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Comparing Coro/Changes (file contents):
Revision 1.111 by root, Mon Sep 5 22:13:05 2005 UTC vs.
Revision 1.617 by root, Thu May 9 05:40:13 2013 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: __GCC_HAVE_DWARF2_CFI_ASM
6
76.31 Thu May 9 07:39:48 CEST 2013
8 - Coro::AIO requests would crash if the thread was ready'd
9 while the request was ongoing.
10
116.29 Wed May 8 02:55:18 CEST 2013
12 - when an on_destroy handler destructs the coro currently being
13 destructed a perl scalar could be accessed after being freed,
14 likely causing a crash.
15
166.28 Wed Mar 6 06:58:02 CET 2013
17 - clean remnants of existing __DIE__ and __WARN__ handlers so
18 they lose their magic and will not cause segfaults later
19 (testcase by Andrey Sagulin).
20 - improved Coro::State documentation a bit.
21 - Coro::Debug::command now flushes the output.
22 - add hack detection code for x32 abi, because the braindead slugs
23 who designed that made it look exactly like x86_64 without
24 providing proper compile time symbols to test for it. as a result,
25 this detection cannot work reliably.
26 - valgrind stack registering was broken.
27 - do not rely on Time::HiRes anymore in Coro::Debug.
28
296.23 Fri Dec 7 23:36:37 CET 2012
30 - use experimental fiber implementation on native windows
31 perls.
32 - use sizeof (void *) as multiplication factor for stack sizes,
33 to accomodate the totally braindamaged microsoft 64 bit "os".
34 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
35 activeperl 5.16 crashes when PerlIO_define_layer is called due
36 to some bug in the perl dll, strawberry perl at least passes
37 the testsuite.
38 - implement Coro::Handle->peeraddr/host/port, for slightly
39 improved compatibility with LWP.
40 - implement 5.17 compatibility by almost blindly applying a
41 good-looking patch by Father Chrysostomos.
42 - move stack management functions into libcoro 3.
43 - libcoro version 3 "released".
44 - support magic values as timed_io_once args.
45 - recommend AnyEvent 7+ or EV 4+, also require EV
46 version 4 or newer for Coro::EV.
47
486.10 Tue Oct 9 01:14:27 CEST 2012
49 - updated ecb.h, it had a typo that caused it to not compile on many
50 big endian systems (reported by many people).
51 - disable memory fences in ecb.h to improve portability.
52
536.09 Sat Oct 6 23:25:02 CEST 2012
54 - Coro::EV I/O watchers were not interruptible by exceptions
55 (Coro::State::throw) (testcase by sten).
56 - ->throw now puts threads into the ready queue, as this seems to
57 be expected by existing code, and code that doesn't cope with spurious
58 wakeups needs fixing anyway.
59 - use fd -1 in mmap.
60 - cast I32 to int in error message printf.
61 - warn about broken so-called "hardened" kernels.
62
636.08 Fri Apr 13 12:05:47 CEST 2012
64 - be more aggressive about exiting like perl does - formerly,
65 exiting from the non-main thread would not execute END blocks.
66
676.07 Fri Nov 11 21:21:48 CET 2011
68 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
69 - update ecb.h.
70
716.06 Mon Aug 8 23:59:48 CEST 2011
72 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
73 backend, which is an order of magnitude slower. unfortunately, cygwins
74 pthread implementation isn't very complete either, so allocate the stack
75 twice just to be sure.
76 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
77 in its ithreaded perl - best recompile cygwin and use the 'w'indows
78 backend for much better performance. also disable ithreads for
79 even better performance...).
80
816.05 Thu Aug 4 21:36:36 CEST 2011
82 - blush, condvar values would not be propagated from send to recv anymore
83 (reported by Chip Salzenberg).
84 - use exponential increase for the readline buffer length in
85 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
86
876.04 Wed Aug 3 17:15:45 CEST 2011
88 - use even more efficient and more compatible condvars for
89 compatibility to AnyEvent 6.x :)
90 - more inconsequential ecb.h updates.
91
926.03 Wed Aug 3 11:41:30 CEST 2011
93 - change how Coro patches AnyEvent condvars for compatibility to
94 AnyEvent 6.x.
95 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
96 hasn't been included.
97
986.02 Wed Jul 13 04:35:19 CEST 2011
99 - "improve portability to Gentoo" - gentoo manages to put perl variables
100 in memory areas that are farther than 2gb apart, which the jit couldn't
101 handle and barfed. now it's just a bit slower on gentoo and similar
102 systems.
103
1046.01 Sun Jul 3 12:31:14 CEST 2011
105 - workarounds are good, but the test for whether pthreads are used
106 was not good. thisone should be better.
107 - check differently whether gcc generates cfi instructions itself.
108
1096.0 Wed Jun 29 19:43:35 CEST 2011
110 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
111 destroyed and cleaned up automatically (e.g. async { schedule }).
112 - implement a JIT compiler for part of the thread switch code,
113 which gives a 50% speed improvement on threaded perls, and
114 about 4% on non-thraeded perls (so threaded perls now finally
115 reach about half the speed of non-threaded perls).
116 - slightly modernise Coro::Intro, add section about rouse functions.
117 - avoid DEFSV and ERRSV, giving another 10% improvement
118 in thread switching.
119 - Coro::State->is_destroyed is now called is_zombie.
120 - implement a Coro->safe_cancel method that might fail, but
121 cancels in a "safer" way if it succeeds.
122 - add preliminary support for DEBUGGING perls.
123 - get rid of two hash-accesses when initialising a new Coro - this
124 speeds up coro creation by almost a factor of two.
125 - croak when a coro that is being cancelled tries to block
126 (e.g. while executing a guard block), instead of crashing or
127 deadlocking.
128 - use a more robust and also faster method to identify Coro::State
129 objects - speeds up everything a bit.
