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