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Comparing Coro/Changes (file contents):
Revision 1.145 by root, Tue Nov 7 11:24:18 2006 UTC vs.
Revision 1.604 by root, Fri Dec 7 14:21:09 2012 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2
3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: channel->maxsize(newsize)?
5TODO: http://www.microsoft.com/msj/archive/s2ce.aspx
6TODO: __GCC_HAVE_DWARF2_CFI_ASM
7
8TODO: add peerhost/peerport from IO::Socket::INET etc.
9
10 - use experimental fiber implementation on native windows
11 perls.
12 - use sizeof (void *) as multiplication factor for stack sizes,
13 to accomodate the totally braindamaged microsoft 64 bit "os".
14 - implement 5.17 compatibility by almost blindly applying a
15 good-looking patch by Father Chrysostomos.
16 - move stack management functions into libcoro 3.
17 - support magic values as timed_io_once args.
18 - recommend AnyEvent 7+ or EV 4+, also require EV
19 version 4 or newer for Coro::EV.
20
216.10 Tue Oct 9 01:14:27 CEST 2012
22 - updated ecb.h, it had a typo that caused it to not compile on many
23 big endian systems (reported by many people).
24 - disable memory fences in ecb.h to improve portability.
25
266.09 Sat Oct 6 23:25:02 CEST 2012
27 - Coro::EV I/O watchers were not interruptible by exceptions
28 (Coro::State::throw) (testcase by sten).
29 - ->throw now puts threads into the ready queue, as this seems to
30 be expected by existing code, and code that doesn't cope with spurious
31 wakeups needs fixing anyway.
32 - use fd -1 in mmap.
33 - cast I32 to int in error message printf.
34 - warn about broken so-called "hardened" kernels.
35
366.08 Fri Apr 13 12:05:47 CEST 2012
37 - be more aggressive about exiting like perl does - formerly,
38 exiting from the non-main thread would not execute END blocks.
39
406.07 Fri Nov 11 21:21:48 CET 2011
41 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
42 - update ecb.h.
43
446.06 Mon Aug 8 23:59:48 CEST 2011
45 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
46 backend, which is an order of magnitude slower. unfortunately, cygwins
47 pthread implementation isn't very complete either, so allocate the stack
48 twice just to be sure.
49 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
50 in its ithreaded perl - best recompile cygwin and use the 'w'indows
51 backend for much better performance. also disable ithreads for
52 even better performance...).
53
546.05 Thu Aug 4 21:36:36 CEST 2011
55 - blush, condvar values would not be propagated from send to recv anymore
56 (reported by Chip Salzenberg).
57 - use exponential increase for the readline buffer length in
58 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
59
606.04 Wed Aug 3 17:15:45 CEST 2011
61 - use even more efficient and more compatible condvars for
62 compatibility to AnyEvent 6.x :)
63 - more inconsequential ecb.h updates.
64
656.03 Wed Aug 3 11:41:30 CEST 2011
66 - change how Coro patches AnyEvent condvars for compatibility to
67 AnyEvent 6.x.
68 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
69 hasn't been included.
70
716.02 Wed Jul 13 04:35:19 CEST 2011
72 - "improve portability to Gentoo" - gentoo manages to put perl variables
73 in memory areas that are farther than 2gb apart, which the jit couldn't
74 handle and barfed. now it's just a bit slower on gentoo and similar
75 systems.
76
776.01 Sun Jul 3 12:31:14 CEST 2011
78 - workarounds are good, but the test for whether pthreads are used
79 was not good. thisone should be better.
80 - check differently whether gcc generates cfi instructions itself.
81
826.0 Wed Jun 29 19:43:35 CEST 2011
83 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
84 destroyed and cleaned up automatically (e.g. async { schedule }).
85 - implement a JIT compiler for part of the thread switch code,
86 which gives a 50% speed improvement on threaded perls, and
87 about 4% on non-thraeded perls (so threaded perls now finally
88 reach about half the speed of non-threaded perls).
89 - slightly modernise Coro::Intro, add section about rouse functions.
90 - avoid DEFSV and ERRSV, giving another 10% improvement
91 in thread switching.
92 - Coro::State->is_destroyed is now called is_zombie.
93 - implement a Coro->safe_cancel method that might fail, but
94 cancels in a "safer" way if it succeeds.
95 - add preliminary support for DEBUGGING perls.
96 - get rid of two hash-accesses when initialising a new Coro - this
97 speeds up coro creation by almost a factor of two.
98 - croak when a coro that is being cancelled tries to block
99 (e.g. while executing a guard block), instead of crashing or
100 deadlocking.
101 - use a more robust and also faster method to identify Coro::State
102 objects - speeds up everything a bit.
103 - implement Coro->cancel in XS for a 20% speed improvement, and to
104 be able to implement mutual cancellation.
105 - speed up context switches by a percent or two by more efficiently
106 allocating context stack entries.
107 - implement Coro->join and Coro->on_destroy in XS for a speedup and
108 a reduction in memory use.
109 - cancelling a coro while it itself is cancelling another coro is
110 now supported and working, instead of triggering an assertion.
111 - be a bit more crash-resistant when calling (buggy) on_destroy
112 callbacks (best effort).
113 - move on_destroy into the slf_frame, to allow extension slf
114 functions to have destructors.
115 - get rid if coro refcounting - simply crash in other interpreter
116 threads by nulling the pointers on clone.
