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Comparing Coro/Changes (file contents):
Revision 1.95 by root, Sun May 30 19:26:39 2004 UTC vs.
Revision 1.568 by root, Fri Jun 10 12:27:02 2011 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
30.98 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: channel->maxsize(newsize)?
5TODO: http://www.microsoft.com/msj/archive/s2ce.aspx
6
7TODO: tutorial
8TODO: in_eval, PL_tained
9 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
10 destroyed and cleaned up automatically (e.g. async { schedule }).
11 - Coro::State->is_destroyed is now called is_zombie.
12 - implement a Coro->safe_cancel method that might fail, but
13 cancels in a "safer" way if it succeeds.
14 - get rid of two hash-accesses when initialising a new Coro - this
15 speeds up coro creation by almost a factor of two.
16 - croak when a coro that is being cancelled tries to block
17 (e.g. while executing a guard block), instead of crashing or
18 deadlocking.
19 - use a more robust and also faster method to identify Coro::State
20 objects - speeds up everything a bit.
21 - implement Coro->cancel in XS for a 20% speed improvement, and to
22 be able to implement mutual cancellation.
23 - speed up context switches by a percent or two by more efficiently
24 allocating context stack entries.
25 - implement Coro->join and Coro->on_destroy in XS for a speedup and
26 a reduction in memory use.
27 - cancelling a coro while it itself is cancelling another coro is
28 now supported and working, instead of triggering an assertion.
29 - be a bit more crash-resistant when calling (buggy) on_destroy
30 callbacks (best effort).
31 - move on_destroy into the slf_frame, to allow extension slf
32 functions to have destructors.
33 - get rid if coro refcounting - simply crash in other interpreter
34 threads by nulling the pointers on clone.
35 - simplify warn/die hook handling when loading Coro - the convoluted
36 logic seems to be no longer neccessary.
37 - use libecb instead of our own home-grown gcc hacks.
38
395.372 Wed Feb 23 06:14:30 CET 2011
40 - apparently mingw doesn't provide a working gettimeofday, try to
41 work around that by relying on Time::HiRes (indirectly brought to
42 my attention by Max Maischein).
43 - fix some portability issues when Time::HiRes was used.
44
455.371 Mon Feb 21 14:36:08 CET 2011
46 - backport to windows process emulation code again.
47
485.37 Sat Feb 19 07:49:44 CET 2011
49 - add a big "Coro thread life cycle" section to "man Coro".
50 - try a tentative workaround against the breakage that 5.13 has
51 introduced without depreciation period. sigh.
52 - no longer use Time::HiRes if gettimeofday is available, which
53 saves quite a lot of memory.
54
555.36 Sun Feb 13 05:33:41 CET 2011
56 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
57 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
58 method call.
59 - undocument Coro::Timer::sleep and obsolete whole module.
60 - optimise Coro::Timer::timeout memory and cpu usage.
61 - slightly updated Coro::Intro for recent changes.
62 - do not initialise PL_dirty anymore.
63
645.25 Thu Nov 11 01:08:39 CET 2010
65 - try a different approach on netbsd - netbsd 5 finally has marginally
66 working pthreads, but still broken ucontext/sigaltstack.
67 - openbsd 4.8 finally got their act together, Coro works out of the box
68 with asm, setjmp and pthreads (no change, just informational).
69
705.24 Sat Oct 23 11:27:12 CEST 2010
71 - port to the EV 4.0 API.
72 - work around bugs in mingw32, making strawberry perl work
73 out of the box.
74 - correctly modify Coro::AIO function prototypes
75 so that they reflect the "no optional parameters" rule.
76 - "ported" libcoro to C++.
77
785.23 Mon May 17 18:50:42 CEST 2010
79 - be more resistant to ordering changes when initialising
80 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
81 Waldorf).
82 - document that perl 5.12 deliberately removed support for cloning.
83
845.22 Wed Apr 14 03:55:35 CEST 2010
85 - correctly return udnef on errors in Coro::Handle::read/write
86 (testcase by Marc Mims).
87 - convert Coro::Util into a "perl compatibility wrapper" - the functions
88 are less useful now, but are drop-in replacements for existing
89 functions, listing better alternatives in the documentation. This also
90 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
91 with Coro::Util::inet_aton.
92 - do not override $Coro::idle unconditionally in Coro.pm, as other
93 modules could have provided their own idle coro already
94 (for exmaple, Coro::AnyEvent).
95 - fix Coro::Util::gethost* functions.
96 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
97
985.21 Wed Dec 16 07:19:51 CET 2009
99 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
100 together.
101 - add some examples on how to combine other event loops with Coro in
102 Coro::AnyEvent, and how to run it (and not to block). Seems to be
103 the most common source of confusion.
104 - try to catch people naively blocking in an event callback.
105 - work around the perl filehandle bug issue in conjunction with
106 older common::sense (as indirectly pointed out by ZSystem).
107 - clarify the "not from signal handlers" section.
108
1095.2 Sun Oct 4 14:54:24 CEST 2009
110 - Coro::Storable destroyed the prototypes of the functions it wrapped.
111 - export rouse_cb and rouse_wait by default now.
112 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
113 - new method $state->swap_sv.
114 - added section on "windows process emulation" to the manpage,
115 after a not-so-fruitful (nor-friendly) "discussion" with chip
116 salzenberg (discussion implies arguments, but his only arguments
117 were ad-hominems, one wonders why he started it in the first
118 place). I hope this explains it well enough for him to understand,
119 and maybe well enough for others to understand.
