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Comparing Coro/Changes (file contents):
Revision 1.71 by root, Thu Nov 21 13:08:05 2002 UTC vs.
Revision 1.578 by root, Wed Jul 13 02:36:01 2011 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2
3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: channel->maxsize(newsize)?
5TODO: http://www.microsoft.com/msj/archive/s2ce.aspx
6
76.02 Wed Jul 13 04:35:19 CEST 2011
8 - "improve portability to Gentoo" - gentoo manages to put perl variables
9 in memory areas that are farther than 2gb apart, which the jit couldn't
10 handle and barfed. now it's just a bit slower on gentoo and similar
11 systems.
12
136.01 Sun Jul 3 12:31:14 CEST 2011
14 - workarounds are good, but the test for whether pthreads are used
15 was not good. thisone should be better.
16 - check differently whether gcc generates cfi instructions itself.
17
186.0 Wed Jun 29 19:43:35 CEST 2011
19 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
20 destroyed and cleaned up automatically (e.g. async { schedule }).
21 - implement a JIT compiler for part of the thread switch code,
22 which gives a 50% speed improvement on threaded perls, and
23 about 4% on non-thraeded perls (so threaded perls now finally
24 reach about half the speed of non-threaded perls).
25 - slightly modernise Coro::Intro, add section about rouse functions.
26 - avoid DEFSV and ERRSV, giving another 10% improvement
27 in thread switching.
28 - Coro::State->is_destroyed is now called is_zombie.
29 - implement a Coro->safe_cancel method that might fail, but
30 cancels in a "safer" way if it succeeds.
31 - add preliminary support for DEBUGGING perls.
32 - get rid of two hash-accesses when initialising a new Coro - this
33 speeds up coro creation by almost a factor of two.
34 - croak when a coro that is being cancelled tries to block
35 (e.g. while executing a guard block), instead of crashing or
36 deadlocking.
37 - use a more robust and also faster method to identify Coro::State
38 objects - speeds up everything a bit.
39 - implement Coro->cancel in XS for a 20% speed improvement, and to
40 be able to implement mutual cancellation.
41 - speed up context switches by a percent or two by more efficiently
42 allocating context stack entries.
43 - implement Coro->join and Coro->on_destroy in XS for a speedup and
44 a reduction in memory use.
45 - cancelling a coro while it itself is cancelling another coro is
46 now supported and working, instead of triggering an assertion.
47 - be a bit more crash-resistant when calling (buggy) on_destroy
48 callbacks (best effort).
49 - move on_destroy into the slf_frame, to allow extension slf
50 functions to have destructors.
51 - get rid if coro refcounting - simply crash in other interpreter
52 threads by nulling the pointers on clone.
53 - simplify warn/die hook handling when loading Coro - the convoluted
54 logic seems to be no longer neccessary.
55 - use libecb instead of our own home-grown gcc hacks.
56 - document alternatives to Coro::LWP. Please use them :)
57 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
58 sigaltstack. Really. wine suffers from it, erlang suffers from it,
59 and it's known since at least 2006.
60
615.372 Wed Feb 23 06:14:30 CET 2011
62 - apparently mingw doesn't provide a working gettimeofday, try to
63 work around that by relying on Time::HiRes (indirectly brought to
64 my attention by Max Maischein).
65 - fix some portability issues when Time::HiRes was used.
66
675.371 Mon Feb 21 14:36:08 CET 2011
68 - backport to windows process emulation code again.
69
705.37 Sat Feb 19 07:49:44 CET 2011
71 - add a big "Coro thread life cycle" section to "man Coro".
72 - try a tentative workaround against the breakage that 5.13 has
73 introduced without depreciation period. sigh.
74 - no longer use Time::HiRes if gettimeofday is available, which
75 saves quite a lot of memory.
76
775.36 Sun Feb 13 05:33:41 CET 2011
78 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
79 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
80 method call.
81 - undocument Coro::Timer::sleep and obsolete whole module.
82 - optimise Coro::Timer::timeout memory and cpu usage.
83 - slightly updated Coro::Intro for recent changes.
84 - do not initialise PL_dirty anymore.
85
865.25 Thu Nov 11 01:08:39 CET 2010
87 - try a different approach on netbsd - netbsd 5 finally has marginally
88 working pthreads, but still broken ucontext/sigaltstack.
89 - openbsd 4.8 finally got their act together, Coro works out of the box
90 with asm, setjmp and pthreads (no change, just informational).
91
925.24 Sat Oct 23 11:27:12 CEST 2010
93 - port to the EV 4.0 API.
94 - work around bugs in mingw32, making strawberry perl work
95 out of the box.
96 - correctly modify Coro::AIO function prototypes
97 so that they reflect the "no optional parameters" rule.
98 - "ported" libcoro to C++.
99
1005.23 Mon May 17 18:50:42 CEST 2010
101 - be more resistant to ordering changes when initialising
102 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
103 Waldorf).
104 - document that perl 5.12 deliberately removed support for cloning.
105
1065.22 Wed Apr 14 03:55:35 CEST 2010
107 - correctly return udnef on errors in Coro::Handle::read/write
108 (testcase by Marc Mims).
109 - convert Coro::Util into a "perl compatibility wrapper" - the functions
110 are less useful now, but are drop-in replacements for existing
111 functions, listing better alternatives in the documentation. This also
112 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
113 with Coro::Util::inet_aton.
114 - do not override $Coro::idle unconditionally in Coro.pm, as other
115 modules could have provided their own idle coro already
116 (for exmaple, Coro::AnyEvent).
117 - fix Coro::Util::gethost* functions.
118 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
119
1205.21 Wed Dec 16 07:19:51 CET 2009
121 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
122 together.
123 - add some examples on how to combine other event loops with Coro in
124 Coro::AnyEvent, and how to run it (and not to block). Seems to be
125 the most common source of confusion.
