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Comparing Coro/Changes (file contents):
Revision 1.143 by root, Mon Nov 6 19:26:10 2006 UTC vs.
Revision 1.567 by root, Sun May 22 20:13:33 2011 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
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
385.372 Wed Feb 23 06:14:30 CET 2011
39 - apparently mingw doesn't provide a working gettimeofday, try to
40 work around that by relying on Time::HiRes (indirectly brought to
41 my attention by Max Maischein).
42 - fix some portability issues when Time::HiRes was used.
43
445.371 Mon Feb 21 14:36:08 CET 2011
45 - backport to windows process emulation code again.
46
475.37 Sat Feb 19 07:49:44 CET 2011
48 - add a big "Coro thread life cycle" section to "man Coro".
49 - try a tentative workaround against the breakage that 5.13 has
50 introduced without depreciation period. sigh.
51 - no longer use Time::HiRes if gettimeofday is available, which
52 saves quite a lot of memory.
53
545.36 Sun Feb 13 05:33:41 CET 2011
55 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
56 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
57 method call.
58 - undocument Coro::Timer::sleep and obsolete whole module.
59 - optimise Coro::Timer::timeout memory and cpu usage.
60 - slightly updated Coro::Intro for recent changes.
61 - do not initialise PL_dirty anymore.
62
635.25 Thu Nov 11 01:08:39 CET 2010
64 - try a different approach on netbsd - netbsd 5 finally has marginally
65 working pthreads, but still broken ucontext/sigaltstack.
66 - openbsd 4.8 finally got their act together, Coro works out of the box
67 with asm, setjmp and pthreads (no change, just informational).
68
695.24 Sat Oct 23 11:27:12 CEST 2010
70 - port to the EV 4.0 API.
71 - work around bugs in mingw32, making strawberry perl work
72 out of the box.
73 - correctly modify Coro::AIO function prototypes
74 so that they reflect the "no optional parameters" rule.
75 - "ported" libcoro to C++.
76
775.23 Mon May 17 18:50:42 CEST 2010
78 - be more resistant to ordering changes when initialising
79 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
80 Waldorf).
81 - document that perl 5.12 deliberately removed support for cloning.
82
835.22 Wed Apr 14 03:55:35 CEST 2010
84 - correctly return udnef on errors in Coro::Handle::read/write
85 (testcase by Marc Mims).
86 - convert Coro::Util into a "perl compatibility wrapper" - the functions
87 are less useful now, but are drop-in replacements for existing
88 functions, listing better alternatives in the documentation. This also
89 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
90 with Coro::Util::inet_aton.
91 - do not override $Coro::idle unconditionally in Coro.pm, as other
92 modules could have provided their own idle coro already
93 (for exmaple, Coro::AnyEvent).
94 - fix Coro::Util::gethost* functions.
95 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
96
975.21 Wed Dec 16 07:19:51 CET 2009
98 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
99 together.
100 - add some examples on how to combine other event loops with Coro in
101 Coro::AnyEvent, and how to run it (and not to block). Seems to be
102 the most common source of confusion.
103 - try to catch people naively blocking in an event callback.
104 - work around the perl filehandle bug issue in conjunction with
105 older common::sense (as indirectly pointed out by ZSystem).
106 - clarify the "not from signal handlers" section.
107
1085.2 Sun Oct 4 14:54:24 CEST 2009
109 - Coro::Storable destroyed the prototypes of the functions it wrapped.
110 - export rouse_cb and rouse_wait by default now.
111 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
112 - new method $state->swap_sv.
113 - added section on "windows process emulation" to the manpage,
114 after a not-so-fruitful (nor-friendly) "discussion" with chip
115 salzenberg (discussion implies arguments, but his only arguments
116 were ad-hominems, one wonders why he started it in the first
117 place). I hope this explains it well enough for him to understand,
118 and maybe well enough for others to understand.
119 - use common::sense everywhere now.
120 - idle callbacks are no longer supported, use idle coros instead.
121 - print a thread listing when a deadlock is detected.
122
1235.17 Sat Aug 22 23:09:31 CEST 2009
124 - work around a bug in the perl debugger causing crashes
125 when running under the debugger by marking _pool_handler as nodebug.
126 - speed up Coro::async considerably.
127 - try some hacks to get netbsd to work "more often" - their broken
128 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
129 - convert Coro to AE 5.0 API.
130
1315.162 Tue Jul 28 04:04:03 CEST 2009
132 - perl 5.8.2 is now minimum requirement.
133 - skip t/19_handle.t on broken windows perls.
134
1355.161 Wed Jul 22 04:47:38 CEST 2009
136 - Coro::AnyEvent::poll could have a different prototype when EV was
137 used as backend (analyzed by Tatsuhiko Miyagawa).
