changes

source of perl for linux application,

	  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, [e-mail])
	- 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	[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	[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).
	  This may be fixable in the AIX case by figuring out the right
	  (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...)  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	[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
	- undef Pause() before defining it to avoid redefinition warnings
	  during compilation in case perl.h had already defined Pause()
	  (part of perl change #24271)
	- minor doc tweaks

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	[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
	  (and therefore verifying a possible fix) in the same environment 
	  has become rather unlikely

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
	- in the documentation underline the unspecificity of mixing
	  sleeps and alarms
	- small spelling fixes

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.

	- the test #12 would often hang in sigsuspend() (at least that's
	  where Mac OS X' ktrace shows it hanging).  With the sleep()s
	  changed to sleep(1)s, the tests still pass but no hang after
	  a few hundred repeats.

1.63	[2004-09-01]
	- Win32 and any ithread build: ppport.h didn't define
	  MY_CXT_CLONE, which seems to be a Time-HiRes-ism.

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)
	- Use ppport.h generated by Devel::PPPort 3.01,
	  allowing cutting away our own portability code.
	- Don't use $ENV{PERL_CORE} for < 5.6.0.
	- Don't use "for my $i" for <= 5.003.
	- Don't use Pause() for <= 5.003.
	- Can't use newSVpvf for <= 5.003.
	(most of the changes from Marcus)

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	[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

	- Cygwin: Use the Win32 recalibration code also in Cygwin if the
	  <w32api/windows.h> APIs are available.  Cygwin testing by
	  Yitzchak Scott-Thoennes.

	- Solaris: use -lposix4 to get nanosleep for Solaris 2.6,
	  after that keep using -lrt, patch from Alan Burlison,
	  bug reported in [cpan #7165]

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	[2004-04-08]
	- Document the 1.57 change better.

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	[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	[2004-01-14]
	- Windows: mingw32 patch from Mike Pomraning (use Perl's Const64()
	  instead of VC-specific i64 suffix)

1.54	[2003-12-31]
	- Solaris: like Tru64 (dec_osf) also Solaris need -lrt for nanosleep

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	[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	[2003-09-22]
	- doc tweaks from mjd (perl change #20456)
	- NCR MP-RAS hints file added (svr4.pl) (perl change #21249)

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)
	- the nanosleep() probe was broken (perl change #20061)
	- use existence instead of definedness for feature probes
	  (perl change #20043)
	- MPE/iX tweak (perl change #20042)
	- do not use HAS_NANOSLEEP (perl change #19898)

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	[2003-06-04]
	- workaround for buggy gcc 2.95.3 in openbsd/sparc64
	  (perl change #19592)

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	[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	[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	[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	[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	[2003-01-07]
	- modernize the constants code (from Nicholas Clark)

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
	  a core perl build, but thanks to the robustness of Makefile.PL
	  nothing of this was visible).  The brokenness seemed to be
	  caused by $ENV{PERL_CORE} not being on for core builds?
	  Now stole a trick from the Encode that sets $ENV{PERL_CORE}
	  right, and both styles of build should work again.

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)
	- inspired by fixing the above made the whole Makefile.PL -w
	  and strict clean
	- tightened up the Makefile.PL output, less whitespace

1.39	[2003-10-20]
	- fix from Craig Berry for better building in VMS with PERL_CORE

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	[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)
	  and only after that tested for the signal having been sent.
	  Since the signal had already been sent, the test #12 never
	  completed.  The solution: test first, then block.
	- default to being silent on all probing attempts, set the
	  environment variable VERBOSE to a true value to see the
	  details (the probing command and the possible errors)

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
	  (Guido A. Ostkamp)