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Comparing Coro/Changes (file contents):
Revision 1.173 by root, Mon Dec 4 03:48:16 2006 UTC vs.
Revision 1.593 by root, Mon Jul 2 23:16:48 2012 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: transfer flags must be per state 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: better (earlier) error messages on broken transfer's 4TODO: channel->maxsize(newsize)?
5TODO: http://www.microsoft.com/msj/archive/s2ce.aspx
6TODO: __GCC_HAVE_DWARF2_CFI_ASM
5 7
63. 8 - use fd -1 in mmap.
9 - cast I32 to int in error message printf.
10 - warn about broken so-called "hardened" kernels.
11
126.08 Fri Apr 13 12:05:47 CEST 2012
13 - be more aggressive about exiting like perl does - formerly,
14 exiting from the non-main thread would not execute END blocks.
15
166.07 Fri Nov 11 21:21:48 CET 2011
17 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
18 - update ecb.h.
19
206.06 Mon Aug 8 23:59:48 CEST 2011
21 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
22 backend, which is an order of magnitude slower. unfortunately, cygwins
23 pthread implementation isn't very complete either, so allocate the stack
24 twice just to be sure.
25 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
26 in its ithreaded perl - best recompile cygwin and use the 'w'indows
27 backend for much better performance. also disable ithreads for
28 even better performance...).
29
306.05 Thu Aug 4 21:36:36 CEST 2011
31 - blush, condvar values would not be propagated from send to recv anymore
32 (reported by Chip Salzenberg).
33 - use exponential increase for the readline buffer length in
34 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
35
366.04 Wed Aug 3 17:15:45 CEST 2011
37 - use even more efficient and more compatible condvars for
38 compatibility to AnyEvent 6.x :)
39 - more inconsequential ecb.h updates.
40
416.03 Wed Aug 3 11:41:30 CEST 2011
42 - change how Coro patches AnyEvent condvars for compatibility to
43 AnyEvent 6.x.
44 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
45 hasn't been included.
46
476.02 Wed Jul 13 04:35:19 CEST 2011
48 - "improve portability to Gentoo" - gentoo manages to put perl variables
49 in memory areas that are farther than 2gb apart, which the jit couldn't
50 handle and barfed. now it's just a bit slower on gentoo and similar
51 systems.
52
536.01 Sun Jul 3 12:31:14 CEST 2011
54 - workarounds are good, but the test for whether pthreads are used
55 was not good. thisone should be better.
56 - check differently whether gcc generates cfi instructions itself.
57
586.0 Wed Jun 29 19:43:35 CEST 2011
59 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
60 destroyed and cleaned up automatically (e.g. async { schedule }).
61 - implement a JIT compiler for part of the thread switch code,
62 which gives a 50% speed improvement on threaded perls, and
63 about 4% on non-thraeded perls (so threaded perls now finally
64 reach about half the speed of non-threaded perls).
65 - slightly modernise Coro::Intro, add section about rouse functions.
66 - avoid DEFSV and ERRSV, giving another 10% improvement
67 in thread switching.
68 - Coro::State->is_destroyed is now called is_zombie.
69 - implement a Coro->safe_cancel method that might fail, but
70 cancels in a "safer" way if it succeeds.
71 - add preliminary support for DEBUGGING perls.
72 - get rid of two hash-accesses when initialising a new Coro - this
73 speeds up coro creation by almost a factor of two.
74 - croak when a coro that is being cancelled tries to block
75 (e.g. while executing a guard block), instead of crashing or
76 deadlocking.
77 - use a more robust and also faster method to identify Coro::State
78 objects - speeds up everything a bit.
79 - implement Coro->cancel in XS for a 20% speed improvement, and to
80 be able to implement mutual cancellation.
81 - speed up context switches by a percent or two by more efficiently
82 allocating context stack entries.
83 - implement Coro->join and Coro->on_destroy in XS for a speedup and
84 a reduction in memory use.
85 - cancelling a coro while it itself is cancelling another coro is
86 now supported and working, instead of triggering an assertion.
87 - be a bit more crash-resistant when calling (buggy) on_destroy
88 callbacks (best effort).
89 - move on_destroy into the slf_frame, to allow extension slf
90 functions to have destructors.
91 - get rid if coro refcounting - simply crash in other interpreter
92 threads by nulling the pointers on clone.
93 - simplify warn/die hook handling when loading Coro - the convoluted
94 logic seems to be no longer neccessary.
95 - use libecb instead of our own home-grown gcc hacks.
96 - document alternatives to Coro::LWP. Please use them :)
97 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
98 sigaltstack. Really. wine suffers from it, erlang suffers from it,
99 and it's known since at least 2006.
100
1015.372 Wed Feb 23 06:14:30 CET 2011
102 - apparently mingw doesn't provide a working gettimeofday, try to
103 work around that by relying on Time::HiRes (indirectly brought to
104 my attention by Max Maischein).
105 - fix some portability issues when Time::HiRes was used.
