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Comparing Coro/Changes (file contents):
Revision 1.105 by root, Sat Aug 20 00:49:42 2005 UTC vs.
Revision 1.510 by root, Thu Jul 9 18:45:57 2009 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2
3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang's
5 actor model (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)).
7TODO: unready_all
8TODO: myhttpd header parsing
9TODO: channel->maxsize(newsize)?
10
11 - considerably speed up Coro::Select by taking avdantage
12 of AnyEvent > 4.8 and some other optimisations.
13 - someone stole my EXTRA_META!!!
14
155.151 Mon Jul 6 05:41:57 CEST 2009
16 - backport to windows process emulation code again (patch by
17 Yasuhiro MATSUMOTO).
18 - slightly update Coro::MakeMaker.
19
205.15 Tue Jun 30 10:28:06 CEST 2009
21 - deprecate Coro::Socket, document how to get ipv6 support via
22 AnyEvent::Socket instead.
23 - implement signal->wait ($cb) interface, similar to semaphores.
24 - work around SvOK not supporting getmagic, so we have to getmagic
25 to test for undef :/ (reported by Matthias Waldorf).
26 - load Coro::AnyEvent in all modules using AnyEvent.
27 - work around perl corrupting our internal data structures,
28 reported by Tokuhiro Matsuno.
29 - enable per-coroutine real and cpu time gathering
30 (Coro::State::enable_times).
31
325.14 Wed Jun 24 01:37:48 CEST 2009
33 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
34 as this seems to have been a difficult concept (poll, sleep, idle,
35 idle_upto).
36 - add Coro::AnyEvent::readable/writable functions.
37 - clarify Coro::EV/Event/AnyEvent manpages.
38 - free per-thread global scalars in the thread calling ->cancel, to
39 avoid crashes when $_, $@ etc., are magical but some of those
40 had already been freed.
41 - "unexperimentalise" the callback interface for Coro::Semaphore.
42 - speed up ready queue management/context switching by using a linked
43 list instead of an array (~5-10%).
44 - implement "watch" command in Coro::Debug shells.
45 - for fun, implement time-slicing as an example in the manpage.
46 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
47 Coro::Event, use the normal AnyEvent handling instead of dieing
48 (the same is true for Coro::Handle).
49 - properly document Coro::EV::timed_io_once.
50 - avoid unneccessary ->cancel calls in Coro::Handle.
51 - maybe make it work on mingw32 with win32 backend
52 (based on patch by Yasuhiro Matsumoto).
53
545.132 Fri May 29 09:00:39 CEST 2009
55 - do not keep a reference to the argument itself in
56 Coro::Semaphore::guard, as it could change later.
57 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
58 should support a prepare callback.
59
605.131 Mon Mar 16 23:20:37 CET 2009
61 - implement and document Coro->suspend, Coro->resume.
62 - fix Coro::Select implementation to not (often) close
63 the passed file descriptors (testcase provided by pippijn).
64
655.13 Mon Dec 15 21:51:42 CET 2008
66 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
67 - don't set diehook to C<undef> but instead to NULL, to avoid
68 spurious warnings.
69 - fix a lot of bugs in Coro::SemaphoreSet.
70 - Coro::SemaphoreSet will less often create a semaphore needlessly.
71 - add Coro::SemaphoreSet::count and wait methods.
72 - take advantage of the new Guard module.
73 - deprecate Coro::guard.
74 - try to fix the dreaded 01_unblock tests once more. I hate it when
75 testsuites need more fixing than the code they are supposed to test.
76 - croak in more cases when a required callback isn't resolvable.
77 - fix some minor issues in Coro::State->call/eval.
78 - use current coroutine context instead of a temporary one
79 when temporarily switching to another coroutine.
80 - do not call C-level on_destroy handlers during global destruction,
81 to avoid needless segfaults.
82
835.12 Sun Dec 7 13:30:38 CET 2008
84 - add default config for MirOS, which seems to be a bug-to-bug
85 compatible fork of openbsd ("world domination by releasing
86 openbsd cvs before the openbsd folks do it" or so :).
87 - free_padlist did destroy the names pad, not good, but didn't
88 seem to bother perl - this could fix issues such as eval ""
89 inside a function called from multiple coroutines.
90 - use a different method to detect destruction time.
91 - be more careful when freeing padlists just before global
92 destruction.
93 - fixed and expanded the call/cc example.
94 - renamed _terminate to _coro_run.
95 - new method Coro::Channel->shutdown.
96 - try pthreads on openbsd <4.4 (broken sigaltstack, will
97 pthreads fare better?).
