[ViewVC] Diff of: cvs/Coro/Changes

Comparing Coro/Changes (file contents):
Revision 1.112 by root, Wed Oct 19 19:04:46 2005 UTC vs.
Revision 1.673 by root, Sun Sep 3 23:36:01 2017 UTC

1	Revision history for Perl extension Coro.	1	Revision history for Perl extension Coro.
2		2
		3	TODO: should explore PerlIO::coroaio (perl leaks like hell).
		4	TODO: channel->maxsize(newsize)?
		5	TODO: __GCC_HAVE_DWARF2_CFI_ASM
		6	TODO: swap_sv, maybe add scope_swap_sv?
		7	TODO: croak when async_pool tries to run canceled thread?
		8	TODO: how to debug safe_cancle failure (vebrose mode? show how to make backtrace?)
		9
		10	- minor code cleanups.
		11
		12	6.514 Thu Aug 31 18:25:31 CEST 2017
		13	- safe_cancel no longer croaks when called on already-destroyed
		14	thread, but instead "just works".
		15
		16	6.513 Sat Jul 15 01:18:51 CEST 2017
		17	- experimental 5.22 comaptibility changes (PadlistNAMES).
		18	- removed attributes example and made sure the other examples
		19	still work.
		20	- fix some statevar types for newer perls, should be of no consequence.
		21
		22	6.512 Fri Jul 14 05:03:17 CEST 2017
		23	- seems to pass test suite down till 5.8.9, so make this the
		24	minimum requirement in Makefile.PL.
		25	- experimental 5.24 compatibility changes (SUB_ARGARRAY).
		26	- experimental 5.26 compatibility changes (PL_comppad -> PADOFFSET).
		27	- disable FORTIFY_SOURCE to avoid broken (but well-intentioned)
		28	fortified longjmp variants in some libcs.
		29	- re-try JIT allocation without PROT_EXEC, to hopefully improve
		30	portability (still doesn't seem to work around broken selinux
		31	mmap everywhere).
		32	- speling fixes (Xavier Guimard).
		33
		34	6.511 Sun Jun 26 23:44:50 CEST 2016
		35	- make it compile with threaded perls again.
		36	- simplify and speed up __DIE__ and __WARN__ handling.
		37
		38	6.51 Sat Jun 25 20:57:20 CEST 2016
		39	- 6.5 release didn't compile on most older perls due to
		40	a logic error enabling experimental 5.24 code for all versions.
		41	- since various broken or deficient patches float around
		42	to work around the vtbl API breakage in perl, let's provide
		43	our own workaround, which seems to be much less invasive
		44	and more compatible than the approaches seen so far. YMMV.
		45	- work around assertion failure in perl_destruct on 5.24
		46	(analyzed by Dave Mitchell).
		47
		48	6.5 Wed Jun 22 22:23:50 CEST 2016
		49	- swap_sv swapping order was not symmetrical, causing
		50	wrong swaps when swap_sv was used multiple times on the
		51	same sv in the same thread.
		52	- swap_sv calls can now be undone by calling it again
		53	with the same variables.
		54	- swap_sv calls will now be undone in async_pool threads.
		55	- split Coro::Semaphore::up/adjust into separate xs functions
		56	for better error reporting, at slight codesize increase.
		57	- (libcoro) arm assembly support, please test and report.
		58	- adjust to PL_savestack changes in perl 5.24 (adapted from
		59	the debian patch, which unfortunately gets it wrong).
		60
		61	6.49 Sat Oct 17 01:40:12 CEST 2015
		62	- throwing an exception to a thread waiting in
		63	Coro::Handle using Coro::EV did not stop the watchers,
		64	causing the next call to fail (testcase by Martin Pritchard).
		65	- bump minimum perl version to 5.10.
		66
		67	6.48 Sun Oct 4 19:03:51 CEST 2015
		68	- fix memory leak when Coro::Handle uses Coro::EV internally
		69	(testcase by Sten Sten).
		70	- update code to libev 4 API (internally, Coro still used the
		71	version 3 API calls).
		72	- remove unused hv_sig.
		73
		74	6.47 Sat Jul 11 03:58:20 CEST 2015
		75	- swap_svs - NVs can be in the SV head beginning with 5.20.
		76
		77	6.46 Tue Jun 30 14:36:30 CEST 2015
		78	- restore portability to perls with windows fork emulation
		79	(patch by Petr Písař).
		80
		81	6.45 Tue Jun 30 01:40:08 CEST 2015
		82	- restore portability to perl 5.16 and below.
		83
		84	6.44 Tue Jun 30 00:41:54 CEST 2015
		85	- avoid segfaulting (or worse) when tracing a canceled thread.
		86	- the Event module silently broke it's public hook API, causing
		87	failures on perls compiled with -Duselongdouble. Requiring
		88	the latest version of Event because I don't know which release
		89	changed this (it's not mentioned in the ChangeLog).
		90	- allow xs level enterleave hooks via CoroAPI.
		91
		92	6.43 Thu Jun 4 15:38:14 CEST 2015
		93	- use stability canary.
		94	- port to stableperl-5.22.0-1.001.
		95	- update libecb.
		96
		97	6.42 Wed Feb 11 20:29:52 CET 2015
		98	- Coro::SemaphoreSet->try did not actually work (analyzed by
		99	SATO Kentaro).
		100	- upgrade libecb to be C11 compliant.
		101
		102	6.41 Sat Sep 6 22:08:46 CEST 2014
		103	- restore portability to perl 5.8.x.
		104	- give new Coro's a valid GvHV(PL_hintgv) - this is slow and takes
		105	up some memory, but fixes "use feature" and similar modules
		106	when used inside a Coro.
		107	- allow zero as argument to Coro::Channel to mean the same thing
		108	as no argument. this works with older versions as well,
		109	but wasn't legal until now.
		110	- slightly better c header file detection.
		111
		112	6.39 Mon Jun 2 00:00:08 CEST 2014
		113	- work around more incompatible changes in 5.20.
		114
		115	6.38 Sun Jun 1 21:54:23 CEST 2014
		116	- check that perl slots actually have enough space to hold
		117	interpreter variables.
		118	- untested port to perl 5.19 (64 bit tmps indices) (reported
		119	by Andreas König).
		120	- croak when cancel is called without a thread context.
		121
		122	6.37 Tue Mar 4 13:27:33 CET 2014
		123	- sigh, removed leftover debugging code from debugging a
		124	perl bug, of all things.
		125
		126	6.36 Tue Mar 4 07:11:59 CET 2014
		127	- semaphores would not clear the destroy hook when interrupted
		128	by ->throw, causing segfaults or worse.
		129	- ->throw on a thread waiting for a semaphore did not acquire
		130	the semaphore, but also didn't wake up other waiters,
		131	possibly causing a deadlock.
		132	- "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
		133	to report a full stacktrace, which should help find out
		134	where the actual call is.
		135	- "atomically" destroy data in slf_destroy, because it is
		136	the right thing to do, just in case.
		137	- disable ecb.h libm dependency, to compile on ancient systems
		138	or under adverse conditions.
		139
		140	6.33 Mon Nov 18 11:26:27 CET 2013
		141	- do not crash when freeing padlists with holes (in 5.18).
		142	- tentative SVt_BIND 5.19 port/fix.