106
1075.371 Mon Feb 21 14:36:08 CET 2011
108 - backport to windows process emulation code again.
109
1105.37 Sat Feb 19 07:49:44 CET 2011
111 - add a big "Coro thread life cycle" section to "man Coro".
112 - try a tentative workaround against the breakage that 5.13 has
113 introduced without depreciation period. sigh.
114 - no longer use Time::HiRes if gettimeofday is available, which
115 saves quite a lot of memory.
116
1175.36 Sun Feb 13 05:33:41 CET 2011
118 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
119 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
120 method call.
121 - undocument Coro::Timer::sleep and obsolete whole module.
122 - optimise Coro::Timer::timeout memory and cpu usage.
123 - slightly updated Coro::Intro for recent changes.
124 - do not initialise PL_dirty anymore.
125
1265.25 Thu Nov 11 01:08:39 CET 2010
127 - try a different approach on netbsd - netbsd 5 finally has marginally
128 working pthreads, but still broken ucontext/sigaltstack.
129 - openbsd 4.8 finally got their act together, Coro works out of the box
130 with asm, setjmp and pthreads (no change, just informational).
131
1325.24 Sat Oct 23 11:27:12 CEST 2010
133 - port to the EV 4.0 API.
134 - work around bugs in mingw32, making strawberry perl work
135 out of the box.
136 - correctly modify Coro::AIO function prototypes
137 so that they reflect the "no optional parameters" rule.
138 - "ported" libcoro to C++.
139
1405.23 Mon May 17 18:50:42 CEST 2010
141 - be more resistant to ordering changes when initialising
142 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
143 Waldorf).
144 - document that perl 5.12 deliberately removed support for cloning.
145
1465.22 Wed Apr 14 03:55:35 CEST 2010
147 - correctly return udnef on errors in Coro::Handle::read/write
148 (testcase by Marc Mims).
149 - convert Coro::Util into a "perl compatibility wrapper" - the functions
150 are less useful now, but are drop-in replacements for existing
151 functions, listing better alternatives in the documentation. This also
152 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
153 with Coro::Util::inet_aton.
154 - do not override $Coro::idle unconditionally in Coro.pm, as other
155 modules could have provided their own idle coro already
156 (for exmaple, Coro::AnyEvent).
157 - fix Coro::Util::gethost* functions.
158 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
159
1605.21 Wed Dec 16 07:19:51 CET 2009
161 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
162 together.
163 - add some examples on how to combine other event loops with Coro in
164 Coro::AnyEvent, and how to run it (and not to block). Seems to be
165 the most common source of confusion.
166 - try to catch people naively blocking in an event callback.
167 - work around the perl filehandle bug issue in conjunction with
168 older common::sense (as indirectly pointed out by ZSystem).
169 - clarify the "not from signal handlers" section.
170
1715.2 Sun Oct 4 14:54:24 CEST 2009
172 - Coro::Storable destroyed the prototypes of the functions it wrapped.
173 - export rouse_cb and rouse_wait by default now.
174 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
175 - new method $state->swap_sv.
176 - added section on "windows process emulation" to the manpage,
177 after a not-so-fruitful (nor-friendly) "discussion" with chip
178 salzenberg (discussion implies arguments, but his only arguments
179 were ad-hominems, one wonders why he started it in the first
180 place). I hope this explains it well enough for him to understand,
181 and maybe well enough for others to understand.
182 - use common::sense everywhere now.
183 - idle callbacks are no longer supported, use idle coros instead.
184 - print a thread listing when a deadlock is detected.
185
1865.17 Sat Aug 22 23:09:31 CEST 2009
187 - work around a bug in the perl debugger causing crashes
188 when running under the debugger by marking _pool_handler as nodebug.
189 - speed up Coro::async considerably.
190 - try some hacks to get netbsd to work "more often" - their broken
191 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
192 - convert Coro to AE 5.0 API.
193
1945.162 Tue Jul 28 04:04:03 CEST 2009
195 - perl 5.8.2 is now minimum requirement.
196 - skip t/19_handle.t on broken windows perls.
197
1985.161 Wed Jul 22 04:47:38 CEST 2009
199 - Coro::AnyEvent::poll could have a different prototype when EV was
200 used as backend (analyzed by Tatsuhiko Miyagawa).
201 - Coro::AnyEvent errornously initialised the event loop when loaded,
202 not on demand.
203 - try to workaround rare */t/01_unblock.t failures.
204
2055.16 Tue Jul 21 01:44:37 CEST 2009
206 - Coro::AnyEvent failed to hook into the event loop
207 when no threads had been readied between detecting
208 the event loop and actually running it.
209 - considerably speed up Coro::Select by taking avdantage
210 of AnyEvent > 4.8 and some other optimisations.
211 - implement paragraph readline mode in Coro::Handle
212 (based on patches by Zsbán Ambrus).
213 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
214 and analyzed by Yasuhiro MATSUMOTO).
215 - clarified libcoro license and copyright.
216 - someone stole my EXTRA_META!!!
