[ViewVC] Annotation of: cvs/Coro/Changes

Revision history for Perl extension Coro.

TODO: better (earlier) error messages on broken transfer's
TODO: destroy gets only called on cancel: fix(?)
TODO: fast reloads in cf cause segfaults (coro_state_free->destroy->crash)

3.41
        - readline on Coro::Handle did not support undefined $/,
          nor did it deliver partial lines on EOF or error.

3.4  Fri Jan 19 21:52:54 CET 2007
        - remove t/09_timer.t, as it isn't really testing much
          but was rather flaky in practise.
        - async_pool coro would keep arguments and callback alive until
          it was reused.
        - cancellation of a coroutine could cause spurious idle calls
          in cede_notself.

3.3  Sat Jan  6 03:45:00 CET 2007
        - implement $coro->on_destroy.
        - Coro::Event blocking semantics have been changed,
          documented and - hopefully - improved.
        - fix nice adding, not subtracting, from priority.
        - fix ->prio and api_is_ready (patch by Mark Hinds).
        - fixed an assert ("... == prev__cctx->idle_te")
          that could errronously trigger.
        - fix various large and small memleaks.
        - use a (hopefully) more stable cancel implementation
          that immediately frees the coroutine data.
        - cede/cede_notself return a status now.
        - added Coro::guard function.
        - added a global coroutine pool for jobs (on my machine,
          I can create and execute 48k simple coros/s with async,
          and 128k coros with async_pool).
        - Coro::AIO now uses the coroutine priority as io priority.

3.2  Fri Dec 22 05:07:09 CET 2006
        - improve portability to slightly older perls.
        - use cleaner coroutine destruction.
        - simplify configuration for users.
        - optionally (unrecommended) prefer perl functions over
          their coro replacements.

3.11 Tue Dec  5 13:11:24 CET 2006
        - fixed some bogus assert's, but as perl.h disables assert even
          without NDEBUG (thank you very much), not too many people should
          notice (that did include myself). Andreas König noticed, though :)
        - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
          it. Also noticed by Andreas König :)
        - save/restore tainted status.
        - verified to pass the testsuite on my 5.9.5.

3.1  Mon Dec  4 23:03:40 CET 2006
        - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
        - incompatible change: transfer flags are now per-state.
        - give a better error message on deadlock.
        - document Coro::nready.
        - enhanced testsuite.

3.01 Sun Dec  3 23:47:42 CET 2006
        - forgot to include Coro::Timer.

3.0  Sun Dec  3 22:57:25 CET 2006
        - the "FINALLY COMPLETELY STABLE" release (coming soon:
          the "FAMOUS LAST WORDS" release).
        - implement a new stack sharing algorithm, which uses a stack
          pool (size currently hardcoded).
        - make stack sharing mandatory (it no longer uses a heuristic).
        - eval/die no longer cause weird problems under heavy use.
        - Coro::Event could cause livelocks if it was used but
          no Coro::Event watchers were used.
        - Coro::Event now uses asynccheck as prepare does not
          check for changed watchers.
        - Coro::Event allows multiple waiting coros and will wake up one
          per event.
        - Coro::Event should be cleaner and more efficient now.
        - new utility function Coro::unblock_sub.
        - document the sad fact that Event is no longer reentrant.
        - putting a coroutine into the ready queue twice could under
          some circumstances lead to stack corruption.
        - minor incompatibility: subclassing Coro::State is supported
          directly now without going through a _coro_state member.
        - state/coro switching is much faster now.
        - very minor optimisations and code/documentation cleanup.
        - avoid problems due to compiler inlining.
        - removed timers from Coro::Timer -> use AnyEvent instead.
        - replaced Coro::idle coroutine by (cleaner) idle handler.
        - updated to newest libcoro.
        - implement enhanced support for valgrind.
        - implement is_ready and return value for ready.
        - removed Coro::Cont, it was a misnomer (it's generators),
          and it was somewhat annoying to get it right. Will come back
          if somebody asks for it :)
        - many ->wait methods and Coro::Event could return
          spuriously without the event having happened.

2.5  Tue Nov  7 12:22:33 CET 2006
        - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
          use AnyEvent, moved them to Coro/.
        - added Coro::LWP which contains all the uglyness required to
          make LWP non-blocking.
        - should work with perl 5.9.x now (Andreas König made me do it).
        - fixed another bug in Coro::Select when the timeout was undef.
        - reuse PL_start_env for all coros, saves some memory per coroutine.
        - manage PL_top_env differently, hopefully to avoid panic: top_env.
        - timeout argument was not properly used in Coro::Socket.
        - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
        - emulate undocumented(!) functionality of IO::Socket required
          by LWP(!!).
        - updated eg/lwp to work with newer lwp's.
        - remove "FATAL: uncaught exception" prefix. Coroutines that die
          kill the whole process, just as exceptions in the main "coroutine"
          did already.

