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Comparing Coro/Changes (file contents):
Revision 1.178 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.427 by root, Tue Nov 18 05:51:38 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)).
7
8TODO: testcancel
9TODO: aio
10TODO: Coro::Semaphore
11TODO: trow disturbs cleanup path inside pp_slf?
12TODO: throw special-case in transfer?
13TODO: document throw limitations
145.0
15 - NEW ARCHITECTURE: use the latest 4.x version if you experience
16 stability issues.
17 - bump API version to 7 - all dependents must be recompiled.
18 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
19 - async_pool did free a scalar value twice
20 ("Attempt to unreference...").
21 - fix a longstanding bug where calling terminate on a coro that
22 was waiting for a semaphore that was just becoming available
23 would cause a deadlock (semaphore would get into a state where
24 it was available but waiters were waiting(.
25 - avoid deadlock in Coro::Channel if maxsize == 1 (Richard Hundt).
26 - perl's process emulation is now not even theoretically supported
27 anymore.
28 - directly patch the entersub opcode calling SLF functions (cede,
29 transfer and so on). this does speed up context switching, but
30 more importanly, it frees us from the hardcoded behaviour of
31 entersub, so we might actually be able to return something from
32 those functions and atcually create new ones.
33 - take advantage of __builtin_frame_address on gcc.
34 - expose THX in coroapi (not sure whether this was a wise decision,
35 as "threaded" perls are running at half speed anyways).
36 - implement execute_slf (schedule-like-function) interface that makes
37 it possible to implement schedule-like-functions in XS.
38 - use new SLF interface to massively speed up Coro::EV by roughly a
39 factor of two.
40 - removed timed_down and timed_guard functions - they were not being
41 used anyways and should be replaced by a more generic mechanism -
42 and were annoying to support anyways :)
43 - used new SLF interface to massively speed up Coro::Semaphore by a
44 factor of three.
45 - used new SLF interface to speed up Coro::AIO by roughly a factor of
46 four and reduce its memory usage considerably.
47 - forgot to include Coro/libcoro/README in the dist for all these years.
48 - work around a freebsd pthreads bug (manual testcancel is required as
49 pthread_cond_wait isn't a cancellation point on freebsd).
50
514.913 Sat Nov 15 07:58:28 CET 2008
52 - async_pool did free a scalar value twice
53 ("Attempt to unreference...").
54
554.912 Thu Nov 13 18:31:23 CET 2008
56 - minor cleanups.
57 - use much larger stacks on linux and perl < 5.8.8.
58 - Coro::Debug::new_unix_server did not unlink the socket
59 when destroyed.
60
614.911 Tue Nov 11 04:26:17 CET 2008
62 - "port" to threaded perls.
63
644.91 Mon Nov 10 05:36:38 CET 2008
65 - the ->throw exception object no longer leaks.
66 - creating a new cctx leaked a scopestack entry (memleak).
67 - new coroutines didn't get created with a zero flags field
68 (unknown impact).
69 - calling ->throw on a not-yet-started coroutine should now work
70 instead of being ignored.
71 - ->throw is now supported on Coro::State objects.
72 - clean up cctx creation code a bit.
73 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
74
754.9 Sat Nov 8 17:45:27 CET 2008
76 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
77 - (libcoro) no longer leak threads in the experimental pthread backend,
78 also speed it up considerably.
79 - (libcoro) do not rely on makecontext passing void *'s unscathed.
80 - fix compiletime dependencies on libcoro in the Makefile.
81 - cctx_count wasn't always updated properly.
82 - Coro::State::cctx_stacksize wasn't applied correctly.
83 - new function Coro::State::cctx_max_idle.
84 - the default max number of idle C contexts is now 4.
85 - (libcoro) try harder to get _setjmp/_longjmp.
86 - (libcoro) cleanup and extend the libcoro API to officially
87 allow the creation of empty source contexts.
88 - very experimental workaround for the totally broken netbsd platform.
89 - tried to hack around openbsd bugs.
90
914.804 Wed Nov 5 16:36:00 CET 2008
92 - Coro::Debug::new_unix_server would not create a non-blocking listening
93 socket, sometimes causing freezes.
94 - (libcoro) fix misaligned stack points for setjmp and assembly
95 methods, which can cause crashes on x86/x86_64 with a sufficiently
96 aggressive compiler.
97 - new function: Coro::Debug::new_tcp_server.
98 - move ->throw into the Coro class because it only works on coro objects.
99
1004.803 Mon Nov 3 17:16:12 CET 2008
101 - (libcoro) use a global asm statement to become independent of gcc
102 otpimisations for CORO_ASM (thanks to pippijn for the idea).
