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Comparing Coro/Changes (file contents):
Revision 1.352 by root, Sun May 25 01:32:36 2008 UTC vs.
Revision 1.565 by root, Fri May 13 19:39:26 2011 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO. 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang's 4TODO: channel->maxsize(newsize)?
5 actor model (which is cool in a lot of important aspects (failures!), 5TODO: http://www.microsoft.com/msj/archive/s2ce.aspx
6 but very lacking in others (higher level ipc)).
7 6
84.72 7TODO: tutorial
8 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
9 destroyed and cleaned up automatically (e.g. async { schedule }).
10 - Coro::State->is_destroyed is now called is_zombie.
11 - implement a Coro->safe_cancel method that might fail, but
12 cancels in a "safer" way if it succeeds.
13 - croak when a coro that is being cancelled tries to block
14 (e.g. while executing a guard block), instead of crashing or
15 deadlocking.
16 - use a more robust and also faster method to identify Coro::State
17 objects - speeds up everything a bit.
18 - implement Coro->cancel in XS for a 20% speed improvement, and to
19 be able to implement mutual cancellation.
20 - speed up context switches by a percent or two by more efficiently
21 allocating context stack entries.
22 - implement Coro->join and Coro->on_destroy in XS for a speedup and
23 a reduction in memory use.
24 - cancelling a coro while it itself is cancelling another coro is
25 now supported and working, instead of triggering an assertion.
26 - be a bit more crash-resistant when calling (buggy) on_destroy
27 callbacks (best effort).
28 - move on_destroy into the slf_frame, to allow extension slf
29 functions to have destructors.
30 - get rid if coro refcounting - simply crash in other interpreter
31 threads by nulling the pointers on clone.
32
335.372 Wed Feb 23 06:14:30 CET 2011
34 - apparently mingw doesn't provide a working gettimeofday, try to
35 work around that by relying on Time::HiRes (indirectly brought to
36 my attention by Max Maischein).
37 - fix some portability issues when Time::HiRes was used.
38
395.371 Mon Feb 21 14:36:08 CET 2011
40 - backport to windows process emulation code again.
41
425.37 Sat Feb 19 07:49:44 CET 2011
43 - add a big "Coro thread life cycle" section to "man Coro".
44 - try a tentative workaround against the breakage that 5.13 has
45 introduced without depreciation period. sigh.
46 - no longer use Time::HiRes if gettimeofday is available, which
47 saves quite a lot of memory.
48
495.36 Sun Feb 13 05:33:41 CET 2011
50 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
51 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
52 method call.
53 - undocument Coro::Timer::sleep and obsolete whole module.
54 - optimise Coro::Timer::timeout memory and cpu usage.
55 - slightly updated Coro::Intro for recent changes.
56 - do not initialise PL_dirty anymore.
57
585.25 Thu Nov 11 01:08:39 CET 2010
59 - try a different approach on netbsd - netbsd 5 finally has marginally
60 working pthreads, but still broken ucontext/sigaltstack.
61 - openbsd 4.8 finally got their act together, Coro works out of the box
62 with asm, setjmp and pthreads (no change, just informational).
63
645.24 Sat Oct 23 11:27:12 CEST 2010
65 - port to the EV 4.0 API.
66 - work around bugs in mingw32, making strawberry perl work
67 out of the box.
68 - correctly modify Coro::AIO function prototypes
69 so that they reflect the "no optional parameters" rule.
70 - "ported" libcoro to C++.
71
725.23 Mon May 17 18:50:42 CEST 2010
73 - be more resistant to ordering changes when initialising
74 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
75 Waldorf).
76 - document that perl 5.12 deliberately removed support for cloning.
77
785.22 Wed Apr 14 03:55:35 CEST 2010
79 - correctly return udnef on errors in Coro::Handle::read/write
80 (testcase by Marc Mims).
81 - convert Coro::Util into a "perl compatibility wrapper" - the functions
82 are less useful now, but are drop-in replacements for existing
83 functions, listing better alternatives in the documentation. This also
84 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
85 with Coro::Util::inet_aton.
86 - do not override $Coro::idle unconditionally in Coro.pm, as other
87 modules could have provided their own idle coro already
88 (for exmaple, Coro::AnyEvent).
89 - fix Coro::Util::gethost* functions.
90 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
91
925.21 Wed Dec 16 07:19:51 CET 2009
93 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
94 together.
