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Comparing Coro/Changes (file contents):
Revision 1.153 by root, Fri Nov 24 00:31:21 2006 UTC vs.
Revision 1.403 by root, Tue Nov 11 03:30:21 2008 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: check wether stack-sharing is still effective 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: more effective stack sharing by having one "default stack" for "simple" coroutines? 4TODO: maybe implement a default message channel, very much like Erlang's
5TODO: verify exception frame changes and force stack copies? 5 actor model (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)).
6 7
84.911 Tue Nov 11 04:26:17 CET 2008
9 - "port" to threaded perls.
10
114.91 Mon Nov 10 05:36:38 CET 2008
12 - the ->throw exception object no longer leaks.
13 - creating a new cctx leaked a scopestack entry (memleak).
14 - new coroutines didn't get created with a zero flags field
15 (unknown impact).
16 - calling ->throw on a not-yet-started coroutine should now work
17 instead of being ignored.
18 - ->throw is now supported on Coro::State objects.
19 - clean up cctx creation code a bit.
20 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
21
224.9 Sat Nov 8 17:45:27 CET 2008
23 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
24 - (libcoro) no longer leak threads in the experimental pthread backend,
25 also speed it up considerably.
26 - (libcoro) do not rely on makecontext passing void *'s unscathed.
27 - fix compiletime dependencies on libcoro in the Makefile.
28 - cctx_count wasn't always updated properly.
29 - Coro::State::cctx_stacksize wasn't applied correctly.
30 - new function Coro::State::cctx_max_idle.
31 - the default max number of idle C contexts is now 4.
32 - (libcoro) try harder to get _setjmp/_longjmp.
33 - (libcoro) cleanup and extend the libcoro API to officially
34 allow the creation of empty source contexts.
35 - very experimental workaround for the totally broken netbsd platform.
36 - tried to hack around openbsd bugs.
37
384.804 Wed Nov 5 16:36:00 CET 2008
39 - Coro::Debug::new_unix_server would not create a non-blocking listening
40 socket, sometimes causing freezes.
41 - (libcoro) fix misaligned stack points for setjmp and assembly
42 methods, which can cause crashes on x86/x86_64 with a sufficiently
43 aggressive compiler.
44 - new function: Coro::Debug::new_tcp_server.
45 - move ->throw into the Coro class because it only works on coro objects.
46
474.803 Mon Nov 3 17:16:12 CET 2008
48 - (libcoro) use a global asm statement to become independent of gcc
49 otpimisations for CORO_ASM (thanks to pippijn for the idea).
50 - try to workaround yet another broken bsd, this time dragonfly.
51
524.802 Thu Oct 30 10:56:12 CET 2008
53 - support -fno-omit-frame-pointer on x86 with the assembly method.
54 - tune 01_unblock.t tests a bit.
55
564.801 Wed Oct 22 18:33:37 CEST 2008
57 - improve readline speed for very long "lines".
58 - backport to 5.8.8.
59
604.8 Thu Oct 2 13:34:40 CEST 2008
61 - new function Coro::AIO::aio_wait.
62 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
63 - greatly speed up and reduce memory usage of Coro::AIO requests.
64 - implement some other µ-optimisations.
65
664.749 Mon Sep 29 14:40:12 CEST 2008
67 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
68
694.748 Sat Sep 27 14:03:19 CEST 2008
70 - implement, but do not document, PerlIO::cede(granularity).
71 - Coro::Storable forgot to wrap Storable::pstore.
72 - work around the multitude of leaks and memory corruption
73 bugs in PerlIO::via by using our own C-level perliol. As a side
74 effect, Coro::Storable is now much, much, much faster.
75
764.747 Tue Sep 23 01:59:41 CEST 2008
77 - fix a per-cv memleak (one empty array was leaked per
78 code reference).
79 - avoid a crash in coro->call|rss when the coroutine was already
80 destroyed (most noticably when using Coro::Debug::ps :)
81 - also protect *Storable::FILE.
