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Comparing Coro/Changes (file contents):
Revision 1.226 by root, Thu Apr 19 10:37:26 2007 UTC vs.
Revision 1.671 by root, Thu Aug 31 16:24:19 2017 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: better (earlier) error messages on broken transfer's 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: destroy gets only called on cancel: fix(?) 4TODO: channel->maxsize(newsize)?
5TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO. 5TODO: __GCC_HAVE_DWARF2_CFI_ASM
6TODO: maybe implement a default message channel, very much like Erlang 6TODO: swap_sv, maybe add scope_swap_sv?
7 (which is cool in a lot of important aspects (failures!), 7TODO: croak when async_pool tries to run canceled thread?
8 but very lacking in others). 8
9 - safe_cancel no longer croaks when called on already-destroyed
10 thread, but instead "just works".
11
126.513 Sat Jul 15 01:18:51 CEST 2017
13 - experimental 5.22 comaptibility changes (PadlistNAMES).
14 - removed attributes example and made sure the other examples
15 still work.
16 - fix some statevar types for newer perls, should be of no consequence.
17
186.512 Fri Jul 14 05:03:17 CEST 2017
19 - seems to pass test suite down till 5.8.9, so make this the
20 minimum requirement in Makefile.PL.
21 - experimental 5.24 compatibility changes (SUB_ARGARRAY).
22 - experimental 5.26 compatibility changes (PL_comppad -> PADOFFSET).
23 - disable FORTIFY_SOURCE to avoid broken (but well-intentioned)
24 fortified longjmp variants in some libcs.
25 - re-try JIT allocation without PROT_EXEC, to hopefully improve
26 portability (still doesn't seem to work around broken selinux
27 mmap everywhere).
28 - speling fixes (Xavier Guimard).
29
306.511 Sun Jun 26 23:44:50 CEST 2016
31 - make it compile with threaded perls again.
32 - simplify and speed up __DIE__ and __WARN__ handling.
33
346.51 Sat Jun 25 20:57:20 CEST 2016
35 - 6.5 release didn't compile on most older perls due to
36 a logic error enabling experimental 5.24 code for all versions.
37 - since various broken or deficient patches float around
38 to work around the vtbl API breakage in perl, let's provide
39 our own workaround, which seems to be much less invasive
40 and more compatible than the approaches seen so far. YMMV.
41 - work around assertion failure in perl_destruct on 5.24
42 (analyzed by Dave Mitchell).
43
446.5 Wed Jun 22 22:23:50 CEST 2016
45 - swap_sv swapping order was not symmetrical, causing
46 wrong swaps when swap_sv was used multiple times on the
47 same sv in the same thread.
48 - swap_sv calls can now be undone by calling it again
49 with the same variables.
50 - swap_sv calls will now be undone in async_pool threads.
51 - split Coro::Semaphore::up/adjust into separate xs functions
52 for better error reporting, at slight codesize increase.
53 - (libcoro) arm assembly support, please test and report.
54 - adjust to PL_savestack changes in perl 5.24 (adapted from
55 the debian patch, which unfortunately gets it wrong).
56
576.49 Sat Oct 17 01:40:12 CEST 2015
58 - throwing an exception to a thread waiting in
59 Coro::Handle using Coro::EV did not stop the watchers,
60 causing the next call to fail (testcase by Martin Pritchard).
61 - bump minimum perl version to 5.10.
62
636.48 Sun Oct 4 19:03:51 CEST 2015
64 - fix memory leak when Coro::Handle uses Coro::EV internally
65 (testcase by Sten Sten).
66 - update code to libev 4 API (internally, Coro still used the
67 version 3 API calls).
68 - remove unused hv_sig.
69
706.47 Sat Jul 11 03:58:20 CEST 2015
71 - swap_svs - NVs can be in the SV head beginning with 5.20.
72
736.46 Tue Jun 30 14:36:30 CEST 2015
74 - restore portability to perls with windows fork emulation
75 (patch by Petr Písař).
76
776.45 Tue Jun 30 01:40:08 CEST 2015
78 - restore portability to perl 5.16 and below.
79
806.44 Tue Jun 30 00:41:54 CEST 2015
81 - avoid segfaulting (or worse) when tracing a canceled thread.
82 - the Event module silently broke it's public hook API, causing
83 failures on perls compiled with -Duselongdouble. Requiring
84 the latest version of Event because I don't know which release
85 changed this (it's not mentioned in the ChangeLog).
86 - allow xs level enterleave hooks via CoroAPI.
87
886.43 Thu Jun 4 15:38:14 CEST 2015
89 - use stability canary.
90 - port to stableperl-5.22.0-1.001.
91 - update libecb.
92
936.42 Wed Feb 11 20:29:52 CET 2015
94 - Coro::SemaphoreSet->try did not actually work (analyzed by
95 SATO Kentaro).
96 - upgrade libecb to be C11 compliant.
97
986.41 Sat Sep 6 22:08:46 CEST 2014
99 - restore portability to perl 5.8.x.
100 - give new Coro's a valid GvHV(PL_hintgv) - this is slow and takes
101 up some memory, but fixes "use feature" and similar modules
102 when used inside a Coro.
103 - allow zero as argument to Coro::Channel to mean the same thing
104 as no argument. this works with older versions as well,
105 but wasn't legal until now.
106 - slightly better c header file detection.
107
1086.39 Mon Jun 2 00:00:08 CEST 2014
109 - work around more incompatible changes in 5.20.
110
1116.38 Sun Jun 1 21:54:23 CEST 2014
112 - check that perl slots actually have enough space to hold
113 interpreter variables.
