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Comparing Coro/Changes (file contents):
Revision 1.217 by root, Wed Apr 11 03:05:15 2007 UTC vs.
Revision 1.655 by root, Fri Jun 17 04:49:22 2016 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: __GCC_HAVE_DWARF2_CFI_ASM
6TODO: swap_sv, maybe add scope_swap_sv, andallow to unswap by repeat?
7TODO: swap_sv not undone in pool
8TODO: croak when async_pool tries to run canceled thread?
5 9
10 - swap_sv swapping order was not symmetrical, causing
11 wrong swaps when swap_sv was used multiple times on the
12 same sv in the same thread.
13 - swap_sv calls can now be undone by calling it again
14 with the same variables.
15 - split Coro::Semaphore::up/adjust into separate xs functions
16 for better error reporting, at slight codesize increase.
17 - (libcoro) arm assembly support.
18
196.49 Sat Oct 17 01:40:12 CEST 2015
20 - throwing an exception to a thread waiting in
21 Coro::Handle using Coro::EV did not stop the watchers,
22 causing the next call to fail (testcase by Martin Pritchard).
23 - bump minimum perl version to 5.10.
24
256.48 Sun Oct 4 19:03:51 CEST 2015
26 - fix memory leak when Coro::Handle uses Coro::EV internally
27 (testcase by Sten Sten).
28 - update code to libev 4 API (internally, Coro still used the
29 version 3 API calls).
30 - remove unused hv_sig.
31
326.47 Sat Jul 11 03:58:20 CEST 2015
33 - swap_svs - NVs can be in the SV head beginning with 5.20.
34
356.46 Tue Jun 30 14:36:30 CEST 2015
36 - restore portability to perls with windows fork emulation
37 (patch by Petr Písař).
38
396.45 Tue Jun 30 01:40:08 CEST 2015
40 - restore portability to perl 5.16 and below.
41
426.44 Tue Jun 30 00:41:54 CEST 2015
43 - avoid segfaulting (or worse) when tracing a canceled thread.
44 - the Event module silently broke it's public hook API, causing
45 failures on perls compiled with -Duselongdouble. Requiring
46 the latest version of Event because I don't know which release
47 changed this (it's not mentioned in the ChangeLog).
48 - allow xs level enterleave hooks via CoroAPI.
49
506.43 Thu Jun 4 15:38:14 CEST 2015
51 - use stability canary.
52 - port to stableperl-5.22.0-1.001.
53 - update libecb.
54
556.42 Wed Feb 11 20:29:52 CET 2015
56 - Coro::SemaphoreSet->try did not actually work (analyzed by
57 SATO Kentaro).
58 - upgrade libecb to be C11 compliant.
59
606.41 Sat Sep 6 22:08:46 CEST 2014
61 - restore portability to perl 5.8.x.
62 - give new Coro's a valid GvHV(PL_hintgv) - this is slow and takes
63 up some memory, but fixes "use feature" and similar modules
64 when used inside a Coro.
65 - allow zero as argument to Coro::Channel to mean the same thing
66 as no argument. this works with older versions as well,
67 but wasn't legal until now.
68 - slightly better c header file detection.
69
706.39 Mon Jun 2 00:00:08 CEST 2014
71 - work around more incompatible changes in 5.20.
72
736.38 Sun Jun 1 21:54:23 CEST 2014
74 - check that perl slots actually have enough space to hold
75 interpreter variables.
76 - untested port to perl 5.19 (64 bit tmps indices) (reported
77 by Andreas König).
78 - croak when cancel is called without a thread context.
79
806.37 Tue Mar 4 13:27:33 CET 2014
81 - *sigh*, removed leftover debugging code from debugging a
82 perl bug, of all things.
83
846.36 Tue Mar 4 07:11:59 CET 2014
85 - semaphores would not clear the destroy hook when interrupted
86 by ->throw, causing segfaults or worse.
87 - ->throw on a thread waiting for a semaphore did not acquire
88 the semaphore, but also didn't wake up other waiters,
89 possibly causing a deadlock.
90 - "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
91 to report a full stacktrace, which should help find out
92 where the actual call is.
93 - "atomically" destroy data in slf_destroy, because it is
94 the right thing to do, just in case.
95 - disable ecb.h libm dependency, to compile on ancient systems
96 or under adverse conditions.
97
986.33 Mon Nov 18 11:26:27 CET 2013
99 - do not crash when freeing padlists with holes (in 5.18).
100 - tentative SVt_BIND 5.19 port/fix.
101
1026.32 Tue Nov 5 15:35:35 CET 2013
103 - use a new algorithm to derive padlists for perl 5.18. The old
104 one could lead to 0-pointer accesses inside perl (reported
105 by Darin McBride).
106
1076.31 Thu May 9 07:39:48 CEST 2013
108 - Coro::AIO requests would crash if the thread was ready'd
109 while the request was ongoing.
110
1116.29 Wed May 8 02:55:18 CEST 2013
112 - when an on_destroy handler destructs the coro currently being
113 destructed a perl scalar could be accessed after being freed,
114 likely causing a crash.
115
1166.28 Wed Mar 6 06:58:02 CET 2013
117 - clean remnants of existing __DIE__ and __WARN__ handlers so
118 they lose their magic and will not cause segfaults later
119 (testcase by Andrey Sagulin).
120 - improved Coro::State documentation a bit.