217 - implement Coro::Select::patch_pp_sselect and it's brother,
218 for hardcode select overriding.
219
2205.151 Mon Jul 6 05:41:57 CEST 2009
221 - backport to windows process emulation code again (patch by
222 Yasuhiro MATSUMOTO).
223 - slightly update Coro::MakeMaker.
224
2255.15 Tue Jun 30 10:28:06 CEST 2009
226 - deprecate Coro::Socket, document how to get ipv6 support via
227 AnyEvent::Socket instead.
228 - implement signal->wait ($cb) interface, similar to semaphores.
229 - work around SvOK not supporting getmagic, so we have to getmagic
230 to test for undef :/ (reported by Matthias Waldorf).
231 - load Coro::AnyEvent in all modules using AnyEvent.
232 - work around perl corrupting our internal data structures,
233 reported by Tokuhiro Matsuno.
234 - enable per-coroutine real and cpu time gathering
235 (Coro::State::enable_times).
236
2375.14 Wed Jun 24 01:37:48 CEST 2009
238 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
239 as this seems to have been a difficult concept (poll, sleep, idle,
240 idle_upto).
241 - add Coro::AnyEvent::readable/writable functions.
242 - clarify Coro::EV/Event/AnyEvent manpages.
243 - free per-thread global scalars in the thread calling ->cancel, to
244 avoid crashes when $_, $@ etc., are magical but some of those
245 had already been freed.
246 - "unexperimentalise" the callback interface for Coro::Semaphore.
247 - speed up ready queue management/context switching by using a linked
248 list instead of an array (~5-10%).
249 - implement "watch" command in Coro::Debug shells.
250 - for fun, implement time-slicing as an example in the manpage.
251 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
252 Coro::Event, use the normal AnyEvent handling instead of dieing
253 (the same is true for Coro::Handle).
254 - properly document Coro::EV::timed_io_once.
255 - avoid unneccessary ->cancel calls in Coro::Handle.
256 - maybe make it work on mingw32 with win32 backend
257 (based on patch by Yasuhiro Matsumoto).
258
2595.132 Fri May 29 09:00:39 CEST 2009
260 - do not keep a reference to the argument itself in
261 Coro::Semaphore::guard, as it could change later.
262 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
263 should support a prepare callback.
264
2655.131 Mon Mar 16 23:20:37 CET 2009
266 - implement and document Coro->suspend, Coro->resume.
267 - fix Coro::Select implementation to not (often) close
268 the passed file descriptors (testcase provided by pippijn).
269
2705.13 Mon Dec 15 21:51:42 CET 2008
271 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
272 - don't set diehook to C<undef> but instead to NULL, to avoid
273 spurious warnings.
274 - fix a lot of bugs in Coro::SemaphoreSet.
275 - Coro::SemaphoreSet will less often create a semaphore needlessly.
276 - add Coro::SemaphoreSet::count and wait methods.
277 - take advantage of the new Guard module.
278 - deprecate Coro::guard.
279 - try to fix the dreaded 01_unblock tests once more. I hate it when
280 testsuites need more fixing than the code they are supposed to test.
281 - croak in more cases when a required callback isn't resolvable.
282 - fix some minor issues in Coro::State->call/eval.
283 - use current coroutine context instead of a temporary one
284 when temporarily switching to another coroutine.
285 - do not call C-level on_destroy handlers during global destruction,
286 to avoid needless segfaults.
287
2885.12 Sun Dec 7 13:30:38 CET 2008
289 - add default config for MirOS, which seems to be a bug-to-bug
290 compatible fork of openbsd ("world domination by releasing
291 openbsd cvs before the openbsd folks do it" or so :).
292 - free_padlist did destroy the names pad, not good, but didn't
293 seem to bother perl - this could fix issues such as eval ""
294 inside a function called from multiple coroutines.
295 - use a different method to detect destruction time.
296 - be more careful when freeing padlists just before global
297 destruction.
298 - fixed and expanded the call/cc example.
299 - renamed _terminate to _coro_run.
300 - new method Coro::Channel->shutdown.
301 - try pthreads on openbsd <4.4 (broken sigaltstack, will
302 pthreads fare better?).
303 - be less picky about destroying "a" running coroutine.
304
3055.11 Tue Nov 25 21:49:05 CET 2008
306 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
307 working code with failed assertions, introducing more bugs than
308 it fixes, requiring elaborate workarounds :(
309
3105.1 Mon Nov 24 08:54:59 CET 2008
311 - wrote a small introductory tutorial - Coro::Intro.
312 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
313 - Coro::Select did errornously dup the file descriptors
314 and didn't work with all AnyEvent backends.
315 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
316 LWP data transfers.
317 - disassociate c contexts from coro objects - this is agruably more
318 correct, but mostly allows sharing of cctxs between coro and state
319 objects, for added memory savings and speed increases.
320 - bumped $Coro::POOL_RSS up to 32kb by default.
321 - no longer set the optype to OP_CUSTOM, as B::* understandably
322 doesn't like this very much (and we *are* a type of entersub).
