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Comparing Coro/Changes (file contents):
Revision 1.216 by root, Sun Mar 25 00:24:47 2007 UTC vs.
Revision 1.474 by root, Sat Dec 6 00:55:59 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: destroy gets only called on cancel: fix(?) 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
8new -> ready
9new -> canceled
10ready -> running
11ready -> canceled
12running -> ready
13running -> blocked
14running -> canceled
15blocked -> ready
16blocked -> canceled
17
18
195.12
20 - add default config for MirOS, which seems to be a bug-to-bug
21 compatible fork of openbsd ("world domination by releasing
22 openbsd cvs before the openbsd folks do it" or so :).
23 - free_padlist did destroy the names pad, not good, but didn't
24 seem to bother perl - this could fix issues such as eval ""
25 inside a function called form multiple coroutines.
26 - use a different method to detect destruction time.
27 - be more careful when freeing padlists just before global
28 destruction.
29 - fixed and expanded the call/cc example.
30 - renamed _terminate to _coro_run.
31 - new method Coro::Channel->shutdown.
32 - try pthreads on openbsd <4.4 (broken sigaltstack, will
33 pthreads fare better?).
34 - be less picky about destroying "a" running coroutine.
35
365.11 Tue Nov 25 21:49:05 CET 2008
37 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
38 working code with failed assertions, introducing more bugs than
39 it fixes, requiring elaborate workarounds :(
40
415.1 Mon Nov 24 08:54:59 CET 2008
42 - wrote a small introductory tutorial - Coro::Intro.
43 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
44 - Coro::Select did errornously dup the file descriptors
45 and didn't work with all AnyEvent backends.
46 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
47 LWP data transfers.
48 - disassociate c contexts from coro objects - this is agruably more
49 correct, but mostly allows sharing of cctxs between coro and state
50 objects, for added memory savings and speed increases.
51 - bumped $Coro::POOL_RSS up to 32kb by default.
52 - no longer set the optype to OP_CUSTOM, as B::* understandably
53 doesn't like this very much (and we *are* a type of entersub).
54 - implement state cloning, just to prove that call/cc can be done.
55 - automatically load Coro::AnyEvent in Coro::Handle.
56 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
57 do not have this method (and don't need it either).
58 - speed up generic anyevent methods in Coro::Handle by using rouse
59 callbacks.
60 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
61 others. It also makes the debugger happier, as you can trace
62 through the idle threads now.
63 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
64 - eg/event was pretty broken.
65 - better 5.8.6 compatibility.
66
675.0 Thu Nov 20 10:35:05 CET 2008
68 - NEW ARCHITECTURE: use the latest 4.x version if you experience
69 stability issues.
70 - bump API version to 7 - all dependents must be recompiled.
71 - removed timed_* functions - they were not being used anyways
72 and should be replaced by a more generic mechanism -
73 and were annoying to support anyways :)
74 - removed SemaphoreSet's waiter method - use sem method instead.
75 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
76 - async_pool did free a scalar value twice
77 ("Attempt to unreference...").
78 - fix a longstanding bug where calling terminate on a coro that
79 was waiting for a semaphore that was just becoming available
80 would cause a deadlock (semaphore would get into a state where
81 it was available but waiters were still blocked).
82 - calling throw on a coroutine that is waiting for a semaphore will
83 no longer make it acquire the semaphore (and thus leak a count).
84 - perl's process emulation is now not even theoretically supported
85 anymore.
86 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
87 conversion of callback-style to blocking-style.
88 - new methods $coro->schedule_to and ->cede_to, to specifically
89 schedule or cede to a specific coroutine.
90 - new function Coro::Semaphore::wait.
91 - use named constants in Coro::Channel (Richard Hundt).
92 - directly patch the entersub opcode calling SLF functions (cede,
93 transfer and so on). this does speed up context switching, but
94 more importanly, it frees us from the hardcoded behaviour of
95 entersub, so we might actually be able to return something from
96 those functions and atcually create new ones.
