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Comparing Coro/Changes (file contents):
Revision 1.357 by root, Thu May 29 18:05:53 2008 UTC vs.
Revision 1.685 by root, Wed Mar 11 09:47:16 2020 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: __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?
10
11TODO: State.xs could short-circuit some macros such as CORO_EXECUTE_SLF
12TODO: use frame->destroy to improve Coro::EV
13
146.56 Thu Feb 20 19:40:07 CET 2020
15 - Coro::EV::time*once functions used ev_once, which is not cancelable.
16 This could cause problems due to I/O watchers not being stopped up
17 on exceptions/cancellation.
18
196.55 Fri Jul 19 17:28:09 CEST 2019
20 - Coro::RWLock woke up only one reader instead of all after a wrlock
21 (analyzed and patch by Maxim Skorobogatov).
22 - slightly improved documentation of Coro::RWLock and RWLock testcase.
23 - quickly (re)-ported to minix 3.3 before minix crashed again.
24
256.54 Sun Dec 16 11:06:07 CET 2018
26 - reinstate Coro::Select::select prototype - it breaks more than it fixes.
27
286.53 Sun Dec 16 10:33:15 CET 2018
29 - the autogenerated prototypes of Coro::AIO now add ";" at the end
30 to avoid generating named unary operators and messing up parsing
31 (mostly affects aio_mlockall 4 | 8 which was parsed as
32 (aio_mlockall 4) | 8).
33 - do not use a prototype for select in Coro::Select, as CORE::select also
34 doesn't have one.
35
366.52 Tue Aug 14 18:49:43 CEST 2018
37 - libcoro update: allow sharing of coro threads using the pthreads
38 backend among different pthreads, as is required by Coro::Multicore.
39 - always allow ->call and ->eval when the coro is the current coroutine. this
40 makes it possible, among other things, to call these on $Coro::main.
41 - minor code cleanups.
42
436.514 Thu Aug 31 18:25:31 CEST 2017
44 - safe_cancel no longer croaks when called on already-destroyed
45 thread, but instead "just works".
46
476.513 Sat Jul 15 01:18:51 CEST 2017
48 - experimental 5.22 comaptibility changes (PadlistNAMES).
49 - removed attributes example and made sure the other examples
50 still work.
51 - fix some statevar types for newer perls, should be of no consequence.
52
536.512 Fri Jul 14 05:03:17 CEST 2017
54 - seems to pass test suite down till 5.8.9, so make this the
55 minimum requirement in Makefile.PL.
56 - experimental 5.24 compatibility changes (SUB_ARGARRAY).
57 - experimental 5.26 compatibility changes (PL_comppad -> PADOFFSET).
58 - disable FORTIFY_SOURCE to avoid broken (but well-intentioned)
59 fortified longjmp variants in some libcs.
60 - re-try JIT allocation without PROT_EXEC, to hopefully improve
61 portability (still doesn't seem to work around broken selinux
62 mmap everywhere).
63 - speling fixes (Xavier Guimard).
64
656.511 Sun Jun 26 23:44:50 CEST 2016
66 - make it compile with threaded perls again.
67 - simplify and speed up __DIE__ and __WARN__ handling.
68
696.51 Sat Jun 25 20:57:20 CEST 2016
70 - 6.5 release didn't compile on most older perls due to
71 a logic error enabling experimental 5.24 code for all versions.
72 - since various broken or deficient patches float around
73 to work around the vtbl API breakage in perl, let's provide
74 our own workaround, which seems to be much less invasive
75 and more compatible than the approaches seen so far. YMMV.
76 - work around assertion failure in perl_destruct on 5.24
77 (analyzed by Dave Mitchell).
78
796.5 Wed Jun 22 22:23:50 CEST 2016
80 - swap_sv swapping order was not symmetrical, causing
81 wrong swaps when swap_sv was used multiple times on the
82 same sv in the same thread.
83 - swap_sv calls can now be undone by calling it again
84 with the same variables.
85 - swap_sv calls will now be undone in async_pool threads.
86 - split Coro::Semaphore::up/adjust into separate xs functions
87 for better error reporting, at slight codesize increase.
88 - (libcoro) arm assembly support, please test and report.
89 - adjust to PL_savestack changes in perl 5.24 (adapted from
90 the debian patch, which unfortunately gets it wrong).
91
926.49 Sat Oct 17 01:40:12 CEST 2015
93 - throwing an exception to a thread waiting in
94 Coro::Handle using Coro::EV did not stop the watchers,
95 causing the next call to fail (testcase by Martin Pritchard).
96 - bump minimum perl version to 5.10.
97
986.48 Sun Oct 4 19:03:51 CEST 2015
99 - fix memory leak when Coro::Handle uses Coro::EV internally
100 (testcase by Sten Sten).
101 - update code to libev 4 API (internally, Coro still used the
102 version 3 API calls).
103 - remove unused hv_sig.