323 - implement state cloning, just to prove that call/cc can be done.
324 - automatically load Coro::AnyEvent in Coro::Handle.
325 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
326 do not have this method (and don't need it either).
327 - speed up generic anyevent methods in Coro::Handle by using rouse
328 callbacks.
329 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
330 others. It also makes the debugger happier, as you can trace
331 through the idle threads now.
332 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
333 - eg/event was pretty broken.
334 - better 5.8.6 compatibility.
335
3365.0 Thu Nov 20 10:35:05 CET 2008
337 - NEW ARCHITECTURE: use the latest 4.x version if you experience
338 stability issues.
339 - bump API version to 7 - all dependents must be recompiled.
340 - removed timed_* functions - they were not being used anyways
341 and should be replaced by a more generic mechanism -
342 and were annoying to support anyways :)
343 - removed SemaphoreSet's waiter method - use sem method instead.
344 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
345 - async_pool did free a scalar value twice
346 ("Attempt to unreference...").
347 - fix a longstanding bug where calling terminate on a coro that
348 was waiting for a semaphore that was just becoming available
349 would cause a deadlock (semaphore would get into a state where
350 it was available but waiters were still blocked).
351 - calling throw on a coroutine that is waiting for a semaphore will
352 no longer make it acquire the semaphore (and thus leak a count).
353 - perl's process emulation is now not even theoretically supported
354 anymore.
355 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
356 conversion of callback-style to blocking-style.
357 - new methods $coro->schedule_to and ->cede_to, to specifically
358 schedule or cede to a specific coroutine.
359 - new function Coro::Semaphore::wait.
360 - use named constants in Coro::Channel (Richard Hundt).
361 - directly patch the entersub opcode calling SLF functions (cede,
362 transfer and so on). this does speed up context switching, but
363 more importanly, it frees us from the hardcoded behaviour of
364 entersub, so we might actually be able to return something from
365 those functions and atcually create new ones.
366 - take advantage of __builtin_frame_address on gcc.
367 - expose THX in coroapi (not sure whether this was a wise decision,
368 as "threaded" perls are running at half speed anyways).
369 - implement execute_slf (schedule-like-function) interface that makes
370 it possible to implement schedule-like-functions in XS.
371 - use new SLF interface to massively speed up Coro::EV by roughly a
372 factor of two.
373 - used new SLF interface to massively speed up Coro::Semaphore by a
374 factor of three.
375 - used new SLF interface to speed up Coro::AIO by roughly a factor of
376 four and reduce its memory usage considerably.
377 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
378 for a nice speedup and vastly more correct behaviour. Also implement
379 a new method "sem" to get at the underlying semaphore object.
380 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
381 (in comparison) 20-40% speedup.
382 - used new SLF interface to reimplement Coro::Signal gaining
383 some unknown (because I was too lazy), but certain, speedup, and also
384 making signals reliable for the first time.
385 - used new SLF interface and other optimisations to speed up async_pool
386 by a factor of two. It also doesn't rely on perl's exception mechanism
387 to exit anymore. The overhead for terminating an async_pool, coro over
388 a normal async is now very small.
389 - sped up coroutine creation/destruction by 40%.
390 - forgot to include Coro/libcoro/README in the dist for all these years.
391 - work around a freebsd pthreads bug (manual testcancel is required as
392 pthread_cond_wait isn't a cancellation point on freebsd).
393 - use new rouse functions to speed up and simplify Coro::BDB.
394 - make "prefer perl native functions" work with threaded perls.
395 - condense Coro::Debug ps output, hint at v and w flags.
396 - (libcoro) lots of minor cleanups and portability improvements.
397
3984.914 Wed Nov 19 12:54:18 CET 2008
399 - fix a disastrous bug in the readline optimisation
400 introduced in 4.801.
401
4024.913 Sat Nov 15 07:58:28 CET 2008
403 - async_pool did free a scalar value twice
404 ("Attempt to unreference...").
405
4064.912 Thu Nov 13 18:31:23 CET 2008
407 - minor cleanups.
408 - use much larger stacks on linux and perl < 5.8.8.
409 - Coro::Debug::new_unix_server did not unlink the socket
410 when destroyed.
411
4124.911 Tue Nov 11 04:26:17 CET 2008
413 - "port" to threaded perls.
414
4154.91 Mon Nov 10 05:36:38 CET 2008
416 - the ->throw exception object no longer leaks.
417 - creating a new cctx leaked a scopestack entry (memleak).
418 - new coroutines didn't get created with a zero flags field
419 (unknown impact).
420 - calling ->throw on a not-yet-started coroutine should now work
421 instead of being ignored.
422 - ->throw is now supported on Coro::State objects.
423 - clean up cctx creation code a bit.
424 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
425
4264.9 Sat Nov 8 17:45:27 CET 2008
427 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
428 - (libcoro) no longer leak threads in the experimental pthread backend,
429 also speed it up considerably.
430 - (libcoro) do not rely on makecontext passing void *'s unscathed.
