-Revision history for Perl extension Time::HiRes.
-
-1.71 - a thinko in the nanosleep() detection
+Revision history for the Perl extension Time::HiRes.
+
+1.9705 [2007-02-06]
+ - nanosleep() and clock_nanosleep() detection and use were
+ quite broken; in Linux -lrt needed; fixes from Zefram
+ - [internal] slightly cleaner building of $DEFINE in Makefile.PL,
+ should avoid double/conflicting -D flags
+
+1.9704 [2007-01-01]
+ - allow 10% of slop in test #14 (testing difference between
+ CORE::time() and Time::HiRes::time()), there seem to be often
+ transient failures from Perl smoke builds on this test
+ - small pod tweaks
+
+1.9703 [2006-12-08]
+ - use int main(int argc, char **argv) consistently in Makefile.PL,
+ should help with
+ [rt.cpan.org #23868] nanosleep not detected under Mac OS 10.3.9 starting with Time::HiRes 1.96
+ - if someone still has the locale-broken Perl 5.8.0,
+ suggest that they upgrade their Perl
+
+1.9702 [2006-12-06]
+ - restore the -DATLEASTFIVEOHOHFIVE, Win32 needed it still
+
+1.9701 [2006-12-04]
+ - upgrade to ppport.h 3.10_02
+ - remove the -DATLEASTFIVEOHOHFIVE
+ - use the ppport.h PL_ppaddr, PL_statcache, PL_laststatval
+ - use the ppport.h aTHXR for calling Perl stat()
+ - switch into four-digit version since 2.0 is coming up
+ awfully fast but not feeling like a major rewrite
+
+1.97 [2006-11-30]
+ - 1.95 broke building in Win32 (since pp_stat is not exported),
+ figured out how to call an op directly in 5.005 (use Perl_ppaddr
+ instead of PL_ppaddr)
+ - backport to Perl 5.004_05 (requires using statcache
+ and laststatval instead of PL_statcache and PL_laststatval)
+ (also checked to work in 5.005_04, 5.6.1, and 5.8.8 with threads)
+
+1.96 [2006-11-30]
+ - 1.95 broke builds for threaded Perls, rt.cpan.org tickets:
+ [rt.cpan.org #23694] Time::HiRes fails tests on Solaris and Perl 5.6.1
+ [rt.cpan.org #23712] Time-HiRes 1.95 Fails make on AIX 5.2 with Perl 5.8.8
+ [rt.cpan.org #23730] Time::HiRes 1.95 fails make on MacOS X 10.3.9/perl 5.8.8
+ - use main() prototype consistently in Makefile.PL
+
+1.95 [2006-11-29]
+ - integrate core change #29180: Silence VC++ compiler warnings
+ from Steve Hay
+ - do not use PL_ppaddr in stat() because that is not available
+ in Perl 5.005_04
+ - regenerate fallback/*.inc for older Perls without
+ ExtUtils::Constant because of d_hires_stat, resolves
+ [rt.cpan.org #23694] Time::HiRes fails tests on Solaris and Perl 5.6.1
+ - Make Makefile.PL more defensive against false PERL_CORE
+
+1.94 [2006-10-16]
+ - file timestamps oddities seen: the atime and mtime
+ can be out of sync (modify first and read second can leave
+ atime < mtime) and mtime can be subsecond while atime is not.
+ So make the test more forgiving.
+
+1.93 [2006-10-15]
+ - the ualarm() tests (34-37) assumed that ualarm(N)
+ could never alarm in less than N seconds, widened
+ the acceptable relative range to 0.9..1.5. Addresses
+ [rt.cpan.org #22090] and [rt.cpan.org #22091].
+
+ - skip the stat() tests in cygwin and win32, because
+ if run on FAT the timestamp granularity is only 2 seconds.
+ Any good way to detect (cygwin or win32) whether we are
+ being run on NTFS or anywhere with better timestamps?
+ Addresses [rt.cpan.org #22089] and [rt.cpan.org #22098].