138 - Coro::AnyEvent errornously initialised the event loop when loaded,
139 not on demand.
140 - try to workaround rare */t/01_unblock.t failures.
141
1425.16 Tue Jul 21 01:44:37 CEST 2009
143 - Coro::AnyEvent failed to hook into the event loop
144 when no threads had been readied between detecting
145 the event loop and actually running it.
146 - considerably speed up Coro::Select by taking avdantage
147 of AnyEvent > 4.8 and some other optimisations.
148 - implement paragraph readline mode in Coro::Handle
149 (based on patches by Zsbán Ambrus).
150 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
151 and analyzed by Yasuhiro MATSUMOTO).
152 - clarified libcoro license and copyright.
153 - someone stole my EXTRA_META!!!
154 - implement Coro::Select::patch_pp_sselect and it's brother,
155 for hardcode select overriding.
156
1575.151 Mon Jul 6 05:41:57 CEST 2009
158 - backport to windows process emulation code again (patch by
159 Yasuhiro MATSUMOTO).
160 - slightly update Coro::MakeMaker.
161
1625.15 Tue Jun 30 10:28:06 CEST 2009
163 - deprecate Coro::Socket, document how to get ipv6 support via
164 AnyEvent::Socket instead.
165 - implement signal->wait ($cb) interface, similar to semaphores.
166 - work around SvOK not supporting getmagic, so we have to getmagic
167 to test for undef :/ (reported by Matthias Waldorf).
168 - load Coro::AnyEvent in all modules using AnyEvent.
169 - work around perl corrupting our internal data structures,
170 reported by Tokuhiro Matsuno.
171 - enable per-coroutine real and cpu time gathering
172 (Coro::State::enable_times).
173
1745.14 Wed Jun 24 01:37:48 CEST 2009
175 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
176 as this seems to have been a difficult concept (poll, sleep, idle,
177 idle_upto).
178 - add Coro::AnyEvent::readable/writable functions.
179 - clarify Coro::EV/Event/AnyEvent manpages.
180 - free per-thread global scalars in the thread calling ->cancel, to
181 avoid crashes when $_, $@ etc., are magical but some of those
182 had already been freed.
183 - "unexperimentalise" the callback interface for Coro::Semaphore.
184 - speed up ready queue management/context switching by using a linked
185 list instead of an array (~5-10%).
186 - implement "watch" command in Coro::Debug shells.
187 - for fun, implement time-slicing as an example in the manpage.
188 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
189 Coro::Event, use the normal AnyEvent handling instead of dieing
190 (the same is true for Coro::Handle).
191 - properly document Coro::EV::timed_io_once.
192 - avoid unneccessary ->cancel calls in Coro::Handle.
193 - maybe make it work on mingw32 with win32 backend
194 (based on patch by Yasuhiro Matsumoto).
195
1965.132 Fri May 29 09:00:39 CEST 2009
197 - do not keep a reference to the argument itself in
198 Coro::Semaphore::guard, as it could change later.
199 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
200 should support a prepare callback.
201
2025.131 Mon Mar 16 23:20:37 CET 2009
203 - implement and document Coro->suspend, Coro->resume.
204 - fix Coro::Select implementation to not (often) close
205 the passed file descriptors (testcase provided by pippijn).
206
2075.13 Mon Dec 15 21:51:42 CET 2008
208 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
209 - don't set diehook to C<undef> but instead to NULL, to avoid
210 spurious warnings.
211 - fix a lot of bugs in Coro::SemaphoreSet.
212 - Coro::SemaphoreSet will less often create a semaphore needlessly.
213 - add Coro::SemaphoreSet::count and wait methods.
214 - take advantage of the new Guard module.
215 - deprecate Coro::guard.
216 - try to fix the dreaded 01_unblock tests once more. I hate it when
217 testsuites need more fixing than the code they are supposed to test.
218 - croak in more cases when a required callback isn't resolvable.
219 - fix some minor issues in Coro::State->call/eval.
220 - use current coroutine context instead of a temporary one
221 when temporarily switching to another coroutine.
222 - do not call C-level on_destroy handlers during global destruction,
223 to avoid needless segfaults.
224
2255.12 Sun Dec 7 13:30:38 CET 2008
226 - add default config for MirOS, which seems to be a bug-to-bug
227 compatible fork of openbsd ("world domination by releasing
228 openbsd cvs before the openbsd folks do it" or so :).
229 - free_padlist did destroy the names pad, not good, but didn't
230 seem to bother perl - this could fix issues such as eval ""
231 inside a function called from multiple coroutines.
232 - use a different method to detect destruction time.