117 - simplify warn/die hook handling when loading Coro - the convoluted
118 logic seems to be no longer neccessary.
119 - use libecb instead of our own home-grown gcc hacks.
120 - document alternatives to Coro::LWP. Please use them :)
121 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
122 sigaltstack. Really. wine suffers from it, erlang suffers from it,
123 and it's known since at least 2006.
124
1255.372 Wed Feb 23 06:14:30 CET 2011
126 - apparently mingw doesn't provide a working gettimeofday, try to
127 work around that by relying on Time::HiRes (indirectly brought to
128 my attention by Max Maischein).
129 - fix some portability issues when Time::HiRes was used.
130
1315.371 Mon Feb 21 14:36:08 CET 2011
132 - backport to windows process emulation code again.
133
1345.37 Sat Feb 19 07:49:44 CET 2011
135 - add a big "Coro thread life cycle" section to "man Coro".
136 - try a tentative workaround against the breakage that 5.13 has
137 introduced without depreciation period. sigh.
138 - no longer use Time::HiRes if gettimeofday is available, which
139 saves quite a lot of memory.
140
1415.36 Sun Feb 13 05:33:41 CET 2011
142 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
143 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
144 method call.
145 - undocument Coro::Timer::sleep and obsolete whole module.
146 - optimise Coro::Timer::timeout memory and cpu usage.
147 - slightly updated Coro::Intro for recent changes.
148 - do not initialise PL_dirty anymore.
149
1505.25 Thu Nov 11 01:08:39 CET 2010
151 - try a different approach on netbsd - netbsd 5 finally has marginally
152 working pthreads, but still broken ucontext/sigaltstack.
153 - openbsd 4.8 finally got their act together, Coro works out of the box
154 with asm, setjmp and pthreads (no change, just informational).
155
1565.24 Sat Oct 23 11:27:12 CEST 2010
157 - port to the EV 4.0 API.
158 - work around bugs in mingw32, making strawberry perl work
159 out of the box.
160 - correctly modify Coro::AIO function prototypes
161 so that they reflect the "no optional parameters" rule.
162 - "ported" libcoro to C++.
163
1645.23 Mon May 17 18:50:42 CEST 2010
165 - be more resistant to ordering changes when initialising
166 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
167 Waldorf).
168 - document that perl 5.12 deliberately removed support for cloning.
169
1705.22 Wed Apr 14 03:55:35 CEST 2010
171 - correctly return udnef on errors in Coro::Handle::read/write
172 (testcase by Marc Mims).
173 - convert Coro::Util into a "perl compatibility wrapper" - the functions
174 are less useful now, but are drop-in replacements for existing
175 functions, listing better alternatives in the documentation. This also
176 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
177 with Coro::Util::inet_aton.
178 - do not override $Coro::idle unconditionally in Coro.pm, as other
179 modules could have provided their own idle coro already
180 (for exmaple, Coro::AnyEvent).
181 - fix Coro::Util::gethost* functions.
182 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
183
1845.21 Wed Dec 16 07:19:51 CET 2009
185 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
186 together.
187 - add some examples on how to combine other event loops with Coro in
188 Coro::AnyEvent, and how to run it (and not to block). Seems to be
189 the most common source of confusion.
190 - try to catch people naively blocking in an event callback.
191 - work around the perl filehandle bug issue in conjunction with
192 older common::sense (as indirectly pointed out by ZSystem).
193 - clarify the "not from signal handlers" section.
194
1955.2 Sun Oct 4 14:54:24 CEST 2009
196 - Coro::Storable destroyed the prototypes of the functions it wrapped.
197 - export rouse_cb and rouse_wait by default now.
198 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
199 - new method $state->swap_sv.
200 - added section on "windows process emulation" to the manpage,
201 after a not-so-fruitful (nor-friendly) "discussion" with chip
202 salzenberg (discussion implies arguments, but his only arguments
203 were ad-hominems, one wonders why he started it in the first
204 place). I hope this explains it well enough for him to understand,
205 and maybe well enough for others to understand.
206 - use common::sense everywhere now.
207 - idle callbacks are no longer supported, use idle coros instead.
208 - print a thread listing when a deadlock is detected.
209
2105.17 Sat Aug 22 23:09:31 CEST 2009
211 - work around a bug in the perl debugger causing crashes
212 when running under the debugger by marking _pool_handler as nodebug.
213 - speed up Coro::async considerably.
214 - try some hacks to get netbsd to work "more often" - their broken
215 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
216 - convert Coro to AE 5.0 API.
217
2185.162 Tue Jul 28 04:04:03 CEST 2009
219 - perl 5.8.2 is now minimum requirement.
220 - skip t/19_handle.t on broken windows perls.
221
2225.161 Wed Jul 22 04:47:38 CEST 2009
223 - Coro::AnyEvent::poll could have a different prototype when EV was
224 used as backend (analyzed by Tatsuhiko Miyagawa).
225 - Coro::AnyEvent errornously initialised the event loop when loaded,
226 not on demand.
227 - try to workaround rare */t/01_unblock.t failures.
228
2295.16 Tue Jul 21 01:44:37 CEST 2009
230 - Coro::AnyEvent failed to hook into the event loop
231 when no threads had been readied between detecting
232 the event loop and actually running it.