120 - use common::sense everywhere now.
121 - idle callbacks are no longer supported, use idle coros instead.
122 - print a thread listing when a deadlock is detected.
123
1245.17 Sat Aug 22 23:09:31 CEST 2009
125 - work around a bug in the perl debugger causing crashes
126 when running under the debugger by marking _pool_handler as nodebug.
127 - speed up Coro::async considerably.
128 - try some hacks to get netbsd to work "more often" - their broken
129 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
130 - convert Coro to AE 5.0 API.
131
1325.162 Tue Jul 28 04:04:03 CEST 2009
133 - perl 5.8.2 is now minimum requirement.
134 - skip t/19_handle.t on broken windows perls.
135
1365.161 Wed Jul 22 04:47:38 CEST 2009
137 - Coro::AnyEvent::poll could have a different prototype when EV was
138 used as backend (analyzed by Tatsuhiko Miyagawa).
139 - Coro::AnyEvent errornously initialised the event loop when loaded,
140 not on demand.
141 - try to workaround rare */t/01_unblock.t failures.
142
1435.16 Tue Jul 21 01:44:37 CEST 2009
144 - Coro::AnyEvent failed to hook into the event loop
145 when no threads had been readied between detecting
146 the event loop and actually running it.
147 - considerably speed up Coro::Select by taking avdantage
148 of AnyEvent > 4.8 and some other optimisations.
149 - implement paragraph readline mode in Coro::Handle
150 (based on patches by Zsbán Ambrus).
151 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
152 and analyzed by Yasuhiro MATSUMOTO).
153 - clarified libcoro license and copyright.
154 - someone stole my EXTRA_META!!!
155 - implement Coro::Select::patch_pp_sselect and it's brother,
156 for hardcode select overriding.
157
1585.151 Mon Jul 6 05:41:57 CEST 2009
159 - backport to windows process emulation code again (patch by
160 Yasuhiro MATSUMOTO).
161 - slightly update Coro::MakeMaker.
162
1635.15 Tue Jun 30 10:28:06 CEST 2009
164 - deprecate Coro::Socket, document how to get ipv6 support via
165 AnyEvent::Socket instead.
166 - implement signal->wait ($cb) interface, similar to semaphores.
167 - work around SvOK not supporting getmagic, so we have to getmagic
168 to test for undef :/ (reported by Matthias Waldorf).
169 - load Coro::AnyEvent in all modules using AnyEvent.
170 - work around perl corrupting our internal data structures,
171 reported by Tokuhiro Matsuno.
172 - enable per-coroutine real and cpu time gathering
173 (Coro::State::enable_times).
174
1755.14 Wed Jun 24 01:37:48 CEST 2009
176 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
177 as this seems to have been a difficult concept (poll, sleep, idle,
178 idle_upto).
179 - add Coro::AnyEvent::readable/writable functions.
180 - clarify Coro::EV/Event/AnyEvent manpages.
181 - free per-thread global scalars in the thread calling ->cancel, to
182 avoid crashes when $_, $@ etc., are magical but some of those
183 had already been freed.
184 - "unexperimentalise" the callback interface for Coro::Semaphore.
185 - speed up ready queue management/context switching by using a linked
186 list instead of an array (~5-10%).
187 - implement "watch" command in Coro::Debug shells.
188 - for fun, implement time-slicing as an example in the manpage.
189 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
190 Coro::Event, use the normal AnyEvent handling instead of dieing
191 (the same is true for Coro::Handle).
192 - properly document Coro::EV::timed_io_once.
193 - avoid unneccessary ->cancel calls in Coro::Handle.
194 - maybe make it work on mingw32 with win32 backend
195 (based on patch by Yasuhiro Matsumoto).
196
1975.132 Fri May 29 09:00:39 CEST 2009
198 - do not keep a reference to the argument itself in
199 Coro::Semaphore::guard, as it could change later.
200 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
201 should support a prepare callback.
202
2035.131 Mon Mar 16 23:20:37 CET 2009
204 - implement and document Coro->suspend, Coro->resume.
205 - fix Coro::Select implementation to not (often) close
206 the passed file descriptors (testcase provided by pippijn).
207
2085.13 Mon Dec 15 21:51:42 CET 2008
209 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
210 - don't set diehook to C<undef> but instead to NULL, to avoid
211 spurious warnings.
212 - fix a lot of bugs in Coro::SemaphoreSet.
213 - Coro::SemaphoreSet will less often create a semaphore needlessly.
214 - add Coro::SemaphoreSet::count and wait methods.
215 - take advantage of the new Guard module.
216 - deprecate Coro::guard.
217 - try to fix the dreaded 01_unblock tests once more. I hate it when
218 testsuites need more fixing than the code they are supposed to test.
219 - croak in more cases when a required callback isn't resolvable.
220 - fix some minor issues in Coro::State->call/eval.
221 - use current coroutine context instead of a temporary one
222 when temporarily switching to another coroutine.
223 - do not call C-level on_destroy handlers during global destruction,
224 to avoid needless segfaults.
225
2265.12 Sun Dec 7 13:30:38 CET 2008
227 - add default config for MirOS, which seems to be a bug-to-bug
228 compatible fork of openbsd ("world domination by releasing
229 openbsd cvs before the openbsd folks do it" or so :).
230 - free_padlist did destroy the names pad, not good, but didn't
231 seem to bother perl - this could fix issues such as eval ""
232 inside a function called from multiple coroutines.
