY_CXT.base_ticks);
220 GetSystemTimeAsFileTime(&MY_CXT.base_systime_as_filetime.ft_val);
221 ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64;
222 MY_CXT.reset_time = ft.ft_i64 + MAX_PERF_COUNTER_TICKS;
223 }
224 else {
225 __int64 diff;
226 unsigned __int64 ticks;
227 QueryPerformanceCounter((LARGE_INTEGER*)&ticks);
228 ticks -= MY_CXT.base_ticks;
229 ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64
230 + Const64(IV_1E7) * (ticks / MY_CXT.tick_frequency)
231 +(Const64(IV_1E7) * (ticks % MY_CXT.tick_frequency)) / MY_CXT.tick_frequency;
232 diff = ft.ft_i64 - MY_CXT.base_systime_as_filetime.ft_i64;
233 if (diff < -MAX_PERF_COUNTER_SKEW || diff > MAX_PERF_COUNTER_SKEW) {
234 MY_CXT.base_ticks += ticks;
235 GetSystemTimeAsFileTime(&MY_CXT.base_systime_as_filetime.ft_val);
236 ft.ft_i64 = MY_CXT.base_systime_as_filetime.ft_i64;
237 }
238 }
239
240 *out = ft.ft_val;
241
242 return;
243 }
244
245 static int
_gettimeofday(pTHX_ struct timeval * tp,void * not_used)246 _gettimeofday(pTHX_ struct timeval *tp, void *not_used)
247 {
248 FT_t ft;
249
250 PERL_UNUSED_ARG(not_used);
251
252 GetSystemTimePreciseAsFileTime(&ft.ft_val);
253
254 /* seconds since epoch */
255 tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / Const64(IV_1E7));
256
257 /* microseconds remaining */
258 tp->tv_usec = (long)((ft.ft_i64 / Const64(10)) % Const64(IV_1E6));
259
260 return 0;
261 }
262
263 static int
_clock_gettime(pTHX_ clockid_t clock_id,struct timespec * tp)264 _clock_gettime(pTHX_ clockid_t clock_id, struct timespec *tp)
265 {
266 FT_t ft;
267
268 switch (clock_id) {
269 case CLOCK_REALTIME: {
270 FT_t ft;
271
272 GetSystemTimePreciseAsFileTime(&ft.ft_val);
273 tp->tv_sec = (time_t)((ft.ft_i64 - EPOCH_BIAS) / IV_1E7);
274 tp->tv_nsec = (long)((ft.ft_i64 % IV_1E7) * 100);
275 break;
276 }
277 case CLOCK_MONOTONIC: {
278 unsigned __int64 freq, ticks;
279
280 QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
281 QueryPerformanceCounter((LARGE_INTEGER*)&ticks);
282
283 tp->tv_sec = (time_t)(ticks / freq);
284 tp->tv_nsec = (long)((IV_1E9 * (ticks % freq)) / freq);
285 break;
286 }
287 default:
288 errno = EINVAL;
289 return 1;
290 }
291
292 return 0;
293 }
294
295 static int
_clock_getres(clockid_t clock_id,struct timespec * tp)296 _clock_getres(clockid_t clock_id, struct timespec *tp)
297 {
298 unsigned __int64 freq, qpc_res_ns;
299
300 QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
301 qpc_res_ns = IV_1E9 > freq ? IV_1E9 / freq : 1;
302
303 switch (clock_id) {
304 case CLOCK_REALTIME:
305 tp->tv_sec = 0;
306 /* the resolution can't be smaller than 100ns because our implementation
307 * of CLOCK_REALTIME is using FILETIME internally */
308 tp->tv_nsec = (long)(qpc_res_ns > 100 ? qpc_res_ns : 100);
309 break;
310
311 case CLOCK_MONOTONIC:
312 tp->tv_sec = 0;
313 tp->tv_nsec = (long)qpc_res_ns;
314 break;
315
316 default:
317 errno = EINVAL;
318 return 1;
319 }
320
321 return 0;
322 }
323
324 #endif /* #if defined(WIN32) || defined(CYGWIN_WITH_W32API) */
325
326 #if !defined(HAS_GETTIMEOFDAY) && defined(VMS)
327 # define HAS_GETTIMEOFDAY
328
329 # include <lnmdef.h>
330 # include <time.h> /* gettimeofday */
331 # include <stdlib.h> /* qdiv */
332 # include <starlet.h> /* sys$gettim */
333 # include <descrip.h>
334 # ifdef __VAX
335 # include <lib$routines.h> /* lib$ediv() */
336 # endif
337
338 /*
339 VMS binary time is expressed in 100 nano-seconds since
340 system base time which is 17-NOV-1858 00:00:00.00
341 */
342
343 # define DIV_100NS_TO_SECS 10000000L
344 # define DIV_100NS_TO_USECS 10L
345
346 /*
347 gettimeofday is supposed to return times since the epoch
348 so need to determine this in terms of VMS base time
349 */
350 static $DESCRIPTOR(dscepoch,"01-JAN-1970 00:00:00.00");
351
352 # ifdef __VAX
353 static long base_adjust[2]={0L,0L};
354 # else
355 static __int64 base_adjust=0;
356 # endif
357
358 /*
359
360 If we don't have gettimeofday, then likely we are on a VMS machine that
361 operates on local time rather than UTC...so we have to zone-adjust.
362 This code gleefully swiped from VMS.C
363
364 */
365 /* method used to handle UTC conversions:
366 * 1 == CRTL gmtime(); 2 == SYS$TIMEZONE_DIFFERENTIAL; 3 == no correction
367 */
368 static int gmtime_emulation_type;
369 /* number of secs to add to UTC POSIX-style time to get local time */
370 static long int utc_offset_secs;
371 static struct dsc$descriptor_s fildevdsc =
372 { 12, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$FILE_DEV" };
373 static struct dsc$descriptor_s *fildev[] = { &fildevdsc, NULL };
374
toutc_dst(time_t loc)375 static time_t toutc_dst(time_t loc) {
376 struct tm *rsltmp;
377
378 if ((rsltmp = localtime(&loc)) == NULL) return -1;
379 loc -= utc_offset_secs;
380 if (rsltmp->tm_isdst) loc -= 3600;
381 return loc;
382 }
383
toloc_dst(time_t utc)384 static time_t toloc_dst(time_t utc) {
385 struct tm *rsltmp;
386
387 utc += utc_offset_secs;
388 if ((rsltmp = localtime(&utc)) == NULL) return -1;
389 if (rsltmp->tm_isdst) utc += 3600;
390 return utc;
391 }
392
393 # define _toutc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \
394 ((gmtime_emulation_type || timezone_setup()), \
395 (gmtime_emulation_type == 1 ? toutc_dst(secs) : \
396 ((secs) - utc_offset_secs))))
397
398 # define _toloc(secs) ((secs) == (time_t) -1 ? (time_t) -1 : \
399 ((gmtime_emulation_type || timezone_setup()), \
400 (gmtime_emulation_type == 1 ? toloc_dst(secs) : \
401 ((secs) + utc_offset_secs))))
402
403 static int
timezone_setup(void)404 timezone_setup(void)
405 {
406 struct tm *tm_p;
407
408 if (gmtime_emulation_type == 0) {
409 int dstnow;
410 time_t base = 15 * 86400; /* 15jan71; to avoid month/year ends between */
411 /* results of calls to gmtime() and localtime() */
412 /* for same &base */
413
414 gmtime_emulation_type++;
415 if ((tm_p = gmtime(&base)) == NULL) { /* CRTL gmtime() is a fake */
416 char off[LNM$C_NAMLENGTH+1];;
417
418 gmtime_emulation_type++;
419 if (!Perl_vmstrnenv("SYS$TIMEZONE_DIFFERENTIAL",off,0,fildev,0)) {
420 gmtime_emulation_type++;
421 utc_offset_secs = 0;
422 Perl_warn(aTHX_ "no UTC offset information; assuming local time is UTC");
423 }
424 else { utc_offset_secs = atol(off); }
425 }
426 else { /* We've got a working gmtime() */
427 struct tm gmt, local;
428
429 gmt = *tm_p;
430 tm_p = localtime(&base);
431 local = *tm_p;
432 utc_offset_secs = (local.tm_mday - gmt.tm_mday) * 86400;
433 utc_offset_secs += (local.tm_hour - gmt.tm_hour) * 3600;
434 utc_offset_secs += (local.tm_min - gmt.tm_min) * 60;
435 utc_offset_secs += (local.tm_sec - gmt.tm_sec);
436 }
437 }
438 return 1;
439 }
440
441
442 int
gettimeofday(struct timeval * tp,void * tpz)443 gettimeofday (struct timeval *tp, void *tpz)
444 {
445 long ret;
446 # ifdef __VAX
447 long quad[2];
448 long quad1[2];
449 long div_100ns_to_secs;
450 long div_100ns_to_usecs;
451 long quo,rem;
452 long quo1,rem1;
453 # else
454 __int64 quad;
455 __qdiv_t ans1,ans2;