130 - implement Coro->cancel in XS for a 20% speed improvement, and to
131 be able to implement mutual cancellation.
132 - speed up context switches by a percent or two by more efficiently
133 allocating context stack entries.
134 - implement Coro->join and Coro->on_destroy in XS for a speedup and
135 a reduction in memory use.
136 - cancelling a coro while it itself is cancelling another coro is
137 now supported and working, instead of triggering an assertion.
138 - be a bit more crash-resistant when calling (buggy) on_destroy
139 callbacks (best effort).
140 - move on_destroy into the slf_frame, to allow extension slf
141 functions to have destructors.
142 - get rid if coro refcounting - simply crash in other interpreter
143 threads by nulling the pointers on clone.
144 - simplify warn/die hook handling when loading Coro - the convoluted
145 logic seems to be no longer neccessary.
146 - use libecb instead of our own home-grown gcc hacks.
147 - document alternatives to Coro::LWP. Please use them :)
148 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
149 sigaltstack. Really. wine suffers from it, erlang suffers from it,
150 and it's known since at least 2006.
151
1525.372 Wed Feb 23 06:14:30 CET 2011
153 - apparently mingw doesn't provide a working gettimeofday, try to
154 work around that by relying on Time::HiRes (indirectly brought to
155 my attention by Max Maischein).
156 - fix some portability issues when Time::HiRes was used.
157
1585.371 Mon Feb 21 14:36:08 CET 2011
159 - backport to windows process emulation code again.
160
1615.37 Sat Feb 19 07:49:44 CET 2011
162 - add a big "Coro thread life cycle" section to "man Coro".
163 - try a tentative workaround against the breakage that 5.13 has
164 introduced without depreciation period. sigh.
165 - no longer use Time::HiRes if gettimeofday is available, which
166 saves quite a lot of memory.
167
1685.36 Sun Feb 13 05:33:41 CET 2011
169 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
170 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
171 method call.
172 - undocument Coro::Timer::sleep and obsolete whole module.
173 - optimise Coro::Timer::timeout memory and cpu usage.
174 - slightly updated Coro::Intro for recent changes.
175 - do not initialise PL_dirty anymore.
176
1775.25 Thu Nov 11 01:08:39 CET 2010
178 - try a different approach on netbsd - netbsd 5 finally has marginally
179 working pthreads, but still broken ucontext/sigaltstack.
180 - openbsd 4.8 finally got their act together, Coro works out of the box
181 with asm, setjmp and pthreads (no change, just informational).
182
1835.24 Sat Oct 23 11:27:12 CEST 2010
184 - port to the EV 4.0 API.
185 - work around bugs in mingw32, making strawberry perl work
186 out of the box.
187 - correctly modify Coro::AIO function prototypes
188 so that they reflect the "no optional parameters" rule.
189 - "ported" libcoro to C++.
190
1915.23 Mon May 17 18:50:42 CEST 2010
192 - be more resistant to ordering changes when initialising
193 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
194 Waldorf).
195 - document that perl 5.12 deliberately removed support for cloning.
196
1975.22 Wed Apr 14 03:55:35 CEST 2010
198 - correctly return udnef on errors in Coro::Handle::read/write
199 (testcase by Marc Mims).
200 - convert Coro::Util into a "perl compatibility wrapper" - the functions
201 are less useful now, but are drop-in replacements for existing
202 functions, listing better alternatives in the documentation. This also
203 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
204 with Coro::Util::inet_aton.
205 - do not override $Coro::idle unconditionally in Coro.pm, as other
206 modules could have provided their own idle coro already
207 (for exmaple, Coro::AnyEvent).
208 - fix Coro::Util::gethost* functions.
209 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
210
2115.21 Wed Dec 16 07:19:51 CET 2009
212 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
213 together.
214 - add some examples on how to combine other event loops with Coro in
215 Coro::AnyEvent, and how to run it (and not to block). Seems to be
216 the most common source of confusion.
217 - try to catch people naively blocking in an event callback.
218 - work around the perl filehandle bug issue in conjunction with
219 older common::sense (as indirectly pointed out by ZSystem).
220 - clarify the "not from signal handlers" section.
221
2225.2 Sun Oct 4 14:54:24 CEST 2009
223 - Coro::Storable destroyed the prototypes of the functions it wrapped.
224 - export rouse_cb and rouse_wait by default now.
225 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
226 - new method $state->swap_sv.
227 - added section on "windows process emulation" to the manpage,
228 after a not-so-fruitful (nor-friendly) "discussion" with chip
229 salzenberg (discussion implies arguments, but his only arguments
230 were ad-hominems, one wonders why he started it in the first
231 place). I hope this explains it well enough for him to understand,
232 and maybe well enough for others to understand.
233 - use common::sense everywhere now.
234 - idle callbacks are no longer supported, use idle coros instead.
235 - print a thread listing when a deadlock is detected.
236
2375.17 Sat Aug 22 23:09:31 CEST 2009
238 - work around a bug in the perl debugger causing crashes
239 when running under the debugger by marking _pool_handler as nodebug.
240 - speed up Coro::async considerably.
241 - try some hacks to get netbsd to work "more often" - their broken
242 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
243 - convert Coro to AE 5.0 API.
244
2455.162 Tue Jul 28 04:04:03 CEST 2009
246 - perl 5.8.2 is now minimum requirement.
247 - skip t/19_handle.t on broken windows perls.
248
2495.161 Wed Jul 22 04:47:38 CEST 2009
250 - Coro::AnyEvent::poll could have a different prototype when EV was
251 used as backend (analyzed by Tatsuhiko Miyagawa).
252 - Coro::AnyEvent errornously initialised the event loop when loaded,
253 not on demand.
254 - try to workaround rare */t/01_unblock.t failures.
