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Comparing Coro/Changes (file contents):
Revision 1.253 by root, Wed Oct 3 18:37:48 2007 UTC vs.
Revision 1.687 by root, Wed Apr 22 19:21:20 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 4TODO: channel->maxsize(newsize)?
5 (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
84.0 11TODO: State.xs could short-circuit some macros such as CORO_EXECUTE_SLF
12TODO: use frame->destroy to improve Coro::EV
136.57
14 - allow rouse_wait to be called in a different thread.
15 - slightly clarify rouse_cb/rouse_wait documentation.
16 - slightly improve rouse callback performance and memory usage.
17 - try to report correct calller when throwing exception in
18 on $condvar->recv, not a useless line in Coro::AnyEvent.
19
206.56 Thu Feb 20 19:40:07 CET 2020
21 - Coro::EV::time*once functions used ev_once, which is not cancelable.
22 This could cause problems due to I/O watchers not being stopped up
23 on exceptions/cancellation.
24
256.55 Fri Jul 19 17:28:09 CEST 2019
26 - Coro::RWLock woke up only one reader instead of all after a wrlock
27 (analyzed and patch by Maxim Skorobogatov).
28 - slightly improved documentation of Coro::RWLock and RWLock testcase.
29 - quickly (re)-ported to minix 3.3 before minix crashed again.
30
316.54 Sun Dec 16 11:06:07 CET 2018
32 - reinstate Coro::Select::select prototype - it breaks more than it fixes.
33
346.53 Sun Dec 16 10:33:15 CET 2018
35 - the autogenerated prototypes of Coro::AIO now add ";" at the end
36 to avoid generating named unary operators and messing up parsing
37 (mostly affects aio_mlockall 4 | 8 which was parsed as
38 (aio_mlockall 4) | 8).
39 - do not use a prototype for select in Coro::Select, as CORE::select also
40 doesn't have one.
41
426.52 Tue Aug 14 18:49:43 CEST 2018
43 - libcoro update: allow sharing of coro threads using the pthreads
44 backend among different pthreads, as is required by Coro::Multicore.
45 - always allow ->call and ->eval when the coro is the current coroutine. this
46 makes it possible, among other things, to call these on $Coro::main.
47 - minor code cleanups.
48
496.514 Thu Aug 31 18:25:31 CEST 2017
50 - safe_cancel no longer croaks when called on already-destroyed
51 thread, but instead "just works".
52
536.513 Sat Jul 15 01:18:51 CEST 2017
54 - experimental 5.22 comaptibility changes (PadlistNAMES).
55 - removed attributes example and made sure the other examples
56 still work.
57 - fix some statevar types for newer perls, should be of no consequence.
58
596.512 Fri Jul 14 05:03:17 CEST 2017
60 - seems to pass test suite down till 5.8.9, so make this the
61 minimum requirement in Makefile.PL.
62 - experimental 5.24 compatibility changes (SUB_ARGARRAY).
63 - experimental 5.26 compatibility changes (PL_comppad -> PADOFFSET).
64 - disable FORTIFY_SOURCE to avoid broken (but well-intentioned)
65 fortified longjmp variants in some libcs.
66 - re-try JIT allocation without PROT_EXEC, to hopefully improve
67 portability (still doesn't seem to work around broken selinux
68 mmap everywhere).
69 - speling fixes (Xavier Guimard).
70
716.511 Sun Jun 26 23:44:50 CEST 2016
72 - make it compile with threaded perls again.
73 - simplify and speed up __DIE__ and __WARN__ handling.
74
756.51 Sat Jun 25 20:57:20 CEST 2016
76 - 6.5 release didn't compile on most older perls due to
77 a logic error enabling experimental 5.24 code for all versions.
78 - since various broken or deficient patches float around
79 to work around the vtbl API breakage in perl, let's provide
80 our own workaround, which seems to be much less invasive
81 and more compatible than the approaches seen so far. YMMV.
82 - work around assertion failure in perl_destruct on 5.24
83 (analyzed by Dave Mitchell).
84
856.5 Wed Jun 22 22:23:50 CEST 2016
86 - swap_sv swapping order was not symmetrical, causing
87 wrong swaps when swap_sv was used multiple times on the
88 same sv in the same thread.
89 - swap_sv calls can now be undone by calling it again
90 with the same variables.
91 - swap_sv calls will now be undone in async_pool threads.
92 - split Coro::Semaphore::up/adjust into separate xs functions
93 for better error reporting, at slight codesize increase.
94 - (libcoro) arm assembly support, please test and report.
95 - adjust to PL_savestack changes in perl 5.24 (adapted from
96 the debian patch, which unfortunately gets it wrong).
97
986.49 Sat Oct 17 01:40:12 CEST 2015
99 - throwing an exception to a thread waiting in
100 Coro::Handle using Coro::EV did not stop the watchers,
101 causing the next call to fail (testcase by Martin Pritchard).
102 - bump minimum perl version to 5.10.
103
1046.48 Sun Oct 4 19:03:51 CEST 2015
105 - fix memory leak when Coro::Handle uses Coro::EV internally
106 (testcase by Sten Sten).
107 - update code to libev 4 API (internally, Coro still used the
108 version 3 API calls).
109 - remove unused hv_sig.
110
1116.47 Sat Jul 11 03:58:20 CEST 2015
112 - swap_svs - NVs can be in the SV head beginning with 5.20.
113
1146.46 Tue Jun 30 14:36:30 CEST 2015
115 - restore portability to perls with windows fork emulation
116 (patch by Petr Písař).
117
1186.45 Tue Jun 30 01:40:08 CEST 2015
119 - restore portability to perl 5.16 and below.