114 - untested port to perl 5.19 (64 bit tmps indices) (reported
115 by Andreas König).
116 - croak when cancel is called without a thread context.
117
1186.37 Tue Mar 4 13:27:33 CET 2014
119 - *sigh*, removed leftover debugging code from debugging a
120 perl bug, of all things.
121
1226.36 Tue Mar 4 07:11:59 CET 2014
123 - semaphores would not clear the destroy hook when interrupted
124 by ->throw, causing segfaults or worse.
125 - ->throw on a thread waiting for a semaphore did not acquire
126 the semaphore, but also didn't wake up other waiters,
127 possibly causing a deadlock.
128 - "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
129 to report a full stacktrace, which should help find out
130 where the actual call is.
131 - "atomically" destroy data in slf_destroy, because it is
132 the right thing to do, just in case.
133 - disable ecb.h libm dependency, to compile on ancient systems
134 or under adverse conditions.
135
1366.33 Mon Nov 18 11:26:27 CET 2013
137 - do not crash when freeing padlists with holes (in 5.18).
138 - tentative SVt_BIND 5.19 port/fix.
139
1406.32 Tue Nov 5 15:35:35 CET 2013
141 - use a new algorithm to derive padlists for perl 5.18. The old
142 one could lead to 0-pointer accesses inside perl (reported
143 by Darin McBride).
144
1456.31 Thu May 9 07:39:48 CEST 2013
146 - Coro::AIO requests would crash if the thread was ready'd
147 while the request was ongoing.
148
1496.29 Wed May 8 02:55:18 CEST 2013
150 - when an on_destroy handler destructs the coro currently being
151 destructed a perl scalar could be accessed after being freed,
152 likely causing a crash.
153
1546.28 Wed Mar 6 06:58:02 CET 2013
155 - clean remnants of existing __DIE__ and __WARN__ handlers so
156 they lose their magic and will not cause segfaults later
157 (testcase by Andrey Sagulin).
158 - improved Coro::State documentation a bit.
159 - Coro::Debug::command now flushes the output.
160 - add hack detection code for x32 abi, because the braindead slugs
161 who designed that made it look exactly like x86_64 without
162 providing proper compile time symbols to test for it. as a result,
163 this detection cannot work reliably.
164 - valgrind stack registering was broken.
165 - do not rely on Time::HiRes anymore in Coro::Debug.
166
1676.23 Fri Dec 7 23:36:37 CET 2012
168 - use experimental fiber implementation on native windows
169 perls.
170 - use sizeof (void *) as multiplication factor for stack sizes,
171 to accomodate the totally braindamaged microsoft 64 bit "os".
172 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
173 activeperl 5.16 crashes when PerlIO_define_layer is called due
174 to some bug in the perl dll, strawberry perl at least passes
175 the testsuite.
176 - implement Coro::Handle->peeraddr/host/port, for slightly
177 improved compatibility with LWP.
178 - implement 5.17 compatibility by almost blindly applying a
179 good-looking patch by Father Chrysostomos.
180 - move stack management functions into libcoro 3.
181 - libcoro version 3 "released".
182 - support magic values as timed_io_once args.
183 - recommend AnyEvent 7+ or EV 4+, also require EV
184 version 4 or newer for Coro::EV.
185
1866.10 Tue Oct 9 01:14:27 CEST 2012
187 - updated ecb.h, it had a typo that caused it to not compile on many
188 big endian systems (reported by many people).
189 - disable memory fences in ecb.h to improve portability.
190
1916.09 Sat Oct 6 23:25:02 CEST 2012
192 - Coro::EV I/O watchers were not interruptible by exceptions
193 (Coro::State::throw) (testcase by sten).
194 - ->throw now puts threads into the ready queue, as this seems to
195 be expected by existing code, and code that doesn't cope with spurious
196 wakeups needs fixing anyway.
197 - use fd -1 in mmap.
198 - cast I32 to int in error message printf.
199 - warn about broken so-called "hardened" kernels.
200
2016.08 Fri Apr 13 12:05:47 CEST 2012
202 - be more aggressive about exiting like perl does - formerly,
203 exiting from the non-main thread would not execute END blocks.
204
2056.07 Fri Nov 11 21:21:48 CET 2011
206 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
207 - update ecb.h.
208
2096.06 Mon Aug 8 23:59:48 CEST 2011
210 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
211 backend, which is an order of magnitude slower. unfortunately, cygwins
212 pthread implementation isn't very complete either, so allocate the stack
213 twice just to be sure.
214 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
215 in its ithreaded perl - best recompile cygwin and use the 'w'indows
216 backend for much better performance. also disable ithreads for
217 even better performance...).
218
2196.05 Thu Aug 4 21:36:36 CEST 2011
220 - blush, condvar values would not be propagated from send to recv anymore
221 (reported by Chip Salzenberg).
222 - use exponential increase for the readline buffer length in
223 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
224
2256.04 Wed Aug 3 17:15:45 CEST 2011
226 - use even more efficient and more compatible condvars for
227 compatibility to AnyEvent 6.x :)
228 - more inconsequential ecb.h updates.
229
2306.03 Wed Aug 3 11:41:30 CEST 2011
231 - change how Coro patches AnyEvent condvars for compatibility to
232 AnyEvent 6.x.
233 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
234 hasn't been included.
235
2366.02 Wed Jul 13 04:35:19 CEST 2011
237 - "improve portability to Gentoo" - gentoo manages to put perl variables
238 in memory areas that are farther than 2gb apart, which the jit couldn't
239 handle and barfed. now it's just a bit slower on gentoo and similar
240 systems.
241
2426.01 Sun Jul 3 12:31:14 CEST 2011
243 - workarounds are good, but the test for whether pthreads are used
244 was not good. this one should be better.