431 - fix compiletime dependencies on libcoro in the Makefile.
432 - cctx_count wasn't always updated properly.
433 - Coro::State::cctx_stacksize wasn't applied correctly.
434 - new function Coro::State::cctx_max_idle.
435 - the default max number of idle C contexts is now 4.
436 - (libcoro) try harder to get _setjmp/_longjmp.
437 - (libcoro) cleanup and extend the libcoro API to officially
438 allow the creation of empty source contexts.
439 - very experimental workaround for the totally broken netbsd platform.
440 - tried to hack around openbsd bugs.
441
4424.804 Wed Nov 5 16:36:00 CET 2008
443 - Coro::Debug::new_unix_server would not create a non-blocking listening
444 socket, sometimes causing freezes.
445 - (libcoro) fix misaligned stack points for setjmp and assembly
446 methods, which can cause crashes on x86/x86_64 with a sufficiently
447 aggressive compiler.
448 - new function: Coro::Debug::new_tcp_server.
449 - move ->throw into the Coro class because it only works on coro objects.
450
4514.803 Mon Nov 3 17:16:12 CET 2008
452 - (libcoro) use a global asm statement to become independent of gcc
453 otpimisations for CORO_ASM (thanks to pippijn for the idea).
454 - try to workaround yet another broken bsd, this time dragonfly.
455
4564.802 Thu Oct 30 10:56:12 CET 2008
457 - support -fno-omit-frame-pointer on x86 with the assembly method.
458 - tune 01_unblock.t tests a bit.
459
4604.801 Wed Oct 22 18:33:37 CEST 2008
461 - improve readline speed for very long "lines".
462 - backport to 5.8.8.
463
4644.8 Thu Oct 2 13:34:40 CEST 2008
465 - new function Coro::AIO::aio_wait.
466 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
467 - greatly speed up and reduce memory usage of Coro::AIO requests.
468 - implement some other µ-optimisations.
469
4704.749 Mon Sep 29 14:40:12 CEST 2008
471 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
472
4734.748 Sat Sep 27 14:03:19 CEST 2008
474 - implement, but do not document, PerlIO::cede(granularity).
475 - Coro::Storable forgot to wrap Storable::pstore.
476 - work around the multitude of leaks and memory corruption
477 bugs in PerlIO::via by using our own C-level perliol. As a side
478 effect, Coro::Storable is now much, much, much faster.
479
4804.747 Tue Sep 23 01:59:41 CEST 2008
481 - fix a per-cv memleak (one empty array was leaked per
482 code reference).
483 - avoid a crash in coro->call|rss when the coroutine was already
484 destroyed (most noticably when using Coro::Debug::ps :)
485 - also protect *Storable::FILE.
486 - push up default storable granularity to 20ms.
487
4884.746 Sun Sep 21 03:22:20 CEST 2008
489 - be more insistent on locking Storable against reentrancy
490 in Coro::Storable.
491 - move swap_def?v and throw to Coro::State, as documented.
492
4934.745 Thu Jul 24 00:14:38 CEST 2008
494 - remove debugging code related to MgPV_nolen_const, also try to
495 make it compile with perl 5.8.6 (yes, apple apparently loves
496 outdated software). Reported by John S.
497
4984.744 Tue Jul 8 22:06:35 CEST 2008
499 - correctly provide default DIE/WARN handlers as documented.
500 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
501 implementations inside perl work fine for us.
502
5034.743 Mon Jun 16 00:21:57 CEST 2008
504 - when using Coro::EV without running EV::loop it could
505 result in busy-waiting for events, this has been fixed.
506 - reduce codesize and improve performance by using EV_DEFAULT_UC.
507
5084.742 Sat May 31 14:10:21 CEST 2008
509 - implement a workaround for (some) perl <5.8.8 versions.
510 - require EV 3.3+.
511
5124.741 Fri May 30 23:33:09 CEST 2008
513 - tell netbsd how utterly broken their imitation of an OS is
514 and refuse to build by default if pthreads are in use.
515 - switch to "s" method on all bsd's by default, as their ucontext
516 stuff seems just too broken.
517 - fix a bug in Coro::Select.
518
5194.74 Thu May 29 20:05:31 CEST 2008
520 - do not test Coro::LWP for lack of dependencies.
521 - do not test Coro::Select for lack of working perls.
522
5234.73 Thu May 29 2008
524 - fix a bug in Coro::EV which would cause it to block despite
525 there being runnable coroutines.
526 - sprinkle "no warnings" freely over everything, also suppress
527 warnings for some other modules.
528 - fix typo in WSAEWOULDBLOCK.
529
5304.72 Sun May 25 05:14:36 CEST 2008
531 - tweak META.yaml a bit, unfortunately, there is no documented way
532 to have optional dependencies with CPAN. doh :(
533 - avoid running some tests on windows because they would fail due to
534 perl bug (broken fork, broken pipes...).