103 - try to workaround yet another broken bsd, this time dragonfly.
104
1054.802 Thu Oct 30 10:56:12 CET 2008
106 - support -fno-omit-frame-pointer on x86 with the assembly method.
107 - tune 01_unblock.t tests a bit.
108
1094.801 Wed Oct 22 18:33:37 CEST 2008
110 - improve readline speed for very long "lines".
111 - backport to 5.8.8.
112
1134.8 Thu Oct 2 13:34:40 CEST 2008
114 - new function Coro::AIO::aio_wait.
115 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
116 - greatly speed up and reduce memory usage of Coro::AIO requests.
117 - implement some other µ-optimisations.
118
1194.749 Mon Sep 29 14:40:12 CEST 2008
120 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
121
1224.748 Sat Sep 27 14:03:19 CEST 2008
123 - implement, but do not document, PerlIO::cede(granularity).
124 - Coro::Storable forgot to wrap Storable::pstore.
125 - work around the multitude of leaks and memory corruption
126 bugs in PerlIO::via by using our own C-level perliol. As a side
127 effect, Coro::Storable is now much, much, much faster.
128
1294.747 Tue Sep 23 01:59:41 CEST 2008
130 - fix a per-cv memleak (one empty array was leaked per
131 code reference).
132 - avoid a crash in coro->call|rss when the coroutine was already
133 destroyed (most noticably when using Coro::Debug::ps :)
134 - also protect *Storable::FILE.
135 - push up default storable granularity to 20ms.
136
1374.746 Sun Sep 21 03:22:20 CEST 2008
138 - be more insistent on locking Storable against reentrancy
139 in Coro::Storable.
140 - move swap_def?v and throw to Coro::State, as documented.
141
1424.745 Thu Jul 24 00:14:38 CEST 2008
143 - remove debugging code related to MgPV_nolen_const, also try to
144 make it compile with perl 5.8.6 (yes, apple apparently loves
145 outdated software). Reported by John S.
146
1474.744 Tue Jul 8 22:06:35 CEST 2008
148 - correctly provide default DIE/WARN handlers as documented.
149 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
150 implementations inside perl work fine for us.
151
1524.743 Mon Jun 16 00:21:57 CEST 2008
153 - when using Coro::EV without running EV::loop it could
154 result in busy-waiting for events, this has been fixed.
155 - reduce codesize and improve performance by using EV_DEFAULT_UC.
156
1574.742 Sat May 31 14:10:21 CEST 2008
158 - implement a workaround for (some) perl <5.8.8 versions.
159 - require EV 3.3+.
160
1614.741 Fri May 30 23:33:09 CEST 2008
162 - tell netbsd how utterly broken their imitation of an OS is
163 and refuse to build by default if pthreads are in use.
164 - switch to "s" method on all bsd's by default, as their ucontext
165 stuff seems just too broken.
166 - fix a bug in Coro::Select.
167
1684.74 Thu May 29 20:05:31 CEST 2008
169 - do not test Coro::LWP for lack of dependencies.
170 - do not test Coro::Select for lack of working perls.
171
1724.73 Thu May 29 2008
173 - fix a bug in Coro::EV which would cause it to block despite
174 there being runnable coroutines.
175 - sprinkle "no warnings" freely over everything, also suppress
176 warnings for some other modules.
177 - fix typo in WSAEWOULDBLOCK.
178
1794.72 Sun May 25 05:14:36 CEST 2008
180 - tweak META.yaml a bit, unfortunately, there is no documented way
181 to have optional dependencies with CPAN. doh :(
182 - avoid running some tests on windows because they would fail due to
183 perl bug (broken fork, broken pipes...).
184 - work around perl on windows bugs where perl returns undocumented
185 error codes for sysread, syswrite etc. by taking advantage
186 of AnyEvent's workaround for that problem.
187 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
188 a common perl implementation bug on windows.
189 - use unix domain sockets in testsuite to work around
190 common perl implementation bugs on widows (they are emulated by
191 tcp sockets on windows. ugh.)
192
1934.71 Sat May 24 20:01:27 CEST 2008
194 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
195 - take advantage of async name resolution of AnyEvent::Util.
196 - work around brutal inet_aton override in Coro::LWP.
197 - take advantage of the readyhook in Coro::EV, for smoother
198 scheduling.
199
2004.7 Sun May 11 00:32:19 CEST 2008
201 - completely reworked the Coro manpage.
202 - added Coro::AnyEvent, generic event loop integration.