2.1  Wed Nov  1 23:01:13 CET 2006
        - fix a long-standing bug in Coro::Select where select with
          zero timeout would instead change the current default filehandle.
        - use a simpler and hopefully more robust way to clone padlists
          (uses less memory and a perl function instead of our own).
        - coro can now create a stack guard area on many architectures.
        - Coro::AIO properly reexports additional functions from IO::AIO.
        - updated libcoro with a workaround for OS X,
          pach and testing by Michael Schwern.

2.0  Tue Oct 24 05:47:17 CEST 2006
        - support additional aio requests in Coro::AIO.

1.9  (never properly released due to a glitch)

1.8  Thu Feb  2 00:59:06 CET 2006
        - applied suggested patch by SAMV to avoid problems during stupid
          mark & sweep gc run.
        - applied patch by Scott Walters for 5.9.3 compatibility.

1.7  Tue Dec 27 01:41:58 CET 2005
        - added Coro::AIO, a thin wrapper around IO::AIO.
        - improved Makefile.PL explanations.

1.6  Mon Dec 12 21:30:05 CET 2005
        - additionally save PM_curpm might fix as-of-yet
          unseen problems with regex matches being attributed to the
          wrong package.
        - add t/10_bugs.t, which currently checks against imho broken
          perls that use 0.26MB of stack space per Perl_magic_get
          invocation (newer linuxes) as opposed to the 0.0002MB perl
          normally uses.
        - make stacksize configurable for the ultimate debian experience.

1.51 Mon Dec 12 18:48:36 CET 2005
        - remove debugging warn() accidentally left in Coro::Select.

1.5  Tue Nov 29 13:32:44 CET 2005
        - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
        - fix Coro::Select 'select'.
        - strict'ify some modules.
        - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
        - use XSLoader in selected modules.
        - remove some 5.6 compatibility cruft.

1.4  Tue Sep  6 00:11:05 CEST 2005
        - libcoro did not take into account the trampoline on amd64,
          when 'l'inux method was used.

1.31 Tue Aug 30 23:31:33 CEST 2005
        - some portability fixes/workarounds.

1.3  Sat Aug 20 03:08:56 CEST 2005
        - no code changes. module seems to work fine.
        - improve Coro::State docs, remove reference to nonexisting
          Coro::State::flush method.
        - no longer autodetect windows, present it as an option instead.

1.2  Mon May 16 02:00:55 CEST 2005
        - included libcoro.c earlier in State.xs, might improve portability.
        - use a faster and possibly more stable Coro::Cont implementation.
        - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
        - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
        - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.

1.11 Thu Mar  3 18:00:52 CET 2005
        - change of contact address.

1.1 Tue Feb 22 20:51:16 CET 2005
        - support [l]inux method on amd64.
        - allow some context switches while compiling/eval'ing.

1.0  Tue Aug 10 03:47:27 CEST 2004
        - Event 0.89 fixes the bug again.
        - fix the remaining(??) memleak. I didn't free the cache-AV for
          padlists, so one AV per created anon-sub leaked.

0.97 Fri May 14 15:23:32 CEST 2004
        - remove stupid gcc extension that was an experiment only anyway.

0.96 Thu May 13 18:09:29 CEST 2004
        - tell people if they have yet another broken Event variant.
        - made Coro to work _better_ with threads (it seems that, as long
          as you use Coros in one thread only everything will work fine.
          Looking at the perl source the problem might be missing locking
          between Coro and some perl internal routines. That's not easily
          fixable).
        - (hopefully) got rid of the static xnext inside transfer.

0.95 Sun Feb 15 03:20:28 CET 2004
        - removed Coro::State::flush, implemented a new and much
          faster caching mechanism by attaching magic to the CV.
        - a memleak with (real) closures remains.
        - dramatically reduced size of stacks to 65536 (linux/x86), after
          observing that even myhttpd never had more than a kilobyte
          of stack in use (stack is still only physically allocated in
          pagesize increments for systems suporting mmap).
        - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
        - fix for threaded perl.

0.9  Sun Nov 23 04:32:39 CET 2003
        - fix a few very hard to track down but (of course) stupid
          memory leaks.
        - stringify version number to avoid locale problems :(.
        - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
          hopefully ignoring it "just works".

0.8   Wed Nov  5 19:38:40 CET 2003
        - port to perl5.005_03, but only 5.8.x+ is supported!
        - honor LocalAddr even without LocalPort in Coro::Socket.

0.7   Tue May 27 03:12:38 CEST 2003
        - the version jump indicates some level of testing, not gobs
          of new features.
        - uh... I found the prompt function in ExtUtils::MakeMaker.
          Highly correct stuff, that is...
        - fixed(?) a bug with die's in coroutines causing "panic: top_env".
          the fix is not well understood by the author, so beware :(.

0.652 Thu May  8 02:54:46 CEST 2003
        - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
          cause version 4 doesn't have ucontext.
        - Benjamin Reed reported that setjmp works fine on darwin,
          so preselect it.

0.651 Sat Mar 29 15:00:23 CET 2003
        - fix a bug in Coro::Handle where some bytes could get lost
          on reading, reported by jason@nichego.net.

0.65  Sun Mar 23 00:08:26 CET 2003
        - added a README.linux-glibc.
        - new module Coro::Select.
        - also save/restore PL_comppad, fixes segfaults with 5.8.1.
          (I never claimed that I know what I am doing ;).
        - set default to setjmp/longjmp on non-x86-linux.