104
1056.47 Sat Jul 11 03:58:20 CEST 2015
106 - swap_svs - NVs can be in the SV head beginning with 5.20.
107
1086.46 Tue Jun 30 14:36:30 CEST 2015
109 - restore portability to perls with windows fork emulation
110 (patch by Petr Písař).
111
1126.45 Tue Jun 30 01:40:08 CEST 2015
113 - restore portability to perl 5.16 and below.
114
1156.44 Tue Jun 30 00:41:54 CEST 2015
116 - avoid segfaulting (or worse) when tracing a canceled thread.
117 - the Event module silently broke it's public hook API, causing
118 failures on perls compiled with -Duselongdouble. Requiring
119 the latest version of Event because I don't know which release
120 changed this (it's not mentioned in the ChangeLog).
121 - allow xs level enterleave hooks via CoroAPI.
122
1236.43 Thu Jun 4 15:38:14 CEST 2015
124 - use stability canary.
125 - port to stableperl-5.22.0-1.001.
126 - update libecb.
127
1286.42 Wed Feb 11 20:29:52 CET 2015
129 - Coro::SemaphoreSet->try did not actually work (analyzed by
130 SATO Kentaro).
131 - upgrade libecb to be C11 compliant.
132
1336.41 Sat Sep 6 22:08:46 CEST 2014
134 - restore portability to perl 5.8.x.
135 - give new Coro's a valid GvHV(PL_hintgv) - this is slow and takes
136 up some memory, but fixes "use feature" and similar modules
137 when used inside a Coro.
138 - allow zero as argument to Coro::Channel to mean the same thing
139 as no argument. this works with older versions as well,
140 but wasn't legal until now.
141 - slightly better c header file detection.
142
1436.39 Mon Jun 2 00:00:08 CEST 2014
144 - work around more incompatible changes in 5.20.
145
1466.38 Sun Jun 1 21:54:23 CEST 2014
147 - check that perl slots actually have enough space to hold
148 interpreter variables.
149 - untested port to perl 5.19 (64 bit tmps indices) (reported
150 by Andreas König).
151 - croak when cancel is called without a thread context.
152
1536.37 Tue Mar 4 13:27:33 CET 2014
154 - *sigh*, removed leftover debugging code from debugging a
155 perl bug, of all things.
156
1576.36 Tue Mar 4 07:11:59 CET 2014
158 - semaphores would not clear the destroy hook when interrupted
159 by ->throw, causing segfaults or worse.
160 - ->throw on a thread waiting for a semaphore did not acquire
161 the semaphore, but also didn't wake up other waiters,
162 possibly causing a deadlock.
163 - "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
164 to report a full stacktrace, which should help find out
165 where the actual call is.
166 - "atomically" destroy data in slf_destroy, because it is
167 the right thing to do, just in case.
168 - disable ecb.h libm dependency, to compile on ancient systems
169 or under adverse conditions.
170
1716.33 Mon Nov 18 11:26:27 CET 2013
172 - do not crash when freeing padlists with holes (in 5.18).
173 - tentative SVt_BIND 5.19 port/fix.
174
1756.32 Tue Nov 5 15:35:35 CET 2013
176 - use a new algorithm to derive padlists for perl 5.18. The old
177 one could lead to 0-pointer accesses inside perl (reported
178 by Darin McBride).
179
1806.31 Thu May 9 07:39:48 CEST 2013
181 - Coro::AIO requests would crash if the thread was ready'd
182 while the request was ongoing.
183
1846.29 Wed May 8 02:55:18 CEST 2013
185 - when an on_destroy handler destructs the coro currently being
186 destructed a perl scalar could be accessed after being freed,
187 likely causing a crash.
188
1896.28 Wed Mar 6 06:58:02 CET 2013
190 - clean remnants of existing __DIE__ and __WARN__ handlers so
191 they lose their magic and will not cause segfaults later
192 (testcase by Andrey Sagulin).
193 - improved Coro::State documentation a bit.
194 - Coro::Debug::command now flushes the output.
195 - add hack detection code for x32 abi, because the braindead slugs
196 who designed that made it look exactly like x86_64 without
197 providing proper compile time symbols to test for it. as a result,
198 this detection cannot work reliably.
199 - valgrind stack registering was broken.
200 - do not rely on Time::HiRes anymore in Coro::Debug.
201
2026.23 Fri Dec 7 23:36:37 CET 2012
203 - use experimental fiber implementation on native windows
204 perls.
205 - use sizeof (void *) as multiplication factor for stack sizes,
206 to accomodate the totally braindamaged microsoft 64 bit "os".
207 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
208 activeperl 5.16 crashes when PerlIO_define_layer is called due
209 to some bug in the perl dll, strawberry perl at least passes
210 the testsuite.
211 - implement Coro::Handle->peeraddr/host/port, for slightly
212 improved compatibility with LWP.
213 - implement 5.17 compatibility by almost blindly applying a
214 good-looking patch by Father Chrysostomos.
215 - move stack management functions into libcoro 3.
216 - libcoro version 3 "released".
