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Comparing Coro/Changes (file contents):
Revision 1.459 by root, Sat Nov 22 15:48:43 2008 UTC vs.
Revision 1.616 by root, Wed May 8 00:55:40 2013 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: should explore PerlIO::coroaio (perl leaks like hell). 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang's 4TODO: channel->maxsize(newsize)?
5 actor model (which is cool in a lot of important aspects (failures!), 5TODO: __GCC_HAVE_DWARF2_CFI_ASM
6 but very lacking in others (higher level ipc)).
7 6
8 TODO: Coro/Intro 76.29 Wed May 8 02:55:18 CEST 2013
8 - when an on_destroy handler destructs the coro currently being
9 destructed a perl scalar could be accessed after being freed,
10 likely causing a crash.
11
126.28 Wed Mar 6 06:58:02 CET 2013
13 - clean remnants of existing __DIE__ and __WARN__ handlers so
14 they lose their magic and will not cause segfaults later
15 (testcase by Andrey Sagulin).
16 - improved Coro::State documentation a bit.
17 - Coro::Debug::command now flushes the output.
18 - add hack detection code for x32 abi, because the braindead slugs
19 who designed that made it look exactly like x86_64 without
20 providing proper compile time symbols to test for it. as a result,
21 this detection cannot work reliably.
22 - valgrind stack registering was broken.
23 - do not rely on Time::HiRes anymore in Coro::Debug.
24
256.23 Fri Dec 7 23:36:37 CET 2012
26 - use experimental fiber implementation on native windows
27 perls.
28 - use sizeof (void *) as multiplication factor for stack sizes,
29 to accomodate the totally braindamaged microsoft 64 bit "os".
30 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
31 activeperl 5.16 crashes when PerlIO_define_layer is called due
32 to some bug in the perl dll, strawberry perl at least passes
33 the testsuite.
34 - implement Coro::Handle->peeraddr/host/port, for slightly
35 improved compatibility with LWP.
36 - implement 5.17 compatibility by almost blindly applying a
37 good-looking patch by Father Chrysostomos.
38 - move stack management functions into libcoro 3.
39 - libcoro version 3 "released".
40 - support magic values as timed_io_once args.
41 - recommend AnyEvent 7+ or EV 4+, also require EV
42 version 4 or newer for Coro::EV.
43
446.10 Tue Oct 9 01:14:27 CEST 2012
45 - updated ecb.h, it had a typo that caused it to not compile on many
46 big endian systems (reported by many people).
47 - disable memory fences in ecb.h to improve portability.
48
496.09 Sat Oct 6 23:25:02 CEST 2012
50 - Coro::EV I/O watchers were not interruptible by exceptions
51 (Coro::State::throw) (testcase by sten).
52 - ->throw now puts threads into the ready queue, as this seems to
53 be expected by existing code, and code that doesn't cope with spurious
54 wakeups needs fixing anyway.
55 - use fd -1 in mmap.
56 - cast I32 to int in error message printf.
57 - warn about broken so-called "hardened" kernels.
58
596.08 Fri Apr 13 12:05:47 CEST 2012
60 - be more aggressive about exiting like perl does - formerly,
61 exiting from the non-main thread would not execute END blocks.
62
636.07 Fri Nov 11 21:21:48 CET 2011
64 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
65 - update ecb.h.
66
676.06 Mon Aug 8 23:59:48 CEST 2011
68 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
69 backend, which is an order of magnitude slower. unfortunately, cygwins
70 pthread implementation isn't very complete either, so allocate the stack
71 twice just to be sure.
72 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
73 in its ithreaded perl - best recompile cygwin and use the 'w'indows
74 backend for much better performance. also disable ithreads for
75 even better performance...).
76
776.05 Thu Aug 4 21:36:36 CEST 2011
78 - blush, condvar values would not be propagated from send to recv anymore
79 (reported by Chip Salzenberg).
80 - use exponential increase for the readline buffer length in
81 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
82
836.04 Wed Aug 3 17:15:45 CEST 2011
84 - use even more efficient and more compatible condvars for
85 compatibility to AnyEvent 6.x :)
86 - more inconsequential ecb.h updates.
87
886.03 Wed Aug 3 11:41:30 CEST 2011
89 - change how Coro patches AnyEvent condvars for compatibility to
90 AnyEvent 6.x.
91 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
92 hasn't been included.
93
946.02 Wed Jul 13 04:35:19 CEST 2011
95 - "improve portability to Gentoo" - gentoo manages to put perl variables
96 in memory areas that are farther than 2gb apart, which the jit couldn't
97 handle and barfed. now it's just a bit slower on gentoo and similar
98 systems.