0.6   Thu Nov 21 11:09:06 CET 2002
        - made lazy context switching the default.
        - fixed the bug where SemaphoreSet::guard
          was the same as timed_guard and timed_guard was missing.
        - fix a memleak in Coro::Timer.
        - reclassified context sharing as not experimental.

0.534 Sun Apr 14 03:05:12 CEST 2002
        - fixed backspace => tab in header parsing (myhttpd).
        - added eg/readline, for elmex.
        - Coro::Event now calls ->start on first call instead of
          ->again, which created wrong timeouts for the first ->next.
        - fixed a bug where Coro::Socket returned a closed socket instead
          of nothing on ECONNREFUSED and similar error conditions.

0.533 Mon Feb 18 18:49:40 CET 2002
        - adapt to finally working Event-0.85.
        - fixed buggy event initialization (trapped under windows, but how
          could it possibly have worked anywhere?)

0.532 Wed Jan 16 02:45:32 CET 2002
        - removed the reference to pp_entersub, might work on
          (some) win32 perls now (testsuite works under cygwin,
          without Event, which freezes).

0.531 Mon Dec 10 22:18:44 CET 2001
        - Fixed a bug in SemaphoreSet::timed_down.

0.53  Tue Nov 27 21:11:13 CET 2001
        - some tests for Event.
        - slightly different internal architecture to get refcnt into the object
          and not the reference. might fix a few bugs, certainly did introduce
          new ones.
        - Coro::Timer (independent of Event).
        - new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.

0.52  Tue Nov  6 21:36:18 CET 2001
        - ported to cygwin (trivial).
          patch by Gerrit P. Haase <gp@familiehaase.de>.
        - small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.

0.51  Thu Nov  1 20:39:01 CET 2001
        - terminate/cancel now work properly (otherwise termination
          could cause a "next coroutine is not and contains not..."
          error.
        - added Coro::Socket::shutdown.
        - Coro::Event::loop no is the same as Event::loop.
        - implemented terminate with args + join.

0.5   Fri Sep 28 16:15:35 CEST 2001
        - fixed "print" on a Coro::Handle. The print method worked.
        - small tweaks (seem to reduce memory consumption a lot)
          in various modules.
        - splendid use of "no warnings" scattered throughout.
        - added Coro::Handle::rbuf, fixed Coro::Handle::fh.

0.49  Sun Sep 16 02:42:45 CEST 2001
        - changed some method calls to function calls for speed
          inside Coro::Handle.
        - make Coro::Handle use an array instead of a hash for
          speed reasons.
        - IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
          sjlj and ucontext should now work.
        - IRIX-specific port for libcoro.
        - swapped order of accept results to match IO::Socket.
        - changed getsock/peername to sock/peername to match IO::Socket.
        - fixed a bug that caused segfault when returning to main task
          under some circumstances.
        - other bugfixes.

0.45  Sun Sep  2 02:54:01 CEST 2001
        - new method Coro::Handle::timeout.
        - corrected speling of set...name to get...name in Coro::Socket.
        - Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.
        - Coro::Handle now supports fileno and FILENO.
        - added eg/myhttpd, a web server.
        - Coro::Socket now accepts numeric ports as well as "port(number)"
          syntax.
        - moved some scheduling primitives into xs code. more to come.
        - new simple priority system.
        - implemented Coro::Event using XS, almost four times faster!
        - small memory corruption problem fixed (boy that was difficult).

0.13  Wed Aug  8 16:53:07 CEST 2001
        - new method Coro::Handle::readline.
        - added eg/lwp and Coro::Handle::autoflush, to make LWP work.
          (see eg/lwp on how to make LWP non-blocking).
        - renamed Coro::Socket::new_inet to new.
        - added Coro::Util, some utility functions.
        - die/eval now works better (still get annoying (but true ;)
          "Callback called exit" messages).
        - Coro::Handle now supports timeout, and Coro::Socket Timeout.
        - much better Coro::Socket support.

0.12  Fri Jul 27 04:19:01 CEST 2001
        - do not use mmap if neither MAP_ANON nor MAP_ANONYMOUS is defined.
        - very experimental stack sharing algorithm. not 100% safe but
          should work well in practise ;)
        - added Coro::RWLock.
        - Coro::Specific now works.

0.11  Tue Jul 24 22:49:21 CEST 2001
        - added specialized hack for newer and older linux versions (fast).
        - renamed Coro::Event::IO to Coro::Handle.
        - new module Coro::Socket.

0.1   Tue Jul 24 01:47:53 CEST 2001
        - release candidate 3. A rather new internal structure :(
        - the great renaming: Damian Conway gave me a suitable replacement
          for yield.
        - added Coro/libcoro, a portable coroutine implementation for C
          (not even perl-dependent!!!), which can be used by Coro::State.
        - renamed SAVE_DEFSV (on xs-level only) to avoid symbol clash in
          perl-5.6.
        - new function Coro::Event::idle.
        - the idle process is now overriden
          by default in Coro::Event.
        - Coro::Channel now enforces the size.
        - canceling events now works in all cases.
        - Coro state now include $_ and $@.
        - yet another bug workaround that I do not really understand :(
        - new module Coro::Event::IO (very undocumented) to do
          non-blocking i/o.
        - performance tuning.