121 - Coro::Debug::command now flushes the output.
122 - add hack detection code for x32 abi, because the braindead slugs
123 who designed that made it look exactly like x86_64 without
124 providing proper compile time symbols to test for it. as a result,
125 this detection cannot work reliably.
126 - valgrind stack registering was broken.
127 - do not rely on Time::HiRes anymore in Coro::Debug.
128
1296.23 Fri Dec 7 23:36:37 CET 2012
130 - use experimental fiber implementation on native windows
131 perls.
132 - use sizeof (void *) as multiplication factor for stack sizes,
133 to accomodate the totally braindamaged microsoft 64 bit "os".
134 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
135 activeperl 5.16 crashes when PerlIO_define_layer is called due
136 to some bug in the perl dll, strawberry perl at least passes
137 the testsuite.
138 - implement Coro::Handle->peeraddr/host/port, for slightly
139 improved compatibility with LWP.
140 - implement 5.17 compatibility by almost blindly applying a
141 good-looking patch by Father Chrysostomos.
142 - move stack management functions into libcoro 3.
143 - libcoro version 3 "released".
144 - support magic values as timed_io_once args.
145 - recommend AnyEvent 7+ or EV 4+, also require EV
146 version 4 or newer for Coro::EV.
147
1486.10 Tue Oct 9 01:14:27 CEST 2012
149 - updated ecb.h, it had a typo that caused it to not compile on many
150 big endian systems (reported by many people).
151 - disable memory fences in ecb.h to improve portability.
152
1536.09 Sat Oct 6 23:25:02 CEST 2012
154 - Coro::EV I/O watchers were not interruptible by exceptions
155 (Coro::State::throw) (testcase by sten).
156 - ->throw now puts threads into the ready queue, as this seems to
157 be expected by existing code, and code that doesn't cope with spurious
158 wakeups needs fixing anyway.
159 - use fd -1 in mmap.
160 - cast I32 to int in error message printf.
161 - warn about broken so-called "hardened" kernels.
162
1636.08 Fri Apr 13 12:05:47 CEST 2012
164 - be more aggressive about exiting like perl does - formerly,
165 exiting from the non-main thread would not execute END blocks.
166
1676.07 Fri Nov 11 21:21:48 CET 2011
168 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
169 - update ecb.h.
170
1716.06 Mon Aug 8 23:59:48 CEST 2011
172 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
173 backend, which is an order of magnitude slower. unfortunately, cygwins
174 pthread implementation isn't very complete either, so allocate the stack
175 twice just to be sure.
176 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
177 in its ithreaded perl - best recompile cygwin and use the 'w'indows
178 backend for much better performance. also disable ithreads for
179 even better performance...).
180
1816.05 Thu Aug 4 21:36:36 CEST 2011
182 - blush, condvar values would not be propagated from send to recv anymore
183 (reported by Chip Salzenberg).
184 - use exponential increase for the readline buffer length in
185 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
186
1876.04 Wed Aug 3 17:15:45 CEST 2011
188 - use even more efficient and more compatible condvars for
189 compatibility to AnyEvent 6.x :)
190 - more inconsequential ecb.h updates.
191
1926.03 Wed Aug 3 11:41:30 CEST 2011
193 - change how Coro patches AnyEvent condvars for compatibility to
194 AnyEvent 6.x.
195 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
196 hasn't been included.
197
1986.02 Wed Jul 13 04:35:19 CEST 2011
199 - "improve portability to Gentoo" - gentoo manages to put perl variables
200 in memory areas that are farther than 2gb apart, which the jit couldn't
201 handle and barfed. now it's just a bit slower on gentoo and similar
202 systems.
203
2046.01 Sun Jul 3 12:31:14 CEST 2011
205 - workarounds are good, but the test for whether pthreads are used
206 was not good. this one should be better.
207 - check differently whether gcc generates cfi instructions itself.
208
2096.0 Wed Jun 29 19:43:35 CEST 2011
210 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
211 destroyed and cleaned up automatically (e.g. async { schedule }).
212 - implement a JIT compiler for part of the thread switch code,
213 which gives a 50% speed improvement on threaded perls, and
214 about 4% on non-threaded perls (so threaded perls now finally
215 reach about half the speed of non-threaded perls).
216 - slightly modernise Coro::Intro, add section about rouse functions.
217 - avoid DEFSV and ERRSV, giving another 10% improvement
218 in thread switching.
219 - Coro::State->is_destroyed is now called is_zombie.
220 - implement a Coro->safe_cancel method that might fail, but
221 cancels in a "safer" way if it succeeds.
222 - add preliminary support for DEBUGGING perls.
223 - get rid of two hash-accesses when initialising a new Coro - this
224 speeds up coro creation by almost a factor of two.
225 - croak when a coro that is being cancelled tries to block
226 (e.g. while executing a guard block), instead of crashing or
227 deadlocking.
228 - use a more robust and also faster method to identify Coro::State
229 objects - speeds up everything a bit.
230 - implement Coro->cancel in XS for a 20% speed improvement, and to
231 be able to implement mutual cancellation.
232 - speed up context switches by a percent or two by more efficiently
233 allocating context stack entries.
234 - implement Coro->join and Coro->on_destroy in XS for a speedup and
235 a reduction in memory use.
236 - cancelling a coro while it itself is cancelling another coro is
237 now supported and working, instead of triggering an assertion.