233 - be more careful when freeing padlists just before global
234 destruction.
235 - fixed and expanded the call/cc example.
236 - renamed _terminate to _coro_run.
237 - new method Coro::Channel->shutdown.
238 - try pthreads on openbsd <4.4 (broken sigaltstack, will
239 pthreads fare better?).
240 - be less picky about destroying "a" running coroutine.
241
2425.11 Tue Nov 25 21:49:05 CET 2008
243 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
244 working code with failed assertions, introducing more bugs than
245 it fixes, requiring elaborate workarounds :(
246
2475.1 Mon Nov 24 08:54:59 CET 2008
248 - wrote a small introductory tutorial - Coro::Intro.
249 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
250 - Coro::Select did errornously dup the file descriptors
251 and didn't work with all AnyEvent backends.
252 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
253 LWP data transfers.
254 - disassociate c contexts from coro objects - this is agruably more
255 correct, but mostly allows sharing of cctxs between coro and state
256 objects, for added memory savings and speed increases.
257 - bumped $Coro::POOL_RSS up to 32kb by default.
258 - no longer set the optype to OP_CUSTOM, as B::* understandably
259 doesn't like this very much (and we *are* a type of entersub).
260 - implement state cloning, just to prove that call/cc can be done.
261 - automatically load Coro::AnyEvent in Coro::Handle.
262 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
263 do not have this method (and don't need it either).
264 - speed up generic anyevent methods in Coro::Handle by using rouse
265 callbacks.
266 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
267 others. It also makes the debugger happier, as you can trace
268 through the idle threads now.
269 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
270 - eg/event was pretty broken.
271 - better 5.8.6 compatibility.
272
2735.0 Thu Nov 20 10:35:05 CET 2008
274 - NEW ARCHITECTURE: use the latest 4.x version if you experience
275 stability issues.
276 - bump API version to 7 - all dependents must be recompiled.
277 - removed timed_* functions - they were not being used anyways
278 and should be replaced by a more generic mechanism -
279 and were annoying to support anyways :)
280 - removed SemaphoreSet's waiter method - use sem method instead.
281 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
282 - async_pool did free a scalar value twice
283 ("Attempt to unreference...").
284 - fix a longstanding bug where calling terminate on a coro that
285 was waiting for a semaphore that was just becoming available
286 would cause a deadlock (semaphore would get into a state where
287 it was available but waiters were still blocked).
288 - calling throw on a coroutine that is waiting for a semaphore will
289 no longer make it acquire the semaphore (and thus leak a count).
290 - perl's process emulation is now not even theoretically supported
291 anymore.
292 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
293 conversion of callback-style to blocking-style.
294 - new methods $coro->schedule_to and ->cede_to, to specifically
295 schedule or cede to a specific coroutine.
296 - new function Coro::Semaphore::wait.
297 - use named constants in Coro::Channel (Richard Hundt).
298 - directly patch the entersub opcode calling SLF functions (cede,
299 transfer and so on). this does speed up context switching, but
300 more importanly, it frees us from the hardcoded behaviour of
301 entersub, so we might actually be able to return something from
302 those functions and atcually create new ones.
303 - take advantage of __builtin_frame_address on gcc.
304 - expose THX in coroapi (not sure whether this was a wise decision,
305 as "threaded" perls are running at half speed anyways).
306 - implement execute_slf (schedule-like-function) interface that makes
307 it possible to implement schedule-like-functions in XS.
308 - use new SLF interface to massively speed up Coro::EV by roughly a
309 factor of two.
310 - used new SLF interface to massively speed up Coro::Semaphore by a
311 factor of three.
312 - used new SLF interface to speed up Coro::AIO by roughly a factor of
313 four and reduce its memory usage considerably.
314 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
315 for a nice speedup and vastly more correct behaviour. Also implement
316 a new method "sem" to get at the underlying semaphore object.
317 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
318 (in comparison) 20-40% speedup.
319 - used new SLF interface to reimplement Coro::Signal gaining
320 some unknown (because I was too lazy), but certain, speedup, and also
321 making signals reliable for the first time.
322 - used new SLF interface and other optimisations to speed up async_pool
323 by a factor of two. It also doesn't rely on perl's exception mechanism
324 to exit anymore. The overhead for terminating an async_pool, coro over
325 a normal async is now very small.
326 - sped up coroutine creation/destruction by 40%.
327 - forgot to include Coro/libcoro/README in the dist for all these years.
328 - work around a freebsd pthreads bug (manual testcancel is required as
329 pthread_cond_wait isn't a cancellation point on freebsd).
330 - use new rouse functions to speed up and simplify Coro::BDB.
331 - make "prefer perl native functions" work with threaded perls.