98 - be less picky about destroying "a" running coroutine.
99
1005.11 Tue Nov 25 21:49:05 CET 2008
101 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
102 working code with failed assertions, introducing more bugs than
103 it fixes, requiring elaborate workarounds :(
104
1055.1 Mon Nov 24 08:54:59 CET 2008
106 - wrote a small introductory tutorial - Coro::Intro.
107 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
108 - Coro::Select did errornously dup the file descriptors
109 and didn't work with all AnyEvent backends.
110 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
111 LWP data transfers.
112 - disassociate c contexts from coro objects - this is agruably more
113 correct, but mostly allows sharing of cctxs between coro and state
114 objects, for added memory savings and speed increases.
115 - bumped $Coro::POOL_RSS up to 32kb by default.
116 - no longer set the optype to OP_CUSTOM, as B::* understandably
117 doesn't like this very much (and we *are* a type of entersub).
118 - implement state cloning, just to prove that call/cc can be done.
119 - automatically load Coro::AnyEvent in Coro::Handle.
120 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
121 do not have this method (and don't need it either).
122 - speed up generic anyevent methods in Coro::Handle by using rouse
123 callbacks.
124 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
125 others. It also makes the debugger happier, as you can trace
126 through the idle threads now.
127 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
128 - eg/event was pretty broken.
129 - better 5.8.6 compatibility.
130
1315.0 Thu Nov 20 10:35:05 CET 2008
132 - NEW ARCHITECTURE: use the latest 4.x version if you experience
133 stability issues.
134 - bump API version to 7 - all dependents must be recompiled.
135 - removed timed_* functions - they were not being used anyways
136 and should be replaced by a more generic mechanism -
137 and were annoying to support anyways :)
138 - removed SemaphoreSet's waiter method - use sem method instead.
139 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
140 - async_pool did free a scalar value twice
141 ("Attempt to unreference...").
142 - fix a longstanding bug where calling terminate on a coro that
143 was waiting for a semaphore that was just becoming available
144 would cause a deadlock (semaphore would get into a state where
145 it was available but waiters were still blocked).
146 - calling throw on a coroutine that is waiting for a semaphore will
147 no longer make it acquire the semaphore (and thus leak a count).
148 - perl's process emulation is now not even theoretically supported
149 anymore.
150 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
151 conversion of callback-style to blocking-style.
152 - new methods $coro->schedule_to and ->cede_to, to specifically
153 schedule or cede to a specific coroutine.
154 - new function Coro::Semaphore::wait.
155 - use named constants in Coro::Channel (Richard Hundt).
156 - directly patch the entersub opcode calling SLF functions (cede,
157 transfer and so on). this does speed up context switching, but
158 more importanly, it frees us from the hardcoded behaviour of
159 entersub, so we might actually be able to return something from
160 those functions and atcually create new ones.
161 - take advantage of __builtin_frame_address on gcc.
162 - expose THX in coroapi (not sure whether this was a wise decision,
163 as "threaded" perls are running at half speed anyways).
164 - implement execute_slf (schedule-like-function) interface that makes
165 it possible to implement schedule-like-functions in XS.
166 - use new SLF interface to massively speed up Coro::EV by roughly a
167 factor of two.
168 - used new SLF interface to massively speed up Coro::Semaphore by a
169 factor of three.
170 - used new SLF interface to speed up Coro::AIO by roughly a factor of
171 four and reduce its memory usage considerably.
172 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
173 for a nice speedup and vastly more correct behaviour. Also implement
174 a new method "sem" to get at the underlying semaphore object.
175 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
176 (in comparison) 20-40% speedup.
177 - used new SLF interface to reimplement Coro::Signal gaining
178 some unknown (because I was too lazy), but certain, speedup, and also
179 making signals reliable for the first time.
180 - used new SLF interface and other optimisations to speed up async_pool
181 by a factor of two. It also doesn't rely on perl's exception mechanism
182 to exit anymore. The overhead for terminating an async_pool, coro over
183 a normal async is now very small.
184 - sped up coroutine creation/destruction by 40%.
185 - forgot to include Coro/libcoro/README in the dist for all these years.
186 - work around a freebsd pthreads bug (manual testcancel is required as
187 pthread_cond_wait isn't a cancellation point on freebsd).
188 - use new rouse functions to speed up and simplify Coro::BDB.
189 - make "prefer perl native functions" work with threaded perls.
190 - condense Coro::Debug ps output, hint at v and w flags.
191 - (libcoro) lots of minor cleanups and portability improvements.
192
1934.914 Wed Nov 19 12:54:18 CET 2008
194 - fix a disastrous bug in the readline optimisation
195 introduced in 4.801.
