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Comparing Coro/Changes (file contents):
Revision 1.184 by root, Fri Dec 22 04:34:04 2006 UTC vs.
Revision 1.429 by root, Tue Nov 18 09:59:27 2008 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: better (earlier) error messages on broken transfer's 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang's
5 actor model (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)).
4 7
8TODO: testcancel
9TODO: guard as SLF - to avoid deadlocks.
10 - avoid deadlock in Coro::Channel if maxsize == 1 (Richard Hundt).
11
125.0
13 - NEW ARCHITECTURE: use the latest 4.x version if you experience
14 stability issues.
15 - bump API version to 7 - all dependents must be recompiled.
16 - removed timed_down and timed_guard functions - they were not being
17 used anyways and should be replaced by a more generic mechanism -
18 and were annoying to support anyways :)
19 - removed SemaphoreSet's waiter method - use sem instead.
20 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
21 - async_pool did free a scalar value twice
22 ("Attempt to unreference...").
23 - fix a longstanding bug where calling terminate on a coro that
24 was waiting for a semaphore that was just becoming available
25 would cause a deadlock (semaphore would get into a state where
26 it was available but waiters were waiting(.
27 - perl's process emulation is now not even theoretically supported
28 anymore.
29 - use named constants in Coro::Channel (Richard Hundt).
30 - directly patch the entersub opcode calling SLF functions (cede,
31 transfer and so on). this does speed up context switching, but
32 more importanly, it frees us from the hardcoded behaviour of
33 entersub, so we might actually be able to return something from
34 those functions and atcually create new ones.
35 - take advantage of __builtin_frame_address on gcc.
36 - expose THX in coroapi (not sure whether this was a wise decision,
37 as "threaded" perls are running at half speed anyways).
38 - implement execute_slf (schedule-like-function) interface that makes
39 it possible to implement schedule-like-functions in XS.
40 - use new SLF interface to massively speed up Coro::EV by roughly a
41 factor of two.
42 - used new SLF interface to massively speed up Coro::Semaphore by a
43 factor of three.
44 - used new SLF interface to speed up Coro::AIO by roughly a factor of
45 four and reduce its memory usage considerably.
46 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
47 for a nice speedup and vastly more correct behaviour. Also implement
48 a new method "sem" to get at the underlying semaphore object.
49 - forgot to include Coro/libcoro/README in the dist for all these years.
50 - work around a freebsd pthreads bug (manual testcancel is required as
51 pthread_cond_wait isn't a cancellation point on freebsd).
52
534.913 Sat Nov 15 07:58:28 CET 2008
54 - async_pool did free a scalar value twice
55 ("Attempt to unreference...").
56
574.912 Thu Nov 13 18:31:23 CET 2008
58 - minor cleanups.
59 - use much larger stacks on linux and perl < 5.8.8.
60 - Coro::Debug::new_unix_server did not unlink the socket
61 when destroyed.
62
634.911 Tue Nov 11 04:26:17 CET 2008
64 - "port" to threaded perls.
65
664.91 Mon Nov 10 05:36:38 CET 2008
67 - the ->throw exception object no longer leaks.
68 - creating a new cctx leaked a scopestack entry (memleak).
69 - new coroutines didn't get created with a zero flags field
70 (unknown impact).
71 - calling ->throw on a not-yet-started coroutine should now work
72 instead of being ignored.
73 - ->throw is now supported on Coro::State objects.
74 - clean up cctx creation code a bit.
75 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
76
774.9 Sat Nov 8 17:45:27 CET 2008
78 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
79 - (libcoro) no longer leak threads in the experimental pthread backend,
80 also speed it up considerably.
81 - (libcoro) do not rely on makecontext passing void *'s unscathed.
82 - fix compiletime dependencies on libcoro in the Makefile.
83 - cctx_count wasn't always updated properly.
84 - Coro::State::cctx_stacksize wasn't applied correctly.
85 - new function Coro::State::cctx_max_idle.
86 - the default max number of idle C contexts is now 4.
87 - (libcoro) try harder to get _setjmp/_longjmp.
88 - (libcoro) cleanup and extend the libcoro API to officially
89 allow the creation of empty source contexts.
90 - very experimental workaround for the totally broken netbsd platform.
91 - tried to hack around openbsd bugs.
92
934.804 Wed Nov 5 16:36:00 CET 2008
94 - Coro::Debug::new_unix_server would not create a non-blocking listening
95 socket, sometimes causing freezes.
96 - (libcoro) fix misaligned stack points for setjmp and assembly
97 methods, which can cause crashes on x86/x86_64 with a sufficiently
98 aggressive compiler.
