[ViewVC] Annotation of: cvs/Coro/Changes

Revision history for Perl extension Coro.

        - improve Coro::State docs, remove reference to nonexisting
          Coro::State::flush method.

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.
        - make some context switches while compiling/eval'ing work.

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:	1.106
Committed:	Sat Aug 20 00:52:24 2005 UTC (18 years, 9 months ago) by root
Branch:	MAIN
Changes since 1.105:	+3 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	Revision history for Perl extension Coro.
2
3	root	1.106	- improve Coro::State docs, remove reference to nonexisting
4			Coro::State::flush method.
5
6	root	1.105	1.2 Mon May 16 02:00:55 CEST 2005
7	root	1.100	- included libcoro.c earlier in State.xs, might improve portability.
8	root	1.101	- use a faster and possibly more stable Coro::Cont implementation.
9	root	1.102	- accept x86_64 in addition to amd64 for optimized linux-amd64 support.
10	root	1.104	- fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
11	root	1.105	- fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
12	root	1.100
13	root	1.99	1.11 Thu Mar 3 18:00:52 CET 2005
14			- change of contact address.
15
16	root	1.98	1.1 Tue Feb 22 20:51:16 CET 2005
17	root	1.97	- support [l]inux method on amd64.
18	root	1.99	- make some context switches while compiling/eval'ing work.
19	root	1.97
20	root	1.96	1.0 Tue Aug 10 03:47:27 CEST 2004
21	root	1.95	- Event 0.89 fixes the bug again.
22	root	1.96	- fix the remaining(??) memleak. I didn't free the cache-AV for
23			padlists, so one AV per created anon-sub leaked.
24	root	1.95
25	pcg	1.94	0.97 Fri May 14 15:23:32 CEST 2004
26			- remove stupid gcc extension that was an experiment only anyway.
27
28	pcg	1.93	0.96 Thu May 13 18:09:29 CEST 2004
29	root	1.103	- tell people if they have yet another broken Event variant.
30	pcg	1.91	- made Coro to work _better_ with threads (it seems that, as long
31			as you use Coros in one thread only everything will work fine.
32			Looking at the perl source the problem might be missing locking
33			between Coro and some perl internal routines. That's not easily
34			fixable).
35	pcg	1.92	- (hopefully) got rid of the static xnext inside transfer.
36	pcg	1.91
37	pcg	1.90	0.95 Sun Feb 15 03:20:28 CET 2004
38	pcg	1.86	- removed Coro::State::flush, implemented a new and much
39			faster caching mechanism by attaching magic to the CV.
40	pcg	1.87	- a memleak with (real) closures remains.
41	pcg	1.88	- dramatically reduced size of stacks to 65536 (linux/x86), after
42			observing that even myhttpd never had more than a kilobyte
43			of stack in use (stack is still only physically allocated in
44			pagesize increments for systems suporting mmap).
45	pcg	1.89	- fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
46	pcg	1.90	- fix for threaded perl.
47	pcg	1.86
48	pcg	1.85	0.9 Sun Nov 23 04:32:39 CET 2003
49	pcg	1.84	- fix a few very hard to track down but (of course) stupid
50			memory leaks.
51			- stringify version number to avoid locale problems :(.
52	pcg	1.85	- perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
53			hopefully ignoring it "just works".
54	pcg	1.84
55	pcg	1.83	0.8 Wed Nov 5 19:38:40 CET 2003
56			- port to perl5.005_03, but only 5.8.x+ is supported!
57	pcg	1.82	- honor LocalAddr even without LocalPort in Coro::Socket.
58
59	root	1.81	0.7 Tue May 27 03:12:38 CEST 2003
60			- the version jump indicates some level of testing, not gobs
61			of new features.
62	root	1.80	- uh... I found the prompt function in ExtUtils::MakeMaker.
63			Highly correct stuff, that is...
64	root	1.81	- fixed(?) a bug with die's in coroutines causing "panic: top_env".
65			the fix is not well understood by the author, so beware :(.
66	root	1.80
67	root	1.79	0.652 Thu May 8 02:54:46 CEST 2003
68	root	1.76	- Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
69	root	1.78	cause version 4 doesn't have ucontext.
70	root	1.77	- Benjamin Reed reported that setjmp works fine on darwin,
71			so preselect it.
72	root	1.76
73	root	1.75	0.651 Sat Mar 29 15:00:23 CET 2003
74			- fix a bug in Coro::Handle where some bytes could get lost
75			on reading, reported by jason@nichego.net.
76	root	1.74
77	root	1.73	0.65 Sun Mar 23 00:08:26 CET 2003
78	root	1.72	- added a README.linux-glibc.
79			- new module Coro::Select.
80			- also save/restore PL_comppad, fixes segfaults with 5.8.1.