		143
		144	6.32 Tue Nov 5 15:35:35 CET 2013
		145	- use a new algorithm to derive padlists for perl 5.18. The old
		146	one could lead to 0-pointer accesses inside perl (reported
		147	by Darin McBride).
		148
		149	6.31 Thu May 9 07:39:48 CEST 2013
		150	- Coro::AIO requests would crash if the thread was ready'd
		151	while the request was ongoing.
		152
		153	6.29 Wed May 8 02:55:18 CEST 2013
		154	- when an on_destroy handler destructs the coro currently being
		155	destructed a perl scalar could be accessed after being freed,
		156	likely causing a crash.
		157
		158	6.28 Wed Mar 6 06:58:02 CET 2013
		159	- clean remnants of existing __DIE__ and __WARN__ handlers so
		160	they lose their magic and will not cause segfaults later
		161	(testcase by Andrey Sagulin).
		162	- improved Coro::State documentation a bit.
		163	- Coro::Debug::command now flushes the output.
		164	- add hack detection code for x32 abi, because the braindead slugs
		165	who designed that made it look exactly like x86_64 without
		166	providing proper compile time symbols to test for it. as a result,
		167	this detection cannot work reliably.
		168	- valgrind stack registering was broken.
		169	- do not rely on Time::HiRes anymore in Coro::Debug.
		170
		171	6.23 Fri Dec 7 23:36:37 CET 2012
		172	- use experimental fiber implementation on native windows
		173	perls.
		174	- use sizeof (void *) as multiplication factor for stack sizes,
		175	to accomodate the totally braindamaged microsoft 64 bit "os".
		176	- changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
		177	activeperl 5.16 crashes when PerlIO_define_layer is called due
		178	to some bug in the perl dll, strawberry perl at least passes
		179	the testsuite.
		180	- implement Coro::Handle->peeraddr/host/port, for slightly
		181	improved compatibility with LWP.
		182	- implement 5.17 compatibility by almost blindly applying a
		183	good-looking patch by Father Chrysostomos.
		184	- move stack management functions into libcoro 3.
		185	- libcoro version 3 "released".
		186	- support magic values as timed_io_once args.
		187	- recommend AnyEvent 7+ or EV 4+, also require EV
		188	version 4 or newer for Coro::EV.
		189
		190	6.10 Tue Oct 9 01:14:27 CEST 2012
		191	- updated ecb.h, it had a typo that caused it to not compile on many
		192	big endian systems (reported by many people).
		193	- disable memory fences in ecb.h to improve portability.
		194
		195	6.09 Sat Oct 6 23:25:02 CEST 2012
		196	- Coro::EV I/O watchers were not interruptible by exceptions
		197	(Coro::State::throw) (testcase by sten).
		198	- ->throw now puts threads into the ready queue, as this seems to
		199	be expected by existing code, and code that doesn't cope with spurious
		200	wakeups needs fixing anyway.
		201	- use fd -1 in mmap.
		202	- cast I32 to int in error message printf.
		203	- warn about broken so-called "hardened" kernels.
		204
		205	6.08 Fri Apr 13 12:05:47 CEST 2012
		206	- be more aggressive about exiting like perl does - formerly,
		207	exiting from the non-main thread would not execute END blocks.
		208
		209	6.07 Fri Nov 11 21:21:48 CET 2011
		210	- work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
		211	- update ecb.h.
		212
		213	6.06 Mon Aug 8 23:59:48 CEST 2011
		214	- cygwin unfortunately patches the stack at runtime, so we use the pthreads
		215	backend, which is an order of magnitude slower. unfortunately, cygwins
		216	pthread implementation isn't very complete either, so allocate the stack
		217	twice just to be sure.
		218	(note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
		219	in its ithreaded perl - best recompile cygwin and use the 'w'indows
		220	backend for much better performance. also disable ithreads for
		221	even better performance...).
		222
		223	6.05 Thu Aug 4 21:36:36 CEST 2011
		224	- blush, condvar values would not be propagated from send to recv anymore
		225	(reported by Chip Salzenberg).
		226	- use exponential increase for the readline buffer length in
		227	Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
		228
		229	6.04 Wed Aug 3 17:15:45 CEST 2011
		230	- use even more efficient and more compatible condvars for
		231	compatibility to AnyEvent 6.x :)
		232	- more inconsequential ecb.h updates.
		233
		234	6.03 Wed Aug 3 11:41:30 CEST 2011
		235	- change how Coro patches AnyEvent condvars for compatibility to
		236	AnyEvent 6.x.
		237	- update ecb.h, to no longer include <pthread.h> in case WinNT.h
		238	hasn't been included.
		239
		240	6.02 Wed Jul 13 04:35:19 CEST 2011
		241	- "improve portability to Gentoo" - gentoo manages to put perl variables
		242	in memory areas that are farther than 2gb apart, which the jit couldn't
		243	handle and barfed. now it's just a bit slower on gentoo and similar
		244	systems.
		245
		246	6.01 Sun Jul 3 12:31:14 CEST 2011
		247	- workarounds are good, but the test for whether pthreads are used
		248	was not good. this one should be better.
		249	- check differently whether gcc generates cfi instructions itself.
		250
		251	6.0 Wed Jun 29 19:43:35 CEST 2011
		252	- INCOMPATIBLE CHANGE: unreferenced coro objects will now be
		253	destroyed and cleaned up automatically (e.g. async { schedule }).
		254	- implement a JIT compiler for part of the thread switch code,
		255	which gives a 50% speed improvement on threaded perls, and
		256	about 4% on non-threaded perls (so threaded perls now finally
		257	reach about half the speed of non-threaded perls).
		258	- slightly modernise Coro::Intro, add section about rouse functions.
		259	- avoid DEFSV and ERRSV, giving another 10% improvement
		260	in thread switching.
		261	- Coro::State->is_destroyed is now called is_zombie.
		262	- implement a Coro->safe_cancel method that might fail, but
		263	cancels in a "safer" way if it succeeds.
		264	- add preliminary support for DEBUGGING perls.
		265	- get rid of two hash-accesses when initialising a new Coro - this
		266	speeds up coro creation by almost a factor of two.
		267	- croak when a coro that is being cancelled tries to block
		268	(e.g. while executing a guard block), instead of crashing or
		269	deadlocking.
		270	- use a more robust and also faster method to identify Coro::State
		271	objects - speeds up everything a bit.
		272	- implement Coro->cancel in XS for a 20% speed improvement, and to
		273	be able to implement mutual cancellation.
		274	- speed up context switches by a percent or two by more efficiently
		275	allocating context stack entries.
		276	- implement Coro->join and Coro->on_destroy in XS for a speedup and
		277	a reduction in memory use.
		278	- cancelling a coro while it itself is cancelling another coro is
		279	now supported and working, instead of triggering an assertion.
		280	- be a bit more crash-resistant when calling (buggy) on_destroy
		281	callbacks (best effort).
		282	- move on_destroy into the slf_frame, to allow extension slf
		283	functions to have destructors.
		284	- get rid if coro refcounting - simply crash in other interpreter
		285	threads by nulling the pointers on clone.
		286	- simplify warn/die hook handling when loading Coro - the convoluted
		287	logic seems to be no longer neccessary.
		288	- use libecb instead of our own home-grown gcc hacks.
		289	- document alternatives to Coro::LWP. Please use them :)
		290	- work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
		291	sigaltstack. Really. wine suffers from it, erlang suffers from it,
		292	and it's known since at least 2006.