120
1216.44 Tue Jun 30 00:41:54 CEST 2015
122 - avoid segfaulting (or worse) when tracing a canceled thread.
123 - the Event module silently broke it's public hook API, causing
124 failures on perls compiled with -Duselongdouble. Requiring
125 the latest version of Event because I don't know which release
126 changed this (it's not mentioned in the ChangeLog).
127 - allow xs level enterleave hooks via CoroAPI.
128
1296.43 Thu Jun 4 15:38:14 CEST 2015
130 - use stability canary.
131 - port to stableperl-5.22.0-1.001.
132 - update libecb.
133
1346.42 Wed Feb 11 20:29:52 CET 2015
135 - Coro::SemaphoreSet->try did not actually work (analyzed by
136 SATO Kentaro).
137 - upgrade libecb to be C11 compliant.
138
1396.41 Sat Sep 6 22:08:46 CEST 2014
140 - restore portability to perl 5.8.x.
141 - give new Coro's a valid GvHV(PL_hintgv) - this is slow and takes
142 up some memory, but fixes "use feature" and similar modules
143 when used inside a Coro.
144 - allow zero as argument to Coro::Channel to mean the same thing
145 as no argument. this works with older versions as well,
146 but wasn't legal until now.
147 - slightly better c header file detection.
148
1496.39 Mon Jun 2 00:00:08 CEST 2014
150 - work around more incompatible changes in 5.20.
151
1526.38 Sun Jun 1 21:54:23 CEST 2014
153 - check that perl slots actually have enough space to hold
154 interpreter variables.
155 - untested port to perl 5.19 (64 bit tmps indices) (reported
156 by Andreas König).
157 - croak when cancel is called without a thread context.
158
1596.37 Tue Mar 4 13:27:33 CET 2014
160 - *sigh*, removed leftover debugging code from debugging a
161 perl bug, of all things.
162
1636.36 Tue Mar 4 07:11:59 CET 2014
164 - semaphores would not clear the destroy hook when interrupted
165 by ->throw, causing segfaults or worse.
166 - ->throw on a thread waiting for a semaphore did not acquire
167 the semaphore, but also didn't wake up other waiters,
168 possibly causing a deadlock.
169 - "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
170 to report a full stacktrace, which should help find out
171 where the actual call is.
172 - "atomically" destroy data in slf_destroy, because it is
173 the right thing to do, just in case.
174 - disable ecb.h libm dependency, to compile on ancient systems
175 or under adverse conditions.
176
1776.33 Mon Nov 18 11:26:27 CET 2013
178 - do not crash when freeing padlists with holes (in 5.18).
179 - tentative SVt_BIND 5.19 port/fix.
180
1816.32 Tue Nov 5 15:35:35 CET 2013
182 - use a new algorithm to derive padlists for perl 5.18. The old
183 one could lead to 0-pointer accesses inside perl (reported
184 by Darin McBride).
185
1866.31 Thu May 9 07:39:48 CEST 2013
187 - Coro::AIO requests would crash if the thread was ready'd
188 while the request was ongoing.
189
1906.29 Wed May 8 02:55:18 CEST 2013
191 - when an on_destroy handler destructs the coro currently being
192 destructed a perl scalar could be accessed after being freed,
193 likely causing a crash.
194
1956.28 Wed Mar 6 06:58:02 CET 2013
196 - clean remnants of existing __DIE__ and __WARN__ handlers so
197 they lose their magic and will not cause segfaults later
198 (testcase by Andrey Sagulin).
199 - improved Coro::State documentation a bit.
200 - Coro::Debug::command now flushes the output.
201 - add hack detection code for x32 abi, because the braindead slugs
202 who designed that made it look exactly like x86_64 without
203 providing proper compile time symbols to test for it. as a result,
204 this detection cannot work reliably.
205 - valgrind stack registering was broken.
206 - do not rely on Time::HiRes anymore in Coro::Debug.
207
2086.23 Fri Dec 7 23:36:37 CET 2012
209 - use experimental fiber implementation on native windows
210 perls.
211 - use sizeof (void *) as multiplication factor for stack sizes,
212 to accomodate the totally braindamaged microsoft 64 bit "os".
213 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
214 activeperl 5.16 crashes when PerlIO_define_layer is called due
215 to some bug in the perl dll, strawberry perl at least passes
216 the testsuite.
217 - implement Coro::Handle->peeraddr/host/port, for slightly
218 improved compatibility with LWP.
219 - implement 5.17 compatibility by almost blindly applying a
220 good-looking patch by Father Chrysostomos.
221 - move stack management functions into libcoro 3.
222 - libcoro version 3 "released".
223 - support magic values as timed_io_once args.
224 - recommend AnyEvent 7+ or EV 4+, also require EV
225 version 4 or newer for Coro::EV.
226
2276.10 Tue Oct 9 01:14:27 CEST 2012
228 - updated ecb.h, it had a typo that caused it to not compile on many
229 big endian systems (reported by many people).
230 - disable memory fences in ecb.h to improve portability.
231
2326.09 Sat Oct 6 23:25:02 CEST 2012
233 - Coro::EV I/O watchers were not interruptible by exceptions
234 (Coro::State::throw) (testcase by sten).
235 - ->throw now puts threads into the ready queue, as this seems to
236 be expected by existing code, and code that doesn't cope with spurious
237 wakeups needs fixing anyway.
238 - use fd -1 in mmap.
239 - cast I32 to int in error message printf.
240 - warn about broken so-called "hardened" kernels.
241
2426.08 Fri Apr 13 12:05:47 CEST 2012
243 - be more aggressive about exiting like perl does - formerly,
244 exiting from the non-main thread would not execute END blocks.
245
2466.07 Fri Nov 11 21:21:48 CET 2011
247 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
248 - update ecb.h.
