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Comparing Coro/Changes (file contents):
Revision 1.399 by root, Mon Nov 10 00:02:29 2008 UTC vs.
Revision 1.693 by root, Thu Aug 19 22:43:02 2021 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: should explore PerlIO::coroaio (perl leaks like hell). 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: __GCC_HAVE_DWARF2_CFI_ASM
6 but very lacking in others (higher level ipc)). 6TODO: swap_sv, maybe add scope_swap_sv?
7TODO: croak when async_pool tries to run canceled thread?
8TODO: how to debug safe_cancel failure (vebrose mode? show how to make backtrace?)
9TODO: scalar context for Coro::AIO wrappers?
7 10
84.91 11TODO: State.xs could short-circuit some macros such as CORO_EXECUTE_SLF
12TODO: use frame->destroy to improve Coro::EV
13
14TODO: concurrent ->recv on same condvar
15sub Coro::AnyEvent::CondVar::_send {
16 if ($_[0]{_ae_coro}) {
17 $_->ready
18 for values %{ delete $_[0]{_ae_coro} }
19 }
20};
21
22sub Coro::AnyEvent::CondVar::_wait {
23 until ($_[0]{_ae_sent}) {
24 $AnyEvent::CondVar::Base::WAITING = 0; # avoid recursive check by AnyEvent
25 local $_[0]{_ae_coro}{$Coro::current+0} = $Coro::current;
26 Coro::schedule;
27 }
28};
29
30 - potential fix for an interesting type of recursive coro
31 destruction (testcase by Christopher J. Madsen).
32 - change jit executable strategy, to hopefully appease more
33 hardened environments.
34
356.57 Wed Jul 29 15:08:44 CEST 2020
36 - override AnyEvent condvar methods "properly", as AnyEvent
37 has support for pluggable condvars since 2011. This also
38 avoids problems with recursive waits by avoiding to mix
39 impl methods with coro code.
40 - allow rouse_wait to be called in a different thread.
41 - slightly clarify rouse_cb/rouse_wait documentation.
42 - slightly improve rouse callback performance and memory usage.
43 - try to report correct calller when throwing exception in
44 on $condvar->recv, not a useless line in Coro::AnyEvent.
45
466.56 Thu Feb 20 19:40:07 CET 2020
47 - Coro::EV::time*once functions used ev_once, which is not cancelable.
48 This could cause problems due to I/O watchers not being stopped up
49 on exceptions/cancellation.
50
516.55 Fri Jul 19 17:28:09 CEST 2019
52 - Coro::RWLock woke up only one reader instead of all after a wrlock
53 (analyzed and patch by Maxim Skorobogatov).
54 - slightly improved documentation of Coro::RWLock and RWLock testcase.
55 - quickly (re)-ported to minix 3.3 before minix crashed again.
56
576.54 Sun Dec 16 11:06:07 CET 2018
58 - reinstate Coro::Select::select prototype - it breaks more than it fixes.
59
606.53 Sun Dec 16 10:33:15 CET 2018
61 - the autogenerated prototypes of Coro::AIO now add ";" at the end
62 to avoid generating named unary operators and messing up parsing
63 (mostly affects aio_mlockall 4 | 8 which was parsed as
64 (aio_mlockall 4) | 8).
65 - do not use a prototype for select in Coro::Select, as CORE::select also
66 doesn't have one.
67
686.52 Tue Aug 14 18:49:43 CEST 2018
69 - libcoro update: allow sharing of coro threads using the pthreads
70 backend among different pthreads, as is required by Coro::Multicore.
71 - always allow ->call and ->eval when the coro is the current coroutine. this
72 makes it possible, among other things, to call these on $Coro::main.
73 - minor code cleanups.
74
756.514 Thu Aug 31 18:25:31 CEST 2017
76 - safe_cancel no longer croaks when called on already-destroyed
77 thread, but instead "just works".
78
796.513 Sat Jul 15 01:18:51 CEST 2017
80 - experimental 5.22 comaptibility changes (PadlistNAMES).
81 - removed attributes example and made sure the other examples
82 still work.
83 - fix some statevar types for newer perls, should be of no consequence.
84
856.512 Fri Jul 14 05:03:17 CEST 2017
86 - seems to pass test suite down till 5.8.9, so make this the
87 minimum requirement in Makefile.PL.
88 - experimental 5.24 compatibility changes (SUB_ARGARRAY).
89 - experimental 5.26 compatibility changes (PL_comppad -> PADOFFSET).
90 - disable FORTIFY_SOURCE to avoid broken (but well-intentioned)
91 fortified longjmp variants in some libcs.
92 - re-try JIT allocation without PROT_EXEC, to hopefully improve
93 portability (still doesn't seem to work around broken selinux
94 mmap everywhere).
95 - speling fixes (Xavier Guimard).