		293
		294	5.372 Wed Feb 23 06:14:30 CET 2011
		295	- apparently mingw doesn't provide a working gettimeofday, try to
		296	work around that by relying on Time::HiRes (indirectly brought to
		297	my attention by Max Maischein).
		298	- fix some portability issues when Time::HiRes was used.
		299
		300	5.371 Mon Feb 21 14:36:08 CET 2011
		301	- backport to windows process emulation code again.
		302
		303	5.37 Sat Feb 19 07:49:44 CET 2011
		304	- add a big "Coro thread life cycle" section to "man Coro".
		305	- try a tentative workaround against the breakage that 5.13 has
		306	introduced without depreciation period. sigh.
		307	- no longer use Time::HiRes if gettimeofday is available, which
		308	saves quite a lot of memory.
		309
		310	5.36 Sun Feb 13 05:33:41 CET 2011
		311	- automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
		312	Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
		313	method call.
		314	- undocument Coro::Timer::sleep and obsolete whole module.
		315	- optimise Coro::Timer::timeout memory and cpu usage.
		316	- slightly updated Coro::Intro for recent changes.
		317	- do not initialise PL_dirty anymore.
		318
		319	5.25 Thu Nov 11 01:08:39 CET 2010
		320	- try a different approach on netbsd - netbsd 5 finally has marginally
		321	working pthreads, but still broken ucontext/sigaltstack.
		322	- openbsd 4.8 finally got their act together, Coro works out of the box
		323	with asm, setjmp and pthreads (no change, just informational).
		324
		325	5.24 Sat Oct 23 11:27:12 CEST 2010
		326	- port to the EV 4.0 API.
		327	- work around bugs in mingw32, making strawberry perl work
		328	out of the box.
		329	- correctly modify Coro::AIO function prototypes
		330	so that they reflect the "no optional parameters" rule.
		331	- "ported" libcoro to C++.
		332
		333	5.23 Mon May 17 18:50:42 CEST 2010
		334	- be more resistant to ordering changes when initialising
		335	Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
		336	Waldorf).
		337	- document that perl 5.12 deliberately removed support for cloning.
		338
		339	5.22 Wed Apr 14 03:55:35 CEST 2010
		340	- correctly return udnef on errors in Coro::Handle::read/write
		341	(testcase by Marc Mims).
		342	- convert Coro::Util into a "perl compatibility wrapper" - the functions
		343	are less useful now, but are drop-in replacements for existing
		344	functions, listing better alternatives in the documentation. This also
		345	fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
		346	with Coro::Util::inet_aton.
		347	- do not override $Coro::idle unconditionally in Coro.pm, as other
		348	modules could have provided their own idle coro already
		349	(for exmaple, Coro::AnyEvent).
		350	- fix Coro::Util::gethost* functions.
		351	- Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
		352
		353	5.21 Wed Dec 16 07:19:51 CET 2009
		354	- automatically load Coro::AnyEvent when AnyEvent and Coro are used
		355	together.
		356	- add some examples on how to combine other event loops with Coro in
		357	Coro::AnyEvent, and how to run it (and not to block). Seems to be
		358	the most common source of confusion.
		359	- try to catch people naively blocking in an event callback.
		360	- work around the perl filehandle bug issue in conjunction with
		361	older common::sense (as indirectly pointed out by ZSystem).
		362	- clarify the "not from signal handlers" section.
		363
		364	5.2 Sun Oct 4 14:54:24 CEST 2009
		365	- Coro::Storable destroyed the prototypes of the functions it wrapped.
		366	- export rouse_cb and rouse_wait by default now.
		367	- fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
		368	- new method $state->swap_sv.
		369	- added section on "windows process emulation" to the manpage,
		370	after a not-so-fruitful (nor-friendly) "discussion" with chip
		371	salzenberg (discussion implies arguments, but his only arguments
		372	were ad-hominems, one wonders why he started it in the first
		373	place). I hope this explains it well enough for him to understand,
		374	and maybe well enough for others to understand.
		375	- use common::sense everywhere now.
		376	- idle callbacks are no longer supported, use idle coros instead.
		377	- print a thread listing when a deadlock is detected.
		378
		379	5.17 Sat Aug 22 23:09:31 CEST 2009
		380	- work around a bug in the perl debugger causing crashes
		381	when running under the debugger by marking _pool_handler as nodebug.
		382	- speed up Coro::async considerably.
		383	- try some hacks to get netbsd to work "more often" - their broken
		384	setjmp/longjmp, ucontext and phtreads are really hard on Coro.
		385	- convert Coro to AE 5.0 API.
		386
		387	5.162 Tue Jul 28 04:04:03 CEST 2009
		388	- perl 5.8.2 is now minimum requirement.
		389	- skip t/19_handle.t on broken windows perls.
		390
		391	5.161 Wed Jul 22 04:47:38 CEST 2009
		392	- Coro::AnyEvent::poll could have a different prototype when EV was
		393	used as backend (analyzed by Tatsuhiko Miyagawa).
		394	- Coro::AnyEvent errornously initialised the event loop when loaded,
		395	not on demand.
		396	- try to workaround rare */t/01_unblock.t failures.
		397
		398	5.16 Tue Jul 21 01:44:37 CEST 2009
		399	- Coro::AnyEvent failed to hook into the event loop
		400	when no threads had been readied between detecting
		401	the event loop and actually running it.
		402	- considerably speed up Coro::Select by taking avdantage
		403	of AnyEvent > 4.8 and some other optimisations.
		404	- implement paragraph readline mode in Coro::Handle
		405	(based on patches by Zsbán Ambrus).
		406	- replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
		407	and analyzed by Yasuhiro MATSUMOTO).
		408	- clarified libcoro license and copyright.
		409	- someone stole my EXTRA_META!!!
		410	- implement Coro::Select::patch_pp_sselect and it's brother,
		411	for hardcode select overriding.
		412
		413	5.151 Mon Jul 6 05:41:57 CEST 2009
		414	- backport to windows process emulation code again (patch by
		415	Yasuhiro MATSUMOTO).
		416	- slightly update Coro::MakeMaker.
		417
		418	5.15 Tue Jun 30 10:28:06 CEST 2009
		419	- deprecate Coro::Socket, document how to get ipv6 support via
		420	AnyEvent::Socket instead.
		421	- implement signal->wait ($cb) interface, similar to semaphores.
		422	- work around SvOK not supporting getmagic, so we have to getmagic
		423	to test for undef :/ (reported by Matthias Waldorf).
		424	- load Coro::AnyEvent in all modules using AnyEvent.
		425	- work around perl corrupting our internal data structures,
		426	reported by Tokuhiro Matsuno.
		427	- enable per-coroutine real and cpu time gathering
		428	(Coro::State::enable_times).
		429
		430	5.14 Wed Jun 24 01:37:48 CEST 2009
		431	- provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
		432	as this seems to have been a difficult concept (poll, sleep, idle,
		433	idle_upto).
		434	- add Coro::AnyEvent::readable/writable functions.
		435	- clarify Coro::EV/Event/AnyEvent manpages.
		436	- free per-thread global scalars in the thread calling ->cancel, to
		437	avoid crashes when $_, $@ etc., are magical but some of those
		438	had already been freed.
		439	- "unexperimentalise" the callback interface for Coro::Semaphore.