99
1006.01 Sun Jul 3 12:31:14 CEST 2011
101 - workarounds are good, but the test for whether pthreads are used
102 was not good. thisone should be better.
103 - check differently whether gcc generates cfi instructions itself.
104
1056.0 Wed Jun 29 19:43:35 CEST 2011
106 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
107 destroyed and cleaned up automatically (e.g. async { schedule }).
108 - implement a JIT compiler for part of the thread switch code,
109 which gives a 50% speed improvement on threaded perls, and
110 about 4% on non-thraeded perls (so threaded perls now finally
111 reach about half the speed of non-threaded perls).
112 - slightly modernise Coro::Intro, add section about rouse functions.
113 - avoid DEFSV and ERRSV, giving another 10% improvement
114 in thread switching.
115 - Coro::State->is_destroyed is now called is_zombie.
116 - implement a Coro->safe_cancel method that might fail, but
117 cancels in a "safer" way if it succeeds.
118 - add preliminary support for DEBUGGING perls.
119 - get rid of two hash-accesses when initialising a new Coro - this
120 speeds up coro creation by almost a factor of two.
121 - croak when a coro that is being cancelled tries to block
122 (e.g. while executing a guard block), instead of crashing or
123 deadlocking.
124 - use a more robust and also faster method to identify Coro::State
125 objects - speeds up everything a bit.
126 - implement Coro->cancel in XS for a 20% speed improvement, and to
127 be able to implement mutual cancellation.
128 - speed up context switches by a percent or two by more efficiently
129 allocating context stack entries.
130 - implement Coro->join and Coro->on_destroy in XS for a speedup and
131 a reduction in memory use.
132 - cancelling a coro while it itself is cancelling another coro is
133 now supported and working, instead of triggering an assertion.
134 - be a bit more crash-resistant when calling (buggy) on_destroy
135 callbacks (best effort).
136 - move on_destroy into the slf_frame, to allow extension slf
137 functions to have destructors.
138 - get rid if coro refcounting - simply crash in other interpreter
139 threads by nulling the pointers on clone.
140 - simplify warn/die hook handling when loading Coro - the convoluted
141 logic seems to be no longer neccessary.
142 - use libecb instead of our own home-grown gcc hacks.
143 - document alternatives to Coro::LWP. Please use them :)
144 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
145 sigaltstack. Really. wine suffers from it, erlang suffers from it,
146 and it's known since at least 2006.
147
1485.372 Wed Feb 23 06:14:30 CET 2011
149 - apparently mingw doesn't provide a working gettimeofday, try to
150 work around that by relying on Time::HiRes (indirectly brought to
151 my attention by Max Maischein).
152 - fix some portability issues when Time::HiRes was used.
153
1545.371 Mon Feb 21 14:36:08 CET 2011
155 - backport to windows process emulation code again.
156
1575.37 Sat Feb 19 07:49:44 CET 2011
158 - add a big "Coro thread life cycle" section to "man Coro".
159 - try a tentative workaround against the breakage that 5.13 has
160 introduced without depreciation period. sigh.
161 - no longer use Time::HiRes if gettimeofday is available, which
162 saves quite a lot of memory.
163
1645.36 Sun Feb 13 05:33:41 CET 2011
165 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
166 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
167 method call.
168 - undocument Coro::Timer::sleep and obsolete whole module.
169 - optimise Coro::Timer::timeout memory and cpu usage.
170 - slightly updated Coro::Intro for recent changes.
171 - do not initialise PL_dirty anymore.
172
1735.25 Thu Nov 11 01:08:39 CET 2010
174 - try a different approach on netbsd - netbsd 5 finally has marginally
175 working pthreads, but still broken ucontext/sigaltstack.
176 - openbsd 4.8 finally got their act together, Coro works out of the box
177 with asm, setjmp and pthreads (no change, just informational).
178
1795.24 Sat Oct 23 11:27:12 CEST 2010
180 - port to the EV 4.0 API.
181 - work around bugs in mingw32, making strawberry perl work
182 out of the box.
183 - correctly modify Coro::AIO function prototypes
184 so that they reflect the "no optional parameters" rule.
185 - "ported" libcoro to C++.
186
1875.23 Mon May 17 18:50:42 CEST 2010
188 - be more resistant to ordering changes when initialising
189 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
190 Waldorf).
191 - document that perl 5.12 deliberately removed support for cloning.
192
1935.22 Wed Apr 14 03:55:35 CEST 2010
194 - correctly return udnef on errors in Coro::Handle::read/write
195 (testcase by Marc Mims).
196 - convert Coro::Util into a "perl compatibility wrapper" - the functions
197 are less useful now, but are drop-in replacements for existing
198 functions, listing better alternatives in the documentation. This also
199 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
200 with Coro::Util::inet_aton.