96
976.511 Sun Jun 26 23:44:50 CEST 2016
98 - make it compile with threaded perls again.
99 - simplify and speed up __DIE__ and __WARN__ handling.
100
1016.51 Sat Jun 25 20:57:20 CEST 2016
102 - 6.5 release didn't compile on most older perls due to
103 a logic error enabling experimental 5.24 code for all versions.
104 - since various broken or deficient patches float around
105 to work around the vtbl API breakage in perl, let's provide
106 our own workaround, which seems to be much less invasive
107 and more compatible than the approaches seen so far. YMMV.
108 - work around assertion failure in perl_destruct on 5.24
109 (analyzed by Dave Mitchell).
110
1116.5 Wed Jun 22 22:23:50 CEST 2016
112 - swap_sv swapping order was not symmetrical, causing
113 wrong swaps when swap_sv was used multiple times on the
114 same sv in the same thread.
115 - swap_sv calls can now be undone by calling it again
116 with the same variables.
117 - swap_sv calls will now be undone in async_pool threads.
118 - split Coro::Semaphore::up/adjust into separate xs functions
119 for better error reporting, at slight codesize increase.
120 - (libcoro) arm assembly support, please test and report.
121 - adjust to PL_savestack changes in perl 5.24 (adapted from
122 the debian patch, which unfortunately gets it wrong).
123
1246.49 Sat Oct 17 01:40:12 CEST 2015
125 - throwing an exception to a thread waiting in
126 Coro::Handle using Coro::EV did not stop the watchers,
127 causing the next call to fail (testcase by Martin Pritchard).
128 - bump minimum perl version to 5.10.
129
1306.48 Sun Oct 4 19:03:51 CEST 2015
131 - fix memory leak when Coro::Handle uses Coro::EV internally
132 (testcase by Sten Sten).
133 - update code to libev 4 API (internally, Coro still used the
134 version 3 API calls).
135 - remove unused hv_sig.
136
1376.47 Sat Jul 11 03:58:20 CEST 2015
138 - swap_svs - NVs can be in the SV head beginning with 5.20.
139
1406.46 Tue Jun 30 14:36:30 CEST 2015
141 - restore portability to perls with windows fork emulation
142 (patch by Petr Písař).
143
1446.45 Tue Jun 30 01:40:08 CEST 2015
145 - restore portability to perl 5.16 and below.
146
1476.44 Tue Jun 30 00:41:54 CEST 2015
148 - avoid segfaulting (or worse) when tracing a canceled thread.
149 - the Event module silently broke it's public hook API, causing
150 failures on perls compiled with -Duselongdouble. Requiring
151 the latest version of Event because I don't know which release
152 changed this (it's not mentioned in the ChangeLog).
153 - allow xs level enterleave hooks via CoroAPI.
154
1556.43 Thu Jun 4 15:38:14 CEST 2015
156 - use stability canary.
157 - port to stableperl-5.22.0-1.001.
158 - update libecb.
159
1606.42 Wed Feb 11 20:29:52 CET 2015
161 - Coro::SemaphoreSet->try did not actually work (analyzed by
162 SATO Kentaro).
163 - upgrade libecb to be C11 compliant.
164
1656.41 Sat Sep 6 22:08:46 CEST 2014
166 - restore portability to perl 5.8.x.
167 - give new Coro's a valid GvHV(PL_hintgv) - this is slow and takes
168 up some memory, but fixes "use feature" and similar modules
169 when used inside a Coro.
170 - allow zero as argument to Coro::Channel to mean the same thing
171 as no argument. this works with older versions as well,
172 but wasn't legal until now.
173 - slightly better c header file detection.
174
1756.39 Mon Jun 2 00:00:08 CEST 2014
176 - work around more incompatible changes in 5.20.
177
1786.38 Sun Jun 1 21:54:23 CEST 2014
179 - check that perl slots actually have enough space to hold
180 interpreter variables.
181 - untested port to perl 5.19 (64 bit tmps indices) (reported
182 by Andreas König).
183 - croak when cancel is called without a thread context.
184
1856.37 Tue Mar 4 13:27:33 CET 2014
186 - *sigh*, removed leftover debugging code from debugging a
187 perl bug, of all things.
188
1896.36 Tue Mar 4 07:11:59 CET 2014
190 - semaphores would not clear the destroy hook when interrupted
191 by ->throw, causing segfaults or worse.
192 - ->throw on a thread waiting for a semaphore did not acquire
193 the semaphore, but also didn't wake up other waiters,
194 possibly causing a deadlock.
195 - "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
196 to report a full stacktrace, which should help find out
197 where the actual call is.
198 - "atomically" destroy data in slf_destroy, because it is
199 the right thing to do, just in case.
200 - disable ecb.h libm dependency, to compile on ancient systems
201 or under adverse conditions.
202
2036.33 Mon Nov 18 11:26:27 CET 2013
204 - do not crash when freeing padlists with holes (in 5.18).
