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Comparing Coro/Changes (file contents):
Revision 1.358 by root, Fri May 30 21:34:52 2008 UTC vs.
Revision 1.534 by root, Sun Apr 11 19:23:18 2010 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO. 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang's 4TODO: unready_all
5 actor model (which is cool in a lot of important aspects (failures!), 5TODO: myhttpd header parsing
6 but very lacking in others (higher level ipc)). 6TODO: channel->maxsize(newsize)?
7
8TODO: http://www.microsoft.com/msj/archive/s2ce.aspx
9
10 - convert Coro::Util into a "perl compatibility wrapper" - the functions
11 are less useful now, but are drop-in replacements for existing
12 functions, listing better alternatives in the documentation. This also
13 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
14 with Coro::Util::inet_aton.
15 - do not override $Coro::idle unconditionally in Coro.pm, as other
16 modules could have provided their own idle coro already
17 (for exmaple, Coro::AnyEvent).
18 - fix Coro::Util::gethost* functions.
19 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
20
215.21 Wed Dec 16 07:19:51 CET 2009
22 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
23 together.
24 - add some examples on how to combine other event loops with Coro in
25 Coro::AnyEvent, and how to run it (and not to block). Seems to be
26 the most common source of confusion.
27 - try to catch people naively blocking in an event callback.
28 - work around the perl filehandle bug issue in conjunction with
29 older common::sense (as indirectly pointed out by ZSystem).
30 - clarify the "not from signal handlers" section.
31
325.2 Sun Oct 4 14:54:24 CEST 2009
33 - Coro::Storable destroyed the prototypes of the functions it wrapped.
34 - export rouse_cb and rouse_wait by default now.
35 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
36 - new method $state->swap_sv.
37 - added section on "windows process emulation" to the manpage,
38 after a not-so-fruitful (nor-friendly) "discussion" with chip
39 salzenberg (discussion implies arguments, but his only arguments
40 were ad-hominems, one wonders why he started it in the first
41 place). I hope this explains it well enough for him to understand,
42 and maybe well enough for others to understand.
43 - use common::sense everywhere now.
44 - idle callbacks are no longer supported, use idle coros instead.
45 - print a thread listing when a deadlock is detected.
46
475.17 Sat Aug 22 23:09:31 CEST 2009
48 - work around a bug in the perl debugger causing crashes
49 when running under the debugger by marking _pool_handler as nodebug.
50 - speed up Coro::async considerably.
51 - try some hacks to get netbsd to work "more often" - their broken
52 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
53 - convert Coro to AE 5.0 API.
54
555.162 Tue Jul 28 04:04:03 CEST 2009
56 - perl 5.8.2 is now minimum requirement.
57 - skip t/19_handle.t on broken windows perls.
58
595.161 Wed Jul 22 04:47:38 CEST 2009
60 - Coro::AnyEvent::poll could have a different prototype when EV was
61 used as backend (analyzed by Tatsuhiko Miyagawa).
62 - Coro::AnyEvent errornously initialised the event loop when loaded,
63 not on demand.
64 - try to workaround rare */t/01_unblock.t failures.
65
665.16 Tue Jul 21 01:44:37 CEST 2009
67 - Coro::AnyEvent failed to hook into the event loop
68 when no threads had been readied between detecting
69 the event loop and actually running it.
70 - considerably speed up Coro::Select by taking avdantage
71 of AnyEvent > 4.8 and some other optimisations.
72 - implement paragraph readline mode in Coro::Handle
73 (based on patches by Zsbán Ambrus).
74 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
75 and analyzed by Yasuhiro MATSUMOTO).
76 - clarified libcoro license and copyright.
77 - someone stole my EXTRA_META!!!
78 - implement Coro::Select::patch_pp_sselect and it's brother,
79 for hardcode select overriding.
80
815.151 Mon Jul 6 05:41:57 CEST 2009
82 - backport to windows process emulation code again (patch by
83 Yasuhiro MATSUMOTO).
84 - slightly update Coro::MakeMaker.
85
865.15 Tue Jun 30 10:28:06 CEST 2009
87 - deprecate Coro::Socket, document how to get ipv6 support via
88 AnyEvent::Socket instead.
89 - implement signal->wait ($cb) interface, similar to semaphores.
90 - work around SvOK not supporting getmagic, so we have to getmagic
91 to test for undef :/ (reported by Matthias Waldorf).
92 - load Coro::AnyEvent in all modules using AnyEvent.
93 - work around perl corrupting our internal data structures,
94 reported by Tokuhiro Matsuno.