0.08  Thu Jul 19 06:13:25 CEST 2001
        - release candidate 2 (new functionality).
        - add Coro::State::flush function.
        - transfer now supports a flags value (mostly for speed ATM).
        - might compile and work in the presence of threads now.
        - continuations have a saner syntax.
        - no more memleaks.

0.07  Tue Jul 17 17:40:18 CEST 2001
        - release candidate 1 ;)
        - slightly nicer code.
        - fixed a scheduling bug in Coro::Event.

0.06  Tue Jul 17 04:23:24 CEST 2001
        - ok, I found the showstopper - the same sub must not be
          re-entered in two different coroutines, otherwise => crash. I
          see no easy solution to this problem, except by walking the call
          chaing and saving/restoring the cv's, which is what I do now.
        - memory leaks still latent, especially at thread termination.
        - Coro::Event now works (haha).

0.05  Sun Jul 15 17:32:20 CEST 2001
        - fixed a few issues in Coro::Event.
        - I forgot to include Coro::Event in 0.04 :(:(:(

0.04  Sun Jul 15 05:24:59 CEST 2001
        - @_ is now properly localized.
        - Coro::State is now easier subclassable.
        - Coro::Cont now coroutine-aware.
        - Coro::Specific is a low-overhead module to create
          coroutine-specific vars.
        - Coro::Event provides a simple interface to Event.

0.03  Fri Jul 13 14:51:52 CEST 2001
        - transfer() now implemented in XS (beware).
        - new module Coro::Cont for really faked continuations.
        - big internal architecture changes: Coro::State is now
          really low-level and can thus be used to implement other
          interesting things, While "Coro::" implements a process-like
          model. Still crude and subject to change.
        - $_ and $@ are no longer being localized.

0.02  Tue Jul 10 01:38:17 CEST 2001
        - implemented "async" attribute.
        - $_ and $@ are now localized.
        - added Coro::Channel.
        - more testcases, still no docs.