205 - tentative SVt_BIND 5.19 port/fix.
206
2076.32 Tue Nov 5 15:35:35 CET 2013
208 - use a new algorithm to derive padlists for perl 5.18. The old
209 one could lead to 0-pointer accesses inside perl (reported
210 by Darin McBride).
211
2126.31 Thu May 9 07:39:48 CEST 2013
213 - Coro::AIO requests would crash if the thread was ready'd
214 while the request was ongoing.
215
2166.29 Wed May 8 02:55:18 CEST 2013
217 - when an on_destroy handler destructs the coro currently being
218 destructed a perl scalar could be accessed after being freed,
219 likely causing a crash.
220
2216.28 Wed Mar 6 06:58:02 CET 2013
222 - clean remnants of existing __DIE__ and __WARN__ handlers so
223 they lose their magic and will not cause segfaults later
224 (testcase by Andrey Sagulin).
225 - improved Coro::State documentation a bit.
226 - Coro::Debug::command now flushes the output.
227 - add hack detection code for x32 abi, because the braindead slugs
228 who designed that made it look exactly like x86_64 without
229 providing proper compile time symbols to test for it. as a result,
230 this detection cannot work reliably.
231 - valgrind stack registering was broken.
232 - do not rely on Time::HiRes anymore in Coro::Debug.
233
2346.23 Fri Dec 7 23:36:37 CET 2012
235 - use experimental fiber implementation on native windows
236 perls.
237 - use sizeof (void *) as multiplication factor for stack sizes,
238 to accomodate the totally braindamaged microsoft 64 bit "os".
239 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
240 activeperl 5.16 crashes when PerlIO_define_layer is called due
241 to some bug in the perl dll, strawberry perl at least passes
242 the testsuite.
243 - implement Coro::Handle->peeraddr/host/port, for slightly
244 improved compatibility with LWP.
245 - implement 5.17 compatibility by almost blindly applying a
246 good-looking patch by Father Chrysostomos.
247 - move stack management functions into libcoro 3.
248 - libcoro version 3 "released".
249 - support magic values as timed_io_once args.
250 - recommend AnyEvent 7+ or EV 4+, also require EV
251 version 4 or newer for Coro::EV.
252
2536.10 Tue Oct 9 01:14:27 CEST 2012
254 - updated ecb.h, it had a typo that caused it to not compile on many
255 big endian systems (reported by many people).
256 - disable memory fences in ecb.h to improve portability.
257
2586.09 Sat Oct 6 23:25:02 CEST 2012
259 - Coro::EV I/O watchers were not interruptible by exceptions
260 (Coro::State::throw) (testcase by sten).
261 - ->throw now puts threads into the ready queue, as this seems to
262 be expected by existing code, and code that doesn't cope with spurious
263 wakeups needs fixing anyway.
264 - use fd -1 in mmap.
265 - cast I32 to int in error message printf.
266 - warn about broken so-called "hardened" kernels.
267
2686.08 Fri Apr 13 12:05:47 CEST 2012
269 - be more aggressive about exiting like perl does - formerly,
270 exiting from the non-main thread would not execute END blocks.
271
2726.07 Fri Nov 11 21:21:48 CET 2011
273 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
274 - update ecb.h.
275
2766.06 Mon Aug 8 23:59:48 CEST 2011
277 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
278 backend, which is an order of magnitude slower. unfortunately, cygwins
279 pthread implementation isn't very complete either, so allocate the stack
280 twice just to be sure.
281 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
282 in its ithreaded perl - best recompile cygwin and use the 'w'indows
283 backend for much better performance. also disable ithreads for
284 even better performance...).
285
2866.05 Thu Aug 4 21:36:36 CEST 2011
287 - blush, condvar values would not be propagated from send to recv anymore
288 (reported by Chip Salzenberg).
289 - use exponential increase for the readline buffer length in
290 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
291
2926.04 Wed Aug 3 17:15:45 CEST 2011
293 - use even more efficient and more compatible condvars for
294 compatibility to AnyEvent 6.x :)
295 - more inconsequential ecb.h updates.
296
2976.03 Wed Aug 3 11:41:30 CEST 2011
298 - change how Coro patches AnyEvent condvars for compatibility to
299 AnyEvent 6.x.
300 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
301 hasn't been included.
302
3036.02 Wed Jul 13 04:35:19 CEST 2011
304 - "improve portability to Gentoo" - gentoo manages to put perl variables
305 in memory areas that are farther than 2gb apart, which the jit couldn't
306 handle and barfed. now it's just a bit slower on gentoo and similar
307 systems.
308
3096.01 Sun Jul 3 12:31:14 CEST 2011
310 - workarounds are good, but the test for whether pthreads are used
311 was not good. this one should be better.
312 - check differently whether gcc generates cfi instructions itself.