97 - take advantage of __builtin_frame_address on gcc.
98 - expose THX in coroapi (not sure whether this was a wise decision,
99 as "threaded" perls are running at half speed anyways).
100 - implement execute_slf (schedule-like-function) interface that makes
101 it possible to implement schedule-like-functions in XS.
102 - use new SLF interface to massively speed up Coro::EV by roughly a
103 factor of two.
104 - used new SLF interface to massively speed up Coro::Semaphore by a
105 factor of three.
106 - used new SLF interface to speed up Coro::AIO by roughly a factor of
107 four and reduce its memory usage considerably.
108 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
109 for a nice speedup and vastly more correct behaviour. Also implement
110 a new method "sem" to get at the underlying semaphore object.
111 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
112 (in comparison) 20-40% speedup.
113 - used new SLF interface to reimplement Coro::Signal gaining
114 some unknown (because I was too lazy), but certain, speedup, and also
115 making signals reliable for the first time.
116 - used new SLF interface and other optimisations to speed up async_pool
117 by a factor of two. It also doesn't rely on perl's exception mechanism
118 to exit anymore. The overhead for terminating an async_pool, coro over
119 a normal async is now very small.
120 - sped up coroutine creation/destruction by 40%.
121 - forgot to include Coro/libcoro/README in the dist for all these years.
122 - work around a freebsd pthreads bug (manual testcancel is required as
123 pthread_cond_wait isn't a cancellation point on freebsd).
124 - use new rouse functions to speed up and simplify Coro::BDB.
125 - make "prefer perl native functions" work with threaded perls.
126 - condense Coro::Debug ps output, hint at v and w flags.
127 - (libcoro) lots of minor cleanups and portability improvements.
128
1294.914 Wed Nov 19 12:54:18 CET 2008
130 - fix a disastrous bug in the readline optimisation
131 introduced in 4.801.
132
1334.913 Sat Nov 15 07:58:28 CET 2008
134 - async_pool did free a scalar value twice
135 ("Attempt to unreference...").
136
1374.912 Thu Nov 13 18:31:23 CET 2008
138 - minor cleanups.
139 - use much larger stacks on linux and perl < 5.8.8.
140 - Coro::Debug::new_unix_server did not unlink the socket
141 when destroyed.
142
1434.911 Tue Nov 11 04:26:17 CET 2008
144 - "port" to threaded perls.
145
1464.91 Mon Nov 10 05:36:38 CET 2008
147 - the ->throw exception object no longer leaks.
148 - creating a new cctx leaked a scopestack entry (memleak).
149 - new coroutines didn't get created with a zero flags field
150 (unknown impact).
151 - calling ->throw on a not-yet-started coroutine should now work
152 instead of being ignored.
153 - ->throw is now supported on Coro::State objects.
154 - clean up cctx creation code a bit.
155 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
156
1574.9 Sat Nov 8 17:45:27 CET 2008
158 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
159 - (libcoro) no longer leak threads in the experimental pthread backend,
160 also speed it up considerably.
161 - (libcoro) do not rely on makecontext passing void *'s unscathed.
162 - fix compiletime dependencies on libcoro in the Makefile.
163 - cctx_count wasn't always updated properly.
164 - Coro::State::cctx_stacksize wasn't applied correctly.
165 - new function Coro::State::cctx_max_idle.
166 - the default max number of idle C contexts is now 4.
167 - (libcoro) try harder to get _setjmp/_longjmp.
168 - (libcoro) cleanup and extend the libcoro API to officially
169 allow the creation of empty source contexts.
170 - very experimental workaround for the totally broken netbsd platform.
171 - tried to hack around openbsd bugs.
172
1734.804 Wed Nov 5 16:36:00 CET 2008
174 - Coro::Debug::new_unix_server would not create a non-blocking listening
175 socket, sometimes causing freezes.