535 - work around perl on windows bugs where perl returns undocumented
536 error codes for sysread, syswrite etc. by taking advantage
537 of AnyEvent's workaround for that problem.
538 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
539 a common perl implementation bug on windows.
540 - use unix domain sockets in testsuite to work around
541 common perl implementation bugs on widows (they are emulated by
542 tcp sockets on windows. ugh.)
543
5444.71 Sat May 24 20:01:27 CEST 2008
545 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
546 - take advantage of async name resolution of AnyEvent::Util.
547 - work around brutal inet_aton override in Coro::LWP.
548 - take advantage of the readyhook in Coro::EV, for smoother
549 scheduling.
550
5514.7 Sun May 11 00:32:19 CEST 2008
552 - completely reworked the Coro manpage.
553 - added Coro::AnyEvent, generic event loop integration.
554 - implement cancel, ready and kill commands in Coro::Debug.
555 - document find_coro in Coro::Debug.
556 - incompatible change: rename has_stack to has_cctx.
557 - Coro::AIO and Coro::BDB no longer force event model detection,
558 use AnyEvent::AIO and AnyEvent::BDB.
559
5604.6 Sat Apr 26 10:05:14 CEST 2008
561 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
562 by the Coro module. It was a mistake to have it in the first place.
563 - (experimental) support for activestate perl 5.10 (method "w").
564 - (experimental) support for strawberry perl (method "a").
565 - coro_sigelem_set did not return a value although it had to,
566 actual impact unknown.
567
5684.51 Mon Apr 14 13:28:27 CEST 2008
569 - make it compile again on 5.8.
570
5714.50 Thu Apr 10 09:43:17 CEST 2008
572 - I did it twice! (see 4.49).
573
5744.49 Sun Apr 6 21:23:31 CEST 2008
575 - grr, instead of compiling the recent changes on 5.10 only they
576 were compiled on 5.8 only.
577
5784.48 Sun Apr 6 20:36:46 CEST 2008
579 - allow coroutine switches during eval's under 5.10.x, as it seems
580 the parser is a per-interpreter option now, so this is safe
581 (this might fix the odd crashing bug).
582 - drop support for 5.9.x versions: they are dead, jim.
583
5844.47 Sun Apr 6 00:37:52 CEST 2008
585 - force cctx allocation on API calls: we know we need to force one
586 and gcc actually manages to confuse our heuristic nowadays,
587 leading to crashes and worse.
588 - document force_cctx.
589
5904.46 Fri Apr 4 22:05:43 CEST 2008
591 - upgrade libcoro, resulting in pthread-backend (which was only created
592 to fulfill the rules of the programming languages shootout).
593
5944.45 Thu Mar 13 11:55:36 CET 2008
595 - fix a file leaking bug in eg/mhyttpd that would allow
596 downloading of any file (reported by oesi).
597 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
598 (also add testcase).
599 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
600 apparently having loads of fun with that).
601 - implement $state->swap_defsv, ->swap_defav and document ->throw.
602
6034.4 Wed Feb 13 16:44:29 CET 2008
604 - only assume .cfi pseudo isns exist on GNU/Linux.
605 - add get_timed method to Coro::Channels.
606 - fixed Coro::Debug manpage.
607 - perl 5.11 compatbility improvement based on patch by
608 Andreas König.
609
6104.37 Sun Jan 20 11:25:23 CET 2008
611 - soften the check for an active parser for perl 5.10 (avoiding
612 "Coro::State::transfer called while parsing" in many cases).
613
6144.36 Sun Jan 13 10:53:56 CET 2008
615 - reset diehook when terminating from an async_pool as to not
616 trigger any __DIE__ handlers.
617
6184.35 Sun Jan 13 04:14:13 CET 2008
619 - "bt" debug command now displays any exceptions
620 from longmess and also skips the innermost
621 stackframes, giving more useufl output.
622 - allow backtraces in coroutines blocked in Coro::EV,
623 at a <1% speed hit.
624 - handle localising of $SIG{__WARN__} and __DIE__
625 properly (with a proper amount of dirty hacking).
626
6274.34 Sat Dec 22 17:49:53 CET 2007
628 - upgrade to EV version 2.0 API.
629
6304.33 Mon Dec 17 08:36:12 CET 2007
631 - make Coro::AIO etc. loadable in the absence of EV.
632
6334.32 Mon Dec 17 07:46:02 CET 2007
634 - majorly improved Coro::Handle's performance with Coro::EV.
635 - implemented the until now mythical Coro::BDB module.
636 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
637
6384.31 Wed Dec 5 12:32:39 CET 2007
639 - remove warn statement form Coro::Util.
640
6414.3 Tue Dec 4 20:33:14 CET 2007
642 - calls to the idle function could cause stack corruption
643 when the stack changed.
644 - do no longer rely on the presence of EV::DNS if EV is used
645 (because it is gone), but instead take avdantage of EV::ADNS
646 if available.
647 - add ($) prototypes to all functions in Coro::Storable.
648 - use a conventional (safer) idle callback in Coro::EV.