126 - try to catch people naively blocking in an event callback.
127 - work around the perl filehandle bug issue in conjunction with
128 older common::sense (as indirectly pointed out by ZSystem).
129 - clarify the "not from signal handlers" section.
130
1315.2 Sun Oct 4 14:54:24 CEST 2009
132 - Coro::Storable destroyed the prototypes of the functions it wrapped.
133 - export rouse_cb and rouse_wait by default now.
134 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
135 - new method $state->swap_sv.
136 - added section on "windows process emulation" to the manpage,
137 after a not-so-fruitful (nor-friendly) "discussion" with chip
138 salzenberg (discussion implies arguments, but his only arguments
139 were ad-hominems, one wonders why he started it in the first
140 place). I hope this explains it well enough for him to understand,
141 and maybe well enough for others to understand.
142 - use common::sense everywhere now.
143 - idle callbacks are no longer supported, use idle coros instead.
144 - print a thread listing when a deadlock is detected.
145
1465.17 Sat Aug 22 23:09:31 CEST 2009
147 - work around a bug in the perl debugger causing crashes
148 when running under the debugger by marking _pool_handler as nodebug.
149 - speed up Coro::async considerably.
150 - try some hacks to get netbsd to work "more often" - their broken
151 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
152 - convert Coro to AE 5.0 API.
153
1545.162 Tue Jul 28 04:04:03 CEST 2009
155 - perl 5.8.2 is now minimum requirement.
156 - skip t/19_handle.t on broken windows perls.
157
1585.161 Wed Jul 22 04:47:38 CEST 2009
159 - Coro::AnyEvent::poll could have a different prototype when EV was
160 used as backend (analyzed by Tatsuhiko Miyagawa).
161 - Coro::AnyEvent errornously initialised the event loop when loaded,
162 not on demand.
163 - try to workaround rare */t/01_unblock.t failures.
164
1655.16 Tue Jul 21 01:44:37 CEST 2009
166 - Coro::AnyEvent failed to hook into the event loop
167 when no threads had been readied between detecting
168 the event loop and actually running it.
169 - considerably speed up Coro::Select by taking avdantage
170 of AnyEvent > 4.8 and some other optimisations.
171 - implement paragraph readline mode in Coro::Handle
172 (based on patches by Zsbán Ambrus).
173 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
174 and analyzed by Yasuhiro MATSUMOTO).
175 - clarified libcoro license and copyright.
176 - someone stole my EXTRA_META!!!
177 - implement Coro::Select::patch_pp_sselect and it's brother,
178 for hardcode select overriding.
179
1805.151 Mon Jul 6 05:41:57 CEST 2009
181 - backport to windows process emulation code again (patch by
182 Yasuhiro MATSUMOTO).
183 - slightly update Coro::MakeMaker.
184
1855.15 Tue Jun 30 10:28:06 CEST 2009
186 - deprecate Coro::Socket, document how to get ipv6 support via
187 AnyEvent::Socket instead.
188 - implement signal->wait ($cb) interface, similar to semaphores.
189 - work around SvOK not supporting getmagic, so we have to getmagic
190 to test for undef :/ (reported by Matthias Waldorf).
191 - load Coro::AnyEvent in all modules using AnyEvent.
192 - work around perl corrupting our internal data structures,
193 reported by Tokuhiro Matsuno.
194 - enable per-coroutine real and cpu time gathering
195 (Coro::State::enable_times).
196
1975.14 Wed Jun 24 01:37:48 CEST 2009
198 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
199 as this seems to have been a difficult concept (poll, sleep, idle,
200 idle_upto).
201 - add Coro::AnyEvent::readable/writable functions.
202 - clarify Coro::EV/Event/AnyEvent manpages.
203 - free per-thread global scalars in the thread calling ->cancel, to
204 avoid crashes when $_, $@ etc., are magical but some of those
205 had already been freed.
206 - "unexperimentalise" the callback interface for Coro::Semaphore.
207 - speed up ready queue management/context switching by using a linked
208 list instead of an array (~5-10%).
209 - implement "watch" command in Coro::Debug shells.
210 - for fun, implement time-slicing as an example in the manpage.
211 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
212 Coro::Event, use the normal AnyEvent handling instead of dieing
213 (the same is true for Coro::Handle).
214 - properly document Coro::EV::timed_io_once.
215 - avoid unneccessary ->cancel calls in Coro::Handle.
216 - maybe make it work on mingw32 with win32 backend
217 (based on patch by Yasuhiro Matsumoto).
218
2195.132 Fri May 29 09:00:39 CEST 2009
220 - do not keep a reference to the argument itself in
221 Coro::Semaphore::guard, as it could change later.
222 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
223 should support a prepare callback.
224
2255.131 Mon Mar 16 23:20:37 CET 2009
226 - implement and document Coro->suspend, Coro->resume.
227 - fix Coro::Select implementation to not (often) close
228 the passed file descriptors (testcase provided by pippijn).
229
2305.13 Mon Dec 15 21:51:42 CET 2008
231 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
232 - don't set diehook to C<undef> but instead to NULL, to avoid
233 spurious warnings.
234 - fix a lot of bugs in Coro::SemaphoreSet.
235 - Coro::SemaphoreSet will less often create a semaphore needlessly.
236 - add Coro::SemaphoreSet::count and wait methods.
237 - take advantage of the new Guard module.
238 - deprecate Coro::guard.
239 - try to fix the dreaded 01_unblock tests once more. I hate it when
240 testsuites need more fixing than the code they are supposed to test.
241 - croak in more cases when a required callback isn't resolvable.
242 - fix some minor issues in Coro::State->call/eval.
243 - use current coroutine context instead of a temporary one
244 when temporarily switching to another coroutine.
245 - do not call C-level on_destroy handlers during global destruction,
246 to avoid needless segfaults.