255
2565.16 Tue Jul 21 01:44:37 CEST 2009
257 - Coro::AnyEvent failed to hook into the event loop
258 when no threads had been readied between detecting
259 the event loop and actually running it.
260 - considerably speed up Coro::Select by taking avdantage
261 of AnyEvent > 4.8 and some other optimisations.
262 - implement paragraph readline mode in Coro::Handle
263 (based on patches by Zsbán Ambrus).
264 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
265 and analyzed by Yasuhiro MATSUMOTO).
266 - clarified libcoro license and copyright.
267 - someone stole my EXTRA_META!!!
268 - implement Coro::Select::patch_pp_sselect and it's brother,
269 for hardcode select overriding.
270
2715.151 Mon Jul 6 05:41:57 CEST 2009
272 - backport to windows process emulation code again (patch by
273 Yasuhiro MATSUMOTO).
274 - slightly update Coro::MakeMaker.
275
2765.15 Tue Jun 30 10:28:06 CEST 2009
277 - deprecate Coro::Socket, document how to get ipv6 support via
278 AnyEvent::Socket instead.
279 - implement signal->wait ($cb) interface, similar to semaphores.
280 - work around SvOK not supporting getmagic, so we have to getmagic
281 to test for undef :/ (reported by Matthias Waldorf).
282 - load Coro::AnyEvent in all modules using AnyEvent.
283 - work around perl corrupting our internal data structures,
284 reported by Tokuhiro Matsuno.
285 - enable per-coroutine real and cpu time gathering
286 (Coro::State::enable_times).
287
2885.14 Wed Jun 24 01:37:48 CEST 2009
289 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
290 as this seems to have been a difficult concept (poll, sleep, idle,
291 idle_upto).
292 - add Coro::AnyEvent::readable/writable functions.
293 - clarify Coro::EV/Event/AnyEvent manpages.
294 - free per-thread global scalars in the thread calling ->cancel, to
295 avoid crashes when $_, $@ etc., are magical but some of those
296 had already been freed.
297 - "unexperimentalise" the callback interface for Coro::Semaphore.
298 - speed up ready queue management/context switching by using a linked
299 list instead of an array (~5-10%).
300 - implement "watch" command in Coro::Debug shells.
301 - for fun, implement time-slicing as an example in the manpage.
302 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
303 Coro::Event, use the normal AnyEvent handling instead of dieing
304 (the same is true for Coro::Handle).
305 - properly document Coro::EV::timed_io_once.
306 - avoid unneccessary ->cancel calls in Coro::Handle.
307 - maybe make it work on mingw32 with win32 backend
308 (based on patch by Yasuhiro Matsumoto).
309
3105.132 Fri May 29 09:00:39 CEST 2009
311 - do not keep a reference to the argument itself in
312 Coro::Semaphore::guard, as it could change later.
313 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
314 should support a prepare callback.
315
3165.131 Mon Mar 16 23:20:37 CET 2009
317 - implement and document Coro->suspend, Coro->resume.
318 - fix Coro::Select implementation to not (often) close
319 the passed file descriptors (testcase provided by pippijn).
320
3215.13 Mon Dec 15 21:51:42 CET 2008
322 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
323 - don't set diehook to C<undef> but instead to NULL, to avoid
324 spurious warnings.
325 - fix a lot of bugs in Coro::SemaphoreSet.
326 - Coro::SemaphoreSet will less often create a semaphore needlessly.
327 - add Coro::SemaphoreSet::count and wait methods.
328 - take advantage of the new Guard module.
329 - deprecate Coro::guard.
330 - try to fix the dreaded 01_unblock tests once more. I hate it when
331 testsuites need more fixing than the code they are supposed to test.
332 - croak in more cases when a required callback isn't resolvable.
333 - fix some minor issues in Coro::State->call/eval.
334 - use current coroutine context instead of a temporary one
335 when temporarily switching to another coroutine.
336 - do not call C-level on_destroy handlers during global destruction,
337 to avoid needless segfaults.
338
3395.12 Sun Dec 7 13:30:38 CET 2008
340 - add default config for MirOS, which seems to be a bug-to-bug
341 compatible fork of openbsd ("world domination by releasing
342 openbsd cvs before the openbsd folks do it" or so :).
343 - free_padlist did destroy the names pad, not good, but didn't
344 seem to bother perl - this could fix issues such as eval ""
345 inside a function called from multiple coroutines.
346 - use a different method to detect destruction time.
347 - be more careful when freeing padlists just before global
348 destruction.
349 - fixed and expanded the call/cc example.
350 - renamed _terminate to _coro_run.
351 - new method Coro::Channel->shutdown.
352 - try pthreads on openbsd <4.4 (broken sigaltstack, will
353 pthreads fare better?).
354 - be less picky about destroying "a" running coroutine.
355
3565.11 Tue Nov 25 21:49:05 CET 2008
357 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
358 working code with failed assertions, introducing more bugs than
359 it fixes, requiring elaborate workarounds :(
360
3615.1 Mon Nov 24 08:54:59 CET 2008
362 - wrote a small introductory tutorial - Coro::Intro.
363 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
364 - Coro::Select did errornously dup the file descriptors
365 and didn't work with all AnyEvent backends.
366 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
367 LWP data transfers.
368 - disassociate c contexts from coro objects - this is agruably more
369 correct, but mostly allows sharing of cctxs between coro and state
370 objects, for added memory savings and speed increases.
371 - bumped $Coro::POOL_RSS up to 32kb by default.
372 - no longer set the optype to OP_CUSTOM, as B::* understandably
373 doesn't like this very much (and we *are* a type of entersub).
374 - implement state cloning, just to prove that call/cc can be done.
375 - automatically load Coro::AnyEvent in Coro::Handle.
376 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
377 do not have this method (and don't need it either).
378 - speed up generic anyevent methods in Coro::Handle by using rouse
379 callbacks.