313
3146.0 Wed Jun 29 19:43:35 CEST 2011
315 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
316 destroyed and cleaned up automatically (e.g. async { schedule }).
317 - implement a JIT compiler for part of the thread switch code,
318 which gives a 50% speed improvement on threaded perls, and
319 about 4% on non-threaded perls (so threaded perls now finally
320 reach about half the speed of non-threaded perls).
321 - slightly modernise Coro::Intro, add section about rouse functions.
322 - avoid DEFSV and ERRSV, giving another 10% improvement
323 in thread switching.
324 - Coro::State->is_destroyed is now called is_zombie.
325 - implement a Coro->safe_cancel method that might fail, but
326 cancels in a "safer" way if it succeeds.
327 - add preliminary support for DEBUGGING perls.
328 - get rid of two hash-accesses when initialising a new Coro - this
329 speeds up coro creation by almost a factor of two.
330 - croak when a coro that is being cancelled tries to block
331 (e.g. while executing a guard block), instead of crashing or
332 deadlocking.
333 - use a more robust and also faster method to identify Coro::State
334 objects - speeds up everything a bit.
335 - implement Coro->cancel in XS for a 20% speed improvement, and to
336 be able to implement mutual cancellation.
337 - speed up context switches by a percent or two by more efficiently
338 allocating context stack entries.
339 - implement Coro->join and Coro->on_destroy in XS for a speedup and
340 a reduction in memory use.
341 - cancelling a coro while it itself is cancelling another coro is
342 now supported and working, instead of triggering an assertion.
343 - be a bit more crash-resistant when calling (buggy) on_destroy
344 callbacks (best effort).
345 - move on_destroy into the slf_frame, to allow extension slf
346 functions to have destructors.
347 - get rid if coro refcounting - simply crash in other interpreter
348 threads by nulling the pointers on clone.
349 - simplify warn/die hook handling when loading Coro - the convoluted
350 logic seems to be no longer neccessary.
351 - use libecb instead of our own home-grown gcc hacks.
352 - document alternatives to Coro::LWP. Please use them :)
353 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
354 sigaltstack. Really. wine suffers from it, erlang suffers from it,
355 and it's known since at least 2006.
356
3575.372 Wed Feb 23 06:14:30 CET 2011
358 - apparently mingw doesn't provide a working gettimeofday, try to
359 work around that by relying on Time::HiRes (indirectly brought to
360 my attention by Max Maischein).
361 - fix some portability issues when Time::HiRes was used.
362
3635.371 Mon Feb 21 14:36:08 CET 2011
364 - backport to windows process emulation code again.
365
3665.37 Sat Feb 19 07:49:44 CET 2011
367 - add a big "Coro thread life cycle" section to "man Coro".
368 - try a tentative workaround against the breakage that 5.13 has
369 introduced without depreciation period. sigh.
370 - no longer use Time::HiRes if gettimeofday is available, which
371 saves quite a lot of memory.
372
3735.36 Sun Feb 13 05:33:41 CET 2011
374 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
375 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
376 method call.
377 - undocument Coro::Timer::sleep and obsolete whole module.
378 - optimise Coro::Timer::timeout memory and cpu usage.
379 - slightly updated Coro::Intro for recent changes.
380 - do not initialise PL_dirty anymore.
381
3825.25 Thu Nov 11 01:08:39 CET 2010
383 - try a different approach on netbsd - netbsd 5 finally has marginally
384 working pthreads, but still broken ucontext/sigaltstack.
385 - openbsd 4.8 finally got their act together, Coro works out of the box
386 with asm, setjmp and pthreads (no change, just informational).
387
3885.24 Sat Oct 23 11:27:12 CEST 2010
389 - port to the EV 4.0 API.
390 - work around bugs in mingw32, making strawberry perl work
391 out of the box.
392 - correctly modify Coro::AIO function prototypes
393 so that they reflect the "no optional parameters" rule.
394 - "ported" libcoro to C++.
395
3965.23 Mon May 17 18:50:42 CEST 2010
397 - be more resistant to ordering changes when initialising
398 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
399 Waldorf).
400 - document that perl 5.12 deliberately removed support for cloning.
401
4025.22 Wed Apr 14 03:55:35 CEST 2010
403 - correctly return udnef on errors in Coro::Handle::read/write
404 (testcase by Marc Mims).
405 - convert Coro::Util into a "perl compatibility wrapper" - the functions
406 are less useful now, but are drop-in replacements for existing
407 functions, listing better alternatives in the documentation. This also
408 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
409 with Coro::Util::inet_aton.
410 - do not override $Coro::idle unconditionally in Coro.pm, as other
411 modules could have provided their own idle coro already
412 (for exmaple, Coro::AnyEvent).
413 - fix Coro::Util::gethost* functions.
414 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
415
4165.21 Wed Dec 16 07:19:51 CET 2009
417 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
418 together.