		440	- speed up ready queue management/context switching by using a linked
		441	list instead of an array (~5-10%).
		442	- implement "watch" command in Coro::Debug shells.
		443	- for fun, implement time-slicing as an example in the manpage.
		444	- if AnyEvent detects EV or Event, but we don't have Coro::EV or
		445	Coro::Event, use the normal AnyEvent handling instead of dieing
		446	(the same is true for Coro::Handle).
		447	- properly document Coro::EV::timed_io_once.
		448	- avoid unneccessary ->cancel calls in Coro::Handle.
		449	- maybe make it work on mingw32 with win32 backend
		450	(based on patch by Yasuhiro Matsumoto).
		451
		452	5.132 Fri May 29 09:00:39 CEST 2009
		453	- do not keep a reference to the argument itself in
		454	Coro::Semaphore::guard, as it could change later.
		455	- support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
		456	should support a prepare callback.
		457
		458	5.131 Mon Mar 16 23:20:37 CET 2009
		459	- implement and document Coro->suspend, Coro->resume.
		460	- fix Coro::Select implementation to not (often) close
		461	the passed file descriptors (testcase provided by pippijn).
		462
		463	5.13 Mon Dec 15 21:51:42 CET 2008
		464	- EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
		465	- don't set diehook to C<undef> but instead to NULL, to avoid
		466	spurious warnings.
		467	- fix a lot of bugs in Coro::SemaphoreSet.
		468	- Coro::SemaphoreSet will less often create a semaphore needlessly.
		469	- add Coro::SemaphoreSet::count and wait methods.
		470	- take advantage of the new Guard module.
		471	- deprecate Coro::guard.
		472	- try to fix the dreaded 01_unblock tests once more. I hate it when
		473	testsuites need more fixing than the code they are supposed to test.
		474	- croak in more cases when a required callback isn't resolvable.
		475	- fix some minor issues in Coro::State->call/eval.
		476	- use current coroutine context instead of a temporary one
		477	when temporarily switching to another coroutine.
		478	- do not call C-level on_destroy handlers during global destruction,
		479	to avoid needless segfaults.
		480
		481	5.12 Sun Dec 7 13:30:38 CET 2008
		482	- add default config for MirOS, which seems to be a bug-to-bug
		483	compatible fork of openbsd ("world domination by releasing
		484	openbsd cvs before the openbsd folks do it" or so :).
		485	- free_padlist did destroy the names pad, not good, but didn't
		486	seem to bother perl - this could fix issues such as eval ""
		487	inside a function called from multiple coroutines.
		488	- use a different method to detect destruction time.
		489	- be more careful when freeing padlists just before global
		490	destruction.
		491	- fixed and expanded the call/cc example.
		492	- renamed _terminate to _coro_run.
		493	- new method Coro::Channel->shutdown.
		494	- try pthreads on openbsd <4.4 (broken sigaltstack, will
		495	pthreads fare better?).
		496	- be less picky about destroying "a" running coroutine.
		497
		498	5.11 Tue Nov 25 21:49:05 CET 2008
		499	- DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
		500	working code with failed assertions, introducing more bugs than
		501	it fixes, requiring elaborate workarounds :(
		502
		503	5.1 Mon Nov 24 08:54:59 CET 2008
		504	- wrote a small introductory tutorial - Coro::Intro.
		505	- convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
		506	- Coro::Select did errornously dup the file descriptors
		507	and didn't work with all AnyEvent backends.
		508	- Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
		509	LWP data transfers.
		510	- disassociate c contexts from coro objects - this is agruably more
		511	correct, but mostly allows sharing of cctxs between coro and state
		512	objects, for added memory savings and speed increases.
		513	- bumped $Coro::POOL_RSS up to 32kb by default.
		514	- no longer set the optype to OP_CUSTOM, as B::* understandably
		515	doesn't like this very much (and we are a type of entersub).
		516	- implement state cloning, just to prove that call/cc can be done.
		517	- automatically load Coro::AnyEvent in Coro::Handle.
		518	- wrap ->cancel calls in eval inside Coro::Handle as EV watchers
		519	do not have this method (and don't need it either).
		520	- speed up generic anyevent methods in Coro::Handle by using rouse
		521	callbacks.
		522	- allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
		523	others. It also makes the debugger happier, as you can trace
		524	through the idle threads now.
		525	- add comppad_name* and hints ($^H, %^H) to per-thread variables.
		526	- eg/event was pretty broken.
		527	- better 5.8.6 compatibility.
		528
		529	5.0 Thu Nov 20 10:35:05 CET 2008
		530	- NEW ARCHITECTURE: use the latest 4.x version if you experience
		531	stability issues.
		532	- bump API version to 7 - all dependents must be recompiled.
		533	- removed timed_* functions - they were not being used anyways
		534	and should be replaced by a more generic mechanism -
		535	and were annoying to support anyways :)
		536	- removed SemaphoreSet's waiter method - use sem method instead.
		537	- Coro::Semaphore->adjust didn't correctly wake up enough waiters.
		538	- async_pool did free a scalar value twice
		539	("Attempt to unreference...").
		540	- fix a longstanding bug where calling terminate on a coro that
		541	was waiting for a semaphore that was just becoming available
		542	would cause a deadlock (semaphore would get into a state where
		543	it was available but waiters were still blocked).
		544	- calling throw on a coroutine that is waiting for a semaphore will
		545	no longer make it acquire the semaphore (and thus leak a count).
		546	- perl's process emulation is now not even theoretically supported
		547	anymore.
		548	- new functions Coro::rouse_cb and Coro::rouse_wait for easier
		549	conversion of callback-style to blocking-style.
		550	- new methods $coro->schedule_to and ->cede_to, to specifically
		551	schedule or cede to a specific coroutine.
		552	- new function Coro::Semaphore::wait.
		553	- use named constants in Coro::Channel (Richard Hundt).
		554	- directly patch the entersub opcode calling SLF functions (cede,
		555	transfer and so on). this does speed up context switching, but
		556	more importanly, it frees us from the hardcoded behaviour of
		557	entersub, so we might actually be able to return something from
		558	those functions and atcually create new ones.
		559	- take advantage of __builtin_frame_address on gcc.
		560	- expose THX in coroapi (not sure whether this was a wise decision,
		561	as "threaded" perls are running at half speed anyways).
		562	- implement execute_slf (schedule-like-function) interface that makes
		563	it possible to implement schedule-like-functions in XS.
		564	- use new SLF interface to massively speed up Coro::EV by roughly a
		565	factor of two.
		566	- used new SLF interface to massively speed up Coro::Semaphore by a
		567	factor of three.
		568	- used new SLF interface to speed up Coro::AIO by roughly a factor of
		569	four and reduce its memory usage considerably.
		570	- implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
		571	for a nice speedup and vastly more correct behaviour. Also implement
		572	a new method "sem" to get at the underlying semaphore object.
		573	- implement Coro::Channel in terms of Coro::Semaphore, for a moderate
		574	(in comparison) 20-40% speedup.
		575	- used new SLF interface to reimplement Coro::Signal gaining
		576	some unknown (because I was too lazy), but certain, speedup, and also
		577	making signals reliable for the first time.
		578	- used new SLF interface and other optimisations to speed up async_pool
		579	by a factor of two. It also doesn't rely on perl's exception mechanism
		580	to exit anymore. The overhead for terminating an async_pool, coro over
		581	a normal async is now very small.