+
+1.92 [2006-10-13]
+ - scan for subsecond resolution timestamps in struct stat,
+ some known possibilities:
+
+ (1) struct timespec st_atimespec;
+ st_atimespec.tv_nsec;
+ (2) time_t st_atime;
+ long st_atimensec;
+ (3) time_t st_atime;
+ int st_atime_n;
+ (4) timestruc_t st_atim;
+ st_atim.tv_nsec
+ (5) time_t st_atime;
+ int st_uatime;
+
+ If something like this is found, one can do
+
+ use Time::HiRes;
+ my @stat = Time::HiRes::stat();
+
+ or even override the standard stat():
+
+ use Time::HiRes qw(stat);
+
+ to get the stat() timestamps
+
+ my ($atime, $mtime, $ctime) = @stat[8, 9, 10];
+
+ with subsecond resolution (assuming both the operating
+ system and the filesystem support that kind of thing).
+
+ Contributions for more systems (especially non-UNIX,
+ e.g. but not limited to: Win32, VMS, OS/2) gladly accepted.
+ (also more UNIX variants welcome: HP-UX? IRIX?)
+
+ Thanks to H.Merijn Brand, John Peacock, and Craig
+ Berry for brave beta testing.
+
+1.91 [2006-09-29]
+ - ualarm() in SuSE 10.1 was overflowing after ~4.2 seconds,
+ possibly due to a glibc bug/feature (suspected overflow at
+ 2**32 microseconds?), workaround by using the setitimer()
+ implementation of ualarm() if either useconds or
+ interval > 999_999 (this case seems to vary between systems:
+ are useconds more than 999_999 for ualarm() defined or not)
+ Added more ualarm() tests to catch various overflow points,
+ hopefully no problems in various platforms.
+ (The problem report by Mark Seger and Jon Paul Sullivan of HP.)
+
+1.90 [2006-08-22]
+ - tweak still needed for Const64(), from Jerry Hedden
+ - get a freshly generated ppport.h
+ - update Copyright years
+
+1.89 [2006-08-22]
+ - Const64() already appends an 'LL' (or i64), so provide LL and i64
+ forms for the IV_1E[679] (effects Win32 and Cygwin), reported by
+ Jerry Hedden.
+ - the Changes entry for 1.88 talked about [IN]V_1[679],
+ missing the 'E'.
+
+1.88 [2006-08-21]
+ - clean up the g++ warnings in HiRes.xs, all of them
+ about mixing integer and floating point, introduce
+ constants IV_1E[679] and NV_1E[679]
+
+1.87 [2006-02-13]
+ - [rt.cpan.org #17442] 'make test' frequently fails under
+ Cygwin Perl v5.8.8, reported and patched by J. R. Hedden
+ (two race condition bugs in the END block in the case the
+ main process dies before the timer process, unearthed
+ by a bug in Cygwin ualarm)
+
+1.86 [2005-12-17]
+ - HiRes.t:s/ok 32/ok 33/, from Dominic Dunlop
+ - tighten up the clock() test marginally by requiring non-negative
+ - clock_nanosleep() and clock() doc tweaks
+
+1.85 [2005-12-16]
+ - the interface to clock_nanosleep() is more natural
+ when it is like (hires) time() (instead of like nanosleep),
+ and the .xs implementation of clock_nanosleep() in 1.84
+ was broken anyway
+ - the semantics of clock() are not quite so silly as I thought,
+ but still somewhat odd, documented as such
+ - additional enhancements to the clock() documentation
+ - add test for clock_nanosleep() (I cannot test this
+ since none of my systems have the function)
+ - add test for clock()
+
+1.84 [2005-12-16]
+ - add clock() which returns the processor time in
+ (floating point) seconds since an arbitrary era
+ - add clock_nanosleep() which suspends the current
+ thread until either absolute time or for relative time
+ - [rt.cpan.org #16486] printf missing value in HiRes.t
+ - add constants CLOCKS_PER_SEC, CLOCK_SOFTTIME, TIMER_ABSTIME
+ - tiny typo fixes
+
+1.83 [2005-11-19]
+ - has_symbol() was wrong since e.g. ITIMER_VIRTUAL is exported
+ via @EXPORT_OK even when it is not available. This is heinous.