82 - push up default storable granularity to 20ms.
83
844.746 Sun Sep 21 03:22:20 CEST 2008
85 - be more insistent on locking Storable against reentrancy
86 in Coro::Storable.
87 - move swap_def?v and throw to Coro::State, as documented.
88
894.745 Thu Jul 24 00:14:38 CEST 2008
90 - remove debugging code related to MgPV_nolen_const, also try to
91 make it compile with perl 5.8.6 (yes, apple apparently loves
92 outdated software). Reported by John S.
93
944.744 Tue Jul 8 22:06:35 CEST 2008
95 - correctly provide default DIE/WARN handlers as documented.
96 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
97 implementations inside perl work fine for us.
98
994.743 Mon Jun 16 00:21:57 CEST 2008
100 - when using Coro::EV without running EV::loop it could
101 result in busy-waiting for events, this has been fixed.
102 - reduce codesize and improve performance by using EV_DEFAULT_UC.
103
1044.742 Sat May 31 14:10:21 CEST 2008
105 - implement a workaround for (some) perl <5.8.8 versions.
106 - require EV 3.3+.
107
1084.741 Fri May 30 23:33:09 CEST 2008
109 - tell netbsd how utterly broken their imitation of an OS is
110 and refuse to build by default if pthreads are in use.
111 - switch to "s" method on all bsd's by default, as their ucontext
112 stuff seems just too broken.
113 - fix a bug in Coro::Select.
114
1154.74 Thu May 29 20:05:31 CEST 2008
116 - do not test Coro::LWP for lack of dependencies.
117 - do not test Coro::Select for lack of working perls.
118
1194.73 Thu May 29 2008
120 - fix a bug in Coro::EV which would cause it to block despite
121 there being runnable coroutines.
122 - sprinkle "no warnings" freely over everything, also suppress
123 warnings for some other modules.
124 - fix typo in WSAEWOULDBLOCK.
125
1264.72 Sun May 25 05:14:36 CEST 2008
127 - tweak META.yaml a bit, unfortunately, there is no documented way
128 to have optional dependencies with CPAN. doh :(
129 - avoid running some tests on windows because they would fail due to
130 perl bug (broken fork, broken pipes...).
131 - work around perl on windows bugs where perl returns undocumented
132 error codes for sysread, syswrite etc. by taking advantage
133 of AnyEvent's workaround for that problem.
134 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
135 a common perl implementation bug on windows.
136 - use unix domain sockets in testsuite to work around
137 common perl implementation bugs on widows (they are emulated by
138 tcp sockets on windows. ugh.)
139
1404.71 Sat May 24 20:01:27 CEST 2008
141 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
142 - take advantage of async name resolution of AnyEvent::Util.
143 - work around brutal inet_aton override in Coro::LWP.
144 - take advantage of the readyhook in Coro::EV, for smoother
145 scheduling.
146
1474.7 Sun May 11 00:32:19 CEST 2008
148 - completely reworked the Coro manpage.
149 - added Coro::AnyEvent, generic event loop integration.
150 - implement cancel, ready and kill commands in Coro::Debug.
151 - document find_coro in Coro::Debug.
152 - incompatible change: rename has_stack to has_cctx.
153 - Coro::AIO and Coro::BDB no longer force event model detection,
154 use AnyEvent::AIO and AnyEvent::BDB.
155
1564.6 Sat Apr 26 10:05:14 CEST 2008
157 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
158 by the Coro module. It was a mistake to have it in the first place.
159 - (experimental) support for activestate perl 5.10 (method "w").
160 - (experimental) support for strawberry perl (method "a").
161 - coro_sigelem_set did not return a value although it had to,
162 actual impact unknown.
163
1644.51 Mon Apr 14 13:28:27 CEST 2008
165 - make it compile again on 5.8.