176 - (libcoro) fix misaligned stack points for setjmp and assembly
177 methods, which can cause crashes on x86/x86_64 with a sufficiently
178 aggressive compiler.
179 - new function: Coro::Debug::new_tcp_server.
180 - move ->throw into the Coro class because it only works on coro objects.
181
1824.803 Mon Nov 3 17:16:12 CET 2008
183 - (libcoro) use a global asm statement to become independent of gcc
184 otpimisations for CORO_ASM (thanks to pippijn for the idea).
185 - try to workaround yet another broken bsd, this time dragonfly.
186
1874.802 Thu Oct 30 10:56:12 CET 2008
188 - support -fno-omit-frame-pointer on x86 with the assembly method.
189 - tune 01_unblock.t tests a bit.
190
1914.801 Wed Oct 22 18:33:37 CEST 2008
192 - improve readline speed for very long "lines".
193 - backport to 5.8.8.
194
1954.8 Thu Oct 2 13:34:40 CEST 2008
196 - new function Coro::AIO::aio_wait.
197 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
198 - greatly speed up and reduce memory usage of Coro::AIO requests.
199 - implement some other µ-optimisations.
200
2014.749 Mon Sep 29 14:40:12 CEST 2008
202 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
203
2044.748 Sat Sep 27 14:03:19 CEST 2008
205 - implement, but do not document, PerlIO::cede(granularity).
206 - Coro::Storable forgot to wrap Storable::pstore.
207 - work around the multitude of leaks and memory corruption
208 bugs in PerlIO::via by using our own C-level perliol. As a side
209 effect, Coro::Storable is now much, much, much faster.
210
2114.747 Tue Sep 23 01:59:41 CEST 2008
212 - fix a per-cv memleak (one empty array was leaked per
213 code reference).
214 - avoid a crash in coro->call|rss when the coroutine was already
215 destroyed (most noticably when using Coro::Debug::ps :)
216 - also protect *Storable::FILE.
217 - push up default storable granularity to 20ms.
218
2194.746 Sun Sep 21 03:22:20 CEST 2008
220 - be more insistent on locking Storable against reentrancy
221 in Coro::Storable.
222 - move swap_def?v and throw to Coro::State, as documented.
223
2244.745 Thu Jul 24 00:14:38 CEST 2008
225 - remove debugging code related to MgPV_nolen_const, also try to
226 make it compile with perl 5.8.6 (yes, apple apparently loves
227 outdated software). Reported by John S.
228
2294.744 Tue Jul 8 22:06:35 CEST 2008
230 - correctly provide default DIE/WARN handlers as documented.
231 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
232 implementations inside perl work fine for us.
233
2344.743 Mon Jun 16 00:21:57 CEST 2008
235 - when using Coro::EV without running EV::loop it could
236 result in busy-waiting for events, this has been fixed.
237 - reduce codesize and improve performance by using EV_DEFAULT_UC.
238
2394.742 Sat May 31 14:10:21 CEST 2008
240 - implement a workaround for (some) perl <5.8.8 versions.
241 - require EV 3.3+.
242
2434.741 Fri May 30 23:33:09 CEST 2008
244 - tell netbsd how utterly broken their imitation of an OS is
245 and refuse to build by default if pthreads are in use.
246 - switch to "s" method on all bsd's by default, as their ucontext
247 stuff seems just too broken.
248 - fix a bug in Coro::Select.
249
2504.74 Thu May 29 20:05:31 CEST 2008
251 - do not test Coro::LWP for lack of dependencies.
252 - do not test Coro::Select for lack of working perls.
253
2544.73 Thu May 29 2008
255 - fix a bug in Coro::EV which would cause it to block despite
256 there being runnable coroutines.
257 - sprinkle "no warnings" freely over everything, also suppress
258 warnings for some other modules.
259 - fix typo in WSAEWOULDBLOCK.
