1 Revision history for Perl extension Time::HiRes.
5 - fix the 'hierachy' typo in Makefile.PL [rt.cpan.org #8492]
6 - should now build in Solaris [rt.cpan.org #7165] (since 1.64)
7 - should now build in Cygwin [rt.cpan.org #7535] (since 1.64)
8 - close also [rt.cpan.org #5933] "Time::HiRes::time does not pick up time adjustments like ntp" since ever reproducing it in the same environment
9 has become rather unlikely
12 - one should not mix u?alarm and sleep (the tests modified
13 by 1.65, #12 and #13, hung in Solaris), now we just busy
14 loop executing an empty block
15 - in the documentation underline the unspecificity of mixing
17 - small spelling fixes
20 - regenerate ppport.h with Devel::PPPort 3.03,
21 now the MY_CXT_CLONE is defined in ppport.h,
22 we no more need to do that.
24 - the test #12 would often hang in sigsuspend() (at least that's
25 where Mac OS X' ktrace shows it hanging). With the sleep()s
26 changed to sleep(1)s, the tests still pass but no hang after
27 a few hundred repeats.
30 - Win32 and any ithread build: ppport.h didn't define
31 MY_CXT_CLONE, which seems to be a Time-HiResism.
34 - Skip testing if under PERL_CORE and Time::HiRes has not
35 been Configured (from Marcus Holland-Moritz, core change
37 - Use ppport.h generated by Devel::PPPort 3.01,
38 allowing cutting away our own portability code.
39 - Don't use $ENV{PERL_CORE} for < 5.6.0.
40 - Don't use "for my $i" for <= 5.003.
41 - Don't use Pause() for <= 5.003.
42 - Can't use newSVpvf for <= 5.003.
43 (most of the changes from Marcus)
46 - Win32: reset reading from the performance counters every
47 five minutes to better track wall clock time (thanks to
48 PC timers being often quite bad), should help long-running
52 - Win32: Patch from Steve Hay
53 [PATCH] Re: [perl #30755] [Win32] Different results from Time::HiRes::gettimeofdayunder the debugger
54 to [perl #30755] reported by Nigel Sandever
56 - Cygwin: Use the Win32 recalibration code also in Cygwin if the
57 <w32api/windows.h> APIs are available. Cygwin testing by
58 Yitzchak Scott-Thoennes.
60 - Solaris: use -lposix4 to get nanosleep for Solaris 2.6,
61 after that keep using -lrt, patch from Alan Burlison,
62 bug reported in [cpan #7165]
65 - Change the Win32 recalibration limit to 0.5 seconds and tweak
66 the documentation to blather less about the gory details of the
67 Win32 implementation and more about the complications in general
68 of meddling with the system clock.
71 - Document the 1.57 change better.
74 - Win32/Cygwin/MinGW: if the performance counter drifts by more
75 than two seconds from the system clock (due to ntp adjustments,
76 for example), recalibrate our internal counter: from Jan Dubois,
77 based on [cpan #5933] by Jerry D. Hedden.
80 - Give a clearer message if the tests timeout (perl change #22253)
81 - Don't use /tmp or its moral equivalents (perl bug #15036,
85 - Windows: mingw32 patch from Mike Pomraning (use Perl's Const64()
86 instead of VC-specific i64 suffix)
89 - Solaris: like Tru64 (dec_osf) also Solaris need -lrt for nanosleep
92 - Windows: higher resolution time() by using the Windows
93 performance counter API, from Jan Dubois and Anton Shcherbinin.
94 The exact new higher resolution depends on the hardware,
95 but it should be quite a bit better than using the basic
99 - In AIX (v?) with perl 5.6.1 the HiRes.t can hang after
100 the subtest 18. No known analysis nor fix, but added
101 an alarm (that requires fork() and alarm()) to the test.