196
1974.913 Sat Nov 15 07:58:28 CET 2008
198 - async_pool did free a scalar value twice
199 ("Attempt to unreference...").
200
2014.912 Thu Nov 13 18:31:23 CET 2008
202 - minor cleanups.
203 - use much larger stacks on linux and perl < 5.8.8.
204 - Coro::Debug::new_unix_server did not unlink the socket
205 when destroyed.
206
2074.911 Tue Nov 11 04:26:17 CET 2008
208 - "port" to threaded perls.
209
2104.91 Mon Nov 10 05:36:38 CET 2008
211 - the ->throw exception object no longer leaks.
212 - creating a new cctx leaked a scopestack entry (memleak).
213 - new coroutines didn't get created with a zero flags field
214 (unknown impact).
215 - calling ->throw on a not-yet-started coroutine should now work
216 instead of being ignored.
217 - ->throw is now supported on Coro::State objects.
218 - clean up cctx creation code a bit.
219 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
220
2214.9 Sat Nov 8 17:45:27 CET 2008
222 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
223 - (libcoro) no longer leak threads in the experimental pthread backend,
224 also speed it up considerably.
225 - (libcoro) do not rely on makecontext passing void *'s unscathed.
226 - fix compiletime dependencies on libcoro in the Makefile.
227 - cctx_count wasn't always updated properly.
228 - Coro::State::cctx_stacksize wasn't applied correctly.
229 - new function Coro::State::cctx_max_idle.
230 - the default max number of idle C contexts is now 4.
231 - (libcoro) try harder to get _setjmp/_longjmp.
232 - (libcoro) cleanup and extend the libcoro API to officially
233 allow the creation of empty source contexts.
234 - very experimental workaround for the totally broken netbsd platform.
235 - tried to hack around openbsd bugs.
236
2374.804 Wed Nov 5 16:36:00 CET 2008
238 - Coro::Debug::new_unix_server would not create a non-blocking listening
239 socket, sometimes causing freezes.
240 - (libcoro) fix misaligned stack points for setjmp and assembly
241 methods, which can cause crashes on x86/x86_64 with a sufficiently
242 aggressive compiler.
243 - new function: Coro::Debug::new_tcp_server.
244 - move ->throw into the Coro class because it only works on coro objects.
245
2464.803 Mon Nov 3 17:16:12 CET 2008
247 - (libcoro) use a global asm statement to become independent of gcc
248 otpimisations for CORO_ASM (thanks to pippijn for the idea).
249 - try to workaround yet another broken bsd, this time dragonfly.
250
2514.802 Thu Oct 30 10:56:12 CET 2008
252 - support -fno-omit-frame-pointer on x86 with the assembly method.
253 - tune 01_unblock.t tests a bit.
254
2554.801 Wed Oct 22 18:33:37 CEST 2008
256 - improve readline speed for very long "lines".
257 - backport to 5.8.8.
258
2594.8 Thu Oct 2 13:34:40 CEST 2008
260 - new function Coro::AIO::aio_wait.
261 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
262 - greatly speed up and reduce memory usage of Coro::AIO requests.
263 - implement some other µ-optimisations.
264
2654.749 Mon Sep 29 14:40:12 CEST 2008
266 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
267
2684.748 Sat Sep 27 14:03:19 CEST 2008
269 - implement, but do not document, PerlIO::cede(granularity).
270 - Coro::Storable forgot to wrap Storable::pstore.
271 - work around the multitude of leaks and memory corruption
272 bugs in PerlIO::via by using our own C-level perliol. As a side
273 effect, Coro::Storable is now much, much, much faster.
274
2754.747 Tue Sep 23 01:59:41 CEST 2008
276 - fix a per-cv memleak (one empty array was leaked per
277 code reference).
278 - avoid a crash in coro->call|rss when the coroutine was already
279 destroyed (most noticably when using Coro::Debug::ps :)
280 - also protect *Storable::FILE.
281 - push up default storable granularity to 20ms.
282
2834.746 Sun Sep 21 03:22:20 CEST 2008
284 - be more insistent on locking Storable against reentrancy
285 in Coro::Storable.
286 - move swap_def?v and throw to Coro::State, as documented.
287
2884.745 Thu Jul 24 00:14:38 CEST 2008
289 - remove debugging code related to MgPV_nolen_const, also try to
290 make it compile with perl 5.8.6 (yes, apple apparently loves
291 outdated software). Reported by John S.
292
2934.744 Tue Jul 8 22:06:35 CEST 2008
294 - correctly provide default DIE/WARN handlers as documented.