233 - considerably speed up Coro::Select by taking avdantage
234 of AnyEvent > 4.8 and some other optimisations.
235 - implement paragraph readline mode in Coro::Handle
236 (based on patches by Zsbán Ambrus).
237 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
238 and analyzed by Yasuhiro MATSUMOTO).
239 - clarified libcoro license and copyright.
240 - someone stole my EXTRA_META!!!
241 - implement Coro::Select::patch_pp_sselect and it's brother,
242 for hardcode select overriding.
243
2445.151 Mon Jul 6 05:41:57 CEST 2009
245 - backport to windows process emulation code again (patch by
246 Yasuhiro MATSUMOTO).
247 - slightly update Coro::MakeMaker.
248
2495.15 Tue Jun 30 10:28:06 CEST 2009
250 - deprecate Coro::Socket, document how to get ipv6 support via
251 AnyEvent::Socket instead.
252 - implement signal->wait ($cb) interface, similar to semaphores.
253 - work around SvOK not supporting getmagic, so we have to getmagic
254 to test for undef :/ (reported by Matthias Waldorf).
255 - load Coro::AnyEvent in all modules using AnyEvent.
256 - work around perl corrupting our internal data structures,
257 reported by Tokuhiro Matsuno.
258 - enable per-coroutine real and cpu time gathering
259 (Coro::State::enable_times).
260
2615.14 Wed Jun 24 01:37:48 CEST 2009
262 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
263 as this seems to have been a difficult concept (poll, sleep, idle,
264 idle_upto).
265 - add Coro::AnyEvent::readable/writable functions.
266 - clarify Coro::EV/Event/AnyEvent manpages.
267 - free per-thread global scalars in the thread calling ->cancel, to
268 avoid crashes when $_, $@ etc., are magical but some of those
269 had already been freed.
270 - "unexperimentalise" the callback interface for Coro::Semaphore.
271 - speed up ready queue management/context switching by using a linked
272 list instead of an array (~5-10%).
273 - implement "watch" command in Coro::Debug shells.
274 - for fun, implement time-slicing as an example in the manpage.
275 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
276 Coro::Event, use the normal AnyEvent handling instead of dieing
277 (the same is true for Coro::Handle).
278 - properly document Coro::EV::timed_io_once.
279 - avoid unneccessary ->cancel calls in Coro::Handle.
280 - maybe make it work on mingw32 with win32 backend
281 (based on patch by Yasuhiro Matsumoto).
282
2835.132 Fri May 29 09:00:39 CEST 2009
284 - do not keep a reference to the argument itself in
285 Coro::Semaphore::guard, as it could change later.
286 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
287 should support a prepare callback.
288
2895.131 Mon Mar 16 23:20:37 CET 2009
290 - implement and document Coro->suspend, Coro->resume.
291 - fix Coro::Select implementation to not (often) close
292 the passed file descriptors (testcase provided by pippijn).
293
2945.13 Mon Dec 15 21:51:42 CET 2008
295 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
296 - don't set diehook to C<undef> but instead to NULL, to avoid
297 spurious warnings.
298 - fix a lot of bugs in Coro::SemaphoreSet.
299 - Coro::SemaphoreSet will less often create a semaphore needlessly.
300 - add Coro::SemaphoreSet::count and wait methods.
301 - take advantage of the new Guard module.
302 - deprecate Coro::guard.
303 - try to fix the dreaded 01_unblock tests once more. I hate it when
304 testsuites need more fixing than the code they are supposed to test.
305 - croak in more cases when a required callback isn't resolvable.
306 - fix some minor issues in Coro::State->call/eval.
307 - use current coroutine context instead of a temporary one
308 when temporarily switching to another coroutine.
309 - do not call C-level on_destroy handlers during global destruction,
310 to avoid needless segfaults.
311
3125.12 Sun Dec 7 13:30:38 CET 2008
313 - add default config for MirOS, which seems to be a bug-to-bug
314 compatible fork of openbsd ("world domination by releasing
315 openbsd cvs before the openbsd folks do it" or so :).
316 - free_padlist did destroy the names pad, not good, but didn't
317 seem to bother perl - this could fix issues such as eval ""
318 inside a function called from multiple coroutines.
319 - use a different method to detect destruction time.
320 - be more careful when freeing padlists just before global
321 destruction.
322 - fixed and expanded the call/cc example.
323 - renamed _terminate to _coro_run.
324 - new method Coro::Channel->shutdown.
325 - try pthreads on openbsd <4.4 (broken sigaltstack, will
326 pthreads fare better?).
327 - be less picky about destroying "a" running coroutine.
328
3295.11 Tue Nov 25 21:49:05 CET 2008
330 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
331 working code with failed assertions, introducing more bugs than
332 it fixes, requiring elaborate workarounds :(
333
3345.1 Mon Nov 24 08:54:59 CET 2008
335 - wrote a small introductory tutorial - Coro::Intro.
336 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
337 - Coro::Select did errornously dup the file descriptors
338 and didn't work with all AnyEvent backends.
339 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
340 LWP data transfers.
341 - disassociate c contexts from coro objects - this is agruably more
342 correct, but mostly allows sharing of cctxs between coro and state
343 objects, for added memory savings and speed increases.
344 - bumped $Coro::POOL_RSS up to 32kb by default.
345 - no longer set the optype to OP_CUSTOM, as B::* understandably
346 doesn't like this very much (and we *are* a type of entersub).
