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Comparing Coro/Changes (file contents):
Revision 1.202 by root, Sat Jan 20 19:52:15 2007 UTC vs.
Revision 1.643 by root, Mon Jun 29 22:42:33 2015 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: fast reloads in cf cause segfaults (coro_state_free->destroy->crash) 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?
6 9
73.41 106.44 Tue Jun 30 00:41:54 CEST 2015
11 - avoid segfaulting (or worse) when tracing a canceled thread.
12 - the Event module silently broke it's public hook API, causing
13 failures on perls compiled with -Duselongdouble. Requiring
14 the latest version of Event because I don't know which release
15 changed this (it's not mentioned in the ChangeLog).
16 - allow xs level enterleave hooks via CoroAPI.
17
186.43 Thu Jun 4 15:38:14 CEST 2015
19 - use stability canary.
20 - port to stableperl-5.22.0-1.001.
21 - update libecb.
22
236.42 Wed Feb 11 20:29:52 CET 2015
24 - Coro::SemaphoreSet->try did not actually work (analyzed by
25 SATO Kentaro).
26 - upgrade libecb to be C11 compliant.
27
286.41 Sat Sep 6 22:08:46 CEST 2014
29 - restore portability to perl 5.8.x.
30 - give new Coro's a valid GvHV(PL_hintgv) - this is slow and takes
31 up some memory, but fixes "use feature" and similar modules
32 when used inside a Coro.
33 - allow zero as argument to Coro::Channel to mean the same thing
34 as no argument. this works with older versions as well,
35 but wasn't legal until now.
36 - slightly better c header file detection.
37
386.39 Mon Jun 2 00:00:08 CEST 2014
39 - work around more incompatible changes in 5.20.
40
416.38 Sun Jun 1 21:54:23 CEST 2014
42 - check that perl slots actually have enough space to hold
43 interpreter variables.
44 - untested port to perl 5.19 (64 bit tmps indices) (reported
45 by Andreas König).
46 - croak when cancel is called without a thread context.
47
486.37 Tue Mar 4 13:27:33 CET 2014
49 - *sigh*, removed leftover debugging code from debugging a
50 perl bug, of all things.
51
526.36 Tue Mar 4 07:11:59 CET 2014
53 - semaphores would not clear the destroy hook when interrupted
54 by ->throw, causing segfaults or worse.
55 - ->throw on a thread waiting for a semaphore did not acquire
56 the semaphore, but also didn't wake up other waiters,
57 possibly causing a deadlock.
58 - "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
59 to report a full stacktrace, which should help find out
60 where the actual call is.
61 - "atomically" destroy data in slf_destroy, because it is
62 the right thing to do, just in case.
63 - disable ecb.h libm dependency, to compile on ancient systems
64 or under adverse conditions.
65
666.33 Mon Nov 18 11:26:27 CET 2013
67 - do not crash when freeing padlists with holes (in 5.18).
68 - tentative SVt_BIND 5.19 port/fix.
69
706.32 Tue Nov 5 15:35:35 CET 2013
71 - use a new algorithm to derive padlists for perl 5.18. The old
72 one could lead to 0-pointer accesses inside perl (reported
73 by Darin McBride).
74
756.31 Thu May 9 07:39:48 CEST 2013
76 - Coro::AIO requests would crash if the thread was ready'd
77 while the request was ongoing.
78
796.29 Wed May 8 02:55:18 CEST 2013
80 - when an on_destroy handler destructs the coro currently being
81 destructed a perl scalar could be accessed after being freed,
82 likely causing a crash.
83
846.28 Wed Mar 6 06:58:02 CET 2013
85 - clean remnants of existing __DIE__ and __WARN__ handlers so
86 they lose their magic and will not cause segfaults later
87 (testcase by Andrey Sagulin).
88 - improved Coro::State documentation a bit.
89 - Coro::Debug::command now flushes the output.
90 - add hack detection code for x32 abi, because the braindead slugs
91 who designed that made it look exactly like x86_64 without
92 providing proper compile time symbols to test for it. as a result,
93 this detection cannot work reliably.
94 - valgrind stack registering was broken.
95 - do not rely on Time::HiRes anymore in Coro::Debug.
96
976.23 Fri Dec 7 23:36:37 CET 2012
98 - use experimental fiber implementation on native windows
99 perls.
100 - use sizeof (void *) as multiplication factor for stack sizes,
101 to accomodate the totally braindamaged microsoft 64 bit "os".
102 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
103 activeperl 5.16 crashes when PerlIO_define_layer is called due
104 to some bug in the perl dll, strawberry perl at least passes
105 the testsuite.
106 - implement Coro::Handle->peeraddr/host/port, for slightly
107 improved compatibility with LWP.
108 - implement 5.17 compatibility by almost blindly applying a
109 good-looking patch by Father Chrysostomos.
110 - move stack management functions into libcoro 3.
111 - libcoro version 3 "released".
112 - support magic values as timed_io_once args.
113 - recommend AnyEvent 7+ or EV 4+, also require EV
114 version 4 or newer for Coro::EV.
115
1166.10 Tue Oct 9 01:14:27 CEST 2012
117 - updated ecb.h, it had a typo that caused it to not compile on many
118 big endian systems (reported by many people).
119 - disable memory fences in ecb.h to improve portability.
120
1216.09 Sat Oct 6 23:25:02 CEST 2012
122 - Coro::EV I/O watchers were not interruptible by exceptions
123 (Coro::State::throw) (testcase by sten).