456 # endif
457 /*
458 In case of error, tv_usec = 0 and tv_sec = VMS condition code.
459 The return from function is also set to -1.
460 This is not exactly as per the manual page.
461 */
462
463 tp->tv_usec = 0;
464
465 # ifdef __VAX
466 if (base_adjust[0]==0 && base_adjust[1]==0) {
467 # else
468 if (base_adjust==0) { /* Need to determine epoch adjustment */
469 # endif
470 ret=sys$bintim(&dscepoch,&base_adjust);
471 if (1 != (ret &&1)) {
472 tp->tv_sec = ret;
473 return -1;
474 }
475 }
476
477 ret=sys$gettim(&quad); /* Get VMS system time */
478 if ((1 && ret) == 1) {
479 # ifdef __VAX
480 quad[0] -= base_adjust[0]; /* convert to epoch offset */
481 quad[1] -= base_adjust[1]; /* convert 2nd half of quadword */
482 div_100ns_to_secs = DIV_100NS_TO_SECS;
483 div_100ns_to_usecs = DIV_100NS_TO_USECS;
484 lib$ediv(&div_100ns_to_secs,&quad,&quo,&rem);
485 quad1[0] = rem;
486 quad1[1] = 0L;
487 lib$ediv(&div_100ns_to_usecs,&quad1,&quo1,&rem1);
488 tp->tv_sec = quo; /* Whole seconds */
489 tp->tv_usec = quo1; /* Micro-seconds */
490 # else
491 quad -= base_adjust; /* convert to epoch offset */
492 ans1=qdiv(quad,DIV_100NS_TO_SECS);
493 ans2=qdiv(ans1.rem,DIV_100NS_TO_USECS);
494 tp->tv_sec = ans1.quot; /* Whole seconds */
495 tp->tv_usec = ans2.quot; /* Micro-seconds */
496 # endif
497 } else {
498 tp->tv_sec = ret;
499 return -1;
500 }
501 # ifdef VMSISH_TIME
502 # ifdef RTL_USES_UTC
503 if (VMSISH_TIME) tp->tv_sec = _toloc(tp->tv_sec);
504 # else
505 if (!VMSISH_TIME) tp->tv_sec = _toutc(tp->tv_sec);
506 # endif
507 # endif
508 return 0;
509 }
510 #endif /* #if !defined(HAS_GETTIMEOFDAY) && defined(VMS) */
511
512
513 /* Do not use H A S _ N A N O S L E E P
514 * so that Perl Configure doesn't scan for it (and pull in -lrt and
515 * the like which are not usually good ideas for the default Perl).
516 * (We are part of the core perl now.)
517 * The TIME_HIRES_NANOSLEEP is set by Makefile.PL. */
518 #if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP)
519 # define HAS_USLEEP
520 # define usleep hrt_usleep /* could conflict with ncurses for static build */
521
522 static void
523 hrt_usleep(unsigned long usec) /* This is used to emulate usleep. */
524 {
525 struct timespec res;
526 res.tv_sec = usec / IV_1E6;
527 res.tv_nsec = ( usec - res.tv_sec * IV_1E6 ) * 1000;
528 nanosleep(&res, NULL);
529 }
530
531 #endif /* #if !defined(HAS_USLEEP) && defined(TIME_HIRES_NANOSLEEP) */
532
533 #if !defined(HAS_USLEEP) && defined(HAS_SELECT)
534 # ifndef SELECT_IS_BROKEN
535 # define HAS_USLEEP
536 # define usleep hrt_usleep /* could conflict with ncurses for static build */
537
538 static void
539 hrt_usleep(unsigned long usec)
540 {
541 struct timeval tv;
542 tv.tv_sec = 0;
543 tv.tv_usec = usec;
544 select(0, (Select_fd_set_t)NULL, (Select_fd_set_t)NULL,
545 (Select_fd_set_t)NULL, &tv);
546 }
547 # endif
548 #endif /* #if !defined(HAS_USLEEP) && defined(HAS_SELECT) */
549
550 #if !defined(HAS_USLEEP) && defined(WIN32)
551 # define HAS_USLEEP
552 # define usleep hrt_usleep /* could conflict with ncurses for static build */
553
554 static void
555 hrt_usleep(unsigned long usec)
556 {
557 long msec;
558 msec = usec / 1000;
559 Sleep (msec);
560 }
561 #endif /* #if !defined(HAS_USLEEP) && defined(WIN32) */
562
563 #if !defined(HAS_USLEEP) && defined(HAS_POLL)
564 # define HAS_USLEEP
565 # define usleep hrt_usleep /* could conflict with ncurses for static build */
566
567 static void
568 hrt_usleep(unsigned long usec)
569 {
570 int msec = usec / 1000;
571 poll(0, 0, msec);
572 }
573
574 #endif /* #if !defined(HAS_USLEEP) && defined(HAS_POLL) */
575
576 #if defined(HAS_SETITIMER) && defined(ITIMER_REAL)
577
578 static int
579 hrt_ualarm_itimero(struct itimerval *oitv, int usec, int uinterval)
580 {
581 struct itimerval itv;
582 itv.it_value.tv_sec = usec / IV_1E6;
583 itv.it_value.tv_usec = usec % IV_1E6;
584 itv.it_interval.tv_sec = uinterval / IV_1E6;
585 itv.it_interval.tv_usec = uinterval % IV_1E6;
586 return setitimer(ITIMER_REAL, &itv, oitv);
587 }
588
589 #endif /* #if !defined(HAS_UALARM) && defined(HAS_SETITIMER) */
590
591 #if !defined(HAS_UALARM) && defined(HAS_SETITIMER)
592 # define HAS_UALARM
593 # define ualarm hrt_ualarm_itimer /* could conflict with ncurses for static build */
594 #endif
595
596 #if !defined(HAS_UALARM) && defined(VMS)
597 # define HAS_UALARM
598 # define ualarm vms_ualarm
599
600 # include <lib$routines.h>
601 # include <ssdef.h>
602 # include <starlet.h>
603 # include <descrip.h>
604 # include <signal.h>
605 # include <jpidef.h>
606 # include <psldef.h>
607
608 # define VMSERR(s) (!((s)&1))
609
610 static void
611 us_to_VMS(useconds_t mseconds, unsigned long v[])
612 {
613 int iss;
614 unsigned long qq[2];
615
616 qq[0] = mseconds;
617 qq[1] = 0;
618 v[0] = v[1] = 0;
619
620 iss = lib$addx(qq,qq,qq);
621 if (VMSERR(iss)) lib$signal(iss);
622 iss = lib$subx(v,qq,v);
623 if (VMSERR(iss)) lib$signal(iss);
624 iss = lib$addx(qq,qq,qq);
625 if (VMSERR(iss)) lib$signal(iss);
626 iss = lib$subx(v,qq,v);
627 if (VMSERR(iss)) lib$signal(iss);
628 iss = lib$subx(v,qq,v);
629 if (VMSERR(iss)) lib$signal(iss);