419 - add some examples on how to combine other event loops with Coro in
420 Coro::AnyEvent, and how to run it (and not to block). Seems to be
421 the most common source of confusion.
422 - try to catch people naively blocking in an event callback.
423 - work around the perl filehandle bug issue in conjunction with
424 older common::sense (as indirectly pointed out by ZSystem).
425 - clarify the "not from signal handlers" section.
426
4275.2 Sun Oct 4 14:54:24 CEST 2009
428 - Coro::Storable destroyed the prototypes of the functions it wrapped.
429 - export rouse_cb and rouse_wait by default now.
430 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
431 - new method $state->swap_sv.
432 - added section on "windows process emulation" to the manpage,
433 after a not-so-fruitful (nor-friendly) "discussion" with chip
434 salzenberg (discussion implies arguments, but his only arguments
435 were ad-hominems, one wonders why he started it in the first
436 place). I hope this explains it well enough for him to understand,
437 and maybe well enough for others to understand.
438 - use common::sense everywhere now.
439 - idle callbacks are no longer supported, use idle coros instead.
440 - print a thread listing when a deadlock is detected.
441
4425.17 Sat Aug 22 23:09:31 CEST 2009
443 - work around a bug in the perl debugger causing crashes
444 when running under the debugger by marking _pool_handler as nodebug.
445 - speed up Coro::async considerably.
446 - try some hacks to get netbsd to work "more often" - their broken
447 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
448 - convert Coro to AE 5.0 API.
449
4505.162 Tue Jul 28 04:04:03 CEST 2009
451 - perl 5.8.2 is now minimum requirement.
452 - skip t/19_handle.t on broken windows perls.
453
4545.161 Wed Jul 22 04:47:38 CEST 2009
455 - Coro::AnyEvent::poll could have a different prototype when EV was
456 used as backend (analyzed by Tatsuhiko Miyagawa).
457 - Coro::AnyEvent errornously initialised the event loop when loaded,
458 not on demand.
459 - try to workaround rare */t/01_unblock.t failures.
460
4615.16 Tue Jul 21 01:44:37 CEST 2009
462 - Coro::AnyEvent failed to hook into the event loop
463 when no threads had been readied between detecting
464 the event loop and actually running it.
465 - considerably speed up Coro::Select by taking avdantage
466 of AnyEvent > 4.8 and some other optimisations.
467 - implement paragraph readline mode in Coro::Handle
468 (based on patches by Zsbán Ambrus).
469 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
470 and analyzed by Yasuhiro MATSUMOTO).
471 - clarified libcoro license and copyright.
472 - someone stole my EXTRA_META!!!
473 - implement Coro::Select::patch_pp_sselect and it's brother,
474 for hardcode select overriding.
475
4765.151 Mon Jul 6 05:41:57 CEST 2009
477 - backport to windows process emulation code again (patch by
478 Yasuhiro MATSUMOTO).
479 - slightly update Coro::MakeMaker.
480
4815.15 Tue Jun 30 10:28:06 CEST 2009
482 - deprecate Coro::Socket, document how to get ipv6 support via
483 AnyEvent::Socket instead.
484 - implement signal->wait ($cb) interface, similar to semaphores.
485 - work around SvOK not supporting getmagic, so we have to getmagic
486 to test for undef :/ (reported by Matthias Waldorf).
487 - load Coro::AnyEvent in all modules using AnyEvent.
488 - work around perl corrupting our internal data structures,
489 reported by Tokuhiro Matsuno.
490 - enable per-coroutine real and cpu time gathering
491 (Coro::State::enable_times).
492
4935.14 Wed Jun 24 01:37:48 CEST 2009
494 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
495 as this seems to have been a difficult concept (poll, sleep, idle,
496 idle_upto).
497 - add Coro::AnyEvent::readable/writable functions.
498 - clarify Coro::EV/Event/AnyEvent manpages.
499 - free per-thread global scalars in the thread calling ->cancel, to
500 avoid crashes when $_, $@ etc., are magical but some of those
501 had already been freed.
502 - "unexperimentalise" the callback interface for Coro::Semaphore.
503 - speed up ready queue management/context switching by using a linked
504 list instead of an array (~5-10%).
505 - implement "watch" command in Coro::Debug shells.
506 - for fun, implement time-slicing as an example in the manpage.
507 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
508 Coro::Event, use the normal AnyEvent handling instead of dieing
509 (the same is true for Coro::Handle).
510 - properly document Coro::EV::timed_io_once.
511 - avoid unneccessary ->cancel calls in Coro::Handle.
512 - maybe make it work on mingw32 with win32 backend
513 (based on patch by Yasuhiro Matsumoto).
514
5155.132 Fri May 29 09:00:39 CEST 2009
516 - do not keep a reference to the argument itself in
517 Coro::Semaphore::guard, as it could change later.
518 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
519 should support a prepare callback.