380 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
381 others. It also makes the debugger happier, as you can trace
382 through the idle threads now.
383 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
384 - eg/event was pretty broken.
385 - better 5.8.6 compatibility.
386
3875.0 Thu Nov 20 10:35:05 CET 2008
388 - NEW ARCHITECTURE: use the latest 4.x version if you experience
389 stability issues.
390 - bump API version to 7 - all dependents must be recompiled.
391 - removed timed_* functions - they were not being used anyways
392 and should be replaced by a more generic mechanism -
393 and were annoying to support anyways :)
394 - removed SemaphoreSet's waiter method - use sem method instead.
395 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
396 - async_pool did free a scalar value twice
397 ("Attempt to unreference...").
398 - fix a longstanding bug where calling terminate on a coro that
399 was waiting for a semaphore that was just becoming available
400 would cause a deadlock (semaphore would get into a state where
401 it was available but waiters were still blocked).
402 - calling throw on a coroutine that is waiting for a semaphore will
403 no longer make it acquire the semaphore (and thus leak a count).
404 - perl's process emulation is now not even theoretically supported
405 anymore.
406 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
407 conversion of callback-style to blocking-style.
408 - new methods $coro->schedule_to and ->cede_to, to specifically
409 schedule or cede to a specific coroutine.
410 - new function Coro::Semaphore::wait.
411 - use named constants in Coro::Channel (Richard Hundt).
412 - directly patch the entersub opcode calling SLF functions (cede,
413 transfer and so on). this does speed up context switching, but
414 more importanly, it frees us from the hardcoded behaviour of
415 entersub, so we might actually be able to return something from
416 those functions and atcually create new ones.
417 - take advantage of __builtin_frame_address on gcc.
418 - expose THX in coroapi (not sure whether this was a wise decision,
419 as "threaded" perls are running at half speed anyways).
420 - implement execute_slf (schedule-like-function) interface that makes
421 it possible to implement schedule-like-functions in XS.
422 - use new SLF interface to massively speed up Coro::EV by roughly a
423 factor of two.
424 - used new SLF interface to massively speed up Coro::Semaphore by a
425 factor of three.
426 - used new SLF interface to speed up Coro::AIO by roughly a factor of
427 four and reduce its memory usage considerably.
428 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
429 for a nice speedup and vastly more correct behaviour. Also implement
430 a new method "sem" to get at the underlying semaphore object.
431 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
432 (in comparison) 20-40% speedup.
433 - used new SLF interface to reimplement Coro::Signal gaining
434 some unknown (because I was too lazy), but certain, speedup, and also
435 making signals reliable for the first time.
436 - used new SLF interface and other optimisations to speed up async_pool
437 by a factor of two. It also doesn't rely on perl's exception mechanism
438 to exit anymore. The overhead for terminating an async_pool, coro over
439 a normal async is now very small.
440 - sped up coroutine creation/destruction by 40%.
441 - forgot to include Coro/libcoro/README in the dist for all these years.
442 - work around a freebsd pthreads bug (manual testcancel is required as
443 pthread_cond_wait isn't a cancellation point on freebsd).
444 - use new rouse functions to speed up and simplify Coro::BDB.
445 - make "prefer perl native functions" work with threaded perls.
446 - condense Coro::Debug ps output, hint at v and w flags.
447 - (libcoro) lots of minor cleanups and portability improvements.
448
4494.914 Wed Nov 19 12:54:18 CET 2008
450 - fix a disastrous bug in the readline optimisation
451 introduced in 4.801.
452
4534.913 Sat Nov 15 07:58:28 CET 2008
454 - async_pool did free a scalar value twice
455 ("Attempt to unreference...").
456
4574.912 Thu Nov 13 18:31:23 CET 2008
458 - minor cleanups.
459 - use much larger stacks on linux and perl < 5.8.8.
460 - Coro::Debug::new_unix_server did not unlink the socket
461 when destroyed.
462
4634.911 Tue Nov 11 04:26:17 CET 2008
464 - "port" to threaded perls.
465
4664.91 Mon Nov 10 05:36:38 CET 2008
467 - the ->throw exception object no longer leaks.
468 - creating a new cctx leaked a scopestack entry (memleak).
469 - new coroutines didn't get created with a zero flags field
470 (unknown impact).
471 - calling ->throw on a not-yet-started coroutine should now work
472 instead of being ignored.
473 - ->throw is now supported on Coro::State objects.
474 - clean up cctx creation code a bit.
475 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
476
4774.9 Sat Nov 8 17:45:27 CET 2008
478 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
479 - (libcoro) no longer leak threads in the experimental pthread backend,
480 also speed it up considerably.
481 - (libcoro) do not rely on makecontext passing void *'s unscathed.
482 - fix compiletime dependencies on libcoro in the Makefile.
483 - cctx_count wasn't always updated properly.
484 - Coro::State::cctx_stacksize wasn't applied correctly.
485 - new function Coro::State::cctx_max_idle.
486 - the default max number of idle C contexts is now 4.
487 - (libcoro) try harder to get _setjmp/_longjmp.
488 - (libcoro) cleanup and extend the libcoro API to officially
489 allow the creation of empty source contexts.
490 - very experimental workaround for the totally broken netbsd platform.
491 - tried to hack around openbsd bugs.
492
4934.804 Wed Nov 5 16:36:00 CET 2008
494 - Coro::Debug::new_unix_server would not create a non-blocking listening
495 socket, sometimes causing freezes.
496 - (libcoro) fix misaligned stack points for setjmp and assembly
497 methods, which can cause crashes on x86/x86_64 with a sufficiently
498 aggressive compiler.
499 - new function: Coro::Debug::new_tcp_server.
500 - move ->throw into the Coro class because it only works on coro objects.
501
5024.803 Mon Nov 3 17:16:12 CET 2008
503 - (libcoro) use a global asm statement to become independent of gcc
504 otpimisations for CORO_ASM (thanks to pippijn for the idea).