+ @EXPORT_OK should be determined at Makefile.PL time.
+ - be more lenient is testing clock_gettime(): allow more slop,
+ and retry up to three times, sleeping a random nap between
+ the retries
+ - human months are one-based (noticed by Anton Berezin)
+
+1.82 [2005-10-06]
+ - CLOCK_REALTIME is an enum value (of the clockid_t enum)
+ in HP-UX (and might be so elsewhere, too), debugged by
+ H. Merijn Brand
+ - include const-c.inc as late as possible (from Randy Kobes,
+ [rt.cpan.org #15552] to avoid undefined usleep() on Win32
+
+1.81 [2005-11-05]
+ - try to be more robust and consistent in the detection of
+ CLOCK_REALTIME and ITIMER_VIRTUAL in HiRes.t: the proper
+ way is
+
+ sub has_symbol {
+ my $symbol = shift;
+ eval 'import Time::HiRes qw($symbol)';
+ return 0 unless $@ eq '';
+ return exists ${"Time::HiRes::$symbol"};
+ }
+
+ and then use
+
+ &FOO_BAR
+
+ in the test. All these moves are needed because
+
+ 1) one cannot directly do eval 'Time::HiRes::FOO_BAR'
+ because FOO_BAR might have a true value of zero
+ (or in the general case an empty string or even undef)
+
+ 2) In case FOO_BAR is not available in this platform,
+ &FOO_BAR avoids the bareword warning
+
+ - wait more (1.5 seconds instead of 0.1) for the CLOCK_REALTIME test
+ but expect the 'customary' slop of 0.20 instead of 0.25
+ - fixed inside a comment HAS_POLL -> TIME_HIRES_NANOSLEEP
+ - at the end of HiRest.t tell how close we were to termination
+
+1.80 [2005-11-04]
+ - Gisle noticed a mistake (using HAS_NANOSLEEP) in 1.79
+
+1.79 [2005-11-03]
+ - try nanosleep for emulating usleep -- may help in some weird
+ embedded realtime places which have nanosleep but neither usleep
+ nor select nor poll (doesn't have to be weird embedded realtime
+ place, though -- in many places usleep is nanosleep anyway)
+ - try poll for emulating usleep -- this may help some obscure/old
+ SVR4 places that have neither usleep nor select
+ - a redundant test guard in HiRes.t
+
+1.78 [2005-11-03]
+ - ITIMER_VIRTUAL detection in HiRes.t had problems (that we cannot
+ in the general case fail already at 'use' phase is suboptimal)
+ - fixes to the documentation of clock_gettime() and clock_getres()
+
+1.77 [2005-11-03]
+ - add support for the POSIX clock_gettime() and clock_getres(),
+ if available, either as library calls or as syscalls
+ - be more defensive about missing functionality: break out
+ early (during 'use') if no e.g. clock_getres() is available,
+ and protect our back by trapping those cases also in HiRes.xs
+ - the test added in 1.76 could cause an endless loop e.g. in Solaris,
+ due to mixing of sleep() and alarm() (bad programmer, no cookie!)
+
+1.76 [2005-10-22]
+ - testing for nanosleep had wrong logic which caused nanosleep
+ to become undefined for e.g. Mac OS X
+ - added a test for a core dump that was introduced by Perl 5.8.0
+ safe signals and was fixed for the time of 5.8.1 (one report of
+ the core dump was [perl #20920]), the test skipped pre-5.8.1.
+ - *cough* s/unanosleep/nanosleep/g; *cough*
+
+1.75 [2005-10-18]
+ - installation patch from Gisle Aas: in Perls 5.8.x and later
+ use MakeMaker INSTALLDIRS value of 'perl' instead of 'site'.
