[ViewVC] Annotation of: cvs/Coro/Changes

Revision history for Perl extension Coro.

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:	1.116
Committed:	Mon Dec 12 17:49:07 2005 UTC (18 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.115:	+3 -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	1.116	1.51 Mon Dec 12 18:48:36 CET 2005
4			- remove debugging warn() accidentally left in Coro::Select.
5
6	root	1.115	1.5 Tue Nov 29 13:32:44 CET 2005
7	root	1.114	- use Coro::Event inside Coro::Select to avoid spurious deadlocks.
8	root	1.115	- fix Coro::Select 'select'.
9			- strict'ify some modules.
10	root	1.112	- libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
11	root	1.115	- use XSLoader in selected modules.
12			- remove some 5.6 compatibility cruft.
13	root	1.112
14	root	1.111	1.4 Tue Sep 6 00:11:05 CEST 2005
15			- libcoro did not take into account the trampoline on amd64,
16			when 'l'inux method was used.
17
18	root	1.110	1.31 Tue Aug 30 23:31:33 CEST 2005
19			- some portability fixes/workarounds.
20
21	root	1.107	1.3 Sat Aug 20 03:08:56 CEST 2005
22	root	1.108	- no code changes. module seems to work fine.
23	root	1.106	- improve Coro::State docs, remove reference to nonexisting
24			Coro::State::flush method.
25	root	1.107	- no longer autodetect windows, present it as an option instead.
26	root	1.106
27	root	1.105	1.2 Mon May 16 02:00:55 CEST 2005
28	root	1.100	- included libcoro.c earlier in State.xs, might improve portability.
29	root	1.101	- use a faster and possibly more stable Coro::Cont implementation.
30	root	1.102	- accept x86_64 in addition to amd64 for optimized linux-amd64 support.
31	root	1.104	- fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
32	root	1.105	- fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
33	root	1.100
34	root	1.99	1.11 Thu Mar 3 18:00:52 CET 2005
35			- change of contact address.
36
37	root	1.98	1.1 Tue Feb 22 20:51:16 CET 2005
38	root	1.97	- support [l]inux method on amd64.
39	root	1.109	- allow some context switches while compiling/eval'ing.
40	root	1.97
41	root	1.96	1.0 Tue Aug 10 03:47:27 CEST 2004
42	root	1.95	- Event 0.89 fixes the bug again.
43	root	1.96	- fix the remaining(??) memleak. I didn't free the cache-AV for
44			padlists, so one AV per created anon-sub leaked.
45	root	1.95
46	pcg	1.94	0.97 Fri May 14 15:23:32 CEST 2004
47			- remove stupid gcc extension that was an experiment only anyway.
48
49	pcg	1.93	0.96 Thu May 13 18:09:29 CEST 2004
50	root	1.103	- tell people if they have yet another broken Event variant.
51	pcg	1.91	- made Coro to work _better_ with threads (it seems that, as long
52			as you use Coros in one thread only everything will work fine.
53			Looking at the perl source the problem might be missing locking
54			between Coro and some perl internal routines. That's not easily
55			fixable).
56	pcg	1.92	- (hopefully) got rid of the static xnext inside transfer.
57	pcg	1.91
58	pcg	1.90	0.95 Sun Feb 15 03:20:28 CET 2004
59	pcg	1.86	- removed Coro::State::flush, implemented a new and much
60			faster caching mechanism by attaching magic to the CV.
61	pcg	1.87	- a memleak with (real) closures remains.
62	pcg	1.88	- dramatically reduced size of stacks to 65536 (linux/x86), after
63			observing that even myhttpd never had more than a kilobyte
64			of stack in use (stack is still only physically allocated in
65			pagesize increments for systems suporting mmap).
66	pcg	1.89	- fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
67	pcg	1.90	- fix for threaded perl.
68	pcg	1.86
69	pcg	1.85	0.9 Sun Nov 23 04:32:39 CET 2003
70	pcg	1.84	- fix a few very hard to track down but (of course) stupid
71			memory leaks.
72			- stringify version number to avoid locale problems :(.
73	pcg	1.85	- perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
74			hopefully ignoring it "just works".
75	pcg	1.84
76	pcg	1.83	0.8 Wed Nov 5 19:38:40 CET 2003
77			- port to perl5.005_03, but only 5.8.x+ is supported!
78	pcg	1.82	- honor LocalAddr even without LocalPort in Coro::Socket.
79
80	root	1.81	0.7 Tue May 27 03:12:38 CEST 2003
81			- the version jump indicates some level of testing, not gobs
82			of new features.
83	root	1.80	- uh... I found the prompt function in ExtUtils::MakeMaker.
84			Highly correct stuff, that is...
85	root	1.81	- fixed(?) a bug with die's in coroutines causing "panic: top_env".
86			the fix is not well understood by the author, so beware :(.
87	root	1.80
88	root	1.79	0.652 Thu May 8 02:54:46 CEST 2003
89	root	1.76	- Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
90	root	1.78	cause version 4 doesn't have ucontext.