347 - implement state cloning, just to prove that call/cc can be done.
348 - automatically load Coro::AnyEvent in Coro::Handle.
349 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
350 do not have this method (and don't need it either).
351 - speed up generic anyevent methods in Coro::Handle by using rouse
352 callbacks.
353 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
354 others. It also makes the debugger happier, as you can trace
355 through the idle threads now.
356 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
357 - eg/event was pretty broken.
358 - better 5.8.6 compatibility.
359
3605.0 Thu Nov 20 10:35:05 CET 2008
361 - NEW ARCHITECTURE: use the latest 4.x version if you experience
362 stability issues.
363 - bump API version to 7 - all dependents must be recompiled.
364 - removed timed_* functions - they were not being used anyways
365 and should be replaced by a more generic mechanism -
366 and were annoying to support anyways :)
367 - removed SemaphoreSet's waiter method - use sem method instead.
368 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
369 - async_pool did free a scalar value twice
370 ("Attempt to unreference...").
371 - fix a longstanding bug where calling terminate on a coro that
372 was waiting for a semaphore that was just becoming available
373 would cause a deadlock (semaphore would get into a state where
374 it was available but waiters were still blocked).
375 - calling throw on a coroutine that is waiting for a semaphore will
376 no longer make it acquire the semaphore (and thus leak a count).
377 - perl's process emulation is now not even theoretically supported
378 anymore.
379 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
380 conversion of callback-style to blocking-style.
381 - new methods $coro->schedule_to and ->cede_to, to specifically
382 schedule or cede to a specific coroutine.
383 - new function Coro::Semaphore::wait.
384 - use named constants in Coro::Channel (Richard Hundt).
385 - directly patch the entersub opcode calling SLF functions (cede,
386 transfer and so on). this does speed up context switching, but
387 more importanly, it frees us from the hardcoded behaviour of
388 entersub, so we might actually be able to return something from
389 those functions and atcually create new ones.
390 - take advantage of __builtin_frame_address on gcc.
391 - expose THX in coroapi (not sure whether this was a wise decision,
392 as "threaded" perls are running at half speed anyways).
393 - implement execute_slf (schedule-like-function) interface that makes
394 it possible to implement schedule-like-functions in XS.
395 - use new SLF interface to massively speed up Coro::EV by roughly a
396 factor of two.
397 - used new SLF interface to massively speed up Coro::Semaphore by a
398 factor of three.
399 - used new SLF interface to speed up Coro::AIO by roughly a factor of
400 four and reduce its memory usage considerably.
401 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
402 for a nice speedup and vastly more correct behaviour. Also implement
403 a new method "sem" to get at the underlying semaphore object.
404 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
405 (in comparison) 20-40% speedup.
406 - used new SLF interface to reimplement Coro::Signal gaining
407 some unknown (because I was too lazy), but certain, speedup, and also
408 making signals reliable for the first time.
409 - used new SLF interface and other optimisations to speed up async_pool
410 by a factor of two. It also doesn't rely on perl's exception mechanism
411 to exit anymore. The overhead for terminating an async_pool, coro over
412 a normal async is now very small.
413 - sped up coroutine creation/destruction by 40%.
414 - forgot to include Coro/libcoro/README in the dist for all these years.
415 - work around a freebsd pthreads bug (manual testcancel is required as
416 pthread_cond_wait isn't a cancellation point on freebsd).
417 - use new rouse functions to speed up and simplify Coro::BDB.
418 - make "prefer perl native functions" work with threaded perls.
419 - condense Coro::Debug ps output, hint at v and w flags.
420 - (libcoro) lots of minor cleanups and portability improvements.
421
4224.914 Wed Nov 19 12:54:18 CET 2008
423 - fix a disastrous bug in the readline optimisation
424 introduced in 4.801.
425
4264.913 Sat Nov 15 07:58:28 CET 2008
427 - async_pool did free a scalar value twice
428 ("Attempt to unreference...").
429
4304.912 Thu Nov 13 18:31:23 CET 2008
431 - minor cleanups.
432 - use much larger stacks on linux and perl < 5.8.8.
433 - Coro::Debug::new_unix_server did not unlink the socket
434 when destroyed.
435
4364.911 Tue Nov 11 04:26:17 CET 2008
437 - "port" to threaded perls.
438
4394.91 Mon Nov 10 05:36:38 CET 2008
440 - the ->throw exception object no longer leaks.
441 - creating a new cctx leaked a scopestack entry (memleak).
442 - new coroutines didn't get created with a zero flags field
443 (unknown impact).
444 - calling ->throw on a not-yet-started coroutine should now work
445 instead of being ignored.
446 - ->throw is now supported on Coro::State objects.
447 - clean up cctx creation code a bit.
448 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
449
4504.9 Sat Nov 8 17:45:27 CET 2008
451 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
452 - (libcoro) no longer leak threads in the experimental pthread backend,
453 also speed it up considerably.
454 - (libcoro) do not rely on makecontext passing void *'s unscathed.
455 - fix compiletime dependencies on libcoro in the Makefile.
456 - cctx_count wasn't always updated properly.
457 - Coro::State::cctx_stacksize wasn't applied correctly.
458 - new function Coro::State::cctx_max_idle.
459 - the default max number of idle C contexts is now 4.