95 - enable per-coroutine real and cpu time gathering
96 (Coro::State::enable_times).
97
985.14 Wed Jun 24 01:37:48 CEST 2009
99 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
100 as this seems to have been a difficult concept (poll, sleep, idle,
101 idle_upto).
102 - add Coro::AnyEvent::readable/writable functions.
103 - clarify Coro::EV/Event/AnyEvent manpages.
104 - free per-thread global scalars in the thread calling ->cancel, to
105 avoid crashes when $_, $@ etc., are magical but some of those
106 had already been freed.
107 - "unexperimentalise" the callback interface for Coro::Semaphore.
108 - speed up ready queue management/context switching by using a linked
109 list instead of an array (~5-10%).
110 - implement "watch" command in Coro::Debug shells.
111 - for fun, implement time-slicing as an example in the manpage.
112 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
113 Coro::Event, use the normal AnyEvent handling instead of dieing
114 (the same is true for Coro::Handle).
115 - properly document Coro::EV::timed_io_once.
116 - avoid unneccessary ->cancel calls in Coro::Handle.
117 - maybe make it work on mingw32 with win32 backend
118 (based on patch by Yasuhiro Matsumoto).
119
1205.132 Fri May 29 09:00:39 CEST 2009
121 - do not keep a reference to the argument itself in
122 Coro::Semaphore::guard, as it could change later.
123 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
124 should support a prepare callback.
125
1265.131 Mon Mar 16 23:20:37 CET 2009
127 - implement and document Coro->suspend, Coro->resume.
128 - fix Coro::Select implementation to not (often) close
129 the passed file descriptors (testcase provided by pippijn).
130
1315.13 Mon Dec 15 21:51:42 CET 2008
132 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
133 - don't set diehook to C<undef> but instead to NULL, to avoid
134 spurious warnings.
135 - fix a lot of bugs in Coro::SemaphoreSet.
136 - Coro::SemaphoreSet will less often create a semaphore needlessly.
137 - add Coro::SemaphoreSet::count and wait methods.
138 - take advantage of the new Guard module.
139 - deprecate Coro::guard.
140 - try to fix the dreaded 01_unblock tests once more. I hate it when
141 testsuites need more fixing than the code they are supposed to test.
142 - croak in more cases when a required callback isn't resolvable.
143 - fix some minor issues in Coro::State->call/eval.
144 - use current coroutine context instead of a temporary one
145 when temporarily switching to another coroutine.
146 - do not call C-level on_destroy handlers during global destruction,
147 to avoid needless segfaults.
148
1495.12 Sun Dec 7 13:30:38 CET 2008
150 - add default config for MirOS, which seems to be a bug-to-bug
151 compatible fork of openbsd ("world domination by releasing
152 openbsd cvs before the openbsd folks do it" or so :).
153 - free_padlist did destroy the names pad, not good, but didn't
154 seem to bother perl - this could fix issues such as eval ""
155 inside a function called from multiple coroutines.
156 - use a different method to detect destruction time.
157 - be more careful when freeing padlists just before global
158 destruction.
159 - fixed and expanded the call/cc example.
160 - renamed _terminate to _coro_run.
161 - new method Coro::Channel->shutdown.
162 - try pthreads on openbsd <4.4 (broken sigaltstack, will
163 pthreads fare better?).
164 - be less picky about destroying "a" running coroutine.
165
1665.11 Tue Nov 25 21:49:05 CET 2008
167 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
168 working code with failed assertions, introducing more bugs than
169 it fixes, requiring elaborate workarounds :(
170
1715.1 Mon Nov 24 08:54:59 CET 2008
172 - wrote a small introductory tutorial - Coro::Intro.
173 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
174 - Coro::Select did errornously dup the file descriptors
175 and didn't work with all AnyEvent backends.
176 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
177 LWP data transfers.
178 - disassociate c contexts from coro objects - this is agruably more
179 correct, but mostly allows sharing of cctxs between coro and state
180 objects, for added memory savings and speed increases.
181 - bumped $Coro::POOL_RSS up to 32kb by default.
182 - no longer set the optype to OP_CUSTOM, as B::* understandably
183 doesn't like this very much (and we *are* a type of entersub).
184 - implement state cloning, just to prove that call/cc can be done.
185 - automatically load Coro::AnyEvent in Coro::Handle.
186 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
187 do not have this method (and don't need it either).
188 - speed up generic anyevent methods in Coro::Handle by using rouse
189 callbacks.