295 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
296 implementations inside perl work fine for us.
297
2984.743 Mon Jun 16 00:21:57 CEST 2008
299 - when using Coro::EV without running EV::loop it could
300 result in busy-waiting for events, this has been fixed.
301 - reduce codesize and improve performance by using EV_DEFAULT_UC.
302
3034.742 Sat May 31 14:10:21 CEST 2008
304 - implement a workaround for (some) perl <5.8.8 versions.
305 - require EV 3.3+.
306
3074.741 Fri May 30 23:33:09 CEST 2008
308 - tell netbsd how utterly broken their imitation of an OS is
309 and refuse to build by default if pthreads are in use.
310 - switch to "s" method on all bsd's by default, as their ucontext
311 stuff seems just too broken.
312 - fix a bug in Coro::Select.
313
3144.74 Thu May 29 20:05:31 CEST 2008
315 - do not test Coro::LWP for lack of dependencies.
316 - do not test Coro::Select for lack of working perls.
317
3184.73 Thu May 29 2008
319 - fix a bug in Coro::EV which would cause it to block despite
320 there being runnable coroutines.
321 - sprinkle "no warnings" freely over everything, also suppress
322 warnings for some other modules.
323 - fix typo in WSAEWOULDBLOCK.
324
3254.72 Sun May 25 05:14:36 CEST 2008
326 - tweak META.yaml a bit, unfortunately, there is no documented way
327 to have optional dependencies with CPAN. doh :(
328 - avoid running some tests on windows because they would fail due to
329 perl bug (broken fork, broken pipes...).
330 - work around perl on windows bugs where perl returns undocumented
331 error codes for sysread, syswrite etc. by taking advantage
332 of AnyEvent's workaround for that problem.
333 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
334 a common perl implementation bug on windows.
335 - use unix domain sockets in testsuite to work around
336 common perl implementation bugs on widows (they are emulated by
337 tcp sockets on windows. ugh.)
338
3394.71 Sat May 24 20:01:27 CEST 2008
340 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
341 - take advantage of async name resolution of AnyEvent::Util.
342 - work around brutal inet_aton override in Coro::LWP.
343 - take advantage of the readyhook in Coro::EV, for smoother
344 scheduling.
345
3464.7 Sun May 11 00:32:19 CEST 2008
347 - completely reworked the Coro manpage.
348 - added Coro::AnyEvent, generic event loop integration.
349 - implement cancel, ready and kill commands in Coro::Debug.
350 - document find_coro in Coro::Debug.
351 - incompatible change: rename has_stack to has_cctx.
352 - Coro::AIO and Coro::BDB no longer force event model detection,
353 use AnyEvent::AIO and AnyEvent::BDB.
354
3554.6 Sat Apr 26 10:05:14 CEST 2008
356 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
357 by the Coro module. It was a mistake to have it in the first place.
358 - (experimental) support for activestate perl 5.10 (method "w").
359 - (experimental) support for strawberry perl (method "a").
360 - coro_sigelem_set did not return a value although it had to,
361 actual impact unknown.
362
3634.51 Mon Apr 14 13:28:27 CEST 2008
364 - make it compile again on 5.8.
365
3664.50 Thu Apr 10 09:43:17 CEST 2008
367 - I did it twice! (see 4.49).
368
3694.49 Sun Apr 6 21:23:31 CEST 2008
370 - grr, instead of compiling the recent changes on 5.10 only they
371 were compiled on 5.8 only.
372
3734.48 Sun Apr 6 20:36:46 CEST 2008
374 - allow coroutine switches during eval's under 5.10.x, as it seems
375 the parser is a per-interpreter option now, so this is safe
376 (this might fix the odd crashing bug).
377 - drop support for 5.9.x versions: they are dead, jim.
378
3794.47 Sun Apr 6 00:37:52 CEST 2008
380 - force cctx allocation on API calls: we know we need to force one
381 and gcc actually manages to confuse our heuristic nowadays,
382 leading to crashes and worse.
383 - document force_cctx.
384
3854.46 Fri Apr 4 22:05:43 CEST 2008
386 - upgrade libcoro, resulting in pthread-backend (which was only created
387 to fulfill the rules of the programming languages shootout).
388
3894.45 Thu Mar 13 11:55:36 CET 2008
390 - fix a file leaking bug in eg/mhyttpd that would allow
391 downloading of any file (reported by oesi).
392 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
393 (also add testcase).
394 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
395 apparently having loads of fun with that).
396 - implement $state->swap_defsv, ->swap_defav and document ->throw.