166
1674.50 Thu Apr 10 09:43:17 CEST 2008
168 - I did it twice! (see 4.49).
169
1704.49 Sun Apr 6 21:23:31 CEST 2008
171 - grr, instead of compiling the recent changes on 5.10 only they
172 were compiled on 5.8 only.
173
1744.48 Sun Apr 6 20:36:46 CEST 2008
175 - allow coroutine switches during eval's under 5.10.x, as it seems
176 the parser is a per-interpreter option now, so this is safe
177 (this might fix the odd crashing bug).
178 - drop support for 5.9.x versions: they are dead, jim.
179
1804.47 Sun Apr 6 00:37:52 CEST 2008
181 - force cctx allocation on API calls: we know we need to force one
182 and gcc actually manages to confuse our heuristic nowadays,
183 leading to crashes and worse.
184 - document force_cctx.
185
1864.46 Fri Apr 4 22:05:43 CEST 2008
187 - upgrade libcoro, resulting in pthread-backend (which was only created
188 to fulfill the rules of the programming languages shootout).
189
1904.45 Thu Mar 13 11:55:36 CET 2008
191 - fix a file leaking bug in eg/mhyttpd that would allow
192 downloading of any file (reported by oesi).
193 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
194 (also add testcase).
195 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
196 apparently having loads of fun with that).
197 - implement $state->swap_defsv, ->swap_defav and document ->throw.
198
1994.4 Wed Feb 13 16:44:29 CET 2008
200 - only assume .cfi pseudo isns exist on GNU/Linux.
201 - add get_timed method to Coro::Channels.
202 - fixed Coro::Debug manpage.
203 - perl 5.11 compatbility improvement based on patch by
204 Andreas König.
205
2064.37 Sun Jan 20 11:25:23 CET 2008
207 - soften the check for an active parser for perl 5.10 (avoiding
208 "Coro::State::transfer called while parsing" in many cases).
209
2104.36 Sun Jan 13 10:53:56 CET 2008
211 - reset diehook when terminating from an async_pool as to not
212 trigger any __DIE__ handlers.
213
2144.35 Sun Jan 13 04:14:13 CET 2008
215 - "bt" debug command now displays any exceptions
216 from longmess and also skips the innermost
217 stackframes, giving more useufl output.
218 - allow backtraces in coroutines blocked in Coro::EV,
219 at a <1% speed hit.
220 - handle localising of $SIG{__WARN__} and __DIE__
221 properly (with a proper amount of dirty hacking).
222
2234.34 Sat Dec 22 17:49:53 CET 2007
224 - upgrade to EV version 2.0 API.
225
2264.33 Mon Dec 17 08:36:12 CET 2007
227 - make Coro::AIO etc. loadable in the absence of EV.
228
2294.32 Mon Dec 17 07:46:02 CET 2007
230 - majorly improved Coro::Handle's performance with Coro::EV.
231 - implemented the until now mythical Coro::BDB module.
232 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
233
2344.31 Wed Dec 5 12:32:39 CET 2007
235 - remove warn statement form Coro::Util.
236
2374.3 Tue Dec 4 20:33:14 CET 2007
238 - calls to the idle function could cause stack corruption
239 when the stack changed.
240 - do no longer rely on the presence of EV::DNS if EV is used
241 (because it is gone), but instead take avdantage of EV::ADNS
242 if available.
243 - add ($) prototypes to all functions in Coro::Storable.
244 - use a conventional (safer) idle callback in Coro::EV.
245 - do accept quickly in Coro::Debug to avoid endless loops.
246
2474.22 Fri Nov 30 16:04:04 CET 2007
248 - really use optimised versions for Event and EV in Coro::Util
249 and Coro::Handle.
250
2514.21 Sun Nov 25 10:48:59 CET 2007
252 - fix a spurious memory read.
253 - Coro::EV no longer keeps the eventloop "alive".