245 - check differently whether gcc generates cfi instructions itself.
246
2476.0 Wed Jun 29 19:43:35 CEST 2011
248 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
249 destroyed and cleaned up automatically (e.g. async { schedule }).
250 - implement a JIT compiler for part of the thread switch code,
251 which gives a 50% speed improvement on threaded perls, and
252 about 4% on non-threaded perls (so threaded perls now finally
253 reach about half the speed of non-threaded perls).
254 - slightly modernise Coro::Intro, add section about rouse functions.
255 - avoid DEFSV and ERRSV, giving another 10% improvement
256 in thread switching.
257 - Coro::State->is_destroyed is now called is_zombie.
258 - implement a Coro->safe_cancel method that might fail, but
259 cancels in a "safer" way if it succeeds.
260 - add preliminary support for DEBUGGING perls.
261 - get rid of two hash-accesses when initialising a new Coro - this
262 speeds up coro creation by almost a factor of two.
263 - croak when a coro that is being cancelled tries to block
264 (e.g. while executing a guard block), instead of crashing or
265 deadlocking.
266 - use a more robust and also faster method to identify Coro::State
267 objects - speeds up everything a bit.
268 - implement Coro->cancel in XS for a 20% speed improvement, and to
269 be able to implement mutual cancellation.
270 - speed up context switches by a percent or two by more efficiently
271 allocating context stack entries.
272 - implement Coro->join and Coro->on_destroy in XS for a speedup and
273 a reduction in memory use.
274 - cancelling a coro while it itself is cancelling another coro is
275 now supported and working, instead of triggering an assertion.
276 - be a bit more crash-resistant when calling (buggy) on_destroy
277 callbacks (best effort).
278 - move on_destroy into the slf_frame, to allow extension slf
279 functions to have destructors.
280 - get rid if coro refcounting - simply crash in other interpreter
281 threads by nulling the pointers on clone.
282 - simplify warn/die hook handling when loading Coro - the convoluted
283 logic seems to be no longer neccessary.
284 - use libecb instead of our own home-grown gcc hacks.
285 - document alternatives to Coro::LWP. Please use them :)
286 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
287 sigaltstack. Really. wine suffers from it, erlang suffers from it,
288 and it's known since at least 2006.
289
2905.372 Wed Feb 23 06:14:30 CET 2011
291 - apparently mingw doesn't provide a working gettimeofday, try to
292 work around that by relying on Time::HiRes (indirectly brought to
293 my attention by Max Maischein).
294 - fix some portability issues when Time::HiRes was used.
295
2965.371 Mon Feb 21 14:36:08 CET 2011
297 - backport to windows process emulation code again.
298
2995.37 Sat Feb 19 07:49:44 CET 2011
300 - add a big "Coro thread life cycle" section to "man Coro".
301 - try a tentative workaround against the breakage that 5.13 has
302 introduced without depreciation period. sigh.
303 - no longer use Time::HiRes if gettimeofday is available, which
304 saves quite a lot of memory.
305
3065.36 Sun Feb 13 05:33:41 CET 2011
307 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
308 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
309 method call.
310 - undocument Coro::Timer::sleep and obsolete whole module.
311 - optimise Coro::Timer::timeout memory and cpu usage.
312 - slightly updated Coro::Intro for recent changes.
313 - do not initialise PL_dirty anymore.
314
3155.25 Thu Nov 11 01:08:39 CET 2010
316 - try a different approach on netbsd - netbsd 5 finally has marginally
317 working pthreads, but still broken ucontext/sigaltstack.
318 - openbsd 4.8 finally got their act together, Coro works out of the box
319 with asm, setjmp and pthreads (no change, just informational).
320
3215.24 Sat Oct 23 11:27:12 CEST 2010
322 - port to the EV 4.0 API.
323 - work around bugs in mingw32, making strawberry perl work
324 out of the box.
325 - correctly modify Coro::AIO function prototypes
326 so that they reflect the "no optional parameters" rule.
327 - "ported" libcoro to C++.
328
3295.23 Mon May 17 18:50:42 CEST 2010
330 - be more resistant to ordering changes when initialising
331 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
332 Waldorf).
333 - document that perl 5.12 deliberately removed support for cloning.
334
3355.22 Wed Apr 14 03:55:35 CEST 2010
336 - correctly return udnef on errors in Coro::Handle::read/write
337 (testcase by Marc Mims).
338 - convert Coro::Util into a "perl compatibility wrapper" - the functions
339 are less useful now, but are drop-in replacements for existing
340 functions, listing better alternatives in the documentation. This also
341 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
342 with Coro::Util::inet_aton.
343 - do not override $Coro::idle unconditionally in Coro.pm, as other
344 modules could have provided their own idle coro already
345 (for exmaple, Coro::AnyEvent).
346 - fix Coro::Util::gethost* functions.
347 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
348
3495.21 Wed Dec 16 07:19:51 CET 2009
350 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
351 together.
352 - add some examples on how to combine other event loops with Coro in
353 Coro::AnyEvent, and how to run it (and not to block). Seems to be
354 the most common source of confusion.
355 - try to catch people naively blocking in an event callback.
356 - work around the perl filehandle bug issue in conjunction with
357 older common::sense (as indirectly pointed out by ZSystem).
358 - clarify the "not from signal handlers" section.
359
3605.2 Sun Oct 4 14:54:24 CEST 2009
361 - Coro::Storable destroyed the prototypes of the functions it wrapped.
362 - export rouse_cb and rouse_wait by default now.
363 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
364 - new method $state->swap_sv.