247
2485.12 Sun Dec 7 13:30:38 CET 2008
249 - add default config for MirOS, which seems to be a bug-to-bug
250 compatible fork of openbsd ("world domination by releasing
251 openbsd cvs before the openbsd folks do it" or so :).
252 - free_padlist did destroy the names pad, not good, but didn't
253 seem to bother perl - this could fix issues such as eval ""
254 inside a function called from multiple coroutines.
255 - use a different method to detect destruction time.
256 - be more careful when freeing padlists just before global
257 destruction.
258 - fixed and expanded the call/cc example.
259 - renamed _terminate to _coro_run.
260 - new method Coro::Channel->shutdown.
261 - try pthreads on openbsd <4.4 (broken sigaltstack, will
262 pthreads fare better?).
263 - be less picky about destroying "a" running coroutine.
264
2655.11 Tue Nov 25 21:49:05 CET 2008
266 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
267 working code with failed assertions, introducing more bugs than
268 it fixes, requiring elaborate workarounds :(
269
2705.1 Mon Nov 24 08:54:59 CET 2008
271 - wrote a small introductory tutorial - Coro::Intro.
272 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
273 - Coro::Select did errornously dup the file descriptors
274 and didn't work with all AnyEvent backends.
275 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
276 LWP data transfers.
277 - disassociate c contexts from coro objects - this is agruably more
278 correct, but mostly allows sharing of cctxs between coro and state
279 objects, for added memory savings and speed increases.
280 - bumped $Coro::POOL_RSS up to 32kb by default.
281 - no longer set the optype to OP_CUSTOM, as B::* understandably
282 doesn't like this very much (and we *are* a type of entersub).
283 - implement state cloning, just to prove that call/cc can be done.
284 - automatically load Coro::AnyEvent in Coro::Handle.
285 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
286 do not have this method (and don't need it either).
287 - speed up generic anyevent methods in Coro::Handle by using rouse
288 callbacks.
289 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
290 others. It also makes the debugger happier, as you can trace
291 through the idle threads now.
292 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
293 - eg/event was pretty broken.
294 - better 5.8.6 compatibility.
295
2965.0 Thu Nov 20 10:35:05 CET 2008
297 - NEW ARCHITECTURE: use the latest 4.x version if you experience
298 stability issues.
299 - bump API version to 7 - all dependents must be recompiled.
300 - removed timed_* functions - they were not being used anyways
301 and should be replaced by a more generic mechanism -
302 and were annoying to support anyways :)
303 - removed SemaphoreSet's waiter method - use sem method instead.
304 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
305 - async_pool did free a scalar value twice
306 ("Attempt to unreference...").
307 - fix a longstanding bug where calling terminate on a coro that
308 was waiting for a semaphore that was just becoming available
309 would cause a deadlock (semaphore would get into a state where
310 it was available but waiters were still blocked).
311 - calling throw on a coroutine that is waiting for a semaphore will
312 no longer make it acquire the semaphore (and thus leak a count).
313 - perl's process emulation is now not even theoretically supported
314 anymore.
315 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
316 conversion of callback-style to blocking-style.
317 - new methods $coro->schedule_to and ->cede_to, to specifically
318 schedule or cede to a specific coroutine.
319 - new function Coro::Semaphore::wait.
320 - use named constants in Coro::Channel (Richard Hundt).
321 - directly patch the entersub opcode calling SLF functions (cede,
322 transfer and so on). this does speed up context switching, but
323 more importanly, it frees us from the hardcoded behaviour of
324 entersub, so we might actually be able to return something from
325 those functions and atcually create new ones.
326 - take advantage of __builtin_frame_address on gcc.
327 - expose THX in coroapi (not sure whether this was a wise decision,
328 as "threaded" perls are running at half speed anyways).
329 - implement execute_slf (schedule-like-function) interface that makes
330 it possible to implement schedule-like-functions in XS.
331 - use new SLF interface to massively speed up Coro::EV by roughly a
332 factor of two.
333 - used new SLF interface to massively speed up Coro::Semaphore by a
334 factor of three.
335 - used new SLF interface to speed up Coro::AIO by roughly a factor of
336 four and reduce its memory usage considerably.
337 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
338 for a nice speedup and vastly more correct behaviour. Also implement
339 a new method "sem" to get at the underlying semaphore object.
340 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
341 (in comparison) 20-40% speedup.
342 - used new SLF interface to reimplement Coro::Signal gaining
343 some unknown (because I was too lazy), but certain, speedup, and also
344 making signals reliable for the first time.
345 - used new SLF interface and other optimisations to speed up async_pool
346 by a factor of two. It also doesn't rely on perl's exception mechanism
347 to exit anymore. The overhead for terminating an async_pool, coro over
348 a normal async is now very small.
349 - sped up coroutine creation/destruction by 40%.
350 - forgot to include Coro/libcoro/README in the dist for all these years.
351 - work around a freebsd pthreads bug (manual testcancel is required as
352 pthread_cond_wait isn't a cancellation point on freebsd).
353 - use new rouse functions to speed up and simplify Coro::BDB.
354 - make "prefer perl native functions" work with threaded perls.
355 - condense Coro::Debug ps output, hint at v and w flags.
356 - (libcoro) lots of minor cleanups and portability improvements.
357
3584.914 Wed Nov 19 12:54:18 CET 2008
359 - fix a disastrous bug in the readline optimisation
360 introduced in 4.801.
361
3624.913 Sat Nov 15 07:58:28 CET 2008
363 - async_pool did free a scalar value twice
364 ("Attempt to unreference...").
365
3664.912 Thu Nov 13 18:31:23 CET 2008
367 - minor cleanups.
368 - use much larger stacks on linux and perl < 5.8.8.
369 - Coro::Debug::new_unix_server did not unlink the socket
370 when destroyed.