0.01  Tue Jul  3 02:18:41 CEST 2001
        - original version; copied from Convert::Scalar.

Revision:	1.202
Committed:	Sat Jan 20 19:52:15 2007 UTC (17 years, 4 months ago) by root
Branch:	MAIN
Changes since 1.201:	+4 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	Revision history for Perl extension Coro.
2	root	1.113
3	root	1.173	TODO: better (earlier) error messages on broken transfer's
4	root	1.191	TODO: destroy gets only called on cancel: fix(?)
5	root	1.200	TODO: fast reloads in cf cause segfaults (coro_state_free->destroy->crash)
6	root	1.173
7	root	1.202	3.41
8			- readline on Coro::Handle did not support undefined $/,
9			nor did it deliver partial lines on EOF or error.
10
11	root	1.201	3.4 Fri Jan 19 21:52:54 CET 2007
12	root	1.197	- remove t/09_timer.t, as it isn't really testing much
13			but was rather flaky in practise.
14	root	1.198	- async_pool coro would keep arguments and callback alive until
15			it was reused.
16	root	1.199	- cancellation of a coroutine could cause spurious idle calls
17			in cede_notself.
18	root	1.197
19	root	1.196	3.3 Sat Jan 6 03:45:00 CET 2007
20	root	1.187	- implement $coro->on_destroy.
21	root	1.188	- Coro::Event blocking semantics have been changed,
22			documented and - hopefully - improved.
23	root	1.184	- fix nice adding, not subtracting, from priority.
24	root	1.185	- fix ->prio and api_is_ready (patch by Mark Hinds).
25	root	1.190	- fixed an assert ("... == prev__cctx->idle_te")
26			that could errronously trigger.
27	root	1.192	- fix various large and small memleaks.
28	root	1.191	- use a (hopefully) more stable cancel implementation
29			that immediately frees the coroutine data.
30	root	1.194	- cede/cede_notself return a status now.
31	root	1.191	- added Coro::guard function.
32	root	1.193	- added a global coroutine pool for jobs (on my machine,
33			I can create and execute 48k simple coros/s with async,
34			and 128k coros with async_pool).
35	root	1.195	- Coro::AIO now uses the coroutine priority as io priority.
36	root	1.184
37	root	1.183	3.2 Fri Dec 22 05:07:09 CET 2006
38	root	1.179	- improve portability to slightly older perls.
39	root	1.180	- use cleaner coroutine destruction.
40	root	1.182	- simplify configuration for users.
41			- optionally (unrecommended) prefer perl functions over
42			their coro replacements.
43	root	1.179
44	root	1.178	3.11 Tue Dec 5 13:11:24 CET 2006
45			- fixed some bogus assert's, but as perl.h disables assert even
46			without NDEBUG (thank you very much), not too many people should
47			notice (that did include myself). Andreas König noticed, though :)
48			- do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
49			it. Also noticed by Andreas König :)
50			- save/restore tainted status.
51			- verified to pass the testsuite on my 5.9.5.
52
53	root	1.177	3.1 Mon Dec 4 23:03:40 CET 2006
54			- INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
55	root	1.175	- incompatible change: transfer flags are now per-state.
56	root	1.173	- give a better error message on deadlock.
57	root	1.175	- document Coro::nready.
58	root	1.174	- enhanced testsuite.
59	root	1.169
60	root	1.172	3.01 Sun Dec 3 23:47:42 CET 2006
61			- forgot to include Coro::Timer.
62
63	root	1.171	3.0 Sun Dec 3 22:57:25 CET 2006
64	root	1.163	- the "FINALLY COMPLETELY STABLE" release (coming soon:
65			the "FAMOUS LAST WORDS" release).
66	root	1.166	- implement a new stack sharing algorithm, which uses a stack
67			pool (size currently hardcoded).
68	root	1.155	- make stack sharing mandatory (it no longer uses a heuristic).
69	root	1.157	- eval/die no longer cause weird problems under heavy use.
70	root	1.152	- Coro::Event could cause livelocks if it was used but
71	root	1.161	no Coro::Event watchers were used.
72	root	1.167	- Coro::Event now uses asynccheck as prepare does not
73			check for changed watchers.
74	root	1.170	- Coro::Event allows multiple waiting coros and will wake up one
75			per event.
76	root	1.152	- Coro::Event should be cleaner and more efficient now.
77	root	1.165	- new utility function Coro::unblock_sub.
78	root	1.164	- document the sad fact that Event is no longer reentrant.
79	root	1.163	- putting a coroutine into the ready queue twice could under
80			some circumstances lead to stack corruption.
81	root	1.161	- minor incompatibility: subclassing Coro::State is supported
82			directly now without going through a _coro_state member.
83	root	1.156	- state/coro switching is much faster now.
84	root	1.154	- very minor optimisations and code/documentation cleanup.
85	root	1.153	- avoid problems due to compiler inlining.
86	root	1.154	- removed timers from Coro::Timer -> use AnyEvent instead.
87			- replaced Coro::idle coroutine by (cleaner) idle handler.
88	root	1.156	- updated to newest libcoro.
89	root	1.159	- implement enhanced support for valgrind.
90	root	1.162	- implement is_ready and return value for ready.
91	root	1.168	- removed Coro::Cont, it was a misnomer (it's generators),
92			and it was somewhat annoying to get it right. Will come back
93			if somebody asks for it :)
94	root	1.163	- many ->wait methods and Coro::Event could return
95			spuriously without the event having happened.
96	root	1.146
97	root	1.145	2.5 Tue Nov 7 12:22:33 CET 2006
98	root	1.143	- made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
99			use AnyEvent, moved them to Coro/.