104 - doc tweaks from mjd (perl change #20456)
105 - NCR MP-RAS hints file added (svr4.pl) (perl change #21249)
108 - add a message (for non-core builds) to Makefile.PL about
109 the LC_ALL=C workaround
110 - &Time::HiRes::d_nanosleep was broken (perl change #20131)
111 - the nanosleep() probe was broken (perl change #20061)
112 - use existence instead of definedness for feature probes
114 - MPE/iX tweak (perl change #20042)
115 - do not use HAS_NANOSLEEP (perl change #19898)
118 - UVuf for non-IVSIZE platforms (from Keiichiro Nagano)
119 - OS/2 can always mix subsecond sleeps with signals
120 (part of perl change #19789)
123 - workaround for buggy gcc 2.95.3 in openbsd/sparc64
127 - do not use -lrt in Linux (from March Lehmann, perl change #19449)
128 - unnecessary (nanosleep is in libc anyway)
129 - harmful (-lrt slows down execution)
130 - incompatible (with many distributions' pthreads)
133 - do not create files in blib directories under core
134 (perl change #19160, from rgs)
135 - detypo s/VTLARM/VTARLM/ (perl change #19328, from mjd)
138 - guarantee that $xdefine in HiRes.t is always defined
139 (perl change #19109, from IlyaZ)
140 - a cleaner way to detect PERL_CORE (perl change #19111,
144 - add hints/irix.pl to turn off overly POSIX flags that
145 cause hide struct timespec to be hidden (and compilation
146 to fail) (bleadperl change #19085)
147 - documentation tweaks
150 - add c:/temp to the list of temp directories to probe
151 so that cygwin (and win*?) builds are happy. This was
152 needed at least in my cygwin 1.3.20/w2k setup.
155 - modernize the constants code (from Nicholas Clark)
158 - At some point the ability to figure our the correct incdir
159 for EXTERN.h (either a core perl build, or an installed perl)
160 had broken (which lead into all test compiles failing with
161 a core perl build, but thanks to the robustness of Makefile.PL
162 nothing of this was visible). The brokenness seemed to be
163 caused by $ENV{PERL_CORE} not being on for core builds?
164 Now stole a trick from the Encode that sets $ENV{PERL_CORE}
165 right, and both styles of build should work again.
168 - Nicholas Clark noticed that the my_catdir() emulation function
169 was broken (which means that we didn't really work for Perls
171 - inspired by fixing the above made the whole Makefile.PL -w
173 - tightened up the Makefile.PL output, less whitespace
176 - fix from Craig Berry for better building in VMS with PERL_CORE
179 - no functional changes
180 - move lib/Time/HiRes.pm as Hires.pm
181 - libraries scanning was slightly broken (always scanned
182 for a library even when $Config{libs} already had it)
185 - Ray Zimmerman ran into a race condition in Mac OS X.
186 A 0.01-second alarm fired before the test expected.
187 The test first slept indefinitely (blocking for signals)
188 and only after that tested for the signal having been sent.
189 Since the signal had already been sent, the test #12 never
190 completed. The solution: test first, then block.
191 - default to being silent on all probing attempts, set the
192 environment variable VERBOSE to a true value to see the
193 details (the probing command and the possible errors)
196 - do not clear MAN3PODS in Makefile.PL (Radoslaw Zielinski)
197 - INSTALLDIRS => 'perl' missing which means that Time::HiRes
198 cannot be upgraded from CPAN to override the 5.8.0 version
200 - Time::HiRes 1.35 could not be dropped as-is to bleadperl
201 because the include directories did not adjust themselves
202 if $ENV{PERL_CORE} (Hugo van der Sanden)
203 - add documentation about the restart of select() under alarm()
206 - small documentation tweaks
210 - better VMS operation (Craig Berry)
213 - our time machine is accelerating: now works with Perl 5.004_01
214 (tried with 5.003_07 and 5.002 but I get segmentation faults
215 from running the Makefile.PL with those in Tru64 4.0D)
218 - backward compatibility (pre-5.6.0) tweaks:
219 - no XSLoader in 5.00503, use DynaLoader instead
220 - no SvPV_nolen, either
221 - no PerlProc_pause(), either
222 - now tested with 5.00404 and 5.00503
223 - Makefile.PL requires 5.00404 (no more 5.002)
224 - use nanosleep instead of usleep, if it is available (Wilson Snyder)
225 (this means that one can mix subsecond sleeps with alarms)
226 - because of nanosleep we probe for -lrt and -lposix4
227 - the existence of getitimer/nanosleep/setitimer/ualarm/usleep