371
3724.911 Tue Nov 11 04:26:17 CET 2008
373 - "port" to threaded perls.
374
3754.91 Mon Nov 10 05:36:38 CET 2008
376 - the ->throw exception object no longer leaks.
377 - creating a new cctx leaked a scopestack entry (memleak).
378 - new coroutines didn't get created with a zero flags field
379 (unknown impact).
380 - calling ->throw on a not-yet-started coroutine should now work
381 instead of being ignored.
382 - ->throw is now supported on Coro::State objects.
383 - clean up cctx creation code a bit.
384 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
385
3864.9 Sat Nov 8 17:45:27 CET 2008
387 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
388 - (libcoro) no longer leak threads in the experimental pthread backend,
389 also speed it up considerably.
390 - (libcoro) do not rely on makecontext passing void *'s unscathed.
391 - fix compiletime dependencies on libcoro in the Makefile.
392 - cctx_count wasn't always updated properly.
393 - Coro::State::cctx_stacksize wasn't applied correctly.
394 - new function Coro::State::cctx_max_idle.
395 - the default max number of idle C contexts is now 4.
396 - (libcoro) try harder to get _setjmp/_longjmp.
397 - (libcoro) cleanup and extend the libcoro API to officially
398 allow the creation of empty source contexts.
399 - very experimental workaround for the totally broken netbsd platform.
400 - tried to hack around openbsd bugs.
401
4024.804 Wed Nov 5 16:36:00 CET 2008
403 - Coro::Debug::new_unix_server would not create a non-blocking listening
404 socket, sometimes causing freezes.
405 - (libcoro) fix misaligned stack points for setjmp and assembly
406 methods, which can cause crashes on x86/x86_64 with a sufficiently
407 aggressive compiler.
408 - new function: Coro::Debug::new_tcp_server.
409 - move ->throw into the Coro class because it only works on coro objects.
410
4114.803 Mon Nov 3 17:16:12 CET 2008
412 - (libcoro) use a global asm statement to become independent of gcc
413 otpimisations for CORO_ASM (thanks to pippijn for the idea).
414 - try to workaround yet another broken bsd, this time dragonfly.
415
4164.802 Thu Oct 30 10:56:12 CET 2008
417 - support -fno-omit-frame-pointer on x86 with the assembly method.
418 - tune 01_unblock.t tests a bit.
419
4204.801 Wed Oct 22 18:33:37 CEST 2008
421 - improve readline speed for very long "lines".
422 - backport to 5.8.8.
423
4244.8 Thu Oct 2 13:34:40 CEST 2008
425 - new function Coro::AIO::aio_wait.
426 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
427 - greatly speed up and reduce memory usage of Coro::AIO requests.
428 - implement some other µ-optimisations.
429
4304.749 Mon Sep 29 14:40:12 CEST 2008
431 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
432
4334.748 Sat Sep 27 14:03:19 CEST 2008
434 - implement, but do not document, PerlIO::cede(granularity).
435 - Coro::Storable forgot to wrap Storable::pstore.
436 - work around the multitude of leaks and memory corruption
437 bugs in PerlIO::via by using our own C-level perliol. As a side
438 effect, Coro::Storable is now much, much, much faster.
439
4404.747 Tue Sep 23 01:59:41 CEST 2008
441 - fix a per-cv memleak (one empty array was leaked per
442 code reference).
443 - avoid a crash in coro->call|rss when the coroutine was already
444 destroyed (most noticably when using Coro::Debug::ps :)
445 - also protect *Storable::FILE.
446 - push up default storable granularity to 20ms.
447
4484.746 Sun Sep 21 03:22:20 CEST 2008
449 - be more insistent on locking Storable against reentrancy
450 in Coro::Storable.
451 - move swap_def?v and throw to Coro::State, as documented.
452
4534.745 Thu Jul 24 00:14:38 CEST 2008
454 - remove debugging code related to MgPV_nolen_const, also try to
455 make it compile with perl 5.8.6 (yes, apple apparently loves
456 outdated software). Reported by John S.
457
4584.744 Tue Jul 8 22:06:35 CEST 2008
459 - correctly provide default DIE/WARN handlers as documented.
460 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
461 implementations inside perl work fine for us.
462
4634.743 Mon Jun 16 00:21:57 CEST 2008
464 - when using Coro::EV without running EV::loop it could
465 result in busy-waiting for events, this has been fixed.
466 - reduce codesize and improve performance by using EV_DEFAULT_UC.
467
4684.742 Sat May 31 14:10:21 CEST 2008
469 - implement a workaround for (some) perl <5.8.8 versions.
470 - require EV 3.3+.
471
4724.741 Fri May 30 23:33:09 CEST 2008
473 - tell netbsd how utterly broken their imitation of an OS is
474 and refuse to build by default if pthreads are in use.
475 - switch to "s" method on all bsd's by default, as their ucontext
476 stuff seems just too broken.
477 - fix a bug in Coro::Select.
478
4794.74 Thu May 29 20:05:31 CEST 2008
480 - do not test Coro::LWP for lack of dependencies.
481 - do not test Coro::Select for lack of working perls.
482
4834.73 Thu May 29 2008
484 - fix a bug in Coro::EV which would cause it to block despite
485 there being runnable coroutines.
486 - sprinkle "no warnings" freely over everything, also suppress
487 warnings for some other modules.
488 - fix typo in WSAEWOULDBLOCK.
489
4904.72 Sun May 25 05:14:36 CEST 2008
491 - tweak META.yaml a bit, unfortunately, there is no documented way
492 to have optional dependencies with CPAN. doh :(
493 - avoid running some tests on windows because they would fail due to
494 perl bug (broken fork, broken pipes...).
495 - work around perl on windows bugs where perl returns undocumented
496 error codes for sysread, syswrite etc. by taking advantage
497 of AnyEvent's workaround for that problem.
