[ViewVC] Annotation of: cvs/Coro/Changes

Revision history for Perl extension Coro.

TODO: better (earlier) error messages on broken transfer's
TODO: "internals mode"
TODO: "use defaults for everything"

        - improve portability to slightly older perls.
        - use cleaner coroutine destruction.

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

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

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

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

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

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

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

1.9  (never properly released due to a glitch)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Revision:	1.181
Committed:	Tue Dec 12 04:21:09 2006 UTC (17 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.180:	+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	1.173	TODO: better (earlier) error messages on broken transfer's
4	root	1.180	TODO: "internals mode"
5	root	1.181	TODO: "use defaults for everything"
6	root	1.173
7	root	1.179	- improve portability to slightly older perls.
8	root	1.180	- use cleaner coroutine destruction.
9	root	1.179
10	root	1.178	3.11 Tue Dec 5 13:11:24 CET 2006
11			- fixed some bogus assert's, but as perl.h disables assert even
12			without NDEBUG (thank you very much), not too many people should
13			notice (that did include myself). Andreas König noticed, though :)
14			- do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
15			it. Also noticed by Andreas König :)
16			- save/restore tainted status.
17			- verified to pass the testsuite on my 5.9.5.
18
19	root	1.177	3.1 Mon Dec 4 23:03:40 CET 2006
20			- INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
21	root	1.175	- incompatible change: transfer flags are now per-state.
22	root	1.173	- give a better error message on deadlock.
23	root	1.175	- document Coro::nready.
24	root	1.174	- enhanced testsuite.
25	root	1.169
26	root	1.172	3.01 Sun Dec 3 23:47:42 CET 2006
27			- forgot to include Coro::Timer.
28
29	root	1.171	3.0 Sun Dec 3 22:57:25 CET 2006
30	root	1.163	- the "FINALLY COMPLETELY STABLE" release (coming soon:
31			the "FAMOUS LAST WORDS" release).
32	root	1.166	- implement a new stack sharing algorithm, which uses a stack
33			pool (size currently hardcoded).
34	root	1.155	- make stack sharing mandatory (it no longer uses a heuristic).
35	root	1.157	- eval/die no longer cause weird problems under heavy use.
36	root	1.152	- Coro::Event could cause livelocks if it was used but
37	root	1.161	no Coro::Event watchers were used.
38	root	1.167	- Coro::Event now uses asynccheck as prepare does not
39			check for changed watchers.
40	root	1.170	- Coro::Event allows multiple waiting coros and will wake up one
41			per event.
42	root	1.152	- Coro::Event should be cleaner and more efficient now.
43	root	1.165	- new utility function Coro::unblock_sub.
44	root	1.164	- document the sad fact that Event is no longer reentrant.
45	root	1.163	- putting a coroutine into the ready queue twice could under
46			some circumstances lead to stack corruption.
47	root	1.161	- minor incompatibility: subclassing Coro::State is supported
48			directly now without going through a _coro_state member.
49	root	1.156	- state/coro switching is much faster now.
50	root	1.154	- very minor optimisations and code/documentation cleanup.
51	root	1.153	- avoid problems due to compiler inlining.
52	root	1.154	- removed timers from Coro::Timer -> use AnyEvent instead.
53			- replaced Coro::idle coroutine by (cleaner) idle handler.
54	root	1.156	- updated to newest libcoro.
55	root	1.159	- implement enhanced support for valgrind.
56	root	1.162	- implement is_ready and return value for ready.
57	root	1.168	- removed Coro::Cont, it was a misnomer (it's generators),
58			and it was somewhat annoying to get it right. Will come back
59			if somebody asks for it :)
60	root	1.163	- many ->wait methods and Coro::Event could return