99 - new function: Coro::Debug::new_tcp_server.
100 - move ->throw into the Coro class because it only works on coro objects.
101
1024.803 Mon Nov 3 17:16:12 CET 2008
103 - (libcoro) use a global asm statement to become independent of gcc
104 otpimisations for CORO_ASM (thanks to pippijn for the idea).
105 - try to workaround yet another broken bsd, this time dragonfly.
106
1074.802 Thu Oct 30 10:56:12 CET 2008
108 - support -fno-omit-frame-pointer on x86 with the assembly method.
109 - tune 01_unblock.t tests a bit.
110
1114.801 Wed Oct 22 18:33:37 CEST 2008
112 - improve readline speed for very long "lines".
113 - backport to 5.8.8.
114
1154.8 Thu Oct 2 13:34:40 CEST 2008
116 - new function Coro::AIO::aio_wait.
117 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
118 - greatly speed up and reduce memory usage of Coro::AIO requests.
119 - implement some other µ-optimisations.
120
1214.749 Mon Sep 29 14:40:12 CEST 2008
122 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
123
1244.748 Sat Sep 27 14:03:19 CEST 2008
125 - implement, but do not document, PerlIO::cede(granularity).
126 - Coro::Storable forgot to wrap Storable::pstore.
127 - work around the multitude of leaks and memory corruption
128 bugs in PerlIO::via by using our own C-level perliol. As a side
129 effect, Coro::Storable is now much, much, much faster.
130
1314.747 Tue Sep 23 01:59:41 CEST 2008
132 - fix a per-cv memleak (one empty array was leaked per
133 code reference).
134 - avoid a crash in coro->call|rss when the coroutine was already
135 destroyed (most noticably when using Coro::Debug::ps :)
136 - also protect *Storable::FILE.
137 - push up default storable granularity to 20ms.
138
1394.746 Sun Sep 21 03:22:20 CEST 2008
140 - be more insistent on locking Storable against reentrancy
141 in Coro::Storable.
142 - move swap_def?v and throw to Coro::State, as documented.
143
1444.745 Thu Jul 24 00:14:38 CEST 2008
145 - remove debugging code related to MgPV_nolen_const, also try to
146 make it compile with perl 5.8.6 (yes, apple apparently loves
147 outdated software). Reported by John S.
148
1494.744 Tue Jul 8 22:06:35 CEST 2008
150 - correctly provide default DIE/WARN handlers as documented.
151 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
152 implementations inside perl work fine for us.
153
1544.743 Mon Jun 16 00:21:57 CEST 2008
155 - when using Coro::EV without running EV::loop it could
156 result in busy-waiting for events, this has been fixed.
157 - reduce codesize and improve performance by using EV_DEFAULT_UC.
158
1594.742 Sat May 31 14:10:21 CEST 2008
160 - implement a workaround for (some) perl <5.8.8 versions.
161 - require EV 3.3+.
162
1634.741 Fri May 30 23:33:09 CEST 2008
164 - tell netbsd how utterly broken their imitation of an OS is
165 and refuse to build by default if pthreads are in use.
166 - switch to "s" method on all bsd's by default, as their ucontext
167 stuff seems just too broken.
168 - fix a bug in Coro::Select.
169
1704.74 Thu May 29 20:05:31 CEST 2008
171 - do not test Coro::LWP for lack of dependencies.
172 - do not test Coro::Select for lack of working perls.
173
1744.73 Thu May 29 2008
175 - fix a bug in Coro::EV which would cause it to block despite
176 there being runnable coroutines.
177 - sprinkle "no warnings" freely over everything, also suppress
178 warnings for some other modules.
179 - fix typo in WSAEWOULDBLOCK.
180
1814.72 Sun May 25 05:14:36 CEST 2008
182 - tweak META.yaml a bit, unfortunately, there is no documented way
183 to have optional dependencies with CPAN. doh :(
184 - avoid running some tests on windows because they would fail due to
185 perl bug (broken fork, broken pipes...).
186 - work around perl on windows bugs where perl returns undocumented
187 error codes for sysread, syswrite etc. by taking advantage
188 of AnyEvent's workaround for that problem.
189 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
190 a common perl implementation bug on windows.
191 - use unix domain sockets in testsuite to work around
192 common perl implementation bugs on widows (they are emulated by
193 tcp sockets on windows. ugh.)
194
1954.71 Sat May 24 20:01:27 CEST 2008
196 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
197 - take advantage of async name resolution of AnyEvent::Util.