95 - add some examples on how to combine other event loops with Coro in
96 Coro::AnyEvent, and how to run it (and not to block). Seems to be
97 the most common source of confusion.
98 - try to catch people naively blocking in an event callback.
99 - work around the perl filehandle bug issue in conjunction with
100 older common::sense (as indirectly pointed out by ZSystem).
101 - clarify the "not from signal handlers" section.
102
1035.2 Sun Oct 4 14:54:24 CEST 2009
104 - Coro::Storable destroyed the prototypes of the functions it wrapped.
105 - export rouse_cb and rouse_wait by default now.
106 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
107 - new method $state->swap_sv.
108 - added section on "windows process emulation" to the manpage,
109 after a not-so-fruitful (nor-friendly) "discussion" with chip
110 salzenberg (discussion implies arguments, but his only arguments
111 were ad-hominems, one wonders why he started it in the first
112 place). I hope this explains it well enough for him to understand,
113 and maybe well enough for others to understand.
114 - use common::sense everywhere now.
115 - idle callbacks are no longer supported, use idle coros instead.
116 - print a thread listing when a deadlock is detected.
117
1185.17 Sat Aug 22 23:09:31 CEST 2009
119 - work around a bug in the perl debugger causing crashes
120 when running under the debugger by marking _pool_handler as nodebug.
121 - speed up Coro::async considerably.
122 - try some hacks to get netbsd to work "more often" - their broken
123 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
124 - convert Coro to AE 5.0 API.
125
1265.162 Tue Jul 28 04:04:03 CEST 2009
127 - perl 5.8.2 is now minimum requirement.
128 - skip t/19_handle.t on broken windows perls.
129
1305.161 Wed Jul 22 04:47:38 CEST 2009
131 - Coro::AnyEvent::poll could have a different prototype when EV was
132 used as backend (analyzed by Tatsuhiko Miyagawa).
133 - Coro::AnyEvent errornously initialised the event loop when loaded,
134 not on demand.
135 - try to workaround rare */t/01_unblock.t failures.
136
1375.16 Tue Jul 21 01:44:37 CEST 2009
138 - Coro::AnyEvent failed to hook into the event loop
139 when no threads had been readied between detecting
140 the event loop and actually running it.
141 - considerably speed up Coro::Select by taking avdantage
142 of AnyEvent > 4.8 and some other optimisations.
143 - implement paragraph readline mode in Coro::Handle
144 (based on patches by Zsbán Ambrus).
145 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
146 and analyzed by Yasuhiro MATSUMOTO).
147 - clarified libcoro license and copyright.
148 - someone stole my EXTRA_META!!!
149 - implement Coro::Select::patch_pp_sselect and it's brother,
150 for hardcode select overriding.
151
1525.151 Mon Jul 6 05:41:57 CEST 2009
153 - backport to windows process emulation code again (patch by
154 Yasuhiro MATSUMOTO).
155 - slightly update Coro::MakeMaker.
156
1575.15 Tue Jun 30 10:28:06 CEST 2009
158 - deprecate Coro::Socket, document how to get ipv6 support via
159 AnyEvent::Socket instead.
160 - implement signal->wait ($cb) interface, similar to semaphores.
161 - work around SvOK not supporting getmagic, so we have to getmagic
162 to test for undef :/ (reported by Matthias Waldorf).
163 - load Coro::AnyEvent in all modules using AnyEvent.
164 - work around perl corrupting our internal data structures,
165 reported by Tokuhiro Matsuno.
166 - enable per-coroutine real and cpu time gathering
167 (Coro::State::enable_times).
168
1695.14 Wed Jun 24 01:37:48 CEST 2009
170 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
171 as this seems to have been a difficult concept (poll, sleep, idle,
172 idle_upto).
173 - add Coro::AnyEvent::readable/writable functions.
174 - clarify Coro::EV/Event/AnyEvent manpages.
175 - free per-thread global scalars in the thread calling ->cancel, to
176 avoid crashes when $_, $@ etc., are magical but some of those
177 had already been freed.
178 - "unexperimentalise" the callback interface for Coro::Semaphore.
179 - speed up ready queue management/context switching by using a linked
180 list instead of an array (~5-10%).
181 - implement "watch" command in Coro::Debug shells.
182 - for fun, implement time-slicing as an example in the manpage.
183 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
184 Coro::Event, use the normal AnyEvent handling instead of dieing
185 (the same is true for Coro::Handle).
186 - properly document Coro::EV::timed_io_once.
187 - avoid unneccessary ->cancel calls in Coro::Handle.