505 - try to workaround yet another broken bsd, this time dragonfly.
506
5074.802 Thu Oct 30 10:56:12 CET 2008
508 - support -fno-omit-frame-pointer on x86 with the assembly method.
509 - tune 01_unblock.t tests a bit.
510
5114.801 Wed Oct 22 18:33:37 CEST 2008
512 - improve readline speed for very long "lines".
513 - backport to 5.8.8.
514
5154.8 Thu Oct 2 13:34:40 CEST 2008
516 - new function Coro::AIO::aio_wait.
517 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
518 - greatly speed up and reduce memory usage of Coro::AIO requests.
519 - implement some other µ-optimisations.
520
5214.749 Mon Sep 29 14:40:12 CEST 2008
522 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
523
5244.748 Sat Sep 27 14:03:19 CEST 2008
525 - implement, but do not document, PerlIO::cede(granularity).
526 - Coro::Storable forgot to wrap Storable::pstore.
527 - work around the multitude of leaks and memory corruption
528 bugs in PerlIO::via by using our own C-level perliol. As a side
529 effect, Coro::Storable is now much, much, much faster.
530
5314.747 Tue Sep 23 01:59:41 CEST 2008
532 - fix a per-cv memleak (one empty array was leaked per
533 code reference).
534 - avoid a crash in coro->call|rss when the coroutine was already
535 destroyed (most noticably when using Coro::Debug::ps :)
536 - also protect *Storable::FILE.
537 - push up default storable granularity to 20ms.
538
5394.746 Sun Sep 21 03:22:20 CEST 2008
540 - be more insistent on locking Storable against reentrancy
541 in Coro::Storable.
542 - move swap_def?v and throw to Coro::State, as documented.
543
5444.745 Thu Jul 24 00:14:38 CEST 2008
545 - remove debugging code related to MgPV_nolen_const, also try to
546 make it compile with perl 5.8.6 (yes, apple apparently loves
547 outdated software). Reported by John S.
548
5494.744 Tue Jul 8 22:06:35 CEST 2008
550 - correctly provide default DIE/WARN handlers as documented.
551 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
552 implementations inside perl work fine for us.
553
5544.743 Mon Jun 16 00:21:57 CEST 2008
555 - when using Coro::EV without running EV::loop it could
556 result in busy-waiting for events, this has been fixed.
557 - reduce codesize and improve performance by using EV_DEFAULT_UC.
558
5594.742 Sat May 31 14:10:21 CEST 2008
560 - implement a workaround for (some) perl <5.8.8 versions.
561 - require EV 3.3+.
562
5634.741 Fri May 30 23:33:09 CEST 2008
564 - tell netbsd how utterly broken their imitation of an OS is
565 and refuse to build by default if pthreads are in use.
566 - switch to "s" method on all bsd's by default, as their ucontext
567 stuff seems just too broken.
568 - fix a bug in Coro::Select.
569
5704.74 Thu May 29 20:05:31 CEST 2008
571 - do not test Coro::LWP for lack of dependencies.
572 - do not test Coro::Select for lack of working perls.
573
5744.73 Thu May 29 2008
575 - fix a bug in Coro::EV which would cause it to block despite
576 there being runnable coroutines.
577 - sprinkle "no warnings" freely over everything, also suppress
578 warnings for some other modules.
579 - fix typo in WSAEWOULDBLOCK.
580
5814.72 Sun May 25 05:14:36 CEST 2008
582 - tweak META.yaml a bit, unfortunately, there is no documented way
583 to have optional dependencies with CPAN. doh :(
584 - avoid running some tests on windows because they would fail due to
585 perl bug (broken fork, broken pipes...).
586 - work around perl on windows bugs where perl returns undocumented
587 error codes for sysread, syswrite etc. by taking advantage
588 of AnyEvent's workaround for that problem.
589 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
590 a common perl implementation bug on windows.
591 - use unix domain sockets in testsuite to work around
592 common perl implementation bugs on widows (they are emulated by
593 tcp sockets on windows. ugh.)
594
5954.71 Sat May 24 20:01:27 CEST 2008
596 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
597 - take advantage of async name resolution of AnyEvent::Util.
598 - work around brutal inet_aton override in Coro::LWP.
599 - take advantage of the readyhook in Coro::EV, for smoother
600 scheduling.
601
6024.7 Sun May 11 00:32:19 CEST 2008
603 - completely reworked the Coro manpage.
604 - added Coro::AnyEvent, generic event loop integration.
605 - implement cancel, ready and kill commands in Coro::Debug.
606 - document find_coro in Coro::Debug.
607 - incompatible change: rename has_stack to has_cctx.
608 - Coro::AIO and Coro::BDB no longer force event model detection,
609 use AnyEvent::AIO and AnyEvent::BDB.
610
6114.6 Sat Apr 26 10:05:14 CEST 2008
612 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
613 by the Coro module. It was a mistake to have it in the first place.
614 - (experimental) support for activestate perl 5.10 (method "w").
615 - (experimental) support for strawberry perl (method "a").
616 - coro_sigelem_set did not return a value although it had to,
617 actual impact unknown.
618
6194.51 Mon Apr 14 13:28:27 CEST 2008
620 - make it compile again on 5.8.
621
6224.50 Thu Apr 10 09:43:17 CEST 2008
623 - I did it twice! (see 4.49).
624
6254.49 Sun Apr 6 21:23:31 CEST 2008
626 - grr, instead of compiling the recent changes on 5.10 only they
627 were compiled on 5.8 only.
628
6294.48 Sun Apr 6 20:36:46 CEST 2008
630 - allow coroutine switches during eval's under 5.10.x, as it seems
631 the parser is a per-interpreter option now, so this is safe
632 (this might fix the odd crashing bug).