397
3984.4 Wed Feb 13 16:44:29 CET 2008
399 - only assume .cfi pseudo isns exist on GNU/Linux.
400 - add get_timed method to Coro::Channels.
401 - fixed Coro::Debug manpage.
402 - perl 5.11 compatbility improvement based on patch by
403 Andreas König.
404
4054.37 Sun Jan 20 11:25:23 CET 2008
406 - soften the check for an active parser for perl 5.10 (avoiding
407 "Coro::State::transfer called while parsing" in many cases).
408
4094.36 Sun Jan 13 10:53:56 CET 2008
410 - reset diehook when terminating from an async_pool as to not
411 trigger any __DIE__ handlers.
412
4134.35 Sun Jan 13 04:14:13 CET 2008
414 - "bt" debug command now displays any exceptions
415 from longmess and also skips the innermost
416 stackframes, giving more useufl output.
417 - allow backtraces in coroutines blocked in Coro::EV,
418 at a <1% speed hit.
419 - handle localising of $SIG{__WARN__} and __DIE__
420 properly (with a proper amount of dirty hacking).
421
4224.34 Sat Dec 22 17:49:53 CET 2007
423 - upgrade to EV version 2.0 API.
424
4254.33 Mon Dec 17 08:36:12 CET 2007
426 - make Coro::AIO etc. loadable in the absence of EV.
427
4284.32 Mon Dec 17 07:46:02 CET 2007
429 - majorly improved Coro::Handle's performance with Coro::EV.
430 - implemented the until now mythical Coro::BDB module.
431 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
432
4334.31 Wed Dec 5 12:32:39 CET 2007
434 - remove warn statement form Coro::Util.
435
4364.3 Tue Dec 4 20:33:14 CET 2007
437 - calls to the idle function could cause stack corruption
438 when the stack changed.
439 - do no longer rely on the presence of EV::DNS if EV is used
440 (because it is gone), but instead take avdantage of EV::ADNS
441 if available.
442 - add ($) prototypes to all functions in Coro::Storable.
443 - use a conventional (safer) idle callback in Coro::EV.
444 - do accept quickly in Coro::Debug to avoid endless loops.
445
4464.22 Fri Nov 30 16:04:04 CET 2007
447 - really use optimised versions for Event and EV in Coro::Util
448 and Coro::Handle.
449
4504.21 Sun Nov 25 10:48:59 CET 2007
451 - fix a spurious memory read.
452 - Coro::EV no longer keeps the eventloop "alive".
453
4544.2 Fri Nov 9 20:47:05 CET 2007
455 - enable/disable tracing from a new coroutine, not a pooled one.
456 - fix a memleak in Coro::Event.
457 - removed killall call from fork_eval.
458 - made sure store_fd is already loaded so that fork_eval
459 does not have to parse autoload in each subprocess.
460 - only use assembly method if -O switch is in $Config{optimize}.
461 - add (optional) Coro::EV module, so far the best event loop module
462 directly supported by Coro.
463 - if the event model is EV, use EV::DNS to resolve
464 stuff in Coro::Util.
465 - don't get confused by multiple event notifications in Coro::Handle.
466 - initial support for EV (libevent interface).
467 - require Event and EV using configure_requires, to force their existance.
468
4694.13 Wed Oct 24 07:26:45 CEST 2007
470 - add Coro::Storable::blocking_thaw.
471 - use a vastly more complicated technique to localise
472 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
473 - use a coroutine for the idle callback Coro::Event,
474 instead of running Event in the current coroutine context.
475 This also catches recursive invocations.
476 - actually report fork errors in gethostbyname and inet_aton.
477
4784.11 Thu Oct 11 02:40:24 CEST 2007
479 - port to threaded perls.
480
4814.1 Thu Oct 11 02:38:16 CEST 2007
482 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
483 be local to each coro (see Coro::State).
484 - incompatible change: for very deep reasons, cede and cede_notself
485 cannot return anything, so nothing will be returned.
486 - possibly bring back 5.10 compatibility (untested).
487 - work around stupid (and wrong) warning on 5.10 :(.
488 - overlay the saved state over the context stack. This saves
489 a few hundred bytes per coroutine on average and also
490 speeds up context switching a bit.
491 - further tune default stack sizes.
492 - (more) correctly calculate stack usage in coro_rss.
493 - Coro::Storable::blocking_* did not properly lock
494 resulting in races between coroutines.
495 - added Coro::Storable::guard.
496 - stopping to trace a coroutine could destroy the cctx of
497 an unrelated coroutine.
498 - explain the relationship between Perl and C coroutines in
499 more detail in Coro::State.