188 - maybe make it work on mingw32 with win32 backend
189 (based on patch by Yasuhiro Matsumoto).
190
1915.132 Fri May 29 09:00:39 CEST 2009
192 - do not keep a reference to the argument itself in
193 Coro::Semaphore::guard, as it could change later.
194 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
195 should support a prepare callback.
196
1975.131 Mon Mar 16 23:20:37 CET 2009
198 - implement and document Coro->suspend, Coro->resume.
199 - fix Coro::Select implementation to not (often) close
200 the passed file descriptors (testcase provided by pippijn).
201
2025.13 Mon Dec 15 21:51:42 CET 2008
203 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
204 - don't set diehook to C<undef> but instead to NULL, to avoid
205 spurious warnings.
206 - fix a lot of bugs in Coro::SemaphoreSet.
207 - Coro::SemaphoreSet will less often create a semaphore needlessly.
208 - add Coro::SemaphoreSet::count and wait methods.
209 - take advantage of the new Guard module.
210 - deprecate Coro::guard.
211 - try to fix the dreaded 01_unblock tests once more. I hate it when
212 testsuites need more fixing than the code they are supposed to test.
213 - croak in more cases when a required callback isn't resolvable.
214 - fix some minor issues in Coro::State->call/eval.
215 - use current coroutine context instead of a temporary one
216 when temporarily switching to another coroutine.
217 - do not call C-level on_destroy handlers during global destruction,
218 to avoid needless segfaults.
219
2205.12 Sun Dec 7 13:30:38 CET 2008
221 - add default config for MirOS, which seems to be a bug-to-bug
222 compatible fork of openbsd ("world domination by releasing
223 openbsd cvs before the openbsd folks do it" or so :).
224 - free_padlist did destroy the names pad, not good, but didn't
225 seem to bother perl - this could fix issues such as eval ""
226 inside a function called from multiple coroutines.
227 - use a different method to detect destruction time.
228 - be more careful when freeing padlists just before global
229 destruction.
230 - fixed and expanded the call/cc example.
231 - renamed _terminate to _coro_run.
232 - new method Coro::Channel->shutdown.
233 - try pthreads on openbsd <4.4 (broken sigaltstack, will
234 pthreads fare better?).
235 - be less picky about destroying "a" running coroutine.
236
2375.11 Tue Nov 25 21:49:05 CET 2008
238 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
239 working code with failed assertions, introducing more bugs than
240 it fixes, requiring elaborate workarounds :(
241
2425.1 Mon Nov 24 08:54:59 CET 2008
243 - wrote a small introductory tutorial - Coro::Intro.
244 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
245 - Coro::Select did errornously dup the file descriptors
246 and didn't work with all AnyEvent backends.
247 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
248 LWP data transfers.
249 - disassociate c contexts from coro objects - this is agruably more
250 correct, but mostly allows sharing of cctxs between coro and state
251 objects, for added memory savings and speed increases.
252 - bumped $Coro::POOL_RSS up to 32kb by default.
253 - no longer set the optype to OP_CUSTOM, as B::* understandably
254 doesn't like this very much (and we *are* a type of entersub).
255 - implement state cloning, just to prove that call/cc can be done.
256 - automatically load Coro::AnyEvent in Coro::Handle.
257 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
258 do not have this method (and don't need it either).
259 - speed up generic anyevent methods in Coro::Handle by using rouse
260 callbacks.
261 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
262 others. It also makes the debugger happier, as you can trace
263 through the idle threads now.
264 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
265 - eg/event was pretty broken.
266 - better 5.8.6 compatibility.
267
2685.0 Thu Nov 20 10:35:05 CET 2008
269 - NEW ARCHITECTURE: use the latest 4.x version if you experience
270 stability issues.
271 - bump API version to 7 - all dependents must be recompiled.
272 - removed timed_* functions - they were not being used anyways
273 and should be replaced by a more generic mechanism -
274 and were annoying to support anyways :)
275 - removed SemaphoreSet's waiter method - use sem method instead.
276 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
277 - async_pool did free a scalar value twice
278 ("Attempt to unreference...").
279 - fix a longstanding bug where calling terminate on a coro that
280 was waiting for a semaphore that was just becoming available
281 would cause a deadlock (semaphore would get into a state where
282 it was available but waiters were still blocked).
283 - calling throw on a coroutine that is waiting for a semaphore will
284 no longer make it acquire the semaphore (and thus leak a count).