498 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
499 a common perl implementation bug on windows.
500 - use unix domain sockets in testsuite to work around
501 common perl implementation bugs on widows (they are emulated by
502 tcp sockets on windows. ugh.)
503
5044.71 Sat May 24 20:01:27 CEST 2008
505 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
506 - take advantage of async name resolution of AnyEvent::Util.
507 - work around brutal inet_aton override in Coro::LWP.
508 - take advantage of the readyhook in Coro::EV, for smoother
509 scheduling.
510
5114.7 Sun May 11 00:32:19 CEST 2008
512 - completely reworked the Coro manpage.
513 - added Coro::AnyEvent, generic event loop integration.
514 - implement cancel, ready and kill commands in Coro::Debug.
515 - document find_coro in Coro::Debug.
516 - incompatible change: rename has_stack to has_cctx.
517 - Coro::AIO and Coro::BDB no longer force event model detection,
518 use AnyEvent::AIO and AnyEvent::BDB.
519
5204.6 Sat Apr 26 10:05:14 CEST 2008
521 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
522 by the Coro module. It was a mistake to have it in the first place.
523 - (experimental) support for activestate perl 5.10 (method "w").
524 - (experimental) support for strawberry perl (method "a").
525 - coro_sigelem_set did not return a value although it had to,
526 actual impact unknown.
527
5284.51 Mon Apr 14 13:28:27 CEST 2008
529 - make it compile again on 5.8.
530
5314.50 Thu Apr 10 09:43:17 CEST 2008
532 - I did it twice! (see 4.49).
533
5344.49 Sun Apr 6 21:23:31 CEST 2008
535 - grr, instead of compiling the recent changes on 5.10 only they
536 were compiled on 5.8 only.
537
5384.48 Sun Apr 6 20:36:46 CEST 2008
539 - allow coroutine switches during eval's under 5.10.x, as it seems
540 the parser is a per-interpreter option now, so this is safe
541 (this might fix the odd crashing bug).
542 - drop support for 5.9.x versions: they are dead, jim.
543
5444.47 Sun Apr 6 00:37:52 CEST 2008
545 - force cctx allocation on API calls: we know we need to force one
546 and gcc actually manages to confuse our heuristic nowadays,
547 leading to crashes and worse.
548 - document force_cctx.
549
5504.46 Fri Apr 4 22:05:43 CEST 2008
551 - upgrade libcoro, resulting in pthread-backend (which was only created
552 to fulfill the rules of the programming languages shootout).
553
5544.45 Thu Mar 13 11:55:36 CET 2008
555 - fix a file leaking bug in eg/mhyttpd that would allow
556 downloading of any file (reported by oesi).
557 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
558 (also add testcase).
559 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
560 apparently having loads of fun with that).
561 - implement $state->swap_defsv, ->swap_defav and document ->throw.
562
5634.4 Wed Feb 13 16:44:29 CET 2008
564 - only assume .cfi pseudo isns exist on GNU/Linux.
565 - add get_timed method to Coro::Channels.
566 - fixed Coro::Debug manpage.
567 - perl 5.11 compatbility improvement based on patch by
568 Andreas König.
569
5704.37 Sun Jan 20 11:25:23 CET 2008
571 - soften the check for an active parser for perl 5.10 (avoiding
572 "Coro::State::transfer called while parsing" in many cases).
573
5744.36 Sun Jan 13 10:53:56 CET 2008
575 - reset diehook when terminating from an async_pool as to not
576 trigger any __DIE__ handlers.
577
5784.35 Sun Jan 13 04:14:13 CET 2008
579 - "bt" debug command now displays any exceptions
580 from longmess and also skips the innermost
581 stackframes, giving more useufl output.
582 - allow backtraces in coroutines blocked in Coro::EV,
583 at a <1% speed hit.
584 - handle localising of $SIG{__WARN__} and __DIE__
585 properly (with a proper amount of dirty hacking).
586
5874.34 Sat Dec 22 17:49:53 CET 2007
588 - upgrade to EV version 2.0 API.
589
5904.33 Mon Dec 17 08:36:12 CET 2007
591 - make Coro::AIO etc. loadable in the absence of EV.
592
5934.32 Mon Dec 17 07:46:02 CET 2007
594 - majorly improved Coro::Handle's performance with Coro::EV.
595 - implemented the until now mythical Coro::BDB module.
596 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
597
5984.31 Wed Dec 5 12:32:39 CET 2007
599 - remove warn statement form Coro::Util.
600
6014.3 Tue Dec 4 20:33:14 CET 2007
602 - calls to the idle function could cause stack corruption
603 when the stack changed.
604 - do no longer rely on the presence of EV::DNS if EV is used
605 (because it is gone), but instead take avdantage of EV::ADNS
606 if available.
607 - add ($) prototypes to all functions in Coro::Storable.
608 - use a conventional (safer) idle callback in Coro::EV.
609 - do accept quickly in Coro::Debug to avoid endless loops.
610
6114.22 Fri Nov 30 16:04:04 CET 2007
612 - really use optimised versions for Event and EV in Coro::Util
613 and Coro::Handle.
614
6154.21 Sun Nov 25 10:48:59 CET 2007
616 - fix a spurious memory read.
617 - Coro::EV no longer keeps the eventloop "alive".
618
6194.2 Fri Nov 9 20:47:05 CET 2007
620 - enable/disable tracing from a new coroutine, not a pooled one.
621 - fix a memleak in Coro::Event.
622 - removed killall call from fork_eval.
623 - made sure store_fd is already loaded so that fork_eval
624 does not have to parse autoload in each subprocess.
625 - only use assembly method if -O switch is in $Config{optimize}.
626 - add (optional) Coro::EV module, so far the best event loop module
627 directly supported by Coro.
628 - if the event model is EV, use EV::DNS to resolve
629 stuff in Coro::Util.