249
2506.06 Mon Aug 8 23:59:48 CEST 2011
251 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
252 backend, which is an order of magnitude slower. unfortunately, cygwins
253 pthread implementation isn't very complete either, so allocate the stack
254 twice just to be sure.
255 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
256 in its ithreaded perl - best recompile cygwin and use the 'w'indows
257 backend for much better performance. also disable ithreads for
258 even better performance...).
259
2606.05 Thu Aug 4 21:36:36 CEST 2011
261 - blush, condvar values would not be propagated from send to recv anymore
262 (reported by Chip Salzenberg).
263 - use exponential increase for the readline buffer length in
264 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
265
2666.04 Wed Aug 3 17:15:45 CEST 2011
267 - use even more efficient and more compatible condvars for
268 compatibility to AnyEvent 6.x :)
269 - more inconsequential ecb.h updates.
270
2716.03 Wed Aug 3 11:41:30 CEST 2011
272 - change how Coro patches AnyEvent condvars for compatibility to
273 AnyEvent 6.x.
274 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
275 hasn't been included.
276
2776.02 Wed Jul 13 04:35:19 CEST 2011
278 - "improve portability to Gentoo" - gentoo manages to put perl variables
279 in memory areas that are farther than 2gb apart, which the jit couldn't
280 handle and barfed. now it's just a bit slower on gentoo and similar
281 systems.
282
2836.01 Sun Jul 3 12:31:14 CEST 2011
284 - workarounds are good, but the test for whether pthreads are used
285 was not good. this one should be better.
286 - check differently whether gcc generates cfi instructions itself.
287
2886.0 Wed Jun 29 19:43:35 CEST 2011
289 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
290 destroyed and cleaned up automatically (e.g. async { schedule }).
291 - implement a JIT compiler for part of the thread switch code,
292 which gives a 50% speed improvement on threaded perls, and
293 about 4% on non-threaded perls (so threaded perls now finally
294 reach about half the speed of non-threaded perls).
295 - slightly modernise Coro::Intro, add section about rouse functions.
296 - avoid DEFSV and ERRSV, giving another 10% improvement
297 in thread switching.
298 - Coro::State->is_destroyed is now called is_zombie.
299 - implement a Coro->safe_cancel method that might fail, but
300 cancels in a "safer" way if it succeeds.
301 - add preliminary support for DEBUGGING perls.
302 - get rid of two hash-accesses when initialising a new Coro - this
303 speeds up coro creation by almost a factor of two.
304 - croak when a coro that is being cancelled tries to block
305 (e.g. while executing a guard block), instead of crashing or
306 deadlocking.
307 - use a more robust and also faster method to identify Coro::State
308 objects - speeds up everything a bit.
309 - implement Coro->cancel in XS for a 20% speed improvement, and to
310 be able to implement mutual cancellation.
311 - speed up context switches by a percent or two by more efficiently
312 allocating context stack entries.
313 - implement Coro->join and Coro->on_destroy in XS for a speedup and
314 a reduction in memory use.
315 - cancelling a coro while it itself is cancelling another coro is
316 now supported and working, instead of triggering an assertion.
317 - be a bit more crash-resistant when calling (buggy) on_destroy
318 callbacks (best effort).
319 - move on_destroy into the slf_frame, to allow extension slf
320 functions to have destructors.
321 - get rid if coro refcounting - simply crash in other interpreter
322 threads by nulling the pointers on clone.
323 - simplify warn/die hook handling when loading Coro - the convoluted
324 logic seems to be no longer neccessary.
325 - use libecb instead of our own home-grown gcc hacks.
326 - document alternatives to Coro::LWP. Please use them :)
327 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
328 sigaltstack. Really. wine suffers from it, erlang suffers from it,
329 and it's known since at least 2006.
330
3315.372 Wed Feb 23 06:14:30 CET 2011
332 - apparently mingw doesn't provide a working gettimeofday, try to
333 work around that by relying on Time::HiRes (indirectly brought to
334 my attention by Max Maischein).
335 - fix some portability issues when Time::HiRes was used.
336
3375.371 Mon Feb 21 14:36:08 CET 2011
338 - backport to windows process emulation code again.
339
3405.37 Sat Feb 19 07:49:44 CET 2011
341 - add a big "Coro thread life cycle" section to "man Coro".
342 - try a tentative workaround against the breakage that 5.13 has
343 introduced without depreciation period. sigh.
344 - no longer use Time::HiRes if gettimeofday is available, which
345 saves quite a lot of memory.
346
3475.36 Sun Feb 13 05:33:41 CET 2011
348 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
349 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
350 method call.
351 - undocument Coro::Timer::sleep and obsolete whole module.
352 - optimise Coro::Timer::timeout memory and cpu usage.
353 - slightly updated Coro::Intro for recent changes.
354 - do not initialise PL_dirty anymore.
355
3565.25 Thu Nov 11 01:08:39 CET 2010
357 - try a different approach on netbsd - netbsd 5 finally has marginally
358 working pthreads, but still broken ucontext/sigaltstack.
359 - openbsd 4.8 finally got their act together, Coro works out of the box
360 with asm, setjmp and pthreads (no change, just informational).
361
3625.24 Sat Oct 23 11:27:12 CEST 2010
363 - port to the EV 4.0 API.
364 - work around bugs in mingw32, making strawberry perl work
365 out of the box.
366 - correctly modify Coro::AIO function prototypes
367 so that they reflect the "no optional parameters" rule.
368 - "ported" libcoro to C++.
369
3705.23 Mon May 17 18:50:42 CEST 2010
371 - be more resistant to ordering changes when initialising
372 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
373 Waldorf).
374 - document that perl 5.12 deliberately removed support for cloning.