124 - ->throw now puts threads into the ready queue, as this seems to
125 be expected by existing code, and code that doesn't cope with spurious
126 wakeups needs fixing anyway.
127 - use fd -1 in mmap.
128 - cast I32 to int in error message printf.
129 - warn about broken so-called "hardened" kernels.
130
1316.08 Fri Apr 13 12:05:47 CEST 2012
132 - be more aggressive about exiting like perl does - formerly,
133 exiting from the non-main thread would not execute END blocks.
134
1356.07 Fri Nov 11 21:21:48 CET 2011
136 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
137 - update ecb.h.
138
1396.06 Mon Aug 8 23:59:48 CEST 2011
140 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
141 backend, which is an order of magnitude slower. unfortunately, cygwins
142 pthread implementation isn't very complete either, so allocate the stack
143 twice just to be sure.
144 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
145 in its ithreaded perl - best recompile cygwin and use the 'w'indows
146 backend for much better performance. also disable ithreads for
147 even better performance...).
148
1496.05 Thu Aug 4 21:36:36 CEST 2011
150 - blush, condvar values would not be propagated from send to recv anymore
151 (reported by Chip Salzenberg).
152 - use exponential increase for the readline buffer length in
153 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
154
1556.04 Wed Aug 3 17:15:45 CEST 2011
156 - use even more efficient and more compatible condvars for
157 compatibility to AnyEvent 6.x :)
158 - more inconsequential ecb.h updates.
159
1606.03 Wed Aug 3 11:41:30 CEST 2011
161 - change how Coro patches AnyEvent condvars for compatibility to
162 AnyEvent 6.x.
163 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
164 hasn't been included.
165
1666.02 Wed Jul 13 04:35:19 CEST 2011
167 - "improve portability to Gentoo" - gentoo manages to put perl variables
168 in memory areas that are farther than 2gb apart, which the jit couldn't
169 handle and barfed. now it's just a bit slower on gentoo and similar
170 systems.
171
1726.01 Sun Jul 3 12:31:14 CEST 2011
173 - workarounds are good, but the test for whether pthreads are used
174 was not good. this one should be better.
175 - check differently whether gcc generates cfi instructions itself.
176
1776.0 Wed Jun 29 19:43:35 CEST 2011
178 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
179 destroyed and cleaned up automatically (e.g. async { schedule }).
180 - implement a JIT compiler for part of the thread switch code,
181 which gives a 50% speed improvement on threaded perls, and
182 about 4% on non-threaded perls (so threaded perls now finally
183 reach about half the speed of non-threaded perls).
184 - slightly modernise Coro::Intro, add section about rouse functions.
185 - avoid DEFSV and ERRSV, giving another 10% improvement
186 in thread switching.
187 - Coro::State->is_destroyed is now called is_zombie.
188 - implement a Coro->safe_cancel method that might fail, but
189 cancels in a "safer" way if it succeeds.
190 - add preliminary support for DEBUGGING perls.
191 - get rid of two hash-accesses when initialising a new Coro - this
192 speeds up coro creation by almost a factor of two.
193 - croak when a coro that is being cancelled tries to block
194 (e.g. while executing a guard block), instead of crashing or
195 deadlocking.
196 - use a more robust and also faster method to identify Coro::State
197 objects - speeds up everything a bit.
198 - implement Coro->cancel in XS for a 20% speed improvement, and to
199 be able to implement mutual cancellation.
200 - speed up context switches by a percent or two by more efficiently
201 allocating context stack entries.
202 - implement Coro->join and Coro->on_destroy in XS for a speedup and
203 a reduction in memory use.
204 - cancelling a coro while it itself is cancelling another coro is
205 now supported and working, instead of triggering an assertion.
206 - be a bit more crash-resistant when calling (buggy) on_destroy
207 callbacks (best effort).
208 - move on_destroy into the slf_frame, to allow extension slf
209 functions to have destructors.
210 - get rid if coro refcounting - simply crash in other interpreter
211 threads by nulling the pointers on clone.
212 - simplify warn/die hook handling when loading Coro - the convoluted
213 logic seems to be no longer neccessary.
214 - use libecb instead of our own home-grown gcc hacks.
215 - document alternatives to Coro::LWP. Please use them :)
216 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
217 sigaltstack. Really. wine suffers from it, erlang suffers from it,
218 and it's known since at least 2006.
219
2205.372 Wed Feb 23 06:14:30 CET 2011
221 - apparently mingw doesn't provide a working gettimeofday, try to
222 work around that by relying on Time::HiRes (indirectly brought to
223 my attention by Max Maischein).
224 - fix some portability issues when Time::HiRes was used.
225
2265.371 Mon Feb 21 14:36:08 CET 2011
227 - backport to windows process emulation code again.
228
2295.37 Sat Feb 19 07:49:44 CET 2011
230 - add a big "Coro thread life cycle" section to "man Coro".
231 - try a tentative workaround against the breakage that 5.13 has
232 introduced without depreciation period. sigh.
233 - no longer use Time::HiRes if gettimeofday is available, which
234 saves quite a lot of memory.
235
2365.36 Sun Feb 13 05:33:41 CET 2011
237 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
238 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
239 method call.
240 - undocument Coro::Timer::sleep and obsolete whole module.
241 - optimise Coro::Timer::timeout memory and cpu usage.