630 - don't get confused by multiple event notifications in Coro::Handle.
631 - initial support for EV (libevent interface).
632 - require Event and EV using configure_requires, to force their existance.
633
6344.13 Wed Oct 24 07:26:45 CEST 2007
635 - add Coro::Storable::blocking_thaw.
636 - use a vastly more complicated technique to localise
637 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
638 - use a coroutine for the idle callback Coro::Event,
639 instead of running Event in the current coroutine context.
640 This also catches recursive invocations.
641 - actually report fork errors in gethostbyname and inet_aton.
642
6434.11 Thu Oct 11 02:40:24 CEST 2007
644 - port to threaded perls.
645
6464.1 Thu Oct 11 02:38:16 CEST 2007
647 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
648 be local to each coro (see Coro::State).
649 - incompatible change: for very deep reasons, cede and cede_notself
650 cannot return anything, so nothing will be returned.
651 - possibly bring back 5.10 compatibility (untested).
652 - work around stupid (and wrong) warning on 5.10 :(.
653 - overlay the saved state over the context stack. This saves
654 a few hundred bytes per coroutine on average and also
655 speeds up context switching a bit.
656 - further tune default stack sizes.
657 - (more) correctly calculate stack usage in coro_rss.
658 - Coro::Storable::blocking_* did not properly lock
659 resulting in races between coroutines.
660 - added Coro::Storable::guard.
661 - stopping to trace a coroutine could destroy the cctx of
662 an unrelated coroutine.
663 - explain the relationship between Perl and C coroutines in
664 more detail in Coro::State.
665 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
666 causing a fork per resolve. This also affected Coro::Socket.
667 - switch to a separate stack in $coro->call/eval to avoid
668 invalidating pointers.
669
6704.03 Sat Oct 6 21:24:00 CEST 2007
671 - added Coro::throw method.
672 - minor code cleanups.
673
6744.02 Sat Oct 6 02:36:47 CEST 2007
675 - fix a very minor per-coroutine memleak (a single codereference).
676 - fixed a bug where the currently in-use c context would be freed
677 prematurely (can happen only when programs change the stacksize
678 or use tracing).
679 - tracing can no longer keep a coro alive after it terminated.
680 - do static branch prediction in the common path for gcc. gives
681 about 2-5% speed improvement here.
682
6834.01 Fri Oct 5 22:10:49 CEST 2007
684 - instead of recreating *a* standard output handle we simply
685 use STDOUT, which is faster and hopefully more robust.
686
6874.0 Fri Oct 5 12:56:00 CEST 2007
688 - incompatibly changed Coro::Storable::freeze.
689 - major new feature: added Coro::Debug, for interactive coroutine
690 debugging, tracing and much more.
691 - major bug fix: unbelievable, but true: $_, $/ and many other
692 "saved" variables actually weren't being saved. This has been fixed,
693 of course, while increasing performance while losing all the save
694 flags.
695 - save flags are gone, and all the api functions dealing with them.
696 - added Coro::Semaphore::adjust.
697 - added Coro::Util::fork_eval.
698 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
699 - added Coro::killall.
700 - reduce initial stack sizes to allow for "micro-coroutines".
701 - better async_pool resource management, moved parts of async_pool
702 handling to XS (major speed improvement).
703 - actually croak before modifying important data structures.
704 - refuse to transfer while compiling.
705 - possibly support eval EXPR better now.
706 - enable assembly per default on linux+bsd x86+amd64.
707 - all internal members were renamed _something for easier subclassing.
708 - many minor tweaks.
709
7103.63 Wed May 16 14:10:06 CEST 2007
711 - implement handcoded assembly for x86/amd64 SVR ABI.
712
7133.62 Fri Apr 27 21:36:06 CEST 2007
714 - upgrade libcoro (which might set unwind info correctly).
715 - change default on linux to setjmp/longjmp.
716
7173.61 Thu Apr 19 12:36:18 CEST 2007
718 - Coro::Storable caused an endless loop when thawing invalid
719 pst's sometimes.
720 - use a Semaphore in Coro::Storable, as Storable doesn't
721 seem to be reentrant (although it is documented to
722 be threadsafe...).
723 - fix Coro::Signal to bring back the original unreliable
724 but stateful semantics.
725 - fixed a lot of typos in Coro.pm (patch submitted by David
726 Steinbrunner, which applied flawlessly).
727
7283.6 Sat Apr 14 17:13:31 CEST 2007
729 - added some bugfixes to get eg/myhttpd working again.
730 - added Coro::Storable for often-cede'ing freeze/thaw.
731 - try to do a clean exit when a coroutine calls exit
732 (EXPERIMENTAL).
733 - got rid of indirect call through _coro_init.
734 - updated the partly antique examples in eg/ to
735 work again and be a bit less magic, too.
736 - fixed Coro::Signal semantics to work as documented again.
737
7383.55 Sun Mar 25 01:20:47 CET 2007
739 - add SAVE_DEFFH to save the default filehandle and enable
740 it by default.
741 - finally move socket-operations from Coro::Socket to Coro::Handle
742 to be able to unblock foreign sockets.
743 - add Coro::State::save_also and guarded_save.
744 - add count accessor to Coro::Semaphore.
745 - add Coro::State::cctx_stacksize.
746 - just for the fun of it, do not rely on implicit context,
747 which can dramatically improve performance, but people
748 using windows-process-emulation perls do not care much about
749 performance.
750
7513.51 Sun Mar 4 14:18:04 CET 2007
752 - fixed a problem when you weakened references to Coro::State's
753 (patch by Yuval Kogman).
754
7553.501 Wed Feb 28 12:44:07 CET 2007
756 - rename some global symbols as macosx from hell redefines
757 them without asking.