375
3765.22 Wed Apr 14 03:55:35 CEST 2010
377 - correctly return udnef on errors in Coro::Handle::read/write
378 (testcase by Marc Mims).
379 - convert Coro::Util into a "perl compatibility wrapper" - the functions
380 are less useful now, but are drop-in replacements for existing
381 functions, listing better alternatives in the documentation. This also
382 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
383 with Coro::Util::inet_aton.
384 - do not override $Coro::idle unconditionally in Coro.pm, as other
385 modules could have provided their own idle coro already
386 (for exmaple, Coro::AnyEvent).
387 - fix Coro::Util::gethost* functions.
388 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
389
3905.21 Wed Dec 16 07:19:51 CET 2009
391 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
392 together.
393 - add some examples on how to combine other event loops with Coro in
394 Coro::AnyEvent, and how to run it (and not to block). Seems to be
395 the most common source of confusion.
396 - try to catch people naively blocking in an event callback.
397 - work around the perl filehandle bug issue in conjunction with
398 older common::sense (as indirectly pointed out by ZSystem).
399 - clarify the "not from signal handlers" section.
400
4015.2 Sun Oct 4 14:54:24 CEST 2009
402 - Coro::Storable destroyed the prototypes of the functions it wrapped.
403 - export rouse_cb and rouse_wait by default now.
404 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
405 - new method $state->swap_sv.
406 - added section on "windows process emulation" to the manpage,
407 after a not-so-fruitful (nor-friendly) "discussion" with chip
408 salzenberg (discussion implies arguments, but his only arguments
409 were ad-hominems, one wonders why he started it in the first
410 place). I hope this explains it well enough for him to understand,
411 and maybe well enough for others to understand.
412 - use common::sense everywhere now.
413 - idle callbacks are no longer supported, use idle coros instead.
414 - print a thread listing when a deadlock is detected.
415
4165.17 Sat Aug 22 23:09:31 CEST 2009
417 - work around a bug in the perl debugger causing crashes
418 when running under the debugger by marking _pool_handler as nodebug.
419 - speed up Coro::async considerably.
420 - try some hacks to get netbsd to work "more often" - their broken
421 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
422 - convert Coro to AE 5.0 API.
423
4245.162 Tue Jul 28 04:04:03 CEST 2009
425 - perl 5.8.2 is now minimum requirement.
426 - skip t/19_handle.t on broken windows perls.
427
4285.161 Wed Jul 22 04:47:38 CEST 2009
429 - Coro::AnyEvent::poll could have a different prototype when EV was
430 used as backend (analyzed by Tatsuhiko Miyagawa).
431 - Coro::AnyEvent errornously initialised the event loop when loaded,
432 not on demand.
433 - try to workaround rare */t/01_unblock.t failures.
434
4355.16 Tue Jul 21 01:44:37 CEST 2009
436 - Coro::AnyEvent failed to hook into the event loop
437 when no threads had been readied between detecting
438 the event loop and actually running it.
439 - considerably speed up Coro::Select by taking avdantage
440 of AnyEvent > 4.8 and some other optimisations.
441 - implement paragraph readline mode in Coro::Handle
442 (based on patches by Zsbán Ambrus).
443 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
444 and analyzed by Yasuhiro MATSUMOTO).
445 - clarified libcoro license and copyright.
446 - someone stole my EXTRA_META!!!
447 - implement Coro::Select::patch_pp_sselect and it's brother,
448 for hardcode select overriding.
449
4505.151 Mon Jul 6 05:41:57 CEST 2009
451 - backport to windows process emulation code again (patch by
452 Yasuhiro MATSUMOTO).
453 - slightly update Coro::MakeMaker.
454
4555.15 Tue Jun 30 10:28:06 CEST 2009
456 - deprecate Coro::Socket, document how to get ipv6 support via
457 AnyEvent::Socket instead.
458 - implement signal->wait ($cb) interface, similar to semaphores.
459 - work around SvOK not supporting getmagic, so we have to getmagic
460 to test for undef :/ (reported by Matthias Waldorf).
461 - load Coro::AnyEvent in all modules using AnyEvent.
462 - work around perl corrupting our internal data structures,
463 reported by Tokuhiro Matsuno.
464 - enable per-coroutine real and cpu time gathering
465 (Coro::State::enable_times).
466
4675.14 Wed Jun 24 01:37:48 CEST 2009
468 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
469 as this seems to have been a difficult concept (poll, sleep, idle,
470 idle_upto).
471 - add Coro::AnyEvent::readable/writable functions.
472 - clarify Coro::EV/Event/AnyEvent manpages.
473 - free per-thread global scalars in the thread calling ->cancel, to
474 avoid crashes when $_, $@ etc., are magical but some of those
475 had already been freed.
476 - "unexperimentalise" the callback interface for Coro::Semaphore.
477 - speed up ready queue management/context switching by using a linked
478 list instead of an array (~5-10%).
479 - implement "watch" command in Coro::Debug shells.
480 - for fun, implement time-slicing as an example in the manpage.
481 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
482 Coro::Event, use the normal AnyEvent handling instead of dieing
483 (the same is true for Coro::Handle).
484 - properly document Coro::EV::timed_io_once.
485 - avoid unneccessary ->cancel calls in Coro::Handle.
486 - maybe make it work on mingw32 with win32 backend
487 (based on patch by Yasuhiro Matsumoto).
488
4895.132 Fri May 29 09:00:39 CEST 2009
490 - do not keep a reference to the argument itself in
491 Coro::Semaphore::guard, as it could change later.
492 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
493 should support a prepare callback.