630 }
631
632 static int
633 VMS_to_us(unsigned long v[])
634 {
635 int iss;
636 unsigned long div=10,quot, rem;
637
638 iss = lib$ediv(&div,v,",&rem);
639 if (VMSERR(iss)) lib$signal(iss);
640
641 return quot;
642 }
643
644 typedef unsigned short word;
645 typedef struct _ualarm {
646 int function;
647 int repeat;
648 unsigned long delay[2];
649 unsigned long interval[2];
650 unsigned long remain[2];
651 } Alarm;
652
653
654 static int alarm_ef;
655 static Alarm *a0, alarm_base;
656 # define UAL_NULL 0
657 # define UAL_SET 1
658 # define UAL_CLEAR 2
659 # define UAL_ACTIVE 4
660 static void ualarm_AST(Alarm *a);
661
662 static int
663 vms_ualarm(int mseconds, int interval)
664 {
665 Alarm *a, abase;
666 struct item_list3 {
667 word length;
668 word code;
669 void *bufaddr;
670 void *retlenaddr;
671 } ;
672 static struct item_list3 itmlst[2];
673 static int first = 1;
674 unsigned long asten;
675 int iss, enabled;
676
677 if (first) {
678 first = 0;
679 itmlst[0].code = JPI$_ASTEN;
680 itmlst[0].length = sizeof(asten);
681 itmlst[0].retlenaddr = NULL;
682 itmlst[1].code = 0;
683 itmlst[1].length = 0;
684 itmlst[1].bufaddr = NULL;
685 itmlst[1].retlenaddr = NULL;
686
687 iss = lib$get_ef(&alarm_ef);
688 if (VMSERR(iss)) lib$signal(iss);
689
690 a0 = &alarm_base;
691 a0->function = UAL_NULL;
692 }
693 itmlst[0].bufaddr = &asten;
694
695 iss = sys$getjpiw(0,0,0,itmlst,0,0,0);
696 if (VMSERR(iss)) lib$signal(iss);
697 if (!(asten&0x08)) return -1;
698
699 a = &abase;
700 if (mseconds) {
701 a->function = UAL_SET;
702 } else {
703 a->function = UAL_CLEAR;
704 }
705
706 us_to_VMS(mseconds, a->delay);
707 if (interval) {
708 us_to_VMS(interval, a->interval);
709 a->repeat = 1;
710 } else
711 a->repeat = 0;
712
713 iss = sys$clref(alarm_ef);
714 if (VMSERR(iss)) lib$signal(iss);
715
716 iss = sys$dclast(ualarm_AST,a,0);
717 if (VMSERR(iss)) lib$signal(iss);
718
719 iss = sys$waitfr(alarm_ef);
720 if (VMSERR(iss)) lib$signal(iss);
721
722 if (a->function == UAL_ACTIVE)
723 return VMS_to_us(a->remain);
724 else
725 return 0;
726 }
727
728
729
730 static void
731 ualarm_AST(Alarm *a)
732 {
733 int iss;
734 unsigned long now[2];
735
736 iss = sys$gettim(now);
737 if (VMSERR(iss)) lib$signal(iss);
738
739 if (a->function == UAL_SET || a->function == UAL_CLEAR) {
740 if (a0->function == UAL_ACTIVE) {
741 iss = sys$cantim(a0,PSL$C_USER);
742 if (VMSERR(iss)) lib$signal(iss);
743
744 iss = lib$subx(a0->remain, now, a->remain);
745 if (VMSERR(iss)) lib$signal(iss);
746
747 if (a->remain[1] & 0x80000000)
748 a->remain[0] = a->remain[1] = 0;
749 }
750
751 if (a->function == UAL_SET) {
752 a->function = a0->function;
753 a0->function = UAL_ACTIVE;
754 a0->repeat = a->repeat;
755 if (a0->repeat) {
756 a0->interval[0] = a->interval[0];
757 a0->interval[1] = a->interval[1];
758 }
759 a0->delay[0] = a->delay[0];
760 a0->delay[1] = a->delay[1];
761
762 iss = lib$subx(now, a0->delay, a0->remain);
763 if (VMSERR(iss)) lib$signal(iss);
764
765 iss = sys$setimr(0,a0->delay,ualarm_AST,a0);
766 if (VMSERR(iss)) lib$signal(iss);
767 } else {
768 a->function = a0->function;
769 a0->function = UAL_NULL;
770 }
771 iss = sys$setef(alarm_ef);
772 if (VMSERR(iss)) lib$signal(iss);
773 } else if (a->function == UAL_ACTIVE) {
774 if (a->repeat) {
775 iss = lib$subx(now, a->interval, a->remain);
776 if (VMSERR(iss)) lib$signal(iss);
777
778 iss = sys$setimr(0,a->interval,ualarm_AST,a);
779 if (VMSERR(iss)) lib$signal(iss);
780 } else {
781 a->function = UAL_NULL;
782 }
783 iss = sys$wake(0,0);
784 if (VMSERR(iss)) lib$signal(iss);
785 lib$signal(SS$_ASTFLT);
786 } else {
787 lib$signal(SS$_BADPARAM);
788 }
789 }
790
791 #endif /* #if !defined(HAS_UALARM) && defined(VMS) */
792
793 #ifdef HAS_GETTIMEOFDAY
794
795 static int
796 myU2time(pTHX_ UV *ret)
797 {
798 struct timeval Tp;
799 int status;
800 status = gettimeofday (&Tp, NULL);
801 ret[0] = Tp.tv_sec;
802 ret[1] = Tp.tv_usec;
803 return status;
804 }
805
806 static NV
807 myNVtime()
808 {
809 # ifdef WIN32
810 dTHX;
811 # endif
812 struct timeval Tp;
813 int status;
814 status = gettimeofday (&Tp, NULL);
815 return status == 0 ? Tp.tv_sec + (Tp.tv_usec / NV_1E6) : -1.0;
816 }
817
818 #endif /* #ifdef HAS_GETTIMEOFDAY */
819
820 static void
821 hrstatns(UV *atime_nsec, UV *mtime_nsec, UV *ctime_nsec)
822 {
823 dTHX;
824 #if TIME_HIRES_STAT == 1
825 *atime_nsec = PL_statcache.st_atimespec.tv_nsec;
826 *mtime_nsec = PL_statcache.st_mtimespec.tv_nsec;
827 *ctime_nsec = PL_statcache.st_ctimespec.tv_nsec;
828 #elif TIME_HIRES_STAT == 2
829 *atime_nsec = PL_statcache.st_atimensec;
830 *mtime_nsec = PL_statcache.st_mtimensec;
831 *ctime_nsec = PL_statcache.st_ctimensec;
832 #elif TIME_HIRES_STAT == 3
833 *atime_nsec = PL_statcache.st_atime_n;
834 *mtime_nsec = PL_statcache.st_mtime_n;
835 *ctime_nsec = PL_statcache.st_ctime_n;
836 #elif TIME_HIRES_STAT == 4
837 *atime_nsec = PL_statcache.st_atim.tv_nsec;
838 *mtime_nsec = PL_statcache.st_mtim.tv_nsec;
839 *ctime_nsec = PL_statcache.st_ctim.tv_nsec;
840 #elif TIME_HIRES_STAT == 5
841 *atime_nsec = PL_statcache.st_uatime * 1000;
