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Comparing Coro/Changes (file contents):
Revision 1.238 by root, Fri Sep 21 02:26:43 2007 UTC vs.
Revision 1.471 by root, Thu Dec 4 04:31:41 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(?)
5TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO.
6TODO: maybe implement a default message channel, very much like Erlang 4TODO: maybe implement a default message channel, very much like Erlang's
7 (which is cool in a lot of important aspects (failures!), 5 actor model (which is cool in a lot of important aspects (failures!),
8 but very lacking in others). 6 but very lacking in others (higher level ipc)).
9 7
103.7 8TODO: CF_RUNNING makes sense only for Coros, not States
9 - add default config for MirOS, which seems to be a bug-to-bug
10 compatible fork of openbsd ("world domination by releasing
11 openbsd cvs before the openbsd folks do it" or so :).
12 - free_padlist did destroy the names pad, not good, but didn't
13 seem to bother perl - this could fix issues such as eval ""
14 inside a function called form multiple coroutines.
15 - use a different method to detect destruction time.
16 - be more careful when freeing padlists just before global
17 destruction.
18 - fixed and expanded the call/cc example.
19 - renamed _terminate to _coro_run.
20
215.11 Tue Nov 25 21:49:05 CET 2008
22 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
23 working code with failed assertions, introducing more bugs than
24 it fixes, requiring elaborate workarounds :(
25
265.1 Mon Nov 24 08:54:59 CET 2008
27 - wrote a small introductory tutorial - Coro::Intro.
28 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
29 - Coro::Select did errornously dup the file descriptors
30 and didn't work with all AnyEvent backends.
31 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
32 LWP data transfers.
33 - disassociate c contexts from coro objects - this is agruably more
34 correct, but mostly allows sharing of cctxs between coro and state
35 objects, for added memory savings and speed increases.
36 - bumped $Coro::POOL_RSS up to 32kb by default.
37 - no longer set the optype to OP_CUSTOM, as B::* understandably
38 doesn't like this very much (and we *are* a type of entersub).
39 - implement state cloning, just to prove that call/cc can be done.
40 - automatically load Coro::AnyEvent in Coro::Handle.
41 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
42 do not have this method (and don't need it either).
43 - speed up generic anyevent methods in Coro::Handle by using rouse
44 callbacks.
45 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
46 others. It also makes the debugger happier, as you can trace
47 through the idle threads now.
48 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
49 - eg/event was pretty broken.
50 - better 5.8.6 compatibility.
51
525.0 Thu Nov 20 10:35:05 CET 2008
53 - NEW ARCHITECTURE: use the latest 4.x version if you experience
54 stability issues.
55 - bump API version to 7 - all dependents must be recompiled.
56 - removed timed_* functions - they were not being used anyways
57 and should be replaced by a more generic mechanism -
58 and were annoying to support anyways :)
59 - removed SemaphoreSet's waiter method - use sem method instead.
60 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
61 - async_pool did free a scalar value twice
62 ("Attempt to unreference...").
63 - fix a longstanding bug where calling terminate on a coro that
64 was waiting for a semaphore that was just becoming available
65 would cause a deadlock (semaphore would get into a state where
66 it was available but waiters were still blocked).
67 - calling throw on a coroutine that is waiting for a semaphore will
68 no longer make it acquire the semaphore (and thus leak a count).
69 - perl's process emulation is now not even theoretically supported
70 anymore.
71 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
72 conversion of callback-style to blocking-style.
73 - new methods $coro->schedule_to and ->cede_to, to specifically
74 schedule or cede to a specific coroutine.
75 - new function Coro::Semaphore::wait.
76 - use named constants in Coro::Channel (Richard Hundt).
77 - directly patch the entersub opcode calling SLF functions (cede,
78 transfer and so on). this does speed up context switching, but
79 more importanly, it frees us from the hardcoded behaviour of
80 entersub, so we might actually be able to return something from
81 those functions and atcually create new ones.
82 - take advantage of __builtin_frame_address on gcc.
83 - expose THX in coroapi (not sure whether this was a wise decision,
84 as "threaded" perls are running at half speed anyways).
85 - implement execute_slf (schedule-like-function) interface that makes
86 it possible to implement schedule-like-functions in XS.
87 - use new SLF interface to massively speed up Coro::EV by roughly a
88 factor of two.
89 - used new SLF interface to massively speed up Coro::Semaphore by a
90 factor of three.
91 - used new SLF interface to speed up Coro::AIO by roughly a factor of
92 four and reduce its memory usage considerably.
93 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
94 for a nice speedup and vastly more correct behaviour. Also implement
95 a new method "sem" to get at the underlying semaphore object.
96 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
97 (in comparison) 20-40% speedup.
98 - used new SLF interface to reimplement Coro::Signal gaining
99 some unknown (because I was too lazy), but certain, speedup, and also
100 making signals reliable for the first time.
101 - used new SLF interface and other optimisations to speed up async_pool
102 by a factor of two. It also doesn't rely on perl's exception mechanism
103 to exit anymore. The overhead for terminating an async_pool, coro over
104 a normal async is now very small.
105 - sped up coroutine creation/destruction by 40%.
106 - forgot to include Coro/libcoro/README in the dist for all these years.
107 - work around a freebsd pthreads bug (manual testcancel is required as
108 pthread_cond_wait isn't a cancellation point on freebsd).
109 - use new rouse functions to speed up and simplify Coro::BDB.
110 - make "prefer perl native functions" work with threaded perls.
111 - condense Coro::Debug ps output, hint at v and w flags.