		582	- sped up coroutine creation/destruction by 40%.
		583	- forgot to include Coro/libcoro/README in the dist for all these years.
		584	- work around a freebsd pthreads bug (manual testcancel is required as
		585	pthread_cond_wait isn't a cancellation point on freebsd).
		586	- use new rouse functions to speed up and simplify Coro::BDB.
		587	- make "prefer perl native functions" work with threaded perls.
		588	- condense Coro::Debug ps output, hint at v and w flags.
		589	- (libcoro) lots of minor cleanups and portability improvements.
		590
		591	4.914 Wed Nov 19 12:54:18 CET 2008
		592	- fix a disastrous bug in the readline optimisation
		593	introduced in 4.801.
		594
		595	4.913 Sat Nov 15 07:58:28 CET 2008
		596	- async_pool did free a scalar value twice
		597	("Attempt to unreference...").
		598
		599	4.912 Thu Nov 13 18:31:23 CET 2008
		600	- minor cleanups.
		601	- use much larger stacks on linux and perl < 5.8.8.
		602	- Coro::Debug::new_unix_server did not unlink the socket
		603	when destroyed.
		604
		605	4.911 Tue Nov 11 04:26:17 CET 2008
		606	- "port" to threaded perls.
		607
		608	4.91 Mon Nov 10 05:36:38 CET 2008
		609	- the ->throw exception object no longer leaks.
		610	- creating a new cctx leaked a scopestack entry (memleak).
		611	- new coroutines didn't get created with a zero flags field
		612	(unknown impact).
		613	- calling ->throw on a not-yet-started coroutine should now work
		614	instead of being ignored.
		615	- ->throw is now supported on Coro::State objects.
		616	- clean up cctx creation code a bit.
		617	- entersub is actually a UNOP, not a LOGOP (not a bugfix).
		618
		619	4.9 Sat Nov 8 17:45:27 CET 2008
		620	- (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
		621	- (libcoro) no longer leak threads in the experimental pthread backend,
		622	also speed it up considerably.
		623	- (libcoro) do not rely on makecontext passing void *'s unscathed.
		624	- fix compiletime dependencies on libcoro in the Makefile.
		625	- cctx_count wasn't always updated properly.
		626	- Coro::State::cctx_stacksize wasn't applied correctly.
		627	- new function Coro::State::cctx_max_idle.
		628	- the default max number of idle C contexts is now 4.
		629	- (libcoro) try harder to get _setjmp/_longjmp.
		630	- (libcoro) cleanup and extend the libcoro API to officially
		631	allow the creation of empty source contexts.
		632	- very experimental workaround for the totally broken netbsd platform.
		633	- tried to hack around openbsd bugs.
		634
		635	4.804 Wed Nov 5 16:36:00 CET 2008
		636	- Coro::Debug::new_unix_server would not create a non-blocking listening
		637	socket, sometimes causing freezes.
		638	- (libcoro) fix misaligned stack points for setjmp and assembly
		639	methods, which can cause crashes on x86/x86_64 with a sufficiently
		640	aggressive compiler.
		641	- new function: Coro::Debug::new_tcp_server.
		642	- move ->throw into the Coro class because it only works on coro objects.
		643
		644	4.803 Mon Nov 3 17:16:12 CET 2008
		645	- (libcoro) use a global asm statement to become independent of gcc
		646	otpimisations for CORO_ASM (thanks to pippijn for the idea).
		647	- try to workaround yet another broken bsd, this time dragonfly.
		648
		649	4.802 Thu Oct 30 10:56:12 CET 2008
		650	- support -fno-omit-frame-pointer on x86 with the assembly method.
		651	- tune 01_unblock.t tests a bit.
		652
		653	4.801 Wed Oct 22 18:33:37 CEST 2008
		654	- improve readline speed for very long "lines".
		655	- backport to 5.8.8.
		656
		657	4.8 Thu Oct 2 13:34:40 CEST 2008
		658	- new function Coro::AIO::aio_wait.
		659	- Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
		660	- greatly speed up and reduce memory usage of Coro::AIO requests.
		661	- implement some other µ-optimisations.
		662
		663	4.749 Mon Sep 29 14:40:12 CEST 2008
		664	- port to slow and broken pseudo-threaded perls. (courtesy pippijn).
		665
		666	4.748 Sat Sep 27 14:03:19 CEST 2008
		667	- implement, but do not document, PerlIO::cede(granularity).
		668	- Coro::Storable forgot to wrap Storable::pstore.
		669	- work around the multitude of leaks and memory corruption
		670	bugs in PerlIO::via by using our own C-level perliol. As a side
		671	effect, Coro::Storable is now much, much, much faster.
		672
		673	4.747 Tue Sep 23 01:59:41 CEST 2008
		674	- fix a per-cv memleak (one empty array was leaked per
		675	code reference).
		676	- avoid a crash in coro->call\|rss when the coroutine was already
		677	destroyed (most noticably when using Coro::Debug::ps :)
		678	- also protect *Storable::FILE.
		679	- push up default storable granularity to 20ms.
		680
		681	4.746 Sun Sep 21 03:22:20 CEST 2008
		682	- be more insistent on locking Storable against reentrancy
		683	in Coro::Storable.
		684	- move swap_def?v and throw to Coro::State, as documented.
		685
		686	4.745 Thu Jul 24 00:14:38 CEST 2008
		687	- remove debugging code related to MgPV_nolen_const, also try to
		688	make it compile with perl 5.8.6 (yes, apple apparently loves
		689	outdated software). Reported by John S.
		690
		691	4.744 Tue Jul 8 22:06:35 CEST 2008
		692	- correctly provide default DIE/WARN handlers as documented.
		693	- also overwrite PL_vtbl_sigelem.svt_clear, even though current
		694	implementations inside perl work fine for us.
		695
		696	4.743 Mon Jun 16 00:21:57 CEST 2008
		697	- when using Coro::EV without running EV::loop it could
		698	result in busy-waiting for events, this has been fixed.
		699	- reduce codesize and improve performance by using EV_DEFAULT_UC.
		700
		701	4.742 Sat May 31 14:10:21 CEST 2008
		702	- implement a workaround for (some) perl <5.8.8 versions.
		703	- require EV 3.3+.
		704
		705	4.741 Fri May 30 23:33:09 CEST 2008
		706	- tell netbsd how utterly broken their imitation of an OS is
		707	and refuse to build by default if pthreads are in use.
		708	- switch to "s" method on all bsd's by default, as their ucontext
		709	stuff seems just too broken.
		710	- fix a bug in Coro::Select.
		711
		712	4.74 Thu May 29 20:05:31 CEST 2008
		713	- do not test Coro::LWP for lack of dependencies.
		714	- do not test Coro::Select for lack of working perls.
		715
		716	4.73 Thu May 29 2008
		717	- fix a bug in Coro::EV which would cause it to block despite
		718	there being runnable coroutines.
		719	- sprinkle "no warnings" freely over everything, also suppress
		720	warnings for some other modules.
		721	- fix typo in WSAEWOULDBLOCK.
		722
		723	4.72 Sun May 25 05:14:36 CEST 2008
		724	- tweak META.yaml a bit, unfortunately, there is no documented way
		725	to have optional dependencies with CPAN. doh :(
		726	- avoid running some tests on windows because they would fail due to
		727	perl bug (broken fork, broken pipes...).