332 - condense Coro::Debug ps output, hint at v and w flags.
333 - (libcoro) lots of minor cleanups and portability improvements.
334
3354.914 Wed Nov 19 12:54:18 CET 2008
336 - fix a disastrous bug in the readline optimisation
337 introduced in 4.801.
338
3394.913 Sat Nov 15 07:58:28 CET 2008
340 - async_pool did free a scalar value twice
341 ("Attempt to unreference...").
342
3434.912 Thu Nov 13 18:31:23 CET 2008
344 - minor cleanups.
345 - use much larger stacks on linux and perl < 5.8.8.
346 - Coro::Debug::new_unix_server did not unlink the socket
347 when destroyed.
348
3494.911 Tue Nov 11 04:26:17 CET 2008
350 - "port" to threaded perls.
351
3524.91 Mon Nov 10 05:36:38 CET 2008
353 - the ->throw exception object no longer leaks.
354 - creating a new cctx leaked a scopestack entry (memleak).
355 - new coroutines didn't get created with a zero flags field
356 (unknown impact).
357 - calling ->throw on a not-yet-started coroutine should now work
358 instead of being ignored.
359 - ->throw is now supported on Coro::State objects.
360 - clean up cctx creation code a bit.
361 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
362
3634.9 Sat Nov 8 17:45:27 CET 2008
364 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
365 - (libcoro) no longer leak threads in the experimental pthread backend,
366 also speed it up considerably.
367 - (libcoro) do not rely on makecontext passing void *'s unscathed.
368 - fix compiletime dependencies on libcoro in the Makefile.
369 - cctx_count wasn't always updated properly.
370 - Coro::State::cctx_stacksize wasn't applied correctly.
371 - new function Coro::State::cctx_max_idle.
372 - the default max number of idle C contexts is now 4.
373 - (libcoro) try harder to get _setjmp/_longjmp.
374 - (libcoro) cleanup and extend the libcoro API to officially
375 allow the creation of empty source contexts.
376 - very experimental workaround for the totally broken netbsd platform.
377 - tried to hack around openbsd bugs.
378
3794.804 Wed Nov 5 16:36:00 CET 2008
380 - Coro::Debug::new_unix_server would not create a non-blocking listening
381 socket, sometimes causing freezes.
382 - (libcoro) fix misaligned stack points for setjmp and assembly
383 methods, which can cause crashes on x86/x86_64 with a sufficiently
384 aggressive compiler.
385 - new function: Coro::Debug::new_tcp_server.
386 - move ->throw into the Coro class because it only works on coro objects.
387
3884.803 Mon Nov 3 17:16:12 CET 2008
389 - (libcoro) use a global asm statement to become independent of gcc
390 otpimisations for CORO_ASM (thanks to pippijn for the idea).
391 - try to workaround yet another broken bsd, this time dragonfly.
392
3934.802 Thu Oct 30 10:56:12 CET 2008
394 - support -fno-omit-frame-pointer on x86 with the assembly method.
395 - tune 01_unblock.t tests a bit.
396
3974.801 Wed Oct 22 18:33:37 CEST 2008
398 - improve readline speed for very long "lines".
399 - backport to 5.8.8.
400
4014.8 Thu Oct 2 13:34:40 CEST 2008
402 - new function Coro::AIO::aio_wait.
403 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
404 - greatly speed up and reduce memory usage of Coro::AIO requests.
405 - implement some other µ-optimisations.
406
4074.749 Mon Sep 29 14:40:12 CEST 2008
408 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
409
4104.748 Sat Sep 27 14:03:19 CEST 2008
411 - implement, but do not document, PerlIO::cede(granularity).
412 - Coro::Storable forgot to wrap Storable::pstore.
413 - work around the multitude of leaks and memory corruption
414 bugs in PerlIO::via by using our own C-level perliol. As a side
415 effect, Coro::Storable is now much, much, much faster.
416
4174.747 Tue Sep 23 01:59:41 CEST 2008
418 - fix a per-cv memleak (one empty array was leaked per
419 code reference).
420 - avoid a crash in coro->call|rss when the coroutine was already
421 destroyed (most noticably when using Coro::Debug::ps :)
422 - also protect *Storable::FILE.
423 - push up default storable granularity to 20ms.
424
4254.746 Sun Sep 21 03:22:20 CEST 2008
426 - be more insistent on locking Storable against reentrancy
427 in Coro::Storable.
428 - move swap_def?v and throw to Coro::State, as documented.
429
4304.745 Thu Jul 24 00:14:38 CEST 2008
431 - remove debugging code related to MgPV_nolen_const, also try to
432 make it compile with perl 5.8.6 (yes, apple apparently loves
433 outdated software). Reported by John S.