201 - do not override $Coro::idle unconditionally in Coro.pm, as other
202 modules could have provided their own idle coro already
203 (for exmaple, Coro::AnyEvent).
204 - fix Coro::Util::gethost* functions.
205 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
206
2075.21 Wed Dec 16 07:19:51 CET 2009
208 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
209 together.
210 - add some examples on how to combine other event loops with Coro in
211 Coro::AnyEvent, and how to run it (and not to block). Seems to be
212 the most common source of confusion.
213 - try to catch people naively blocking in an event callback.
214 - work around the perl filehandle bug issue in conjunction with
215 older common::sense (as indirectly pointed out by ZSystem).
216 - clarify the "not from signal handlers" section.
217
2185.2 Sun Oct 4 14:54:24 CEST 2009
219 - Coro::Storable destroyed the prototypes of the functions it wrapped.
220 - export rouse_cb and rouse_wait by default now.
221 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
222 - new method $state->swap_sv.
223 - added section on "windows process emulation" to the manpage,
224 after a not-so-fruitful (nor-friendly) "discussion" with chip
225 salzenberg (discussion implies arguments, but his only arguments
226 were ad-hominems, one wonders why he started it in the first
227 place). I hope this explains it well enough for him to understand,
228 and maybe well enough for others to understand.
229 - use common::sense everywhere now.
230 - idle callbacks are no longer supported, use idle coros instead.
231 - print a thread listing when a deadlock is detected.
232
2335.17 Sat Aug 22 23:09:31 CEST 2009
234 - work around a bug in the perl debugger causing crashes
235 when running under the debugger by marking _pool_handler as nodebug.
236 - speed up Coro::async considerably.
237 - try some hacks to get netbsd to work "more often" - their broken
238 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
239 - convert Coro to AE 5.0 API.
240
2415.162 Tue Jul 28 04:04:03 CEST 2009
242 - perl 5.8.2 is now minimum requirement.
243 - skip t/19_handle.t on broken windows perls.
244
2455.161 Wed Jul 22 04:47:38 CEST 2009
246 - Coro::AnyEvent::poll could have a different prototype when EV was
247 used as backend (analyzed by Tatsuhiko Miyagawa).
248 - Coro::AnyEvent errornously initialised the event loop when loaded,
249 not on demand.
250 - try to workaround rare */t/01_unblock.t failures.
251
2525.16 Tue Jul 21 01:44:37 CEST 2009
253 - Coro::AnyEvent failed to hook into the event loop
254 when no threads had been readied between detecting
255 the event loop and actually running it.
256 - considerably speed up Coro::Select by taking avdantage
257 of AnyEvent > 4.8 and some other optimisations.
258 - implement paragraph readline mode in Coro::Handle
259 (based on patches by Zsbán Ambrus).
260 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
261 and analyzed by Yasuhiro MATSUMOTO).
262 - clarified libcoro license and copyright.
263 - someone stole my EXTRA_META!!!
264 - implement Coro::Select::patch_pp_sselect and it's brother,
265 for hardcode select overriding.
266
2675.151 Mon Jul 6 05:41:57 CEST 2009
268 - backport to windows process emulation code again (patch by
269 Yasuhiro MATSUMOTO).
270 - slightly update Coro::MakeMaker.
271
2725.15 Tue Jun 30 10:28:06 CEST 2009
273 - deprecate Coro::Socket, document how to get ipv6 support via
274 AnyEvent::Socket instead.
275 - implement signal->wait ($cb) interface, similar to semaphores.
276 - work around SvOK not supporting getmagic, so we have to getmagic
277 to test for undef :/ (reported by Matthias Waldorf).
278 - load Coro::AnyEvent in all modules using AnyEvent.
279 - work around perl corrupting our internal data structures,
280 reported by Tokuhiro Matsuno.
281 - enable per-coroutine real and cpu time gathering
282 (Coro::State::enable_times).
283
2845.14 Wed Jun 24 01:37:48 CEST 2009
285 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
286 as this seems to have been a difficult concept (poll, sleep, idle,
287 idle_upto).
288 - add Coro::AnyEvent::readable/writable functions.
289 - clarify Coro::EV/Event/AnyEvent manpages.
290 - free per-thread global scalars in the thread calling ->cancel, to
291 avoid crashes when $_, $@ etc., are magical but some of those
292 had already been freed.
293 - "unexperimentalise" the callback interface for Coro::Semaphore.
294 - speed up ready queue management/context switching by using a linked
295 list instead of an array (~5-10%).
296 - implement "watch" command in Coro::Debug shells.
297 - for fun, implement time-slicing as an example in the manpage.