198 - work around brutal inet_aton override in Coro::LWP.
199 - take advantage of the readyhook in Coro::EV, for smoother
200 scheduling.
201
2024.7 Sun May 11 00:32:19 CEST 2008
203 - completely reworked the Coro manpage.
204 - added Coro::AnyEvent, generic event loop integration.
205 - implement cancel, ready and kill commands in Coro::Debug.
206 - document find_coro in Coro::Debug.
207 - incompatible change: rename has_stack to has_cctx.
208 - Coro::AIO and Coro::BDB no longer force event model detection,
209 use AnyEvent::AIO and AnyEvent::BDB.
210
2114.6 Sat Apr 26 10:05:14 CEST 2008
212 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
213 by the Coro module. It was a mistake to have it in the first place.
214 - (experimental) support for activestate perl 5.10 (method "w").
215 - (experimental) support for strawberry perl (method "a").
216 - coro_sigelem_set did not return a value although it had to,
217 actual impact unknown.
218
2194.51 Mon Apr 14 13:28:27 CEST 2008
220 - make it compile again on 5.8.
221
2224.50 Thu Apr 10 09:43:17 CEST 2008
223 - I did it twice! (see 4.49).
224
2254.49 Sun Apr 6 21:23:31 CEST 2008
226 - grr, instead of compiling the recent changes on 5.10 only they
227 were compiled on 5.8 only.
228
2294.48 Sun Apr 6 20:36:46 CEST 2008
230 - allow coroutine switches during eval's under 5.10.x, as it seems
231 the parser is a per-interpreter option now, so this is safe
232 (this might fix the odd crashing bug).
233 - drop support for 5.9.x versions: they are dead, jim.
234
2354.47 Sun Apr 6 00:37:52 CEST 2008
236 - force cctx allocation on API calls: we know we need to force one
237 and gcc actually manages to confuse our heuristic nowadays,
238 leading to crashes and worse.
239 - document force_cctx.
240
2414.46 Fri Apr 4 22:05:43 CEST 2008
242 - upgrade libcoro, resulting in pthread-backend (which was only created
243 to fulfill the rules of the programming languages shootout).
244
2454.45 Thu Mar 13 11:55:36 CET 2008
246 - fix a file leaking bug in eg/mhyttpd that would allow
247 downloading of any file (reported by oesi).
248 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
249 (also add testcase).
250 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
251 apparently having loads of fun with that).
252 - implement $state->swap_defsv, ->swap_defav and document ->throw.
253
2544.4 Wed Feb 13 16:44:29 CET 2008
255 - only assume .cfi pseudo isns exist on GNU/Linux.
256 - add get_timed method to Coro::Channels.
257 - fixed Coro::Debug manpage.
258 - perl 5.11 compatbility improvement based on patch by
259 Andreas König.
260
2614.37 Sun Jan 20 11:25:23 CET 2008
262 - soften the check for an active parser for perl 5.10 (avoiding
263 "Coro::State::transfer called while parsing" in many cases).
264
2654.36 Sun Jan 13 10:53:56 CET 2008
266 - reset diehook when terminating from an async_pool as to not
267 trigger any __DIE__ handlers.
268
2694.35 Sun Jan 13 04:14:13 CET 2008
270 - "bt" debug command now displays any exceptions
271 from longmess and also skips the innermost
272 stackframes, giving more useufl output.
273 - allow backtraces in coroutines blocked in Coro::EV,
274 at a <1% speed hit.
275 - handle localising of $SIG{__WARN__} and __DIE__
276 properly (with a proper amount of dirty hacking).
277
2784.34 Sat Dec 22 17:49:53 CET 2007
279 - upgrade to EV version 2.0 API.
280
2814.33 Mon Dec 17 08:36:12 CET 2007
282 - make Coro::AIO etc. loadable in the absence of EV.
283
2844.32 Mon Dec 17 07:46:02 CET 2007
285 - majorly improved Coro::Handle's performance with Coro::EV.
286 - implemented the until now mythical Coro::BDB module.
287 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
288
2894.31 Wed Dec 5 12:32:39 CET 2007
290 - remove warn statement form Coro::Util.
291
2924.3 Tue Dec 4 20:33:14 CET 2007
293 - calls to the idle function could cause stack corruption
294 when the stack changed.
295 - do no longer rely on the presence of EV::DNS if EV is used
296 (because it is gone), but instead take avdantage of EV::ADNS
297 if available.
298 - add ($) prototypes to all functions in Coro::Storable.
299 - use a conventional (safer) idle callback in Coro::EV.