460 - (libcoro) try harder to get _setjmp/_longjmp.
461 - (libcoro) cleanup and extend the libcoro API to officially
462 allow the creation of empty source contexts.
463 - very experimental workaround for the totally broken netbsd platform.
464 - tried to hack around openbsd bugs.
465
4664.804 Wed Nov 5 16:36:00 CET 2008
467 - Coro::Debug::new_unix_server would not create a non-blocking listening
468 socket, sometimes causing freezes.
469 - (libcoro) fix misaligned stack points for setjmp and assembly
470 methods, which can cause crashes on x86/x86_64 with a sufficiently
471 aggressive compiler.
472 - new function: Coro::Debug::new_tcp_server.
473 - move ->throw into the Coro class because it only works on coro objects.
474
4754.803 Mon Nov 3 17:16:12 CET 2008
476 - (libcoro) use a global asm statement to become independent of gcc
477 otpimisations for CORO_ASM (thanks to pippijn for the idea).
478 - try to workaround yet another broken bsd, this time dragonfly.
479
4804.802 Thu Oct 30 10:56:12 CET 2008
481 - support -fno-omit-frame-pointer on x86 with the assembly method.
482 - tune 01_unblock.t tests a bit.
483
4844.801 Wed Oct 22 18:33:37 CEST 2008
485 - improve readline speed for very long "lines".
486 - backport to 5.8.8.
487
4884.8 Thu Oct 2 13:34:40 CEST 2008
489 - new function Coro::AIO::aio_wait.
490 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
491 - greatly speed up and reduce memory usage of Coro::AIO requests.
492 - implement some other µ-optimisations.
493
4944.749 Mon Sep 29 14:40:12 CEST 2008
495 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
496
4974.748 Sat Sep 27 14:03:19 CEST 2008
498 - implement, but do not document, PerlIO::cede(granularity).
499 - Coro::Storable forgot to wrap Storable::pstore.
500 - work around the multitude of leaks and memory corruption
501 bugs in PerlIO::via by using our own C-level perliol. As a side
502 effect, Coro::Storable is now much, much, much faster.
503
5044.747 Tue Sep 23 01:59:41 CEST 2008
505 - fix a per-cv memleak (one empty array was leaked per
506 code reference).
507 - avoid a crash in coro->call|rss when the coroutine was already
508 destroyed (most noticably when using Coro::Debug::ps :)
509 - also protect *Storable::FILE.
510 - push up default storable granularity to 20ms.
511
5124.746 Sun Sep 21 03:22:20 CEST 2008
513 - be more insistent on locking Storable against reentrancy
514 in Coro::Storable.
515 - move swap_def?v and throw to Coro::State, as documented.
516
5174.745 Thu Jul 24 00:14:38 CEST 2008
518 - remove debugging code related to MgPV_nolen_const, also try to
519 make it compile with perl 5.8.6 (yes, apple apparently loves
520 outdated software). Reported by John S.
521
5224.744 Tue Jul 8 22:06:35 CEST 2008
523 - correctly provide default DIE/WARN handlers as documented.
524 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
525 implementations inside perl work fine for us.
526
5274.743 Mon Jun 16 00:21:57 CEST 2008
528 - when using Coro::EV without running EV::loop it could
529 result in busy-waiting for events, this has been fixed.
530 - reduce codesize and improve performance by using EV_DEFAULT_UC.
531
5324.742 Sat May 31 14:10:21 CEST 2008
533 - implement a workaround for (some) perl <5.8.8 versions.
534 - require EV 3.3+.
535
5364.741 Fri May 30 23:33:09 CEST 2008
537 - tell netbsd how utterly broken their imitation of an OS is
538 and refuse to build by default if pthreads are in use.
539 - switch to "s" method on all bsd's by default, as their ucontext
540 stuff seems just too broken.
541 - fix a bug in Coro::Select.
542
5434.74 Thu May 29 20:05:31 CEST 2008
544 - do not test Coro::LWP for lack of dependencies.
545 - do not test Coro::Select for lack of working perls.
546
5474.73 Thu May 29 2008
548 - fix a bug in Coro::EV which would cause it to block despite
549 there being runnable coroutines.
550 - sprinkle "no warnings" freely over everything, also suppress
551 warnings for some other modules.
552 - fix typo in WSAEWOULDBLOCK.
553
5544.72 Sun May 25 05:14:36 CEST 2008
555 - tweak META.yaml a bit, unfortunately, there is no documented way
556 to have optional dependencies with CPAN. doh :(
557 - avoid running some tests on windows because they would fail due to
558 perl bug (broken fork, broken pipes...).
559 - work around perl on windows bugs where perl returns undocumented
560 error codes for sysread, syswrite etc. by taking advantage
561 of AnyEvent's workaround for that problem.
562 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
563 a common perl implementation bug on windows.
564 - use unix domain sockets in testsuite to work around
565 common perl implementation bugs on widows (they are emulated by
566 tcp sockets on windows. ugh.)
567
5684.71 Sat May 24 20:01:27 CEST 2008
569 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
570 - take advantage of async name resolution of AnyEvent::Util.
571 - work around brutal inet_aton override in Coro::LWP.
572 - take advantage of the readyhook in Coro::EV, for smoother
573 scheduling.
574
5754.7 Sun May 11 00:32:19 CEST 2008
576 - completely reworked the Coro manpage.