242 - slightly updated Coro::Intro for recent changes.
243 - do not initialise PL_dirty anymore.
244
2455.25 Thu Nov 11 01:08:39 CET 2010
246 - try a different approach on netbsd - netbsd 5 finally has marginally
247 working pthreads, but still broken ucontext/sigaltstack.
248 - openbsd 4.8 finally got their act together, Coro works out of the box
249 with asm, setjmp and pthreads (no change, just informational).
250
2515.24 Sat Oct 23 11:27:12 CEST 2010
252 - port to the EV 4.0 API.
253 - work around bugs in mingw32, making strawberry perl work
254 out of the box.
255 - correctly modify Coro::AIO function prototypes
256 so that they reflect the "no optional parameters" rule.
257 - "ported" libcoro to C++.
258
2595.23 Mon May 17 18:50:42 CEST 2010
260 - be more resistant to ordering changes when initialising
261 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
262 Waldorf).
263 - document that perl 5.12 deliberately removed support for cloning.
264
2655.22 Wed Apr 14 03:55:35 CEST 2010
266 - correctly return udnef on errors in Coro::Handle::read/write
267 (testcase by Marc Mims).
268 - convert Coro::Util into a "perl compatibility wrapper" - the functions
269 are less useful now, but are drop-in replacements for existing
270 functions, listing better alternatives in the documentation. This also
271 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
272 with Coro::Util::inet_aton.
273 - do not override $Coro::idle unconditionally in Coro.pm, as other
274 modules could have provided their own idle coro already
275 (for exmaple, Coro::AnyEvent).
276 - fix Coro::Util::gethost* functions.
277 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
278
2795.21 Wed Dec 16 07:19:51 CET 2009
280 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
281 together.
282 - add some examples on how to combine other event loops with Coro in
283 Coro::AnyEvent, and how to run it (and not to block). Seems to be
284 the most common source of confusion.
285 - try to catch people naively blocking in an event callback.
286 - work around the perl filehandle bug issue in conjunction with
287 older common::sense (as indirectly pointed out by ZSystem).
288 - clarify the "not from signal handlers" section.
289
2905.2 Sun Oct 4 14:54:24 CEST 2009
291 - Coro::Storable destroyed the prototypes of the functions it wrapped.
292 - export rouse_cb and rouse_wait by default now.
293 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
294 - new method $state->swap_sv.
295 - added section on "windows process emulation" to the manpage,
296 after a not-so-fruitful (nor-friendly) "discussion" with chip
297 salzenberg (discussion implies arguments, but his only arguments
298 were ad-hominems, one wonders why he started it in the first
299 place). I hope this explains it well enough for him to understand,
300 and maybe well enough for others to understand.
301 - use common::sense everywhere now.
302 - idle callbacks are no longer supported, use idle coros instead.
303 - print a thread listing when a deadlock is detected.
304
3055.17 Sat Aug 22 23:09:31 CEST 2009
306 - work around a bug in the perl debugger causing crashes
307 when running under the debugger by marking _pool_handler as nodebug.
308 - speed up Coro::async considerably.
309 - try some hacks to get netbsd to work "more often" - their broken
310 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
311 - convert Coro to AE 5.0 API.
312
3135.162 Tue Jul 28 04:04:03 CEST 2009
314 - perl 5.8.2 is now minimum requirement.
315 - skip t/19_handle.t on broken windows perls.
316
3175.161 Wed Jul 22 04:47:38 CEST 2009
318 - Coro::AnyEvent::poll could have a different prototype when EV was
319 used as backend (analyzed by Tatsuhiko Miyagawa).
320 - Coro::AnyEvent errornously initialised the event loop when loaded,
321 not on demand.
322 - try to workaround rare */t/01_unblock.t failures.
323
3245.16 Tue Jul 21 01:44:37 CEST 2009
325 - Coro::AnyEvent failed to hook into the event loop
326 when no threads had been readied between detecting
327 the event loop and actually running it.
328 - considerably speed up Coro::Select by taking avdantage
329 of AnyEvent > 4.8 and some other optimisations.
330 - implement paragraph readline mode in Coro::Handle
331 (based on patches by Zsbán Ambrus).
332 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
333 and analyzed by Yasuhiro MATSUMOTO).
334 - clarified libcoro license and copyright.
335 - someone stole my EXTRA_META!!!
336 - implement Coro::Select::patch_pp_sselect and it's brother,
337 for hardcode select overriding.
338
3395.151 Mon Jul 6 05:41:57 CEST 2009
340 - backport to windows process emulation code again (patch by
341 Yasuhiro MATSUMOTO).
342 - slightly update Coro::MakeMaker.
343
3445.15 Tue Jun 30 10:28:06 CEST 2009
345 - deprecate Coro::Socket, document how to get ipv6 support via
346 AnyEvent::Socket instead.
347 - implement signal->wait ($cb) interface, similar to semaphores.
348 - work around SvOK not supporting getmagic, so we have to getmagic
349 to test for undef :/ (reported by Matthias Waldorf).
350 - load Coro::AnyEvent in all modules using AnyEvent.
351 - work around perl corrupting our internal data structures,
352 reported by Tokuhiro Matsuno.
353 - enable per-coroutine real and cpu time gathering
354 (Coro::State::enable_times).
355
3565.14 Wed Jun 24 01:37:48 CEST 2009
357 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
358 as this seems to have been a difficult concept (poll, sleep, idle,
359 idle_upto).