649 - do accept quickly in Coro::Debug to avoid endless loops.
650
6514.22 Fri Nov 30 16:04:04 CET 2007
652 - really use optimised versions for Event and EV in Coro::Util
653 and Coro::Handle.
654
6554.21 Sun Nov 25 10:48:59 CET 2007
656 - fix a spurious memory read.
657 - Coro::EV no longer keeps the eventloop "alive".
658
6594.2 Fri Nov 9 20:47:05 CET 2007
660 - enable/disable tracing from a new coroutine, not a pooled one.
661 - fix a memleak in Coro::Event.
662 - removed killall call from fork_eval.
663 - made sure store_fd is already loaded so that fork_eval
664 does not have to parse autoload in each subprocess.
665 - only use assembly method if -O switch is in $Config{optimize}.
666 - add (optional) Coro::EV module, so far the best event loop module
667 directly supported by Coro.
668 - if the event model is EV, use EV::DNS to resolve
669 stuff in Coro::Util.
670 - don't get confused by multiple event notifications in Coro::Handle.
671 - initial support for EV (libevent interface).
672 - require Event and EV using configure_requires, to force their existance.
673
6744.13 Wed Oct 24 07:26:45 CEST 2007
675 - add Coro::Storable::blocking_thaw.
676 - use a vastly more complicated technique to localise
677 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
678 - use a coroutine for the idle callback Coro::Event,
679 instead of running Event in the current coroutine context.
680 This also catches recursive invocations.
681 - actually report fork errors in gethostbyname and inet_aton.
682
6834.11 Thu Oct 11 02:40:24 CEST 2007
684 - port to threaded perls.
685
6864.1 Thu Oct 11 02:38:16 CEST 2007
687 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
688 be local to each coro (see Coro::State).
689 - incompatible change: for very deep reasons, cede and cede_notself
690 cannot return anything, so nothing will be returned.
691 - possibly bring back 5.10 compatibility (untested).
692 - work around stupid (and wrong) warning on 5.10 :(.
693 - overlay the saved state over the context stack. This saves
694 a few hundred bytes per coroutine on average and also
695 speeds up context switching a bit.
696 - further tune default stack sizes.
697 - (more) correctly calculate stack usage in coro_rss.
698 - Coro::Storable::blocking_* did not properly lock
699 resulting in races between coroutines.
700 - added Coro::Storable::guard.
701 - stopping to trace a coroutine could destroy the cctx of
702 an unrelated coroutine.
703 - explain the relationship between Perl and C coroutines in
704 more detail in Coro::State.
705 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
706 causing a fork per resolve. This also affected Coro::Socket.
707 - switch to a separate stack in $coro->call/eval to avoid
708 invalidating pointers.
709
7104.03 Sat Oct 6 21:24:00 CEST 2007
711 - added Coro::throw method.
712 - minor code cleanups.
713
7144.02 Sat Oct 6 02:36:47 CEST 2007
715 - fix a very minor per-coroutine memleak (a single codereference).
716 - fixed a bug where the currently in-use c context would be freed
717 prematurely (can happen only when programs change the stacksize
718 or use tracing).
719 - tracing can no longer keep a coro alive after it terminated.
720 - do static branch prediction in the common path for gcc. gives
721 about 2-5% speed improvement here.
722
7234.01 Fri Oct 5 22:10:49 CEST 2007
724 - instead of recreating *a* standard output handle we simply
725 use STDOUT, which is faster and hopefully more robust.
726
7274.0 Fri Oct 5 12:56:00 CEST 2007
728 - incompatibly changed Coro::Storable::freeze.
729 - major new feature: added Coro::Debug, for interactive coroutine
730 debugging, tracing and much more.
731 - major bug fix: unbelievable, but true: $_, $/ and many other
732 "saved" variables actually weren't being saved. This has been fixed,
733 of course, while increasing performance while losing all the save
734 flags.
735 - save flags are gone, and all the api functions dealing with them.
736 - added Coro::Semaphore::adjust.
737 - added Coro::Util::fork_eval.
738 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
739 - added Coro::killall.
740 - reduce initial stack sizes to allow for "micro-coroutines".
741 - better async_pool resource management, moved parts of async_pool
742 handling to XS (major speed improvement).
743 - actually croak before modifying important data structures.
744 - refuse to transfer while compiling.
745 - possibly support eval EXPR better now.
746 - enable assembly per default on linux+bsd x86+amd64.
747 - all internal members were renamed _something for easier subclassing.
748 - many minor tweaks.
749
7503.63 Wed May 16 14:10:06 CEST 2007
751 - implement handcoded assembly for x86/amd64 SVR ABI.
752
7533.62 Fri Apr 27 21:36:06 CEST 2007
754 - upgrade libcoro (which might set unwind info correctly).
755 - change default on linux to setjmp/longjmp.
756
7573.61 Thu Apr 19 12:36:18 CEST 2007
758 - Coro::Storable caused an endless loop when thawing invalid
759 pst's sometimes.