233 - use a different method to detect destruction time.
234 - be more careful when freeing padlists just before global
235 destruction.
236 - fixed and expanded the call/cc example.
237 - renamed _terminate to _coro_run.
238 - new method Coro::Channel->shutdown.
239 - try pthreads on openbsd <4.4 (broken sigaltstack, will
240 pthreads fare better?).
241 - be less picky about destroying "a" running coroutine.
242
2435.11 Tue Nov 25 21:49:05 CET 2008
244 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
245 working code with failed assertions, introducing more bugs than
246 it fixes, requiring elaborate workarounds :(
247
2485.1 Mon Nov 24 08:54:59 CET 2008
249 - wrote a small introductory tutorial - Coro::Intro.
250 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
251 - Coro::Select did errornously dup the file descriptors
252 and didn't work with all AnyEvent backends.
253 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
254 LWP data transfers.
255 - disassociate c contexts from coro objects - this is agruably more
256 correct, but mostly allows sharing of cctxs between coro and state
257 objects, for added memory savings and speed increases.
258 - bumped $Coro::POOL_RSS up to 32kb by default.
259 - no longer set the optype to OP_CUSTOM, as B::* understandably
260 doesn't like this very much (and we *are* a type of entersub).
261 - implement state cloning, just to prove that call/cc can be done.
262 - automatically load Coro::AnyEvent in Coro::Handle.
263 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
264 do not have this method (and don't need it either).
265 - speed up generic anyevent methods in Coro::Handle by using rouse
266 callbacks.
267 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
268 others. It also makes the debugger happier, as you can trace
269 through the idle threads now.
270 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
271 - eg/event was pretty broken.
272 - better 5.8.6 compatibility.
273
2745.0 Thu Nov 20 10:35:05 CET 2008
275 - NEW ARCHITECTURE: use the latest 4.x version if you experience
276 stability issues.
277 - bump API version to 7 - all dependents must be recompiled.
278 - removed timed_* functions - they were not being used anyways
279 and should be replaced by a more generic mechanism -
280 and were annoying to support anyways :)
281 - removed SemaphoreSet's waiter method - use sem method instead.
282 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
283 - async_pool did free a scalar value twice
284 ("Attempt to unreference...").
285 - fix a longstanding bug where calling terminate on a coro that
286 was waiting for a semaphore that was just becoming available
287 would cause a deadlock (semaphore would get into a state where
288 it was available but waiters were still blocked).
289 - calling throw on a coroutine that is waiting for a semaphore will
290 no longer make it acquire the semaphore (and thus leak a count).
291 - perl's process emulation is now not even theoretically supported
292 anymore.
293 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
294 conversion of callback-style to blocking-style.
295 - new methods $coro->schedule_to and ->cede_to, to specifically
296 schedule or cede to a specific coroutine.
297 - new function Coro::Semaphore::wait.
298 - use named constants in Coro::Channel (Richard Hundt).
299 - directly patch the entersub opcode calling SLF functions (cede,
300 transfer and so on). this does speed up context switching, but
301 more importanly, it frees us from the hardcoded behaviour of
302 entersub, so we might actually be able to return something from
303 those functions and atcually create new ones.
304 - take advantage of __builtin_frame_address on gcc.
305 - expose THX in coroapi (not sure whether this was a wise decision,
306 as "threaded" perls are running at half speed anyways).
307 - implement execute_slf (schedule-like-function) interface that makes
308 it possible to implement schedule-like-functions in XS.
309 - use new SLF interface to massively speed up Coro::EV by roughly a
310 factor of two.
311 - used new SLF interface to massively speed up Coro::Semaphore by a
312 factor of three.
313 - used new SLF interface to speed up Coro::AIO by roughly a factor of
314 four and reduce its memory usage considerably.
315 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
316 for a nice speedup and vastly more correct behaviour. Also implement
317 a new method "sem" to get at the underlying semaphore object.
318 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
319 (in comparison) 20-40% speedup.
320 - used new SLF interface to reimplement Coro::Signal gaining
321 some unknown (because I was too lazy), but certain, speedup, and also
322 making signals reliable for the first time.
323 - used new SLF interface and other optimisations to speed up async_pool
324 by a factor of two. It also doesn't rely on perl's exception mechanism
325 to exit anymore. The overhead for terminating an async_pool, coro over
326 a normal async is now very small.
327 - sped up coroutine creation/destruction by 40%.
328 - forgot to include Coro/libcoro/README in the dist for all these years.
329 - work around a freebsd pthreads bug (manual testcancel is required as
330 pthread_cond_wait isn't a cancellation point on freebsd).
331 - use new rouse functions to speed up and simplify Coro::BDB.
332 - make "prefer perl native functions" work with threaded perls.
333 - condense Coro::Debug ps output, hint at v and w flags.
334 - (libcoro) lots of minor cleanups and portability improvements.
335
3364.914 Wed Nov 19 12:54:18 CET 2008
337 - fix a disastrous bug in the readline optimisation
338 introduced in 4.801.
339
3404.913 Sat Nov 15 07:58:28 CET 2008
341 - async_pool did free a scalar value twice
342 ("Attempt to unreference...").
343
3444.912 Thu Nov 13 18:31:23 CET 2008
345 - minor cleanups.
346 - use much larger stacks on linux and perl < 5.8.8.
347 - Coro::Debug::new_unix_server did not unlink the socket
348 when destroyed.