365 - added section on "windows process emulation" to the manpage,
366 after a not-so-fruitful (nor-friendly) "discussion" with chip
367 salzenberg (discussion implies arguments, but his only arguments
368 were ad-hominems, one wonders why he started it in the first
369 place). I hope this explains it well enough for him to understand,
370 and maybe well enough for others to understand.
371 - use common::sense everywhere now.
372 - idle callbacks are no longer supported, use idle coros instead.
373 - print a thread listing when a deadlock is detected.
374
3755.17 Sat Aug 22 23:09:31 CEST 2009
376 - work around a bug in the perl debugger causing crashes
377 when running under the debugger by marking _pool_handler as nodebug.
378 - speed up Coro::async considerably.
379 - try some hacks to get netbsd to work "more often" - their broken
380 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
381 - convert Coro to AE 5.0 API.
382
3835.162 Tue Jul 28 04:04:03 CEST 2009
384 - perl 5.8.2 is now minimum requirement.
385 - skip t/19_handle.t on broken windows perls.
386
3875.161 Wed Jul 22 04:47:38 CEST 2009
388 - Coro::AnyEvent::poll could have a different prototype when EV was
389 used as backend (analyzed by Tatsuhiko Miyagawa).
390 - Coro::AnyEvent errornously initialised the event loop when loaded,
391 not on demand.
392 - try to workaround rare */t/01_unblock.t failures.
393
3945.16 Tue Jul 21 01:44:37 CEST 2009
395 - Coro::AnyEvent failed to hook into the event loop
396 when no threads had been readied between detecting
397 the event loop and actually running it.
398 - considerably speed up Coro::Select by taking avdantage
399 of AnyEvent > 4.8 and some other optimisations.
400 - implement paragraph readline mode in Coro::Handle
401 (based on patches by Zsbán Ambrus).
402 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
403 and analyzed by Yasuhiro MATSUMOTO).
404 - clarified libcoro license and copyright.
405 - someone stole my EXTRA_META!!!
406 - implement Coro::Select::patch_pp_sselect and it's brother,
407 for hardcode select overriding.
408
4095.151 Mon Jul 6 05:41:57 CEST 2009
410 - backport to windows process emulation code again (patch by
411 Yasuhiro MATSUMOTO).
412 - slightly update Coro::MakeMaker.
413
4145.15 Tue Jun 30 10:28:06 CEST 2009
415 - deprecate Coro::Socket, document how to get ipv6 support via
416 AnyEvent::Socket instead.
417 - implement signal->wait ($cb) interface, similar to semaphores.
418 - work around SvOK not supporting getmagic, so we have to getmagic
419 to test for undef :/ (reported by Matthias Waldorf).
420 - load Coro::AnyEvent in all modules using AnyEvent.
421 - work around perl corrupting our internal data structures,
422 reported by Tokuhiro Matsuno.
423 - enable per-coroutine real and cpu time gathering
424 (Coro::State::enable_times).
425
4265.14 Wed Jun 24 01:37:48 CEST 2009
427 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
428 as this seems to have been a difficult concept (poll, sleep, idle,
429 idle_upto).
430 - add Coro::AnyEvent::readable/writable functions.
431 - clarify Coro::EV/Event/AnyEvent manpages.
432 - free per-thread global scalars in the thread calling ->cancel, to
433 avoid crashes when $_, $@ etc., are magical but some of those
434 had already been freed.
435 - "unexperimentalise" the callback interface for Coro::Semaphore.
436 - speed up ready queue management/context switching by using a linked
437 list instead of an array (~5-10%).
438 - implement "watch" command in Coro::Debug shells.
439 - for fun, implement time-slicing as an example in the manpage.
440 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
441 Coro::Event, use the normal AnyEvent handling instead of dieing
442 (the same is true for Coro::Handle).
443 - properly document Coro::EV::timed_io_once.
444 - avoid unneccessary ->cancel calls in Coro::Handle.
445 - maybe make it work on mingw32 with win32 backend
446 (based on patch by Yasuhiro Matsumoto).
447
4485.132 Fri May 29 09:00:39 CEST 2009
449 - do not keep a reference to the argument itself in
450 Coro::Semaphore::guard, as it could change later.
451 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
452 should support a prepare callback.
453
4545.131 Mon Mar 16 23:20:37 CET 2009
455 - implement and document Coro->suspend, Coro->resume.
456 - fix Coro::Select implementation to not (often) close
457 the passed file descriptors (testcase provided by pippijn).
458
4595.13 Mon Dec 15 21:51:42 CET 2008
460 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
461 - don't set diehook to C<undef> but instead to NULL, to avoid
462 spurious warnings.
463 - fix a lot of bugs in Coro::SemaphoreSet.
464 - Coro::SemaphoreSet will less often create a semaphore needlessly.
465 - add Coro::SemaphoreSet::count and wait methods.
466 - take advantage of the new Guard module.
467 - deprecate Coro::guard.
468 - try to fix the dreaded 01_unblock tests once more. I hate it when
469 testsuites need more fixing than the code they are supposed to test.
470 - croak in more cases when a required callback isn't resolvable.
471 - fix some minor issues in Coro::State->call/eval.
472 - use current coroutine context instead of a temporary one
473 when temporarily switching to another coroutine.
474 - do not call C-level on_destroy handlers during global destruction,
475 to avoid needless segfaults.
476
4775.12 Sun Dec 7 13:30:38 CET 2008
478 - add default config for MirOS, which seems to be a bug-to-bug
479 compatible fork of openbsd ("world domination by releasing
480 openbsd cvs before the openbsd folks do it" or so :).