81			(I never claimed that I know what I am doing ;).
82	root	1.73	- set default to setjmp/longjmp on non-x86-linux.
83	root	1.72
84	root	1.71	0.6 Thu Nov 21 11:09:06 CET 2002
85			- made lazy context switching the default.
86			- fixed the bug where SemaphoreSet::guard
87			was the same as timed_guard and timed_guard was missing.
88			- fix a memleak in Coro::Timer.
89			- reclassified context sharing as not experimental.
90
91	root	1.70	0.534 Sun Apr 14 03:05:12 CEST 2002
92	root	1.69	- fixed backspace => tab in header parsing (myhttpd).
93	root	1.70	- added eg/readline, for elmex.
94			- Coro::Event now calls ->start on first call instead of
95			->again, which created wrong timeouts for the first ->next.
96			- fixed a bug where Coro::Socket returned a closed socket instead
97			of nothing on ECONNREFUSED and similar error conditions.
98	root	1.69
99	root	1.68	0.533 Mon Feb 18 18:49:40 CET 2002
100			- adapt to finally working Event-0.85.
101			- fixed buggy event initialization (trapped under windows, but how
102			could it possibly have worked anywhere?)
103
104	root	1.67	0.532 Wed Jan 16 02:45:32 CET 2002
105	root	1.66	- removed the reference to pp_entersub, might work on
106			(some) win32 perls now (testsuite works under cygwin,
107			without Event, which freezes).
108	root	1.65
109	root	1.64	0.531 Mon Dec 10 22:18:44 CET 2001
110	root	1.63	- Fixed a bug in SemaphoreSet::timed_down.
111
112	root	1.64	0.53 Tue Nov 27 21:11:13 CET 2001
113	root	1.60	- some tests for Event.
114	root	1.61	- slightly different internal architecture to get refcnt into the object
115			and not the reference. might fix a few bugs, certainly did introduce
116			new ones.
117			- Coro::Timer (independent of Event).
118	root	1.62	- new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
119	root	1.60
120	root	1.64	0.52 Tue Nov 6 21:36:18 CET 2001
121	root	1.58	- ported to cygwin (trivial).
122			patch by Gerrit P. Haase <gp@familiehaase.de>.
123			- small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
124
125	root	1.64	0.51 Thu Nov 1 20:39:01 CET 2001
126	root	1.54	- terminate/cancel now work properly (otherwise termination
127			could cause a "next coroutine is not and contains not..."
128			error.
129	root	1.55	- added Coro::Socket::shutdown.
130	root	1.56	- Coro::Event::loop no is the same as Event::loop.
131			- implemented terminate with args + join.
132	root	1.54
133	root	1.64	0.5 Fri Sep 28 16:15:35 CEST 2001
134	root	1.53	- fixed "print" on a Coro::Handle. The print method worked.
135	root	1.50	- small tweaks (seem to reduce memory consumption a lot)
136			in various modules.
137			- splendid use of "no warnings" scattered throughout.
138	root	1.52	- added Coro::Handle::rbuf, fixed Coro::Handle::fh.
139	root	1.48
140	root	1.47	0.49 Sun Sep 16 02:42:45 CEST 2001
141	root	1.43	- changed some method calls to function calls for speed
142			inside Coro::Handle.
143	root	1.44	- make Coro::Handle use an array instead of a hash for
144			speed reasons.
145			- IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
146			sjlj and ucontext should now work.
147			- IRIX-specific port for libcoro.
148	root	1.45	- swapped order of accept results to match IO::Socket.
149	root	1.46	- changed getsock/peername to sock/peername to match IO::Socket.
150			- fixed a bug that caused segfault when returning to main task
151			under some circumstances.
152			- other bugfixes.
153	root	1.43
154	root	1.42	0.45 Sun Sep 2 02:54:01 CEST 2001
155	root	1.36	- new method Coro::Handle::timeout.
156			- corrected speling of set...name to get...name in Coro::Socket.
157			- Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.
158			- Coro::Handle now supports fileno and FILENO.
159			- added eg/myhttpd, a web server.
160	root	1.37	- Coro::Socket now accepts numeric ports as well as "port(number)"
161			syntax.
162	root	1.38	- moved some scheduling primitives into xs code. more to come.
163	root	1.39	- new simple priority system.
164	root	1.40	- implemented Coro::Event using XS, almost four times faster!
165	root	1.41	- small memory corruption problem fixed (boy that was difficult).
166	root	1.36
167	root	1.35	0.13 Wed Aug 8 16:53:07 CEST 2001
168	root	1.31	- new method Coro::Handle::readline.
169	root	1.34	- added eg/lwp and Coro::Handle::autoflush, to make LWP work.