238 - be a bit more crash-resistant when calling (buggy) on_destroy
239 callbacks (best effort).
240 - move on_destroy into the slf_frame, to allow extension slf
241 functions to have destructors.
242 - get rid if coro refcounting - simply crash in other interpreter
243 threads by nulling the pointers on clone.
244 - simplify warn/die hook handling when loading Coro - the convoluted
245 logic seems to be no longer neccessary.
246 - use libecb instead of our own home-grown gcc hacks.
247 - document alternatives to Coro::LWP. Please use them :)
248 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
249 sigaltstack. Really. wine suffers from it, erlang suffers from it,
250 and it's known since at least 2006.
251
2525.372 Wed Feb 23 06:14:30 CET 2011
253 - apparently mingw doesn't provide a working gettimeofday, try to
254 work around that by relying on Time::HiRes (indirectly brought to
255 my attention by Max Maischein).
256 - fix some portability issues when Time::HiRes was used.
257
2585.371 Mon Feb 21 14:36:08 CET 2011
259 - backport to windows process emulation code again.
260
2615.37 Sat Feb 19 07:49:44 CET 2011
262 - add a big "Coro thread life cycle" section to "man Coro".
263 - try a tentative workaround against the breakage that 5.13 has
264 introduced without depreciation period. sigh.
265 - no longer use Time::HiRes if gettimeofday is available, which
266 saves quite a lot of memory.
267
2685.36 Sun Feb 13 05:33:41 CET 2011
269 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
270 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
271 method call.
272 - undocument Coro::Timer::sleep and obsolete whole module.
273 - optimise Coro::Timer::timeout memory and cpu usage.
274 - slightly updated Coro::Intro for recent changes.
275 - do not initialise PL_dirty anymore.
276
2775.25 Thu Nov 11 01:08:39 CET 2010
278 - try a different approach on netbsd - netbsd 5 finally has marginally
279 working pthreads, but still broken ucontext/sigaltstack.
280 - openbsd 4.8 finally got their act together, Coro works out of the box
281 with asm, setjmp and pthreads (no change, just informational).
282
2835.24 Sat Oct 23 11:27:12 CEST 2010
284 - port to the EV 4.0 API.
285 - work around bugs in mingw32, making strawberry perl work
286 out of the box.
287 - correctly modify Coro::AIO function prototypes
288 so that they reflect the "no optional parameters" rule.
289 - "ported" libcoro to C++.
290
2915.23 Mon May 17 18:50:42 CEST 2010
292 - be more resistant to ordering changes when initialising
293 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
294 Waldorf).
295 - document that perl 5.12 deliberately removed support for cloning.
296
2975.22 Wed Apr 14 03:55:35 CEST 2010
298 - correctly return udnef on errors in Coro::Handle::read/write
299 (testcase by Marc Mims).
300 - convert Coro::Util into a "perl compatibility wrapper" - the functions
301 are less useful now, but are drop-in replacements for existing
302 functions, listing better alternatives in the documentation. This also
303 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
304 with Coro::Util::inet_aton.
305 - do not override $Coro::idle unconditionally in Coro.pm, as other
306 modules could have provided their own idle coro already
307 (for exmaple, Coro::AnyEvent).
308 - fix Coro::Util::gethost* functions.
309 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
310
3115.21 Wed Dec 16 07:19:51 CET 2009
312 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
313 together.
314 - add some examples on how to combine other event loops with Coro in
315 Coro::AnyEvent, and how to run it (and not to block). Seems to be
316 the most common source of confusion.
317 - try to catch people naively blocking in an event callback.
318 - work around the perl filehandle bug issue in conjunction with
319 older common::sense (as indirectly pointed out by ZSystem).
320 - clarify the "not from signal handlers" section.
321
3225.2 Sun Oct 4 14:54:24 CEST 2009
323 - Coro::Storable destroyed the prototypes of the functions it wrapped.
324 - export rouse_cb and rouse_wait by default now.
325 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
326 - new method $state->swap_sv.
327 - added section on "windows process emulation" to the manpage,
328 after a not-so-fruitful (nor-friendly) "discussion" with chip
329 salzenberg (discussion implies arguments, but his only arguments
330 were ad-hominems, one wonders why he started it in the first
331 place). I hope this explains it well enough for him to understand,
332 and maybe well enough for others to understand.
333 - use common::sense everywhere now.
334 - idle callbacks are no longer supported, use idle coros instead.
335 - print a thread listing when a deadlock is detected.
336
3375.17 Sat Aug 22 23:09:31 CEST 2009
338 - work around a bug in the perl debugger causing crashes
339 when running under the debugger by marking _pool_handler as nodebug.
340 - speed up Coro::async considerably.
341 - try some hacks to get netbsd to work "more often" - their broken
342 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
343 - convert Coro to AE 5.0 API.
344
3455.162 Tue Jul 28 04:04:03 CEST 2009
346 - perl 5.8.2 is now minimum requirement.
347 - skip t/19_handle.t on broken windows perls.
348
3495.161 Wed Jul 22 04:47:38 CEST 2009
350 - Coro::AnyEvent::poll could have a different prototype when EV was
351 used as backend (analyzed by Tatsuhiko Miyagawa).
352 - Coro::AnyEvent errornously initialised the event loop when loaded,
353 not on demand.
354 - try to workaround rare */t/01_unblock.t failures.