228 is available by exportable constants Time::HiRes::d_func
229 (since older Perl do not have them in %Config, and even
230 5.8.0 does not probe for nanosleep)
233 - backward compatibility (pre-5.6.1) tweaks:
234 - define NV if no NVTYPE
235 - define IVdf if needed (note: the Devel::PPPort
236 in 5.8.0 does not try hard hard enough since
237 the IVSIZE might not be defined)
238 - define NVgf if needed
239 - grab the typemap from 5.8.0 for the NV stuff
242 - release 1.29_02 as 1.30
246 - fix a silly unclosed comment typo in HiRes.xs
247 - document and export REALTIME_REALPROF (Solaris)
251 - only getitimer(ITIMER_REAL) available in Cygwin and Win32
252 (need to patch this also in Perl 5.[89])
253 - remove CVS revision log from HiRes.xs
257 The following numbered patches refer to the Perl 5.7 changes,
258 you can browse them at http://public.activestate.com/cgi-bin/perlbrowse
260 - 17558: Add #!./perl to the .t
261 - 17201: linux + usemorebits fix, from Rafael Garcia-Suarez
262 - 16198: political correctness, from Simon Cozens
263 - 15857: doc tweaks, from Jarkko Hietaniemi
264 - 15593: optimization in .xs, from Paul Green
265 - 14892: pod fixes, from Robin Barker
266 - 14100: VOS fixes, from Paul Green
267 - 13422: XS segfault, from Marc Lehmann
268 - 13378: whether select() gets restarted on signals, depends
269 - 13354: timing constraints, again, from Andy Dougherty
270 - 13278: can't do subecond alarms with ualarm;
271 break out early if alarms do not seem to be working
272 - 13266: test relaxation (cygwin gets lower hires
273 times than lores ones)
274 - 12846: protect against high load, from Jarkko Hietaniemi
275 - 12837: HiRes.t VMS tweak, from Craig A. Berry
276 - 12797: HiRes.t VMS tweak, from Charles Lane
277 - 12769: HiRes.t VMS tweak, from Craig A. Berry
278 - 12744: gcc vs MS 64-bit constant syntax, from Nick Ing-Simmons
279 - 12722: VMS ualarm for VMS without ualarm, from Charles Lane
280 - 12692: alarm() ain't gonna work if ualarm() ain't,
281 from Gurusamy Sarathy
282 - 12680: minor VMS tweak, from Charles Lane
283 - 12617: don't try to print ints as IVs, from Jarkko Hietaniemi
284 - 12609: croak on negative time, from Jarkko Hietaniemi
285 - 12595: Cygwin rounds up for time(), from Jarkko Hietaniemi
286 - 12594: MacOS Classic timeofday, from Chris Nandor
287 - 12473: allow for more than one second for sleep() and usleep()
288 - 12458: test tuning, relax timing constraints,
289 from Jarkko Hietaniemi
290 - 12449: make sleep() and usleep() to return the number
291 of seconds and microseconds actually slept (analogously
292 with the builtin sleep()), also make usleep() croak if
293 asked for more than 1_000_000 useconds, from Jarkko Hietaniemi
294 - 12366: Time::HiRes for VMS pre-7.0, from Charles Lane
295 - 12199: do not use ftime on Win32, from Gurusamy Sarathy
296 - 12196: use ftime() on Win32, from Artur Bergman
297 - 12184: fix Time::HiRes gettimeofday() on Win32, from Gurusamy Sarathy
298 - 12105: use GetSystemTime() on Win32, from Artur Bergman
299 - 12060: explain the 1e9 seconds problem, from Jarkko Hietaniemi
300 - 11901: UNICOS sloppy division, from Jarkko Hietaniemi
301 - 11797: problem in HiRes.t, from John P. Linderman
302 - 11414: prototype from Time::HiRes::sleep(), from Abhijit Menon-Sen
303 - 11409: Time::HiRes qw(sleep) failed, from Abhijit Menon-Sen
304 - 11270: dynix/ptx 4.5.2 hints fix, from Peter Prymmer
305 - 11032: VAX VMS s/div/lib\$ediv/ fix, from Peter Prymmer
306 - 11011: VAX VMS s/qdiv/div/ fix, from Peter Prymmer
307 - 10953: SCO OpenServer 5.0.5 requires an explicit -lc for usleep(),
309 - 10942: MPE/IX test tweaks, from Mark Bixby
310 - 10784: unnecessary pod2man calls, from Andy Dougherty
311 - 10354: ext/ + -Wall, from Doug MacEachern
312 - 10320: fix the BOOT section to call myU2time correctly
313 - 10317: correct casting for AIX< from H. Merijn Brand
314 - 10119: document that the core time() may be rounding, not truncating
315 - 10118: test fix, from John Peacock
316 - 9988: long =item, from Robin Barker
317 - 9714: correct test output
318 - 9708: test also the scalar aspect of getitimer()
319 - 9705: Add interval timers (setitimer, getitimer)
320 - 9692: do not require at least 5.005 using XS
322 The following changes were made on top of the changes
323 made for Time::HiRes during the Perl 5.7 development
324 cycle that culminated in the release of Perl 5.8.0.