481 - free_padlist did destroy the names pad, not good, but didn't
482 seem to bother perl - this could fix issues such as eval ""
483 inside a function called from multiple coroutines.
484 - use a different method to detect destruction time.
485 - be more careful when freeing padlists just before global
486 destruction.
487 - fixed and expanded the call/cc example.
488 - renamed _terminate to _coro_run.
489 - new method Coro::Channel->shutdown.
490 - try pthreads on openbsd <4.4 (broken sigaltstack, will
491 pthreads fare better?).
492 - be less picky about destroying "a" running coroutine.
493
4945.11 Tue Nov 25 21:49:05 CET 2008
495 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
496 working code with failed assertions, introducing more bugs than
497 it fixes, requiring elaborate workarounds :(
498
4995.1 Mon Nov 24 08:54:59 CET 2008
500 - wrote a small introductory tutorial - Coro::Intro.
501 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
502 - Coro::Select did errornously dup the file descriptors
503 and didn't work with all AnyEvent backends.
504 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
505 LWP data transfers.
506 - disassociate c contexts from coro objects - this is agruably more
507 correct, but mostly allows sharing of cctxs between coro and state
508 objects, for added memory savings and speed increases.
509 - bumped $Coro::POOL_RSS up to 32kb by default.
510 - no longer set the optype to OP_CUSTOM, as B::* understandably
511 doesn't like this very much (and we *are* a type of entersub).
512 - implement state cloning, just to prove that call/cc can be done.
513 - automatically load Coro::AnyEvent in Coro::Handle.
514 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
515 do not have this method (and don't need it either).
516 - speed up generic anyevent methods in Coro::Handle by using rouse
517 callbacks.
518 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
519 others. It also makes the debugger happier, as you can trace
520 through the idle threads now.
521 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
522 - eg/event was pretty broken.
523 - better 5.8.6 compatibility.
524
5255.0 Thu Nov 20 10:35:05 CET 2008
526 - NEW ARCHITECTURE: use the latest 4.x version if you experience
527 stability issues.
528 - bump API version to 7 - all dependents must be recompiled.
529 - removed timed_* functions - they were not being used anyways
530 and should be replaced by a more generic mechanism -
531 and were annoying to support anyways :)
532 - removed SemaphoreSet's waiter method - use sem method instead.
533 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
534 - async_pool did free a scalar value twice
535 ("Attempt to unreference...").
536 - fix a longstanding bug where calling terminate on a coro that
537 was waiting for a semaphore that was just becoming available
538 would cause a deadlock (semaphore would get into a state where
539 it was available but waiters were still blocked).
540 - calling throw on a coroutine that is waiting for a semaphore will
541 no longer make it acquire the semaphore (and thus leak a count).
542 - perl's process emulation is now not even theoretically supported
543 anymore.
544 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
545 conversion of callback-style to blocking-style.
546 - new methods $coro->schedule_to and ->cede_to, to specifically
547 schedule or cede to a specific coroutine.
548 - new function Coro::Semaphore::wait.
549 - use named constants in Coro::Channel (Richard Hundt).
550 - directly patch the entersub opcode calling SLF functions (cede,
551 transfer and so on). this does speed up context switching, but
552 more importanly, it frees us from the hardcoded behaviour of
553 entersub, so we might actually be able to return something from
554 those functions and atcually create new ones.
555 - take advantage of __builtin_frame_address on gcc.
556 - expose THX in coroapi (not sure whether this was a wise decision,
557 as "threaded" perls are running at half speed anyways).
558 - implement execute_slf (schedule-like-function) interface that makes
559 it possible to implement schedule-like-functions in XS.
560 - use new SLF interface to massively speed up Coro::EV by roughly a
561 factor of two.
562 - used new SLF interface to massively speed up Coro::Semaphore by a
563 factor of three.
564 - used new SLF interface to speed up Coro::AIO by roughly a factor of
565 four and reduce its memory usage considerably.
566 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
567 for a nice speedup and vastly more correct behaviour. Also implement
568 a new method "sem" to get at the underlying semaphore object.
569 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
570 (in comparison) 20-40% speedup.
571 - used new SLF interface to reimplement Coro::Signal gaining
572 some unknown (because I was too lazy), but certain, speedup, and also
573 making signals reliable for the first time.
574 - used new SLF interface and other optimisations to speed up async_pool
575 by a factor of two. It also doesn't rely on perl's exception mechanism
576 to exit anymore. The overhead for terminating an async_pool, coro over
577 a normal async is now very small.
578 - sped up coroutine creation/destruction by 40%.
579 - forgot to include Coro/libcoro/README in the dist for all these years.
580 - work around a freebsd pthreads bug (manual testcancel is required as
581 pthread_cond_wait isn't a cancellation point on freebsd).
582 - use new rouse functions to speed up and simplify Coro::BDB.
583 - make "prefer perl native functions" work with threaded perls.
584 - condense Coro::Debug ps output, hint at v and w flags.
585 - (libcoro) lots of minor cleanups and portability improvements.
586
5874.914 Wed Nov 19 12:54:18 CET 2008
588 - fix a disastrous bug in the readline optimisation
589 introduced in 4.801.
590
5914.913 Sat Nov 15 07:58:28 CET 2008
592 - async_pool did free a scalar value twice
593 ("Attempt to unreference...").
594
5954.912 Thu Nov 13 18:31:23 CET 2008
596 - minor cleanups.
597 - use much larger stacks on linux and perl < 5.8.8.
598 - Coro::Debug::new_unix_server did not unlink the socket
599 when destroyed.
600
6014.911 Tue Nov 11 04:26:17 CET 2008
602 - "port" to threaded perls.