355
3565.16 Tue Jul 21 01:44:37 CEST 2009
357 - Coro::AnyEvent failed to hook into the event loop
358 when no threads had been readied between detecting
359 the event loop and actually running it.
360 - considerably speed up Coro::Select by taking avdantage
361 of AnyEvent > 4.8 and some other optimisations.
362 - implement paragraph readline mode in Coro::Handle
363 (based on patches by Zsbán Ambrus).
364 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
365 and analyzed by Yasuhiro MATSUMOTO).
366 - clarified libcoro license and copyright.
367 - someone stole my EXTRA_META!!!
368 - implement Coro::Select::patch_pp_sselect and it's brother,
369 for hardcode select overriding.
370
3715.151 Mon Jul 6 05:41:57 CEST 2009
372 - backport to windows process emulation code again (patch by
373 Yasuhiro MATSUMOTO).
374 - slightly update Coro::MakeMaker.
375
3765.15 Tue Jun 30 10:28:06 CEST 2009
377 - deprecate Coro::Socket, document how to get ipv6 support via
378 AnyEvent::Socket instead.
379 - implement signal->wait ($cb) interface, similar to semaphores.
380 - work around SvOK not supporting getmagic, so we have to getmagic
381 to test for undef :/ (reported by Matthias Waldorf).
382 - load Coro::AnyEvent in all modules using AnyEvent.
383 - work around perl corrupting our internal data structures,
384 reported by Tokuhiro Matsuno.
385 - enable per-coroutine real and cpu time gathering
386 (Coro::State::enable_times).
387
3885.14 Wed Jun 24 01:37:48 CEST 2009
389 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
390 as this seems to have been a difficult concept (poll, sleep, idle,
391 idle_upto).
392 - add Coro::AnyEvent::readable/writable functions.
393 - clarify Coro::EV/Event/AnyEvent manpages.
394 - free per-thread global scalars in the thread calling ->cancel, to
395 avoid crashes when $_, $@ etc., are magical but some of those
396 had already been freed.
397 - "unexperimentalise" the callback interface for Coro::Semaphore.
398 - speed up ready queue management/context switching by using a linked
399 list instead of an array (~5-10%).
400 - implement "watch" command in Coro::Debug shells.
401 - for fun, implement time-slicing as an example in the manpage.
402 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
403 Coro::Event, use the normal AnyEvent handling instead of dieing
404 (the same is true for Coro::Handle).
405 - properly document Coro::EV::timed_io_once.
406 - avoid unneccessary ->cancel calls in Coro::Handle.
407 - maybe make it work on mingw32 with win32 backend
408 (based on patch by Yasuhiro Matsumoto).
409
4105.132 Fri May 29 09:00:39 CEST 2009
411 - do not keep a reference to the argument itself in
412 Coro::Semaphore::guard, as it could change later.
413 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
414 should support a prepare callback.
415
4165.131 Mon Mar 16 23:20:37 CET 2009
417 - implement and document Coro->suspend, Coro->resume.
418 - fix Coro::Select implementation to not (often) close
419 the passed file descriptors (testcase provided by pippijn).
420
4215.13 Mon Dec 15 21:51:42 CET 2008
422 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
423 - don't set diehook to C<undef> but instead to NULL, to avoid
424 spurious warnings.
425 - fix a lot of bugs in Coro::SemaphoreSet.
426 - Coro::SemaphoreSet will less often create a semaphore needlessly.
427 - add Coro::SemaphoreSet::count and wait methods.
428 - take advantage of the new Guard module.
429 - deprecate Coro::guard.
430 - try to fix the dreaded 01_unblock tests once more. I hate it when
431 testsuites need more fixing than the code they are supposed to test.
432 - croak in more cases when a required callback isn't resolvable.
433 - fix some minor issues in Coro::State->call/eval.
434 - use current coroutine context instead of a temporary one
435 when temporarily switching to another coroutine.
436 - do not call C-level on_destroy handlers during global destruction,
437 to avoid needless segfaults.
438
4395.12 Sun Dec 7 13:30:38 CET 2008
440 - add default config for MirOS, which seems to be a bug-to-bug
441 compatible fork of openbsd ("world domination by releasing
442 openbsd cvs before the openbsd folks do it" or so :).
443 - free_padlist did destroy the names pad, not good, but didn't
444 seem to bother perl - this could fix issues such as eval ""
445 inside a function called from multiple coroutines.
446 - use a different method to detect destruction time.
447 - be more careful when freeing padlists just before global
448 destruction.
449 - fixed and expanded the call/cc example.
450 - renamed _terminate to _coro_run.
451 - new method Coro::Channel->shutdown.
452 - try pthreads on openbsd <4.4 (broken sigaltstack, will
453 pthreads fare better?).
454 - be less picky about destroying "a" running coroutine.
455
4565.11 Tue Nov 25 21:49:05 CET 2008
457 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
458 working code with failed assertions, introducing more bugs than
459 it fixes, requiring elaborate workarounds :(
460
4615.1 Mon Nov 24 08:54:59 CET 2008
462 - wrote a small introductory tutorial - Coro::Intro.
463 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
464 - Coro::Select did errornously dup the file descriptors
465 and didn't work with all AnyEvent backends.
466 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
467 LWP data transfers.
468 - disassociate c contexts from coro objects - this is agruably more
469 correct, but mostly allows sharing of cctxs between coro and state
470 objects, for added memory savings and speed increases.