100	root	1.140	- added Coro::LWP which contains all the uglyness required to
101			make LWP non-blocking.
102			- should work with perl 5.9.x now (Andreas König made me do it).
103	root	1.141	- fixed another bug in Coro::Select when the timeout was undef.
104	root	1.136	- reuse PL_start_env for all coros, saves some memory per coroutine.
105			- manage PL_top_env differently, hopefully to avoid panic: top_env.
106	root	1.137	- timeout argument was not properly used in Coro::Socket.
107			- allow limited forms of subclassing in Coro::Handle/Coro::Socket.
108	root	1.138	- emulate undocumented(!) functionality of IO::Socket required
109			by LWP(!!).
110			- updated eg/lwp to work with newer lwp's.
111	root	1.140	- remove "FATAL: uncaught exception" prefix. Coroutines that die
112			kill the whole process, just as exceptions in the main "coroutine"
113			did already.
114	root	1.135
115	root	1.134	2.1 Wed Nov 1 23:01:13 CET 2006
116			- fix a long-standing bug in Coro::Select where select with
117			zero timeout would instead change the current default filehandle.
118	root	1.132	- use a simpler and hopefully more robust way to clone padlists
119			(uses less memory and a perl function instead of our own).
120			- coro can now create a stack guard area on many architectures.
121	root	1.134	- Coro::AIO properly reexports additional functions from IO::AIO.
122	root	1.132	- updated libcoro with a workaround for OS X,
123	root	1.134	pach and testing by Michael Schwern.
124	root	1.130
125	root	1.129	2.0 Tue Oct 24 05:47:17 CEST 2006
126	root	1.128	- support additional aio requests in Coro::AIO.
127
128	root	1.129	1.9 (never properly released due to a glitch)
129
130	root	1.127	1.8 Thu Feb 2 00:59:06 CET 2006
131	root	1.125	- applied suggested patch by SAMV to avoid problems during stupid
132			mark & sweep gc run.
133	root	1.126	- applied patch by Scott Walters for 5.9.3 compatibility.
134	root	1.125
135	root	1.124	1.7 Tue Dec 27 01:41:58 CET 2005
136	root	1.123	- added Coro::AIO, a thin wrapper around IO::AIO.
137	root	1.122	- improved Makefile.PL explanations.
138
139	root	1.119	1.6 Mon Dec 12 21:30:05 CET 2005
140	root	1.117	- additionally save PM_curpm might fix as-of-yet
141	root	1.121	unseen problems with regex matches being attributed to the
142	root	1.117	wrong package.
143	root	1.118	- add t/10_bugs.t, which currently checks against imho broken
144			perls that use 0.26MB of stack space per Perl_magic_get
145	root	1.121	invocation (newer linuxes) as opposed to the 0.0002MB perl
146			normally uses.
147	root	1.120	- make stacksize configurable for the ultimate debian experience.
148	root	1.117
149	root	1.116	1.51 Mon Dec 12 18:48:36 CET 2005
150			- remove debugging warn() accidentally left in Coro::Select.
151
152	root	1.115	1.5 Tue Nov 29 13:32:44 CET 2005
153	root	1.114	- use Coro::Event inside Coro::Select to avoid spurious deadlocks.
154	root	1.115	- fix Coro::Select 'select'.
155			- strict'ify some modules.
156	root	1.112	- libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
157	root	1.115	- use XSLoader in selected modules.
158			- remove some 5.6 compatibility cruft.
159	root	1.112
160	root	1.111	1.4 Tue Sep 6 00:11:05 CEST 2005
161			- libcoro did not take into account the trampoline on amd64,
162			when 'l'inux method was used.
163
164	root	1.110	1.31 Tue Aug 30 23:31:33 CEST 2005
165			- some portability fixes/workarounds.
166
167	root	1.107	1.3 Sat Aug 20 03:08:56 CEST 2005
168	root	1.108	- no code changes. module seems to work fine.
169	root	1.106	- improve Coro::State docs, remove reference to nonexisting
170			Coro::State::flush method.
171	root	1.107	- no longer autodetect windows, present it as an option instead.
172	root	1.106
173	root	1.105	1.2 Mon May 16 02:00:55 CEST 2005
174	root	1.100	- included libcoro.c earlier in State.xs, might improve portability.
175	root	1.101	- use a faster and possibly more stable Coro::Cont implementation.
176	root	1.102	- accept x86_64 in addition to amd64 for optimized linux-amd64 support.
177	root	1.104	- fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
178	root	1.105	- fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
179	root	1.100
180	root	1.99	1.11 Thu Mar 3 18:00:52 CET 2005
181			- change of contact address.
182
183	root	1.98	1.1 Tue Feb 22 20:51:16 CET 2005
184	root	1.97	- support [l]inux method on amd64.
185	root	1.109	- allow some context switches while compiling/eval'ing.
186	root	1.97
187	root	1.96	1.0 Tue Aug 10 03:47:27 CEST 2004
188	root	1.95	- Event 0.89 fixes the bug again.
189	root	1.96	- fix the remaining(??) memleak. I didn't free the cache-AV for
190			padlists, so one AV per created anon-sub leaked.
191	root	1.95
192	pcg	1.94	0.97 Fri May 14 15:23:32 CEST 2004
193			- remove stupid gcc extension that was an experiment only anyway.
194
195	pcg	1.93	0.96 Thu May 13 18:09:29 CEST 2004
196	root	1.103	- tell people if they have yet another broken Event variant.
197	pcg	1.91	- made Coro to work _better_ with threads (it seems that, as long
198			as you use Coros in one thread only everything will work fine.
199			Looking at the perl source the problem might be missing locking
200			between Coro and some perl internal routines. That's not easily
201			fixable).
202	pcg	1.92	- (hopefully) got rid of the static xnext inside transfer.
203	pcg	1.91
204	pcg	1.90	0.95 Sun Feb 15 03:20:28 CET 2004