434
4354.744 Tue Jul 8 22:06:35 CEST 2008
436 - correctly provide default DIE/WARN handlers as documented.
437 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
438 implementations inside perl work fine for us.
439
4404.743 Mon Jun 16 00:21:57 CEST 2008
441 - when using Coro::EV without running EV::loop it could
442 result in busy-waiting for events, this has been fixed.
443 - reduce codesize and improve performance by using EV_DEFAULT_UC.
444
4454.742 Sat May 31 14:10:21 CEST 2008
446 - implement a workaround for (some) perl <5.8.8 versions.
447 - require EV 3.3+.
448
4494.741 Fri May 30 23:33:09 CEST 2008
450 - tell netbsd how utterly broken their imitation of an OS is
451 and refuse to build by default if pthreads are in use.
452 - switch to "s" method on all bsd's by default, as their ucontext
453 stuff seems just too broken.
454 - fix a bug in Coro::Select.
455
4564.74 Thu May 29 20:05:31 CEST 2008
457 - do not test Coro::LWP for lack of dependencies.
458 - do not test Coro::Select for lack of working perls.
459
4604.73 Thu May 29 2008
461 - fix a bug in Coro::EV which would cause it to block despite
462 there being runnable coroutines.
463 - sprinkle "no warnings" freely over everything, also suppress
464 warnings for some other modules.
465 - fix typo in WSAEWOULDBLOCK.
466
4674.72 Sun May 25 05:14:36 CEST 2008
468 - tweak META.yaml a bit, unfortunately, there is no documented way
469 to have optional dependencies with CPAN. doh :(
470 - avoid running some tests on windows because they would fail due to
471 perl bug (broken fork, broken pipes...).
472 - work around perl on windows bugs where perl returns undocumented
473 error codes for sysread, syswrite etc. by taking advantage
474 of AnyEvent's workaround for that problem.
475 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
476 a common perl implementation bug on windows.
477 - use unix domain sockets in testsuite to work around
478 common perl implementation bugs on widows (they are emulated by
479 tcp sockets on windows. ugh.)
480
4814.71 Sat May 24 20:01:27 CEST 2008
482 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
483 - take advantage of async name resolution of AnyEvent::Util.
484 - work around brutal inet_aton override in Coro::LWP.
485 - take advantage of the readyhook in Coro::EV, for smoother
486 scheduling.
487
4884.7 Sun May 11 00:32:19 CEST 2008
489 - completely reworked the Coro manpage.
490 - added Coro::AnyEvent, generic event loop integration.
491 - implement cancel, ready and kill commands in Coro::Debug.
492 - document find_coro in Coro::Debug.
493 - incompatible change: rename has_stack to has_cctx.
494 - Coro::AIO and Coro::BDB no longer force event model detection,
495 use AnyEvent::AIO and AnyEvent::BDB.
496
4974.6 Sat Apr 26 10:05:14 CEST 2008
498 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
499 by the Coro module. It was a mistake to have it in the first place.
500 - (experimental) support for activestate perl 5.10 (method "w").
501 - (experimental) support for strawberry perl (method "a").
502 - coro_sigelem_set did not return a value although it had to,
503 actual impact unknown.
504
5054.51 Mon Apr 14 13:28:27 CEST 2008
506 - make it compile again on 5.8.
507
5084.50 Thu Apr 10 09:43:17 CEST 2008
509 - I did it twice! (see 4.49).
510
5114.49 Sun Apr 6 21:23:31 CEST 2008
512 - grr, instead of compiling the recent changes on 5.10 only they
513 were compiled on 5.8 only.
514
5154.48 Sun Apr 6 20:36:46 CEST 2008
516 - allow coroutine switches during eval's under 5.10.x, as it seems
517 the parser is a per-interpreter option now, so this is safe
518 (this might fix the odd crashing bug).
519 - drop support for 5.9.x versions: they are dead, jim.
520
5214.47 Sun Apr 6 00:37:52 CEST 2008
522 - force cctx allocation on API calls: we know we need to force one
523 and gcc actually manages to confuse our heuristic nowadays,
524 leading to crashes and worse.
525 - document force_cctx.
526
5274.46 Fri Apr 4 22:05:43 CEST 2008
528 - upgrade libcoro, resulting in pthread-backend (which was only created
529 to fulfill the rules of the programming languages shootout).
530
5314.45 Thu Mar 13 11:55:36 CET 2008
532 - fix a file leaking bug in eg/mhyttpd that would allow
533 downloading of any file (reported by oesi).
534 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
535 (also add testcase).
536 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
537 apparently having loads of fun with that).
538 - implement $state->swap_defsv, ->swap_defav and document ->throw.