500 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
501 causing a fork per resolve. This also affected Coro::Socket.
502 - switch to a separate stack in $coro->call/eval to avoid
503 invalidating pointers.
504
5054.03 Sat Oct 6 21:24:00 CEST 2007
506 - added Coro::throw method.
507 - minor code cleanups.
508
5094.02 Sat Oct 6 02:36:47 CEST 2007
510 - fix a very minor per-coroutine memleak (a single codereference).
511 - fixed a bug where the currently in-use c context would be freed
512 prematurely (can happen only when programs change the stacksize
513 or use tracing).
514 - tracing can no longer keep a coro alive after it terminated.
515 - do static branch prediction in the common path for gcc. gives
516 about 2-5% speed improvement here.
517
5184.01 Fri Oct 5 22:10:49 CEST 2007
519 - instead of recreating *a* standard output handle we simply
520 use STDOUT, which is faster and hopefully more robust.
521
5224.0 Fri Oct 5 12:56:00 CEST 2007
523 - incompatibly changed Coro::Storable::freeze.
524 - major new feature: added Coro::Debug, for interactive coroutine
525 debugging, tracing and much more.
526 - major bug fix: unbelievable, but true: $_, $/ and many other
527 "saved" variables actually weren't being saved. This has been fixed,
528 of course, while increasing performance while losing all the save
529 flags.
530 - save flags are gone, and all the api functions dealing with them.
531 - added Coro::Semaphore::adjust.
532 - added Coro::Util::fork_eval.
533 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
534 - added Coro::killall.
535 - reduce initial stack sizes to allow for "micro-coroutines".
536 - better async_pool resource management, moved parts of async_pool
537 handling to XS (major speed improvement).
538 - actually croak before modifying important data structures.
539 - refuse to transfer while compiling.
540 - possibly support eval EXPR better now.
541 - enable assembly per default on linux+bsd x86+amd64.
542 - all internal members were renamed _something for easier subclassing.
543 - many minor tweaks.
544
5453.63 Wed May 16 14:10:06 CEST 2007
546 - implement handcoded assembly for x86/amd64 SVR ABI.
547
5483.62 Fri Apr 27 21:36:06 CEST 2007
549 - upgrade libcoro (which might set unwind info correctly).
550 - change default on linux to setjmp/longjmp.
551
5523.61 Thu Apr 19 12:36:18 CEST 2007
553 - Coro::Storable caused an endless loop when thawing invalid
554 pst's sometimes.
555 - use a Semaphore in Coro::Storable, as Storable doesn't
556 seem to be reentrant (although it is documented to
557 be threadsafe...).
558 - fix Coro::Signal to bring back the original unreliable
559 but stateful semantics.
560 - fixed a lot of typos in Coro.pm (patch submitted by David
561 Steinbrunner, which applied flawlessly).
562
5633.6 Sat Apr 14 17:13:31 CEST 2007
564 - added some bugfixes to get eg/myhttpd working again.
565 - added Coro::Storable for often-cede'ing freeze/thaw.
566 - try to do a clean exit when a coroutine calls exit
567 (EXPERIMENTAL).
568 - got rid of indirect call through _coro_init.
569 - updated the partly antique examples in eg/ to
570 work again and be a bit less magic, too.
571 - fixed Coro::Signal semantics to work as documented again.
572
5733.55 Sun Mar 25 01:20:47 CET 2007
574 - add SAVE_DEFFH to save the default filehandle and enable
575 it by default.
576 - finally move socket-operations from Coro::Socket to Coro::Handle
577 to be able to unblock foreign sockets.
578 - add Coro::State::save_also and guarded_save.
579 - add count accessor to Coro::Semaphore.
580 - add Coro::State::cctx_stacksize.
581 - just for the fun of it, do not rely on implicit context,
582 which can dramatically improve performance, but people
583 using windows-process-emulation perls do not care much about
584 performance.
585
5863.51 Sun Mar 4 14:18:04 CET 2007
587 - fixed a problem when you weakened references to Coro::State's
588 (patch by Yuval Kogman).
589
5903.501 Wed Feb 28 12:44:07 CET 2007
591 - rename some global symbols as macosx from hell redefines
592 them without asking.
593
5943.5 Tue Feb 13 20:22:53 CET 2007
595 - do AnyEvent model detection earlier, avoiding problems
596 caused by first using AnyEvent and later Coro::Event.
597 - implement and document Coro::Event event objects.
598 - fix a potential problem in Coro::Event causing crashes.
599 - initialise PL_comppad when creating a new coroutine,
600 avoids crashes on early coro destruction.