603
6044.91 Mon Nov 10 05:36:38 CET 2008
605 - the ->throw exception object no longer leaks.
606 - creating a new cctx leaked a scopestack entry (memleak).
607 - new coroutines didn't get created with a zero flags field
608 (unknown impact).
609 - calling ->throw on a not-yet-started coroutine should now work
610 instead of being ignored.
611 - ->throw is now supported on Coro::State objects.
612 - clean up cctx creation code a bit.
613 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
614
6154.9 Sat Nov 8 17:45:27 CET 2008
616 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
617 - (libcoro) no longer leak threads in the experimental pthread backend,
618 also speed it up considerably.
619 - (libcoro) do not rely on makecontext passing void *'s unscathed.
620 - fix compiletime dependencies on libcoro in the Makefile.
621 - cctx_count wasn't always updated properly.
622 - Coro::State::cctx_stacksize wasn't applied correctly.
623 - new function Coro::State::cctx_max_idle.
624 - the default max number of idle C contexts is now 4.
625 - (libcoro) try harder to get _setjmp/_longjmp.
626 - (libcoro) cleanup and extend the libcoro API to officially
627 allow the creation of empty source contexts.
628 - very experimental workaround for the totally broken netbsd platform.
629 - tried to hack around openbsd bugs.
630
6314.804 Wed Nov 5 16:36:00 CET 2008
632 - Coro::Debug::new_unix_server would not create a non-blocking listening
633 socket, sometimes causing freezes.
634 - (libcoro) fix misaligned stack points for setjmp and assembly
635 methods, which can cause crashes on x86/x86_64 with a sufficiently
636 aggressive compiler.
637 - new function: Coro::Debug::new_tcp_server.
638 - move ->throw into the Coro class because it only works on coro objects.
639
6404.803 Mon Nov 3 17:16:12 CET 2008
641 - (libcoro) use a global asm statement to become independent of gcc
642 otpimisations for CORO_ASM (thanks to pippijn for the idea).
643 - try to workaround yet another broken bsd, this time dragonfly.
644
6454.802 Thu Oct 30 10:56:12 CET 2008
646 - support -fno-omit-frame-pointer on x86 with the assembly method.
647 - tune 01_unblock.t tests a bit.
648
6494.801 Wed Oct 22 18:33:37 CEST 2008
650 - improve readline speed for very long "lines".
651 - backport to 5.8.8.
652
6534.8 Thu Oct 2 13:34:40 CEST 2008
654 - new function Coro::AIO::aio_wait.
655 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
656 - greatly speed up and reduce memory usage of Coro::AIO requests.
657 - implement some other µ-optimisations.
658
6594.749 Mon Sep 29 14:40:12 CEST 2008
660 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
661
6624.748 Sat Sep 27 14:03:19 CEST 2008
663 - implement, but do not document, PerlIO::cede(granularity).
664 - Coro::Storable forgot to wrap Storable::pstore.
665 - work around the multitude of leaks and memory corruption
666 bugs in PerlIO::via by using our own C-level perliol. As a side
667 effect, Coro::Storable is now much, much, much faster.
668
6694.747 Tue Sep 23 01:59:41 CEST 2008
670 - fix a per-cv memleak (one empty array was leaked per
671 code reference).
672 - avoid a crash in coro->call|rss when the coroutine was already
673 destroyed (most noticably when using Coro::Debug::ps :)
674 - also protect *Storable::FILE.
675 - push up default storable granularity to 20ms.
676
6774.746 Sun Sep 21 03:22:20 CEST 2008
678 - be more insistent on locking Storable against reentrancy
679 in Coro::Storable.
680 - move swap_def?v and throw to Coro::State, as documented.
681
6824.745 Thu Jul 24 00:14:38 CEST 2008
683 - remove debugging code related to MgPV_nolen_const, also try to
684 make it compile with perl 5.8.6 (yes, apple apparently loves
685 outdated software). Reported by John S.
686
6874.744 Tue Jul 8 22:06:35 CEST 2008
688 - correctly provide default DIE/WARN handlers as documented.
689 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
690 implementations inside perl work fine for us.
691
6924.743 Mon Jun 16 00:21:57 CEST 2008
693 - when using Coro::EV without running EV::loop it could
694 result in busy-waiting for events, this has been fixed.
695 - reduce codesize and improve performance by using EV_DEFAULT_UC.
696
6974.742 Sat May 31 14:10:21 CEST 2008
698 - implement a workaround for (some) perl <5.8.8 versions.
699 - require EV 3.3+.
700
7014.741 Fri May 30 23:33:09 CEST 2008
702 - tell netbsd how utterly broken their imitation of an OS is
703 and refuse to build by default if pthreads are in use.
704 - switch to "s" method on all bsd's by default, as their ucontext
705 stuff seems just too broken.
706 - fix a bug in Coro::Select.
707
7084.74 Thu May 29 20:05:31 CEST 2008
709 - do not test Coro::LWP for lack of dependencies.
710 - do not test Coro::Select for lack of working perls.
711
7124.73 Thu May 29 2008
713 - fix a bug in Coro::EV which would cause it to block despite
714 there being runnable coroutines.
715 - sprinkle "no warnings" freely over everything, also suppress
716 warnings for some other modules.
717 - fix typo in WSAEWOULDBLOCK.
718
7194.72 Sun May 25 05:14:36 CEST 2008
720 - tweak META.yaml a bit, unfortunately, there is no documented way
721 to have optional dependencies with CPAN. doh :(
722 - avoid running some tests on windows because they would fail due to
723 perl bug (broken fork, broken pipes...).
724 - work around perl on windows bugs where perl returns undocumented
725 error codes for sysread, syswrite etc. by taking advantage
726 of AnyEvent's workaround for that problem.