217 - support magic values as timed_io_once args.
218 - recommend AnyEvent 7+ or EV 4+, also require EV
219 version 4 or newer for Coro::EV.
220
2216.10 Tue Oct 9 01:14:27 CEST 2012
222 - updated ecb.h, it had a typo that caused it to not compile on many
223 big endian systems (reported by many people).
224 - disable memory fences in ecb.h to improve portability.
225
2266.09 Sat Oct 6 23:25:02 CEST 2012
227 - Coro::EV I/O watchers were not interruptible by exceptions
228 (Coro::State::throw) (testcase by sten).
229 - ->throw now puts threads into the ready queue, as this seems to
230 be expected by existing code, and code that doesn't cope with spurious
231 wakeups needs fixing anyway.
232 - use fd -1 in mmap.
233 - cast I32 to int in error message printf.
234 - warn about broken so-called "hardened" kernels.
235
2366.08 Fri Apr 13 12:05:47 CEST 2012
237 - be more aggressive about exiting like perl does - formerly,
238 exiting from the non-main thread would not execute END blocks.
239
2406.07 Fri Nov 11 21:21:48 CET 2011
241 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
242 - update ecb.h.
243
2446.06 Mon Aug 8 23:59:48 CEST 2011
245 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
246 backend, which is an order of magnitude slower. unfortunately, cygwins
247 pthread implementation isn't very complete either, so allocate the stack
248 twice just to be sure.
249 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
250 in its ithreaded perl - best recompile cygwin and use the 'w'indows
251 backend for much better performance. also disable ithreads for
252 even better performance...).
253
2546.05 Thu Aug 4 21:36:36 CEST 2011
255 - blush, condvar values would not be propagated from send to recv anymore
256 (reported by Chip Salzenberg).
257 - use exponential increase for the readline buffer length in
258 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
259
2606.04 Wed Aug 3 17:15:45 CEST 2011
261 - use even more efficient and more compatible condvars for
262 compatibility to AnyEvent 6.x :)
263 - more inconsequential ecb.h updates.
264
2656.03 Wed Aug 3 11:41:30 CEST 2011
266 - change how Coro patches AnyEvent condvars for compatibility to
267 AnyEvent 6.x.
268 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
269 hasn't been included.
270
2716.02 Wed Jul 13 04:35:19 CEST 2011
272 - "improve portability to Gentoo" - gentoo manages to put perl variables
273 in memory areas that are farther than 2gb apart, which the jit couldn't
274 handle and barfed. now it's just a bit slower on gentoo and similar
275 systems.
276
2776.01 Sun Jul 3 12:31:14 CEST 2011
278 - workarounds are good, but the test for whether pthreads are used
279 was not good. this one should be better.
280 - check differently whether gcc generates cfi instructions itself.
281
2826.0 Wed Jun 29 19:43:35 CEST 2011
283 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
284 destroyed and cleaned up automatically (e.g. async { schedule }).
285 - implement a JIT compiler for part of the thread switch code,
286 which gives a 50% speed improvement on threaded perls, and
287 about 4% on non-threaded perls (so threaded perls now finally
288 reach about half the speed of non-threaded perls).
289 - slightly modernise Coro::Intro, add section about rouse functions.
290 - avoid DEFSV and ERRSV, giving another 10% improvement
291 in thread switching.
292 - Coro::State->is_destroyed is now called is_zombie.
293 - implement a Coro->safe_cancel method that might fail, but
294 cancels in a "safer" way if it succeeds.
295 - add preliminary support for DEBUGGING perls.
296 - get rid of two hash-accesses when initialising a new Coro - this
297 speeds up coro creation by almost a factor of two.
298 - croak when a coro that is being cancelled tries to block
299 (e.g. while executing a guard block), instead of crashing or
300 deadlocking.
301 - use a more robust and also faster method to identify Coro::State
302 objects - speeds up everything a bit.
303 - implement Coro->cancel in XS for a 20% speed improvement, and to
304 be able to implement mutual cancellation.
305 - speed up context switches by a percent or two by more efficiently
306 allocating context stack entries.
307 - implement Coro->join and Coro->on_destroy in XS for a speedup and
308 a reduction in memory use.
309 - cancelling a coro while it itself is cancelling another coro is
310 now supported and working, instead of triggering an assertion.
311 - be a bit more crash-resistant when calling (buggy) on_destroy
312 callbacks (best effort).
313 - move on_destroy into the slf_frame, to allow extension slf
314 functions to have destructors.
315 - get rid if coro refcounting - simply crash in other interpreter
316 threads by nulling the pointers on clone.
317 - simplify warn/die hook handling when loading Coro - the convoluted
318 logic seems to be no longer neccessary.
319 - use libecb instead of our own home-grown gcc hacks.
320 - document alternatives to Coro::LWP. Please use them :)
321 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
322 sigaltstack. Really. wine suffers from it, erlang suffers from it,
323 and it's known since at least 2006.