298 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
299 Coro::Event, use the normal AnyEvent handling instead of dieing
300 (the same is true for Coro::Handle).
301 - properly document Coro::EV::timed_io_once.
302 - avoid unneccessary ->cancel calls in Coro::Handle.
303 - maybe make it work on mingw32 with win32 backend
304 (based on patch by Yasuhiro Matsumoto).
305
3065.132 Fri May 29 09:00:39 CEST 2009
307 - do not keep a reference to the argument itself in
308 Coro::Semaphore::guard, as it could change later.
309 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
310 should support a prepare callback.
311
3125.131 Mon Mar 16 23:20:37 CET 2009
313 - implement and document Coro->suspend, Coro->resume.
314 - fix Coro::Select implementation to not (often) close
315 the passed file descriptors (testcase provided by pippijn).
316
3175.13 Mon Dec 15 21:51:42 CET 2008
318 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
319 - don't set diehook to C<undef> but instead to NULL, to avoid
320 spurious warnings.
321 - fix a lot of bugs in Coro::SemaphoreSet.
322 - Coro::SemaphoreSet will less often create a semaphore needlessly.
323 - add Coro::SemaphoreSet::count and wait methods.
324 - take advantage of the new Guard module.
325 - deprecate Coro::guard.
326 - try to fix the dreaded 01_unblock tests once more. I hate it when
327 testsuites need more fixing than the code they are supposed to test.
328 - croak in more cases when a required callback isn't resolvable.
329 - fix some minor issues in Coro::State->call/eval.
330 - use current coroutine context instead of a temporary one
331 when temporarily switching to another coroutine.
332 - do not call C-level on_destroy handlers during global destruction,
333 to avoid needless segfaults.
334
3355.12 Sun Dec 7 13:30:38 CET 2008
336 - add default config for MirOS, which seems to be a bug-to-bug
337 compatible fork of openbsd ("world domination by releasing
338 openbsd cvs before the openbsd folks do it" or so :).
339 - free_padlist did destroy the names pad, not good, but didn't
340 seem to bother perl - this could fix issues such as eval ""
341 inside a function called from multiple coroutines.
342 - use a different method to detect destruction time.
343 - be more careful when freeing padlists just before global
344 destruction.
345 - fixed and expanded the call/cc example.
346 - renamed _terminate to _coro_run.
347 - new method Coro::Channel->shutdown.
348 - try pthreads on openbsd <4.4 (broken sigaltstack, will
349 pthreads fare better?).
350 - be less picky about destroying "a" running coroutine.
351
3525.11 Tue Nov 25 21:49:05 CET 2008
353 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
354 working code with failed assertions, introducing more bugs than
355 it fixes, requiring elaborate workarounds :(
356
3575.1 Mon Nov 24 08:54:59 CET 2008
358 - wrote a small introductory tutorial - Coro::Intro.
9 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API. 359 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
10 - Coro::Select did errornously dup the file descriptors 360 - Coro::Select did errornously dup the file descriptors
11 and didn't work with all AnyEvent backends. 361 and didn't work with all AnyEvent backends.
362 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
363 LWP data transfers.
12 - disassociate c contexts from coro objects - this is agruably more 364 - disassociate c contexts from coro objects - this is agruably more
13 correct, but mostly allows sharing of cctxs between coro and state 365 correct, but mostly allows sharing of cctxs between coro and state
14 objects, for added memory savings and speed increases. 366 objects, for added memory savings and speed increases.
15 - bumped $Coro::POOL_RSS up to 32kb by default. 367 - bumped $Coro::POOL_RSS up to 32kb by default.
16 - no longer set the optype to OP_CUSTOM, as B::* understandably 368 - no longer set the optype to OP_CUSTOM, as B::* understandably
17 doesn't like this very much (and we *are* a type of entersub). 369 doesn't like this very much (and we *are* a type of entersub).
18 - implement state cloning, just to prove that call/cc can be done. 370 - implement state cloning, just to prove that call/cc can be done.
371 - automatically load Coro::AnyEvent in Coro::Handle.
372 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
373 do not have this method (and don't need it either).
374 - speed up generic anyevent methods in Coro::Handle by using rouse
375 callbacks.
376 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
377 others. It also makes the debugger happier, as you can trace
378 through the idle threads now.
379 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
380 - eg/event was pretty broken.
19 - better 5.8.6 compatibility. 381 - better 5.8.6 compatibility.
20 382
215.0 Thu Nov 20 10:35:05 CET 2008 3835.0 Thu Nov 20 10:35:05 CET 2008
22 - NEW ARCHITECTURE: use the latest 4.x version if you experience 384 - NEW ARCHITECTURE: use the latest 4.x version if you experience
23 stability issues. 385 stability issues.

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