190 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
191 others. It also makes the debugger happier, as you can trace
192 through the idle threads now.
193 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
194 - eg/event was pretty broken.
195 - better 5.8.6 compatibility.
196
1975.0 Thu Nov 20 10:35:05 CET 2008
198 - NEW ARCHITECTURE: use the latest 4.x version if you experience
199 stability issues.
200 - bump API version to 7 - all dependents must be recompiled.
201 - removed timed_* functions - they were not being used anyways
202 and should be replaced by a more generic mechanism -
203 and were annoying to support anyways :)
204 - removed SemaphoreSet's waiter method - use sem method instead.
205 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
206 - async_pool did free a scalar value twice
207 ("Attempt to unreference...").
208 - fix a longstanding bug where calling terminate on a coro that
209 was waiting for a semaphore that was just becoming available
210 would cause a deadlock (semaphore would get into a state where
211 it was available but waiters were still blocked).
212 - calling throw on a coroutine that is waiting for a semaphore will
213 no longer make it acquire the semaphore (and thus leak a count).
214 - perl's process emulation is now not even theoretically supported
215 anymore.
216 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
217 conversion of callback-style to blocking-style.
218 - new methods $coro->schedule_to and ->cede_to, to specifically
219 schedule or cede to a specific coroutine.
220 - new function Coro::Semaphore::wait.
221 - use named constants in Coro::Channel (Richard Hundt).
222 - directly patch the entersub opcode calling SLF functions (cede,
223 transfer and so on). this does speed up context switching, but
224 more importanly, it frees us from the hardcoded behaviour of
225 entersub, so we might actually be able to return something from
226 those functions and atcually create new ones.
227 - take advantage of __builtin_frame_address on gcc.
228 - expose THX in coroapi (not sure whether this was a wise decision,
229 as "threaded" perls are running at half speed anyways).
230 - implement execute_slf (schedule-like-function) interface that makes
231 it possible to implement schedule-like-functions in XS.
232 - use new SLF interface to massively speed up Coro::EV by roughly a
233 factor of two.
234 - used new SLF interface to massively speed up Coro::Semaphore by a
235 factor of three.
236 - used new SLF interface to speed up Coro::AIO by roughly a factor of
237 four and reduce its memory usage considerably.
238 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
239 for a nice speedup and vastly more correct behaviour. Also implement
240 a new method "sem" to get at the underlying semaphore object.
241 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
242 (in comparison) 20-40% speedup.
243 - used new SLF interface to reimplement Coro::Signal gaining
244 some unknown (because I was too lazy), but certain, speedup, and also
245 making signals reliable for the first time.
246 - used new SLF interface and other optimisations to speed up async_pool
247 by a factor of two. It also doesn't rely on perl's exception mechanism
248 to exit anymore. The overhead for terminating an async_pool, coro over
249 a normal async is now very small.
250 - sped up coroutine creation/destruction by 40%.
251 - forgot to include Coro/libcoro/README in the dist for all these years.
252 - work around a freebsd pthreads bug (manual testcancel is required as
253 pthread_cond_wait isn't a cancellation point on freebsd).
254 - use new rouse functions to speed up and simplify Coro::BDB.
255 - make "prefer perl native functions" work with threaded perls.
256 - condense Coro::Debug ps output, hint at v and w flags.
257 - (libcoro) lots of minor cleanups and portability improvements.
258
2594.914 Wed Nov 19 12:54:18 CET 2008
260 - fix a disastrous bug in the readline optimisation
261 introduced in 4.801.
262
2634.913 Sat Nov 15 07:58:28 CET 2008
264 - async_pool did free a scalar value twice
265 ("Attempt to unreference...").
266
2674.912 Thu Nov 13 18:31:23 CET 2008
268 - minor cleanups.
269 - use much larger stacks on linux and perl < 5.8.8.
270 - Coro::Debug::new_unix_server did not unlink the socket
271 when destroyed.
272
2734.911 Tue Nov 11 04:26:17 CET 2008
274 - "port" to threaded perls.
275
2764.91 Mon Nov 10 05:36:38 CET 2008
277 - the ->throw exception object no longer leaks.
278 - creating a new cctx leaked a scopestack entry (memleak).
279 - new coroutines didn't get created with a zero flags field
280 (unknown impact).
281 - calling ->throw on a not-yet-started coroutine should now work
282 instead of being ignored.
283 - ->throw is now supported on Coro::State objects.
284 - clean up cctx creation code a bit.