727 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
728 a common perl implementation bug on windows.
729 - use unix domain sockets in testsuite to work around
730 common perl implementation bugs on widows (they are emulated by
731 tcp sockets on windows. ugh.)
732
7334.71 Sat May 24 20:01:27 CEST 2008
734 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
735 - take advantage of async name resolution of AnyEvent::Util.
736 - work around brutal inet_aton override in Coro::LWP.
737 - take advantage of the readyhook in Coro::EV, for smoother
738 scheduling.
739
7404.7 Sun May 11 00:32:19 CEST 2008
741 - completely reworked the Coro manpage.
742 - added Coro::AnyEvent, generic event loop integration.
743 - implement cancel, ready and kill commands in Coro::Debug.
744 - document find_coro in Coro::Debug.
745 - incompatible change: rename has_stack to has_cctx.
746 - Coro::AIO and Coro::BDB no longer force event model detection,
747 use AnyEvent::AIO and AnyEvent::BDB.
748
7494.6 Sat Apr 26 10:05:14 CEST 2008
750 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
751 by the Coro module. It was a mistake to have it in the first place.
752 - (experimental) support for activestate perl 5.10 (method "w").
753 - (experimental) support for strawberry perl (method "a").
754 - coro_sigelem_set did not return a value although it had to,
755 actual impact unknown.
756
7574.51 Mon Apr 14 13:28:27 CEST 2008
758 - make it compile again on 5.8.
759
7604.50 Thu Apr 10 09:43:17 CEST 2008
761 - I did it twice! (see 4.49).
762
7634.49 Sun Apr 6 21:23:31 CEST 2008
764 - grr, instead of compiling the recent changes on 5.10 only they
765 were compiled on 5.8 only.
766
7674.48 Sun Apr 6 20:36:46 CEST 2008
768 - allow coroutine switches during eval's under 5.10.x, as it seems
769 the parser is a per-interpreter option now, so this is safe
770 (this might fix the odd crashing bug).
771 - drop support for 5.9.x versions: they are dead, jim.
772
7734.47 Sun Apr 6 00:37:52 CEST 2008
774 - force cctx allocation on API calls: we know we need to force one
775 and gcc actually manages to confuse our heuristic nowadays,
776 leading to crashes and worse.
777 - document force_cctx.
778
7794.46 Fri Apr 4 22:05:43 CEST 2008
780 - upgrade libcoro, resulting in pthread-backend (which was only created
781 to fulfill the rules of the programming languages shootout).
782
7834.45 Thu Mar 13 11:55:36 CET 2008
784 - fix a file leaking bug in eg/mhyttpd that would allow
785 downloading of any file (reported by oesi).
786 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
787 (also add testcase).
788 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
789 apparently having loads of fun with that).
790 - implement $state->swap_defsv, ->swap_defav and document ->throw.
791
7924.4 Wed Feb 13 16:44:29 CET 2008
793 - only assume .cfi pseudo isns exist on GNU/Linux.
794 - add get_timed method to Coro::Channels.
795 - fixed Coro::Debug manpage.
796 - perl 5.11 compatbility improvement based on patch by
797 Andreas König.
798
7994.37 Sun Jan 20 11:25:23 CET 2008
800 - soften the check for an active parser for perl 5.10 (avoiding
801 "Coro::State::transfer called while parsing" in many cases).
802
8034.36 Sun Jan 13 10:53:56 CET 2008
804 - reset diehook when terminating from an async_pool as to not
805 trigger any __DIE__ handlers.
806
8074.35 Sun Jan 13 04:14:13 CET 2008
808 - "bt" debug command now displays any exceptions
809 from longmess and also skips the innermost
810 stackframes, giving more useufl output.
811 - allow backtraces in coroutines blocked in Coro::EV,
812 at a <1% speed hit.
813 - handle localising of $SIG{__WARN__} and __DIE__
814 properly (with a proper amount of dirty hacking).
815
8164.34 Sat Dec 22 17:49:53 CET 2007
817 - upgrade to EV version 2.0 API.
818
8194.33 Mon Dec 17 08:36:12 CET 2007
820 - make Coro::AIO etc. loadable in the absence of EV.
821
8224.32 Mon Dec 17 07:46:02 CET 2007
823 - majorly improved Coro::Handle's performance with Coro::EV.
824 - implemented the until now mythical Coro::BDB module.
825 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
826
8274.31 Wed Dec 5 12:32:39 CET 2007
828 - remove warn statement form Coro::Util.
829
8304.3 Tue Dec 4 20:33:14 CET 2007
831 - calls to the idle function could cause stack corruption
832 when the stack changed.
833 - do no longer rely on the presence of EV::DNS if EV is used
834 (because it is gone), but instead take avdantage of EV::ADNS
835 if available.
836 - add ($) prototypes to all functions in Coro::Storable.
837 - use a conventional (safer) idle callback in Coro::EV.
838 - do accept quickly in Coro::Debug to avoid endless loops.
839
8404.22 Fri Nov 30 16:04:04 CET 2007
841 - really use optimised versions for Event and EV in Coro::Util
842 and Coro::Handle.
843
8444.21 Sun Nov 25 10:48:59 CET 2007
845 - fix a spurious memory read.
846 - Coro::EV no longer keeps the eventloop "alive".
847
8484.2 Fri Nov 9 20:47:05 CET 2007
849 - enable/disable tracing from a new coroutine, not a pooled one.
850 - fix a memleak in Coro::Event.
851 - removed killall call from fork_eval.
852 - made sure store_fd is already loaded so that fork_eval
853 does not have to parse autoload in each subprocess.