360 - add Coro::AnyEvent::readable/writable functions.
361 - clarify Coro::EV/Event/AnyEvent manpages.
362 - free per-thread global scalars in the thread calling ->cancel, to
363 avoid crashes when $_, $@ etc., are magical but some of those
364 had already been freed.
365 - "unexperimentalise" the callback interface for Coro::Semaphore.
366 - speed up ready queue management/context switching by using a linked
367 list instead of an array (~5-10%).
368 - implement "watch" command in Coro::Debug shells.
369 - for fun, implement time-slicing as an example in the manpage.
370 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
371 Coro::Event, use the normal AnyEvent handling instead of dieing
372 (the same is true for Coro::Handle).
373 - properly document Coro::EV::timed_io_once.
374 - avoid unneccessary ->cancel calls in Coro::Handle.
375 - maybe make it work on mingw32 with win32 backend
376 (based on patch by Yasuhiro Matsumoto).
377
3785.132 Fri May 29 09:00:39 CEST 2009
379 - do not keep a reference to the argument itself in
380 Coro::Semaphore::guard, as it could change later.
381 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
382 should support a prepare callback.
383
3845.131 Mon Mar 16 23:20:37 CET 2009
385 - implement and document Coro->suspend, Coro->resume.
386 - fix Coro::Select implementation to not (often) close
387 the passed file descriptors (testcase provided by pippijn).
388
3895.13 Mon Dec 15 21:51:42 CET 2008
390 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
391 - don't set diehook to C<undef> but instead to NULL, to avoid
392 spurious warnings.
393 - fix a lot of bugs in Coro::SemaphoreSet.
394 - Coro::SemaphoreSet will less often create a semaphore needlessly.
395 - add Coro::SemaphoreSet::count and wait methods.
396 - take advantage of the new Guard module.
397 - deprecate Coro::guard.
398 - try to fix the dreaded 01_unblock tests once more. I hate it when
399 testsuites need more fixing than the code they are supposed to test.
400 - croak in more cases when a required callback isn't resolvable.
401 - fix some minor issues in Coro::State->call/eval.
402 - use current coroutine context instead of a temporary one
403 when temporarily switching to another coroutine.
404 - do not call C-level on_destroy handlers during global destruction,
405 to avoid needless segfaults.
406
4075.12 Sun Dec 7 13:30:38 CET 2008
408 - add default config for MirOS, which seems to be a bug-to-bug
409 compatible fork of openbsd ("world domination by releasing
410 openbsd cvs before the openbsd folks do it" or so :).
411 - free_padlist did destroy the names pad, not good, but didn't
412 seem to bother perl - this could fix issues such as eval ""
413 inside a function called from multiple coroutines.
414 - use a different method to detect destruction time.
415 - be more careful when freeing padlists just before global
416 destruction.
417 - fixed and expanded the call/cc example.
418 - renamed _terminate to _coro_run.
419 - new method Coro::Channel->shutdown.
420 - try pthreads on openbsd <4.4 (broken sigaltstack, will
421 pthreads fare better?).
422 - be less picky about destroying "a" running coroutine.
423
4245.11 Tue Nov 25 21:49:05 CET 2008
425 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
426 working code with failed assertions, introducing more bugs than
427 it fixes, requiring elaborate workarounds :(
428
4295.1 Mon Nov 24 08:54:59 CET 2008
430 - wrote a small introductory tutorial - Coro::Intro.
431 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
432 - Coro::Select did errornously dup the file descriptors
433 and didn't work with all AnyEvent backends.
434 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
435 LWP data transfers.
436 - disassociate c contexts from coro objects - this is agruably more
437 correct, but mostly allows sharing of cctxs between coro and state
438 objects, for added memory savings and speed increases.
439 - bumped $Coro::POOL_RSS up to 32kb by default.
440 - no longer set the optype to OP_CUSTOM, as B::* understandably
441 doesn't like this very much (and we *are* a type of entersub).
442 - implement state cloning, just to prove that call/cc can be done.
443 - automatically load Coro::AnyEvent in Coro::Handle.
444 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
445 do not have this method (and don't need it either).
446 - speed up generic anyevent methods in Coro::Handle by using rouse
447 callbacks.
448 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
449 others. It also makes the debugger happier, as you can trace
450 through the idle threads now.
451 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
452 - eg/event was pretty broken.
453 - better 5.8.6 compatibility.
454
4555.0 Thu Nov 20 10:35:05 CET 2008
456 - NEW ARCHITECTURE: use the latest 4.x version if you experience
457 stability issues.
458 - bump API version to 7 - all dependents must be recompiled.
459 - removed timed_* functions - they were not being used anyways
460 and should be replaced by a more generic mechanism -
461 and were annoying to support anyways :)
462 - removed SemaphoreSet's waiter method - use sem method instead.
463 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
464 - async_pool did free a scalar value twice
465 ("Attempt to unreference...").
466 - fix a longstanding bug where calling terminate on a coro that
467 was waiting for a semaphore that was just becoming available
468 would cause a deadlock (semaphore would get into a state where
469 it was available but waiters were still blocked).
470 - calling throw on a coroutine that is waiting for a semaphore will
471 no longer make it acquire the semaphore (and thus leak a count).
472 - perl's process emulation is now not even theoretically supported
473 anymore.
474 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
475 conversion of callback-style to blocking-style.