494
4955.131 Mon Mar 16 23:20:37 CET 2009
496 - implement and document Coro->suspend, Coro->resume.
497 - fix Coro::Select implementation to not (often) close
498 the passed file descriptors (testcase provided by pippijn).
499
5005.13 Mon Dec 15 21:51:42 CET 2008
501 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
502 - don't set diehook to C<undef> but instead to NULL, to avoid
503 spurious warnings.
504 - fix a lot of bugs in Coro::SemaphoreSet.
505 - Coro::SemaphoreSet will less often create a semaphore needlessly.
506 - add Coro::SemaphoreSet::count and wait methods.
507 - take advantage of the new Guard module.
508 - deprecate Coro::guard.
509 - try to fix the dreaded 01_unblock tests once more. I hate it when
510 testsuites need more fixing than the code they are supposed to test.
511 - croak in more cases when a required callback isn't resolvable.
512 - fix some minor issues in Coro::State->call/eval.
513 - use current coroutine context instead of a temporary one
514 when temporarily switching to another coroutine.
515 - do not call C-level on_destroy handlers during global destruction,
516 to avoid needless segfaults.
517
5185.12 Sun Dec 7 13:30:38 CET 2008
519 - add default config for MirOS, which seems to be a bug-to-bug
520 compatible fork of openbsd ("world domination by releasing
521 openbsd cvs before the openbsd folks do it" or so :).
522 - free_padlist did destroy the names pad, not good, but didn't
523 seem to bother perl - this could fix issues such as eval ""
524 inside a function called from multiple coroutines.
525 - use a different method to detect destruction time.
526 - be more careful when freeing padlists just before global
527 destruction.
528 - fixed and expanded the call/cc example.
529 - renamed _terminate to _coro_run.
530 - new method Coro::Channel->shutdown.
531 - try pthreads on openbsd <4.4 (broken sigaltstack, will
532 pthreads fare better?).
533 - be less picky about destroying "a" running coroutine.
534
5355.11 Tue Nov 25 21:49:05 CET 2008
536 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
537 working code with failed assertions, introducing more bugs than
538 it fixes, requiring elaborate workarounds :(
539
5405.1 Mon Nov 24 08:54:59 CET 2008
541 - wrote a small introductory tutorial - Coro::Intro.
542 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
543 - Coro::Select did errornously dup the file descriptors
544 and didn't work with all AnyEvent backends.
545 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
546 LWP data transfers.
547 - disassociate c contexts from coro objects - this is agruably more
548 correct, but mostly allows sharing of cctxs between coro and state
549 objects, for added memory savings and speed increases.
550 - bumped $Coro::POOL_RSS up to 32kb by default.
551 - no longer set the optype to OP_CUSTOM, as B::* understandably
552 doesn't like this very much (and we *are* a type of entersub).
553 - implement state cloning, just to prove that call/cc can be done.
554 - automatically load Coro::AnyEvent in Coro::Handle.
555 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
556 do not have this method (and don't need it either).
557 - speed up generic anyevent methods in Coro::Handle by using rouse
558 callbacks.
559 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
560 others. It also makes the debugger happier, as you can trace
561 through the idle threads now.
562 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
563 - eg/event was pretty broken.
564 - better 5.8.6 compatibility.
565
5665.0 Thu Nov 20 10:35:05 CET 2008
567 - NEW ARCHITECTURE: use the latest 4.x version if you experience
568 stability issues.
569 - bump API version to 7 - all dependents must be recompiled.
570 - removed timed_* functions - they were not being used anyways
571 and should be replaced by a more generic mechanism -
572 and were annoying to support anyways :)
573 - removed SemaphoreSet's waiter method - use sem method instead.
574 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
575 - async_pool did free a scalar value twice
576 ("Attempt to unreference...").
577 - fix a longstanding bug where calling terminate on a coro that
578 was waiting for a semaphore that was just becoming available
579 would cause a deadlock (semaphore would get into a state where
580 it was available but waiters were still blocked).
581 - calling throw on a coroutine that is waiting for a semaphore will
582 no longer make it acquire the semaphore (and thus leak a count).
583 - perl's process emulation is now not even theoretically supported
584 anymore.
585 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
586 conversion of callback-style to blocking-style.
587 - new methods $coro->schedule_to and ->cede_to, to specifically
588 schedule or cede to a specific coroutine.
589 - new function Coro::Semaphore::wait.
590 - use named constants in Coro::Channel (Richard Hundt).
591 - directly patch the entersub opcode calling SLF functions (cede,
592 transfer and so on). this does speed up context switching, but
593 more importanly, it frees us from the hardcoded behaviour of
594 entersub, so we might actually be able to return something from
595 those functions and atcually create new ones.
596 - take advantage of __builtin_frame_address on gcc.
597 - expose THX in coroapi (not sure whether this was a wise decision,
598 as "threaded" perls are running at half speed anyways).
599 - implement execute_slf (schedule-like-function) interface that makes
600 it possible to implement schedule-like-functions in XS.
601 - use new SLF interface to massively speed up Coro::EV by roughly a
602 factor of two.
603 - used new SLF interface to massively speed up Coro::Semaphore by a
604 factor of three.
605 - used new SLF interface to speed up Coro::AIO by roughly a factor of
606 four and reduce its memory usage considerably.
607 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
608 for a nice speedup and vastly more correct behaviour. Also implement
609 a new method "sem" to get at the underlying semaphore object.
610 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
611 (in comparison) 20-40% speedup.
612 - used new SLF interface to reimplement Coro::Signal gaining
613 some unknown (because I was too lazy), but certain, speedup, and also
614 making signals reliable for the first time.
615 - used new SLF interface and other optimisations to speed up async_pool
616 by a factor of two. It also doesn't rely on perl's exception mechanism
617 to exit anymore. The overhead for terminating an async_pool, coro over
618 a normal async is now very small.