842 *mtime_nsec = PL_statcache.st_umtime * 1000;
843 *ctime_nsec = PL_statcache.st_uctime * 1000;
844 #else /* !TIME_HIRES_STAT */
845 *atime_nsec = 0;
846 *mtime_nsec = 0;
847 *ctime_nsec = 0;
848 #endif /* !TIME_HIRES_STAT */
849 }
850
851 /* Until Apple implements clock_gettime()
852 * (ditto clock_getres() and clock_nanosleep())
853 * we will emulate them using the Mach kernel interfaces. */
854 #if defined(PERL_DARWIN) && \
855 (defined(TIME_HIRES_CLOCK_GETTIME_EMULATION) || \
856 defined(TIME_HIRES_CLOCK_GETRES_EMULATION) || \
857 defined(TIME_HIRES_CLOCK_NANOSLEEP_EMULATION))
858
859 # ifndef CLOCK_REALTIME
860 # define CLOCK_REALTIME 0x01
861 # define CLOCK_MONOTONIC 0x02
862 # endif
863
864 # ifndef TIMER_ABSTIME
865 # define TIMER_ABSTIME 0x01
866 # endif
867
868 # ifdef USE_ITHREADS
869 # define PERL_DARWIN_MUTEX
870 # endif
871
872 # ifdef PERL_DARWIN_MUTEX
873 STATIC perl_mutex darwin_time_mutex;
874 # endif
875
876 # include <mach/mach_time.h>
877
878 static uint64_t absolute_time_init;
879 static mach_timebase_info_data_t timebase_info;
880 static struct timespec timespec_init;
881
882 static int darwin_time_init() {
883 struct timeval tv;
884 int success = 1;
885 # ifdef PERL_DARWIN_MUTEX
886 MUTEX_LOCK(&darwin_time_mutex);
887 # endif
888 if (absolute_time_init == 0) {
889 /* mach_absolute_time() cannot fail */
890 absolute_time_init = mach_absolute_time();
891 success = mach_timebase_info(&timebase_info) == KERN_SUCCESS;
892 if (success) {
893 success = gettimeofday(&tv, NULL) == 0;
894 if (success) {
895 timespec_init.tv_sec = tv.tv_sec;
896 timespec_init.tv_nsec = tv.tv_usec * 1000;
897 }
898 }
899 }
900 # ifdef PERL_DARWIN_MUTEX
901 MUTEX_UNLOCK(&darwin_time_mutex);
902 # endif
903 return success;
904 }
905
906 # ifdef TIME_HIRES_CLOCK_GETTIME_EMULATION
907 static int th_clock_gettime(clockid_t clock_id, struct timespec *ts) {
908 if (darwin_time_init() && timebase_info.denom) {
909 switch (clock_id) {
910 case CLOCK_REALTIME:
911 {
912 uint64_t nanos =
913 ((mach_absolute_time() - absolute_time_init) *
914 (uint64_t)timebase_info.numer) / (uint64_t)timebase_info.denom;
915 ts->tv_sec = timespec_init.tv_sec + nanos / IV_1E9;
916 ts->tv_nsec = timespec_init.tv_nsec + nanos % IV_1E9;
917 return 0;
918 }
919
920 case CLOCK_MONOTONIC:
921 {
922 uint64_t nanos =
923 (mach_absolute_time() *
924 (uint64_t)timebase_info.numer) / (uint64_t)timebase_info.denom;
925 ts->tv_sec = nanos / IV_1E9;
926 ts->tv_nsec = nanos - ts->tv_sec * IV_1E9;
927 return 0;
928 }
929
930 default:
931 break;
932 }
933 }
934
935 SETERRNO(EINVAL, LIB_INVARG);
936 return -1;
937 }
938
939 # define clock_gettime(clock_id, ts) th_clock_gettime((clock_id), (ts))
940
941 # endif /* TIME_HIRES_CLOCK_GETTIME_EMULATION */
942
943 # ifdef TIME_HIRES_CLOCK_GETRES_EMULATION
944 static int th_clock_getres(clockid_t clock_id, struct timespec *ts) {
945 if (darwin_time_init() && timebase_info.denom) {
946 switch (clock_id) {
947 case CLOCK_REALTIME:
948 case CLOCK_MONOTONIC:
949 ts->tv_sec = 0;
950 /* In newer kernels both the numer and denom are one,
951 * resulting in conversion factor of one, which is of
952 * course unrealistic. */
953 ts->tv_nsec = timebase_info.numer / timebase_info.denom;
954 return 0;
955 default:
956 break;
957 }
958 }
959
960 SETERRNO(EINVAL, LIB_INVARG);
961 return -1;
962 }
963
964 # define clock_getres(clock_id, ts) th_clock_getres((clock_id), (ts))
965 # endif /* TIME_HIRES_CLOCK_GETRES_EMULATION */
966
967 # ifdef TIME_HIRES_CLOCK_NANOSLEEP_EMULATION
968 static int th_clock_nanosleep(clockid_t clock_id, int flags,
969 const struct timespec *rqtp,
970 struct timespec *rmtp) {
971 if (darwin_time_init()) {
972 switch (clock_id) {
973 case CLOCK_REALTIME:
974 case CLOCK_MONOTONIC:
975 {
976 uint64_t nanos = rqtp->tv_sec * IV_1E9 + rqtp->tv_nsec;
977 int success;
978 if ((flags & TIMER_ABSTIME)) {
979 uint64_t back =
980 timespec_init.tv_sec * IV_1E9 + timespec_init.tv_nsec;
981 nanos = nanos > back ? nanos - back : 0;
982 }
983 success =
984 mach_wait_until(mach_absolute_time() + nanos) == KERN_SUCCESS;
985
986 /* In the relative sleep, the rmtp should be filled in with
987 * the 'unused' part of the rqtp in case the sleep gets
988 * interrupted by a signal. But it is unknown how signals
989 * interact with mach_wait_until(). In the absolute sleep,
990 * the rmtp should stay untouched. */
991 rmtp->tv_sec = 0;
992 rmtp->tv_nsec = 0;
993
994 return success;
995 }
996
997 default:
998 break;
999 }
1000 }
1001
1002 SETERRNO(EINVAL, LIB_INVARG);
1003 return -1;
1004 }
1005
1006 # define clock_nanosleep(clock_id, flags, rqtp, rmtp) \
1007 th_clock_nanosleep((clock_id), (flags), (rqtp), (rmtp))
1008
1009 # endif /* TIME_HIRES_CLOCK_NANOSLEEP_EMULATION */
1010
1011 #endif /* PERL_DARWIN */
1012
1013 /* The macOS headers warn about using certain interfaces in
1014 * OS-release-ignorant manner, for example:
1015 *
1016 * warning: 'futimens' is only available on macOS 10.13 or newer
1017 * [-Wunguarded-availability-new]
1018 *
1019 * (ditto for utimensat)
1020 *
1021 * There is clang __builtin_available() *runtime* check for this.