539
5404.4 Wed Feb 13 16:44:29 CET 2008
541 - only assume .cfi pseudo isns exist on GNU/Linux.
542 - add get_timed method to Coro::Channels.
543 - fixed Coro::Debug manpage.
544 - perl 5.11 compatbility improvement based on patch by
545 Andreas König.
546
5474.37 Sun Jan 20 11:25:23 CET 2008
548 - soften the check for an active parser for perl 5.10 (avoiding
549 "Coro::State::transfer called while parsing" in many cases).
550
5514.36 Sun Jan 13 10:53:56 CET 2008
552 - reset diehook when terminating from an async_pool as to not
553 trigger any __DIE__ handlers.
554
5554.35 Sun Jan 13 04:14:13 CET 2008
556 - "bt" debug command now displays any exceptions
557 from longmess and also skips the innermost
558 stackframes, giving more useufl output.
559 - allow backtraces in coroutines blocked in Coro::EV,
560 at a <1% speed hit.
561 - handle localising of $SIG{__WARN__} and __DIE__
562 properly (with a proper amount of dirty hacking).
563
5644.34 Sat Dec 22 17:49:53 CET 2007
565 - upgrade to EV version 2.0 API.
566
5674.33 Mon Dec 17 08:36:12 CET 2007
568 - make Coro::AIO etc. loadable in the absence of EV.
569
5704.32 Mon Dec 17 07:46:02 CET 2007
571 - majorly improved Coro::Handle's performance with Coro::EV.
572 - implemented the until now mythical Coro::BDB module.
573 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
574
5754.31 Wed Dec 5 12:32:39 CET 2007
576 - remove warn statement form Coro::Util.
577
5784.3 Tue Dec 4 20:33:14 CET 2007
579 - calls to the idle function could cause stack corruption
580 when the stack changed.
581 - do no longer rely on the presence of EV::DNS if EV is used
582 (because it is gone), but instead take avdantage of EV::ADNS
583 if available.
584 - add ($) prototypes to all functions in Coro::Storable.
585 - use a conventional (safer) idle callback in Coro::EV.
586 - do accept quickly in Coro::Debug to avoid endless loops.
587
5884.22 Fri Nov 30 16:04:04 CET 2007
589 - really use optimised versions for Event and EV in Coro::Util
590 and Coro::Handle.
591
5924.21 Sun Nov 25 10:48:59 CET 2007
593 - fix a spurious memory read.
594 - Coro::EV no longer keeps the eventloop "alive".
595
5964.2 Fri Nov 9 20:47:05 CET 2007
597 - enable/disable tracing from a new coroutine, not a pooled one.
598 - fix a memleak in Coro::Event.
599 - removed killall call from fork_eval.
600 - made sure store_fd is already loaded so that fork_eval
601 does not have to parse autoload in each subprocess.
602 - only use assembly method if -O switch is in $Config{optimize}.
603 - add (optional) Coro::EV module, so far the best event loop module
604 directly supported by Coro.
605 - if the event model is EV, use EV::DNS to resolve
606 stuff in Coro::Util.
607 - don't get confused by multiple event notifications in Coro::Handle.
608 - initial support for EV (libevent interface).
609 - require Event and EV using configure_requires, to force their existance.
610
6114.13 Wed Oct 24 07:26:45 CEST 2007
612 - add Coro::Storable::blocking_thaw.
613 - use a vastly more complicated technique to localise
614 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
615 - use a coroutine for the idle callback Coro::Event,
616 instead of running Event in the current coroutine context.
617 This also catches recursive invocations.
618 - actually report fork errors in gethostbyname and inet_aton.
619
6204.11 Thu Oct 11 02:40:24 CEST 2007
621 - port to threaded perls.
622
6234.1 Thu Oct 11 02:38:16 CEST 2007
624 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
625 be local to each coro (see Coro::State).
626 - incompatible change: for very deep reasons, cede and cede_notself
627 cannot return anything, so nothing will be returned.
628 - possibly bring back 5.10 compatibility (untested).
629 - work around stupid (and wrong) warning on 5.10 :(.
630 - overlay the saved state over the context stack. This saves
631 a few hundred bytes per coroutine on average and also
632 speeds up context switching a bit.
633 - further tune default stack sizes.
634 - (more) correctly calculate stack usage in coro_rss.
635 - Coro::Storable::blocking_* did not properly lock
636 resulting in races between coroutines.
637 - added Coro::Storable::guard.
638 - stopping to trace a coroutine could destroy the cctx of
639 an unrelated coroutine.
640 - explain the relationship between Perl and C coroutines in
641 more detail in Coro::State.
642 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
643 causing a fork per resolve. This also affected Coro::Socket.