203 - implement cancel, ready and kill commands in Coro::Debug.
204 - document find_coro in Coro::Debug.
205 - incompatible change: rename has_stack to has_cctx.
206 - Coro::AIO and Coro::BDB no longer force event model detection,
207 use AnyEvent::AIO and AnyEvent::BDB.
208
2094.6 Sat Apr 26 10:05:14 CEST 2008
210 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
211 by the Coro module. It was a mistake to have it in the first place.
212 - (experimental) support for activestate perl 5.10 (method "w").
213 - (experimental) support for strawberry perl (method "a").
214 - coro_sigelem_set did not return a value although it had to,
215 actual impact unknown.
216
2174.51 Mon Apr 14 13:28:27 CEST 2008
218 - make it compile again on 5.8.
219
2204.50 Thu Apr 10 09:43:17 CEST 2008
221 - I did it twice! (see 4.49).
222
2234.49 Sun Apr 6 21:23:31 CEST 2008
224 - grr, instead of compiling the recent changes on 5.10 only they
225 were compiled on 5.8 only.
226
2274.48 Sun Apr 6 20:36:46 CEST 2008
228 - allow coroutine switches during eval's under 5.10.x, as it seems
229 the parser is a per-interpreter option now, so this is safe
230 (this might fix the odd crashing bug).
231 - drop support for 5.9.x versions: they are dead, jim.
232
2334.47 Sun Apr 6 00:37:52 CEST 2008
234 - force cctx allocation on API calls: we know we need to force one
235 and gcc actually manages to confuse our heuristic nowadays,
236 leading to crashes and worse.
237 - document force_cctx.
238
2394.46 Fri Apr 4 22:05:43 CEST 2008
240 - upgrade libcoro, resulting in pthread-backend (which was only created
241 to fulfill the rules of the programming languages shootout).
242
2434.45 Thu Mar 13 11:55:36 CET 2008
244 - fix a file leaking bug in eg/mhyttpd that would allow
245 downloading of any file (reported by oesi).
246 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
247 (also add testcase).
248 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
249 apparently having loads of fun with that).
250 - implement $state->swap_defsv, ->swap_defav and document ->throw.
251
2524.4 Wed Feb 13 16:44:29 CET 2008
253 - only assume .cfi pseudo isns exist on GNU/Linux.
254 - add get_timed method to Coro::Channels.
255 - fixed Coro::Debug manpage.
256 - perl 5.11 compatbility improvement based on patch by
257 Andreas König.
258
2594.37 Sun Jan 20 11:25:23 CET 2008
260 - soften the check for an active parser for perl 5.10 (avoiding
261 "Coro::State::transfer called while parsing" in many cases).
262
2634.36 Sun Jan 13 10:53:56 CET 2008
264 - reset diehook when terminating from an async_pool as to not
265 trigger any __DIE__ handlers.
266
2674.35 Sun Jan 13 04:14:13 CET 2008
268 - "bt" debug command now displays any exceptions
269 from longmess and also skips the innermost
270 stackframes, giving more useufl output.
271 - allow backtraces in coroutines blocked in Coro::EV,
272 at a <1% speed hit.
273 - handle localising of $SIG{__WARN__} and __DIE__
274 properly (with a proper amount of dirty hacking).
275
2764.34 Sat Dec 22 17:49:53 CET 2007
277 - upgrade to EV version 2.0 API.
278
2794.33 Mon Dec 17 08:36:12 CET 2007
280 - make Coro::AIO etc. loadable in the absence of EV.
281
2824.32 Mon Dec 17 07:46:02 CET 2007
283 - majorly improved Coro::Handle's performance with Coro::EV.
284 - implemented the until now mythical Coro::BDB module.
285 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
286
2874.31 Wed Dec 5 12:32:39 CET 2007
288 - remove warn statement form Coro::Util.
289
2904.3 Tue Dec 4 20:33:14 CET 2007
291 - calls to the idle function could cause stack corruption
292 when the stack changed.
293 - do no longer rely on the presence of EV::DNS if EV is used
294 (because it is gone), but instead take avdantage of EV::ADNS
295 if available.
296 - add ($) prototypes to all functions in Coro::Storable.
297 - use a conventional (safer) idle callback in Coro::EV.
298 - do accept quickly in Coro::Debug to avoid endless loops.
299
3004.22 Fri Nov 30 16:04:04 CET 2007
301 - really use optimised versions for Event and EV in Coro::Util
302 and Coro::Handle.
303
3044.21 Sun Nov 25 10:48:59 CET 2007
305 - fix a spurious memory read.