760 - use a Semaphore in Coro::Storable, as Storable doesn't
761 seem to be reentrant (although it is documented to
762 be threadsafe...).
763 - fix Coro::Signal to bring back the original unreliable
764 but stateful semantics.
765 - fixed a lot of typos in Coro.pm (patch submitted by David
766 Steinbrunner, which applied flawlessly).
767
7683.6 Sat Apr 14 17:13:31 CEST 2007
769 - added some bugfixes to get eg/myhttpd working again.
770 - added Coro::Storable for often-cede'ing freeze/thaw.
771 - try to do a clean exit when a coroutine calls exit
772 (EXPERIMENTAL).
773 - got rid of indirect call through _coro_init.
774 - updated the partly antique examples in eg/ to
775 work again and be a bit less magic, too.
776 - fixed Coro::Signal semantics to work as documented again.
777
7783.55 Sun Mar 25 01:20:47 CET 2007
779 - add SAVE_DEFFH to save the default filehandle and enable
780 it by default.
781 - finally move socket-operations from Coro::Socket to Coro::Handle
782 to be able to unblock foreign sockets.
783 - add Coro::State::save_also and guarded_save.
784 - add count accessor to Coro::Semaphore.
785 - add Coro::State::cctx_stacksize.
786 - just for the fun of it, do not rely on implicit context,
787 which can dramatically improve performance, but people
788 using windows-process-emulation perls do not care much about
789 performance.
790
7913.51 Sun Mar 4 14:18:04 CET 2007
792 - fixed a problem when you weakened references to Coro::State's
793 (patch by Yuval Kogman).
794
7953.501 Wed Feb 28 12:44:07 CET 2007
796 - rename some global symbols as macosx from hell redefines
797 them without asking.
798
7993.5 Tue Feb 13 20:22:53 CET 2007
800 - do AnyEvent model detection earlier, avoiding problems
801 caused by first using AnyEvent and later Coro::Event.
802 - implement and document Coro::Event event objects.
803 - fix a potential problem in Coro::Event causing crashes.
804 - initialise PL_comppad when creating a new coroutine,
805 avoids crashes on early coro destruction.
806
8073.41 Mon Jan 22 19:19:49 CET 2007
808 - readline on Coro::Handle did not support undefined $/,
809 nor did it deliver partial lines on EOF or error.
810 - implement malloc fallback for stack allocation because
811 stupid broken idiotic OSX has a stupid broken
812 idiotic fits-the-whole-os mmap "implementation" and
813 my dick feels longer if Coro is portable even to
814 obsolete platforms.
815
8163.4 Fri Jan 19 21:52:54 CET 2007
817 - remove t/09_timer.t, as it isn't really testing much
818 but was rather flaky in practise.
819 - async_pool coro would keep arguments and callback alive until
820 it was reused.
821 - cancellation of a coroutine could cause spurious idle calls
822 in cede_notself.
823
8243.3 Sat Jan 6 03:45:00 CET 2007
825 - implement $coro->on_destroy.
826 - Coro::Event blocking semantics have been changed,
827 documented and - hopefully - improved.
828 - fix nice adding, not subtracting, from priority.
829 - fix ->prio and api_is_ready (patch by Mark Hinds).
830 - fixed an assert ("... == prev__cctx->idle_te")
831 that could errronously trigger.
832 - fix various large and small memleaks.
833 - use a (hopefully) more stable cancel implementation
834 that immediately frees the coroutine data.
835 - cede/cede_notself return a status now.
836 - added Coro::guard function.
837 - added a global coroutine pool for jobs (on my machine,
838 I can create and execute 48k simple coros/s with async,
839 and 128k coros with async_pool).
840 - Coro::AIO now uses the coroutine priority as io priority.
841
8423.2 Fri Dec 22 05:07:09 CET 2006
843 - improve portability to slightly older perls.
844 - use cleaner coroutine destruction.
845 - simplify configuration for users.
846 - optionally (unrecommended) prefer perl functions over
847 their coro replacements.
848
8493.11 Tue Dec 5 13:11:24 CET 2006
850 - fixed some bogus assert's, but as perl.h disables assert even
851 without NDEBUG (thank you very much), not too many people should
852 notice (that did include myself). Andreas König noticed, though :)
853 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
854 it. Also noticed by Andreas König :)
855 - save/restore tainted status.
856 - verified to pass the testsuite on my 5.9.5.
857
8583.1 Mon Dec 4 23:03:40 CET 2006
859 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
860 - incompatible change: transfer flags are now per-state.
7 - give a better error message on deadlock. 861 - give a better error message on deadlock.
862 - document Coro::nready.
863 - enhanced testsuite.
8 864
93.01 Sun Dec 3 23:47:42 CET 2006 8653.01 Sun Dec 3 23:47:42 CET 2006
10 - forgot to include Coro::Timer. 866 - forgot to include Coro::Timer.
11 867
123.0 Sun Dec 3 22:57:25 CET 2006 8683.0 Sun Dec 3 22:57:25 CET 2006

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