577 - added Coro::AnyEvent, generic event loop integration.
578 - implement cancel, ready and kill commands in Coro::Debug.
579 - document find_coro in Coro::Debug.
580 - incompatible change: rename has_stack to has_cctx.
581 - Coro::AIO and Coro::BDB no longer force event model detection,
582 use AnyEvent::AIO and AnyEvent::BDB.
583
5844.6 Sat Apr 26 10:05:14 CEST 2008
585 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
586 by the Coro module. It was a mistake to have it in the first place.
587 - (experimental) support for activestate perl 5.10 (method "w").
588 - (experimental) support for strawberry perl (method "a").
589 - coro_sigelem_set did not return a value although it had to,
590 actual impact unknown.
591
5924.51 Mon Apr 14 13:28:27 CEST 2008
593 - make it compile again on 5.8.
594
5954.50 Thu Apr 10 09:43:17 CEST 2008
596 - I did it twice! (see 4.49).
597
5984.49 Sun Apr 6 21:23:31 CEST 2008
599 - grr, instead of compiling the recent changes on 5.10 only they
600 were compiled on 5.8 only.
601
6024.48 Sun Apr 6 20:36:46 CEST 2008
603 - allow coroutine switches during eval's under 5.10.x, as it seems
604 the parser is a per-interpreter option now, so this is safe
605 (this might fix the odd crashing bug).
606 - drop support for 5.9.x versions: they are dead, jim.
607
6084.47 Sun Apr 6 00:37:52 CEST 2008
609 - force cctx allocation on API calls: we know we need to force one
610 and gcc actually manages to confuse our heuristic nowadays,
611 leading to crashes and worse.
612 - document force_cctx.
613
6144.46 Fri Apr 4 22:05:43 CEST 2008
615 - upgrade libcoro, resulting in pthread-backend (which was only created
616 to fulfill the rules of the programming languages shootout).
617
6184.45 Thu Mar 13 11:55:36 CET 2008
619 - fix a file leaking bug in eg/mhyttpd that would allow
620 downloading of any file (reported by oesi).
621 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
622 (also add testcase).
623 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
624 apparently having loads of fun with that).
625 - implement $state->swap_defsv, ->swap_defav and document ->throw.
626
6274.4 Wed Feb 13 16:44:29 CET 2008
628 - only assume .cfi pseudo isns exist on GNU/Linux.
629 - add get_timed method to Coro::Channels.
630 - fixed Coro::Debug manpage.
631 - perl 5.11 compatbility improvement based on patch by
632 Andreas König.
633
6344.37 Sun Jan 20 11:25:23 CET 2008
635 - soften the check for an active parser for perl 5.10 (avoiding
636 "Coro::State::transfer called while parsing" in many cases).
637
6384.36 Sun Jan 13 10:53:56 CET 2008
639 - reset diehook when terminating from an async_pool as to not
640 trigger any __DIE__ handlers.
641
6424.35 Sun Jan 13 04:14:13 CET 2008
643 - "bt" debug command now displays any exceptions
644 from longmess and also skips the innermost
645 stackframes, giving more useufl output.
646 - allow backtraces in coroutines blocked in Coro::EV,
647 at a <1% speed hit.
648 - handle localising of $SIG{__WARN__} and __DIE__
649 properly (with a proper amount of dirty hacking).
650
6514.34 Sat Dec 22 17:49:53 CET 2007
652 - upgrade to EV version 2.0 API.
653
6544.33 Mon Dec 17 08:36:12 CET 2007
655 - make Coro::AIO etc. loadable in the absence of EV.
656
6574.32 Mon Dec 17 07:46:02 CET 2007
658 - majorly improved Coro::Handle's performance with Coro::EV.
659 - implemented the until now mythical Coro::BDB module.
660 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
661
6624.31 Wed Dec 5 12:32:39 CET 2007
663 - remove warn statement form Coro::Util.
664
6654.3 Tue Dec 4 20:33:14 CET 2007
666 - calls to the idle function could cause stack corruption
667 when the stack changed.
668 - do no longer rely on the presence of EV::DNS if EV is used
669 (because it is gone), but instead take avdantage of EV::ADNS
670 if available.
671 - add ($) prototypes to all functions in Coro::Storable.
672 - use a conventional (safer) idle callback in Coro::EV.
673 - do accept quickly in Coro::Debug to avoid endless loops.
674
6754.22 Fri Nov 30 16:04:04 CET 2007
676 - really use optimised versions for Event and EV in Coro::Util
677 and Coro::Handle.
678
6794.21 Sun Nov 25 10:48:59 CET 2007
680 - fix a spurious memory read.
681 - Coro::EV no longer keeps the eventloop "alive".
682
6834.2 Fri Nov 9 20:47:05 CET 2007
684 - enable/disable tracing from a new coroutine, not a pooled one.
685 - fix a memleak in Coro::Event.
686 - removed killall call from fork_eval.
687 - made sure store_fd is already loaded so that fork_eval
688 does not have to parse autoload in each subprocess.
689 - only use assembly method if -O switch is in $Config{optimize}.
690 - add (optional) Coro::EV module, so far the best event loop module
691 directly supported by Coro.
692 - if the event model is EV, use EV::DNS to resolve
693 stuff in Coro::Util.
694 - don't get confused by multiple event notifications in Coro::Handle.
695 - initial support for EV (libevent interface).