476 - new methods $coro->schedule_to and ->cede_to, to specifically
477 schedule or cede to a specific coroutine.
478 - new function Coro::Semaphore::wait.
479 - use named constants in Coro::Channel (Richard Hundt).
480 - directly patch the entersub opcode calling SLF functions (cede,
481 transfer and so on). this does speed up context switching, but
482 more importanly, it frees us from the hardcoded behaviour of
483 entersub, so we might actually be able to return something from
484 those functions and atcually create new ones.
485 - take advantage of __builtin_frame_address on gcc.
486 - expose THX in coroapi (not sure whether this was a wise decision,
487 as "threaded" perls are running at half speed anyways).
488 - implement execute_slf (schedule-like-function) interface that makes
489 it possible to implement schedule-like-functions in XS.
490 - use new SLF interface to massively speed up Coro::EV by roughly a
491 factor of two.
492 - used new SLF interface to massively speed up Coro::Semaphore by a
493 factor of three.
494 - used new SLF interface to speed up Coro::AIO by roughly a factor of
495 four and reduce its memory usage considerably.
496 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
497 for a nice speedup and vastly more correct behaviour. Also implement
498 a new method "sem" to get at the underlying semaphore object.
499 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
500 (in comparison) 20-40% speedup.
501 - used new SLF interface to reimplement Coro::Signal gaining
502 some unknown (because I was too lazy), but certain, speedup, and also
503 making signals reliable for the first time.
504 - used new SLF interface and other optimisations to speed up async_pool
505 by a factor of two. It also doesn't rely on perl's exception mechanism
506 to exit anymore. The overhead for terminating an async_pool, coro over
507 a normal async is now very small.
508 - sped up coroutine creation/destruction by 40%.
509 - forgot to include Coro/libcoro/README in the dist for all these years.
510 - work around a freebsd pthreads bug (manual testcancel is required as
511 pthread_cond_wait isn't a cancellation point on freebsd).
512 - use new rouse functions to speed up and simplify Coro::BDB.
513 - make "prefer perl native functions" work with threaded perls.
514 - condense Coro::Debug ps output, hint at v and w flags.
515 - (libcoro) lots of minor cleanups and portability improvements.
516
5174.914 Wed Nov 19 12:54:18 CET 2008
518 - fix a disastrous bug in the readline optimisation
519 introduced in 4.801.
520
5214.913 Sat Nov 15 07:58:28 CET 2008
522 - async_pool did free a scalar value twice
523 ("Attempt to unreference...").
524
5254.912 Thu Nov 13 18:31:23 CET 2008
526 - minor cleanups.
527 - use much larger stacks on linux and perl < 5.8.8.
528 - Coro::Debug::new_unix_server did not unlink the socket
529 when destroyed.
530
5314.911 Tue Nov 11 04:26:17 CET 2008
532 - "port" to threaded perls.
533
5344.91 Mon Nov 10 05:36:38 CET 2008
535 - the ->throw exception object no longer leaks.
536 - creating a new cctx leaked a scopestack entry (memleak).
537 - new coroutines didn't get created with a zero flags field
538 (unknown impact).
539 - calling ->throw on a not-yet-started coroutine should now work
540 instead of being ignored.
541 - ->throw is now supported on Coro::State objects.
542 - clean up cctx creation code a bit.
543 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
544
5454.9 Sat Nov 8 17:45:27 CET 2008
546 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
547 - (libcoro) no longer leak threads in the experimental pthread backend,
548 also speed it up considerably.
549 - (libcoro) do not rely on makecontext passing void *'s unscathed.
550 - fix compiletime dependencies on libcoro in the Makefile.
551 - cctx_count wasn't always updated properly.
552 - Coro::State::cctx_stacksize wasn't applied correctly.
553 - new function Coro::State::cctx_max_idle.
554 - the default max number of idle C contexts is now 4.
555 - (libcoro) try harder to get _setjmp/_longjmp.
556 - (libcoro) cleanup and extend the libcoro API to officially
557 allow the creation of empty source contexts.
558 - very experimental workaround for the totally broken netbsd platform.
559 - tried to hack around openbsd bugs.
560
5614.804 Wed Nov 5 16:36:00 CET 2008
562 - Coro::Debug::new_unix_server would not create a non-blocking listening
563 socket, sometimes causing freezes.
564 - (libcoro) fix misaligned stack points for setjmp and assembly
565 methods, which can cause crashes on x86/x86_64 with a sufficiently
566 aggressive compiler.
567 - new function: Coro::Debug::new_tcp_server.
568 - move ->throw into the Coro class because it only works on coro objects.
569
5704.803 Mon Nov 3 17:16:12 CET 2008
571 - (libcoro) use a global asm statement to become independent of gcc
572 otpimisations for CORO_ASM (thanks to pippijn for the idea).
573 - try to workaround yet another broken bsd, this time dragonfly.
574
5754.802 Thu Oct 30 10:56:12 CET 2008
576 - support -fno-omit-frame-pointer on x86 with the assembly method.
577 - tune 01_unblock.t tests a bit.
578
5794.801 Wed Oct 22 18:33:37 CEST 2008
580 - improve readline speed for very long "lines".
581 - backport to 5.8.8.
582
5834.8 Thu Oct 2 13:34:40 CEST 2008
584 - new function Coro::AIO::aio_wait.
585 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
586 - greatly speed up and reduce memory usage of Coro::AIO requests.