205	pcg	1.86	- removed Coro::State::flush, implemented a new and much
206			faster caching mechanism by attaching magic to the CV.
207	pcg	1.87	- a memleak with (real) closures remains.
208	pcg	1.88	- dramatically reduced size of stacks to 65536 (linux/x86), after
209			observing that even myhttpd never had more than a kilobyte
210			of stack in use (stack is still only physically allocated in
211			pagesize increments for systems suporting mmap).
212	pcg	1.89	- fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
213	pcg	1.90	- fix for threaded perl.
214	pcg	1.86
215	pcg	1.85	0.9 Sun Nov 23 04:32:39 CET 2003
216	pcg	1.84	- fix a few very hard to track down but (of course) stupid
217			memory leaks.
218			- stringify version number to avoid locale problems :(.
219	pcg	1.85	- perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
220			hopefully ignoring it "just works".
221	pcg	1.84
222	pcg	1.83	0.8 Wed Nov 5 19:38:40 CET 2003
223			- port to perl5.005_03, but only 5.8.x+ is supported!
224	pcg	1.82	- honor LocalAddr even without LocalPort in Coro::Socket.
225
226	root	1.81	0.7 Tue May 27 03:12:38 CEST 2003
227			- the version jump indicates some level of testing, not gobs
228			of new features.
229	root	1.80	- uh... I found the prompt function in ExtUtils::MakeMaker.
230			Highly correct stuff, that is...
231	root	1.81	- fixed(?) a bug with die's in coroutines causing "panic: top_env".
232			the fix is not well understood by the author, so beware :(.
233	root	1.80
234	root	1.79	0.652 Thu May 8 02:54:46 CEST 2003
235	root	1.76	- Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
236	root	1.78	cause version 4 doesn't have ucontext.
237	root	1.77	- Benjamin Reed reported that setjmp works fine on darwin,
238			so preselect it.
239	root	1.76
240	root	1.75	0.651 Sat Mar 29 15:00:23 CET 2003
241			- fix a bug in Coro::Handle where some bytes could get lost
242			on reading, reported by jason@nichego.net.
243	root	1.74
244	root	1.73	0.65 Sun Mar 23 00:08:26 CET 2003
245	root	1.72	- added a README.linux-glibc.
246			- new module Coro::Select.
247			- also save/restore PL_comppad, fixes segfaults with 5.8.1.
248			(I never claimed that I know what I am doing ;).
249	root	1.73	- set default to setjmp/longjmp on non-x86-linux.
250	root	1.72
251	root	1.71	0.6 Thu Nov 21 11:09:06 CET 2002
252			- made lazy context switching the default.
253			- fixed the bug where SemaphoreSet::guard
254			was the same as timed_guard and timed_guard was missing.
255			- fix a memleak in Coro::Timer.
256			- reclassified context sharing as not experimental.
257
258	root	1.70	0.534 Sun Apr 14 03:05:12 CEST 2002
259	root	1.69	- fixed backspace => tab in header parsing (myhttpd).
260	root	1.70	- added eg/readline, for elmex.
261			- Coro::Event now calls ->start on first call instead of
262			->again, which created wrong timeouts for the first ->next.
263			- fixed a bug where Coro::Socket returned a closed socket instead
264			of nothing on ECONNREFUSED and similar error conditions.
265	root	1.69
266	root	1.68	0.533 Mon Feb 18 18:49:40 CET 2002
267			- adapt to finally working Event-0.85.
268			- fixed buggy event initialization (trapped under windows, but how
269			could it possibly have worked anywhere?)
270
271	root	1.67	0.532 Wed Jan 16 02:45:32 CET 2002
272	root	1.66	- removed the reference to pp_entersub, might work on
273			(some) win32 perls now (testsuite works under cygwin,
274			without Event, which freezes).
275	root	1.65
276	root	1.64	0.531 Mon Dec 10 22:18:44 CET 2001
277	root	1.63	- Fixed a bug in SemaphoreSet::timed_down.
278
279	root	1.64	0.53 Tue Nov 27 21:11:13 CET 2001
280	root	1.60	- some tests for Event.
281	root	1.61	- slightly different internal architecture to get refcnt into the object
282			and not the reference. might fix a few bugs, certainly did introduce
283			new ones.
284			- Coro::Timer (independent of Event).
285	root	1.62	- new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
286	root	1.60
287	root	1.64	0.52 Tue Nov 6 21:36:18 CET 2001
288	root	1.58	- ported to cygwin (trivial).
289			patch by Gerrit P. Haase <gp@familiehaase.de>.
290			- small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
291
292	root	1.64	0.51 Thu Nov 1 20:39:01 CET 2001
293	root	1.54	- terminate/cancel now work properly (otherwise termination
294			could cause a "next coroutine is not and contains not..."
295			error.
296	root	1.55	- added Coro::Socket::shutdown.
297	root	1.56	- Coro::Event::loop no is the same as Event::loop.
298			- implemented terminate with args + join.
299	root	1.54
300	root	1.64	0.5 Fri Sep 28 16:15:35 CEST 2001
301	root	1.53	- fixed "print" on a Coro::Handle. The print method worked.
302	root	1.50	- small tweaks (seem to reduce memory consumption a lot)
303			in various modules.
304			- splendid use of "no warnings" scattered throughout.
305	root	1.52	- added Coro::Handle::rbuf, fixed Coro::Handle::fh.
306	root	1.48
307	root	1.47	0.49 Sun Sep 16 02:42:45 CEST 2001
308	root	1.43	- changed some method calls to function calls for speed
309			inside Coro::Handle.
310	root	1.44	- make Coro::Handle use an array instead of a hash for
311			speed reasons.
312			- IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
313			sjlj and ucontext should now work.
314			- IRIX-specific port for libcoro.