324
3255.372 Wed Feb 23 06:14:30 CET 2011
326 - apparently mingw doesn't provide a working gettimeofday, try to
327 work around that by relying on Time::HiRes (indirectly brought to
328 my attention by Max Maischein).
329 - fix some portability issues when Time::HiRes was used.
330
3315.371 Mon Feb 21 14:36:08 CET 2011
332 - backport to windows process emulation code again.
333
3345.37 Sat Feb 19 07:49:44 CET 2011
335 - add a big "Coro thread life cycle" section to "man Coro".
336 - try a tentative workaround against the breakage that 5.13 has
337 introduced without depreciation period. sigh.
338 - no longer use Time::HiRes if gettimeofday is available, which
339 saves quite a lot of memory.
340
3415.36 Sun Feb 13 05:33:41 CET 2011
342 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
343 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
344 method call.
345 - undocument Coro::Timer::sleep and obsolete whole module.
346 - optimise Coro::Timer::timeout memory and cpu usage.
347 - slightly updated Coro::Intro for recent changes.
348 - do not initialise PL_dirty anymore.
349
3505.25 Thu Nov 11 01:08:39 CET 2010
351 - try a different approach on netbsd - netbsd 5 finally has marginally
352 working pthreads, but still broken ucontext/sigaltstack.
353 - openbsd 4.8 finally got their act together, Coro works out of the box
354 with asm, setjmp and pthreads (no change, just informational).
355
3565.24 Sat Oct 23 11:27:12 CEST 2010
357 - port to the EV 4.0 API.
358 - work around bugs in mingw32, making strawberry perl work
359 out of the box.
360 - correctly modify Coro::AIO function prototypes
361 so that they reflect the "no optional parameters" rule.
362 - "ported" libcoro to C++.
363
3645.23 Mon May 17 18:50:42 CEST 2010
365 - be more resistant to ordering changes when initialising
366 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
367 Waldorf).
368 - document that perl 5.12 deliberately removed support for cloning.
369
3705.22 Wed Apr 14 03:55:35 CEST 2010
371 - correctly return udnef on errors in Coro::Handle::read/write
372 (testcase by Marc Mims).
373 - convert Coro::Util into a "perl compatibility wrapper" - the functions
374 are less useful now, but are drop-in replacements for existing
375 functions, listing better alternatives in the documentation. This also
376 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
377 with Coro::Util::inet_aton.
378 - do not override $Coro::idle unconditionally in Coro.pm, as other
379 modules could have provided their own idle coro already
380 (for exmaple, Coro::AnyEvent).
381 - fix Coro::Util::gethost* functions.
382 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
383
3845.21 Wed Dec 16 07:19:51 CET 2009
385 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
386 together.
387 - add some examples on how to combine other event loops with Coro in
388 Coro::AnyEvent, and how to run it (and not to block). Seems to be
389 the most common source of confusion.
390 - try to catch people naively blocking in an event callback.
391 - work around the perl filehandle bug issue in conjunction with
392 older common::sense (as indirectly pointed out by ZSystem).
393 - clarify the "not from signal handlers" section.
394
3955.2 Sun Oct 4 14:54:24 CEST 2009
396 - Coro::Storable destroyed the prototypes of the functions it wrapped.
397 - export rouse_cb and rouse_wait by default now.
398 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
399 - new method $state->swap_sv.
400 - added section on "windows process emulation" to the manpage,
401 after a not-so-fruitful (nor-friendly) "discussion" with chip
402 salzenberg (discussion implies arguments, but his only arguments
403 were ad-hominems, one wonders why he started it in the first
404 place). I hope this explains it well enough for him to understand,
405 and maybe well enough for others to understand.
406 - use common::sense everywhere now.
407 - idle callbacks are no longer supported, use idle coros instead.
408 - print a thread listing when a deadlock is detected.
409
4105.17 Sat Aug 22 23:09:31 CEST 2009
411 - work around a bug in the perl debugger causing crashes
412 when running under the debugger by marking _pool_handler as nodebug.
413 - speed up Coro::async considerably.
414 - try some hacks to get netbsd to work "more often" - their broken
415 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
416 - convert Coro to AE 5.0 API.
417
4185.162 Tue Jul 28 04:04:03 CEST 2009
419 - perl 5.8.2 is now minimum requirement.
420 - skip t/19_handle.t on broken windows perls.
421
4225.161 Wed Jul 22 04:47:38 CEST 2009
423 - Coro::AnyEvent::poll could have a different prototype when EV was
424 used as backend (analyzed by Tatsuhiko Miyagawa).
425 - Coro::AnyEvent errornously initialised the event loop when loaded,
426 not on demand.
427 - try to workaround rare */t/01_unblock.t failures.
428
4295.16 Tue Jul 21 01:44:37 CEST 2009
430 - Coro::AnyEvent failed to hook into the event loop
431 when no threads had been readied between detecting
432 the event loop and actually running it.
433 - considerably speed up Coro::Select by taking avdantage
434 of AnyEvent > 4.8 and some other optimisations.