		728	- work around perl on windows bugs where perl returns undocumented
		729	error codes for sysread, syswrite etc. by taking advantage
		730	of AnyEvent's workaround for that problem.
		731	- use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
		732	a common perl implementation bug on windows.
		733	- use unix domain sockets in testsuite to work around
		734	common perl implementation bugs on widows (they are emulated by
		735	tcp sockets on windows. ugh.)
		736
		737	4.71 Sat May 24 20:01:27 CEST 2008
		738	- fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
		739	- take advantage of async name resolution of AnyEvent::Util.
		740	- work around brutal inet_aton override in Coro::LWP.
		741	- take advantage of the readyhook in Coro::EV, for smoother
		742	scheduling.
		743
		744	4.7 Sun May 11 00:32:19 CEST 2008
		745	- completely reworked the Coro manpage.
		746	- added Coro::AnyEvent, generic event loop integration.
		747	- implement cancel, ready and kill commands in Coro::Debug.
		748	- document find_coro in Coro::Debug.
		749	- incompatible change: rename has_stack to has_cctx.
		750	- Coro::AIO and Coro::BDB no longer force event model detection,
		751	use AnyEvent::AIO and AnyEvent::BDB.
		752
		753	4.6 Sat Apr 26 10:05:14 CEST 2008
		754	- INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
		755	by the Coro module. It was a mistake to have it in the first place.
		756	- (experimental) support for activestate perl 5.10 (method "w").
		757	- (experimental) support for strawberry perl (method "a").
		758	- coro_sigelem_set did not return a value although it had to,
		759	actual impact unknown.
		760
		761	4.51 Mon Apr 14 13:28:27 CEST 2008
		762	- make it compile again on 5.8.
		763
		764	4.50 Thu Apr 10 09:43:17 CEST 2008
		765	- I did it twice! (see 4.49).
		766
		767	4.49 Sun Apr 6 21:23:31 CEST 2008
		768	- grr, instead of compiling the recent changes on 5.10 only they
		769	were compiled on 5.8 only.
		770
		771	4.48 Sun Apr 6 20:36:46 CEST 2008
		772	- allow coroutine switches during eval's under 5.10.x, as it seems
		773	the parser is a per-interpreter option now, so this is safe
		774	(this might fix the odd crashing bug).
		775	- drop support for 5.9.x versions: they are dead, jim.
		776
		777	4.47 Sun Apr 6 00:37:52 CEST 2008
		778	- force cctx allocation on API calls: we know we need to force one
		779	and gcc actually manages to confuse our heuristic nowadays,
		780	leading to crashes and worse.
		781	- document force_cctx.
		782
		783	4.46 Fri Apr 4 22:05:43 CEST 2008
		784	- upgrade libcoro, resulting in pthread-backend (which was only created
		785	to fulfill the rules of the programming languages shootout).
		786
		787	4.45 Thu Mar 13 11:55:36 CET 2008
		788	- fix a file leaking bug in eg/mhyttpd that would allow
		789	downloading of any file (reported by oesi).
		790	- fix deadlock bug in Coro::Channel (reported by Richard Hundt)
		791	(also add testcase).
		792	- support Broadcast option in Coro::Socket (patch by Richard Hundt,
		793	apparently having loads of fun with that).
		794	- implement $state->swap_defsv, ->swap_defav and document ->throw.
		795
		796	4.4 Wed Feb 13 16:44:29 CET 2008
		797	- only assume .cfi pseudo isns exist on GNU/Linux.
		798	- add get_timed method to Coro::Channels.
		799	- fixed Coro::Debug manpage.
		800	- perl 5.11 compatbility improvement based on patch by
		801	Andreas König.
		802
		803	4.37 Sun Jan 20 11:25:23 CET 2008
		804	- soften the check for an active parser for perl 5.10 (avoiding
		805	"Coro::State::transfer called while parsing" in many cases).
		806
		807	4.36 Sun Jan 13 10:53:56 CET 2008
		808	- reset diehook when terminating from an async_pool as to not
		809	trigger any __DIE__ handlers.
		810
		811	4.35 Sun Jan 13 04:14:13 CET 2008
		812	- "bt" debug command now displays any exceptions
		813	from longmess and also skips the innermost
		814	stackframes, giving more useufl output.
		815	- allow backtraces in coroutines blocked in Coro::EV,
		816	at a <1% speed hit.
		817	- handle localising of $SIG{__WARN__} and __DIE__
		818	properly (with a proper amount of dirty hacking).
		819
		820	4.34 Sat Dec 22 17:49:53 CET 2007
		821	- upgrade to EV version 2.0 API.
		822
		823	4.33 Mon Dec 17 08:36:12 CET 2007
		824	- make Coro::AIO etc. loadable in the absence of EV.
		825
		826	4.32 Mon Dec 17 07:46:02 CET 2007
		827	- majorly improved Coro::Handle's performance with Coro::EV.
		828	- implemented the until now mythical Coro::BDB module.
		829	- specialcase EV in Coro::AIO and Coro::BDB for extra speed.
		830
		831	4.31 Wed Dec 5 12:32:39 CET 2007
		832	- remove warn statement form Coro::Util.
		833
		834	4.3 Tue Dec 4 20:33:14 CET 2007
		835	- calls to the idle function could cause stack corruption
		836	when the stack changed.
		837	- do no longer rely on the presence of EV::DNS if EV is used
		838	(because it is gone), but instead take avdantage of EV::ADNS
		839	if available.
		840	- add ($) prototypes to all functions in Coro::Storable.
		841	- use a conventional (safer) idle callback in Coro::EV.
		842	- do accept quickly in Coro::Debug to avoid endless loops.
		843
		844	4.22 Fri Nov 30 16:04:04 CET 2007
		845	- really use optimised versions for Event and EV in Coro::Util
		846	and Coro::Handle.
		847
		848	4.21 Sun Nov 25 10:48:59 CET 2007
		849	- fix a spurious memory read.
		850	- Coro::EV no longer keeps the eventloop "alive".
		851
		852	4.2 Fri Nov 9 20:47:05 CET 2007
		853	- enable/disable tracing from a new coroutine, not a pooled one.
		854	- fix a memleak in Coro::Event.
		855	- removed killall call from fork_eval.
		856	- made sure store_fd is already loaded so that fork_eval
		857	does not have to parse autoload in each subprocess.
		858	- only use assembly method if -O switch is in $Config{optimize}.
		859	- add (optional) Coro::EV module, so far the best event loop module
		860	directly supported by Coro.
		861	- if the event model is EV, use EV::DNS to resolve
		862	stuff in Coro::Util.
		863	- don't get confused by multiple event notifications in Coro::Handle.
		864	- initial support for EV (libevent interface).
		865	- require Event and EV using configure_requires, to force their existance.
		866
		867	4.13 Wed Oct 24 07:26:45 CEST 2007
		868	- add Coro::Storable::blocking_thaw.
		869	- use a vastly more complicated technique to localise
		870	$SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
		871	- use a coroutine for the idle callback Coro::Event,
		872	instead of running Event in the current coroutine context.
		873	This also catches recursive invocations.
		874	- actually report fork errors in gethostbyname and inet_aton.
		875
		876	4.11 Thu Oct 11 02:40:24 CEST 2007
		877	- port to threaded perls.