260
2614.72 Sun May 25 05:14:36 CEST 2008
262 - tweak META.yaml a bit, unfortunately, there is no documented way
263 to have optional dependencies with CPAN. doh :(
264 - avoid running some tests on windows because they would fail due to
265 perl bug (broken fork, broken pipes...).
266 - work around perl on windows bugs where perl returns undocumented
267 error codes for sysread, syswrite etc. by taking advantage
268 of AnyEvent's workaround for that problem.
269 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
270 a common perl implementation bug on windows.
271 - use unix domain sockets in testsuite to work around
272 common perl implementation bugs on widows (they are emulated by
273 tcp sockets on windows. ugh.)
274
2754.71 Sat May 24 20:01:27 CEST 2008
276 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
277 - take advantage of async name resolution of AnyEvent::Util.
278 - work around brutal inet_aton override in Coro::LWP.
279 - take advantage of the readyhook in Coro::EV, for smoother
280 scheduling.
281
2824.7 Sun May 11 00:32:19 CEST 2008
283 - completely reworked the Coro manpage.
284 - added Coro::AnyEvent, generic event loop integration.
285 - implement cancel, ready and kill commands in Coro::Debug.
286 - document find_coro in Coro::Debug.
287 - incompatible change: rename has_stack to has_cctx.
288 - Coro::AIO and Coro::BDB no longer force event model detection,
289 use AnyEvent::AIO and AnyEvent::BDB.
290
2914.6 Sat Apr 26 10:05:14 CEST 2008
292 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
293 by the Coro module. It was a mistake to have it in the first place.
294 - (experimental) support for activestate perl 5.10 (method "w").
295 - (experimental) support for strawberry perl (method "a").
296 - coro_sigelem_set did not return a value although it had to,
297 actual impact unknown.
298
2994.51 Mon Apr 14 13:28:27 CEST 2008
300 - make it compile again on 5.8.
301
3024.50 Thu Apr 10 09:43:17 CEST 2008
303 - I did it twice! (see 4.49).
304
3054.49 Sun Apr 6 21:23:31 CEST 2008
306 - grr, instead of compiling the recent changes on 5.10 only they
307 were compiled on 5.8 only.
308
3094.48 Sun Apr 6 20:36:46 CEST 2008
310 - allow coroutine switches during eval's under 5.10.x, as it seems
311 the parser is a per-interpreter option now, so this is safe
312 (this might fix the odd crashing bug).
313 - drop support for 5.9.x versions: they are dead, jim.
314
3154.47 Sun Apr 6 00:37:52 CEST 2008
316 - force cctx allocation on API calls: we know we need to force one
317 and gcc actually manages to confuse our heuristic nowadays,
318 leading to crashes and worse.
319 - document force_cctx.
320
3214.46 Fri Apr 4 22:05:43 CEST 2008
322 - upgrade libcoro, resulting in pthread-backend (which was only created
323 to fulfill the rules of the programming languages shootout).
324
3254.45 Thu Mar 13 11:55:36 CET 2008
326 - fix a file leaking bug in eg/mhyttpd that would allow
327 downloading of any file (reported by oesi).
328 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
329 (also add testcase).
330 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
331 apparently having loads of fun with that).
332 - implement $state->swap_defsv, ->swap_defav and document ->throw.
333
3344.4 Wed Feb 13 16:44:29 CET 2008
335 - only assume .cfi pseudo isns exist on GNU/Linux.
336 - add get_timed method to Coro::Channels.
337 - fixed Coro::Debug manpage.
338 - perl 5.11 compatbility improvement based on patch by
339 Andreas König.
340
3414.37 Sun Jan 20 11:25:23 CET 2008
342 - soften the check for an active parser for perl 5.10 (avoiding
343 "Coro::State::transfer called while parsing" in many cases).
344
3454.36 Sun Jan 13 10:53:56 CET 2008
346 - reset diehook when terminating from an async_pool as to not
347 trigger any __DIE__ handlers.