696 - require Event and EV using configure_requires, to force their existance.
697
6984.13 Wed Oct 24 07:26:45 CEST 2007
699 - add Coro::Storable::blocking_thaw.
700 - use a vastly more complicated technique to localise
701 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
702 - use a coroutine for the idle callback Coro::Event,
703 instead of running Event in the current coroutine context.
704 This also catches recursive invocations.
705 - actually report fork errors in gethostbyname and inet_aton.
706
7074.11 Thu Oct 11 02:40:24 CEST 2007
708 - port to threaded perls.
709
7104.1 Thu Oct 11 02:38:16 CEST 2007
711 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
712 be local to each coro (see Coro::State).
713 - incompatible change: for very deep reasons, cede and cede_notself
714 cannot return anything, so nothing will be returned.
715 - possibly bring back 5.10 compatibility (untested).
716 - work around stupid (and wrong) warning on 5.10 :(.
717 - overlay the saved state over the context stack. This saves
718 a few hundred bytes per coroutine on average and also
719 speeds up context switching a bit.
720 - further tune default stack sizes.
721 - (more) correctly calculate stack usage in coro_rss.
722 - Coro::Storable::blocking_* did not properly lock
723 resulting in races between coroutines.
724 - added Coro::Storable::guard.
725 - stopping to trace a coroutine could destroy the cctx of
726 an unrelated coroutine.
727 - explain the relationship between Perl and C coroutines in
728 more detail in Coro::State.
729 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
730 causing a fork per resolve. This also affected Coro::Socket.
731 - switch to a separate stack in $coro->call/eval to avoid
732 invalidating pointers.
733
7344.03 Sat Oct 6 21:24:00 CEST 2007
735 - added Coro::throw method.
736 - minor code cleanups.
737
7384.02 Sat Oct 6 02:36:47 CEST 2007
739 - fix a very minor per-coroutine memleak (a single codereference).
740 - fixed a bug where the currently in-use c context would be freed
741 prematurely (can happen only when programs change the stacksize
742 or use tracing).
743 - tracing can no longer keep a coro alive after it terminated.
744 - do static branch prediction in the common path for gcc. gives
745 about 2-5% speed improvement here.
746
7474.01 Fri Oct 5 22:10:49 CEST 2007
748 - instead of recreating *a* standard output handle we simply
749 use STDOUT, which is faster and hopefully more robust.
750
7514.0 Fri Oct 5 12:56:00 CEST 2007
752 - incompatibly changed Coro::Storable::freeze.
753 - major new feature: added Coro::Debug, for interactive coroutine
754 debugging, tracing and much more.
755 - major bug fix: unbelievable, but true: $_, $/ and many other
756 "saved" variables actually weren't being saved. This has been fixed,
757 of course, while increasing performance while losing all the save
758 flags.
759 - save flags are gone, and all the api functions dealing with them.
760 - added Coro::Semaphore::adjust.
761 - added Coro::Util::fork_eval.
762 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
763 - added Coro::killall.
764 - reduce initial stack sizes to allow for "micro-coroutines".
765 - better async_pool resource management, moved parts of async_pool
766 handling to XS (major speed improvement).
767 - actually croak before modifying important data structures.
768 - refuse to transfer while compiling.
769 - possibly support eval EXPR better now.
770 - enable assembly per default on linux+bsd x86+amd64.
771 - all internal members were renamed _something for easier subclassing.
772 - many minor tweaks.
773
7743.63 Wed May 16 14:10:06 CEST 2007
775 - implement handcoded assembly for x86/amd64 SVR ABI.
776
7773.62 Fri Apr 27 21:36:06 CEST 2007
778 - upgrade libcoro (which might set unwind info correctly).
779 - change default on linux to setjmp/longjmp.
780
7813.61 Thu Apr 19 12:36:18 CEST 2007
782 - Coro::Storable caused an endless loop when thawing invalid
783 pst's sometimes.
784 - use a Semaphore in Coro::Storable, as Storable doesn't
785 seem to be reentrant (although it is documented to
786 be threadsafe...).
787 - fix Coro::Signal to bring back the original unreliable
788 but stateful semantics.
789 - fixed a lot of typos in Coro.pm (patch submitted by David
790 Steinbrunner, which applied flawlessly).
791
7923.6 Sat Apr 14 17:13:31 CEST 2007
793 - added some bugfixes to get eg/myhttpd working again.
794 - added Coro::Storable for often-cede'ing freeze/thaw.
795 - try to do a clean exit when a coroutine calls exit
796 (EXPERIMENTAL).
797 - got rid of indirect call through _coro_init.
798 - updated the partly antique examples in eg/ to
799 work again and be a bit less magic, too.
800 - fixed Coro::Signal semantics to work as documented again.
801
8023.55 Sun Mar 25 01:20:47 CET 2007
803 - add SAVE_DEFFH to save the default filehandle and enable
804 it by default.
805 - finally move socket-operations from Coro::Socket to Coro::Handle
806 to be able to unblock foreign sockets.
807 - add Coro::State::save_also and guarded_save.
808 - add count accessor to Coro::Semaphore.
809 - add Coro::State::cctx_stacksize.
810 - just for the fun of it, do not rely on implicit context,
811 which can dramatically improve performance, but people
812 using windows-process-emulation perls do not care much about
813 performance.