		878
		879	4.1 Thu Oct 11 02:38:16 CEST 2007
		880	- incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
		881	be local to each coro (see Coro::State).
		882	- incompatible change: for very deep reasons, cede and cede_notself
		883	cannot return anything, so nothing will be returned.
		884	- possibly bring back 5.10 compatibility (untested).
		885	- work around stupid (and wrong) warning on 5.10 :(.
		886	- overlay the saved state over the context stack. This saves
		887	a few hundred bytes per coroutine on average and also
		888	speeds up context switching a bit.
		889	- further tune default stack sizes.
		890	- (more) correctly calculate stack usage in coro_rss.
		891	- Coro::Storable::blocking_* did not properly lock
		892	resulting in races between coroutines.
		893	- added Coro::Storable::guard.
		894	- stopping to trace a coroutine could destroy the cctx of
		895	an unrelated coroutine.
		896	- explain the relationship between Perl and C coroutines in
		897	more detail in Coro::State.
		898	- Coro::Util::inet_aton did not short-circuit dotted quad forms,
		899	causing a fork per resolve. This also affected Coro::Socket.
		900	- switch to a separate stack in $coro->call/eval to avoid
		901	invalidating pointers.
		902
		903	4.03 Sat Oct 6 21:24:00 CEST 2007
		904	- added Coro::throw method.
		905	- minor code cleanups.
		906
		907	4.02 Sat Oct 6 02:36:47 CEST 2007
		908	- fix a very minor per-coroutine memleak (a single codereference).
		909	- fixed a bug where the currently in-use c context would be freed
		910	prematurely (can happen only when programs change the stacksize
		911	or use tracing).
		912	- tracing can no longer keep a coro alive after it terminated.
		913	- do static branch prediction in the common path for gcc. gives
		914	about 2-5% speed improvement here.
		915
		916	4.01 Fri Oct 5 22:10:49 CEST 2007
		917	- instead of recreating a standard output handle we simply
		918	use STDOUT, which is faster and hopefully more robust.
		919
		920	4.0 Fri Oct 5 12:56:00 CEST 2007
		921	- incompatibly changed Coro::Storable::freeze.
		922	- major new feature: added Coro::Debug, for interactive coroutine
		923	debugging, tracing and much more.
		924	- major bug fix: unbelievable, but true: $_, $/ and many other
		925	"saved" variables actually weren't being saved. This has been fixed,
		926	of course, while increasing performance while losing all the save
		927	flags.
		928	- save flags are gone, and all the api functions dealing with them.
		929	- added Coro::Semaphore::adjust.
		930	- added Coro::Util::fork_eval.
		931	- added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
		932	- added Coro::killall.
		933	- reduce initial stack sizes to allow for "micro-coroutines".
		934	- better async_pool resource management, moved parts of async_pool
		935	handling to XS (major speed improvement).
		936	- actually croak before modifying important data structures.
		937	- refuse to transfer while compiling.
		938	- possibly support eval EXPR better now.
		939	- enable assembly per default on linux+bsd x86+amd64.
		940	- all internal members were renamed _something for easier subclassing.
		941	- many minor tweaks.
		942
		943	3.63 Wed May 16 14:10:06 CEST 2007
		944	- implement handcoded assembly for x86/amd64 SVR ABI.
		945
		946	3.62 Fri Apr 27 21:36:06 CEST 2007
		947	- upgrade libcoro (which might set unwind info correctly).
		948	- change default on linux to setjmp/longjmp.
		949
		950	3.61 Thu Apr 19 12:36:18 CEST 2007
		951	- Coro::Storable caused an endless loop when thawing invalid
		952	pst's sometimes.
		953	- use a Semaphore in Coro::Storable, as Storable doesn't
		954	seem to be reentrant (although it is documented to
		955	be threadsafe...).
		956	- fix Coro::Signal to bring back the original unreliable
		957	but stateful semantics.
		958	- fixed a lot of typos in Coro.pm (patch submitted by David
		959	Steinbrunner, which applied flawlessly).
		960
		961	3.6 Sat Apr 14 17:13:31 CEST 2007
		962	- added some bugfixes to get eg/myhttpd working again.
		963	- added Coro::Storable for often-cede'ing freeze/thaw.
		964	- try to do a clean exit when a coroutine calls exit
		965	(EXPERIMENTAL).
		966	- got rid of indirect call through _coro_init.
		967	- updated the partly antique examples in eg/ to
		968	work again and be a bit less magic, too.
		969	- fixed Coro::Signal semantics to work as documented again.
		970
		971	3.55 Sun Mar 25 01:20:47 CET 2007
		972	- add SAVE_DEFFH to save the default filehandle and enable
		973	it by default.
		974	- finally move socket-operations from Coro::Socket to Coro::Handle
		975	to be able to unblock foreign sockets.
		976	- add Coro::State::save_also and guarded_save.
		977	- add count accessor to Coro::Semaphore.
		978	- add Coro::State::cctx_stacksize.
		979	- just for the fun of it, do not rely on implicit context,
		980	which can dramatically improve performance, but people
		981	using windows-process-emulation perls do not care much about
		982	performance.
		983
		984	3.51 Sun Mar 4 14:18:04 CET 2007
		985	- fixed a problem when you weakened references to Coro::State's
		986	(patch by Yuval Kogman).
		987
		988	3.501 Wed Feb 28 12:44:07 CET 2007
		989	- rename some global symbols as macosx from hell redefines
		990	them without asking.
		991
		992	3.5 Tue Feb 13 20:22:53 CET 2007
		993	- do AnyEvent model detection earlier, avoiding problems
		994	caused by first using AnyEvent and later Coro::Event.
		995	- implement and document Coro::Event event objects.
		996	- fix a potential problem in Coro::Event causing crashes.
		997	- initialise PL_comppad when creating a new coroutine,
		998	avoids crashes on early coro destruction.
		999
		1000	3.41 Mon Jan 22 19:19:49 CET 2007
		1001	- readline on Coro::Handle did not support undefined $/,
		1002	nor did it deliver partial lines on EOF or error.
		1003	- implement malloc fallback for stack allocation because
		1004	stupid broken idiotic OSX has a stupid broken
		1005	idiotic fits-the-whole-os mmap "implementation" and
		1006	my dick feels longer if Coro is portable even to
		1007	obsolete platforms.
		1008
		1009	3.4 Fri Jan 19 21:52:54 CET 2007
		1010	- remove t/09_timer.t, as it isn't really testing much
		1011	but was rather flaky in practise.
		1012	- async_pool coro would keep arguments and callback alive until
		1013	it was reused.
		1014	- cancellation of a coroutine could cause spurious idle calls
		1015	in cede_notself.
		1016
		1017	3.3 Sat Jan 6 03:45:00 CET 2007
		1018	- implement $coro->on_destroy.
		1019	- Coro::Event blocking semantics have been changed,
		1020	documented and - hopefully - improved.
		1021	- fix nice adding, not subtracting, from priority.
		1022	- fix ->prio and api_is_ready (patch by Mark Hinds).
		1023	- fixed an assert ("... == prev__cctx->idle_te")
		1024	that could errronously trigger.
		1025	- fix various large and small memleaks.
		1026	- use a (hopefully) more stable cancel implementation
		1027	that immediately frees the coroutine data.
		1028	- cede/cede_notself return a status now.
		1029	- added Coro::guard function.