435 - implement paragraph readline mode in Coro::Handle
436 (based on patches by Zsbán Ambrus).
437 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
438 and analyzed by Yasuhiro MATSUMOTO).
439 - clarified libcoro license and copyright.
440 - someone stole my EXTRA_META!!!
441 - implement Coro::Select::patch_pp_sselect and it's brother,
442 for hardcode select overriding.
443
4445.151 Mon Jul 6 05:41:57 CEST 2009
445 - backport to windows process emulation code again (patch by
446 Yasuhiro MATSUMOTO).
447 - slightly update Coro::MakeMaker.
448
4495.15 Tue Jun 30 10:28:06 CEST 2009
450 - deprecate Coro::Socket, document how to get ipv6 support via
451 AnyEvent::Socket instead.
452 - implement signal->wait ($cb) interface, similar to semaphores.
453 - work around SvOK not supporting getmagic, so we have to getmagic
454 to test for undef :/ (reported by Matthias Waldorf).
455 - load Coro::AnyEvent in all modules using AnyEvent.
456 - work around perl corrupting our internal data structures,
457 reported by Tokuhiro Matsuno.
458 - enable per-coroutine real and cpu time gathering
459 (Coro::State::enable_times).
460
4615.14 Wed Jun 24 01:37:48 CEST 2009
462 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
463 as this seems to have been a difficult concept (poll, sleep, idle,
464 idle_upto).
465 - add Coro::AnyEvent::readable/writable functions.
466 - clarify Coro::EV/Event/AnyEvent manpages.
467 - free per-thread global scalars in the thread calling ->cancel, to
468 avoid crashes when $_, $@ etc., are magical but some of those
469 had already been freed.
470 - "unexperimentalise" the callback interface for Coro::Semaphore.
471 - speed up ready queue management/context switching by using a linked
472 list instead of an array (~5-10%).
473 - implement "watch" command in Coro::Debug shells.
474 - for fun, implement time-slicing as an example in the manpage.
475 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
476 Coro::Event, use the normal AnyEvent handling instead of dieing
477 (the same is true for Coro::Handle).
478 - properly document Coro::EV::timed_io_once.
479 - avoid unneccessary ->cancel calls in Coro::Handle.
480 - maybe make it work on mingw32 with win32 backend
481 (based on patch by Yasuhiro Matsumoto).
482
4835.132 Fri May 29 09:00:39 CEST 2009
484 - do not keep a reference to the argument itself in
485 Coro::Semaphore::guard, as it could change later.
486 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
487 should support a prepare callback.
488
4895.131 Mon Mar 16 23:20:37 CET 2009
490 - implement and document Coro->suspend, Coro->resume.
491 - fix Coro::Select implementation to not (often) close
492 the passed file descriptors (testcase provided by pippijn).
493
4945.13 Mon Dec 15 21:51:42 CET 2008
495 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
496 - don't set diehook to C<undef> but instead to NULL, to avoid
497 spurious warnings.
498 - fix a lot of bugs in Coro::SemaphoreSet.
499 - Coro::SemaphoreSet will less often create a semaphore needlessly.
500 - add Coro::SemaphoreSet::count and wait methods.
501 - take advantage of the new Guard module.
502 - deprecate Coro::guard.
503 - try to fix the dreaded 01_unblock tests once more. I hate it when
504 testsuites need more fixing than the code they are supposed to test.
505 - croak in more cases when a required callback isn't resolvable.
506 - fix some minor issues in Coro::State->call/eval.
507 - use current coroutine context instead of a temporary one
508 when temporarily switching to another coroutine.
509 - do not call C-level on_destroy handlers during global destruction,
510 to avoid needless segfaults.
511
5125.12 Sun Dec 7 13:30:38 CET 2008
513 - add default config for MirOS, which seems to be a bug-to-bug
514 compatible fork of openbsd ("world domination by releasing
515 openbsd cvs before the openbsd folks do it" or so :).
516 - free_padlist did destroy the names pad, not good, but didn't
517 seem to bother perl - this could fix issues such as eval ""
518 inside a function called from multiple coroutines.
519 - use a different method to detect destruction time.
520 - be more careful when freeing padlists just before global
521 destruction.
522 - fixed and expanded the call/cc example.
523 - renamed _terminate to _coro_run.
524 - new method Coro::Channel->shutdown.
525 - try pthreads on openbsd <4.4 (broken sigaltstack, will
526 pthreads fare better?).
527 - be less picky about destroying "a" running coroutine.
528
5295.11 Tue Nov 25 21:49:05 CET 2008
530 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
531 working code with failed assertions, introducing more bugs than
532 it fixes, requiring elaborate workarounds :(
533
5345.1 Mon Nov 24 08:54:59 CET 2008
535 - wrote a small introductory tutorial - Coro::Intro.
536 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
537 - Coro::Select did errornously dup the file descriptors
538 and didn't work with all AnyEvent backends.