306 - Coro::EV no longer keeps the eventloop "alive".
307
3084.2 Fri Nov 9 20:47:05 CET 2007
309 - enable/disable tracing from a new coroutine, not a pooled one.
310 - fix a memleak in Coro::Event.
311 - removed killall call from fork_eval.
312 - made sure store_fd is already loaded so that fork_eval
313 does not have to parse autoload in each subprocess.
314 - only use assembly method if -O switch is in $Config{optimize}.
315 - add (optional) Coro::EV module, so far the best event loop module
316 directly supported by Coro.
317 - if the event model is EV, use EV::DNS to resolve
318 stuff in Coro::Util.
319 - don't get confused by multiple event notifications in Coro::Handle.
320 - initial support for EV (libevent interface).
321 - require Event and EV using configure_requires, to force their existance.
322
3234.13 Wed Oct 24 07:26:45 CEST 2007
324 - add Coro::Storable::blocking_thaw.
325 - use a vastly more complicated technique to localise
326 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
327 - use a coroutine for the idle callback Coro::Event,
328 instead of running Event in the current coroutine context.
329 This also catches recursive invocations.
330 - actually report fork errors in gethostbyname and inet_aton.
331
3324.11 Thu Oct 11 02:40:24 CEST 2007
333 - port to threaded perls.
334
3354.1 Thu Oct 11 02:38:16 CEST 2007
336 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
337 be local to each coro (see Coro::State).
338 - incompatible change: for very deep reasons, cede and cede_notself
339 cannot return anything, so nothing will be returned.
340 - possibly bring back 5.10 compatibility (untested).
341 - work around stupid (and wrong) warning on 5.10 :(.
342 - overlay the saved state over the context stack. This saves
343 a few hundred bytes per coroutine on average and also
344 speeds up context switching a bit.
345 - further tune default stack sizes.
346 - (more) correctly calculate stack usage in coro_rss.
347 - Coro::Storable::blocking_* did not properly lock
348 resulting in races between coroutines.
349 - added Coro::Storable::guard.
350 - stopping to trace a coroutine could destroy the cctx of
351 an unrelated coroutine.
352 - explain the relationship between Perl and C coroutines in
353 more detail in Coro::State.
354 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
355 causing a fork per resolve. This also affected Coro::Socket.
356 - switch to a separate stack in $coro->call/eval to avoid
357 invalidating pointers.
358
3594.03 Sat Oct 6 21:24:00 CEST 2007
360 - added Coro::throw method.
361 - minor code cleanups.
362
3634.02 Sat Oct 6 02:36:47 CEST 2007
364 - fix a very minor per-coroutine memleak (a single codereference).
365 - fixed a bug where the currently in-use c context would be freed
366 prematurely (can happen only when programs change the stacksize
367 or use tracing).
368 - tracing can no longer keep a coro alive after it terminated.
369 - do static branch prediction in the common path for gcc. gives
370 about 2-5% speed improvement here.
371
3724.01 Fri Oct 5 22:10:49 CEST 2007
373 - instead of recreating *a* standard output handle we simply
374 use STDOUT, which is faster and hopefully more robust.
375
3764.0 Fri Oct 5 12:56:00 CEST 2007
377 - incompatibly changed Coro::Storable::freeze.
378 - major new feature: added Coro::Debug, for interactive coroutine
379 debugging, tracing and much more.
380 - major bug fix: unbelievable, but true: $_, $/ and many other
381 "saved" variables actually weren't being saved. This has been fixed,
382 of course, while increasing performance while losing all the save
383 flags.
384 - save flags are gone, and all the api functions dealing with them.
385 - added Coro::Semaphore::adjust.
386 - added Coro::Util::fork_eval.
387 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
388 - added Coro::killall.
389 - reduce initial stack sizes to allow for "micro-coroutines".
390 - better async_pool resource management, moved parts of async_pool
391 handling to XS (major speed improvement).
392 - actually croak before modifying important data structures.
393 - refuse to transfer while compiling.
394 - possibly support eval EXPR better now.
395 - enable assembly per default on linux+bsd x86+amd64.
396 - all internal members were renamed _something for easier subclassing.
397 - many minor tweaks.
398
3993.63 Wed May 16 14:10:06 CEST 2007
400 - implement handcoded assembly for x86/amd64 SVR ABI.
401
4023.62 Fri Apr 27 21:36:06 CEST 2007
403 - upgrade libcoro (which might set unwind info correctly).
404 - change default on linux to setjmp/longjmp.
405
4063.61 Thu Apr 19 12:36:18 CEST 2007
407 - Coro::Storable caused an endless loop when thawing invalid
408 pst's sometimes.