300 - do accept quickly in Coro::Debug to avoid endless loops.
301
3024.22 Fri Nov 30 16:04:04 CET 2007
303 - really use optimised versions for Event and EV in Coro::Util
304 and Coro::Handle.
305
3064.21 Sun Nov 25 10:48:59 CET 2007
307 - fix a spurious memory read.
308 - Coro::EV no longer keeps the eventloop "alive".
309
3104.2 Fri Nov 9 20:47:05 CET 2007
311 - enable/disable tracing from a new coroutine, not a pooled one.
312 - fix a memleak in Coro::Event.
313 - removed killall call from fork_eval.
314 - made sure store_fd is already loaded so that fork_eval
315 does not have to parse autoload in each subprocess.
316 - only use assembly method if -O switch is in $Config{optimize}.
317 - add (optional) Coro::EV module, so far the best event loop module
318 directly supported by Coro.
319 - if the event model is EV, use EV::DNS to resolve
320 stuff in Coro::Util.
321 - don't get confused by multiple event notifications in Coro::Handle.
322 - initial support for EV (libevent interface).
323 - require Event and EV using configure_requires, to force their existance.
324
3254.13 Wed Oct 24 07:26:45 CEST 2007
326 - add Coro::Storable::blocking_thaw.
327 - use a vastly more complicated technique to localise
328 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
329 - use a coroutine for the idle callback Coro::Event,
330 instead of running Event in the current coroutine context.
331 This also catches recursive invocations.
332 - actually report fork errors in gethostbyname and inet_aton.
333
3344.11 Thu Oct 11 02:40:24 CEST 2007
335 - port to threaded perls.
336
3374.1 Thu Oct 11 02:38:16 CEST 2007
338 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
339 be local to each coro (see Coro::State).
340 - incompatible change: for very deep reasons, cede and cede_notself
341 cannot return anything, so nothing will be returned.
342 - possibly bring back 5.10 compatibility (untested).
343 - work around stupid (and wrong) warning on 5.10 :(.
344 - overlay the saved state over the context stack. This saves
345 a few hundred bytes per coroutine on average and also
346 speeds up context switching a bit.
347 - further tune default stack sizes.
348 - (more) correctly calculate stack usage in coro_rss.
349 - Coro::Storable::blocking_* did not properly lock
350 resulting in races between coroutines.
351 - added Coro::Storable::guard.
352 - stopping to trace a coroutine could destroy the cctx of
353 an unrelated coroutine.
354 - explain the relationship between Perl and C coroutines in
355 more detail in Coro::State.
356 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
357 causing a fork per resolve. This also affected Coro::Socket.
358 - switch to a separate stack in $coro->call/eval to avoid
359 invalidating pointers.
360
3614.03 Sat Oct 6 21:24:00 CEST 2007
362 - added Coro::throw method.
363 - minor code cleanups.
364
3654.02 Sat Oct 6 02:36:47 CEST 2007
366 - fix a very minor per-coroutine memleak (a single codereference).
367 - fixed a bug where the currently in-use c context would be freed
368 prematurely (can happen only when programs change the stacksize
369 or use tracing).
370 - tracing can no longer keep a coro alive after it terminated.
371 - do static branch prediction in the common path for gcc. gives
372 about 2-5% speed improvement here.
373
3744.01 Fri Oct 5 22:10:49 CEST 2007
375 - instead of recreating *a* standard output handle we simply
376 use STDOUT, which is faster and hopefully more robust.
377
3784.0 Fri Oct 5 12:56:00 CEST 2007
379 - incompatibly changed Coro::Storable::freeze.
380 - major new feature: added Coro::Debug, for interactive coroutine
381 debugging, tracing and much more.
382 - major bug fix: unbelievable, but true: $_, $/ and many other
383 "saved" variables actually weren't being saved. This has been fixed,
384 of course, while increasing performance while losing all the save
385 flags.
386 - save flags are gone, and all the api functions dealing with them.
387 - added Coro::Semaphore::adjust.
388 - added Coro::Util::fork_eval.
389 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
390 - added Coro::killall.
391 - reduce initial stack sizes to allow for "micro-coroutines".
392 - better async_pool resource management, moved parts of async_pool
393 handling to XS (major speed improvement).
394 - actually croak before modifying important data structures.
395 - refuse to transfer while compiling.
396 - possibly support eval EXPR better now.
397 - enable assembly per default on linux+bsd x86+amd64.
398 - all internal members were renamed _something for easier subclassing.
399 - many minor tweaks.
400
4013.63 Wed May 16 14:10:06 CEST 2007
402 - implement handcoded assembly for x86/amd64 SVR ABI.