758
7593.5 Tue Feb 13 20:22:53 CET 2007
760 - do AnyEvent model detection earlier, avoiding problems
761 caused by first using AnyEvent and later Coro::Event.
762 - implement and document Coro::Event event objects.
763 - fix a potential problem in Coro::Event causing crashes.
764 - initialise PL_comppad when creating a new coroutine,
765 avoids crashes on early coro destruction.
766
7673.41 Mon Jan 22 19:19:49 CET 2007
768 - readline on Coro::Handle did not support undefined $/,
769 nor did it deliver partial lines on EOF or error.
770 - implement malloc fallback for stack allocation because
771 stupid broken idiotic OSX has a stupid broken
772 idiotic fits-the-whole-os mmap "implementation" and
773 my dick feels longer if Coro is portable even to
774 obsolete platforms.
775
7763.4 Fri Jan 19 21:52:54 CET 2007
777 - remove t/09_timer.t, as it isn't really testing much
778 but was rather flaky in practise.
779 - async_pool coro would keep arguments and callback alive until
780 it was reused.
781 - cancellation of a coroutine could cause spurious idle calls
782 in cede_notself.
783
7843.3 Sat Jan 6 03:45:00 CET 2007
785 - implement $coro->on_destroy.
786 - Coro::Event blocking semantics have been changed,
787 documented and - hopefully - improved.
788 - fix nice adding, not subtracting, from priority.
789 - fix ->prio and api_is_ready (patch by Mark Hinds).
790 - fixed an assert ("... == prev__cctx->idle_te")
791 that could errronously trigger.
792 - fix various large and small memleaks.
793 - use a (hopefully) more stable cancel implementation
794 that immediately frees the coroutine data.
795 - cede/cede_notself return a status now.
796 - added Coro::guard function.
797 - added a global coroutine pool for jobs (on my machine,
798 I can create and execute 48k simple coros/s with async,
799 and 128k coros with async_pool).
800 - Coro::AIO now uses the coroutine priority as io priority.
801
8023.2 Fri Dec 22 05:07:09 CET 2006
803 - improve portability to slightly older perls.
804 - use cleaner coroutine destruction.
805 - simplify configuration for users.
806 - optionally (unrecommended) prefer perl functions over
807 their coro replacements.
808
8093.11 Tue Dec 5 13:11:24 CET 2006
810 - fixed some bogus assert's, but as perl.h disables assert even
811 without NDEBUG (thank you very much), not too many people should
812 notice (that did include myself). Andreas König noticed, though :)
813 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
814 it. Also noticed by Andreas König :)
815 - save/restore tainted status.
816 - verified to pass the testsuite on my 5.9.5.
817
8183.1 Mon Dec 4 23:03:40 CET 2006
819 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
820 - incompatible change: transfer flags are now per-state.
821 - give a better error message on deadlock.
822 - document Coro::nready.
823 - enhanced testsuite.
824
8253.01 Sun Dec 3 23:47:42 CET 2006
826 - forgot to include Coro::Timer.
827
8283.0 Sun Dec 3 22:57:25 CET 2006
829 - the "FINALLY COMPLETELY STABLE" release (coming soon:
830 the "FAMOUS LAST WORDS" release).
831 - implement a new stack sharing algorithm, which uses a stack
832 pool (size currently hardcoded).
833 - make stack sharing mandatory (it no longer uses a heuristic).
834 - eval/die no longer cause weird problems under heavy use.
835 - Coro::Event could cause livelocks if it was used but
836 no Coro::Event watchers were used.
837 - Coro::Event now uses asynccheck as prepare does not
838 check for changed watchers.
839 - Coro::Event allows multiple waiting coros and will wake up one
840 per event.
841 - Coro::Event should be cleaner and more efficient now.
842 - new utility function Coro::unblock_sub.
843 - document the sad fact that Event is no longer reentrant.
844 - putting a coroutine into the ready queue twice could under
845 some circumstances lead to stack corruption.
846 - minor incompatibility: subclassing Coro::State is supported
847 directly now without going through a _coro_state member.
848 - state/coro switching is much faster now.
849 - very minor optimisations and code/documentation cleanup.
850 - avoid problems due to compiler inlining.
851 - removed timers from Coro::Timer -> use AnyEvent instead.
852 - replaced Coro::idle coroutine by (cleaner) idle handler.
853 - updated to newest libcoro.
854 - implement enhanced support for valgrind.
855 - implement is_ready and return value for ready.
856 - removed Coro::Cont, it was a misnomer (it's generators),
857 and it was somewhat annoying to get it right. Will come back
858 if somebody asks for it :)
859 - many ->wait methods and Coro::Event could return
860 spuriously without the event having happened.
861
8622.5 Tue Nov 7 12:22:33 CET 2006
863 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
864 use AnyEvent, moved them to Coro/.
865 - added Coro::LWP which contains all the uglyness required to
866 make LWP non-blocking.
867 - should work with perl 5.9.x now (Andreas König made me do it).
868 - fixed another bug in Coro::Select when the timeout was undef.
869 - reuse PL_start_env for all coros, saves some memory per coroutine.
870 - manage PL_top_env differently, hopefully to avoid panic: top_env.
871 - timeout argument was not properly used in Coro::Socket.
872 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
873 - emulate undocumented(!) functionality of IO::Socket required
874 by LWP(!!).
875 - updated eg/lwp to work with newer lwp's.
876 - remove "FATAL: uncaught exception" prefix. Coroutines that die
877 kill the whole process, just as exceptions in the main "coroutine"
878 did already.
879
8802.1 Wed Nov 1 23:01:13 CET 2006
881 - fix a long-standing bug in Coro::Select where select with
882 zero timeout would instead change the current default filehandle.
883 - use a simpler and hopefully more robust way to clone padlists
884 (uses less memory and a perl function instead of our own).
885 - coro can now create a stack guard area on many architectures.