539 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
540 LWP data transfers.
541 - disassociate c contexts from coro objects - this is agruably more
542 correct, but mostly allows sharing of cctxs between coro and state
543 objects, for added memory savings and speed increases.
544 - bumped $Coro::POOL_RSS up to 32kb by default.
545 - no longer set the optype to OP_CUSTOM, as B::* understandably
546 doesn't like this very much (and we *are* a type of entersub).
547 - implement state cloning, just to prove that call/cc can be done.
548 - automatically load Coro::AnyEvent in Coro::Handle.
549 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
550 do not have this method (and don't need it either).
551 - speed up generic anyevent methods in Coro::Handle by using rouse
552 callbacks.
553 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
554 others. It also makes the debugger happier, as you can trace
555 through the idle threads now.
556 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
557 - eg/event was pretty broken.
558 - better 5.8.6 compatibility.
559
5605.0 Thu Nov 20 10:35:05 CET 2008
561 - NEW ARCHITECTURE: use the latest 4.x version if you experience
562 stability issues.
563 - bump API version to 7 - all dependents must be recompiled.
564 - removed timed_* functions - they were not being used anyways
565 and should be replaced by a more generic mechanism -
566 and were annoying to support anyways :)
567 - removed SemaphoreSet's waiter method - use sem method instead.
568 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
569 - async_pool did free a scalar value twice
570 ("Attempt to unreference...").
571 - fix a longstanding bug where calling terminate on a coro that
572 was waiting for a semaphore that was just becoming available
573 would cause a deadlock (semaphore would get into a state where
574 it was available but waiters were still blocked).
575 - calling throw on a coroutine that is waiting for a semaphore will
576 no longer make it acquire the semaphore (and thus leak a count).
577 - perl's process emulation is now not even theoretically supported
578 anymore.
579 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
580 conversion of callback-style to blocking-style.
581 - new methods $coro->schedule_to and ->cede_to, to specifically
582 schedule or cede to a specific coroutine.
583 - new function Coro::Semaphore::wait.
584 - use named constants in Coro::Channel (Richard Hundt).
585 - directly patch the entersub opcode calling SLF functions (cede,
586 transfer and so on). this does speed up context switching, but
587 more importanly, it frees us from the hardcoded behaviour of
588 entersub, so we might actually be able to return something from
589 those functions and atcually create new ones.
590 - take advantage of __builtin_frame_address on gcc.
591 - expose THX in coroapi (not sure whether this was a wise decision,
592 as "threaded" perls are running at half speed anyways).
593 - implement execute_slf (schedule-like-function) interface that makes
594 it possible to implement schedule-like-functions in XS.
595 - use new SLF interface to massively speed up Coro::EV by roughly a
596 factor of two.
597 - used new SLF interface to massively speed up Coro::Semaphore by a
598 factor of three.
599 - used new SLF interface to speed up Coro::AIO by roughly a factor of
600 four and reduce its memory usage considerably.
601 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
602 for a nice speedup and vastly more correct behaviour. Also implement
603 a new method "sem" to get at the underlying semaphore object.
604 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
605 (in comparison) 20-40% speedup.
606 - used new SLF interface to reimplement Coro::Signal gaining
607 some unknown (because I was too lazy), but certain, speedup, and also
608 making signals reliable for the first time.
609 - used new SLF interface and other optimisations to speed up async_pool
610 by a factor of two. It also doesn't rely on perl's exception mechanism
611 to exit anymore. The overhead for terminating an async_pool, coro over
612 a normal async is now very small.
613 - sped up coroutine creation/destruction by 40%.
614 - forgot to include Coro/libcoro/README in the dist for all these years.
615 - work around a freebsd pthreads bug (manual testcancel is required as
616 pthread_cond_wait isn't a cancellation point on freebsd).
617 - use new rouse functions to speed up and simplify Coro::BDB.
618 - make "prefer perl native functions" work with threaded perls.
619 - condense Coro::Debug ps output, hint at v and w flags.
620 - (libcoro) lots of minor cleanups and portability improvements.
621
6224.914 Wed Nov 19 12:54:18 CET 2008
623 - fix a disastrous bug in the readline optimisation
624 introduced in 4.801.
625
6264.913 Sat Nov 15 07:58:28 CET 2008
627 - async_pool did free a scalar value twice
628 ("Attempt to unreference...").
629
6304.912 Thu Nov 13 18:31:23 CET 2008
631 - minor cleanups.
632 - use much larger stacks on linux and perl < 5.8.8.
633 - Coro::Debug::new_unix_server did not unlink the socket
634 when destroyed.
635
6364.911 Tue Nov 11 04:26:17 CET 2008
637 - "port" to threaded perls.
638
6394.91 Mon Nov 10 05:36:38 CET 2008
640 - the ->throw exception object no longer leaks.
641 - creating a new cctx leaked a scopestack entry (memleak).
642 - new coroutines didn't get created with a zero flags field
643 (unknown impact).