403
4043.62 Fri Apr 27 21:36:06 CEST 2007
405 - upgrade libcoro (which might set unwind info correctly).
406 - change default on linux to setjmp/longjmp.
407
4083.61 Thu Apr 19 12:36:18 CEST 2007
409 - Coro::Storable caused an endless loop when thawing invalid
410 pst's sometimes.
411 - use a Semaphore in Coro::Storable, as Storable doesn't
412 seem to be reentrant (although it is documented to
413 be threadsafe...).
414 - fix Coro::Signal to bring back the original unreliable
415 but stateful semantics.
416 - fixed a lot of typos in Coro.pm (patch submitted by David
417 Steinbrunner, which applied flawlessly).
418
4193.6 Sat Apr 14 17:13:31 CEST 2007
420 - added some bugfixes to get eg/myhttpd working again.
421 - added Coro::Storable for often-cede'ing freeze/thaw.
422 - try to do a clean exit when a coroutine calls exit
423 (EXPERIMENTAL).
424 - got rid of indirect call through _coro_init.
425 - updated the partly antique examples in eg/ to
426 work again and be a bit less magic, too.
427 - fixed Coro::Signal semantics to work as documented again.
428
4293.55 Sun Mar 25 01:20:47 CET 2007
430 - add SAVE_DEFFH to save the default filehandle and enable
431 it by default.
432 - finally move socket-operations from Coro::Socket to Coro::Handle
433 to be able to unblock foreign sockets.
434 - add Coro::State::save_also and guarded_save.
435 - add count accessor to Coro::Semaphore.
436 - add Coro::State::cctx_stacksize.
437 - just for the fun of it, do not rely on implicit context,
438 which can dramatically improve performance, but people
439 using windows-process-emulation perls do not care much about
440 performance.
441
4423.51 Sun Mar 4 14:18:04 CET 2007
443 - fixed a problem when you weakened references to Coro::State's
444 (patch by Yuval Kogman).
445
4463.501 Wed Feb 28 12:44:07 CET 2007
447 - rename some global symbols as macosx from hell redefines
448 them without asking.
449
4503.5 Tue Feb 13 20:22:53 CET 2007
451 - do AnyEvent model detection earlier, avoiding problems
452 caused by first using AnyEvent and later Coro::Event.
453 - implement and document Coro::Event event objects.
454 - fix a potential problem in Coro::Event causing crashes.
455 - initialise PL_comppad when creating a new coroutine,
456 avoids crashes on early coro destruction.
457
4583.41 Mon Jan 22 19:19:49 CET 2007
459 - readline on Coro::Handle did not support undefined $/,
460 nor did it deliver partial lines on EOF or error.
461 - implement malloc fallback for stack allocation because
462 stupid broken idiotic OSX has a stupid broken
463 idiotic fits-the-whole-os mmap "implementation" and
464 my dick feels longer if Coro is portable even to
465 obsolete platforms.
466
4673.4 Fri Jan 19 21:52:54 CET 2007
468 - remove t/09_timer.t, as it isn't really testing much
469 but was rather flaky in practise.
470 - async_pool coro would keep arguments and callback alive until
471 it was reused.
472 - cancellation of a coroutine could cause spurious idle calls
473 in cede_notself.
474
4753.3 Sat Jan 6 03:45:00 CET 2007
476 - implement $coro->on_destroy.
477 - Coro::Event blocking semantics have been changed,
478 documented and - hopefully - improved.
5 - fix nice adding, not subtracting, from priority. 479 - fix nice adding, not subtracting, from priority.
480 - fix ->prio and api_is_ready (patch by Mark Hinds).
481 - fixed an assert ("... == prev__cctx->idle_te")
482 that could errronously trigger.
483 - fix various large and small memleaks.
484 - use a (hopefully) more stable cancel implementation
485 that immediately frees the coroutine data.
486 - cede/cede_notself return a status now.
487 - added Coro::guard function.
488 - added a global coroutine pool for jobs (on my machine,
489 I can create and execute 48k simple coros/s with async,
490 and 128k coros with async_pool).
491 - Coro::AIO now uses the coroutine priority as io priority.
6 492
73.2 Fri Dec 22 05:07:09 CET 2006 4933.2 Fri Dec 22 05:07:09 CET 2006
8 - improve portability to slightly older perls. 494 - improve portability to slightly older perls.
9 - use cleaner coroutine destruction. 495 - use cleaner coroutine destruction.
10 - simplify configuration for users. 496 - simplify configuration for users.

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