254
2554.2 Fri Nov 9 20:47:05 CET 2007
256 - enable/disable tracing from a new coroutine, not a pooled one.
257 - fix a memleak in Coro::Event.
258 - removed killall call from fork_eval.
259 - made sure store_fd is already loaded so that fork_eval
260 does not have to parse autoload in each subprocess.
261 - only use assembly method if -O switch is in $Config{optimize}.
262 - add (optional) Coro::EV module, so far the best event loop module
263 directly supported by Coro.
264 - if the event model is EV, use EV::DNS to resolve
265 stuff in Coro::Util.
266 - don't get confused by multiple event notifications in Coro::Handle.
267 - initial support for EV (libevent interface).
268 - require Event and EV using configure_requires, to force their existance.
269
2704.13 Wed Oct 24 07:26:45 CEST 2007
271 - add Coro::Storable::blocking_thaw.
272 - use a vastly more complicated technique to localise
273 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
274 - use a coroutine for the idle callback Coro::Event,
275 instead of running Event in the current coroutine context.
276 This also catches recursive invocations.
277 - actually report fork errors in gethostbyname and inet_aton.
278
2794.11 Thu Oct 11 02:40:24 CEST 2007
280 - port to threaded perls.
281
2824.1 Thu Oct 11 02:38:16 CEST 2007
283 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
284 be local to each coro (see Coro::State).
285 - incompatible change: for very deep reasons, cede and cede_notself
286 cannot return anything, so nothing will be returned.
287 - possibly bring back 5.10 compatibility (untested).
288 - work around stupid (and wrong) warning on 5.10 :(.
289 - overlay the saved state over the context stack. This saves
290 a few hundred bytes per coroutine on average and also
291 speeds up context switching a bit.
292 - further tune default stack sizes.
293 - (more) correctly calculate stack usage in coro_rss.
294 - Coro::Storable::blocking_* did not properly lock
295 resulting in races between coroutines.
296 - added Coro::Storable::guard.
297 - stopping to trace a coroutine could destroy the cctx of
298 an unrelated coroutine.
299 - explain the relationship between Perl and C coroutines in
300 more detail in Coro::State.
301 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
302 causing a fork per resolve. This also affected Coro::Socket.
303 - switch to a separate stack in $coro->call/eval to avoid
304 invalidating pointers.
305
3064.03 Sat Oct 6 21:24:00 CEST 2007
307 - added Coro::throw method.
308 - minor code cleanups.
309
3104.02 Sat Oct 6 02:36:47 CEST 2007
311 - fix a very minor per-coroutine memleak (a single codereference).
312 - fixed a bug where the currently in-use c context would be freed
313 prematurely (can happen only when programs change the stacksize
314 or use tracing).
315 - tracing can no longer keep a coro alive after it terminated.
316 - do static branch prediction in the common path for gcc. gives
317 about 2-5% speed improvement here.
318
3194.01 Fri Oct 5 22:10:49 CEST 2007
320 - instead of recreating *a* standard output handle we simply
321 use STDOUT, which is faster and hopefully more robust.
322
3234.0 Fri Oct 5 12:56:00 CEST 2007
324 - incompatibly changed Coro::Storable::freeze.
325 - major new feature: added Coro::Debug, for interactive coroutine
326 debugging, tracing and much more.
327 - major bug fix: unbelievable, but true: $_, $/ and many other
328 "saved" variables actually weren't being saved. This has been fixed,
329 of course, while increasing performance while losing all the save
330 flags.
331 - save flags are gone, and all the api functions dealing with them.
332 - added Coro::Semaphore::adjust.
333 - added Coro::Util::fork_eval.
334 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
335 - added Coro::killall.
336 - reduce initial stack sizes to allow for "micro-coroutines".
337 - better async_pool resource management, moved parts of async_pool
338 handling to XS (major speed improvement).
339 - actually croak before modifying important data structures.
340 - refuse to transfer while compiling.