91	root	1.77	- Benjamin Reed reported that setjmp works fine on darwin,
92			so preselect it.
93	root	1.76
94	root	1.75	0.651 Sat Mar 29 15:00:23 CET 2003
95			- fix a bug in Coro::Handle where some bytes could get lost
96			on reading, reported by jason@nichego.net.
97	root	1.74
98	root	1.73	0.65 Sun Mar 23 00:08:26 CET 2003
99	root	1.72	- added a README.linux-glibc.
100			- new module Coro::Select.
101			- also save/restore PL_comppad, fixes segfaults with 5.8.1.
102			(I never claimed that I know what I am doing ;).
103	root	1.73	- set default to setjmp/longjmp on non-x86-linux.
104	root	1.72
105	root	1.71	0.6 Thu Nov 21 11:09:06 CET 2002
106			- made lazy context switching the default.
107			- fixed the bug where SemaphoreSet::guard
108			was the same as timed_guard and timed_guard was missing.
109			- fix a memleak in Coro::Timer.
110			- reclassified context sharing as not experimental.
111
112	root	1.70	0.534 Sun Apr 14 03:05:12 CEST 2002
113	root	1.69	- fixed backspace => tab in header parsing (myhttpd).
114	root	1.70	- added eg/readline, for elmex.
115			- Coro::Event now calls ->start on first call instead of
116			->again, which created wrong timeouts for the first ->next.
117			- fixed a bug where Coro::Socket returned a closed socket instead
118			of nothing on ECONNREFUSED and similar error conditions.
119	root	1.69
120	root	1.68	0.533 Mon Feb 18 18:49:40 CET 2002
121			- adapt to finally working Event-0.85.
122			- fixed buggy event initialization (trapped under windows, but how
123			could it possibly have worked anywhere?)
124
125	root	1.67	0.532 Wed Jan 16 02:45:32 CET 2002
126	root	1.66	- removed the reference to pp_entersub, might work on
127			(some) win32 perls now (testsuite works under cygwin,
128			without Event, which freezes).
129	root	1.65
130	root	1.64	0.531 Mon Dec 10 22:18:44 CET 2001
131	root	1.63	- Fixed a bug in SemaphoreSet::timed_down.
132
133	root	1.64	0.53 Tue Nov 27 21:11:13 CET 2001
134	root	1.60	- some tests for Event.
135	root	1.61	- slightly different internal architecture to get refcnt into the object
136			and not the reference. might fix a few bugs, certainly did introduce
137			new ones.
138			- Coro::Timer (independent of Event).
139	root	1.62	- new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
140	root	1.60
141	root	1.64	0.52 Tue Nov 6 21:36:18 CET 2001
142	root	1.58	- ported to cygwin (trivial).
143			patch by Gerrit P. Haase <gp@familiehaase.de>.
144			- small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
145
146	root	1.64	0.51 Thu Nov 1 20:39:01 CET 2001
147	root	1.54	- terminate/cancel now work properly (otherwise termination
148			could cause a "next coroutine is not and contains not..."
149			error.
150	root	1.55	- added Coro::Socket::shutdown.
151	root	1.56	- Coro::Event::loop no is the same as Event::loop.
152			- implemented terminate with args + join.
153	root	1.54
154	root	1.64	0.5 Fri Sep 28 16:15:35 CEST 2001
155	root	1.53	- fixed "print" on a Coro::Handle. The print method worked.
156	root	1.50	- small tweaks (seem to reduce memory consumption a lot)
157			in various modules.
158			- splendid use of "no warnings" scattered throughout.
159	root	1.52	- added Coro::Handle::rbuf, fixed Coro::Handle::fh.
160	root	1.48
161	root	1.47	0.49 Sun Sep 16 02:42:45 CEST 2001
162	root	1.43	- changed some method calls to function calls for speed
163			inside Coro::Handle.
164	root	1.44	- make Coro::Handle use an array instead of a hash for
165			speed reasons.
166			- IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
167			sjlj and ucontext should now work.
168			- IRIX-specific port for libcoro.
169	root	1.45	- swapped order of accept results to match IO::Socket.
170	root	1.46	- changed getsock/peername to sock/peername to match IO::Socket.
171			- fixed a bug that caused segfault when returning to main task
172			under some circumstances.
173			- other bugfixes.
174	root	1.43
175	root	1.42	0.45 Sun Sep 2 02:54:01 CEST 2001
176	root	1.36	- new method Coro::Handle::timeout.
177			- corrected speling of set...name to get...name in Coro::Socket.
178			- Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.
179			- Coro::Handle now supports fileno and FILENO.
180			- added eg/myhttpd, a web server.
181	root	1.37	- Coro::Socket now accepts numeric ports as well as "port(number)"
182			syntax.
183	root	1.38	- moved some scheduling primitives into xs code. more to come.
184	root	1.39	- new simple priority system.
185	root	1.40	- implemented Coro::Event using XS, almost four times faster!
186	root	1.41	- small memory corruption problem fixed (boy that was difficult).