349
3504.911 Tue Nov 11 04:26:17 CET 2008
351 - "port" to threaded perls.
352
3534.91 Mon Nov 10 05:36:38 CET 2008
354 - the ->throw exception object no longer leaks.
355 - creating a new cctx leaked a scopestack entry (memleak).
356 - new coroutines didn't get created with a zero flags field
357 (unknown impact).
358 - calling ->throw on a not-yet-started coroutine should now work
359 instead of being ignored.
360 - ->throw is now supported on Coro::State objects.
361 - clean up cctx creation code a bit.
362 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
363
3644.9 Sat Nov 8 17:45:27 CET 2008
365 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
366 - (libcoro) no longer leak threads in the experimental pthread backend,
367 also speed it up considerably.
368 - (libcoro) do not rely on makecontext passing void *'s unscathed.
369 - fix compiletime dependencies on libcoro in the Makefile.
370 - cctx_count wasn't always updated properly.
371 - Coro::State::cctx_stacksize wasn't applied correctly.
372 - new function Coro::State::cctx_max_idle.
373 - the default max number of idle C contexts is now 4.
374 - (libcoro) try harder to get _setjmp/_longjmp.
375 - (libcoro) cleanup and extend the libcoro API to officially
376 allow the creation of empty source contexts.
377 - very experimental workaround for the totally broken netbsd platform.
378 - tried to hack around openbsd bugs.
379
3804.804 Wed Nov 5 16:36:00 CET 2008
381 - Coro::Debug::new_unix_server would not create a non-blocking listening
382 socket, sometimes causing freezes.
383 - (libcoro) fix misaligned stack points for setjmp and assembly
384 methods, which can cause crashes on x86/x86_64 with a sufficiently
385 aggressive compiler.
386 - new function: Coro::Debug::new_tcp_server.
387 - move ->throw into the Coro class because it only works on coro objects.
388
3894.803 Mon Nov 3 17:16:12 CET 2008
390 - (libcoro) use a global asm statement to become independent of gcc
391 otpimisations for CORO_ASM (thanks to pippijn for the idea).
392 - try to workaround yet another broken bsd, this time dragonfly.
393
3944.802 Thu Oct 30 10:56:12 CET 2008
395 - support -fno-omit-frame-pointer on x86 with the assembly method.
396 - tune 01_unblock.t tests a bit.
397
3984.801 Wed Oct 22 18:33:37 CEST 2008
399 - improve readline speed for very long "lines".
400 - backport to 5.8.8.
401
4024.8 Thu Oct 2 13:34:40 CEST 2008
403 - new function Coro::AIO::aio_wait.
404 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
405 - greatly speed up and reduce memory usage of Coro::AIO requests.
406 - implement some other µ-optimisations.
407
4084.749 Mon Sep 29 14:40:12 CEST 2008
409 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
410
4114.748 Sat Sep 27 14:03:19 CEST 2008
412 - implement, but do not document, PerlIO::cede(granularity).
413 - Coro::Storable forgot to wrap Storable::pstore.
414 - work around the multitude of leaks and memory corruption
415 bugs in PerlIO::via by using our own C-level perliol. As a side
416 effect, Coro::Storable is now much, much, much faster.
417
4184.747 Tue Sep 23 01:59:41 CEST 2008
419 - fix a per-cv memleak (one empty array was leaked per
420 code reference).
421 - avoid a crash in coro->call|rss when the coroutine was already
422 destroyed (most noticably when using Coro::Debug::ps :)
423 - also protect *Storable::FILE.
424 - push up default storable granularity to 20ms.
425
4264.746 Sun Sep 21 03:22:20 CEST 2008
427 - be more insistent on locking Storable against reentrancy
428 in Coro::Storable.
429 - move swap_def?v and throw to Coro::State, as documented.
430
4314.745 Thu Jul 24 00:14:38 CEST 2008
432 - remove debugging code related to MgPV_nolen_const, also try to
433 make it compile with perl 5.8.6 (yes, apple apparently loves
434 outdated software). Reported by John S.
435
4364.744 Tue Jul 8 22:06:35 CEST 2008
437 - correctly provide default DIE/WARN handlers as documented.
438 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
439 implementations inside perl work fine for us.
440
4414.743 Mon Jun 16 00:21:57 CEST 2008
442 - when using Coro::EV without running EV::loop it could
443 result in busy-waiting for events, this has been fixed.
444 - reduce codesize and improve performance by using EV_DEFAULT_UC.
445
4464.742 Sat May 31 14:10:21 CEST 2008
447 - implement a workaround for (some) perl <5.8.8 versions.
448 - require EV 3.3+.
449
4504.741 Fri May 30 23:33:09 CEST 2008
451 - tell netbsd how utterly broken their imitation of an OS is
452 and refuse to build by default if pthreads are in use.
453 - switch to "s" method on all bsd's by default, as their ucontext
454 stuff seems just too broken.
455 - fix a bug in Coro::Select.
456
4574.74 Thu May 29 20:05:31 CEST 2008
458 - do not test Coro::LWP for lack of dependencies.
459 - do not test Coro::Select for lack of working perls.
460
4614.73 Thu May 29 2008
462 - fix a bug in Coro::EV which would cause it to block despite
463 there being runnable coroutines.
464 - sprinkle "no warnings" freely over everything, also suppress
465 warnings for some other modules.
466 - fix typo in WSAEWOULDBLOCK.