471 - bumped $Coro::POOL_RSS up to 32kb by default.
472 - no longer set the optype to OP_CUSTOM, as B::* understandably
473 doesn't like this very much (and we *are* a type of entersub).
474 - implement state cloning, just to prove that call/cc can be done.
475 - automatically load Coro::AnyEvent in Coro::Handle.
476 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
477 do not have this method (and don't need it either).
478 - speed up generic anyevent methods in Coro::Handle by using rouse
479 callbacks.
480 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
481 others. It also makes the debugger happier, as you can trace
482 through the idle threads now.
483 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
484 - eg/event was pretty broken.
485 - better 5.8.6 compatibility.
486
4875.0 Thu Nov 20 10:35:05 CET 2008
488 - NEW ARCHITECTURE: use the latest 4.x version if you experience
489 stability issues.
490 - bump API version to 7 - all dependents must be recompiled.
491 - removed timed_* functions - they were not being used anyways
492 and should be replaced by a more generic mechanism -
493 and were annoying to support anyways :)
494 - removed SemaphoreSet's waiter method - use sem method instead.
495 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
496 - async_pool did free a scalar value twice
497 ("Attempt to unreference...").
498 - fix a longstanding bug where calling terminate on a coro that
499 was waiting for a semaphore that was just becoming available
500 would cause a deadlock (semaphore would get into a state where
501 it was available but waiters were still blocked).
502 - calling throw on a coroutine that is waiting for a semaphore will
503 no longer make it acquire the semaphore (and thus leak a count).
504 - perl's process emulation is now not even theoretically supported
505 anymore.
506 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
507 conversion of callback-style to blocking-style.
508 - new methods $coro->schedule_to and ->cede_to, to specifically
509 schedule or cede to a specific coroutine.
510 - new function Coro::Semaphore::wait.
511 - use named constants in Coro::Channel (Richard Hundt).
512 - directly patch the entersub opcode calling SLF functions (cede,
513 transfer and so on). this does speed up context switching, but
514 more importanly, it frees us from the hardcoded behaviour of
515 entersub, so we might actually be able to return something from
516 those functions and atcually create new ones.
517 - take advantage of __builtin_frame_address on gcc.
518 - expose THX in coroapi (not sure whether this was a wise decision,
519 as "threaded" perls are running at half speed anyways).
520 - implement execute_slf (schedule-like-function) interface that makes
521 it possible to implement schedule-like-functions in XS.
522 - use new SLF interface to massively speed up Coro::EV by roughly a
523 factor of two.
524 - used new SLF interface to massively speed up Coro::Semaphore by a
525 factor of three.
526 - used new SLF interface to speed up Coro::AIO by roughly a factor of
527 four and reduce its memory usage considerably.
528 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
529 for a nice speedup and vastly more correct behaviour. Also implement
530 a new method "sem" to get at the underlying semaphore object.
531 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
532 (in comparison) 20-40% speedup.
533 - used new SLF interface to reimplement Coro::Signal gaining
534 some unknown (because I was too lazy), but certain, speedup, and also
535 making signals reliable for the first time.
536 - used new SLF interface and other optimisations to speed up async_pool
537 by a factor of two. It also doesn't rely on perl's exception mechanism
538 to exit anymore. The overhead for terminating an async_pool, coro over
539 a normal async is now very small.
540 - sped up coroutine creation/destruction by 40%.
541 - forgot to include Coro/libcoro/README in the dist for all these years.
542 - work around a freebsd pthreads bug (manual testcancel is required as
543 pthread_cond_wait isn't a cancellation point on freebsd).
544 - use new rouse functions to speed up and simplify Coro::BDB.
545 - make "prefer perl native functions" work with threaded perls.
546 - condense Coro::Debug ps output, hint at v and w flags.
547 - (libcoro) lots of minor cleanups and portability improvements.
548
5494.914 Wed Nov 19 12:54:18 CET 2008
550 - fix a disastrous bug in the readline optimisation
551 introduced in 4.801.
552
5534.913 Sat Nov 15 07:58:28 CET 2008
554 - async_pool did free a scalar value twice
555 ("Attempt to unreference...").
556
5574.912 Thu Nov 13 18:31:23 CET 2008
558 - minor cleanups.
559 - use much larger stacks on linux and perl < 5.8.8.
560 - Coro::Debug::new_unix_server did not unlink the socket
561 when destroyed.
562
5634.911 Tue Nov 11 04:26:17 CET 2008
564 - "port" to threaded perls.
565
5664.91 Mon Nov 10 05:36:38 CET 2008
567 - the ->throw exception object no longer leaks.
568 - creating a new cctx leaked a scopestack entry (memleak).
569 - new coroutines didn't get created with a zero flags field
570 (unknown impact).
571 - calling ->throw on a not-yet-started coroutine should now work
572 instead of being ignored.
573 - ->throw is now supported on Coro::State objects.
574 - clean up cctx creation code a bit.
575 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
576
5774.9 Sat Nov 8 17:45:27 CET 2008
578 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
579 - (libcoro) no longer leak threads in the experimental pthread backend,
580 also speed it up considerably.
581 - (libcoro) do not rely on makecontext passing void *'s unscathed.
582 - fix compiletime dependencies on libcoro in the Makefile.
583 - cctx_count wasn't always updated properly.