187	root	1.36
188	root	1.35	0.13 Wed Aug 8 16:53:07 CEST 2001
189	root	1.31	- new method Coro::Handle::readline.
190	root	1.34	- added eg/lwp and Coro::Handle::autoflush, to make LWP work.
191			(see eg/lwp on how to make LWP non-blocking).
192	root	1.31	- renamed Coro::Socket::new_inet to new.
193	root	1.32	- added Coro::Util, some utility functions.
194	root	1.33	- die/eval now works better (still get annoying (but true ;)
195			"Callback called exit" messages).
196	root	1.34	- Coro::Handle now supports timeout, and Coro::Socket Timeout.
197			- much better Coro::Socket support.
198	root	1.31
199			0.12 Fri Jul 27 04:19:01 CEST 2001
200	root	1.29	- do not use mmap if neither MAP_ANON nor MAP_ANONYMOUS is defined.
201	root	1.34	- very experimental stack sharing algorithm. not 100% safe but
202	root	1.28	should work well in practise ;)
203	root	1.30	- added Coro::RWLock.
204	root	1.31	- Coro::Specific now works.
205	root	1.28
206			0.11 Tue Jul 24 22:49:21 CEST 2001
207	root	1.27	- added specialized hack for newer and older linux versions (fast).
208			- renamed Coro::Event::IO to Coro::Handle.
209			- new module Coro::Socket.
210
211	root	1.26	0.1 Tue Jul 24 01:47:53 CEST 2001
212	root	1.23	- release candidate 3. A rather new internal structure :(
213	root	1.24	- the great renaming: Damian Conway gave me a suitable replacement
214			for yield.
215	root	1.23	- added Coro/libcoro, a portable coroutine implementation for C
216	root	1.22	(not even perl-dependent!!!), which can be used by Coro::State.
217	root	1.20	- renamed SAVE_DEFSV (on xs-level only) to avoid symbol clash in
218			perl-5.6.
219	root	1.16	- new function Coro::Event::idle.
220			- the idle process is now overriden
221			by default in Coro::Event.
222	root	1.17	- Coro::Channel now enforces the size.
223	root	1.18	- canceling events now works in all cases.
224	root	1.19	- Coro state now include $_ and $@.
225			- yet another bug workaround that I do not really understand :(
226	root	1.21	- new module Coro::Event::IO (very undocumented) to do
227			non-blocking i/o.
228	root	1.25	- performance tuning.
229	root	1.16
230	root	1.15	0.08 Thu Jul 19 06:13:25 CEST 2001
231	root	1.14	- release candidate 2 (new functionality).
232	root	1.13	- add Coro::State::flush function.
233			- transfer now supports a flags value (mostly for speed ATM).
234			- might compile and work in the presence of threads now.
235	root	1.14	- continuations have a saner syntax.
236	root	1.19	- no more memleaks.
237	root	1.13
238	root	1.12	0.07 Tue Jul 17 17:40:18 CEST 2001
239			- release candidate 1 ;)
240			- slightly nicer code.
241			- fixed a scheduling bug in Coro::Event.
242
243	root	1.11	0.06 Tue Jul 17 04:23:24 CEST 2001
244			- ok, I found the showstopper - the same sub must not be
245	root	1.9	re-entered in two different coroutines, otherwise => crash. I
246			see no easy solution to this problem, except by walking the call
247			chaing and saving/restoring the cv's, which is what I do now.
248	root	1.11	- memory leaks still latent, especially at thread termination.
249			- Coro::Event now works (haha).
250	root	1.9
251	root	1.8	0.05 Sun Jul 15 17:32:20 CEST 2001
252			- fixed a few issues in Coro::Event.
253			- I forgot to include Coro::Event in 0.04 :(:(:(
254
255	root	1.7	0.04 Sun Jul 15 05:24:59 CEST 2001
256	root	1.5	- @_ is now properly localized.
257	root	1.4	- Coro::State is now easier subclassable.
258			- Coro::Cont now coroutine-aware.
259			- Coro::Specific is a low-overhead module to create
260			coroutine-specific vars.
261	root	1.6	- Coro::Event provides a simple interface to Event.
262	root	1.4
263	root	1.3	0.03 Fri Jul 13 14:51:52 CEST 2001
264	root	1.4	- transfer() now implemented in XS (beware).
265			- new module Coro::Cont for really faked continuations.
266			- big internal architecture changes: Coro::State is now
267	root	1.3	really low-level and can thus be used to implement other
268	root	1.4	interesting things, While "Coro::" implements a process-like
269			model. Still crude and subject to change.
270	root	1.3	- $_ and $@ are no longer being localized.
271
272	root	1.2	0.02 Tue Jul 10 01:38:17 CEST 2001
273			- implemented "async" attribute.
274			- $_ and $@ are now localized.
275			- added Coro::Channel.
276			- more testcases, still no docs.
277
278	root	1.1	0.01 Tue Jul 3 02:18:41 CEST 2001
279			- original version; copied from Convert::Scalar.
280