520
5215.131 Mon Mar 16 23:20:37 CET 2009
522 - implement and document Coro->suspend, Coro->resume.
523 - fix Coro::Select implementation to not (often) close
524 the passed file descriptors (testcase provided by pippijn).
525
5265.13 Mon Dec 15 21:51:42 CET 2008
527 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
528 - don't set diehook to C<undef> but instead to NULL, to avoid
529 spurious warnings.
530 - fix a lot of bugs in Coro::SemaphoreSet.
531 - Coro::SemaphoreSet will less often create a semaphore needlessly.
532 - add Coro::SemaphoreSet::count and wait methods.
533 - take advantage of the new Guard module.
534 - deprecate Coro::guard.
535 - try to fix the dreaded 01_unblock tests once more. I hate it when
536 testsuites need more fixing than the code they are supposed to test.
537 - croak in more cases when a required callback isn't resolvable.
538 - fix some minor issues in Coro::State->call/eval.
539 - use current coroutine context instead of a temporary one
540 when temporarily switching to another coroutine.
541 - do not call C-level on_destroy handlers during global destruction,
542 to avoid needless segfaults.
543
5445.12 Sun Dec 7 13:30:38 CET 2008
545 - add default config for MirOS, which seems to be a bug-to-bug
546 compatible fork of openbsd ("world domination by releasing
547 openbsd cvs before the openbsd folks do it" or so :).
548 - free_padlist did destroy the names pad, not good, but didn't
549 seem to bother perl - this could fix issues such as eval ""
550 inside a function called from multiple coroutines.
551 - use a different method to detect destruction time.
552 - be more careful when freeing padlists just before global
553 destruction.
554 - fixed and expanded the call/cc example.
555 - renamed _terminate to _coro_run.
556 - new method Coro::Channel->shutdown.
557 - try pthreads on openbsd <4.4 (broken sigaltstack, will
558 pthreads fare better?).
559 - be less picky about destroying "a" running coroutine.
560
5615.11 Tue Nov 25 21:49:05 CET 2008
562 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
563 working code with failed assertions, introducing more bugs than
564 it fixes, requiring elaborate workarounds :(
565
5665.1 Mon Nov 24 08:54:59 CET 2008
567 - wrote a small introductory tutorial - Coro::Intro.
568 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
569 - Coro::Select did errornously dup the file descriptors
570 and didn't work with all AnyEvent backends.
571 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
572 LWP data transfers.
573 - disassociate c contexts from coro objects - this is agruably more
574 correct, but mostly allows sharing of cctxs between coro and state
575 objects, for added memory savings and speed increases.
576 - bumped $Coro::POOL_RSS up to 32kb by default.
577 - no longer set the optype to OP_CUSTOM, as B::* understandably
578 doesn't like this very much (and we *are* a type of entersub).
579 - implement state cloning, just to prove that call/cc can be done.
580 - automatically load Coro::AnyEvent in Coro::Handle.
581 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
582 do not have this method (and don't need it either).
583 - speed up generic anyevent methods in Coro::Handle by using rouse
584 callbacks.
585 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
586 others. It also makes the debugger happier, as you can trace
587 through the idle threads now.
588 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
589 - eg/event was pretty broken.
590 - better 5.8.6 compatibility.
591
5925.0 Thu Nov 20 10:35:05 CET 2008
593 - NEW ARCHITECTURE: use the latest 4.x version if you experience
594 stability issues.
595 - bump API version to 7 - all dependents must be recompiled.
596 - removed timed_* functions - they were not being used anyways
597 and should be replaced by a more generic mechanism -
598 and were annoying to support anyways :)
599 - removed SemaphoreSet's waiter method - use sem method instead.
600 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
601 - async_pool did free a scalar value twice
602 ("Attempt to unreference...").
603 - fix a longstanding bug where calling terminate on a coro that
604 was waiting for a semaphore that was just becoming available
605 would cause a deadlock (semaphore would get into a state where
606 it was available but waiters were still blocked).
607 - calling throw on a coroutine that is waiting for a semaphore will
608 no longer make it acquire the semaphore (and thus leak a count).
609 - perl's process emulation is now not even theoretically supported
610 anymore.
611 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
612 conversion of callback-style to blocking-style.
613 - new methods $coro->schedule_to and ->cede_to, to specifically
614 schedule or cede to a specific coroutine.
615 - new function Coro::Semaphore::wait.
616 - use named constants in Coro::Channel (Richard Hundt).
617 - directly patch the entersub opcode calling SLF functions (cede,
618 transfer and so on). this does speed up context switching, but
619 more importanly, it frees us from the hardcoded behaviour of
620 entersub, so we might actually be able to return something from
621 those functions and atcually create new ones.
622 - take advantage of __builtin_frame_address on gcc.
623 - expose THX in coroapi (not sure whether this was a wise decision,
624 as "threaded" perls are running at half speed anyways).