409 - use a Semaphore in Coro::Storable, as Storable doesn't
410 seem to be reentrant (although it is documented to
411 be threadsafe...).
412 - fix Coro::Signal to bring back the original unreliable
413 but stateful semantics.
414 - fixed a lot of typos in Coro.pm (patch submitted by David
415 Steinbrunner, which applied flawlessly).
416
4173.6 Sat Apr 14 17:13:31 CEST 2007
418 - added some bugfixes to get eg/myhttpd working again.
419 - added Coro::Storable for often-cede'ing freeze/thaw.
420 - try to do a clean exit when a coroutine calls exit
421 (EXPERIMENTAL).
422 - got rid of indirect call through _coro_init.
423 - updated the partly antique examples in eg/ to
424 work again and be a bit less magic, too.
425 - fixed Coro::Signal semantics to work as documented again.
426
4273.55 Sun Mar 25 01:20:47 CET 2007
428 - add SAVE_DEFFH to save the default filehandle and enable
429 it by default.
430 - finally move socket-operations from Coro::Socket to Coro::Handle
431 to be able to unblock foreign sockets.
432 - add Coro::State::save_also and guarded_save.
433 - add count accessor to Coro::Semaphore.
434 - add Coro::State::cctx_stacksize.
435 - just for the fun of it, do not rely on implicit context,
436 which can dramatically improve performance, but people
437 using windows-process-emulation perls do not care much about
438 performance.
439
4403.51 Sun Mar 4 14:18:04 CET 2007
441 - fixed a problem when you weakened references to Coro::State's
442 (patch by Yuval Kogman).
443
4443.501 Wed Feb 28 12:44:07 CET 2007
445 - rename some global symbols as macosx from hell redefines
446 them without asking.
447
4483.5 Tue Feb 13 20:22:53 CET 2007
449 - do AnyEvent model detection earlier, avoiding problems
450 caused by first using AnyEvent and later Coro::Event.
451 - implement and document Coro::Event event objects.
452 - fix a potential problem in Coro::Event causing crashes.
453 - initialise PL_comppad when creating a new coroutine,
454 avoids crashes on early coro destruction.
455
4563.41 Mon Jan 22 19:19:49 CET 2007
457 - readline on Coro::Handle did not support undefined $/,
458 nor did it deliver partial lines on EOF or error.
459 - implement malloc fallback for stack allocation because
460 stupid broken idiotic OSX has a stupid broken
461 idiotic fits-the-whole-os mmap "implementation" and
462 my dick feels longer if Coro is portable even to
463 obsolete platforms.
464
4653.4 Fri Jan 19 21:52:54 CET 2007
466 - remove t/09_timer.t, as it isn't really testing much
467 but was rather flaky in practise.
468 - async_pool coro would keep arguments and callback alive until
469 it was reused.
470 - cancellation of a coroutine could cause spurious idle calls
471 in cede_notself.
472
4733.3 Sat Jan 6 03:45:00 CET 2007
474 - implement $coro->on_destroy.
475 - Coro::Event blocking semantics have been changed,
476 documented and - hopefully - improved.
477 - fix nice adding, not subtracting, from priority.
478 - fix ->prio and api_is_ready (patch by Mark Hinds).
479 - fixed an assert ("... == prev__cctx->idle_te")
480 that could errronously trigger.
481 - fix various large and small memleaks.
482 - use a (hopefully) more stable cancel implementation
483 that immediately frees the coroutine data.
484 - cede/cede_notself return a status now.
485 - added Coro::guard function.
486 - added a global coroutine pool for jobs (on my machine,
487 I can create and execute 48k simple coros/s with async,
488 and 128k coros with async_pool).
489 - Coro::AIO now uses the coroutine priority as io priority.
490
4913.2 Fri Dec 22 05:07:09 CET 2006
492 - improve portability to slightly older perls.
493 - use cleaner coroutine destruction.
494 - simplify configuration for users.
495 - optionally (unrecommended) prefer perl functions over
496 their coro replacements.
4 497
53.11 Tue Dec 5 13:11:24 CET 2006 4983.11 Tue Dec 5 13:11:24 CET 2006
6 - fixed some bogus assert's, but as perl.h disables assert even 499 - fixed some bogus assert's, but as perl.h disables assert even
7 without NDEBUG (thank you very much), not too many people should 500 without NDEBUG (thank you very much), not too many people should
8 notice (that did include myself). Andreas König noticed, though :) 501 notice (that did include myself). Andreas König noticed, though :)

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