348
3494.35 Sun Jan 13 04:14:13 CET 2008
350 - "bt" debug command now displays any exceptions
351 from longmess and also skips the innermost
352 stackframes, giving more useufl output.
353 - allow backtraces in coroutines blocked in Coro::EV,
354 at a <1% speed hit.
355 - handle localising of $SIG{__WARN__} and __DIE__
356 properly (with a proper amount of dirty hacking).
357
3584.34 Sat Dec 22 17:49:53 CET 2007
359 - upgrade to EV version 2.0 API.
360
3614.33 Mon Dec 17 08:36:12 CET 2007
362 - make Coro::AIO etc. loadable in the absence of EV.
363
3644.32 Mon Dec 17 07:46:02 CET 2007
365 - majorly improved Coro::Handle's performance with Coro::EV.
366 - implemented the until now mythical Coro::BDB module.
367 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
368
3694.31 Wed Dec 5 12:32:39 CET 2007
370 - remove warn statement form Coro::Util.
371
3724.3 Tue Dec 4 20:33:14 CET 2007
373 - calls to the idle function could cause stack corruption
374 when the stack changed.
375 - do no longer rely on the presence of EV::DNS if EV is used
376 (because it is gone), but instead take avdantage of EV::ADNS
377 if available.
378 - add ($) prototypes to all functions in Coro::Storable.
379 - use a conventional (safer) idle callback in Coro::EV.
380 - do accept quickly in Coro::Debug to avoid endless loops.
381
3824.22 Fri Nov 30 16:04:04 CET 2007
383 - really use optimised versions for Event and EV in Coro::Util
384 and Coro::Handle.
385
3864.21 Sun Nov 25 10:48:59 CET 2007
387 - fix a spurious memory read.
388 - Coro::EV no longer keeps the eventloop "alive".
389
3904.2 Fri Nov 9 20:47:05 CET 2007
391 - enable/disable tracing from a new coroutine, not a pooled one.
392 - fix a memleak in Coro::Event.
393 - removed killall call from fork_eval.
394 - made sure store_fd is already loaded so that fork_eval
395 does not have to parse autoload in each subprocess.
396 - only use assembly method if -O switch is in $Config{optimize}.
397 - add (optional) Coro::EV module, so far the best event loop module
398 directly supported by Coro.
399 - if the event model is EV, use EV::DNS to resolve
400 stuff in Coro::Util.
401 - don't get confused by multiple event notifications in Coro::Handle.
402 - initial support for EV (libevent interface).
403 - require Event and EV using configure_requires, to force their existance.
404
4054.13 Wed Oct 24 07:26:45 CEST 2007
406 - add Coro::Storable::blocking_thaw.
407 - use a vastly more complicated technique to localise
408 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
409 - use a coroutine for the idle callback Coro::Event,
410 instead of running Event in the current coroutine context.
411 This also catches recursive invocations.
412 - actually report fork errors in gethostbyname and inet_aton.
413
4144.11 Thu Oct 11 02:40:24 CEST 2007
415 - port to threaded perls.
416
4174.1 Thu Oct 11 02:38:16 CEST 2007
418 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
419 be local to each coro (see Coro::State).
420 - incompatible change: for very deep reasons, cede and cede_notself
421 cannot return anything, so nothing will be returned.
422 - possibly bring back 5.10 compatibility (untested).
423 - work around stupid (and wrong) warning on 5.10 :(.
424 - overlay the saved state over the context stack. This saves
425 a few hundred bytes per coroutine on average and also
426 speeds up context switching a bit.
427 - further tune default stack sizes.
428 - (more) correctly calculate stack usage in coro_rss.
429 - Coro::Storable::blocking_* did not properly lock
430 resulting in races between coroutines.
431 - added Coro::Storable::guard.