584 - Coro::State::cctx_stacksize wasn't applied correctly.
585 - new function Coro::State::cctx_max_idle.
586 - the default max number of idle C contexts is now 4.
587 - (libcoro) try harder to get _setjmp/_longjmp.
588 - (libcoro) cleanup and extend the libcoro API to officially
589 allow the creation of empty source contexts.
590 - very experimental workaround for the totally broken netbsd platform.
591 - tried to hack around openbsd bugs.
592
5934.804 Wed Nov 5 16:36:00 CET 2008
594 - Coro::Debug::new_unix_server would not create a non-blocking listening
595 socket, sometimes causing freezes.
596 - (libcoro) fix misaligned stack points for setjmp and assembly
597 methods, which can cause crashes on x86/x86_64 with a sufficiently
598 aggressive compiler.
599 - new function: Coro::Debug::new_tcp_server.
600 - move ->throw into the Coro class because it only works on coro objects.
601
6024.803 Mon Nov 3 17:16:12 CET 2008
603 - (libcoro) use a global asm statement to become independent of gcc
604 otpimisations for CORO_ASM (thanks to pippijn for the idea).
605 - try to workaround yet another broken bsd, this time dragonfly.
606
6074.802 Thu Oct 30 10:56:12 CET 2008
608 - support -fno-omit-frame-pointer on x86 with the assembly method.
609 - tune 01_unblock.t tests a bit.
610
6114.801 Wed Oct 22 18:33:37 CEST 2008
612 - improve readline speed for very long "lines".
613 - backport to 5.8.8.
614
6154.8 Thu Oct 2 13:34:40 CEST 2008
616 - new function Coro::AIO::aio_wait.
617 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
618 - greatly speed up and reduce memory usage of Coro::AIO requests.
619 - implement some other µ-optimisations.
620
6214.749 Mon Sep 29 14:40:12 CEST 2008
622 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
623
6244.748 Sat Sep 27 14:03:19 CEST 2008
625 - implement, but do not document, PerlIO::cede(granularity).
626 - Coro::Storable forgot to wrap Storable::pstore.
627 - work around the multitude of leaks and memory corruption
628 bugs in PerlIO::via by using our own C-level perliol. As a side
629 effect, Coro::Storable is now much, much, much faster.
630
6314.747 Tue Sep 23 01:59:41 CEST 2008
632 - fix a per-cv memleak (one empty array was leaked per
633 code reference).
634 - avoid a crash in coro->call|rss when the coroutine was already
635 destroyed (most noticably when using Coro::Debug::ps :)
636 - also protect *Storable::FILE.
637 - push up default storable granularity to 20ms.
638
6394.746 Sun Sep 21 03:22:20 CEST 2008
640 - be more insistent on locking Storable against reentrancy
641 in Coro::Storable.
642 - move swap_def?v and throw to Coro::State, as documented.
643
6444.745 Thu Jul 24 00:14:38 CEST 2008
645 - remove debugging code related to MgPV_nolen_const, also try to
646 make it compile with perl 5.8.6 (yes, apple apparently loves
647 outdated software). Reported by John S.
648
6494.744 Tue Jul 8 22:06:35 CEST 2008
650 - correctly provide default DIE/WARN handlers as documented.
651 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
652 implementations inside perl work fine for us.
653
6544.743 Mon Jun 16 00:21:57 CEST 2008
655 - when using Coro::EV without running EV::loop it could
656 result in busy-waiting for events, this has been fixed.
657 - reduce codesize and improve performance by using EV_DEFAULT_UC.
658
6594.742 Sat May 31 14:10:21 CEST 2008
660 - implement a workaround for (some) perl <5.8.8 versions.
661 - require EV 3.3+.
662
6634.741 Fri May 30 23:33:09 CEST 2008
664 - tell netbsd how utterly broken their imitation of an OS is
665 and refuse to build by default if pthreads are in use.
666 - switch to "s" method on all bsd's by default, as their ucontext
667 stuff seems just too broken.
668 - fix a bug in Coro::Select.
669
6704.74 Thu May 29 20:05:31 CEST 2008
671 - do not test Coro::LWP for lack of dependencies.
672 - do not test Coro::Select for lack of working perls.
673
6744.73 Thu May 29 2008
675 - fix a bug in Coro::EV which would cause it to block despite
676 there being runnable coroutines.
677 - sprinkle "no warnings" freely over everything, also suppress
678 warnings for some other modules.
679 - fix typo in WSAEWOULDBLOCK.
680
6814.72 Sun May 25 05:14:36 CEST 2008
682 - tweak META.yaml a bit, unfortunately, there is no documented way
683 to have optional dependencies with CPAN. doh :(
684 - avoid running some tests on windows because they would fail due to
685 perl bug (broken fork, broken pipes...).
686 - work around perl on windows bugs where perl returns undocumented
687 error codes for sysread, syswrite etc. by taking advantage
688 of AnyEvent's workaround for that problem.
689 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
690 a common perl implementation bug on windows.
691 - use unix domain sockets in testsuite to work around
692 common perl implementation bugs on widows (they are emulated by
693 tcp sockets on windows. ugh.)
694
6954.71 Sat May 24 20:01:27 CEST 2008
696 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
697 - take advantage of async name resolution of AnyEvent::Util.
698 - work around brutal inet_aton override in Coro::LWP.
699 - take advantage of the readyhook in Coro::EV, for smoother
700 scheduling.