61			spuriously without the event having happened.
62	root	1.146
63	root	1.145	2.5 Tue Nov 7 12:22:33 CET 2006
64	root	1.143	- made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
65			use AnyEvent, moved them to Coro/.
66	root	1.140	- added Coro::LWP which contains all the uglyness required to
67			make LWP non-blocking.
68			- should work with perl 5.9.x now (Andreas König made me do it).
69	root	1.141	- fixed another bug in Coro::Select when the timeout was undef.
70	root	1.136	- reuse PL_start_env for all coros, saves some memory per coroutine.
71			- manage PL_top_env differently, hopefully to avoid panic: top_env.
72	root	1.137	- timeout argument was not properly used in Coro::Socket.
73			- allow limited forms of subclassing in Coro::Handle/Coro::Socket.
74	root	1.138	- emulate undocumented(!) functionality of IO::Socket required
75			by LWP(!!).
76			- updated eg/lwp to work with newer lwp's.
77	root	1.140	- remove "FATAL: uncaught exception" prefix. Coroutines that die
78			kill the whole process, just as exceptions in the main "coroutine"
79			did already.
80	root	1.135
81	root	1.134	2.1 Wed Nov 1 23:01:13 CET 2006
82			- fix a long-standing bug in Coro::Select where select with
83			zero timeout would instead change the current default filehandle.
84	root	1.132	- use a simpler and hopefully more robust way to clone padlists
85			(uses less memory and a perl function instead of our own).
86			- coro can now create a stack guard area on many architectures.
87	root	1.134	- Coro::AIO properly reexports additional functions from IO::AIO.
88	root	1.132	- updated libcoro with a workaround for OS X,
89	root	1.134	pach and testing by Michael Schwern.
90	root	1.130
91	root	1.129	2.0 Tue Oct 24 05:47:17 CEST 2006
92	root	1.128	- support additional aio requests in Coro::AIO.
93
94	root	1.129	1.9 (never properly released due to a glitch)
95
96	root	1.127	1.8 Thu Feb 2 00:59:06 CET 2006
97	root	1.125	- applied suggested patch by SAMV to avoid problems during stupid
98			mark & sweep gc run.
99	root	1.126	- applied patch by Scott Walters for 5.9.3 compatibility.
100	root	1.125
101	root	1.124	1.7 Tue Dec 27 01:41:58 CET 2005
102	root	1.123	- added Coro::AIO, a thin wrapper around IO::AIO.
103	root	1.122	- improved Makefile.PL explanations.
104
105	root	1.119	1.6 Mon Dec 12 21:30:05 CET 2005
106	root	1.117	- additionally save PM_curpm might fix as-of-yet
107	root	1.121	unseen problems with regex matches being attributed to the
108	root	1.117	wrong package.
109	root	1.118	- add t/10_bugs.t, which currently checks against imho broken
110			perls that use 0.26MB of stack space per Perl_magic_get
111	root	1.121	invocation (newer linuxes) as opposed to the 0.0002MB perl
112			normally uses.
113	root	1.120	- make stacksize configurable for the ultimate debian experience.
114	root	1.117
115	root	1.116	1.51 Mon Dec 12 18:48:36 CET 2005
116			- remove debugging warn() accidentally left in Coro::Select.
117
118	root	1.115	1.5 Tue Nov 29 13:32:44 CET 2005
119	root	1.114	- use Coro::Event inside Coro::Select to avoid spurious deadlocks.
120	root	1.115	- fix Coro::Select 'select'.
121			- strict'ify some modules.
122	root	1.112	- libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
123	root	1.115	- use XSLoader in selected modules.
124			- remove some 5.6 compatibility cruft.
125	root	1.112
126	root	1.111	1.4 Tue Sep 6 00:11:05 CEST 2005
127			- libcoro did not take into account the trampoline on amd64,
128			when 'l'inux method was used.
129
130	root	1.110	1.31 Tue Aug 30 23:31:33 CEST 2005
131			- some portability fixes/workarounds.
132
133	root	1.107	1.3 Sat Aug 20 03:08:56 CEST 2005
134	root	1.108	- no code changes. module seems to work fine.
135	root	1.106	- improve Coro::State docs, remove reference to nonexisting
136			Coro::State::flush method.
137	root	1.107	- no longer autodetect windows, present it as an option instead.
138	root	1.106
139	root	1.105	1.2 Mon May 16 02:00:55 CEST 2005
140	root	1.100	- included libcoro.c earlier in State.xs, might improve portability.