1022 * The gotchas are that neither __builtin_available() nor __has_builtin()
1023 * are always available.
1024 */
1025 #ifndef __has_builtin
1026 # define __has_builtin(x) 0 /* non-clang */
1027 #endif
1028 #ifdef HAS_FUTIMENS
1029 # if defined(PERL_DARWIN) && __has_builtin(__builtin_available)
1030 # define FUTIMENS_AVAILABLE __builtin_available(macOS 10.13, *)
1031 # else
1032 # define FUTIMENS_AVAILABLE 1
1033 # endif
1034 #else
1035 # define FUTIMENS_AVAILABLE 0
1036 #endif
1037 #ifdef HAS_UTIMENSAT
1038 # if defined(PERL_DARWIN) && __has_builtin(__builtin_available)
1039 # define UTIMENSAT_AVAILABLE __builtin_available(macOS 10.13, *)
1040 # else
1041 # define UTIMENSAT_AVAILABLE 1
1042 # endif
1043 #else
1044 # define UTIMENSAT_AVAILABLE 0
1045 #endif
1046
1047 #include "const-c.inc"
1048
1049 #if (defined(TIME_HIRES_NANOSLEEP)) || \
1050 (defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME))
1051
1052 static void
1053 nanosleep_init(NV nsec,
1054 struct timespec *sleepfor,
1055 struct timespec *unslept) {
1056 sleepfor->tv_sec = (Time_t)(nsec / NV_1E9);
1057 sleepfor->tv_nsec = (long)(nsec - ((NV)sleepfor->tv_sec) * NV_1E9);
1058 unslept->tv_sec = 0;
1059 unslept->tv_nsec = 0;
1060 }
1061
1062 static NV
1063 nsec_without_unslept(struct timespec *sleepfor,
1064 const struct timespec *unslept) {
1065 if (sleepfor->tv_sec >= unslept->tv_sec) {
1066 sleepfor->tv_sec -= unslept->tv_sec;
1067 if (sleepfor->tv_nsec >= unslept->tv_nsec) {
1068 sleepfor->tv_nsec -= unslept->tv_nsec;
1069 } else if (sleepfor->tv_sec > 0) {
1070 sleepfor->tv_sec--;
1071 sleepfor->tv_nsec += IV_1E9;
1072 sleepfor->tv_nsec -= unslept->tv_nsec;
1073 } else {
1074 sleepfor->tv_sec = 0;
1075 sleepfor->tv_nsec = 0;
1076 }
1077 } else {
1078 sleepfor->tv_sec = 0;
1079 sleepfor->tv_nsec = 0;
1080 }
1081 return ((NV)sleepfor->tv_sec) * NV_1E9 + ((NV)sleepfor->tv_nsec);
1082 }
1083
1084 #endif
1085
1086 /* In case Perl and/or Devel::PPPort are too old, minimally emulate
1087 * IS_SAFE_PATHNAME() (which looks for zero bytes in the pathname). */
1088 #ifndef IS_SAFE_PATHNAME
1089 # if PERL_VERSION >= 12 /* Perl_ck_warner is 5.10.0 -> */
1090 # ifdef WARN_SYSCALLS
1091 # define WARNEMUCAT WARN_SYSCALLS /* 5.22.0 -> */
1092 # else
1093 # define WARNEMUCAT WARN_MISC
1094 # endif
1095 # define WARNEMU(opname) Perl_ck_warner(aTHX_ packWARN(WARNEMUCAT), "Invalid \\0 character in pathname for %s",opname)
1096 # else
1097 # define WARNEMU(opname) Perl_warn(aTHX_ "Invalid \\0 character in pathname for %s",opname)
1098 # endif
1099 # define IS_SAFE_PATHNAME(pv, len, opname) (((len)>1)&&memchr((pv), 0, (len)-1)?(SETERRNO(ENOENT, LIB_INVARG),WARNEMU(opname),FALSE):(TRUE))
1100 #endif
1101
1102 MODULE = Time::HiRes PACKAGE = Time::HiRes
1103
1104 PROTOTYPES: ENABLE
1105
1106 BOOT:
1107 {
1108 #ifdef MY_CXT_KEY
1109 MY_CXT_INIT;
1110 #endif
1111 #ifdef HAS_GETTIMEOFDAY
1112 {
1113 (void) hv_store(PL_modglobal, "Time::NVtime", 12,
1114 newSViv(PTR2IV(myNVtime)), 0);
1115 (void) hv_store(PL_modglobal, "Time::U2time", 12,
1116 newSViv(PTR2IV(myU2time)), 0);
1117 }
1118 #endif
1119 #if defined(PERL_DARWIN)
1120 # if defined(USE_ITHREADS) && defined(PERL_DARWIN_MUTEX)
1121 MUTEX_INIT(&darwin_time_mutex);
1122 # endif
1123 #endif
1124 }
1125
1126 #if defined(USE_ITHREADS) && defined(MY_CXT_KEY)