701
7024.7 Sun May 11 00:32:19 CEST 2008
703 - completely reworked the Coro manpage.
704 - added Coro::AnyEvent, generic event loop integration.
705 - implement cancel, ready and kill commands in Coro::Debug.
706 - document find_coro in Coro::Debug.
707 - incompatible change: rename has_stack to has_cctx.
708 - Coro::AIO and Coro::BDB no longer force event model detection,
709 use AnyEvent::AIO and AnyEvent::BDB.
710
7114.6 Sat Apr 26 10:05:14 CEST 2008
712 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
713 by the Coro module. It was a mistake to have it in the first place.
714 - (experimental) support for activestate perl 5.10 (method "w").
715 - (experimental) support for strawberry perl (method "a").
716 - coro_sigelem_set did not return a value although it had to,
717 actual impact unknown.
718
7194.51 Mon Apr 14 13:28:27 CEST 2008
720 - make it compile again on 5.8.
721
7224.50 Thu Apr 10 09:43:17 CEST 2008
723 - I did it twice! (see 4.49).
724
7254.49 Sun Apr 6 21:23:31 CEST 2008
726 - grr, instead of compiling the recent changes on 5.10 only they
727 were compiled on 5.8 only.
728
7294.48 Sun Apr 6 20:36:46 CEST 2008
730 - allow coroutine switches during eval's under 5.10.x, as it seems
731 the parser is a per-interpreter option now, so this is safe
732 (this might fix the odd crashing bug).
733 - drop support for 5.9.x versions: they are dead, jim.
734
7354.47 Sun Apr 6 00:37:52 CEST 2008
736 - force cctx allocation on API calls: we know we need to force one
737 and gcc actually manages to confuse our heuristic nowadays,
738 leading to crashes and worse.
739 - document force_cctx.
740
7414.46 Fri Apr 4 22:05:43 CEST 2008
742 - upgrade libcoro, resulting in pthread-backend (which was only created
743 to fulfill the rules of the programming languages shootout).
744
7454.45 Thu Mar 13 11:55:36 CET 2008
746 - fix a file leaking bug in eg/mhyttpd that would allow
747 downloading of any file (reported by oesi).
748 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
749 (also add testcase).
750 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
751 apparently having loads of fun with that).
752 - implement $state->swap_defsv, ->swap_defav and document ->throw.
753
7544.4 Wed Feb 13 16:44:29 CET 2008
755 - only assume .cfi pseudo isns exist on GNU/Linux.
756 - add get_timed method to Coro::Channels.
757 - fixed Coro::Debug manpage.
758 - perl 5.11 compatbility improvement based on patch by
759 Andreas König.
760
7614.37 Sun Jan 20 11:25:23 CET 2008
762 - soften the check for an active parser for perl 5.10 (avoiding
763 "Coro::State::transfer called while parsing" in many cases).
764
7654.36 Sun Jan 13 10:53:56 CET 2008
766 - reset diehook when terminating from an async_pool as to not
767 trigger any __DIE__ handlers.
768
7694.35 Sun Jan 13 04:14:13 CET 2008
770 - "bt" debug command now displays any exceptions
771 from longmess and also skips the innermost
772 stackframes, giving more useufl output.
773 - allow backtraces in coroutines blocked in Coro::EV,
774 at a <1% speed hit.
775 - handle localising of $SIG{__WARN__} and __DIE__
776 properly (with a proper amount of dirty hacking).
777
7784.34 Sat Dec 22 17:49:53 CET 2007
779 - upgrade to EV version 2.0 API.
780
7814.33 Mon Dec 17 08:36:12 CET 2007
782 - make Coro::AIO etc. loadable in the absence of EV.
783
7844.32 Mon Dec 17 07:46:02 CET 2007
785 - majorly improved Coro::Handle's performance with Coro::EV.
786 - implemented the until now mythical Coro::BDB module.
787 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
788
7894.31 Wed Dec 5 12:32:39 CET 2007
790 - remove warn statement form Coro::Util.
791
7924.3 Tue Dec 4 20:33:14 CET 2007
793 - calls to the idle function could cause stack corruption
794 when the stack changed.
795 - do no longer rely on the presence of EV::DNS if EV is used
796 (because it is gone), but instead take avdantage of EV::ADNS
797 if available.
798 - add ($) prototypes to all functions in Coro::Storable.
799 - use a conventional (safer) idle callback in Coro::EV.
800 - do accept quickly in Coro::Debug to avoid endless loops.
801
8024.22 Fri Nov 30 16:04:04 CET 2007
803 - really use optimised versions for Event and EV in Coro::Util
804 and Coro::Handle.
805
8064.21 Sun Nov 25 10:48:59 CET 2007
807 - fix a spurious memory read.
808 - Coro::EV no longer keeps the eventloop "alive".
809
8104.2 Fri Nov 9 20:47:05 CET 2007
811 - enable/disable tracing from a new coroutine, not a pooled one.
812 - fix a memleak in Coro::Event.
813 - removed killall call from fork_eval.
814 - made sure store_fd is already loaded so that fork_eval
815 does not have to parse autoload in each subprocess.
816 - only use assembly method if -O switch is in $Config{optimize}.
817 - add (optional) Coro::EV module, so far the best event loop module
818 directly supported by Coro.
819 - if the event model is EV, use EV::DNS to resolve
820 stuff in Coro::Util.