619 - sped up coroutine creation/destruction by 40%.
620 - forgot to include Coro/libcoro/README in the dist for all these years.
621 - work around a freebsd pthreads bug (manual testcancel is required as
622 pthread_cond_wait isn't a cancellation point on freebsd).
623 - use new rouse functions to speed up and simplify Coro::BDB.
624 - make "prefer perl native functions" work with threaded perls.
625 - condense Coro::Debug ps output, hint at v and w flags.
626 - (libcoro) lots of minor cleanups and portability improvements.
627
6284.914 Wed Nov 19 12:54:18 CET 2008
629 - fix a disastrous bug in the readline optimisation
630 introduced in 4.801.
631
6324.913 Sat Nov 15 07:58:28 CET 2008
633 - async_pool did free a scalar value twice
634 ("Attempt to unreference...").
635
6364.912 Thu Nov 13 18:31:23 CET 2008
637 - minor cleanups.
638 - use much larger stacks on linux and perl < 5.8.8.
639 - Coro::Debug::new_unix_server did not unlink the socket
640 when destroyed.
641
6424.911 Tue Nov 11 04:26:17 CET 2008
643 - "port" to threaded perls.
644
6454.91 Mon Nov 10 05:36:38 CET 2008
646 - the ->throw exception object no longer leaks.
647 - creating a new cctx leaked a scopestack entry (memleak).
648 - new coroutines didn't get created with a zero flags field
649 (unknown impact).
650 - calling ->throw on a not-yet-started coroutine should now work
651 instead of being ignored.
652 - ->throw is now supported on Coro::State objects.
653 - clean up cctx creation code a bit.
654 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
655
6564.9 Sat Nov 8 17:45:27 CET 2008
657 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
658 - (libcoro) no longer leak threads in the experimental pthread backend,
659 also speed it up considerably.
660 - (libcoro) do not rely on makecontext passing void *'s unscathed.
661 - fix compiletime dependencies on libcoro in the Makefile.
662 - cctx_count wasn't always updated properly.
663 - Coro::State::cctx_stacksize wasn't applied correctly.
664 - new function Coro::State::cctx_max_idle.
665 - the default max number of idle C contexts is now 4.
666 - (libcoro) try harder to get _setjmp/_longjmp.
667 - (libcoro) cleanup and extend the libcoro API to officially
668 allow the creation of empty source contexts.
669 - very experimental workaround for the totally broken netbsd platform.
670 - tried to hack around openbsd bugs.
671
6724.804 Wed Nov 5 16:36:00 CET 2008
673 - Coro::Debug::new_unix_server would not create a non-blocking listening
674 socket, sometimes causing freezes.
675 - (libcoro) fix misaligned stack points for setjmp and assembly
676 methods, which can cause crashes on x86/x86_64 with a sufficiently
677 aggressive compiler.
678 - new function: Coro::Debug::new_tcp_server.
679 - move ->throw into the Coro class because it only works on coro objects.
680
6814.803 Mon Nov 3 17:16:12 CET 2008
682 - (libcoro) use a global asm statement to become independent of gcc
683 otpimisations for CORO_ASM (thanks to pippijn for the idea).
684 - try to workaround yet another broken bsd, this time dragonfly.
685
6864.802 Thu Oct 30 10:56:12 CET 2008
687 - support -fno-omit-frame-pointer on x86 with the assembly method.
688 - tune 01_unblock.t tests a bit.
689
6904.801 Wed Oct 22 18:33:37 CEST 2008
691 - improve readline speed for very long "lines".
692 - backport to 5.8.8.
693
6944.8 Thu Oct 2 13:34:40 CEST 2008
695 - new function Coro::AIO::aio_wait.
696 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
697 - greatly speed up and reduce memory usage of Coro::AIO requests.
698 - implement some other µ-optimisations.
699
7004.749 Mon Sep 29 14:40:12 CEST 2008
701 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
702
7034.748 Sat Sep 27 14:03:19 CEST 2008
704 - implement, but do not document, PerlIO::cede(granularity).
705 - Coro::Storable forgot to wrap Storable::pstore.
706 - work around the multitude of leaks and memory corruption
707 bugs in PerlIO::via by using our own C-level perliol. As a side
708 effect, Coro::Storable is now much, much, much faster.
709
7104.747 Tue Sep 23 01:59:41 CEST 2008
711 - fix a per-cv memleak (one empty array was leaked per
712 code reference).
713 - avoid a crash in coro->call|rss when the coroutine was already
714 destroyed (most noticably when using Coro::Debug::ps :)
715 - also protect *Storable::FILE.
716 - push up default storable granularity to 20ms.
717
7184.746 Sun Sep 21 03:22:20 CEST 2008
719 - be more insistent on locking Storable against reentrancy
720 in Coro::Storable.
721 - move swap_def?v and throw to Coro::State, as documented.
722
7234.745 Thu Jul 24 00:14:38 CEST 2008
724 - remove debugging code related to MgPV_nolen_const, also try to
725 make it compile with perl 5.8.6 (yes, apple apparently loves
726 outdated software). Reported by John S.
727
7284.744 Tue Jul 8 22:06:35 CEST 2008
729 - correctly provide default DIE/WARN handlers as documented.
730 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
731 implementations inside perl work fine for us.
732
7334.743 Mon Jun 16 00:21:57 CEST 2008
734 - when using Coro::EV without running EV::loop it could
735 result in busy-waiting for events, this has been fixed.
736 - reduce codesize and improve performance by using EV_DEFAULT_UC.
737
7384.742 Sat May 31 14:10:21 CEST 2008
739 - implement a workaround for (some) perl <5.8.8 versions.