1127
1128 void
1129 CLONE(...)
1130 CODE:
1131 MY_CXT_CLONE;
1132
1133 #endif
1134
1135 INCLUDE: const-xs.inc
1136
1137 #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY)
1138
1139 NV
1140 usleep(useconds)
1141 NV useconds
1142 PREINIT:
1143 struct timeval Ta, Tb;
1144 CODE:
1145 gettimeofday(&Ta, NULL);
1146 if (items > 0) {
1147 if (useconds >= NV_1E6) {
1148 IV seconds = (IV) (useconds / NV_1E6);
1149 /* If usleep() has been implemented using setitimer()
1150 * then this contortion is unnecessary-- but usleep()
1151 * may be implemented in some other way, so let's contort. */
1152 if (seconds) {
1153 sleep(seconds);
1154 useconds -= NV_1E6 * seconds;
1155 }
1156 } else if (useconds < 0.0)
1157 croak("Time::HiRes::usleep(%" NVgf
1158 "): negative time not invented yet", useconds);
1159
1160 usleep((U32)useconds);
1161 } else
1162 PerlProc_pause();
1163
1164 gettimeofday(&Tb, NULL);
1165 # if 0
1166 printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
1167 # endif
1168 RETVAL = NV_1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec);
1169
1170 OUTPUT:
1171 RETVAL
1172
1173 # if defined(TIME_HIRES_NANOSLEEP)
1174
1175 NV
1176 nanosleep(nsec)
1177 NV nsec
1178 PREINIT:
1179 struct timespec sleepfor, unslept;
1180 CODE:
1181 if (nsec < 0.0)
1182 croak("Time::HiRes::nanosleep(%" NVgf
1183 "): negative time not invented yet", nsec);
1184 nanosleep_init(nsec, &sleepfor, &unslept);
1185 if (nanosleep(&sleepfor, &unslept) == 0) {
1186 RETVAL = nsec;
1187 } else {
1188 RETVAL = nsec_without_unslept(&sleepfor, &unslept);
1189 }
1190 OUTPUT:
1191 RETVAL
1192
1193 # else /* #if defined(TIME_HIRES_NANOSLEEP) */
1194
1195 NV
1196 nanosleep(nsec)
1197 NV nsec
1198 CODE:
1199 PERL_UNUSED_ARG(nsec);
1200 croak("Time::HiRes::nanosleep(): unimplemented in this platform");
1201 RETVAL = 0.0;
1202 OUTPUT:
1203 RETVAL
1204
1205 # endif /* #if defined(TIME_HIRES_NANOSLEEP) */
1206
1207 NV
1208 sleep(...)
1209 PREINIT:
1210 struct timeval Ta, Tb;
1211 CODE:
1212 gettimeofday(&Ta, NULL);
1213 if (items > 0) {
1214 NV seconds = SvNV(ST(0));
1215 if (seconds >= 0.0) {
1216 UV useconds = (UV)(1E6 * (seconds - (UV)seconds));
1217 if (seconds >= 1.0)
1218 sleep((U32)seconds);
1219 if ((IV)useconds < 0) {
1220 # if defined(__sparc64__) && defined(__GNUC__)
1221 /* Sparc64 gcc 2.95.3 (e.g. on NetBSD) has a bug
1222 * where (0.5 - (UV)(0.5)) will under certain
1223 * circumstances (if the double is cast to UV more
1224 * than once?) evaluate to -0.5, instead of 0.5. */
1225 useconds = -(IV)useconds;
1226 # endif /* #if defined(__sparc64__) && defined(__GNUC__) */
1227 if ((IV)useconds < 0)
1228 croak("Time::HiRes::sleep(%" NVgf
1229 "): internal error: useconds < 0 (unsigned %" UVuf
1230 " signed %" IVdf ")",
1231 seconds, useconds, (IV)useconds);
1232 }
1233 usleep(useconds);
1234 } else
1235 croak("Time::HiRes::sleep(%" NVgf
1236 "): negative time not invented yet", seconds);
1237 } else
1238 PerlProc_pause();
1239
1240 gettimeofday(&Tb, NULL);
1241 # if 0
1242 printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
1243 # endif
1244 RETVAL = (NV)(Tb.tv_sec-Ta.tv_sec)+0.000001*(NV)(Tb.tv_usec-Ta.tv_usec);
1245
1246 OUTPUT:
1247 RETVAL
1248
1249 #else /* #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY) */
1250
1251 NV
1252 usleep(useconds)
1253 NV useconds
1254 CODE:
1255 PERL_UNUSED_ARG(useconds);
1256 croak("Time::HiRes::usleep(): unimplemented in this platform");
1257 RETVAL = 0.0;
1258 OUTPUT:
1259 RETVAL
1260
1261 #endif /* #if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY) */
1262
1263 #ifdef HAS_UALARM
1264
1265 IV
1266 ualarm(useconds,uinterval=0)
1267 int useconds
1268 int uinterval
1269 CODE:
1270 if (useconds < 0 || uinterval < 0)
1271 croak("Time::HiRes::ualarm(%d, %d): negative time not invented yet", useconds, uinterval);
1272 # if defined(HAS_SETITIMER) && defined(ITIMER_REAL)
1273 {
1274 struct itimerval itv;
1275 if (hrt_ualarm_itimero(&itv, useconds, uinterval)) {
1276 /* To conform to ualarm's interface, we're actually ignoring
1277 an error here. */
1278 RETVAL = 0;
1279 } else {
1280 RETVAL = itv.it_value.tv_sec * IV_1E6 + itv.it_value.tv_usec;
1281 }
1282 }
1283 # else
1284 if (useconds >= IV_1E6 || uinterval >= IV_1E6)
1285 croak("Time::HiRes::ualarm(%d, %d): useconds or uinterval"
1286 " equal to or more than %" IVdf,
1287 useconds, uinterval, IV_1E6);
1288
1289 RETVAL = ualarm(useconds, uinterval);
1290 # endif
1291
1292 OUTPUT:
1293 RETVAL
1294
1295 NV
1296 alarm(seconds,interval=0)
1297 NV seconds
1298 NV interval
1299 CODE:
1300 if (seconds < 0.0 || interval < 0.0)
1301 croak("Time::HiRes::alarm(%" NVgf ", %" NVgf
1302 "): negative time not invented yet", seconds, interval);
1303
1304 {
1305 IV iseconds = (IV)seconds;
1306 IV iinterval = (IV)interval;
1307 NV fseconds = seconds - iseconds;
1308 NV finterval = interval - iinterval;
1309 IV useconds, uinterval;
1310 if (fseconds >= 1.0 || finterval >= 1.0)
1311 croak("Time::HiRes::alarm(%" NVgf ", %" NVgf
1312 "): seconds or interval too large to split correctly",
1313 seconds, interval);
1314
1315 useconds = IV_1E6 * fseconds;
1316 uinterval = IV_1E6 * finterval;
1317 # if defined(HAS_SETITIMER) && defined(ITIMER_REAL)
1318 {
1319 struct itimerval nitv, oitv;
1320 nitv.it_value.tv_sec = iseconds;
1321 nitv.it_value.tv_usec = useconds;
1322 nitv.it_interval.tv_sec = iinterval;
1323 nitv.it_interval.tv_usec = uinterval;
1324 if (setitimer(ITIMER_REAL, &nitv, &oitv)) {
1325 /* To conform to alarm's interface, we're actually ignoring
1326 an error here. */
1327 RETVAL = 0;
1328 } else {
1329 RETVAL = oitv.it_value.tv_sec + ((NV)oitv.it_value.tv_usec) / NV_1E6;
1330 }
1331 }
1332 # else
1333 if (iseconds || iinterval)
1334 croak("Time::HiRes::alarm(%" NVgf ", %" NVgf