633 - drop support for 5.9.x versions: they are dead, jim.
634
6354.47 Sun Apr 6 00:37:52 CEST 2008
636 - force cctx allocation on API calls: we know we need to force one
637 and gcc actually manages to confuse our heuristic nowadays,
638 leading to crashes and worse.
639 - document force_cctx.
640
6414.46 Fri Apr 4 22:05:43 CEST 2008
642 - upgrade libcoro, resulting in pthread-backend (which was only created
643 to fulfill the rules of the programming languages shootout).
644
6454.45 Thu Mar 13 11:55:36 CET 2008
646 - fix a file leaking bug in eg/mhyttpd that would allow
647 downloading of any file (reported by oesi).
648 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
649 (also add testcase).
650 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
651 apparently having loads of fun with that).
652 - implement $state->swap_defsv, ->swap_defav and document ->throw.
653
6544.4 Wed Feb 13 16:44:29 CET 2008
655 - only assume .cfi pseudo isns exist on GNU/Linux.
656 - add get_timed method to Coro::Channels.
657 - fixed Coro::Debug manpage.
658 - perl 5.11 compatbility improvement based on patch by
659 Andreas König.
660
6614.37 Sun Jan 20 11:25:23 CET 2008
662 - soften the check for an active parser for perl 5.10 (avoiding
663 "Coro::State::transfer called while parsing" in many cases).
664
6654.36 Sun Jan 13 10:53:56 CET 2008
666 - reset diehook when terminating from an async_pool as to not
667 trigger any __DIE__ handlers.
668
6694.35 Sun Jan 13 04:14:13 CET 2008
670 - "bt" debug command now displays any exceptions
671 from longmess and also skips the innermost
672 stackframes, giving more useufl output.
673 - allow backtraces in coroutines blocked in Coro::EV,
674 at a <1% speed hit.
675 - handle localising of $SIG{__WARN__} and __DIE__
676 properly (with a proper amount of dirty hacking).
677
6784.34 Sat Dec 22 17:49:53 CET 2007
679 - upgrade to EV version 2.0 API.
680
6814.33 Mon Dec 17 08:36:12 CET 2007
682 - make Coro::AIO etc. loadable in the absence of EV.
683
6844.32 Mon Dec 17 07:46:02 CET 2007
685 - majorly improved Coro::Handle's performance with Coro::EV.
686 - implemented the until now mythical Coro::BDB module.
687 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
688
6894.31 Wed Dec 5 12:32:39 CET 2007
690 - remove warn statement form Coro::Util.
691
6924.3 Tue Dec 4 20:33:14 CET 2007
693 - calls to the idle function could cause stack corruption
694 when the stack changed.
695 - do no longer rely on the presence of EV::DNS if EV is used
696 (because it is gone), but instead take avdantage of EV::ADNS
697 if available.
698 - add ($) prototypes to all functions in Coro::Storable.
699 - use a conventional (safer) idle callback in Coro::EV.
700 - do accept quickly in Coro::Debug to avoid endless loops.
701
7024.22 Fri Nov 30 16:04:04 CET 2007
703 - really use optimised versions for Event and EV in Coro::Util
704 and Coro::Handle.
705
7064.21 Sun Nov 25 10:48:59 CET 2007
707 - fix a spurious memory read.
708 - Coro::EV no longer keeps the eventloop "alive".
709
7104.2 Fri Nov 9 20:47:05 CET 2007
711 - enable/disable tracing from a new coroutine, not a pooled one.
712 - fix a memleak in Coro::Event.
713 - removed killall call from fork_eval.
714 - made sure store_fd is already loaded so that fork_eval
715 does not have to parse autoload in each subprocess.
716 - only use assembly method if -O switch is in $Config{optimize}.
717 - add (optional) Coro::EV module, so far the best event loop module
718 directly supported by Coro.
719 - if the event model is EV, use EV::DNS to resolve
720 stuff in Coro::Util.
721 - don't get confused by multiple event notifications in Coro::Handle.
722 - initial support for EV (libevent interface).
723 - require Event and EV using configure_requires, to force their existance.
724
7254.13 Wed Oct 24 07:26:45 CEST 2007
726 - add Coro::Storable::blocking_thaw.
727 - use a vastly more complicated technique to localise
728 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
729 - use a coroutine for the idle callback Coro::Event,
730 instead of running Event in the current coroutine context.
731 This also catches recursive invocations.
732 - actually report fork errors in gethostbyname and inet_aton.
733
7344.11 Thu Oct 11 02:40:24 CEST 2007
735 - port to threaded perls.
736
7374.1 Thu Oct 11 02:38:16 CEST 2007
738 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
739 be local to each coro (see Coro::State).
740 - incompatible change: for very deep reasons, cede and cede_notself
741 cannot return anything, so nothing will be returned.
742 - possibly bring back 5.10 compatibility (untested).
743 - work around stupid (and wrong) warning on 5.10 :(.
744 - overlay the saved state over the context stack. This saves
745 a few hundred bytes per coroutine on average and also
746 speeds up context switching a bit.
747 - further tune default stack sizes.
748 - (more) correctly calculate stack usage in coro_rss.
749 - Coro::Storable::blocking_* did not properly lock
750 resulting in races between coroutines.
751 - added Coro::Storable::guard.
752 - stopping to trace a coroutine could destroy the cctx of
753 an unrelated coroutine.
754 - explain the relationship between Perl and C coroutines in
755 more detail in Coro::State.
756 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
757 causing a fork per resolve. This also affected Coro::Socket.
758 - switch to a separate stack in $coro->call/eval to avoid
759 invalidating pointers.
760
7614.03 Sat Oct 6 21:24:00 CEST 2007
762 - added Coro::throw method.
763 - minor code cleanups.
764
7654.02 Sat Oct 6 02:36:47 CEST 2007
766 - fix a very minor per-coroutine memleak (a single codereference).