141	root	1.101	- use a faster and possibly more stable Coro::Cont implementation.
142	root	1.102	- accept x86_64 in addition to amd64 for optimized linux-amd64 support.
143	root	1.104	- fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
144	root	1.105	- fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
145	root	1.100
146	root	1.99	1.11 Thu Mar 3 18:00:52 CET 2005
147			- change of contact address.
148
149	root	1.98	1.1 Tue Feb 22 20:51:16 CET 2005
150	root	1.97	- support [l]inux method on amd64.
151	root	1.109	- allow some context switches while compiling/eval'ing.
152	root	1.97
153	root	1.96	1.0 Tue Aug 10 03:47:27 CEST 2004
154	root	1.95	- Event 0.89 fixes the bug again.
155	root	1.96	- fix the remaining(??) memleak. I didn't free the cache-AV for
156			padlists, so one AV per created anon-sub leaked.
157	root	1.95
158	pcg	1.94	0.97 Fri May 14 15:23:32 CEST 2004
159			- remove stupid gcc extension that was an experiment only anyway.
160
161	pcg	1.93	0.96 Thu May 13 18:09:29 CEST 2004
162	root	1.103	- tell people if they have yet another broken Event variant.
163	pcg	1.91	- made Coro to work _better_ with threads (it seems that, as long
164			as you use Coros in one thread only everything will work fine.
165			Looking at the perl source the problem might be missing locking
166			between Coro and some perl internal routines. That's not easily
167			fixable).
168	pcg	1.92	- (hopefully) got rid of the static xnext inside transfer.
169	pcg	1.91
170	pcg	1.90	0.95 Sun Feb 15 03:20:28 CET 2004
171	pcg	1.86	- removed Coro::State::flush, implemented a new and much
172			faster caching mechanism by attaching magic to the CV.
173	pcg	1.87	- a memleak with (real) closures remains.
174	pcg	1.88	- dramatically reduced size of stacks to 65536 (linux/x86), after
175			observing that even myhttpd never had more than a kilobyte
176			of stack in use (stack is still only physically allocated in
177			pagesize increments for systems suporting mmap).
178	pcg	1.89	- fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
179	pcg	1.90	- fix for threaded perl.
180	pcg	1.86
181	pcg	1.85	0.9 Sun Nov 23 04:32:39 CET 2003
182	pcg	1.84	- fix a few very hard to track down but (of course) stupid
183			memory leaks.
184			- stringify version number to avoid locale problems :(.
185	pcg	1.85	- perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
186			hopefully ignoring it "just works".
187	pcg	1.84
188	pcg	1.83	0.8 Wed Nov 5 19:38:40 CET 2003
189			- port to perl5.005_03, but only 5.8.x+ is supported!
190	pcg	1.82	- honor LocalAddr even without LocalPort in Coro::Socket.
191
192	root	1.81	0.7 Tue May 27 03:12:38 CEST 2003
193			- the version jump indicates some level of testing, not gobs
194			of new features.
195	root	1.80	- uh... I found the prompt function in ExtUtils::MakeMaker.
196			Highly correct stuff, that is...
197	root	1.81	- fixed(?) a bug with die's in coroutines causing "panic: top_env".
198			the fix is not well understood by the author, so beware :(.
199	root	1.80
200	root	1.79	0.652 Thu May 8 02:54:46 CEST 2003
201	root	1.76	- Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
202	root	1.78	cause version 4 doesn't have ucontext.
203	root	1.77	- Benjamin Reed reported that setjmp works fine on darwin,
204			so preselect it.
205	root	1.76
206	root	1.75	0.651 Sat Mar 29 15:00:23 CET 2003
207			- fix a bug in Coro::Handle where some bytes could get lost
208			on reading, reported by jason@nichego.net.
209	root	1.74
210	root	1.73	0.65 Sun Mar 23 00:08:26 CET 2003
211	root	1.72	- added a README.linux-glibc.
212			- new module Coro::Select.
213			- also save/restore PL_comppad, fixes segfaults with 5.8.1.
214			(I never claimed that I know what I am doing ;).
215	root	1.73	- set default to setjmp/longjmp on non-x86-linux.
216	root	1.72
217	root	1.71	0.6 Thu Nov 21 11:09:06 CET 2002
218			- made lazy context switching the default.
219			- fixed the bug where SemaphoreSet::guard
220			was the same as timed_guard and timed_guard was missing.
221			- fix a memleak in Coro::Timer.
222			- reclassified context sharing as not experimental.