644 - calling ->throw on a not-yet-started coroutine should now work
645 instead of being ignored.
646 - ->throw is now supported on Coro::State objects.
647 - clean up cctx creation code a bit.
648 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
649
6504.9 Sat Nov 8 17:45:27 CET 2008
651 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
652 - (libcoro) no longer leak threads in the experimental pthread backend,
653 also speed it up considerably.
654 - (libcoro) do not rely on makecontext passing void *'s unscathed.
655 - fix compiletime dependencies on libcoro in the Makefile.
656 - cctx_count wasn't always updated properly.
657 - Coro::State::cctx_stacksize wasn't applied correctly.
658 - new function Coro::State::cctx_max_idle.
659 - the default max number of idle C contexts is now 4.
660 - (libcoro) try harder to get _setjmp/_longjmp.
661 - (libcoro) cleanup and extend the libcoro API to officially
662 allow the creation of empty source contexts.
663 - very experimental workaround for the totally broken netbsd platform.
664 - tried to hack around openbsd bugs.
665
6664.804 Wed Nov 5 16:36:00 CET 2008
667 - Coro::Debug::new_unix_server would not create a non-blocking listening
668 socket, sometimes causing freezes.
669 - (libcoro) fix misaligned stack points for setjmp and assembly
670 methods, which can cause crashes on x86/x86_64 with a sufficiently
671 aggressive compiler.
672 - new function: Coro::Debug::new_tcp_server.
673 - move ->throw into the Coro class because it only works on coro objects.
674
6754.803 Mon Nov 3 17:16:12 CET 2008
676 - (libcoro) use a global asm statement to become independent of gcc
677 otpimisations for CORO_ASM (thanks to pippijn for the idea).
678 - try to workaround yet another broken bsd, this time dragonfly.
679
6804.802 Thu Oct 30 10:56:12 CET 2008
681 - support -fno-omit-frame-pointer on x86 with the assembly method.
682 - tune 01_unblock.t tests a bit.
683
6844.801 Wed Oct 22 18:33:37 CEST 2008
685 - improve readline speed for very long "lines".
686 - backport to 5.8.8.
687
6884.8 Thu Oct 2 13:34:40 CEST 2008
689 - new function Coro::AIO::aio_wait.
690 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
691 - greatly speed up and reduce memory usage of Coro::AIO requests.
692 - implement some other µ-optimisations.
693
6944.749 Mon Sep 29 14:40:12 CEST 2008
695 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
696
6974.748 Sat Sep 27 14:03:19 CEST 2008
698 - implement, but do not document, PerlIO::cede(granularity).
699 - Coro::Storable forgot to wrap Storable::pstore.
700 - work around the multitude of leaks and memory corruption
701 bugs in PerlIO::via by using our own C-level perliol. As a side
702 effect, Coro::Storable is now much, much, much faster.
703
7044.747 Tue Sep 23 01:59:41 CEST 2008
705 - fix a per-cv memleak (one empty array was leaked per
706 code reference).
707 - avoid a crash in coro->call|rss when the coroutine was already
708 destroyed (most noticably when using Coro::Debug::ps :)
709 - also protect *Storable::FILE.
710 - push up default storable granularity to 20ms.
711
7124.746 Sun Sep 21 03:22:20 CEST 2008
713 - be more insistent on locking Storable against reentrancy
714 in Coro::Storable.
715 - move swap_def?v and throw to Coro::State, as documented.
716
7174.745 Thu Jul 24 00:14:38 CEST 2008
718 - remove debugging code related to MgPV_nolen_const, also try to
719 make it compile with perl 5.8.6 (yes, apple apparently loves
720 outdated software). Reported by John S.
721
7224.744 Tue Jul 8 22:06:35 CEST 2008
723 - correctly provide default DIE/WARN handlers as documented.
724 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
725 implementations inside perl work fine for us.
726
7274.743 Mon Jun 16 00:21:57 CEST 2008
728 - when using Coro::EV without running EV::loop it could
729 result in busy-waiting for events, this has been fixed.
730 - reduce codesize and improve performance by using EV_DEFAULT_UC.
731
7324.742 Sat May 31 14:10:21 CEST 2008
733 - implement a workaround for (some) perl <5.8.8 versions.
734 - require EV 3.3+.
735
7364.741 Fri May 30 23:33:09 CEST 2008
737 - tell netbsd how utterly broken their imitation of an OS is
738 and refuse to build by default if pthreads are in use.
739 - switch to "s" method on all bsd's by default, as their ucontext
740 stuff seems just too broken.
741 - fix a bug in Coro::Select.
7 742
84.74 Thu May 29 20:05:31 CEST 2008 7434.74 Thu May 29 20:05:31 CEST 2008
9 - do not test Coro::LWP for lack of dependencies. 744 - do not test Coro::LWP for lack of dependencies.
10 - do not test Coro::Select for lack of working perls. 745 - do not test Coro::Select for lack of working perls.