170			(see eg/lwp on how to make LWP non-blocking).
171	root	1.31	- renamed Coro::Socket::new_inet to new.
172	root	1.32	- added Coro::Util, some utility functions.
173	root	1.33	- die/eval now works better (still get annoying (but true ;)
174			"Callback called exit" messages).
175	root	1.34	- Coro::Handle now supports timeout, and Coro::Socket Timeout.
176			- much better Coro::Socket support.
177	root	1.31
178			0.12 Fri Jul 27 04:19:01 CEST 2001
179	root	1.29	- do not use mmap if neither MAP_ANON nor MAP_ANONYMOUS is defined.
180	root	1.34	- very experimental stack sharing algorithm. not 100% safe but
181	root	1.28	should work well in practise ;)
182	root	1.30	- added Coro::RWLock.
183	root	1.31	- Coro::Specific now works.
184	root	1.28
185			0.11 Tue Jul 24 22:49:21 CEST 2001
186	root	1.27	- added specialized hack for newer and older linux versions (fast).
187			- renamed Coro::Event::IO to Coro::Handle.
188			- new module Coro::Socket.
189
190	root	1.26	0.1 Tue Jul 24 01:47:53 CEST 2001
191	root	1.23	- release candidate 3. A rather new internal structure :(
192	root	1.24	- the great renaming: Damian Conway gave me a suitable replacement
193			for yield.
194	root	1.23	- added Coro/libcoro, a portable coroutine implementation for C
195	root	1.22	(not even perl-dependent!!!), which can be used by Coro::State.
196	root	1.20	- renamed SAVE_DEFSV (on xs-level only) to avoid symbol clash in
197			perl-5.6.
198	root	1.16	- new function Coro::Event::idle.
199			- the idle process is now overriden
200			by default in Coro::Event.
201	root	1.17	- Coro::Channel now enforces the size.
202	root	1.18	- canceling events now works in all cases.
203	root	1.19	- Coro state now include $_ and $@.
204			- yet another bug workaround that I do not really understand :(
205	root	1.21	- new module Coro::Event::IO (very undocumented) to do
206			non-blocking i/o.
207	root	1.25	- performance tuning.
208	root	1.16
209	root	1.15	0.08 Thu Jul 19 06:13:25 CEST 2001
210	root	1.14	- release candidate 2 (new functionality).
211	root	1.13	- add Coro::State::flush function.
212			- transfer now supports a flags value (mostly for speed ATM).
213			- might compile and work in the presence of threads now.
214	root	1.14	- continuations have a saner syntax.
215	root	1.19	- no more memleaks.
216	root	1.13
217	root	1.12	0.07 Tue Jul 17 17:40:18 CEST 2001
218			- release candidate 1 ;)
219			- slightly nicer code.
220			- fixed a scheduling bug in Coro::Event.
221
222	root	1.11	0.06 Tue Jul 17 04:23:24 CEST 2001
223			- ok, I found the showstopper - the same sub must not be
224	root	1.9	re-entered in two different coroutines, otherwise => crash. I
225			see no easy solution to this problem, except by walking the call
226			chaing and saving/restoring the cv's, which is what I do now.
227	root	1.11	- memory leaks still latent, especially at thread termination.
228			- Coro::Event now works (haha).
229	root	1.9
230	root	1.8	0.05 Sun Jul 15 17:32:20 CEST 2001
231			- fixed a few issues in Coro::Event.
232			- I forgot to include Coro::Event in 0.04 :(:(:(
233
234	root	1.7	0.04 Sun Jul 15 05:24:59 CEST 2001
235	root	1.5	- @_ is now properly localized.
236	root	1.4	- Coro::State is now easier subclassable.
237			- Coro::Cont now coroutine-aware.
238			- Coro::Specific is a low-overhead module to create
239			coroutine-specific vars.
240	root	1.6	- Coro::Event provides a simple interface to Event.
241	root	1.4
242	root	1.3	0.03 Fri Jul 13 14:51:52 CEST 2001
243	root	1.4	- transfer() now implemented in XS (beware).
244			- new module Coro::Cont for really faked continuations.
245			- big internal architecture changes: Coro::State is now
246	root	1.3	really low-level and can thus be used to implement other
247	root	1.4	interesting things, While "Coro::" implements a process-like
248			model. Still crude and subject to change.
249	root	1.3	- $_ and $@ are no longer being localized.
250
251	root	1.2	0.02 Tue Jul 10 01:38:17 CEST 2001
252			- implemented "async" attribute.
253			- $_ and $@ are now localized.
254			- added Coro::Channel.
255			- more testcases, still no docs.
256
257	root	1.1	0.01 Tue Jul 3 02:18:41 CEST 2001
258			- original version; copied from Convert::Scalar.
259