223
224	root	1.70	0.534 Sun Apr 14 03:05:12 CEST 2002
225	root	1.69	- fixed backspace => tab in header parsing (myhttpd).
226	root	1.70	- added eg/readline, for elmex.
227			- Coro::Event now calls ->start on first call instead of
228			->again, which created wrong timeouts for the first ->next.
229			- fixed a bug where Coro::Socket returned a closed socket instead
230			of nothing on ECONNREFUSED and similar error conditions.
231	root	1.69
232	root	1.68	0.533 Mon Feb 18 18:49:40 CET 2002
233			- adapt to finally working Event-0.85.
234			- fixed buggy event initialization (trapped under windows, but how
235			could it possibly have worked anywhere?)
236
237	root	1.67	0.532 Wed Jan 16 02:45:32 CET 2002
238	root	1.66	- removed the reference to pp_entersub, might work on
239			(some) win32 perls now (testsuite works under cygwin,
240			without Event, which freezes).
241	root	1.65
242	root	1.64	0.531 Mon Dec 10 22:18:44 CET 2001
243	root	1.63	- Fixed a bug in SemaphoreSet::timed_down.
244
245	root	1.64	0.53 Tue Nov 27 21:11:13 CET 2001
246	root	1.60	- some tests for Event.
247	root	1.61	- slightly different internal architecture to get refcnt into the object
248			and not the reference. might fix a few bugs, certainly did introduce
249			new ones.
250			- Coro::Timer (independent of Event).
251	root	1.62	- new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
252	root	1.60
253	root	1.64	0.52 Tue Nov 6 21:36:18 CET 2001
254	root	1.58	- ported to cygwin (trivial).
255			patch by Gerrit P. Haase <gp@familiehaase.de>.
256			- small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
257
258	root	1.64	0.51 Thu Nov 1 20:39:01 CET 2001
259	root	1.54	- terminate/cancel now work properly (otherwise termination
260			could cause a "next coroutine is not and contains not..."
261			error.
262	root	1.55	- added Coro::Socket::shutdown.
263	root	1.56	- Coro::Event::loop no is the same as Event::loop.
264			- implemented terminate with args + join.
265	root	1.54
266	root	1.64	0.5 Fri Sep 28 16:15:35 CEST 2001
267	root	1.53	- fixed "print" on a Coro::Handle. The print method worked.
268	root	1.50	- small tweaks (seem to reduce memory consumption a lot)
269			in various modules.
270			- splendid use of "no warnings" scattered throughout.
271	root	1.52	- added Coro::Handle::rbuf, fixed Coro::Handle::fh.
272	root	1.48
273	root	1.47	0.49 Sun Sep 16 02:42:45 CEST 2001
274	root	1.43	- changed some method calls to function calls for speed
275			inside Coro::Handle.
276	root	1.44	- make Coro::Handle use an array instead of a hash for
277			speed reasons.
278			- IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
279			sjlj and ucontext should now work.
280			- IRIX-specific port for libcoro.
281	root	1.45	- swapped order of accept results to match IO::Socket.
282	root	1.46	- changed getsock/peername to sock/peername to match IO::Socket.
283			- fixed a bug that caused segfault when returning to main task
284			under some circumstances.
285			- other bugfixes.
286	root	1.43
287	root	1.42	0.45 Sun Sep 2 02:54:01 CEST 2001
288	root	1.36	- new method Coro::Handle::timeout.
289			- corrected speling of set...name to get...name in Coro::Socket.
290			- Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.
291			- Coro::Handle now supports fileno and FILENO.
292			- added eg/myhttpd, a web server.
293	root	1.37	- Coro::Socket now accepts numeric ports as well as "port(number)"
294			syntax.
295	root	1.38	- moved some scheduling primitives into xs code. more to come.
296	root	1.39	- new simple priority system.
297	root	1.40	- implemented Coro::Event using XS, almost four times faster!
298	root	1.41	- small memory corruption problem fixed (boy that was difficult).
299	root	1.36
300	root	1.35	0.13 Wed Aug 8 16:53:07 CEST 2001
301	root	1.31	- new method Coro::Handle::readline.
302	root	1.34	- added eg/lwp and Coro::Handle::autoflush, to make LWP work.
303			(see eg/lwp on how to make LWP non-blocking).
304	root	1.31	- renamed Coro::Socket::new_inet to new.
305	root	1.32	- added Coro::Util, some utility functions.