625 - implement execute_slf (schedule-like-function) interface that makes
626 it possible to implement schedule-like-functions in XS.
627 - use new SLF interface to massively speed up Coro::EV by roughly a
628 factor of two.
629 - used new SLF interface to massively speed up Coro::Semaphore by a
630 factor of three.
631 - used new SLF interface to speed up Coro::AIO by roughly a factor of
632 four and reduce its memory usage considerably.
633 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
634 for a nice speedup and vastly more correct behaviour. Also implement
635 a new method "sem" to get at the underlying semaphore object.
636 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
637 (in comparison) 20-40% speedup.
638 - used new SLF interface to reimplement Coro::Signal gaining
639 some unknown (because I was too lazy), but certain, speedup, and also
640 making signals reliable for the first time.
641 - used new SLF interface and other optimisations to speed up async_pool
642 by a factor of two. It also doesn't rely on perl's exception mechanism
643 to exit anymore. The overhead for terminating an async_pool, coro over
644 a normal async is now very small.
645 - sped up coroutine creation/destruction by 40%.
646 - forgot to include Coro/libcoro/README in the dist for all these years.
647 - work around a freebsd pthreads bug (manual testcancel is required as
648 pthread_cond_wait isn't a cancellation point on freebsd).
649 - use new rouse functions to speed up and simplify Coro::BDB.
650 - make "prefer perl native functions" work with threaded perls.
651 - condense Coro::Debug ps output, hint at v and w flags.
652 - (libcoro) lots of minor cleanups and portability improvements.
653
6544.914 Wed Nov 19 12:54:18 CET 2008
655 - fix a disastrous bug in the readline optimisation
656 introduced in 4.801.
657
6584.913 Sat Nov 15 07:58:28 CET 2008
659 - async_pool did free a scalar value twice
660 ("Attempt to unreference...").
661
6624.912 Thu Nov 13 18:31:23 CET 2008
663 - minor cleanups.
664 - use much larger stacks on linux and perl < 5.8.8.
665 - Coro::Debug::new_unix_server did not unlink the socket
666 when destroyed.
667
6684.911 Tue Nov 11 04:26:17 CET 2008
669 - "port" to threaded perls.
670
6714.91 Mon Nov 10 05:36:38 CET 2008
672 - the ->throw exception object no longer leaks.
673 - creating a new cctx leaked a scopestack entry (memleak).
674 - new coroutines didn't get created with a zero flags field
675 (unknown impact).
9 - calling ->throw on a not-yet-started coroutine should now work 676 - calling ->throw on a not-yet-started coroutine should now work
10 instead of being ignored. 677 instead of being ignored.
11 - typo: new coroutines didn't get created with a zero flags field 678 - ->throw is now supported on Coro::State objects.
12 (unknown impact).
13 - clean up cctx creation code a bit. 679 - clean up cctx creation code a bit.
680 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
14 681
154.9 Sat Nov 8 17:45:27 CET 2008 6824.9 Sat Nov 8 17:45:27 CET 2008
16 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there). 683 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
17 - (libcoro) no longer leak threads in the experimental pthread backend, 684 - (libcoro) no longer leak threads in the experimental pthread backend,
18 also speed it up considerably. 685 also speed it up considerably.
19 - (libcoro) do not rely on makecontext passing void *'s unscathed. 686 - (libcoro) do not rely on makecontext passing void *'s unscathed.
20 - fix compiletime dependencies on libcoro in the Makefile. 687 - fix compiletime dependencies on libcoro in the Makefile.
21 - cctx_count wasn't always updated properly. 688 - cctx_count wasn't always updated properly.
… …
83 - remove debugging code related to MgPV_nolen_const, also try to 750 - remove debugging code related to MgPV_nolen_const, also try to
84 make it compile with perl 5.8.6 (yes, apple apparently loves 751 make it compile with perl 5.8.6 (yes, apple apparently loves
85 outdated software). Reported by John S. 752 outdated software). Reported by John S.
86 753
874.744 Tue Jul 8 22:06:35 CEST 2008 7544.744 Tue Jul 8 22:06:35 CEST 2008
88 - correctly provide default DIE/WARN handlers as documented. 755 - correctly provide default DIE/WARN handlers as documented.
89 - also overwrite PL_vtbl_sigelem.svt_clear, even though current 756 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
90 implementations inside perl work fine for us. 757 implementations inside perl work fine for us.
91 758
924.743 Mon Jun 16 00:21:57 CEST 2008 7594.743 Mon Jun 16 00:21:57 CEST 2008
93 - when using Coro::EV without running EV::loop it could 760 - when using Coro::EV without running EV::loop it could
… …
115 - sprinkle "no warnings" freely over everything, also suppress 782 - sprinkle "no warnings" freely over everything, also suppress
116 warnings for some other modules. 783 warnings for some other modules.