587 - implement some other µ-optimisations.
588
5894.749 Mon Sep 29 14:40:12 CEST 2008
590 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
591
5924.748 Sat Sep 27 14:03:19 CEST 2008
593 - implement, but do not document, PerlIO::cede(granularity).
594 - Coro::Storable forgot to wrap Storable::pstore.
595 - work around the multitude of leaks and memory corruption
596 bugs in PerlIO::via by using our own C-level perliol. As a side
597 effect, Coro::Storable is now much, much, much faster.
598
5994.747 Tue Sep 23 01:59:41 CEST 2008
600 - fix a per-cv memleak (one empty array was leaked per
601 code reference).
602 - avoid a crash in coro->call|rss when the coroutine was already
603 destroyed (most noticably when using Coro::Debug::ps :)
604 - also protect *Storable::FILE.
605 - push up default storable granularity to 20ms.
606
6074.746 Sun Sep 21 03:22:20 CEST 2008
608 - be more insistent on locking Storable against reentrancy
609 in Coro::Storable.
610 - move swap_def?v and throw to Coro::State, as documented.
611
6124.745 Thu Jul 24 00:14:38 CEST 2008
613 - remove debugging code related to MgPV_nolen_const, also try to
614 make it compile with perl 5.8.6 (yes, apple apparently loves
615 outdated software). Reported by John S.
616
6174.744 Tue Jul 8 22:06:35 CEST 2008
618 - correctly provide default DIE/WARN handlers as documented.
619 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
620 implementations inside perl work fine for us.
621
6224.743 Mon Jun 16 00:21:57 CEST 2008
623 - when using Coro::EV without running EV::loop it could
624 result in busy-waiting for events, this has been fixed.
625 - reduce codesize and improve performance by using EV_DEFAULT_UC.
626
6274.742 Sat May 31 14:10:21 CEST 2008
628 - implement a workaround for (some) perl <5.8.8 versions.
629 - require EV 3.3+.
630
6314.741 Fri May 30 23:33:09 CEST 2008
632 - tell netbsd how utterly broken their imitation of an OS is
633 and refuse to build by default if pthreads are in use.
634 - switch to "s" method on all bsd's by default, as their ucontext
635 stuff seems just too broken.
636 - fix a bug in Coro::Select.
637
6384.74 Thu May 29 20:05:31 CEST 2008
639 - do not test Coro::LWP for lack of dependencies.
640 - do not test Coro::Select for lack of working perls.
641
6424.73 Thu May 29 2008
643 - fix a bug in Coro::EV which would cause it to block despite
644 there being runnable coroutines.
645 - sprinkle "no warnings" freely over everything, also suppress
646 warnings for some other modules.
647 - fix typo in WSAEWOULDBLOCK.
648
6494.72 Sun May 25 05:14:36 CEST 2008
650 - tweak META.yaml a bit, unfortunately, there is no documented way
651 to have optional dependencies with CPAN. doh :(
652 - avoid running some tests on windows because they would fail due to
653 perl bug (broken fork, broken pipes...).
654 - work around perl on windows bugs where perl returns undocumented
655 error codes for sysread, syswrite etc. by taking advantage
656 of AnyEvent's workaround for that problem.
657 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
658 a common perl implementation bug on windows.
659 - use unix domain sockets in testsuite to work around
660 common perl implementation bugs on widows (they are emulated by
661 tcp sockets on windows. ugh.)
662
6634.71 Sat May 24 20:01:27 CEST 2008
664 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
665 - take advantage of async name resolution of AnyEvent::Util.
666 - work around brutal inet_aton override in Coro::LWP.
667 - take advantage of the readyhook in Coro::EV, for smoother
668 scheduling.
669
6704.7 Sun May 11 00:32:19 CEST 2008
671 - completely reworked the Coro manpage.
672 - added Coro::AnyEvent, generic event loop integration.
673 - implement cancel, ready and kill commands in Coro::Debug.
674 - document find_coro in Coro::Debug.
675 - incompatible change: rename has_stack to has_cctx.
676 - Coro::AIO and Coro::BDB no longer force event model detection,
677 use AnyEvent::AIO and AnyEvent::BDB.
678
6794.6 Sat Apr 26 10:05:14 CEST 2008
680 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
681 by the Coro module. It was a mistake to have it in the first place.
682 - (experimental) support for activestate perl 5.10 (method "w").
683 - (experimental) support for strawberry perl (method "a").
684 - coro_sigelem_set did not return a value although it had to,
685 actual impact unknown.
686
6874.51 Mon Apr 14 13:28:27 CEST 2008
688 - make it compile again on 5.8.
689
6904.50 Thu Apr 10 09:43:17 CEST 2008
691 - I did it twice! (see 4.49).
692
6934.49 Sun Apr 6 21:23:31 CEST 2008
694 - grr, instead of compiling the recent changes on 5.10 only they
695 were compiled on 5.8 only.
696
6974.48 Sun Apr 6 20:36:46 CEST 2008
698 - allow coroutine switches during eval's under 5.10.x, as it seems
699 the parser is a per-interpreter option now, so this is safe
700 (this might fix the odd crashing bug).
701 - drop support for 5.9.x versions: they are dead, jim.
702
7034.47 Sun Apr 6 00:37:52 CEST 2008
704 - force cctx allocation on API calls: we know we need to force one
705 and gcc actually manages to confuse our heuristic nowadays,
706 leading to crashes and worse.