285 - perl's process emulation is now not even theoretically supported
286 anymore.
287 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
288 conversion of callback-style to blocking-style.
289 - new methods $coro->schedule_to and ->cede_to, to specifically
290 schedule or cede to a specific coroutine.
291 - new function Coro::Semaphore::wait.
292 - use named constants in Coro::Channel (Richard Hundt).
293 - directly patch the entersub opcode calling SLF functions (cede,
294 transfer and so on). this does speed up context switching, but
295 more importanly, it frees us from the hardcoded behaviour of
296 entersub, so we might actually be able to return something from
297 those functions and atcually create new ones.
298 - take advantage of __builtin_frame_address on gcc.
299 - expose THX in coroapi (not sure whether this was a wise decision,
300 as "threaded" perls are running at half speed anyways).
301 - implement execute_slf (schedule-like-function) interface that makes
302 it possible to implement schedule-like-functions in XS.
303 - use new SLF interface to massively speed up Coro::EV by roughly a
304 factor of two.
305 - used new SLF interface to massively speed up Coro::Semaphore by a
306 factor of three.
307 - used new SLF interface to speed up Coro::AIO by roughly a factor of
308 four and reduce its memory usage considerably.
309 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
310 for a nice speedup and vastly more correct behaviour. Also implement
311 a new method "sem" to get at the underlying semaphore object.
312 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
313 (in comparison) 20-40% speedup.
314 - used new SLF interface to reimplement Coro::Signal gaining
315 some unknown (because I was too lazy), but certain, speedup, and also
316 making signals reliable for the first time.
317 - used new SLF interface and other optimisations to speed up async_pool
318 by a factor of two. It also doesn't rely on perl's exception mechanism
319 to exit anymore. The overhead for terminating an async_pool, coro over
320 a normal async is now very small.
321 - sped up coroutine creation/destruction by 40%.
322 - forgot to include Coro/libcoro/README in the dist for all these years.
323 - work around a freebsd pthreads bug (manual testcancel is required as
324 pthread_cond_wait isn't a cancellation point on freebsd).
325 - use new rouse functions to speed up and simplify Coro::BDB.
326 - make "prefer perl native functions" work with threaded perls.
327 - condense Coro::Debug ps output, hint at v and w flags.
328 - (libcoro) lots of minor cleanups and portability improvements.
329
3304.914 Wed Nov 19 12:54:18 CET 2008
331 - fix a disastrous bug in the readline optimisation
332 introduced in 4.801.
333
3344.913 Sat Nov 15 07:58:28 CET 2008
335 - async_pool did free a scalar value twice
336 ("Attempt to unreference...").
337
3384.912 Thu Nov 13 18:31:23 CET 2008
339 - minor cleanups.
340 - use much larger stacks on linux and perl < 5.8.8.
341 - Coro::Debug::new_unix_server did not unlink the socket
342 when destroyed.
343
3444.911 Tue Nov 11 04:26:17 CET 2008
345 - "port" to threaded perls.
346
3474.91 Mon Nov 10 05:36:38 CET 2008
348 - the ->throw exception object no longer leaks.
349 - creating a new cctx leaked a scopestack entry (memleak).
350 - new coroutines didn't get created with a zero flags field
351 (unknown impact).
352 - calling ->throw on a not-yet-started coroutine should now work
353 instead of being ignored.
354 - ->throw is now supported on Coro::State objects.
355 - clean up cctx creation code a bit.
356 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
357
3584.9 Sat Nov 8 17:45:27 CET 2008
359 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
360 - (libcoro) no longer leak threads in the experimental pthread backend,
361 also speed it up considerably.
362 - (libcoro) do not rely on makecontext passing void *'s unscathed.
363 - fix compiletime dependencies on libcoro in the Makefile.
364 - cctx_count wasn't always updated properly.
365 - Coro::State::cctx_stacksize wasn't applied correctly.
366 - new function Coro::State::cctx_max_idle.
367 - the default max number of idle C contexts is now 4.
368 - (libcoro) try harder to get _setjmp/_longjmp.
369 - (libcoro) cleanup and extend the libcoro API to officially
370 allow the creation of empty source contexts.
371 - very experimental workaround for the totally broken netbsd platform.
372 - tried to hack around openbsd bugs.
373
3744.804 Wed Nov 5 16:36:00 CET 2008
375 - Coro::Debug::new_unix_server would not create a non-blocking listening
376 socket, sometimes causing freezes.