+
+1.74 [2005-09-19]
+ - [cpan #14608] Solaris 8 perl 5.005_03 File::Spec module does not have method rel2abs
+ (the workaround is not to use rel2abs, should not be necessary)
+ - [cpan #14642] U2time wrongly exported on the C API
+ (patch supplied by the reporter, SALVA@cpan.org)
+ - add release dates to Changes
+
+1.73 [2005-08-16]
+ - Time::HiRes::nanosleep support for Solaris [PATCH]
+ (POSIX::uname() not available if building with core perl,
+ from Gisle Aas, via perl5-porters, perl change #25295)
+
+1.72 [2005-07-01]
+ - going back to the 1.68 loader setup (using DynaLoader)
+ since too many weird things starting breaking
+ - fix a typo in José Auguste-Etienne's name
+
+1.71 [2005-06-28]
+ - a thinko in the nanosleep() detection
- move more changes stuff from the README to Changes
- add -w to the Makefile.PL
-1.70 - oops in 1.69 about @ISA (not affecting anything but silly)
+1.70 [2005-06-26]
+ - oops in 1.69 about @ISA (not affecting anything but silly)
- add copyright 2005 to HiRes.pm
- add copyright and license to HiRes.xs
- add copyrights 2003, 2004, 2005 to README
-1.69 - actually run a test for nanosleep
+1.69 [2005-06-25]
+ - actually run a test for nanosleep
(if there is no $Config{d_nanosleep}) since e.g. in AIX 4.2
it seems that one can link in nanosleep() but then calling
it fails instantly and sets errno to ENOSYS (Not implemented).
(realtime POSIX?) libs and whatnot, but in the general case
running a real test case is better. (Of course, this change
will no doubt run into portability problems because of the
- execution step...)
- (from José Auguste-tienne)
+ execution step...) Note that because of hysterical raisins
+ most Perls do NOT have $Config{d_nanosleep} (scanning for
+ it by Configure would in many platforms require linking in
+ things like -lrt, which would in many platforms be a bad idea
+ for Perl itself).
+ (from José Auguste-Etienne)
- support XSLoader also since it's much faster
(from Alexey Tourbin)
- add SEE ALSO (BSD::Resource and Time::TAI64)
-1.68
+1.68 [2005-05-14]
- somehow 1.67 had a lot of doubled lines (a major cut-and-paste
error suspected), but miraculously it still worked since the
doubling took place below the __END__ token
(part of perl change #24271)
- minor doc tweaks
-1.67
+1.67 [2005-05-04]
- (internal) don't ignore the return value of gettimeofday()
- (external) return undef or an empty if the C gettimeofday() fails
(affects Time::HiRes gettimeofday() and the hires time())
-1.66
+1.66 [2004-12-19]
- add nanosleep()
- fix the 'hierachy' typo in Makefile.PL [rt.cpan.org #8492]
- should now build in Solaris [rt.cpan.org #7165] (since 1.64)
- should now build in Cygwin [rt.cpan.org #7535] (since 1.64)
- - 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
+ - close also [rt.cpan.org #5933] "Time::HiRes::time does not
+ pick up time adjustments like ntp" since ever reproducing it
+ (and therefore verifying a possible fix) in the same environment
has become rather unlikely
-1.65
+1.65 [2004-09-18]
- one should not mix u?alarm and sleep (the tests modified
by 1.65, #12 and #13, hung in Solaris), now we just busy
loop executing an empty block
sleeps and alarms
- small spelling fixes
-1.64
+1.64 [2004-09-16]
- regenerate ppport.h with Devel::PPPort 3.03,
now the MY_CXT_CLONE is defined in ppport.h,
we no more need to do that.
changed to sleep(1)s, the tests still pass but no hang after
a few hundred repeats.
-1.63
+1.63 [2004-09-01]
- Win32 and any ithread build: ppport.h didn't define
- MY_CXT_CLONE, which seems to be a Time-HiResism.
+ MY_CXT_CLONE, which seems to be a Time-HiRes-ism.
-1.62
+1.62 [2004-08-31]
- Skip testing if under PERL_CORE and Time::HiRes has not
been Configured (from Marcus Holland-Moritz, core change
#23246)
- Can't use newSVpvf for <= 5.003.
(most of the changes from Marcus)
-1.61
+1.61 [2004-08-21]
- Win32: reset reading from the performance counters every
five minutes to better track wall clock time (thanks to
PC timers being often quite bad), should help long-running
programs.