707 - document force_cctx.
708
7094.46 Fri Apr 4 22:05:43 CEST 2008
710 - upgrade libcoro, resulting in pthread-backend (which was only created
711 to fulfill the rules of the programming languages shootout).
712
7134.45 Thu Mar 13 11:55:36 CET 2008
714 - fix a file leaking bug in eg/mhyttpd that would allow
715 downloading of any file (reported by oesi).
716 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
717 (also add testcase).
718 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
719 apparently having loads of fun with that).
720 - implement $state->swap_defsv, ->swap_defav and document ->throw.
721
7224.4 Wed Feb 13 16:44:29 CET 2008
723 - only assume .cfi pseudo isns exist on GNU/Linux.
724 - add get_timed method to Coro::Channels.
725 - fixed Coro::Debug manpage.
726 - perl 5.11 compatbility improvement based on patch by
727 Andreas König.
728
7294.37 Sun Jan 20 11:25:23 CET 2008
730 - soften the check for an active parser for perl 5.10 (avoiding
731 "Coro::State::transfer called while parsing" in many cases).
732
7334.36 Sun Jan 13 10:53:56 CET 2008
734 - reset diehook when terminating from an async_pool as to not
735 trigger any __DIE__ handlers.
736
7374.35 Sun Jan 13 04:14:13 CET 2008
738 - "bt" debug command now displays any exceptions
739 from longmess and also skips the innermost
740 stackframes, giving more useufl output.
741 - allow backtraces in coroutines blocked in Coro::EV,
742 at a <1% speed hit.
743 - handle localising of $SIG{__WARN__} and __DIE__
744 properly (with a proper amount of dirty hacking).
745
7464.34 Sat Dec 22 17:49:53 CET 2007
747 - upgrade to EV version 2.0 API.
748
7494.33 Mon Dec 17 08:36:12 CET 2007
750 - make Coro::AIO etc. loadable in the absence of EV.
751
7524.32 Mon Dec 17 07:46:02 CET 2007
753 - majorly improved Coro::Handle's performance with Coro::EV.
754 - implemented the until now mythical Coro::BDB module.
755 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
756
7574.31 Wed Dec 5 12:32:39 CET 2007
758 - remove warn statement form Coro::Util.
759
7604.3 Tue Dec 4 20:33:14 CET 2007
761 - calls to the idle function could cause stack corruption
762 when the stack changed.
763 - do no longer rely on the presence of EV::DNS if EV is used
764 (because it is gone), but instead take avdantage of EV::ADNS
765 if available.
766 - add ($) prototypes to all functions in Coro::Storable.
767 - use a conventional (safer) idle callback in Coro::EV.
768 - do accept quickly in Coro::Debug to avoid endless loops.
769
7704.22 Fri Nov 30 16:04:04 CET 2007
771 - really use optimised versions for Event and EV in Coro::Util
772 and Coro::Handle.
773
7744.21 Sun Nov 25 10:48:59 CET 2007
775 - fix a spurious memory read.
776 - Coro::EV no longer keeps the eventloop "alive".
777
7784.2 Fri Nov 9 20:47:05 CET 2007
779 - enable/disable tracing from a new coroutine, not a pooled one.
780 - fix a memleak in Coro::Event.
781 - removed killall call from fork_eval.
782 - made sure store_fd is already loaded so that fork_eval
783 does not have to parse autoload in each subprocess.
784 - only use assembly method if -O switch is in $Config{optimize}.
785 - add (optional) Coro::EV module, so far the best event loop module
786 directly supported by Coro.
787 - if the event model is EV, use EV::DNS to resolve
788 stuff in Coro::Util.
789 - don't get confused by multiple event notifications in Coro::Handle.
790 - initial support for EV (libevent interface).
791 - require Event and EV using configure_requires, to force their existance.
792
7934.13 Wed Oct 24 07:26:45 CEST 2007
794 - add Coro::Storable::blocking_thaw.
795 - use a vastly more complicated technique to localise
796 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
797 - use a coroutine for the idle callback Coro::Event,
798 instead of running Event in the current coroutine context.
799 This also catches recursive invocations.
800 - actually report fork errors in gethostbyname and inet_aton.
801
8024.11 Thu Oct 11 02:40:24 CEST 2007
803 - port to threaded perls.
804
8054.1 Thu Oct 11 02:38:16 CEST 2007
806 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
807 be local to each coro (see Coro::State).
808 - incompatible change: for very deep reasons, cede and cede_notself
809 cannot return anything, so nothing will be returned.
810 - possibly bring back 5.10 compatibility (untested).
811 - work around stupid (and wrong) warning on 5.10 :(.
812 - overlay the saved state over the context stack. This saves
813 a few hundred bytes per coroutine on average and also
814 speeds up context switching a bit.
815 - further tune default stack sizes.
816 - (more) correctly calculate stack usage in coro_rss.
817 - Coro::Storable::blocking_* did not properly lock
818 resulting in races between coroutines.
819 - added Coro::Storable::guard.
820 - stopping to trace a coroutine could destroy the cctx of
821 an unrelated coroutine.
822 - explain the relationship between Perl and C coroutines in
823 more detail in Coro::State.
824 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
825 causing a fork per resolve. This also affected Coro::Socket.
826 - switch to a separate stack in $coro->call/eval to avoid
827 invalidating pointers.