740 - require EV 3.3+.
741
7424.741 Fri May 30 23:33:09 CEST 2008
743 - tell netbsd how utterly broken their imitation of an OS is
744 and refuse to build by default if pthreads are in use.
745 - switch to "s" method on all bsd's by default, as their ucontext
746 stuff seems just too broken.
747 - fix a bug in Coro::Select.
748
7494.74 Thu May 29 20:05:31 CEST 2008
750 - do not test Coro::LWP for lack of dependencies.
751 - do not test Coro::Select for lack of working perls.
752
7534.73 Thu May 29 2008
754 - fix a bug in Coro::EV which would cause it to block despite
755 there being runnable coroutines.
756 - sprinkle "no warnings" freely over everything, also suppress
757 warnings for some other modules.
758 - fix typo in WSAEWOULDBLOCK.
759
7604.72 Sun May 25 05:14:36 CEST 2008
761 - tweak META.yaml a bit, unfortunately, there is no documented way
762 to have optional dependencies with CPAN. doh :(
763 - avoid running some tests on windows because they would fail due to
764 perl bug (broken fork, broken pipes...).
765 - work around perl on windows bugs where perl returns undocumented
766 error codes for sysread, syswrite etc. by taking advantage
767 of AnyEvent's workaround for that problem.
768 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
769 a common perl implementation bug on windows.
770 - use unix domain sockets in testsuite to work around
771 common perl implementation bugs on widows (they are emulated by
772 tcp sockets on windows. ugh.)
773
7744.71 Sat May 24 20:01:27 CEST 2008
775 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
776 - take advantage of async name resolution of AnyEvent::Util.
777 - work around brutal inet_aton override in Coro::LWP.
778 - take advantage of the readyhook in Coro::EV, for smoother
779 scheduling.
780
7814.7 Sun May 11 00:32:19 CEST 2008
782 - completely reworked the Coro manpage.
783 - added Coro::AnyEvent, generic event loop integration.
784 - implement cancel, ready and kill commands in Coro::Debug.
785 - document find_coro in Coro::Debug.
786 - incompatible change: rename has_stack to has_cctx.
787 - Coro::AIO and Coro::BDB no longer force event model detection,
788 use AnyEvent::AIO and AnyEvent::BDB.
789
7904.6 Sat Apr 26 10:05:14 CEST 2008
791 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
792 by the Coro module. It was a mistake to have it in the first place.
793 - (experimental) support for activestate perl 5.10 (method "w").
794 - (experimental) support for strawberry perl (method "a").
795 - coro_sigelem_set did not return a value although it had to,
796 actual impact unknown.
797
7984.51 Mon Apr 14 13:28:27 CEST 2008
799 - make it compile again on 5.8.
800
8014.50 Thu Apr 10 09:43:17 CEST 2008
802 - I did it twice! (see 4.49).
803
8044.49 Sun Apr 6 21:23:31 CEST 2008
805 - grr, instead of compiling the recent changes on 5.10 only they
806 were compiled on 5.8 only.
807
8084.48 Sun Apr 6 20:36:46 CEST 2008
809 - allow coroutine switches during eval's under 5.10.x, as it seems
810 the parser is a per-interpreter option now, so this is safe
811 (this might fix the odd crashing bug).
812 - drop support for 5.9.x versions: they are dead, jim.
813
8144.47 Sun Apr 6 00:37:52 CEST 2008
815 - force cctx allocation on API calls: we know we need to force one
816 and gcc actually manages to confuse our heuristic nowadays,
817 leading to crashes and worse.
818 - document force_cctx.
819
8204.46 Fri Apr 4 22:05:43 CEST 2008
821 - upgrade libcoro, resulting in pthread-backend (which was only created
822 to fulfill the rules of the programming languages shootout).
823
8244.45 Thu Mar 13 11:55:36 CET 2008
825 - fix a file leaking bug in eg/mhyttpd that would allow
826 downloading of any file (reported by oesi).
827 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
828 (also add testcase).
829 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
830 apparently having loads of fun with that).
831 - implement $state->swap_defsv, ->swap_defav and document ->throw.
832
8334.4 Wed Feb 13 16:44:29 CET 2008
834 - only assume .cfi pseudo isns exist on GNU/Linux.
835 - add get_timed method to Coro::Channels.
836 - fixed Coro::Debug manpage.
837 - perl 5.11 compatbility improvement based on patch by
838 Andreas König.
839
8404.37 Sun Jan 20 11:25:23 CET 2008
841 - soften the check for an active parser for perl 5.10 (avoiding
842 "Coro::State::transfer called while parsing" in many cases).
843
8444.36 Sun Jan 13 10:53:56 CET 2008
845 - reset diehook when terminating from an async_pool as to not
846 trigger any __DIE__ handlers.
847
8484.35 Sun Jan 13 04:14:13 CET 2008
849 - "bt" debug command now displays any exceptions
850 from longmess and also skips the innermost
851 stackframes, giving more useufl output.
852 - allow backtraces in coroutines blocked in Coro::EV,
853 at a <1% speed hit.
854 - handle localising of $SIG{__WARN__} and __DIE__
855 properly (with a proper amount of dirty hacking).
856
8574.34 Sat Dec 22 17:49:53 CET 2007
858 - upgrade to EV version 2.0 API.
859
8604.33 Mon Dec 17 08:36:12 CET 2007
861 - make Coro::AIO etc. loadable in the absence of EV.
862
8634.32 Mon Dec 17 07:46:02 CET 2007
864 - majorly improved Coro::Handle's performance with Coro::EV.
865 - implemented the until now mythical Coro::BDB module.