1335 "): seconds or interval equal to or more than 1.0 ",
1336 seconds, interval);
1337
1338 RETVAL = (NV)ualarm( useconds, uinterval ) / NV_1E6;
1339 # endif
1340 }
1341
1342 OUTPUT:
1343 RETVAL
1344
1345 #else /* #ifdef HAS_UALARM */
1346
1347 int
1348 ualarm(useconds,interval=0)
1349 int useconds
1350 int interval
1351 CODE:
1352 PERL_UNUSED_ARG(useconds);
1353 PERL_UNUSED_ARG(interval);
1354 croak("Time::HiRes::ualarm(): unimplemented in this platform");
1355 RETVAL = -1;
1356 OUTPUT:
1357 RETVAL
1358
1359 NV
1360 alarm(seconds,interval=0)
1361 NV seconds
1362 NV interval
1363 CODE:
1364 PERL_UNUSED_ARG(seconds);
1365 PERL_UNUSED_ARG(interval);
1366 croak("Time::HiRes::alarm(): unimplemented in this platform");
1367 RETVAL = 0.0;
1368 OUTPUT:
1369 RETVAL
1370
1371 #endif /* #ifdef HAS_UALARM */
1372
1373 #ifdef HAS_GETTIMEOFDAY
1374
1375 void
1376 gettimeofday()
1377 PREINIT:
1378 struct timeval Tp;
1379 PPCODE:
1380 int status;
1381 status = gettimeofday (&Tp, NULL);
1382 if (status == 0) {
1383 if (GIMME == G_ARRAY) {
1384 EXTEND(sp, 2);
1385 PUSHs(sv_2mortal(newSViv(Tp.tv_sec)));
1386 PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
1387 } else {
1388 EXTEND(sp, 1);
1389 PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / NV_1E6))));
1390 }
1391 }
1392
1393 NV
1394 time()
1395 PREINIT:
1396 struct timeval Tp;
1397 CODE:
1398 int status;
1399 status = gettimeofday (&Tp, NULL);
1400 if (status == 0) {
1401 RETVAL = Tp.tv_sec + (Tp.tv_usec / NV_1E6);
1402 } else {
1403 RETVAL = -1.0;
1404 }
1405 OUTPUT:
1406 RETVAL
1407
1408 #endif /* #ifdef HAS_GETTIMEOFDAY */
1409
1410 #if defined(HAS_GETITIMER) && defined(HAS_SETITIMER)
1411
1412 # define TV2NV(tv) ((NV)((tv).tv_sec) + 0.000001 * (NV)((tv).tv_usec))
1413
1414 void
1415 setitimer(which, seconds, interval = 0)
1416 int which
1417 NV seconds
1418 NV interval
1419 PREINIT:
1420 struct itimerval newit;
1421 struct itimerval oldit;
1422 PPCODE:
1423 if (seconds < 0.0 || interval < 0.0)
1424 croak("Time::HiRes::setitimer(%" IVdf ", %" NVgf ", %" NVgf
1425 "): negative time not invented yet",
1426 (IV)which, seconds, interval);
1427 newit.it_value.tv_sec = (IV)seconds;
1428 newit.it_value.tv_usec =
1429 (IV)((seconds - (NV)newit.it_value.tv_sec) * NV_1E6);
1430 newit.it_interval.tv_sec = (IV)interval;
1431 newit.it_interval.tv_usec =
1432 (IV)((interval - (NV)newit.it_interval.tv_sec) * NV_1E6);
1433 /* on some platforms the 1st arg to setitimer is an enum, which
1434 * causes -Wc++-compat to complain about passing an int instead
1435 */
1436 GCC_DIAG_IGNORE_STMT(-Wc++-compat);
1437 if (setitimer(which, &newit, &oldit) == 0) {
1438 EXTEND(sp, 1);
1439 PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_value))));
1440 if (GIMME == G_ARRAY) {
1441 EXTEND(sp, 1);
1442 PUSHs(sv_2mortal(newSVnv(TV2NV(oldit.it_interval))));
1443 }
1444 }
1445 GCC_DIAG_RESTORE_STMT;
1446
1447 void
1448 getitimer(which)
1449 int which
1450 PREINIT:
1451 struct itimerval nowit;
1452 PPCODE:
1453 /* on some platforms the 1st arg to getitimer is an enum, which
1454 * causes -Wc++-compat to complain about passing an int instead
1455 */
1456 GCC_DIAG_IGNORE_STMT(-Wc++-compat);
1457 if (getitimer(which, &nowit) == 0) {
1458 EXTEND(sp, 1);
1459 PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_value))));
1460 if (GIMME == G_ARRAY) {
1461 EXTEND(sp, 1);
1462 PUSHs(sv_2mortal(newSVnv(TV2NV(nowit.it_interval))));
1463 }
1464 }
1465 GCC_DIAG_RESTORE_STMT;
1466
1467 #endif /* #if defined(HAS_GETITIMER) && defined(HAS_SETITIMER) */
1468
1469 #if defined(TIME_HIRES_UTIME)
1470
1471 I32
1472 utime(accessed, modified, ...)
1473 PROTOTYPE: $$@
1474 PREINIT:
1475 SV* accessed;
1476 SV* modified;
1477 SV* file;
1478
1479 struct timespec utbuf[2];
1480 struct timespec *utbufp = utbuf;
1481 int tot;
1482
1483 CODE:
1484 accessed = ST(0);
1485 modified = ST(1);
1486 items -= 2;
1487 tot = 0;
1488
1489 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1490 utbufp = NULL;
1491 else {
1492 if (SvNV(accessed) < 0.0 || SvNV(modified) < 0.0)
1493 croak("Time::HiRes::utime(%" NVgf ", %" NVgf
1494 "): negative time not invented yet",
1495 SvNV(accessed), SvNV(modified));
1496 Zero(&utbuf, sizeof utbuf, char);
1497
1498 utbuf[0].tv_sec = (Time_t)SvNV(accessed); /* time accessed */
1499 utbuf[0].tv_nsec = (long)(
1500 (SvNV(accessed) - (NV)utbuf[0].tv_sec)
1501 * NV_1E9 + (NV)0.5);
1502
1503 utbuf[1].tv_sec = (Time_t)SvNV(modified); /* time modified */
1504 utbuf[1].tv_nsec = (long)(
1505 (SvNV(modified) - (NV)utbuf[1].tv_sec)
1506 * NV_1E9 + (NV)0.5);
1507 }
1508
1509 while (items > 0) {
1510 file = POPs; items--;
1511
1512 if (SvROK(file) && GvIO(SvRV(file)) && IoIFP(sv_2io(SvRV(file)))) {
1513 int fd = PerlIO_fileno(IoIFP(sv_2io(file)));
1514 if (fd < 0) {
1515 SETERRNO(EBADF,RMS_IFI);
1516 } else {
1517 # ifdef HAS_FUTIMENS
1518 if (FUTIMENS_AVAILABLE) {
1519 if (futimens(fd, utbufp) == 0) {
1520 tot++;
1521 }
1522 } else {
1523 croak("futimens unimplemented in this platform");
1524 }
1525 # else /* HAS_FUTIMENS */
1526 croak("futimens unimplemented in this platform");
1527 # endif /* HAS_FUTIMENS */
1528 }
1529 }
1530 else {
1531 # ifdef HAS_UTIMENSAT
1532 if (UTIMENSAT_AVAILABLE) {
1533 STRLEN len;
1534 char * name = SvPV(file, len);
1535 if (IS_SAFE_PATHNAME(name, len, "utime") &&
1536 utimensat(AT_FDCWD, name, utbufp, 0) == 0) {
1537
1538 tot++;
1539 }
1540 } else {
1541 croak("utimensat unimplemented in this platform");
1542 }
1543 # else /* HAS_UTIMENSAT */
1544 croak("utimensat unimplemented in this platform");
1545 # endif /* HAS_UTIMENSAT */
1546 }
1547 } /* while items */
1548 RETVAL = tot;
1549
1550 OUTPUT:
1551 RETVAL
1552
1553 #else /* #if defined(TIME_HIRES_UTIME) */
1554
1555 I32
1556 utime(accessed, modified, ...)