601
6023.41 Mon Jan 22 19:19:49 CET 2007
603 - readline on Coro::Handle did not support undefined $/,
604 nor did it deliver partial lines on EOF or error.
605 - implement malloc fallback for stack allocation because
606 stupid broken idiotic OSX has a stupid broken
607 idiotic fits-the-whole-os mmap "implementation" and
608 my dick feels longer if Coro is portable even to
609 obsolete platforms.
610
6113.4 Fri Jan 19 21:52:54 CET 2007
612 - remove t/09_timer.t, as it isn't really testing much
613 but was rather flaky in practise.
614 - async_pool coro would keep arguments and callback alive until
615 it was reused.
616 - cancellation of a coroutine could cause spurious idle calls
617 in cede_notself.
618
6193.3 Sat Jan 6 03:45:00 CET 2007
620 - implement $coro->on_destroy.
621 - Coro::Event blocking semantics have been changed,
622 documented and - hopefully - improved.
623 - fix nice adding, not subtracting, from priority.
624 - fix ->prio and api_is_ready (patch by Mark Hinds).
625 - fixed an assert ("... == prev__cctx->idle_te")
626 that could errronously trigger.
627 - fix various large and small memleaks.
628 - use a (hopefully) more stable cancel implementation
629 that immediately frees the coroutine data.
630 - cede/cede_notself return a status now.
631 - added Coro::guard function.
632 - added a global coroutine pool for jobs (on my machine,
633 I can create and execute 48k simple coros/s with async,
634 and 128k coros with async_pool).
635 - Coro::AIO now uses the coroutine priority as io priority.
636
6373.2 Fri Dec 22 05:07:09 CET 2006
638 - improve portability to slightly older perls.
639 - use cleaner coroutine destruction.
640 - simplify configuration for users.
641 - optionally (unrecommended) prefer perl functions over
642 their coro replacements.
643
6443.11 Tue Dec 5 13:11:24 CET 2006
645 - fixed some bogus assert's, but as perl.h disables assert even
646 without NDEBUG (thank you very much), not too many people should
647 notice (that did include myself). Andreas König noticed, though :)
648 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
649 it. Also noticed by Andreas König :)
650 - save/restore tainted status.
651 - verified to pass the testsuite on my 5.9.5.
652
6533.1 Mon Dec 4 23:03:40 CET 2006
654 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
655 - incompatible change: transfer flags are now per-state.
656 - give a better error message on deadlock.
657 - document Coro::nready.
658 - enhanced testsuite.
659
6603.01 Sun Dec 3 23:47:42 CET 2006
661 - forgot to include Coro::Timer.
662
6633.0 Sun Dec 3 22:57:25 CET 2006
664 - the "FINALLY COMPLETELY STABLE" release (coming soon:
665 the "FAMOUS LAST WORDS" release).
666 - implement a new stack sharing algorithm, which uses a stack
667 pool (size currently hardcoded).
668 - make stack sharing mandatory (it no longer uses a heuristic).
669 - eval/die no longer cause weird problems under heavy use.
670 - Coro::Event could cause livelocks if it was used but
671 no Coro::Event watchers were used.
672 - Coro::Event now uses asynccheck as prepare does not
673 check for changed watchers.
674 - Coro::Event allows multiple waiting coros and will wake up one
675 per event.
676 - Coro::Event should be cleaner and more efficient now.
677 - new utility function Coro::unblock_sub.
678 - document the sad fact that Event is no longer reentrant.
679 - putting a coroutine into the ready queue twice could under
680 some circumstances lead to stack corruption.
681 - minor incompatibility: subclassing Coro::State is supported
682 directly now without going through a _coro_state member.
683 - state/coro switching is much faster now.
684 - very minor optimisations and code/documentation cleanup.
685 - avoid problems due to compiler inlining.
686 - removed timers from Coro::Timer -> use AnyEvent instead.
687 - replaced Coro::idle coroutine by (cleaner) idle handler.
688 - updated to newest libcoro.
689 - implement enhanced support for valgrind.
690 - implement is_ready and return value for ready.
691 - removed Coro::Cont, it was a misnomer (it's generators),
692 and it was somewhat annoying to get it right. Will come back
693 if somebody asks for it :)
694 - many ->wait methods and Coro::Event could return
695 spuriously without the event having happened.
696
6972.5 Tue Nov 7 12:22:33 CET 2006
698 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
699 use AnyEvent, moved them to Coro/.
700 - added Coro::LWP which contains all the uglyness required to
701 make LWP non-blocking.
702 - should work with perl 5.9.x now (Andreas König made me do it).