341 - possibly support eval EXPR better now.
342 - enable assembly per default on linux+bsd x86+amd64.
343 - all internal members were renamed _something for easier subclassing.
344 - many minor tweaks.
345
3463.63 Wed May 16 14:10:06 CEST 2007
347 - implement handcoded assembly for x86/amd64 SVR ABI.
348
3493.62 Fri Apr 27 21:36:06 CEST 2007
350 - upgrade libcoro (which might set unwind info correctly).
351 - change default on linux to setjmp/longjmp.
352
3533.61 Thu Apr 19 12:36:18 CEST 2007
354 - Coro::Storable caused an endless loop when thawing invalid
355 pst's sometimes.
356 - use a Semaphore in Coro::Storable, as Storable doesn't
357 seem to be reentrant (although it is documented to
358 be threadsafe...).
359 - fix Coro::Signal to bring back the original unreliable
360 but stateful semantics.
361 - fixed a lot of typos in Coro.pm (patch submitted by David
362 Steinbrunner, which applied flawlessly).
363
3643.6 Sat Apr 14 17:13:31 CEST 2007
365 - added some bugfixes to get eg/myhttpd working again.
366 - added Coro::Storable for often-cede'ing freeze/thaw.
367 - try to do a clean exit when a coroutine calls exit
368 (EXPERIMENTAL).
369 - got rid of indirect call through _coro_init.
370 - updated the partly antique examples in eg/ to
371 work again and be a bit less magic, too.
372 - fixed Coro::Signal semantics to work as documented again.
373
3743.55 Sun Mar 25 01:20:47 CET 2007
375 - add SAVE_DEFFH to save the default filehandle and enable
376 it by default.
377 - finally move socket-operations from Coro::Socket to Coro::Handle
378 to be able to unblock foreign sockets.
379 - add Coro::State::save_also and guarded_save.
380 - add count accessor to Coro::Semaphore.
381 - add Coro::State::cctx_stacksize.
382 - just for the fun of it, do not rely on implicit context,
383 which can dramatically improve performance, but people
384 using windows-process-emulation perls do not care much about
385 performance.
386
3873.51 Sun Mar 4 14:18:04 CET 2007
388 - fixed a problem when you weakened references to Coro::State's
389 (patch by Yuval Kogman).
390
3913.501 Wed Feb 28 12:44:07 CET 2007
392 - rename some global symbols as macosx from hell redefines
393 them without asking.
394
3953.5 Tue Feb 13 20:22:53 CET 2007
396 - do AnyEvent model detection earlier, avoiding problems
397 caused by first using AnyEvent and later Coro::Event.
398 - implement and document Coro::Event event objects.
399 - fix a potential problem in Coro::Event causing crashes.
400 - initialise PL_comppad when creating a new coroutine,
401 avoids crashes on early coro destruction.
402
4033.41 Mon Jan 22 19:19:49 CET 2007
404 - readline on Coro::Handle did not support undefined $/,
405 nor did it deliver partial lines on EOF or error.
406 - implement malloc fallback for stack allocation because
407 stupid broken idiotic OSX has a stupid broken
408 idiotic fits-the-whole-os mmap "implementation" and
409 my dick feels longer if Coro is portable even to
410 obsolete platforms.
411
4123.4 Fri Jan 19 21:52:54 CET 2007
413 - remove t/09_timer.t, as it isn't really testing much
414 but was rather flaky in practise.
415 - async_pool coro would keep arguments and callback alive until
416 it was reused.
417 - cancellation of a coroutine could cause spurious idle calls
418 in cede_notself.
419
4203.3 Sat Jan 6 03:45:00 CET 2007
421 - implement $coro->on_destroy.
422 - Coro::Event blocking semantics have been changed,
423 documented and - hopefully - improved.
424 - fix nice adding, not subtracting, from priority.
425 - fix ->prio and api_is_ready (patch by Mark Hinds).