306	root	1.33	- die/eval now works better (still get annoying (but true ;)
307			"Callback called exit" messages).
308	root	1.34	- Coro::Handle now supports timeout, and Coro::Socket Timeout.
309			- much better Coro::Socket support.
310	root	1.31
311			0.12 Fri Jul 27 04:19:01 CEST 2001
312	root	1.29	- do not use mmap if neither MAP_ANON nor MAP_ANONYMOUS is defined.
313	root	1.34	- very experimental stack sharing algorithm. not 100% safe but
314	root	1.28	should work well in practise ;)
315	root	1.30	- added Coro::RWLock.
316	root	1.31	- Coro::Specific now works.
317	root	1.28
318			0.11 Tue Jul 24 22:49:21 CEST 2001
319	root	1.27	- added specialized hack for newer and older linux versions (fast).
320			- renamed Coro::Event::IO to Coro::Handle.
321			- new module Coro::Socket.
322
323	root	1.26	0.1 Tue Jul 24 01:47:53 CEST 2001
324	root	1.23	- release candidate 3. A rather new internal structure :(
325	root	1.24	- the great renaming: Damian Conway gave me a suitable replacement
326			for yield.
327	root	1.23	- added Coro/libcoro, a portable coroutine implementation for C
328	root	1.22	(not even perl-dependent!!!), which can be used by Coro::State.
329	root	1.20	- renamed SAVE_DEFSV (on xs-level only) to avoid symbol clash in
330			perl-5.6.
331	root	1.16	- new function Coro::Event::idle.
332			- the idle process is now overriden
333			by default in Coro::Event.
334	root	1.17	- Coro::Channel now enforces the size.
335	root	1.18	- canceling events now works in all cases.
336	root	1.19	- Coro state now include $_ and $@.
337			- yet another bug workaround that I do not really understand :(
338	root	1.21	- new module Coro::Event::IO (very undocumented) to do
339			non-blocking i/o.
340	root	1.25	- performance tuning.
341	root	1.16
342	root	1.15	0.08 Thu Jul 19 06:13:25 CEST 2001
343	root	1.14	- release candidate 2 (new functionality).
344	root	1.13	- add Coro::State::flush function.
345			- transfer now supports a flags value (mostly for speed ATM).
346			- might compile and work in the presence of threads now.
347	root	1.14	- continuations have a saner syntax.
348	root	1.19	- no more memleaks.
349	root	1.13
350	root	1.12	0.07 Tue Jul 17 17:40:18 CEST 2001
351			- release candidate 1 ;)
352			- slightly nicer code.
353			- fixed a scheduling bug in Coro::Event.
354
355	root	1.11	0.06 Tue Jul 17 04:23:24 CEST 2001
356			- ok, I found the showstopper - the same sub must not be
357	root	1.9	re-entered in two different coroutines, otherwise => crash. I
358			see no easy solution to this problem, except by walking the call
359			chaing and saving/restoring the cv's, which is what I do now.
360	root	1.11	- memory leaks still latent, especially at thread termination.
361			- Coro::Event now works (haha).
362	root	1.9
363	root	1.8	0.05 Sun Jul 15 17:32:20 CEST 2001
364			- fixed a few issues in Coro::Event.
365			- I forgot to include Coro::Event in 0.04 :(:(:(
366
367	root	1.7	0.04 Sun Jul 15 05:24:59 CEST 2001
368	root	1.5	- @_ is now properly localized.
369	root	1.4	- Coro::State is now easier subclassable.
370			- Coro::Cont now coroutine-aware.
371			- Coro::Specific is a low-overhead module to create
372			coroutine-specific vars.
373	root	1.6	- Coro::Event provides a simple interface to Event.
374	root	1.4
375	root	1.3	0.03 Fri Jul 13 14:51:52 CEST 2001
376	root	1.4	- transfer() now implemented in XS (beware).
377			- new module Coro::Cont for really faked continuations.
378			- big internal architecture changes: Coro::State is now
379	root	1.3	really low-level and can thus be used to implement other
380	root	1.4	interesting things, While "Coro::" implements a process-like
381			model. Still crude and subject to change.
382	root	1.3	- $_ and $@ are no longer being localized.
383
384	root	1.2	0.02 Tue Jul 10 01:38:17 CEST 2001
385			- implemented "async" attribute.
386			- $_ and $@ are now localized.
387			- added Coro::Channel.
388			- more testcases, still no docs.
389
390	root	1.1	0.01 Tue Jul 3 02:18:41 CEST 2001
391			- original version; copied from Convert::Scalar.
392