432 - stopping to trace a coroutine could destroy the cctx of
433 an unrelated coroutine.
434 - explain the relationship between Perl and C coroutines in
435 more detail in Coro::State.
436 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
437 causing a fork per resolve. This also affected Coro::Socket.
438 - switch to a separate stack in $coro->call/eval to avoid
439 invalidating pointers.
440
4414.03 Sat Oct 6 21:24:00 CEST 2007
442 - added Coro::throw method.
443 - minor code cleanups.
444
4454.02 Sat Oct 6 02:36:47 CEST 2007
446 - fix a very minor per-coroutine memleak (a single codereference).
447 - fixed a bug where the currently in-use c context would be freed
448 prematurely (can happen only when programs change the stacksize
449 or use tracing).
450 - tracing can no longer keep a coro alive after it terminated.
451 - do static branch prediction in the common path for gcc. gives
452 about 2-5% speed improvement here.
453
4544.01 Fri Oct 5 22:10:49 CEST 2007
455 - instead of recreating *a* standard output handle we simply
456 use STDOUT, which is faster and hopefully more robust.
457
4584.0 Fri Oct 5 12:56:00 CEST 2007
459 - incompatibly changed Coro::Storable::freeze.
460 - major new feature: added Coro::Debug, for interactive coroutine
461 debugging, tracing and much more.
462 - major bug fix: unbelievable, but true: $_, $/ and many other
463 "saved" variables actually weren't being saved. This has been fixed,
464 of course, while increasing performance while losing all the save
465 flags.
466 - save flags are gone, and all the api functions dealing with them.
467 - added Coro::Semaphore::adjust.
468 - added Coro::Util::fork_eval.
469 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
470 - added Coro::killall.
471 - reduce initial stack sizes to allow for "micro-coroutines".
472 - better async_pool resource management, moved parts of async_pool
473 handling to XS (major speed improvement).
474 - actually croak before modifying important data structures.
475 - refuse to transfer while compiling.
476 - possibly support eval EXPR better now.
477 - enable assembly per default on linux+bsd x86+amd64.
478 - all internal members were renamed _something for easier subclassing.
479 - many minor tweaks.
480
4813.63 Wed May 16 14:10:06 CEST 2007
482 - implement handcoded assembly for x86/amd64 SVR ABI.
483
4843.62 Fri Apr 27 21:36:06 CEST 2007
485 - upgrade libcoro (which might set unwind info correctly).
486 - change default on linux to setjmp/longjmp.
487
4883.61 Thu Apr 19 12:36:18 CEST 2007
489 - Coro::Storable caused an endless loop when thawing invalid
490 pst's sometimes.
491 - use a Semaphore in Coro::Storable, as Storable doesn't
492 seem to be reentrant (although it is documented to
493 be threadsafe...).
494 - fix Coro::Signal to bring back the original unreliable
495 but stateful semantics.
496 - fixed a lot of typos in Coro.pm (patch submitted by David
497 Steinbrunner, which applied flawlessly).
498
4993.6 Sat Apr 14 17:13:31 CEST 2007
500 - added some bugfixes to get eg/myhttpd working again.
501 - added Coro::Storable for often-cede'ing freeze/thaw.
502 - try to do a clean exit when a coroutine calls exit
503 (EXPERIMENTAL).
504 - got rid of indirect call through _coro_init.
505 - updated the partly antique examples in eg/ to
506 work again and be a bit less magic, too.
507 - fixed Coro::Signal semantics to work as documented again.
5 508
63.55 Sun Mar 25 01:20:47 CET 2007 5093.55 Sun Mar 25 01:20:47 CET 2007
7 - add SAVE_DEFFH to save the default filehandle and enable 510 - add SAVE_DEFFH to save the default filehandle and enable
8 it by default. 511 it by default.
9 - finally move socket-operations from Coro::Socket to Coro::Handle 512 - finally move socket-operations from Coro::Socket to Coro::Handle

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