426 - fixed an assert ("... == prev__cctx->idle_te")
427 that could errronously trigger.
428 - fix various large and small memleaks.
429 - use a (hopefully) more stable cancel implementation
430 that immediately frees the coroutine data.
431 - cede/cede_notself return a status now.
432 - added Coro::guard function.
433 - added a global coroutine pool for jobs (on my machine,
434 I can create and execute 48k simple coros/s with async,
435 and 128k coros with async_pool).
436 - Coro::AIO now uses the coroutine priority as io priority.
437
4383.2 Fri Dec 22 05:07:09 CET 2006
439 - improve portability to slightly older perls.
440 - use cleaner coroutine destruction.
441 - simplify configuration for users.
442 - optionally (unrecommended) prefer perl functions over
443 their coro replacements.
444
4453.11 Tue Dec 5 13:11:24 CET 2006
446 - fixed some bogus assert's, but as perl.h disables assert even
447 without NDEBUG (thank you very much), not too many people should
448 notice (that did include myself). Andreas König noticed, though :)
449 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
450 it. Also noticed by Andreas König :)
451 - save/restore tainted status.
452 - verified to pass the testsuite on my 5.9.5.
453
4543.1 Mon Dec 4 23:03:40 CET 2006
455 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
456 - incompatible change: transfer flags are now per-state.
457 - give a better error message on deadlock.
458 - document Coro::nready.
459 - enhanced testsuite.
460
4613.01 Sun Dec 3 23:47:42 CET 2006
462 - forgot to include Coro::Timer.
463
4643.0 Sun Dec 3 22:57:25 CET 2006
465 - the "FINALLY COMPLETELY STABLE" release (coming soon:
466 the "FAMOUS LAST WORDS" release).
467 - implement a new stack sharing algorithm, which uses a stack
468 pool (size currently hardcoded).
469 - make stack sharing mandatory (it no longer uses a heuristic).
470 - eval/die no longer cause weird problems under heavy use.
7 - Coro::Event could cause livelocks if it was used but 471 - Coro::Event could cause livelocks if it was used but
8 Event watchers were used directly. 472 no Coro::Event watchers were used.
473 - Coro::Event now uses asynccheck as prepare does not
474 check for changed watchers.
475 - Coro::Event allows multiple waiting coros and will wake up one
476 per event.
9 - Coro::Event should be cleaner and more efficient now. 477 - Coro::Event should be cleaner and more efficient now.
10 - minor documentation cleanup. 478 - new utility function Coro::unblock_sub.
479 - document the sad fact that Event is no longer reentrant.
480 - putting a coroutine into the ready queue twice could under
481 some circumstances lead to stack corruption.
482 - minor incompatibility: subclassing Coro::State is supported
483 directly now without going through a _coro_state member.
484 - state/coro switching is much faster now.
11 - very minor optimisations and cleanups. 485 - very minor optimisations and code/documentation cleanup.
12 - avoid problems due to compiler inlining. 486 - avoid problems due to compiler inlining.
487 - removed timers from Coro::Timer -> use AnyEvent instead.
488 - replaced Coro::idle coroutine by (cleaner) idle handler.
489 - updated to newest libcoro.
490 - implement enhanced support for valgrind.
491 - implement is_ready and return value for ready.
492 - removed Coro::Cont, it was a misnomer (it's generators),
493 and it was somewhat annoying to get it right. Will come back
494 if somebody asks for it :)
495 - many ->wait methods and Coro::Event could return
496 spuriously without the event having happened.
13 497
142.5 Tue Nov 7 12:22:33 CET 2006 4982.5 Tue Nov 7 12:22:33 CET 2006
15 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket 499 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
16 use AnyEvent, moved them to Coro/. 500 use AnyEvent, moved them to Coro/.
17 - added Coro::LWP which contains all the uglyness required to 501 - added Coro::LWP which contains all the uglyness required to

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