1557 CODE:
1558 croak("Time::HiRes::utime(): unimplemented in this platform");
1559 RETVAL = 0;
1560 OUTPUT:
1561 RETVAL
1562
1563 #endif /* #if defined(TIME_HIRES_UTIME) */
1564
1565 #if defined(TIME_HIRES_CLOCK_GETTIME)
1566
1567 NV
1568 clock_gettime(clock_id = CLOCK_REALTIME)
1569 clockid_t clock_id
1570 PREINIT:
1571 struct timespec ts;
1572 int status = -1;
1573 CODE:
1574 # ifdef TIME_HIRES_CLOCK_GETTIME_SYSCALL
1575 status = syscall(SYS_clock_gettime, clock_id, &ts);
1576 # else
1577 status = clock_gettime(clock_id, &ts);
1578 # endif
1579 RETVAL = status == 0 ? ts.tv_sec + (NV) ts.tv_nsec / NV_1E9 : -1;
1580
1581 OUTPUT:
1582 RETVAL
1583
1584 #else /* if defined(TIME_HIRES_CLOCK_GETTIME) */
1585
1586 NV
1587 clock_gettime(clock_id = 0)
1588 clockid_t clock_id
1589 CODE:
1590 PERL_UNUSED_ARG(clock_id);
1591 croak("Time::HiRes::clock_gettime(): unimplemented in this platform");
1592 RETVAL = 0.0;
1593 OUTPUT:
1594 RETVAL
1595
1596 #endif /* #if defined(TIME_HIRES_CLOCK_GETTIME) */
1597
1598 #if defined(TIME_HIRES_CLOCK_GETRES)
1599
1600 NV
1601 clock_getres(clock_id = CLOCK_REALTIME)
1602 clockid_t clock_id
1603 PREINIT:
1604 int status = -1;
1605 struct timespec ts;
1606 CODE:
1607 # ifdef TIME_HIRES_CLOCK_GETRES_SYSCALL
1608 status = syscall(SYS_clock_getres, clock_id, &ts);
1609 # else
1610 status = clock_getres(clock_id, &ts);
1611 # endif
1612 RETVAL = status == 0 ? ts.tv_sec + (NV) ts.tv_nsec / NV_1E9 : -1;
1613
1614 OUTPUT:
1615 RETVAL
1616
1617 #else /* if defined(TIME_HIRES_CLOCK_GETRES) */
1618
1619 NV
1620 clock_getres(clock_id = 0)
1621 clockid_t clock_id
1622 CODE:
1623 PERL_UNUSED_ARG(clock_id);
1624 croak("Time::HiRes::clock_getres(): unimplemented in this platform");
1625 RETVAL = 0.0;
1626 OUTPUT:
1627 RETVAL
1628
1629 #endif /* #if defined(TIME_HIRES_CLOCK_GETRES) */
1630
1631 #if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME)
1632
1633 NV
1634 clock_nanosleep(clock_id, nsec, flags = 0)
1635 clockid_t clock_id
1636 NV nsec
1637 int flags
1638 PREINIT:
1639 struct timespec sleepfor, unslept;
1640 CODE:
1641 if (nsec < 0.0)
1642 croak("Time::HiRes::clock_nanosleep(..., %" NVgf
1643 "): negative time not invented yet", nsec);
1644 nanosleep_init(nsec, &sleepfor, &unslept);
1645 if (clock_nanosleep(clock_id, flags, &sleepfor, &unslept) == 0) {
1646 RETVAL = nsec;
1647 } else {
1648 RETVAL = nsec_without_unslept(&sleepfor, &unslept);
1649 }
1650 OUTPUT:
1651 RETVAL
1652
1653 #else /* if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME) */
1654
1655 NV
1656 clock_nanosleep(clock_id, nsec, flags = 0)
1657 clockid_t clock_id
1658 NV nsec
1659 int flags
1660 CODE:
1661 PERL_UNUSED_ARG(clock_id);
1662 PERL_UNUSED_ARG(nsec);
1663 PERL_UNUSED_ARG(flags);
1664 croak("Time::HiRes::clock_nanosleep(): unimplemented in this platform");
1665 RETVAL = 0.0;
1666 OUTPUT:
1667 RETVAL
1668
1669 #endif /* #if defined(TIME_HIRES_CLOCK_NANOSLEEP) && defined(TIMER_ABSTIME) */
1670
1671 #if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC)
1672
1673 NV
1674 clock()
1675 PREINIT:
1676 clock_t clocks;
1677 CODE:
1678 clocks = clock();
1679 RETVAL = clocks == (clock_t) -1 ? (clock_t) -1 : (NV)clocks / (NV)CLOCKS_PER_SEC;
1680
1681 OUTPUT:
1682 RETVAL
1683
1684 #else /* if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC) */
1685
1686 NV
1687 clock()
1688 CODE:
1689 croak("Time::HiRes::clock(): unimplemented in this platform");
1690 RETVAL = 0.0;
1691 OUTPUT:
1692 RETVAL
1693
1694 #endif /* #if defined(TIME_HIRES_CLOCK) && defined(CLOCKS_PER_SEC) */
1695
1696 void
1697 stat(...)
1698 PROTOTYPE: ;$
1699 PREINIT:
1700 OP fakeop;
1701 int nret;
1702 ALIAS:
1703 Time::HiRes::lstat = 1
1704 PPCODE:
1705 XPUSHs(sv_2mortal(newSVsv(items == 1 ? ST(0) : DEFSV)));
1706 PUTBACK;
1707 ENTER;
1708 PL_laststatval = -1;
1709 SAVEOP();
1710 Zero(&fakeop, 1, OP);
1711 fakeop.op_type = ix ? OP_LSTAT : OP_STAT;
1712 fakeop.op_ppaddr = PL_ppaddr[fakeop.op_type];
1713 fakeop.op_flags = GIMME_V == G_ARRAY ? OPf_WANT_LIST :
1714 GIMME_V == G_SCALAR ? OPf_WANT_SCALAR : OPf_WANT_VOID;
1715 PL_op = &fakeop;
1716 (void)fakeop.op_ppaddr(aTHX);
1717 SPAGAIN;
1718 LEAVE;
1719 nret = SP+1 - &ST(0);
1720 if (nret == 13) {
1721 UV atime = SvUV(ST( 8));
1722 UV mtime = SvUV(ST( 9));
1723 UV ctime = SvUV(ST(10));
1724 UV atime_nsec;
1725 UV mtime_nsec;
1726 UV ctime_nsec;
1727 hrstatns(&atime_nsec, &mtime_nsec, &ctime_nsec);
1728 if (atime_nsec)
1729 ST( 8) = sv_2mortal(newSVnv(atime + (NV) atime_nsec / NV_1E9));
1730 if (mtime_nsec)
1731 ST( 9) = sv_2mortal(newSVnv(mtime + (NV) mtime_nsec / NV_1E9));
1732 if (ctime_nsec)
1733 ST(10) = sv_2mortal(newSVnv(ctime + (NV) ctime_nsec / NV_1E9));
1734 }
1735 XSRETURN(nret);
1736