467
4684.72 Sun May 25 05:14:36 CEST 2008
469 - tweak META.yaml a bit, unfortunately, there is no documented way
470 to have optional dependencies with CPAN. doh :(
471 - avoid running some tests on windows because they would fail due to
472 perl bug (broken fork, broken pipes...).
473 - work around perl on windows bugs where perl returns undocumented
474 error codes for sysread, syswrite etc. by taking advantage
475 of AnyEvent's workaround for that problem.
476 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
477 a common perl implementation bug on windows.
478 - use unix domain sockets in testsuite to work around
479 common perl implementation bugs on widows (they are emulated by
480 tcp sockets on windows. ugh.)
481
4824.71 Sat May 24 20:01:27 CEST 2008
483 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
484 - take advantage of async name resolution of AnyEvent::Util.
485 - work around brutal inet_aton override in Coro::LWP.
486 - take advantage of the readyhook in Coro::EV, for smoother
487 scheduling.
488
4894.7 Sun May 11 00:32:19 CEST 2008
490 - completely reworked the Coro manpage.
491 - added Coro::AnyEvent, generic event loop integration.
492 - implement cancel, ready and kill commands in Coro::Debug.
493 - document find_coro in Coro::Debug.
494 - incompatible change: rename has_stack to has_cctx.
495 - Coro::AIO and Coro::BDB no longer force event model detection,
496 use AnyEvent::AIO and AnyEvent::BDB.
497
4984.6 Sat Apr 26 10:05:14 CEST 2008
499 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
500 by the Coro module. It was a mistake to have it in the first place.
501 - (experimental) support for activestate perl 5.10 (method "w").
502 - (experimental) support for strawberry perl (method "a").
503 - coro_sigelem_set did not return a value although it had to,
504 actual impact unknown.
505
5064.51 Mon Apr 14 13:28:27 CEST 2008
507 - make it compile again on 5.8.
508
5094.50 Thu Apr 10 09:43:17 CEST 2008
510 - I did it twice! (see 4.49).
511
5124.49 Sun Apr 6 21:23:31 CEST 2008
513 - grr, instead of compiling the recent changes on 5.10 only they
514 were compiled on 5.8 only.
515
5164.48 Sun Apr 6 20:36:46 CEST 2008
517 - allow coroutine switches during eval's under 5.10.x, as it seems
518 the parser is a per-interpreter option now, so this is safe
519 (this might fix the odd crashing bug).
520 - drop support for 5.9.x versions: they are dead, jim.
521
5224.47 Sun Apr 6 00:37:52 CEST 2008
523 - force cctx allocation on API calls: we know we need to force one
524 and gcc actually manages to confuse our heuristic nowadays,
525 leading to crashes and worse.
526 - document force_cctx.
527
5284.46 Fri Apr 4 22:05:43 CEST 2008
529 - upgrade libcoro, resulting in pthread-backend (which was only created
530 to fulfill the rules of the programming languages shootout).
531
5324.45 Thu Mar 13 11:55:36 CET 2008
533 - fix a file leaking bug in eg/mhyttpd that would allow
534 downloading of any file (reported by oesi).
535 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
536 (also add testcase).
537 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
538 apparently having loads of fun with that).
539 - implement $state->swap_defsv, ->swap_defav and document ->throw.
540
5414.4 Wed Feb 13 16:44:29 CET 2008
542 - only assume .cfi pseudo isns exist on GNU/Linux.
543 - add get_timed method to Coro::Channels.
544 - fixed Coro::Debug manpage.
545 - perl 5.11 compatbility improvement based on patch by
546 Andreas König.
547
5484.37 Sun Jan 20 11:25:23 CET 2008
549 - soften the check for an active parser for perl 5.10 (avoiding
550 "Coro::State::transfer called while parsing" in many cases).
551
5524.36 Sun Jan 13 10:53:56 CET 2008
553 - reset diehook when terminating from an async_pool as to not
554 trigger any __DIE__ handlers.
555
5564.35 Sun Jan 13 04:14:13 CET 2008
557 - "bt" debug command now displays any exceptions
558 from longmess and also skips the innermost
559 stackframes, giving more useufl output.
560 - allow backtraces in coroutines blocked in Coro::EV,
561 at a <1% speed hit.
562 - handle localising of $SIG{__WARN__} and __DIE__
563 properly (with a proper amount of dirty hacking).
564
5654.34 Sat Dec 22 17:49:53 CET 2007
566 - upgrade to EV version 2.0 API.
567
5684.33 Mon Dec 17 08:36:12 CET 2007
569 - make Coro::AIO etc. loadable in the absence of EV.
570
5714.32 Mon Dec 17 07:46:02 CET 2007
572 - majorly improved Coro::Handle's performance with Coro::EV.
573 - implemented the until now mythical Coro::BDB module.
574 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
575
5764.31 Wed Dec 5 12:32:39 CET 2007
577 - remove warn statement form Coro::Util.
578
5794.3 Tue Dec 4 20:33:14 CET 2007
580 - calls to the idle function could cause stack corruption
581 when the stack changed.
582 - do no longer rely on the presence of EV::DNS if EV is used
583 (because it is gone), but instead take avdantage of EV::ADNS
584 if available.
585 - add ($) prototypes to all functions in Coro::Storable.
586 - use a conventional (safer) idle callback in Coro::EV.
587 - do accept quickly in Coro::Debug to avoid endless loops.
588
5894.22 Fri Nov 30 16:04:04 CET 2007
590 - really use optimised versions for Event and EV in Coro::Util
591 and Coro::Handle.