767 - fixed a bug where the currently in-use c context would be freed
768 prematurely (can happen only when programs change the stacksize
769 or use tracing).
770 - tracing can no longer keep a coro alive after it terminated.
771 - do static branch prediction in the common path for gcc. gives
772 about 2-5% speed improvement here.
773
7744.01 Fri Oct 5 22:10:49 CEST 2007
775 - instead of recreating *a* standard output handle we simply
776 use STDOUT, which is faster and hopefully more robust.
777
7784.0 Fri Oct 5 12:56:00 CEST 2007
779 - incompatibly changed Coro::Storable::freeze.
780 - major new feature: added Coro::Debug, for interactive coroutine
781 debugging, tracing and much more.
782 - major bug fix: unbelievable, but true: $_, $/ and many other
783 "saved" variables actually weren't being saved. This has been fixed,
784 of course, while increasing performance while losing all the save
785 flags.
786 - save flags are gone, and all the api functions dealing with them.
787 - added Coro::Semaphore::adjust.
788 - added Coro::Util::fork_eval.
789 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
790 - added Coro::killall.
791 - reduce initial stack sizes to allow for "micro-coroutines".
792 - better async_pool resource management, moved parts of async_pool
793 handling to XS (major speed improvement).
794 - actually croak before modifying important data structures.
795 - refuse to transfer while compiling.
796 - possibly support eval EXPR better now.
797 - enable assembly per default on linux+bsd x86+amd64.
798 - all internal members were renamed _something for easier subclassing.
799 - many minor tweaks.
800
8013.63 Wed May 16 14:10:06 CEST 2007
802 - implement handcoded assembly for x86/amd64 SVR ABI.
803
8043.62 Fri Apr 27 21:36:06 CEST 2007
805 - upgrade libcoro (which might set unwind info correctly).
806 - change default on linux to setjmp/longjmp.
807
8083.61 Thu Apr 19 12:36:18 CEST 2007
809 - Coro::Storable caused an endless loop when thawing invalid
810 pst's sometimes.
811 - use a Semaphore in Coro::Storable, as Storable doesn't
812 seem to be reentrant (although it is documented to
813 be threadsafe...).
814 - fix Coro::Signal to bring back the original unreliable
815 but stateful semantics.
816 - fixed a lot of typos in Coro.pm (patch submitted by David
817 Steinbrunner, which applied flawlessly).
818
8193.6 Sat Apr 14 17:13:31 CEST 2007
820 - added some bugfixes to get eg/myhttpd working again.
821 - added Coro::Storable for often-cede'ing freeze/thaw.
822 - try to do a clean exit when a coroutine calls exit
823 (EXPERIMENTAL).
824 - got rid of indirect call through _coro_init.
825 - updated the partly antique examples in eg/ to
826 work again and be a bit less magic, too.
827 - fixed Coro::Signal semantics to work as documented again.
828
8293.55 Sun Mar 25 01:20:47 CET 2007
830 - add SAVE_DEFFH to save the default filehandle and enable
831 it by default.
832 - finally move socket-operations from Coro::Socket to Coro::Handle
833 to be able to unblock foreign sockets.
834 - add Coro::State::save_also and guarded_save.
835 - add count accessor to Coro::Semaphore.
836 - add Coro::State::cctx_stacksize.
837 - just for the fun of it, do not rely on implicit context,
838 which can dramatically improve performance, but people
839 using windows-process-emulation perls do not care much about
840 performance.
841
8423.51 Sun Mar 4 14:18:04 CET 2007
843 - fixed a problem when you weakened references to Coro::State's
844 (patch by Yuval Kogman).
845
8463.501 Wed Feb 28 12:44:07 CET 2007
847 - rename some global symbols as macosx from hell redefines
848 them without asking.
849
8503.5 Tue Feb 13 20:22:53 CET 2007
851 - do AnyEvent model detection earlier, avoiding problems
852 caused by first using AnyEvent and later Coro::Event.
853 - implement and document Coro::Event event objects.
854 - fix a potential problem in Coro::Event causing crashes.
855 - initialise PL_comppad when creating a new coroutine,
856 avoids crashes on early coro destruction.
857
8583.41 Mon Jan 22 19:19:49 CET 2007
859 - readline on Coro::Handle did not support undefined $/,
860 nor did it deliver partial lines on EOF or error.
861 - implement malloc fallback for stack allocation because
862 stupid broken idiotic OSX has a stupid broken
863 idiotic fits-the-whole-os mmap "implementation" and
864 my dick feels longer if Coro is portable even to
865 obsolete platforms.
866
8673.4 Fri Jan 19 21:52:54 CET 2007
868 - remove t/09_timer.t, as it isn't really testing much
869 but was rather flaky in practise.
870 - async_pool coro would keep arguments and callback alive until
871 it was reused.
872 - cancellation of a coroutine could cause spurious idle calls
873 in cede_notself.
874
8753.3 Sat Jan 6 03:45:00 CET 2007
876 - implement $coro->on_destroy.
877 - Coro::Event blocking semantics have been changed,
878 documented and - hopefully - improved.
879 - fix nice adding, not subtracting, from priority.
880 - fix ->prio and api_is_ready (patch by Mark Hinds).
881 - fixed an assert ("... == prev__cctx->idle_te")
882 that could errronously trigger.
883 - fix various large and small memleaks.
884 - use a (hopefully) more stable cancel implementation
885 that immediately frees the coroutine data.
886 - cede/cede_notself return a status now.
887 - added Coro::guard function.
888 - added a global coroutine pool for jobs (on my machine,
889 I can create and execute 48k simple coros/s with async,
890 and 128k coros with async_pool).
891 - Coro::AIO now uses the coroutine priority as io priority.
892
8933.2 Fri Dec 22 05:07:09 CET 2006
894 - improve portability to slightly older perls.