886 - Coro::AIO properly reexports additional functions from IO::AIO.
887 - updated libcoro with a workaround for OS X,
888 pach and testing by Michael Schwern.
889
8902.0 Tue Oct 24 05:47:17 CEST 2006
891 - support additional aio requests in Coro::AIO.
892
8931.9 (never properly released due to a glitch)
894
8951.8 Thu Feb 2 00:59:06 CET 2006
896 - applied suggested patch by SAMV to avoid problems during stupid
897 mark & sweep gc run.
898 - applied patch by Scott Walters for 5.9.3 compatibility.
899
9001.7 Tue Dec 27 01:41:58 CET 2005
901 - added Coro::AIO, a thin wrapper around IO::AIO.
902 - improved Makefile.PL explanations.
903
9041.6 Mon Dec 12 21:30:05 CET 2005
905 - additionally save PM_curpm might fix as-of-yet
906 unseen problems with regex matches being attributed to the
907 wrong package.
908 - add t/10_bugs.t, which currently checks against imho broken
909 perls that use 0.26MB of stack space per Perl_magic_get
910 invocation (newer linuxes) as opposed to the 0.0002MB perl
911 normally uses.
912 - make stacksize configurable for the ultimate debian experience.
913
9141.51 Mon Dec 12 18:48:36 CET 2005
915 - remove debugging warn() accidentally left in Coro::Select.
916
9171.5 Tue Nov 29 13:32:44 CET 2005
918 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
919 - fix Coro::Select 'select'.
920 - strict'ify some modules.
921 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
922 - use XSLoader in selected modules.
923 - remove some 5.6 compatibility cruft.
924
9251.4 Tue Sep 6 00:11:05 CEST 2005
926 - libcoro did not take into account the trampoline on amd64,
927 when 'l'inux method was used.
928
9291.31 Tue Aug 30 23:31:33 CEST 2005
930 - some portability fixes/workarounds.
931
9321.3 Sat Aug 20 03:08:56 CEST 2005
933 - no code changes. module seems to work fine.
934 - improve Coro::State docs, remove reference to nonexisting
935 Coro::State::flush method.
936 - no longer autodetect windows, present it as an option instead.
937
9381.2 Mon May 16 02:00:55 CEST 2005
939 - included libcoro.c earlier in State.xs, might improve portability.
940 - use a faster and possibly more stable Coro::Cont implementation.
941 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
942 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
943 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
944
9451.11 Thu Mar 3 18:00:52 CET 2005
946 - change of contact address.
947
9481.1 Tue Feb 22 20:51:16 CET 2005
949 - support [l]inux method on amd64.
950 - allow some context switches while compiling/eval'ing.
951
9521.0 Tue Aug 10 03:47:27 CEST 2004
953 - Event 0.89 fixes the bug again.
954 - fix the remaining(??) memleak. I didn't free the cache-AV for
955 padlists, so one AV per created anon-sub leaked.
956
9570.97 Fri May 14 15:23:32 CEST 2004
958 - remove stupid gcc extension that was an experiment only anyway.
959
9600.96 Thu May 13 18:09:29 CEST 2004
961 - tell people if they have yet another broken Event variant.
962 - made Coro to work _better_ with threads (it seems that, as long
963 as you use Coros in one thread only everything will work fine.
964 Looking at the perl source the problem might be missing locking
965 between Coro and some perl internal routines. That's not easily
966 fixable).
967 - (hopefully) got rid of the static xnext inside transfer.
968
9690.95 Sun Feb 15 03:20:28 CET 2004
970 - removed Coro::State::flush, implemented a new and much
971 faster caching mechanism by attaching magic to the CV.
972 - a memleak with (real) closures remains.
973 - dramatically reduced size of stacks to 65536 (linux/x86), after
974 observing that even myhttpd never had more than a kilobyte
975 of stack in use (stack is still only physically allocated in
976 pagesize increments for systems suporting mmap).
977 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
978 - fix for threaded perl.
979
9800.9 Sun Nov 23 04:32:39 CET 2003
981 - fix a few very hard to track down but (of course) stupid
982 memory leaks.
983 - stringify version number to avoid locale problems :(.
984 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
985 hopefully ignoring it "just works".
986
9870.8 Wed Nov 5 19:38:40 CET 2003
988 - port to perl5.005_03, but only 5.8.x+ is supported!
989 - honor LocalAddr even without LocalPort in Coro::Socket.
990
9910.7 Tue May 27 03:12:38 CEST 2003
992 - the version jump indicates some level of testing, not gobs
993 of new features.
994 - uh... I found the prompt function in ExtUtils::MakeMaker.
995 Highly correct stuff, that is...
996 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
997 the fix is not well understood by the author, so beware :(.
998
9990.652 Thu May 8 02:54:46 CEST 2003
1000 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
1001 cause version 4 doesn't have ucontext.
1002 - Benjamin Reed reported that setjmp works fine on darwin,
1003 so preselect it.
1004
10050.651 Sat Mar 29 15:00:23 CET 2003
1006 - fix a bug in Coro::Handle where some bytes could get lost
1007 on reading, reported by jason@nichego.net.
1008
10090.65 Sun Mar 23 00:08:26 CET 2003
1010 - added a README.linux-glibc.
1011 - new module Coro::Select.
1012 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
1013 (I never claimed that I know what I am doing ;).
1014 - set default to setjmp/longjmp on non-x86-linux.
2 1015
30.6 Thu Nov 21 11:09:06 CET 2002 10160.6 Thu Nov 21 11:09:06 CET 2002
4 - made lazy context switching the default. 1017 - made lazy context switching the default.
5 - fixed the bug where SemaphoreSet::guard 1018 - fixed the bug where SemaphoreSet::guard
6 was the same as timed_guard and timed_guard was missing. 1019 was the same as timed_guard and timed_guard was missing.

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