703 - fixed another bug in Coro::Select when the timeout was undef.
704 - reuse PL_start_env for all coros, saves some memory per coroutine.
705 - manage PL_top_env differently, hopefully to avoid panic: top_env.
706 - timeout argument was not properly used in Coro::Socket.
707 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
708 - emulate undocumented(!) functionality of IO::Socket required
709 by LWP(!!).
710 - updated eg/lwp to work with newer lwp's.
711 - remove "FATAL: uncaught exception" prefix. Coroutines that die
712 kill the whole process, just as exceptions in the main "coroutine"
713 did already.
714
7152.1 Wed Nov 1 23:01:13 CET 2006
716 - fix a long-standing bug in Coro::Select where select with
717 zero timeout would instead change the current default filehandle.
718 - use a simpler and hopefully more robust way to clone padlists
719 (uses less memory and a perl function instead of our own).
720 - coro can now create a stack guard area on many architectures.
721 - Coro::AIO properly reexports additional functions from IO::AIO.
722 - updated libcoro with a workaround for OS X,
723 pach and testing by Michael Schwern.
724
7252.0 Tue Oct 24 05:47:17 CEST 2006
726 - support additional aio requests in Coro::AIO.
727
7281.9 (never properly released due to a glitch)
729
7301.8 Thu Feb 2 00:59:06 CET 2006
731 - applied suggested patch by SAMV to avoid problems during stupid
732 mark & sweep gc run.
733 - applied patch by Scott Walters for 5.9.3 compatibility.
734
7351.7 Tue Dec 27 01:41:58 CET 2005
736 - added Coro::AIO, a thin wrapper around IO::AIO.
737 - improved Makefile.PL explanations.
738
7391.6 Mon Dec 12 21:30:05 CET 2005
740 - additionally save PM_curpm might fix as-of-yet
741 unseen problems with regex matches being attributed to the
742 wrong package.
743 - add t/10_bugs.t, which currently checks against imho broken
744 perls that use 0.26MB of stack space per Perl_magic_get
745 invocation (newer linuxes) as opposed to the 0.0002MB perl
746 normally uses.
747 - make stacksize configurable for the ultimate debian experience.
748
7491.51 Mon Dec 12 18:48:36 CET 2005
750 - remove debugging warn() accidentally left in Coro::Select.
751
7521.5 Tue Nov 29 13:32:44 CET 2005
753 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
754 - fix Coro::Select 'select'.
755 - strict'ify some modules.
756 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
757 - use XSLoader in selected modules.
758 - remove some 5.6 compatibility cruft.
759
7601.4 Tue Sep 6 00:11:05 CEST 2005
761 - libcoro did not take into account the trampoline on amd64,
762 when 'l'inux method was used.
763
7641.31 Tue Aug 30 23:31:33 CEST 2005
765 - some portability fixes/workarounds.
766
7671.3 Sat Aug 20 03:08:56 CEST 2005
768 - no code changes. module seems to work fine.
769 - improve Coro::State docs, remove reference to nonexisting
770 Coro::State::flush method.
771 - no longer autodetect windows, present it as an option instead.
2 772
31.2 Mon May 16 02:00:55 CEST 2005 7731.2 Mon May 16 02:00:55 CEST 2005
4 - included libcoro.c earlier in State.xs, might improve portability. 774 - included libcoro.c earlier in State.xs, might improve portability.
5 - use a faster and possibly more stable Coro::Cont implementation. 775 - use a faster and possibly more stable Coro::Cont implementation.
6 - accept x86_64 in addition to amd64 for optimized linux-amd64 support. 776 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
101.11 Thu Mar 3 18:00:52 CET 2005 7801.11 Thu Mar 3 18:00:52 CET 2005
11 - change of contact address. 781 - change of contact address.
12 782
131.1 Tue Feb 22 20:51:16 CET 2005 7831.1 Tue Feb 22 20:51:16 CET 2005
14 - support [l]inux method on amd64. 784 - support [l]inux method on amd64.
15 - make some context switches while compiling/eval'ing work. 785 - allow some context switches while compiling/eval'ing.
16 786
171.0 Tue Aug 10 03:47:27 CEST 2004 7871.0 Tue Aug 10 03:47:27 CEST 2004
18 - Event 0.89 fixes the bug again. 788 - Event 0.89 fixes the bug again.
19 - fix the remaining(??) memleak. I didn't free the cache-AV for 789 - fix the remaining(??) memleak. I didn't free the cache-AV for
20 padlists, so one AV per created anon-sub leaked. 790 padlists, so one AV per created anon-sub leaked.

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