895 - use cleaner coroutine destruction.
896 - simplify configuration for users.
897 - optionally (unrecommended) prefer perl functions over
898 their coro replacements.
899
9003.11 Tue Dec 5 13:11:24 CET 2006
901 - fixed some bogus assert's, but as perl.h disables assert even
902 without NDEBUG (thank you very much), not too many people should
903 notice (that did include myself). Andreas König noticed, though :)
904 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
905 it. Also noticed by Andreas König :)
906 - save/restore tainted status.
907 - verified to pass the testsuite on my 5.9.5.
908
9093.1 Mon Dec 4 23:03:40 CET 2006
910 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
911 - incompatible change: transfer flags are now per-state.
912 - give a better error message on deadlock.
913 - document Coro::nready.
914 - enhanced testsuite.
915
9163.01 Sun Dec 3 23:47:42 CET 2006
917 - forgot to include Coro::Timer.
918
9193.0 Sun Dec 3 22:57:25 CET 2006
920 - the "FINALLY COMPLETELY STABLE" release (coming soon:
921 the "FAMOUS LAST WORDS" release).
922 - implement a new stack sharing algorithm, which uses a stack
923 pool (size currently hardcoded).
924 - make stack sharing mandatory (it no longer uses a heuristic).
925 - eval/die no longer cause weird problems under heavy use.
926 - Coro::Event could cause livelocks if it was used but
927 no Coro::Event watchers were used.
928 - Coro::Event now uses asynccheck as prepare does not
929 check for changed watchers.
930 - Coro::Event allows multiple waiting coros and will wake up one
931 per event.
932 - Coro::Event should be cleaner and more efficient now.
933 - new utility function Coro::unblock_sub.
934 - document the sad fact that Event is no longer reentrant.
935 - putting a coroutine into the ready queue twice could under
936 some circumstances lead to stack corruption.
937 - minor incompatibility: subclassing Coro::State is supported
938 directly now without going through a _coro_state member.
939 - state/coro switching is much faster now.
940 - very minor optimisations and code/documentation cleanup.
941 - avoid problems due to compiler inlining.
942 - removed timers from Coro::Timer -> use AnyEvent instead.
943 - replaced Coro::idle coroutine by (cleaner) idle handler.
944 - updated to newest libcoro.
945 - implement enhanced support for valgrind.
946 - implement is_ready and return value for ready.
947 - removed Coro::Cont, it was a misnomer (it's generators),
948 and it was somewhat annoying to get it right. Will come back
949 if somebody asks for it :)
950 - many ->wait methods and Coro::Event could return
951 spuriously without the event having happened.
952
9532.5 Tue Nov 7 12:22:33 CET 2006
954 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
955 use AnyEvent, moved them to Coro/.
956 - added Coro::LWP which contains all the uglyness required to
957 make LWP non-blocking.
958 - should work with perl 5.9.x now (Andreas König made me do it).
959 - fixed another bug in Coro::Select when the timeout was undef.
960 - reuse PL_start_env for all coros, saves some memory per coroutine.
961 - manage PL_top_env differently, hopefully to avoid panic: top_env.
962 - timeout argument was not properly used in Coro::Socket.
963 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
964 - emulate undocumented(!) functionality of IO::Socket required
965 by LWP(!!).
966 - updated eg/lwp to work with newer lwp's.
967 - remove "FATAL: uncaught exception" prefix. Coroutines that die
968 kill the whole process, just as exceptions in the main "coroutine"
969 did already.
970
9712.1 Wed Nov 1 23:01:13 CET 2006
972 - fix a long-standing bug in Coro::Select where select with
973 zero timeout would instead change the current default filehandle.
974 - use a simpler and hopefully more robust way to clone padlists
975 (uses less memory and a perl function instead of our own).
976 - coro can now create a stack guard area on many architectures.
977 - Coro::AIO properly reexports additional functions from IO::AIO.
978 - updated libcoro with a workaround for OS X,
979 pach and testing by Michael Schwern.
980
9812.0 Tue Oct 24 05:47:17 CEST 2006
982 - support additional aio requests in Coro::AIO.
983
9841.9 (never properly released due to a glitch)
985
9861.8 Thu Feb 2 00:59:06 CET 2006
987 - applied suggested patch by SAMV to avoid problems during stupid
988 mark & sweep gc run.
989 - applied patch by Scott Walters for 5.9.3 compatibility.
990
9911.7 Tue Dec 27 01:41:58 CET 2005
992 - added Coro::AIO, a thin wrapper around IO::AIO.
993 - improved Makefile.PL explanations.
994
9951.6 Mon Dec 12 21:30:05 CET 2005
996 - additionally save PM_curpm might fix as-of-yet
997 unseen problems with regex matches being attributed to the
998 wrong package.
999 - add t/10_bugs.t, which currently checks against imho broken
1000 perls that use 0.26MB of stack space per Perl_magic_get
1001 invocation (newer linuxes) as opposed to the 0.0002MB perl
1002 normally uses.
1003 - make stacksize configurable for the ultimate debian experience.
1004
10051.51 Mon Dec 12 18:48:36 CET 2005
1006 - remove debugging warn() accidentally left in Coro::Select.
1007
10081.5 Tue Nov 29 13:32:44 CET 2005
1009 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
1010 - fix Coro::Select 'select'.
1011 - strict'ify some modules.
1012 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
1013 - use XSLoader in selected modules.
1014 - remove some 5.6 compatibility cruft.
2 1015
31.4 Tue Sep 6 00:11:05 CEST 2005 10161.4 Tue Sep 6 00:11:05 CEST 2005
4 - libcoro did not take into account the trampoline on amd64, 1017 - libcoro did not take into account the trampoline on amd64,
5 when 'l'inux method was used. 1018 when 'l'inux method was used.
6 1019

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