866 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
867
8684.31 Wed Dec 5 12:32:39 CET 2007
869 - remove warn statement form Coro::Util.
870
8714.3 Tue Dec 4 20:33:14 CET 2007
872 - calls to the idle function could cause stack corruption
873 when the stack changed.
874 - do no longer rely on the presence of EV::DNS if EV is used
875 (because it is gone), but instead take avdantage of EV::ADNS
876 if available.
877 - add ($) prototypes to all functions in Coro::Storable.
878 - use a conventional (safer) idle callback in Coro::EV.
879 - do accept quickly in Coro::Debug to avoid endless loops.
880
8814.22 Fri Nov 30 16:04:04 CET 2007
882 - really use optimised versions for Event and EV in Coro::Util
883 and Coro::Handle.
884
8854.21 Sun Nov 25 10:48:59 CET 2007
886 - fix a spurious memory read.
887 - Coro::EV no longer keeps the eventloop "alive".
888
8894.2 Fri Nov 9 20:47:05 CET 2007
890 - enable/disable tracing from a new coroutine, not a pooled one.
891 - fix a memleak in Coro::Event.
892 - removed killall call from fork_eval.
893 - made sure store_fd is already loaded so that fork_eval
894 does not have to parse autoload in each subprocess.
895 - only use assembly method if -O switch is in $Config{optimize}.
896 - add (optional) Coro::EV module, so far the best event loop module
897 directly supported by Coro.
898 - if the event model is EV, use EV::DNS to resolve
899 stuff in Coro::Util.
900 - don't get confused by multiple event notifications in Coro::Handle.
901 - initial support for EV (libevent interface).
902 - require Event and EV using configure_requires, to force their existance.
903
9044.13 Wed Oct 24 07:26:45 CEST 2007
905 - add Coro::Storable::blocking_thaw.
906 - use a vastly more complicated technique to localise
907 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
908 - use a coroutine for the idle callback Coro::Event,
909 instead of running Event in the current coroutine context.
910 This also catches recursive invocations.
911 - actually report fork errors in gethostbyname and inet_aton.
912
9134.11 Thu Oct 11 02:40:24 CEST 2007
914 - port to threaded perls.
915
9164.1 Thu Oct 11 02:38:16 CEST 2007
917 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
918 be local to each coro (see Coro::State).
919 - incompatible change: for very deep reasons, cede and cede_notself
920 cannot return anything, so nothing will be returned.
921 - possibly bring back 5.10 compatibility (untested).
922 - work around stupid (and wrong) warning on 5.10 :(.
923 - overlay the saved state over the context stack. This saves
924 a few hundred bytes per coroutine on average and also
925 speeds up context switching a bit.
926 - further tune default stack sizes.
927 - (more) correctly calculate stack usage in coro_rss.
928 - Coro::Storable::blocking_* did not properly lock
929 resulting in races between coroutines.
930 - added Coro::Storable::guard.
931 - stopping to trace a coroutine could destroy the cctx of
932 an unrelated coroutine.
933 - explain the relationship between Perl and C coroutines in
934 more detail in Coro::State.
935 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
936 causing a fork per resolve. This also affected Coro::Socket.
937 - switch to a separate stack in $coro->call/eval to avoid
938 invalidating pointers.
939
9404.03 Sat Oct 6 21:24:00 CEST 2007
941 - added Coro::throw method.
942 - minor code cleanups.
943
9444.02 Sat Oct 6 02:36:47 CEST 2007
945 - fix a very minor per-coroutine memleak (a single codereference).
946 - fixed a bug where the currently in-use c context would be freed
947 prematurely (can happen only when programs change the stacksize
948 or use tracing).
949 - tracing can no longer keep a coro alive after it terminated.
950 - do static branch prediction in the common path for gcc. gives
951 about 2-5% speed improvement here.
952
9534.01 Fri Oct 5 22:10:49 CEST 2007
954 - instead of recreating *a* standard output handle we simply
955 use STDOUT, which is faster and hopefully more robust.
956
9574.0 Fri Oct 5 12:56:00 CEST 2007
9 - incompatibly changed Coro::Storable::freeze. 958 - incompatibly changed Coro::Storable::freeze.
10 - major new feature: added Coro::Debug, for interactive coroutine 959 - major new feature: added Coro::Debug, for interactive coroutine
11 debugging, tracing and much more. 960 debugging, tracing and much more.
12 - major bug fix: unbelievable, but true: $_, $/ and many other 961 - major bug fix: unbelievable, but true: $_, $/ and many other
13 "saved" variables actually weren't being saved. This has been fixed, 962 "saved" variables actually weren't being saved. This has been fixed,
… …
45 but stateful semantics. 994 but stateful semantics.
46 - fixed a lot of typos in Coro.pm (patch submitted by David 995 - fixed a lot of typos in Coro.pm (patch submitted by David
47 Steinbrunner, which applied flawlessly). 996 Steinbrunner, which applied flawlessly).
48 997
493.6 Sat Apr 14 17:13:31 CEST 2007 9983.6 Sat Apr 14 17:13:31 CEST 2007
50 - added some bugfixes to get eg/myhttpd working again. 999 - added some bugfixes to get eg/myhttpd working again.
51 - added Coro::Storable for often-cede'ing freeze/thaw. 1000 - added Coro::Storable for often-cede'ing freeze/thaw.
52 - try to do a clean exit when a coroutine calls exit 1001 - try to do a clean exit when a coroutine calls exit
53 (EXPERIMENTAL). 1002 (EXPERIMENTAL).
54 - got rid of indirect call through _coro_init. 1003 - got rid of indirect call through _coro_init.
55 - updated the partly antique examples in eg/ to 1004 - updated the partly antique examples in eg/ to

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