[ViewVC] Annotation of: cvs/Coro/Changes

Revision history for Perl extension Coro.

TODO: transfer flags must be per state
TODO: better (earlier) error messages on broken transfer's

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