592
5934.21 Sun Nov 25 10:48:59 CET 2007
594 - fix a spurious memory read.
595 - Coro::EV no longer keeps the eventloop "alive".
596
5974.2 Fri Nov 9 20:47:05 CET 2007
598 - enable/disable tracing from a new coroutine, not a pooled one.
599 - fix a memleak in Coro::Event.
600 - removed killall call from fork_eval.
601 - made sure store_fd is already loaded so that fork_eval
602 does not have to parse autoload in each subprocess.
603 - only use assembly method if -O switch is in $Config{optimize}.
604 - add (optional) Coro::EV module, so far the best event loop module
605 directly supported by Coro.
606 - if the event model is EV, use EV::DNS to resolve
607 stuff in Coro::Util.
608 - don't get confused by multiple event notifications in Coro::Handle.
609 - initial support for EV (libevent interface).
610 - require Event and EV using configure_requires, to force their existance.
611
6124.13 Wed Oct 24 07:26:45 CEST 2007
613 - add Coro::Storable::blocking_thaw.
614 - use a vastly more complicated technique to localise
615 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
616 - use a coroutine for the idle callback Coro::Event,
617 instead of running Event in the current coroutine context.
618 This also catches recursive invocations.
619 - actually report fork errors in gethostbyname and inet_aton.
620
6214.11 Thu Oct 11 02:40:24 CEST 2007
622 - port to threaded perls.
623
6244.1 Thu Oct 11 02:38:16 CEST 2007
625 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
626 be local to each coro (see Coro::State).
627 - incompatible change: for very deep reasons, cede and cede_notself
628 cannot return anything, so nothing will be returned.
629 - possibly bring back 5.10 compatibility (untested).
630 - work around stupid (and wrong) warning on 5.10 :(.
631 - overlay the saved state over the context stack. This saves
632 a few hundred bytes per coroutine on average and also
633 speeds up context switching a bit.
634 - further tune default stack sizes.
635 - (more) correctly calculate stack usage in coro_rss.
636 - Coro::Storable::blocking_* did not properly lock
637 resulting in races between coroutines.
638 - added Coro::Storable::guard.
639 - stopping to trace a coroutine could destroy the cctx of
640 an unrelated coroutine.
641 - explain the relationship between Perl and C coroutines in
642 more detail in Coro::State.
643 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
644 causing a fork per resolve. This also affected Coro::Socket.
645 - switch to a separate stack in $coro->call/eval to avoid
646 invalidating pointers.
647
6484.03 Sat Oct 6 21:24:00 CEST 2007
649 - added Coro::throw method.
650 - minor code cleanups.
651
6524.02 Sat Oct 6 02:36:47 CEST 2007
653 - fix a very minor per-coroutine memleak (a single codereference).
654 - fixed a bug where the currently in-use c context would be freed
655 prematurely (can happen only when programs change the stacksize
656 or use tracing).
657 - tracing can no longer keep a coro alive after it terminated.
658 - do static branch prediction in the common path for gcc. gives
659 about 2-5% speed improvement here.
660
6614.01 Fri Oct 5 22:10:49 CEST 2007
662 - instead of recreating *a* standard output handle we simply
663 use STDOUT, which is faster and hopefully more robust.
664
6654.0 Fri Oct 5 12:56:00 CEST 2007
666 - incompatibly changed Coro::Storable::freeze.
667 - major new feature: added Coro::Debug, for interactive coroutine
668 debugging, tracing and much more.
669 - major bug fix: unbelievable, but true: $_, $/ and many other
670 "saved" variables actually weren't being saved. This has been fixed,
671 of course, while increasing performance while losing all the save
672 flags.
673 - save flags are gone, and all the api functions dealing with them.
674 - added Coro::Semaphore::adjust.
675 - added Coro::Util::fork_eval.
676 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
677 - added Coro::killall.
678 - reduce initial stack sizes to allow for "micro-coroutines".
679 - better async_pool resource management, moved parts of async_pool
680 handling to XS (major speed improvement).
681 - actually croak before modifying important data structures.
682 - refuse to transfer while compiling.
683 - possibly support eval EXPR better now.
684 - enable assembly per default on linux+bsd x86+amd64.
685 - all internal members were renamed _something for easier subclassing.
686 - many minor tweaks.
687
6883.63 Wed May 16 14:10:06 CEST 2007
689 - implement handcoded assembly for x86/amd64 SVR ABI.
690
6913.62 Fri Apr 27 21:36:06 CEST 2007
692 - upgrade libcoro (which might set unwind info correctly).
693 - change default on linux to setjmp/longjmp.
694
6953.61 Thu Apr 19 12:36:18 CEST 2007
696 - Coro::Storable caused an endless loop when thawing invalid
697 pst's sometimes.
698 - use a Semaphore in Coro::Storable, as Storable doesn't
699 seem to be reentrant (although it is documented to
700 be threadsafe...).
701 - fix Coro::Signal to bring back the original unreliable
702 but stateful semantics.
703 - fixed a lot of typos in Coro.pm (patch submitted by David
704 Steinbrunner, which applied flawlessly).
705
7063.6 Sat Apr 14 17:13:31 CEST 2007
707 - added some bugfixes to get eg/myhttpd working again.
708 - added Coro::Storable for often-cede'ing freeze/thaw.
709 - try to do a clean exit when a coroutine calls exit
710 (EXPERIMENTAL).