117 - fix typo in WSAEWOULDBLOCK. 784 - fix typo in WSAEWOULDBLOCK.
118 785
1194.72 Sun May 25 05:14:36 CEST 2008 7864.72 Sun May 25 05:14:36 CEST 2008
120 - tweak META.yaml a bit, unfortunately, there is no documented way 787 - tweak META.yaml a bit, unfortunately, there is no documented way
121 to have optional dependencies with CPAN. doh :( 788 to have optional dependencies with CPAN. doh :(
122 - avoid running some tests on windows because they would fail due to 789 - avoid running some tests on windows because they would fail due to
123 perl bug (broken fork, broken pipes...). 790 perl bug (broken fork, broken pipes...).
124 - work around perl on windows bugs where perl returns undocumented 791 - work around perl on windows bugs where perl returns undocumented
125 error codes for sysread, syswrite etc. by taking advantage 792 error codes for sysread, syswrite etc. by taking advantage
… …
129 - use unix domain sockets in testsuite to work around 796 - use unix domain sockets in testsuite to work around
130 common perl implementation bugs on widows (they are emulated by 797 common perl implementation bugs on widows (they are emulated by
131 tcp sockets on windows. ugh.) 798 tcp sockets on windows. ugh.)
132 799
1334.71 Sat May 24 20:01:27 CEST 2008 8004.71 Sat May 24 20:01:27 CEST 2008
134 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()"). 801 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
135 - take advantage of async name resolution of AnyEvent::Util. 802 - take advantage of async name resolution of AnyEvent::Util.
136 - work around brutal inet_aton override in Coro::LWP. 803 - work around brutal inet_aton override in Coro::LWP.
137 - take advantage of the readyhook in Coro::EV, for smoother 804 - take advantage of the readyhook in Coro::EV, for smoother
138 scheduling. 805 scheduling.
139 806
1404.7 Sun May 11 00:32:19 CEST 2008 8074.7 Sun May 11 00:32:19 CEST 2008
141 - completely reworked the Coro manpage. 808 - completely reworked the Coro manpage.
142 - added Coro::AnyEvent, generic event loop integration. 809 - added Coro::AnyEvent, generic event loop integration.
143 - implement cancel, ready and kill commands in Coro::Debug. 810 - implement cancel, ready and kill commands in Coro::Debug.
144 - document find_coro in Coro::Debug. 811 - document find_coro in Coro::Debug.
145 - incompatible change: rename has_stack to has_cctx. 812 - incompatible change: rename has_stack to has_cctx.
146 - Coro::AIO and Coro::BDB no longer force event model detection, 813 - Coro::AIO and Coro::BDB no longer force event model detection,
147 use AnyEvent::AIO and AnyEvent::BDB. 814 use AnyEvent::AIO and AnyEvent::BDB.
… …
271 938
2724.11 Thu Oct 11 02:40:24 CEST 2007 9394.11 Thu Oct 11 02:40:24 CEST 2007
273 - port to threaded perls. 940 - port to threaded perls.
274 941
2754.1 Thu Oct 11 02:38:16 CEST 2007 9424.1 Thu Oct 11 02:38:16 CEST 2007
276 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now 943 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
277 be local to each coro (see Coro::State). 944 be local to each coro (see Coro::State).
278 - incompatible change: for very deep reasons, cede and cede_notself 945 - incompatible change: for very deep reasons, cede and cede_notself
279 cannot return anything, so nothing will be returned. 946 cannot return anything, so nothing will be returned.
280 - possibly bring back 5.10 compatibility (untested). 947 - possibly bring back 5.10 compatibility (untested).
281 - work around stupid (and wrong) warning on 5.10 :(. 948 - work around stupid (and wrong) warning on 5.10 :(.
… …
353 but stateful semantics. 1020 but stateful semantics.
354 - fixed a lot of typos in Coro.pm (patch submitted by David 1021 - fixed a lot of typos in Coro.pm (patch submitted by David
355 Steinbrunner, which applied flawlessly). 1022 Steinbrunner, which applied flawlessly).
356 1023
3573.6 Sat Apr 14 17:13:31 CEST 2007 10243.6 Sat Apr 14 17:13:31 CEST 2007
358 - added some bugfixes to get eg/myhttpd working again. 1025 - added some bugfixes to get eg/myhttpd working again.
359 - added Coro::Storable for often-cede'ing freeze/thaw. 1026 - added Coro::Storable for often-cede'ing freeze/thaw.
360 - try to do a clean exit when a coroutine calls exit 1027 - try to do a clean exit when a coroutine calls exit
361 (EXPERIMENTAL). 1028 (EXPERIMENTAL).
362 - got rid of indirect call through _coro_init. 1029 - got rid of indirect call through _coro_init.
363 - updated the partly antique examples in eg/ to 1030 - updated the partly antique examples in eg/ to

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