854 - only use assembly method if -O switch is in $Config{optimize}.
855 - add (optional) Coro::EV module, so far the best event loop module
856 directly supported by Coro.
857 - if the event model is EV, use EV::DNS to resolve
858 stuff in Coro::Util.
859 - don't get confused by multiple event notifications in Coro::Handle.
860 - initial support for EV (libevent interface).
861 - require Event and EV using configure_requires, to force their existance.
862
8634.13 Wed Oct 24 07:26:45 CEST 2007
864 - add Coro::Storable::blocking_thaw.
865 - use a vastly more complicated technique to localise
866 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
867 - use a coroutine for the idle callback Coro::Event,
868 instead of running Event in the current coroutine context.
869 This also catches recursive invocations.
870 - actually report fork errors in gethostbyname and inet_aton.
871
8724.11 Thu Oct 11 02:40:24 CEST 2007
873 - port to threaded perls.
874
8754.1 Thu Oct 11 02:38:16 CEST 2007
876 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
877 be local to each coro (see Coro::State).
878 - incompatible change: for very deep reasons, cede and cede_notself
879 cannot return anything, so nothing will be returned.
880 - possibly bring back 5.10 compatibility (untested).
881 - work around stupid (and wrong) warning on 5.10 :(.
882 - overlay the saved state over the context stack. This saves
883 a few hundred bytes per coroutine on average and also
884 speeds up context switching a bit.
885 - further tune default stack sizes.
886 - (more) correctly calculate stack usage in coro_rss.
887 - Coro::Storable::blocking_* did not properly lock
888 resulting in races between coroutines.
889 - added Coro::Storable::guard.
890 - stopping to trace a coroutine could destroy the cctx of
891 an unrelated coroutine.
892 - explain the relationship between Perl and C coroutines in
893 more detail in Coro::State.
894 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
895 causing a fork per resolve. This also affected Coro::Socket.
896 - switch to a separate stack in $coro->call/eval to avoid
897 invalidating pointers.
898
8994.03 Sat Oct 6 21:24:00 CEST 2007
900 - added Coro::throw method.
901 - minor code cleanups.
902
9034.02 Sat Oct 6 02:36:47 CEST 2007
904 - fix a very minor per-coroutine memleak (a single codereference).
905 - fixed a bug where the currently in-use c context would be freed
906 prematurely (can happen only when programs change the stacksize
907 or use tracing).
908 - tracing can no longer keep a coro alive after it terminated.
909 - do static branch prediction in the common path for gcc. gives
910 about 2-5% speed improvement here.
911
9124.01 Fri Oct 5 22:10:49 CEST 2007
913 - instead of recreating *a* standard output handle we simply
914 use STDOUT, which is faster and hopefully more robust.
915
9164.0 Fri Oct 5 12:56:00 CEST 2007
917 - incompatibly changed Coro::Storable::freeze.
918 - major new feature: added Coro::Debug, for interactive coroutine
919 debugging, tracing and much more.
920 - major bug fix: unbelievable, but true: $_, $/ and many other
921 "saved" variables actually weren't being saved. This has been fixed,
922 of course, while increasing performance while losing all the save
923 flags.
924 - save flags are gone, and all the api functions dealing with them.
925 - added Coro::Semaphore::adjust.
926 - added Coro::Util::fork_eval.
927 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
928 - added Coro::killall.
929 - reduce initial stack sizes to allow for "micro-coroutines".
930 - better async_pool resource management, moved parts of async_pool
931 handling to XS (major speed improvement).
932 - actually croak before modifying important data structures.
933 - refuse to transfer while compiling.
934 - possibly support eval EXPR better now.
935 - enable assembly per default on linux+bsd x86+amd64.
936 - all internal members were renamed _something for easier subclassing.
937 - many minor tweaks.
938
9393.63 Wed May 16 14:10:06 CEST 2007
940 - implement handcoded assembly for x86/amd64 SVR ABI.
941
9423.62 Fri Apr 27 21:36:06 CEST 2007
943 - upgrade libcoro (which might set unwind info correctly).
944 - change default on linux to setjmp/longjmp.
9 945
103.61 Thu Apr 19 12:36:18 CEST 2007 9463.61 Thu Apr 19 12:36:18 CEST 2007
11 - Coro::Storable caused an endless loop when thawing invalid 947 - Coro::Storable caused an endless loop when thawing invalid
12 pst's sometimes. 948 pst's sometimes.
13 - use a Semaphore in Coro::Storable, as Storable doesn't 949 - use a Semaphore in Coro::Storable, as Storable doesn't
17 but stateful semantics. 953 but stateful semantics.
18 - fixed a lot of typos in Coro.pm (patch submitted by David 954 - fixed a lot of typos in Coro.pm (patch submitted by David
19 Steinbrunner, which applied flawlessly). 955 Steinbrunner, which applied flawlessly).
20 956
213.6 Sat Apr 14 17:13:31 CEST 2007 9573.6 Sat Apr 14 17:13:31 CEST 2007
22 - added some bugfixes to get eg/myhttpd working again. 958 - added some bugfixes to get eg/myhttpd working again.
23 - added Coro::Storable for often-cede'ing freeze/thaw. 959 - added Coro::Storable for often-cede'ing freeze/thaw.
24 - try to do a clean exit when a coroutine calls exit 960 - try to do a clean exit when a coroutine calls exit
25 (EXPERIMENTAL). 961 (EXPERIMENTAL).
26 - got rid of indirect call through _coro_init. 962 - got rid of indirect call through _coro_init.
27 - updated the partly antique examples in eg/ to 963 - updated the partly antique examples in eg/ to

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