11 746
… …
15 - sprinkle "no warnings" freely over everything, also suppress 750 - sprinkle "no warnings" freely over everything, also suppress
16 warnings for some other modules. 751 warnings for some other modules.
17 - fix typo in WSAEWOULDBLOCK. 752 - fix typo in WSAEWOULDBLOCK.
18 753
194.72 Sun May 25 05:14:36 CEST 2008 7544.72 Sun May 25 05:14:36 CEST 2008
20 - tweak META.yaml a bit, unfortunately, there is no documented way 755 - tweak META.yaml a bit, unfortunately, there is no documented way
21 to have optional dependencies with CPAN. doh :( 756 to have optional dependencies with CPAN. doh :(
22 - avoid running some tests on windows because they would fail due to 757 - avoid running some tests on windows because they would fail due to
23 perl bug (broken fork, broken pipes...). 758 perl bug (broken fork, broken pipes...).
24 - work around perl on windows bugs where perl returns undocumented 759 - work around perl on windows bugs where perl returns undocumented
25 error codes for sysread, syswrite etc. by taking advantage 760 error codes for sysread, syswrite etc. by taking advantage
… …
29 - use unix domain sockets in testsuite to work around 764 - use unix domain sockets in testsuite to work around
30 common perl implementation bugs on widows (they are emulated by 765 common perl implementation bugs on widows (they are emulated by
31 tcp sockets on windows. ugh.) 766 tcp sockets on windows. ugh.)
32 767
334.71 Sat May 24 20:01:27 CEST 2008 7684.71 Sat May 24 20:01:27 CEST 2008
34 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()"). 769 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
35 - take advantage of async name resolution of AnyEvent::Util. 770 - take advantage of async name resolution of AnyEvent::Util.
36 - work around brutal inet_aton override in Coro::LWP. 771 - work around brutal inet_aton override in Coro::LWP.
37 - take advantage of the readyhook in Coro::EV, for smoother 772 - take advantage of the readyhook in Coro::EV, for smoother
38 scheduling. 773 scheduling.
39 774
404.7 Sun May 11 00:32:19 CEST 2008 7754.7 Sun May 11 00:32:19 CEST 2008
41 - completely reworked the Coro manpage. 776 - completely reworked the Coro manpage.
42 - added Coro::AnyEvent, generic event loop integration. 777 - added Coro::AnyEvent, generic event loop integration.
43 - implement cancel, ready and kill commands in Coro::Debug. 778 - implement cancel, ready and kill commands in Coro::Debug.
44 - document find_coro in Coro::Debug. 779 - document find_coro in Coro::Debug.
45 - incompatible change: rename has_stack to has_cctx. 780 - incompatible change: rename has_stack to has_cctx.
46 - Coro::AIO and Coro::BDB no longer force event model detection, 781 - Coro::AIO and Coro::BDB no longer force event model detection,
47 use AnyEvent::AIO and AnyEvent::BDB. 782 use AnyEvent::AIO and AnyEvent::BDB.
… …
171 906
1724.11 Thu Oct 11 02:40:24 CEST 2007 9074.11 Thu Oct 11 02:40:24 CEST 2007
173 - port to threaded perls. 908 - port to threaded perls.
174 909
1754.1 Thu Oct 11 02:38:16 CEST 2007 9104.1 Thu Oct 11 02:38:16 CEST 2007
176 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now 911 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
177 be local to each coro (see Coro::State). 912 be local to each coro (see Coro::State).
178 - incompatible change: for very deep reasons, cede and cede_notself 913 - incompatible change: for very deep reasons, cede and cede_notself
179 cannot return anything, so nothing will be returned. 914 cannot return anything, so nothing will be returned.
180 - possibly bring back 5.10 compatibility (untested). 915 - possibly bring back 5.10 compatibility (untested).
181 - work around stupid (and wrong) warning on 5.10 :(. 916 - work around stupid (and wrong) warning on 5.10 :(.
… …
253 but stateful semantics. 988 but stateful semantics.
254 - fixed a lot of typos in Coro.pm (patch submitted by David 989 - fixed a lot of typos in Coro.pm (patch submitted by David
255 Steinbrunner, which applied flawlessly). 990 Steinbrunner, which applied flawlessly).
256 991
2573.6 Sat Apr 14 17:13:31 CEST 2007 9923.6 Sat Apr 14 17:13:31 CEST 2007
258 - added some bugfixes to get eg/myhttpd working again. 993 - added some bugfixes to get eg/myhttpd working again.
259 - added Coro::Storable for often-cede'ing freeze/thaw. 994 - added Coro::Storable for often-cede'ing freeze/thaw.
260 - try to do a clean exit when a coroutine calls exit 995 - try to do a clean exit when a coroutine calls exit
261 (EXPERIMENTAL). 996 (EXPERIMENTAL).
262 - got rid of indirect call through _coro_init. 997 - got rid of indirect call through _coro_init.
263 - updated the partly antique examples in eg/ to 998 - updated the partly antique examples in eg/ to

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