644 - switch to a separate stack in $coro->call/eval to avoid
645 invalidating pointers.
646
6474.03 Sat Oct 6 21:24:00 CEST 2007
648 - added Coro::throw method.
649 - minor code cleanups.
650
6514.02 Sat Oct 6 02:36:47 CEST 2007
652 - fix a very minor per-coroutine memleak (a single codereference).
653 - fixed a bug where the currently in-use c context would be freed
654 prematurely (can happen only when programs change the stacksize
655 or use tracing).
656 - tracing can no longer keep a coro alive after it terminated.
657 - do static branch prediction in the common path for gcc. gives
658 about 2-5% speed improvement here.
659
6604.01 Fri Oct 5 22:10:49 CEST 2007
661 - instead of recreating *a* standard output handle we simply
662 use STDOUT, which is faster and hopefully more robust.
663
6644.0 Fri Oct 5 12:56:00 CEST 2007
665 - incompatibly changed Coro::Storable::freeze.
666 - major new feature: added Coro::Debug, for interactive coroutine
667 debugging, tracing and much more.
668 - major bug fix: unbelievable, but true: $_, $/ and many other
669 "saved" variables actually weren't being saved. This has been fixed,
670 of course, while increasing performance while losing all the save
671 flags.
672 - save flags are gone, and all the api functions dealing with them.
673 - added Coro::Semaphore::adjust.
674 - added Coro::Util::fork_eval.
675 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
676 - added Coro::killall.
677 - reduce initial stack sizes to allow for "micro-coroutines".
678 - better async_pool resource management, moved parts of async_pool
679 handling to XS (major speed improvement).
680 - actually croak before modifying important data structures.
681 - refuse to transfer while compiling.
682 - possibly support eval EXPR better now.
683 - enable assembly per default on linux+bsd x86+amd64.
684 - all internal members were renamed _something for easier subclassing.
685 - many minor tweaks.
686
6873.63 Wed May 16 14:10:06 CEST 2007
688 - implement handcoded assembly for x86/amd64 SVR ABI.
689
6903.62 Fri Apr 27 21:36:06 CEST 2007
691 - upgrade libcoro (which might set unwind info correctly).
692 - change default on linux to setjmp/longjmp.
693
6943.61 Thu Apr 19 12:36:18 CEST 2007
695 - Coro::Storable caused an endless loop when thawing invalid
696 pst's sometimes.
697 - use a Semaphore in Coro::Storable, as Storable doesn't
698 seem to be reentrant (although it is documented to
699 be threadsafe...).
700 - fix Coro::Signal to bring back the original unreliable
701 but stateful semantics.
702 - fixed a lot of typos in Coro.pm (patch submitted by David
703 Steinbrunner, which applied flawlessly).
704
7053.6 Sat Apr 14 17:13:31 CEST 2007
706 - added some bugfixes to get eg/myhttpd working again.
707 - added Coro::Storable for often-cede'ing freeze/thaw.
708 - try to do a clean exit when a coroutine calls exit
709 (EXPERIMENTAL).
710 - got rid of indirect call through _coro_init.
711 - updated the partly antique examples in eg/ to
712 work again and be a bit less magic, too.
713 - fixed Coro::Signal semantics to work as documented again.
714
7153.55 Sun Mar 25 01:20:47 CET 2007
716 - add SAVE_DEFFH to save the default filehandle and enable
717 it by default.
718 - finally move socket-operations from Coro::Socket to Coro::Handle
719 to be able to unblock foreign sockets.
720 - add Coro::State::save_also and guarded_save.
721 - add count accessor to Coro::Semaphore.
722 - add Coro::State::cctx_stacksize.
723 - just for the fun of it, do not rely on implicit context,
724 which can dramatically improve performance, but people
725 using windows-process-emulation perls do not care much about
726 performance.
727
7283.51 Sun Mar 4 14:18:04 CET 2007
729 - fixed a problem when you weakened references to Coro::State's
730 (patch by Yuval Kogman).
731
7323.501 Wed Feb 28 12:44:07 CET 2007
733 - rename some global symbols as macosx from hell redefines
734 them without asking.
735
7363.5 Tue Feb 13 20:22:53 CET 2007
737 - do AnyEvent model detection earlier, avoiding problems
738 caused by first using AnyEvent and later Coro::Event.
739 - implement and document Coro::Event event objects.
740 - fix a potential problem in Coro::Event causing crashes.
741 - initialise PL_comppad when creating a new coroutine,
742 avoids crashes on early coro destruction.
743
7443.41 Mon Jan 22 19:19:49 CET 2007
745 - readline on Coro::Handle did not support undefined $/,
746 nor did it deliver partial lines on EOF or error.