814
8153.51 Sun Mar 4 14:18:04 CET 2007
816 - fixed a problem when you weakened references to Coro::State's
817 (patch by Yuval Kogman).
818
8193.501 Wed Feb 28 12:44:07 CET 2007
820 - rename some global symbols as macosx from hell redefines
821 them without asking.
822
8233.5 Tue Feb 13 20:22:53 CET 2007
824 - do AnyEvent model detection earlier, avoiding problems
825 caused by first using AnyEvent and later Coro::Event.
826 - implement and document Coro::Event event objects.
827 - fix a potential problem in Coro::Event causing crashes.
828 - initialise PL_comppad when creating a new coroutine,
829 avoids crashes on early coro destruction.
830
8313.41 Mon Jan 22 19:19:49 CET 2007
832 - readline on Coro::Handle did not support undefined $/,
833 nor did it deliver partial lines on EOF or error.
834 - implement malloc fallback for stack allocation because
835 stupid broken idiotic OSX has a stupid broken
836 idiotic fits-the-whole-os mmap "implementation" and
837 my dick feels longer if Coro is portable even to
838 obsolete platforms.
839
8403.4 Fri Jan 19 21:52:54 CET 2007
841 - remove t/09_timer.t, as it isn't really testing much
842 but was rather flaky in practise.
843 - async_pool coro would keep arguments and callback alive until
844 it was reused.
845 - cancellation of a coroutine could cause spurious idle calls
846 in cede_notself.
847
8483.3 Sat Jan 6 03:45:00 CET 2007
849 - implement $coro->on_destroy.
850 - Coro::Event blocking semantics have been changed,
851 documented and - hopefully - improved.
852 - fix nice adding, not subtracting, from priority.
853 - fix ->prio and api_is_ready (patch by Mark Hinds).
854 - fixed an assert ("... == prev__cctx->idle_te")
855 that could errronously trigger.
856 - fix various large and small memleaks.
857 - use a (hopefully) more stable cancel implementation
858 that immediately frees the coroutine data.
859 - cede/cede_notself return a status now.
860 - added Coro::guard function.
861 - added a global coroutine pool for jobs (on my machine,
862 I can create and execute 48k simple coros/s with async,
863 and 128k coros with async_pool).
864 - Coro::AIO now uses the coroutine priority as io priority.
865
8663.2 Fri Dec 22 05:07:09 CET 2006
867 - improve portability to slightly older perls.
868 - use cleaner coroutine destruction.
869 - simplify configuration for users.
870 - optionally (unrecommended) prefer perl functions over
871 their coro replacements.
872
8733.11 Tue Dec 5 13:11:24 CET 2006
874 - fixed some bogus assert's, but as perl.h disables assert even
875 without NDEBUG (thank you very much), not too many people should
876 notice (that did include myself). Andreas König noticed, though :)
877 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
878 it. Also noticed by Andreas König :)
879 - save/restore tainted status.
880 - verified to pass the testsuite on my 5.9.5.
881
8823.1 Mon Dec 4 23:03:40 CET 2006
883 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
884 - incompatible change: transfer flags are now per-state.
885 - give a better error message on deadlock.
886 - document Coro::nready.
887 - enhanced testsuite.
888
8893.01 Sun Dec 3 23:47:42 CET 2006
890 - forgot to include Coro::Timer.
891
8923.0 Sun Dec 3 22:57:25 CET 2006
893 - the "FINALLY COMPLETELY STABLE" release (coming soon:
894 the "FAMOUS LAST WORDS" release).
895 - implement a new stack sharing algorithm, which uses a stack
896 pool (size currently hardcoded).
897 - make stack sharing mandatory (it no longer uses a heuristic).
898 - eval/die no longer cause weird problems under heavy use.
899 - Coro::Event could cause livelocks if it was used but
900 no Coro::Event watchers were used.
901 - Coro::Event now uses asynccheck as prepare does not
902 check for changed watchers.
903 - Coro::Event allows multiple waiting coros and will wake up one
904 per event.
905 - Coro::Event should be cleaner and more efficient now.
906 - new utility function Coro::unblock_sub.
907 - document the sad fact that Event is no longer reentrant.
908 - putting a coroutine into the ready queue twice could under
909 some circumstances lead to stack corruption.
910 - minor incompatibility: subclassing Coro::State is supported
911 directly now without going through a _coro_state member.
912 - state/coro switching is much faster now.
913 - very minor optimisations and code/documentation cleanup.
914 - avoid problems due to compiler inlining.
915 - removed timers from Coro::Timer -> use AnyEvent instead.
916 - replaced Coro::idle coroutine by (cleaner) idle handler.
917 - updated to newest libcoro.
918 - implement enhanced support for valgrind.
919 - implement is_ready and return value for ready.
920 - removed Coro::Cont, it was a misnomer (it's generators),
921 and it was somewhat annoying to get it right. Will come back
922 if somebody asks for it :)
923 - many ->wait methods and Coro::Event could return
924 spuriously without the event having happened.
2 925
32.5 Tue Nov 7 12:22:33 CET 2006 9262.5 Tue Nov 7 12:22:33 CET 2006
4 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket 927 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
5 use AnyEvent, moved them to Coro/. 928 use AnyEvent, moved them to Coro/.
6 - added Coro::LWP which contains all the uglyness required to 929 - added Coro::LWP which contains all the uglyness required to

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