377 - (libcoro) fix misaligned stack points for setjmp and assembly
378 methods, which can cause crashes on x86/x86_64 with a sufficiently
379 aggressive compiler.
380 - new function: Coro::Debug::new_tcp_server.
381 - move ->throw into the Coro class because it only works on coro objects.
382
3834.803 Mon Nov 3 17:16:12 CET 2008
384 - (libcoro) use a global asm statement to become independent of gcc
385 otpimisations for CORO_ASM (thanks to pippijn for the idea).
386 - try to workaround yet another broken bsd, this time dragonfly.
387
3884.802 Thu Oct 30 10:56:12 CET 2008
389 - support -fno-omit-frame-pointer on x86 with the assembly method.
390 - tune 01_unblock.t tests a bit.
391
3924.801 Wed Oct 22 18:33:37 CEST 2008
393 - improve readline speed for very long "lines".
394 - backport to 5.8.8.
395
3964.8 Thu Oct 2 13:34:40 CEST 2008
397 - new function Coro::AIO::aio_wait.
398 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
399 - greatly speed up and reduce memory usage of Coro::AIO requests.
400 - implement some other µ-optimisations.
401
4024.749 Mon Sep 29 14:40:12 CEST 2008
403 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
404
4054.748 Sat Sep 27 14:03:19 CEST 2008
406 - implement, but do not document, PerlIO::cede(granularity).
407 - Coro::Storable forgot to wrap Storable::pstore.
408 - work around the multitude of leaks and memory corruption
409 bugs in PerlIO::via by using our own C-level perliol. As a side
410 effect, Coro::Storable is now much, much, much faster.
411
4124.747 Tue Sep 23 01:59:41 CEST 2008
413 - fix a per-cv memleak (one empty array was leaked per
414 code reference).
415 - avoid a crash in coro->call|rss when the coroutine was already
416 destroyed (most noticably when using Coro::Debug::ps :)
417 - also protect *Storable::FILE.
418 - push up default storable granularity to 20ms.
419
4204.746 Sun Sep 21 03:22:20 CEST 2008
421 - be more insistent on locking Storable against reentrancy
422 in Coro::Storable.
423 - move swap_def?v and throw to Coro::State, as documented.
424
4254.745 Thu Jul 24 00:14:38 CEST 2008
426 - remove debugging code related to MgPV_nolen_const, also try to
427 make it compile with perl 5.8.6 (yes, apple apparently loves
428 outdated software). Reported by John S.
429
4304.744 Tue Jul 8 22:06:35 CEST 2008
431 - correctly provide default DIE/WARN handlers as documented.
432 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
433 implementations inside perl work fine for us.
434
4354.743 Mon Jun 16 00:21:57 CEST 2008
436 - when using Coro::EV without running EV::loop it could
437 result in busy-waiting for events, this has been fixed.
438 - reduce codesize and improve performance by using EV_DEFAULT_UC.
439
4404.742 Sat May 31 14:10:21 CEST 2008
441 - implement a workaround for (some) perl <5.8.8 versions.
442 - require EV 3.3+.
443
4444.741 Fri May 30 23:33:09 CEST 2008
445 - tell netbsd how utterly broken their imitation of an OS is
446 and refuse to build by default if pthreads are in use.
447 - switch to "s" method on all bsd's by default, as their ucontext
448 stuff seems just too broken.
449 - fix a bug in Coro::Select.
450
4514.74 Thu May 29 20:05:31 CEST 2008
452 - do not test Coro::LWP for lack of dependencies.
453 - do not test Coro::Select for lack of working perls.
454
4554.73 Thu May 29 2008
456 - fix a bug in Coro::EV which would cause it to block despite
457 there being runnable coroutines.
458 - sprinkle "no warnings" freely over everything, also suppress
459 warnings for some other modules.
460 - fix typo in WSAEWOULDBLOCK.
461
4624.72 Sun May 25 05:14:36 CEST 2008
9 - tweak META.yaml a bit, unfortunately, there is no documented way 463 - tweak META.yaml a bit, unfortunately, there is no documented way
10 to have optional dependencies with CPAN. doh :( 464 to have optional dependencies with CPAN. doh :(
11 - avoid running some tests on windows because they would fail due to 465 - avoid running some tests on windows because they would fail due to
12 perl bug (broken fork, broken pipes...). 466 perl bug (broken fork, broken pipes...).
13 - work around perl on windows bugs where perl returns undocumented 467 - work around perl on windows bugs where perl returns undocumented

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