747 - implement malloc fallback for stack allocation because
748 stupid broken idiotic OSX has a stupid broken
749 idiotic fits-the-whole-os mmap "implementation" and
750 my dick feels longer if Coro is portable even to
751 obsolete platforms.
752
7533.4 Fri Jan 19 21:52:54 CET 2007
754 - remove t/09_timer.t, as it isn't really testing much
755 but was rather flaky in practise.
756 - async_pool coro would keep arguments and callback alive until
757 it was reused.
758 - cancellation of a coroutine could cause spurious idle calls
759 in cede_notself.
760
7613.3 Sat Jan 6 03:45:00 CET 2007
762 - implement $coro->on_destroy.
763 - Coro::Event blocking semantics have been changed,
764 documented and - hopefully - improved.
765 - fix nice adding, not subtracting, from priority.
766 - fix ->prio and api_is_ready (patch by Mark Hinds).
767 - fixed an assert ("... == prev__cctx->idle_te")
768 that could errronously trigger.
769 - fix various large and small memleaks.
770 - use a (hopefully) more stable cancel implementation
771 that immediately frees the coroutine data.
772 - cede/cede_notself return a status now.
773 - added Coro::guard function.
774 - added a global coroutine pool for jobs (on my machine,
775 I can create and execute 48k simple coros/s with async,
776 and 128k coros with async_pool).
777 - Coro::AIO now uses the coroutine priority as io priority.
778
7793.2 Fri Dec 22 05:07:09 CET 2006
780 - improve portability to slightly older perls.
781 - use cleaner coroutine destruction.
782 - simplify configuration for users.
783 - optionally (unrecommended) prefer perl functions over
784 their coro replacements.
785
7863.11 Tue Dec 5 13:11:24 CET 2006
787 - fixed some bogus assert's, but as perl.h disables assert even
788 without NDEBUG (thank you very much), not too many people should
789 notice (that did include myself). Andreas König noticed, though :)
790 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
791 it. Also noticed by Andreas König :)
792 - save/restore tainted status.
793 - verified to pass the testsuite on my 5.9.5.
794
7953.1 Mon Dec 4 23:03:40 CET 2006
796 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
797 - incompatible change: transfer flags are now per-state.
798 - give a better error message on deadlock.
799 - document Coro::nready.
800 - enhanced testsuite.
801
8023.01 Sun Dec 3 23:47:42 CET 2006
803 - forgot to include Coro::Timer.
804
8053.0 Sun Dec 3 22:57:25 CET 2006
806 - the "FINALLY COMPLETELY STABLE" release (coming soon:
807 the "FAMOUS LAST WORDS" release).
808 - implement a new stack sharing algorithm, which uses a stack
809 pool (size currently hardcoded).
810 - make stack sharing mandatory (it no longer uses a heuristic).
811 - eval/die no longer cause weird problems under heavy use.
812 - Coro::Event could cause livelocks if it was used but
813 no Coro::Event watchers were used.
814 - Coro::Event now uses asynccheck as prepare does not
815 check for changed watchers.
816 - Coro::Event allows multiple waiting coros and will wake up one
817 per event.
818 - Coro::Event should be cleaner and more efficient now.
819 - new utility function Coro::unblock_sub.
820 - document the sad fact that Event is no longer reentrant.
821 - putting a coroutine into the ready queue twice could under
822 some circumstances lead to stack corruption.
823 - minor incompatibility: subclassing Coro::State is supported
824 directly now without going through a _coro_state member.
825 - state/coro switching is much faster now.
826 - very minor optimisations and code/documentation cleanup.
827 - avoid problems due to compiler inlining.
828 - removed timers from Coro::Timer -> use AnyEvent instead.
829 - replaced Coro::idle coroutine by (cleaner) idle handler.
830 - updated to newest libcoro.
831 - implement enhanced support for valgrind.
832 - implement is_ready and return value for ready.
833 - removed Coro::Cont, it was a misnomer (it's generators),
834 and it was somewhat annoying to get it right. Will come back
835 if somebody asks for it :)
836 - many ->wait methods and Coro::Event could return
837 spuriously without the event having happened.
838
8392.5 Tue Nov 7 12:22:33 CET 2006
3 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket 840 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
4 use AnyEvent, moved them to Coro/. 841 use AnyEvent, moved them to Coro/.
5 - added Coro::LWP which contains all the uglyness required to 842 - added Coro::LWP which contains all the uglyness required to
6 make LWP non-blocking. 843 make LWP non-blocking.
7 - should work with perl 5.9.x now (Andreas König made me do it). 844 - should work with perl 5.9.x now (Andreas König made me do it).

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