-1.60
+1.60 [2004-08-15]
- Win32: Patch from Steve Hay
[PATCH] Re: [perl #30755] [Win32] Different results from Time::HiRes::gettimeofdayunder the debugger
to [perl #30755] reported by Nigel Sandever
after that keep using -lrt, patch from Alan Burlison,
bug reported in [cpan #7165]
-1.59
+1.59 [2004-04-08]
- Change the Win32 recalibration limit to 0.5 seconds and tweak
the documentation to blather less about the gory details of the
Win32 implementation and more about the complications in general
of meddling with the system clock.
-1.58
+1.58 [2004-04-08]
- Document the 1.57 change better.
-1.57
+1.57 [2004-07-04]
- Win32/Cygwin/MinGW: if the performance counter drifts by more
than two seconds from the system clock (due to ntp adjustments,
for example), recalibrate our internal counter: from Jan Dubois,
based on [cpan #5933] by Jerry D. Hedden.
-1.56
+1.56 [2004-29-02]
- Give a clearer message if the tests timeout (perl change #22253)
- Don't use /tmp or its moral equivalents (perl bug #15036,
perl change #22258)
-1.55
+1.55 [2004-01-14]
- Windows: mingw32 patch from Mike Pomraning (use Perl's Const64()
instead of VC-specific i64 suffix)
-1.54
+1.54 [2003-12-31]
- Solaris: like Tru64 (dec_osf) also Solaris need -lrt for nanosleep
-1.53
+1.53 [2003-12-30]
- Windows: higher resolution time() by using the Windows
performance counter API, from Jan Dubois and Anton Shcherbinin.
The exact new higher resolution depends on the hardware,
but it should be quite a bit better than using the basic
Windows timers.
-1.52
+1.52 [2003-10-28]
- In AIX (v?) with perl 5.6.1 the HiRes.t can hang after
the subtest 18. No known analysis nor fix, but added
an alarm (that requires fork() and alarm()) to the test.
-1.51
+1.51 [2003-09-22]
- doc tweaks from mjd (perl change #20456)
- NCR MP-RAS hints file added (svr4.pl) (perl change #21249)
-1.50
+1.50 [2003-08-02]
- add a message (for non-core builds) to Makefile.PL about
the LC_ALL=C workaround
- &Time::HiRes::d_nanosleep was broken (perl change #20131)
- MPE/iX tweak (perl change #20042)
- do not use HAS_NANOSLEEP (perl change #19898)
-1.49
+1.49 [2003-06-23]
- UVuf for non-IVSIZE platforms (from Keiichiro Nagano)
- OS/2 can always mix subsecond sleeps with signals
(part of perl change #19789)
-1.48
+1.48 [2003-06-04]
- workaround for buggy gcc 2.95.3 in openbsd/sparc64
(perl change #19592)
-1.47
+1.47 [2003-05-03]
- do not use -lrt in Linux (from March Lehmann, perl change #19449)
- unnecessary (nanosleep is in libc anyway)
- harmful (-lrt slows down execution)
- incompatible (with many distributions' pthreads)
-1.46
+1.46 [2003-04-25]
- do not create files in blib directories under core
(perl change #19160, from rgs)
- detypo s/VTLARM/VTARLM/ (perl change #19328, from mjd)
-1.45
+1.45 [2003-04-01]
- guarantee that $xdefine in HiRes.t is always defined
(perl change #19109, from IlyaZ)
- a cleaner way to detect PERL_CORE (perl change #19111,
from IlyaZ)
-1.44
+1.44 [2003-03-30]
- add hints/irix.pl to turn off overly POSIX flags that
cause hide struct timespec to be hidden (and compilation
to fail) (bleadperl change #19085)
- documentation tweaks
-1.43
+1.43 [2003-03-11]
- add c:/temp to the list of temp directories to probe
so that cygwin (and win*?) builds are happy. This was
needed at least in my cygwin 1.3.20/w2k setup.