285 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
286
2874.9 Sat Nov 8 17:45:27 CET 2008
288 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
289 - (libcoro) no longer leak threads in the experimental pthread backend,
290 also speed it up considerably.
291 - (libcoro) do not rely on makecontext passing void *'s unscathed.
292 - fix compiletime dependencies on libcoro in the Makefile.
293 - cctx_count wasn't always updated properly.
294 - Coro::State::cctx_stacksize wasn't applied correctly.
295 - new function Coro::State::cctx_max_idle.
296 - the default max number of idle C contexts is now 4.
297 - (libcoro) try harder to get _setjmp/_longjmp.
298 - (libcoro) cleanup and extend the libcoro API to officially
299 allow the creation of empty source contexts.
300 - very experimental workaround for the totally broken netbsd platform.
301 - tried to hack around openbsd bugs.
302
3034.804 Wed Nov 5 16:36:00 CET 2008
304 - Coro::Debug::new_unix_server would not create a non-blocking listening
305 socket, sometimes causing freezes.
306 - (libcoro) fix misaligned stack points for setjmp and assembly
307 methods, which can cause crashes on x86/x86_64 with a sufficiently
308 aggressive compiler.
309 - new function: Coro::Debug::new_tcp_server.
310 - move ->throw into the Coro class because it only works on coro objects.
311
3124.803 Mon Nov 3 17:16:12 CET 2008
313 - (libcoro) use a global asm statement to become independent of gcc
314 otpimisations for CORO_ASM (thanks to pippijn for the idea).
315 - try to workaround yet another broken bsd, this time dragonfly.
316
3174.802 Thu Oct 30 10:56:12 CET 2008
318 - support -fno-omit-frame-pointer on x86 with the assembly method.
319 - tune 01_unblock.t tests a bit.
320
3214.801 Wed Oct 22 18:33:37 CEST 2008
322 - improve readline speed for very long "lines".
323 - backport to 5.8.8.
324
3254.8 Thu Oct 2 13:34:40 CEST 2008
326 - new function Coro::AIO::aio_wait.
327 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
328 - greatly speed up and reduce memory usage of Coro::AIO requests.
329 - implement some other µ-optimisations.
330
3314.749 Mon Sep 29 14:40:12 CEST 2008
332 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
333
3344.748 Sat Sep 27 14:03:19 CEST 2008
335 - implement, but do not document, PerlIO::cede(granularity).
336 - Coro::Storable forgot to wrap Storable::pstore.
337 - work around the multitude of leaks and memory corruption
338 bugs in PerlIO::via by using our own C-level perliol. As a side
339 effect, Coro::Storable is now much, much, much faster.
340
3414.747 Tue Sep 23 01:59:41 CEST 2008
342 - fix a per-cv memleak (one empty array was leaked per
343 code reference).
344 - avoid a crash in coro->call|rss when the coroutine was already
345 destroyed (most noticably when using Coro::Debug::ps :)
346 - also protect *Storable::FILE.
347 - push up default storable granularity to 20ms.
348
3494.746 Sun Sep 21 03:22:20 CEST 2008
350 - be more insistent on locking Storable against reentrancy
351 in Coro::Storable.
352 - move swap_def?v and throw to Coro::State, as documented.
353
3544.745 Thu Jul 24 00:14:38 CEST 2008
355 - remove debugging code related to MgPV_nolen_const, also try to
356 make it compile with perl 5.8.6 (yes, apple apparently loves
357 outdated software). Reported by John S.
358
3594.744 Tue Jul 8 22:06:35 CEST 2008
360 - correctly provide default DIE/WARN handlers as documented.
361 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
362 implementations inside perl work fine for us.
363
3644.743 Mon Jun 16 00:21:57 CEST 2008
365 - when using Coro::EV without running EV::loop it could
366 result in busy-waiting for events, this has been fixed.
367 - reduce codesize and improve performance by using EV_DEFAULT_UC.
368
3694.742 Sat May 31 14:10:21 CEST 2008
370 - implement a workaround for (some) perl <5.8.8 versions.
371 - require EV 3.3+.
7 372
84.741 Fri May 30 23:33:09 CEST 2008 3734.741 Fri May 30 23:33:09 CEST 2008
9 - tell netbsd how utterly broken their imitation of an OS is 374 - tell netbsd how utterly broken their imitation of an OS is
10 and refuse to build by default if pthreads are in use. 375 and refuse to build by default if pthreads are in use.
11 - switch to "s" method on all bsd's by default, as their ucontext 376 - switch to "s" method on all bsd's by default, as their ucontext

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