821 - don't get confused by multiple event notifications in Coro::Handle.
822 - initial support for EV (libevent interface).
823 - require Event and EV using configure_requires, to force their existance.
824
8254.13 Wed Oct 24 07:26:45 CEST 2007
826 - add Coro::Storable::blocking_thaw.
827 - use a vastly more complicated technique to localise
828 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
829 - use a coroutine for the idle callback Coro::Event,
830 instead of running Event in the current coroutine context.
831 This also catches recursive invocations.
832 - actually report fork errors in gethostbyname and inet_aton.
833
8344.11 Thu Oct 11 02:40:24 CEST 2007
835 - port to threaded perls.
836
8374.1 Thu Oct 11 02:38:16 CEST 2007
838 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
839 be local to each coro (see Coro::State).
840 - incompatible change: for very deep reasons, cede and cede_notself
841 cannot return anything, so nothing will be returned.
842 - possibly bring back 5.10 compatibility (untested).
843 - work around stupid (and wrong) warning on 5.10 :(.
844 - overlay the saved state over the context stack. This saves
845 a few hundred bytes per coroutine on average and also
846 speeds up context switching a bit.
847 - further tune default stack sizes.
848 - (more) correctly calculate stack usage in coro_rss.
849 - Coro::Storable::blocking_* did not properly lock
850 resulting in races between coroutines.
851 - added Coro::Storable::guard.
852 - stopping to trace a coroutine could destroy the cctx of
853 an unrelated coroutine.
854 - explain the relationship between Perl and C coroutines in
855 more detail in Coro::State.
856 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
857 causing a fork per resolve. This also affected Coro::Socket.
858 - switch to a separate stack in $coro->call/eval to avoid
859 invalidating pointers.
860
8614.03 Sat Oct 6 21:24:00 CEST 2007
862 - added Coro::throw method.
863 - minor code cleanups.
864
8654.02 Sat Oct 6 02:36:47 CEST 2007
866 - fix a very minor per-coroutine memleak (a single codereference).
867 - fixed a bug where the currently in-use c context would be freed
868 prematurely (can happen only when programs change the stacksize
869 or use tracing).
870 - tracing can no longer keep a coro alive after it terminated.
871 - do static branch prediction in the common path for gcc. gives
872 about 2-5% speed improvement here.
873
8744.01 Fri Oct 5 22:10:49 CEST 2007
875 - instead of recreating *a* standard output handle we simply
876 use STDOUT, which is faster and hopefully more robust.
877
8784.0 Fri Oct 5 12:56:00 CEST 2007
879 - incompatibly changed Coro::Storable::freeze.
880 - major new feature: added Coro::Debug, for interactive coroutine
881 debugging, tracing and much more.
882 - major bug fix: unbelievable, but true: $_, $/ and many other
883 "saved" variables actually weren't being saved. This has been fixed,
884 of course, while increasing performance while losing all the save
885 flags.
886 - save flags are gone, and all the api functions dealing with them.
887 - added Coro::Semaphore::adjust.
888 - added Coro::Util::fork_eval.
889 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
890 - added Coro::killall.
891 - reduce initial stack sizes to allow for "micro-coroutines".
892 - better async_pool resource management, moved parts of async_pool
893 handling to XS (major speed improvement).
894 - actually croak before modifying important data structures.
895 - refuse to transfer while compiling.
896 - possibly support eval EXPR better now.
897 - enable assembly per default on linux+bsd x86+amd64.
898 - all internal members were renamed _something for easier subclassing.
899 - many minor tweaks.
900
9013.63 Wed May 16 14:10:06 CEST 2007
902 - implement handcoded assembly for x86/amd64 SVR ABI.
903
9043.62 Fri Apr 27 21:36:06 CEST 2007
905 - upgrade libcoro (which might set unwind info correctly).
906 - change default on linux to setjmp/longjmp.
907
9083.61 Thu Apr 19 12:36:18 CEST 2007
909 - Coro::Storable caused an endless loop when thawing invalid
910 pst's sometimes.
911 - use a Semaphore in Coro::Storable, as Storable doesn't
912 seem to be reentrant (although it is documented to
913 be threadsafe...).
914 - fix Coro::Signal to bring back the original unreliable
915 but stateful semantics.
916 - fixed a lot of typos in Coro.pm (patch submitted by David
917 Steinbrunner, which applied flawlessly).
918
9193.6 Sat Apr 14 17:13:31 CEST 2007
6 - added some bugfixes to get eg/myhttpd working again. 920 - added some bugfixes to get eg/myhttpd working again.
921 - added Coro::Storable for often-cede'ing freeze/thaw.
922 - try to do a clean exit when a coroutine calls exit
923 (EXPERIMENTAL).
924 - got rid of indirect call through _coro_init.
925 - updated the partly antique examples in eg/ to
926 work again and be a bit less magic, too.
927 - fixed Coro::Signal semantics to work as documented again.
7 928
83.55 Sun Mar 25 01:20:47 CET 2007 9293.55 Sun Mar 25 01:20:47 CET 2007
9 - add SAVE_DEFFH to save the default filehandle and enable 930 - add SAVE_DEFFH to save the default filehandle and enable
10 it by default. 931 it by default.
11 - finally move socket-operations from Coro::Socket to Coro::Handle 932 - finally move socket-operations from Coro::Socket to Coro::Handle

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