		1030	- added a global coroutine pool for jobs (on my machine,
		1031	I can create and execute 48k simple coros/s with async,
		1032	and 128k coros with async_pool).
		1033	- Coro::AIO now uses the coroutine priority as io priority.
		1034
		1035	3.2 Fri Dec 22 05:07:09 CET 2006
		1036	- improve portability to slightly older perls.
		1037	- use cleaner coroutine destruction.
		1038	- simplify configuration for users.
		1039	- optionally (unrecommended) prefer perl functions over
		1040	their coro replacements.
		1041
		1042	3.11 Tue Dec 5 13:11:24 CET 2006
		1043	- fixed some bogus assert's, but as perl.h disables assert even
		1044	without NDEBUG (thank you very much), not too many people should
		1045	notice (that did include myself). Andreas König noticed, though :)
		1046	- do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
		1047	it. Also noticed by Andreas König :)
		1048	- save/restore tainted status.
		1049	- verified to pass the testsuite on my 5.9.5.
		1050
		1051	3.1 Mon Dec 4 23:03:40 CET 2006
		1052	- INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
		1053	- incompatible change: transfer flags are now per-state.
		1054	- give a better error message on deadlock.
		1055	- document Coro::nready.
		1056	- enhanced testsuite.
		1057
		1058	3.01 Sun Dec 3 23:47:42 CET 2006
		1059	- forgot to include Coro::Timer.
		1060
		1061	3.0 Sun Dec 3 22:57:25 CET 2006
		1062	- the "FINALLY COMPLETELY STABLE" release (coming soon:
		1063	the "FAMOUS LAST WORDS" release).
		1064	- implement a new stack sharing algorithm, which uses a stack
		1065	pool (size currently hardcoded).
		1066	- make stack sharing mandatory (it no longer uses a heuristic).
		1067	- eval/die no longer cause weird problems under heavy use.
		1068	- Coro::Event could cause livelocks if it was used but
		1069	no Coro::Event watchers were used.
		1070	- Coro::Event now uses asynccheck as prepare does not
		1071	check for changed watchers.
		1072	- Coro::Event allows multiple waiting coros and will wake up one
		1073	per event.
		1074	- Coro::Event should be cleaner and more efficient now.
		1075	- new utility function Coro::unblock_sub.
		1076	- document the sad fact that Event is no longer reentrant.
		1077	- putting a coroutine into the ready queue twice could under
		1078	some circumstances lead to stack corruption.
		1079	- minor incompatibility: subclassing Coro::State is supported
		1080	directly now without going through a _coro_state member.
		1081	- state/coro switching is much faster now.
		1082	- very minor optimisations and code/documentation cleanup.
		1083	- avoid problems due to compiler inlining.
		1084	- removed timers from Coro::Timer -> use AnyEvent instead.
		1085	- replaced Coro::idle coroutine by (cleaner) idle handler.
		1086	- updated to newest libcoro.
		1087	- implement enhanced support for valgrind.
		1088	- implement is_ready and return value for ready.
		1089	- removed Coro::Cont, it was a misnomer (it's generators),
		1090	and it was somewhat annoying to get it right. Will come back
		1091	if somebody asks for it :)
		1092	- many ->wait methods and Coro::Event could return
		1093	spuriously without the event having happened.
		1094
		1095	2.5 Tue Nov 7 12:22:33 CET 2006
		1096	- made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
		1097	use AnyEvent, moved them to Coro/.
		1098	- added Coro::LWP which contains all the uglyness required to
		1099	make LWP non-blocking.
		1100	- should work with perl 5.9.x now (Andreas König made me do it).
		1101	- fixed another bug in Coro::Select when the timeout was undef.
		1102	- reuse PL_start_env for all coros, saves some memory per coroutine.
		1103	- manage PL_top_env differently, hopefully to avoid panic: top_env.
		1104	- timeout argument was not properly used in Coro::Socket.
		1105	- allow limited forms of subclassing in Coro::Handle/Coro::Socket.
		1106	- emulate undocumented(!) functionality of IO::Socket required
		1107	by LWP(!!).
		1108	- updated eg/lwp to work with newer lwp's.
		1109	- remove "FATAL: uncaught exception" prefix. Coroutines that die
		1110	kill the whole process, just as exceptions in the main "coroutine"
		1111	did already.
		1112
		1113	2.1 Wed Nov 1 23:01:13 CET 2006
		1114	- fix a long-standing bug in Coro::Select where select with
		1115	zero timeout would instead change the current default filehandle.
		1116	- use a simpler and hopefully more robust way to clone padlists
		1117	(uses less memory and a perl function instead of our own).
		1118	- coro can now create a stack guard area on many architectures.
		1119	- Coro::AIO properly reexports additional functions from IO::AIO.
		1120	- updated libcoro with a workaround for OS X,
		1121	pach and testing by Michael Schwern.
		1122
		1123	2.0 Tue Oct 24 05:47:17 CEST 2006
		1124	- support additional aio requests in Coro::AIO.
		1125
		1126	1.9 (never properly released due to a glitch)
		1127
		1128	1.8 Thu Feb 2 00:59:06 CET 2006
		1129	- applied suggested patch by SAMV to avoid problems during stupid
		1130	mark & sweep gc run.
		1131	- applied patch by Scott Walters for 5.9.3 compatibility.
		1132
		1133	1.7 Tue Dec 27 01:41:58 CET 2005
		1134	- added Coro::AIO, a thin wrapper around IO::AIO.
		1135	- improved Makefile.PL explanations.
		1136
		1137	1.6 Mon Dec 12 21:30:05 CET 2005
		1138	- additionally save PM_curpm might fix as-of-yet
		1139	unseen problems with regex matches being attributed to the
		1140	wrong package.
		1141	- add t/10_bugs.t, which currently checks against imho broken
		1142	perls that use 0.26MB of stack space per Perl_magic_get
		1143	invocation (newer linuxes) as opposed to the 0.0002MB perl
		1144	normally uses.
		1145	- make stacksize configurable for the ultimate debian experience.
		1146
		1147	1.51 Mon Dec 12 18:48:36 CET 2005
		1148	- remove debugging warn() accidentally left in Coro::Select.
		1149
		1150	1.5 Tue Nov 29 13:32:44 CET 2005
		1151	- use Coro::Event inside Coro::Select to avoid spurious deadlocks.
		1152	- fix Coro::Select 'select'.
		1153	- strict'ify some modules.
3	- libcoro errornously restored the SIGUSR2 handler to SIGUSR1.	1154	- libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
		1155	- use XSLoader in selected modules.
		1156	- remove some 5.6 compatibility cruft.
4		1157
5	1.4 Tue Sep 6 00:11:05 CEST 2005	1158	1.4 Tue Sep 6 00:11:05 CEST 2005
6	- libcoro did not take into account the trampoline on amd64,	1159	- libcoro did not take into account the trampoline on amd64,
7	when 'l'inux method was used.	1160	when 'l'inux method was used.
8		1161

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Comparing Coro/Changes (file contents): Revision 1.112 by root, Wed Oct 19 19:04:46 2005 UTC vs. Revision 1.673 by root, Sun Sep 3 23:36:01 2017 UTC

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Comparing Coro/Changes (file contents):
Revision 1.112 by root, Wed Oct 19 19:04:46 2005 UTC vs.
Revision 1.673 by root, Sun Sep 3 23:36:01 2017 UTC