326 - add "require 5.005" to the Makefile.PL
327 - remove the REVISION section (CVS log) from HiRes.pm
328 - add jhi's copyright alongside Douglas'
329 - move HiRes.pm to lib/Time/
331 - modify HiRes.t to use $ENV{PERL_CORE}
332 - modify the original Time::HiRes version 1.20 Makefile.PL
333 to work both with Perl 5.8.0 and the new code with pre-5.8.0
334 Perls (tried with 5.6.1)
335 - tiny tweaks and updates in README and TODO
336 - bump the VERSION to 1.29
338 1.20 Wed Feb 24 21:30 1999
339 - make our usleep and ualarm substitutes into hrt_usleep
340 and hrt_ualarm. This helps static links of Perl with other
341 packages that also have usleep, etc. From
342 Ilya Zakharevich <ilya@math.ohio-state.edu>
343 - add C API stuff. From Joshua Pritikin
344 <joshua.pritikin@db.com>
345 - VMS Makefile.PL fun. From pvhp@forte.com (Peter Prymmer)
346 - hopefully correct "-lc" fix for SCO.
349 1.19 Tue Sep 29 22:30 1998
350 - put VMS gettimeofday() in. Patch is from Sebastian Bazley
351 <seb@stian.demon.co.uk>
352 - change GIMME_V to GIMME to help people with older versions of
354 - fix Win32 version of gettimeofday(). It didn't affect anything,
355 but it confuses people reading the code when the return value
356 is backwards (0 is success).
357 - fix Makefile.PL (more) so that detection of gettimeofday is
360 1.18 Mon Jul 6 22:40 1998
361 - add usleep() for Win32.
362 - fix Makefile.PL to fix reported HP/UX feature where unresolved
363 externals still cause an executable to be generated (though no
364 x bit set). Thanks to David Kozinn for report and explanation.
365 Problems with the fix are mine :)
367 1.17 Wed Jul 1 20:10 1998
368 - fix setitimer calls so microseconds is not more than 1000000.
369 Hp/UX 9 doesn't like that. Provided by Roland B Robert, PhD.
370 - make Win32. We only get gettimeofday (the select hack doesn't
371 seem to work on my Win95 system).
372 - fix test 4 on 01test.t. add test to see if time() and
373 Time::HiRes::time() are close.
375 1.16 Wed Nov 12 21:05 1997
376 - add missing EXTEND in new gettimeofday scalar code.
378 1.15 Mon Nov 10 21:30 1997
379 - HiRes.pm: update pod. Provided by Gisle Aas.
380 - HiRes.xs: if gettimeofday() called in scalar context, do
381 something more useful than before. Provided by Gisle Aas.
382 - README: tell of xsubpp '-nolinenumber' woes. thanks to
383 Edward Henigin <ed@texas.net> for pointing out the problem.
385 1.14 Wed Nov 5 9:40 1997
386 - Makefile.PL: look for setitimer
387 - HiRes.xs: if missing ualarm, but we have setitimer, make up
388 our own setitimer. These were provided by Gisle Aas.
390 1.13 Tue Nov 4 23:30 1997
391 - Makefile.PL: fix autodetect mechanism to do try linking in addition
392 to just compiling; should fix Linux build problem. Fix was provided
395 1.12 Sun Oct 12 12:00:00 1997
396 - Makefile.PL: set XSOPT to '-nolinenumbers' to work around xsubpp bug;
397 you may need to comment this back out if you have an older xsubpp.
398 - HiRes.xs: set PROTOTYPES: DISABLE
400 1.11 Fri Sep 05 16:00:00 1997
402 Had some line commented out that shouldn't have been (testing
405 Previous version was corrupted.
407 1.10 Thu May 22 20:20:00 1997
408 - HiRes.xs, HiRes.pm, t/*:
409 - only compile what we have OS support for (or can
411 - only test what we compiled
412 - gross improvement to the test suite
414 This work was all done by Roderick Schertler
415 <roderick@argon.org>. If you run Linux or
416 one of the other ualarm-less platoforms, and you like this
417 module, let Roderick know; without him, it still wouldn't
418 be working on those boxes...
419 - Makefile.PL: figure out what routines the OS has and
420 only build what we need. These bits were written by Jarkko
421 Hietaniemi <jhi@iki.fi>. Again, gratitude is due...
423 1.02 Mon Dec 30 08:00:00 1996
424 - HiRes.pm: update documentation to say what to do when missing
425 ualarm() and friends.
426 - README: update to warn that ualarm() and friends need to exist
428 1.01 Fri Oct 17 08:00:00 1996
429 - Makefile.PL: make XSPROTOARGS => '-noprototyopes'
430 - HiRes.pm: put blank line between __END__ and =head1 so that
433 1.00 Tue Sep 03 13:00:00 1996
434 - original version; created by h2xs 1.16