315	root	1.45	- swapped order of accept results to match IO::Socket.
316	root	1.46	- changed getsock/peername to sock/peername to match IO::Socket.
317			- fixed a bug that caused segfault when returning to main task
318			under some circumstances.
319			- other bugfixes.
320	root	1.43
321	root	1.42	0.45 Sun Sep 2 02:54:01 CEST 2001
322	root	1.36	- new method Coro::Handle::timeout.
323			- corrected speling of set...name to get...name in Coro::Socket.
324			- Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.
325			- Coro::Handle now supports fileno and FILENO.
326			- added eg/myhttpd, a web server.
327	root	1.37	- Coro::Socket now accepts numeric ports as well as "port(number)"
328			syntax.
329	root	1.38	- moved some scheduling primitives into xs code. more to come.
330	root	1.39	- new simple priority system.
331	root	1.40	- implemented Coro::Event using XS, almost four times faster!
332	root	1.41	- small memory corruption problem fixed (boy that was difficult).
333	root	1.36
334	root	1.35	0.13 Wed Aug 8 16:53:07 CEST 2001
335	root	1.31	- new method Coro::Handle::readline.
336	root	1.34	- added eg/lwp and Coro::Handle::autoflush, to make LWP work.
337			(see eg/lwp on how to make LWP non-blocking).
338	root	1.31	- renamed Coro::Socket::new_inet to new.
339	root	1.32	- added Coro::Util, some utility functions.
340	root	1.33	- die/eval now works better (still get annoying (but true ;)
341			"Callback called exit" messages).
342	root	1.34	- Coro::Handle now supports timeout, and Coro::Socket Timeout.
343			- much better Coro::Socket support.
344	root	1.31
345			0.12 Fri Jul 27 04:19:01 CEST 2001
346	root	1.29	- do not use mmap if neither MAP_ANON nor MAP_ANONYMOUS is defined.
347	root	1.34	- very experimental stack sharing algorithm. not 100% safe but
348	root	1.28	should work well in practise ;)
349	root	1.30	- added Coro::RWLock.
350	root	1.31	- Coro::Specific now works.
351	root	1.28
352			0.11 Tue Jul 24 22:49:21 CEST 2001
353	root	1.27	- added specialized hack for newer and older linux versions (fast).
354			- renamed Coro::Event::IO to Coro::Handle.
355			- new module Coro::Socket.
356
357	root	1.26	0.1 Tue Jul 24 01:47:53 CEST 2001
358	root	1.23	- release candidate 3. A rather new internal structure :(
359	root	1.24	- the great renaming: Damian Conway gave me a suitable replacement
360			for yield.
361	root	1.23	- added Coro/libcoro, a portable coroutine implementation for C
362	root	1.22	(not even perl-dependent!!!), which can be used by Coro::State.
363	root	1.20	- renamed SAVE_DEFSV (on xs-level only) to avoid symbol clash in
364			perl-5.6.
365	root	1.16	- new function Coro::Event::idle.
366			- the idle process is now overriden
367			by default in Coro::Event.
368	root	1.17	- Coro::Channel now enforces the size.
369	root	1.18	- canceling events now works in all cases.
370	root	1.19	- Coro state now include $_ and $@.
371			- yet another bug workaround that I do not really understand :(
372	root	1.21	- new module Coro::Event::IO (very undocumented) to do
373			non-blocking i/o.
374	root	1.25	- performance tuning.
375	root	1.16
376	root	1.15	0.08 Thu Jul 19 06:13:25 CEST 2001
377	root	1.14	- release candidate 2 (new functionality).
378	root	1.13	- add Coro::State::flush function.
379			- transfer now supports a flags value (mostly for speed ATM).
380			- might compile and work in the presence of threads now.
381	root	1.14	- continuations have a saner syntax.
382	root	1.19	- no more memleaks.
383	root	1.13
384	root	1.12	0.07 Tue Jul 17 17:40:18 CEST 2001
385			- release candidate 1 ;)
386			- slightly nicer code.
387			- fixed a scheduling bug in Coro::Event.
388
389	root	1.11	0.06 Tue Jul 17 04:23:24 CEST 2001
390			- ok, I found the showstopper - the same sub must not be
391	root	1.9	re-entered in two different coroutines, otherwise => crash. I
392			see no easy solution to this problem, except by walking the call
393			chaing and saving/restoring the cv's, which is what I do now.
394	root	1.11	- memory leaks still latent, especially at thread termination.
395			- Coro::Event now works (haha).
396	root	1.9
397	root	1.8	0.05 Sun Jul 15 17:32:20 CEST 2001
398			- fixed a few issues in Coro::Event.
399			- I forgot to include Coro::Event in 0.04 :(:(:(
400
401	root	1.7	0.04 Sun Jul 15 05:24:59 CEST 2001
402	root	1.5	- @_ is now properly localized.
403	root	1.4	- Coro::State is now easier subclassable.
404			- Coro::Cont now coroutine-aware.
405			- Coro::Specific is a low-overhead module to create
406			coroutine-specific vars.
407	root	1.6	- Coro::Event provides a simple interface to Event.
408	root	1.4
409	root	1.3	0.03 Fri Jul 13 14:51:52 CEST 2001
410	root	1.4	- transfer() now implemented in XS (beware).
411			- new module Coro::Cont for really faked continuations.
412			- big internal architecture changes: Coro::State is now
413	root	1.3	really low-level and can thus be used to implement other
414	root	1.4	interesting things, While "Coro::" implements a process-like
415			model. Still crude and subject to change.
416	root	1.3	- $_ and $@ are no longer being localized.
417
418	root	1.2	0.02 Tue Jul 10 01:38:17 CEST 2001
419			- implemented "async" attribute.
420			- $_ and $@ are now localized.
421			- added Coro::Channel.
422			- more testcases, still no docs.
423
424	root	1.1	0.01 Tue Jul 3 02:18:41 CEST 2001
425			- original version; copied from Convert::Scalar.
426