828
8294.03 Sat Oct 6 21:24:00 CEST 2007
830 - added Coro::throw method.
831 - minor code cleanups.
832
8334.02 Sat Oct 6 02:36:47 CEST 2007
834 - fix a very minor per-coroutine memleak (a single codereference).
835 - fixed a bug where the currently in-use c context would be freed
836 prematurely (can happen only when programs change the stacksize
837 or use tracing).
838 - tracing can no longer keep a coro alive after it terminated.
839 - do static branch prediction in the common path for gcc. gives
840 about 2-5% speed improvement here.
841
8424.01 Fri Oct 5 22:10:49 CEST 2007
843 - instead of recreating *a* standard output handle we simply
844 use STDOUT, which is faster and hopefully more robust.
845
8464.0 Fri Oct 5 12:56:00 CEST 2007
847 - incompatibly changed Coro::Storable::freeze.
848 - major new feature: added Coro::Debug, for interactive coroutine
849 debugging, tracing and much more.
850 - major bug fix: unbelievable, but true: $_, $/ and many other
851 "saved" variables actually weren't being saved. This has been fixed,
852 of course, while increasing performance while losing all the save
853 flags.
854 - save flags are gone, and all the api functions dealing with them.
855 - added Coro::Semaphore::adjust.
856 - added Coro::Util::fork_eval.
857 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
858 - added Coro::killall.
859 - reduce initial stack sizes to allow for "micro-coroutines".
860 - better async_pool resource management, moved parts of async_pool
861 handling to XS (major speed improvement).
862 - actually croak before modifying important data structures.
863 - refuse to transfer while compiling.
864 - possibly support eval EXPR better now.
865 - enable assembly per default on linux+bsd x86+amd64.
866 - all internal members were renamed _something for easier subclassing.
867 - many minor tweaks.
868
8693.63 Wed May 16 14:10:06 CEST 2007
870 - implement handcoded assembly for x86/amd64 SVR ABI.
871
8723.62 Fri Apr 27 21:36:06 CEST 2007
873 - upgrade libcoro (which might set unwind info correctly).
874 - change default on linux to setjmp/longjmp.
875
8763.61 Thu Apr 19 12:36:18 CEST 2007
877 - Coro::Storable caused an endless loop when thawing invalid
878 pst's sometimes.
879 - use a Semaphore in Coro::Storable, as Storable doesn't
880 seem to be reentrant (although it is documented to
881 be threadsafe...).
882 - fix Coro::Signal to bring back the original unreliable
883 but stateful semantics.
884 - fixed a lot of typos in Coro.pm (patch submitted by David
885 Steinbrunner, which applied flawlessly).
886
8873.6 Sat Apr 14 17:13:31 CEST 2007
888 - added some bugfixes to get eg/myhttpd working again.
889 - added Coro::Storable for often-cede'ing freeze/thaw.
890 - try to do a clean exit when a coroutine calls exit
891 (EXPERIMENTAL).
892 - got rid of indirect call through _coro_init.
893 - updated the partly antique examples in eg/ to
894 work again and be a bit less magic, too.
895 - fixed Coro::Signal semantics to work as documented again.
896
8973.55 Sun Mar 25 01:20:47 CET 2007
898 - add SAVE_DEFFH to save the default filehandle and enable
899 it by default.
900 - finally move socket-operations from Coro::Socket to Coro::Handle
901 to be able to unblock foreign sockets.
902 - add Coro::State::save_also and guarded_save.
903 - add count accessor to Coro::Semaphore.
904 - add Coro::State::cctx_stacksize.
905 - just for the fun of it, do not rely on implicit context,
906 which can dramatically improve performance, but people
907 using windows-process-emulation perls do not care much about
908 performance.
909
9103.51 Sun Mar 4 14:18:04 CET 2007
911 - fixed a problem when you weakened references to Coro::State's
912 (patch by Yuval Kogman).
913
9143.501 Wed Feb 28 12:44:07 CET 2007
915 - rename some global symbols as macosx from hell redefines
916 them without asking.
917
9183.5 Tue Feb 13 20:22:53 CET 2007
919 - do AnyEvent model detection earlier, avoiding problems
920 caused by first using AnyEvent and later Coro::Event.
921 - implement and document Coro::Event event objects.
922 - fix a potential problem in Coro::Event causing crashes.
923 - initialise PL_comppad when creating a new coroutine,
924 avoids crashes on early coro destruction.
925
9263.41 Mon Jan 22 19:19:49 CET 2007
8 - readline on Coro::Handle did not support undefined $/, 927 - readline on Coro::Handle did not support undefined $/,
9 nor did it deliver partial lines on EOF or error. 928 nor did it deliver partial lines on EOF or error.
929 - implement malloc fallback for stack allocation because
930 stupid broken idiotic OSX has a stupid broken
931 idiotic fits-the-whole-os mmap "implementation" and
932 my dick feels longer if Coro is portable even to
933 obsolete platforms.
10 934
113.4 Fri Jan 19 21:52:54 CET 2007 9353.4 Fri Jan 19 21:52:54 CET 2007
12 - remove t/09_timer.t, as it isn't really testing much 936 - remove t/09_timer.t, as it isn't really testing much
13 but was rather flaky in practise. 937 but was rather flaky in practise.
14 - async_pool coro would keep arguments and callback alive until 938 - async_pool coro would keep arguments and callback alive until

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