-1.42
+1.42 [2003-01-07]
- modernize the constants code (from Nicholas Clark)
-1.41
+1.41 [2003-01-03]
- At some point the ability to figure our the correct incdir
for EXTERN.h (either a core perl build, or an installed perl)
had broken (which lead into all test compiles failing with
Now stole a trick from the Encode that sets $ENV{PERL_CORE}
right, and both styles of build should work again.
-1.40
+1.40 [2003-01-03]
- Nicholas Clark noticed that the my_catdir() emulation function
was broken (which means that we didn't really work for Perls
5.002 and 5.003)
and strict clean
- tightened up the Makefile.PL output, less whitespace
-1.39
+1.39 [2003-10-20]
- fix from Craig Berry for better building in VMS with PERL_CORE
-1.38
+1.38 [2003-10-13]
- no functional changes
- move lib/Time/HiRes.pm as Hires.pm
- libraries scanning was slightly broken (always scanned
for a library even when $Config{libs} already had it)
-1.37
+1.37 [2003-09-23]
- Ray Zimmerman ran into a race condition in Mac OS X.
A 0.01-second alarm fired before the test expected.
The test first slept indefinitely (blocking for signals)
environment variable VERBOSE to a true value to see the
details (the probing command and the possible errors)
-1.36
+1.36 [2003-09-12]
- do not clear MAN3PODS in Makefile.PL (Radoslaw Zielinski)
- INSTALLDIRS => 'perl' missing which means that Time::HiRes
cannot be upgraded from CPAN to override the 5.8.0 version
if $ENV{PERL_CORE} (Hugo van der Sanden)
- add documentation about the restart of select() under alarm()
-1.35
+1.35 [2003-08-24]
- small documentation tweaks
-1.34
+1.34 [2003-08-22]
- better VMS operation (Craig Berry)
-1.33
+1.33 [2003-08-20]
- our time machine is accelerating: now works with Perl 5.004_01
(tried with 5.003_07 and 5.002 but I get segmentation faults
from running the Makefile.PL with those in Tru64 4.0D)
-1.32
+1.32 [2003-08-20]
- backward compatibility (pre-5.6.0) tweaks:
- no XSLoader in 5.00503, use DynaLoader instead
- no SvPV_nolen, either
(since older Perl do not have them in %Config, and even
5.8.0 does not probe for nanosleep)
-1.31
+1.31 [2003-08-19]
- backward compatibility (pre-5.6.1) tweaks:
- define NV if no NVTYPE
- define IVdf if needed (note: the Devel::PPPort
back to Perl 5.00404), and using nanosleep() (if available) for
subsecond sleeps.
-1.30
+1.30 [2003-08-16]
- release 1.29_02 as 1.30
version. Note also that in 1.30 Wegscheid turns over the maintenance
to Jarkko Hietaniemi.
-1.29_02
+1.29_02 [2003-08-16]
- fix a silly unclosed comment typo in HiRes.xs
- document and export REALTIME_REALPROF (Solaris)
-1.29_01
+1.29_01 [2003-08-16]
- only getitimer(ITIMER_REAL) available in Cygwin and Win32
(need to patch this also in Perl 5.[89])
- remove CVS revision log from HiRes.xs
-1.29_00
+1.29_00 [2003-08-14]
The following numbered patches refer to the Perl 5.7 changes,
you can browse them at http://public.activestate.com/cgi-bin/perlbrowse
- 13422: XS segfault, from Marc Lehmann
- 13378: whether select() gets restarted on signals, depends
- 13354: timing constraints, again, from Andy Dougherty
- - 13278: can't do subecond alarms with ualarm;
+ - 13278: can't do subsecond alarms with ualarm;
break out early if alarms do not seem to be working
- 13266: test relaxation (cygwin gets lower hires
times than lores ones)
- fix EXPORT_FAIL.
This work was all done by Roderick Schertler
<roderick@argon.org>. If you run Linux or
- one of the other ualarm-less platoforms, and you like this
+ one of the other ualarm-less platforms, and you like this
module, let Roderick know; without him, it still wouldn't
be working on those boxes...
- Makefile.PL: figure out what routines the OS has and
https://perl5.git.perl.org / perl5.git / blobdiff