711 - got rid of indirect call through _coro_init.
712 - updated the partly antique examples in eg/ to
713 work again and be a bit less magic, too.
714 - fixed Coro::Signal semantics to work as documented again.
715
7163.55 Sun Mar 25 01:20:47 CET 2007
717 - add SAVE_DEFFH to save the default filehandle and enable
718 it by default.
719 - finally move socket-operations from Coro::Socket to Coro::Handle
720 to be able to unblock foreign sockets.
721 - add Coro::State::save_also and guarded_save.
722 - add count accessor to Coro::Semaphore.
723 - add Coro::State::cctx_stacksize.
724 - just for the fun of it, do not rely on implicit context,
725 which can dramatically improve performance, but people
726 using windows-process-emulation perls do not care much about
727 performance.
728
7293.51 Sun Mar 4 14:18:04 CET 2007
730 - fixed a problem when you weakened references to Coro::State's
731 (patch by Yuval Kogman).
732
7333.501 Wed Feb 28 12:44:07 CET 2007
734 - rename some global symbols as macosx from hell redefines
735 them without asking.
736
7373.5 Tue Feb 13 20:22:53 CET 2007
738 - do AnyEvent model detection earlier, avoiding problems
739 caused by first using AnyEvent and later Coro::Event.
740 - implement and document Coro::Event event objects.
741 - fix a potential problem in Coro::Event causing crashes.
742 - initialise PL_comppad when creating a new coroutine,
743 avoids crashes on early coro destruction.
744
7453.41 Mon Jan 22 19:19:49 CET 2007
746 - readline on Coro::Handle did not support undefined $/,
747 nor did it deliver partial lines on EOF or error.
748 - implement malloc fallback for stack allocation because
749 stupid broken idiotic OSX has a stupid broken
750 idiotic fits-the-whole-os mmap "implementation" and
751 my dick feels longer if Coro is portable even to
752 obsolete platforms.
753
7543.4 Fri Jan 19 21:52:54 CET 2007
755 - remove t/09_timer.t, as it isn't really testing much
756 but was rather flaky in practise.
757 - async_pool coro would keep arguments and callback alive until
758 it was reused.
759 - cancellation of a coroutine could cause spurious idle calls
760 in cede_notself.
761
7623.3 Sat Jan 6 03:45:00 CET 2007
763 - implement $coro->on_destroy.
764 - Coro::Event blocking semantics have been changed,
765 documented and - hopefully - improved.
766 - fix nice adding, not subtracting, from priority.
767 - fix ->prio and api_is_ready (patch by Mark Hinds).
768 - fixed an assert ("... == prev__cctx->idle_te")
769 that could errronously trigger.
770 - fix various large and small memleaks.
771 - use a (hopefully) more stable cancel implementation
772 that immediately frees the coroutine data.
773 - cede/cede_notself return a status now.
774 - added Coro::guard function.
775 - added a global coroutine pool for jobs (on my machine,
776 I can create and execute 48k simple coros/s with async,
777 and 128k coros with async_pool).
778 - Coro::AIO now uses the coroutine priority as io priority.
779
7803.2 Fri Dec 22 05:07:09 CET 2006
781 - improve portability to slightly older perls.
782 - use cleaner coroutine destruction.
783 - simplify configuration for users.
784 - optionally (unrecommended) prefer perl functions over
785 their coro replacements.
786
7873.11 Tue Dec 5 13:11:24 CET 2006
788 - fixed some bogus assert's, but as perl.h disables assert even
789 without NDEBUG (thank you very much), not too many people should
790 notice (that did include myself). Andreas König noticed, though :)
791 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
792 it. Also noticed by Andreas König :)
793 - save/restore tainted status.
794 - verified to pass the testsuite on my 5.9.5.
795
7963.1 Mon Dec 4 23:03:40 CET 2006
797 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
798 - incompatible change: transfer flags are now per-state.
799 - give a better error message on deadlock.
800 - document Coro::nready.
801 - enhanced testsuite.
802
8033.01 Sun Dec 3 23:47:42 CET 2006
804 - forgot to include Coro::Timer.
805
8063.0 Sun Dec 3 22:57:25 CET 2006
807 - the "FINALLY COMPLETELY STABLE" release (coming soon:
808 the "FAMOUS LAST WORDS" release).
809 - implement a new stack sharing algorithm, which uses a stack
810 pool (size currently hardcoded).
811 - make stack sharing mandatory (it no longer uses a heuristic).
812 - eval/die no longer cause weird problems under heavy use.
813 - Coro::Event could cause livelocks if it was used but
814 no Coro::Event watchers were used.
815 - Coro::Event now uses asynccheck as prepare does not
816 check for changed watchers.
817 - Coro::Event allows multiple waiting coros and will wake up one
818 per event.
819 - Coro::Event should be cleaner and more efficient now.
820 - new utility function Coro::unblock_sub.
821 - document the sad fact that Event is no longer reentrant.
822 - putting a coroutine into the ready queue twice could under
823 some circumstances lead to stack corruption.
824 - minor incompatibility: subclassing Coro::State is supported
825 directly now without going through a _coro_state member.
826 - state/coro switching is much faster now.
827 - very minor optimisations and code/documentation cleanup.
828 - avoid problems due to compiler inlining.
829 - removed timers from Coro::Timer -> use AnyEvent instead.
830 - replaced Coro::idle coroutine by (cleaner) idle handler.
831 - updated to newest libcoro.
832 - implement enhanced support for valgrind.
833 - implement is_ready and return value for ready.
834 - removed Coro::Cont, it was a misnomer (it's generators),
835 and it was somewhat annoying to get it right. Will come back
836 if somebody asks for it :)
837 - many ->wait methods and Coro::Event could return
838 spuriously without the event having happened.
839
8402.5 Tue Nov 7 12:22:33 CET 2006
841 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
842 use AnyEvent, moved them to Coro/.
843 - added Coro::LWP which contains all the uglyness required to
844 make LWP non-blocking.
845 - should work with perl 5.9.x now (Andreas König made me do it).
846 - fixed another bug in Coro::Select when the timeout was undef.
847 - reuse PL_start_env for all coros, saves some memory per coroutine.
848 - manage PL_top_env differently, hopefully to avoid panic: top_env.
849 - timeout argument was not properly used in Coro::Socket.
850 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
851 - emulate undocumented(!) functionality of IO::Socket required
852 by LWP(!!).
853 - updated eg/lwp to work with newer lwp's.
854 - remove "FATAL: uncaught exception" prefix. Coroutines that die
855 kill the whole process, just as exceptions in the main "coroutine"
856 did already.
857
8582.1 Wed Nov 1 23:01:13 CET 2006
859 - fix a long-standing bug in Coro::Select where select with
860 zero timeout would instead change the current default filehandle.
861 - use a simpler and hopefully more robust way to clone padlists
862 (uses less memory and a perl function instead of our own).
863 - coro can now create a stack guard area on many architectures.
864 - Coro::AIO properly reexports additional functions from IO::AIO.
865 - updated libcoro with a workaround for OS X,
866 pach and testing by Michael Schwern.
867
8682.0 Tue Oct 24 05:47:17 CEST 2006
869 - support additional aio requests in Coro::AIO.
870
8711.9 (never properly released due to a glitch)
872
8731.8 Thu Feb 2 00:59:06 CET 2006
874 - applied suggested patch by SAMV to avoid problems during stupid
875 mark & sweep gc run.
876 - applied patch by Scott Walters for 5.9.3 compatibility.
877
8781.7 Tue Dec 27 01:41:58 CET 2005
879 - added Coro::AIO, a thin wrapper around IO::AIO.
880 - improved Makefile.PL explanations.
881
8821.6 Mon Dec 12 21:30:05 CET 2005
883 - additionally save PM_curpm might fix as-of-yet
884 unseen problems with regex matches being attributed to the
885 wrong package.
886 - add t/10_bugs.t, which currently checks against imho broken
887 perls that use 0.26MB of stack space per Perl_magic_get
888 invocation (newer linuxes) as opposed to the 0.0002MB perl
889 normally uses.
890 - make stacksize configurable for the ultimate debian experience.
891
8921.51 Mon Dec 12 18:48:36 CET 2005
893 - remove debugging warn() accidentally left in Coro::Select.
894
8951.5 Tue Nov 29 13:32:44 CET 2005
896 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
897 - fix Coro::Select 'select'.
898 - strict'ify some modules.
899 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
900 - use XSLoader in selected modules.
901 - remove some 5.6 compatibility cruft.
902
9031.4 Tue Sep 6 00:11:05 CEST 2005
904 - libcoro did not take into account the trampoline on amd64,
905 when 'l'inux method was used.
906
9071.31 Tue Aug 30 23:31:33 CEST 2005
908 - some portability fixes/workarounds.
909
9101.3 Sat Aug 20 03:08:56 CEST 2005
911 - no code changes. module seems to work fine.
912 - improve Coro::State docs, remove reference to nonexisting
913 Coro::State::flush method.
914 - no longer autodetect windows, present it as an option instead.
915
9161.2 Mon May 16 02:00:55 CEST 2005
917 - included libcoro.c earlier in State.xs, might improve portability.
918 - use a faster and possibly more stable Coro::Cont implementation.
919 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
920 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
921 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
922
9231.11 Thu Mar 3 18:00:52 CET 2005
924 - change of contact address.
925
9261.1 Tue Feb 22 20:51:16 CET 2005
927 - support [l]inux method on amd64.
928 - allow some context switches while compiling/eval'ing.
929
9301.0 Tue Aug 10 03:47:27 CEST 2004
4 - Event 0.89 fixes the bug again. 931 - Event 0.89 fixes the bug again.
932 - fix the remaining(??) memleak. I didn't free the cache-AV for
933 padlists, so one AV per created anon-sub leaked.
5 934
60.97 Fri May 14 15:23:32 CEST 2004 9350.97 Fri May 14 15:23:32 CEST 2004
7 - remove stupid gcc extension that was an experiment only anyway. 936 - remove stupid gcc extension that was an experiment only anyway.
8 937
90.96 Thu May 13 18:09:29 CEST 2004 9380.96 Thu May 13 18:09:29 CEST 2004
10 - tell people if they have yet anothe rbroken Event variant. 939 - tell people if they have yet another broken Event variant.
11 - made Coro to work _better_ with threads (it seems that, as long 940 - made Coro to work _better_ with threads (it seems that, as long
12 as you use Coros in one thread only everything will work fine. 941 as you use Coros in one thread only everything will work fine.
13 Looking at the perl source the problem might be missing locking 942 Looking at the perl source the problem might be missing locking
14 between Coro and some perl internal routines. That's not easily 943 between Coro and some perl internal routines. That's not easily
15 fixable). 944 fixable).

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