112 - (libcoro) lots of minor cleanups and portability improvements.
113
1144.914 Wed Nov 19 12:54:18 CET 2008
115 - fix a disastrous bug in the readline optimisation
116 introduced in 4.801.
117
1184.913 Sat Nov 15 07:58:28 CET 2008
119 - async_pool did free a scalar value twice
120 ("Attempt to unreference...").
121
1224.912 Thu Nov 13 18:31:23 CET 2008
123 - minor cleanups.
124 - use much larger stacks on linux and perl < 5.8.8.
125 - Coro::Debug::new_unix_server did not unlink the socket
126 when destroyed.
127
1284.911 Tue Nov 11 04:26:17 CET 2008
129 - "port" to threaded perls.
130
1314.91 Mon Nov 10 05:36:38 CET 2008
132 - the ->throw exception object no longer leaks.
133 - creating a new cctx leaked a scopestack entry (memleak).
134 - new coroutines didn't get created with a zero flags field
135 (unknown impact).
136 - calling ->throw on a not-yet-started coroutine should now work
137 instead of being ignored.
138 - ->throw is now supported on Coro::State objects.
139 - clean up cctx creation code a bit.
140 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
141
1424.9 Sat Nov 8 17:45:27 CET 2008
143 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
144 - (libcoro) no longer leak threads in the experimental pthread backend,
145 also speed it up considerably.
146 - (libcoro) do not rely on makecontext passing void *'s unscathed.
147 - fix compiletime dependencies on libcoro in the Makefile.
148 - cctx_count wasn't always updated properly.
149 - Coro::State::cctx_stacksize wasn't applied correctly.
150 - new function Coro::State::cctx_max_idle.
151 - the default max number of idle C contexts is now 4.
152 - (libcoro) try harder to get _setjmp/_longjmp.
153 - (libcoro) cleanup and extend the libcoro API to officially
154 allow the creation of empty source contexts.
155 - very experimental workaround for the totally broken netbsd platform.
156 - tried to hack around openbsd bugs.
157
1584.804 Wed Nov 5 16:36:00 CET 2008
159 - Coro::Debug::new_unix_server would not create a non-blocking listening
160 socket, sometimes causing freezes.
161 - (libcoro) fix misaligned stack points for setjmp and assembly
162 methods, which can cause crashes on x86/x86_64 with a sufficiently
163 aggressive compiler.
164 - new function: Coro::Debug::new_tcp_server.
165 - move ->throw into the Coro class because it only works on coro objects.
166
1674.803 Mon Nov 3 17:16:12 CET 2008
168 - (libcoro) use a global asm statement to become independent of gcc
169 otpimisations for CORO_ASM (thanks to pippijn for the idea).
170 - try to workaround yet another broken bsd, this time dragonfly.
171
1724.802 Thu Oct 30 10:56:12 CET 2008
173 - support -fno-omit-frame-pointer on x86 with the assembly method.
174 - tune 01_unblock.t tests a bit.
175
1764.801 Wed Oct 22 18:33:37 CEST 2008
177 - improve readline speed for very long "lines".
178 - backport to 5.8.8.
179
1804.8 Thu Oct 2 13:34:40 CEST 2008
181 - new function Coro::AIO::aio_wait.
182 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
183 - greatly speed up and reduce memory usage of Coro::AIO requests.
184 - implement some other µ-optimisations.
185
1864.749 Mon Sep 29 14:40:12 CEST 2008
187 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
188
1894.748 Sat Sep 27 14:03:19 CEST 2008
190 - implement, but do not document, PerlIO::cede(granularity).
191 - Coro::Storable forgot to wrap Storable::pstore.
192 - work around the multitude of leaks and memory corruption
193 bugs in PerlIO::via by using our own C-level perliol. As a side
194 effect, Coro::Storable is now much, much, much faster.
195
1964.747 Tue Sep 23 01:59:41 CEST 2008
197 - fix a per-cv memleak (one empty array was leaked per
198 code reference).
199 - avoid a crash in coro->call|rss when the coroutine was already
200 destroyed (most noticably when using Coro::Debug::ps :)
201 - also protect *Storable::FILE.
202 - push up default storable granularity to 20ms.
203
2044.746 Sun Sep 21 03:22:20 CEST 2008
205 - be more insistent on locking Storable against reentrancy
206 in Coro::Storable.
207 - move swap_def?v and throw to Coro::State, as documented.
208
2094.745 Thu Jul 24 00:14:38 CEST 2008
210 - remove debugging code related to MgPV_nolen_const, also try to
211 make it compile with perl 5.8.6 (yes, apple apparently loves
212 outdated software). Reported by John S.
213
2144.744 Tue Jul 8 22:06:35 CEST 2008
215 - correctly provide default DIE/WARN handlers as documented.
216 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
217 implementations inside perl work fine for us.
218
2194.743 Mon Jun 16 00:21:57 CEST 2008
220 - when using Coro::EV without running EV::loop it could
221 result in busy-waiting for events, this has been fixed.
222 - reduce codesize and improve performance by using EV_DEFAULT_UC.
223
2244.742 Sat May 31 14:10:21 CEST 2008
225 - implement a workaround for (some) perl <5.8.8 versions.
226 - require EV 3.3+.
227
2284.741 Fri May 30 23:33:09 CEST 2008
229 - tell netbsd how utterly broken their imitation of an OS is
230 and refuse to build by default if pthreads are in use.
231 - switch to "s" method on all bsd's by default, as their ucontext
232 stuff seems just too broken.
233 - fix a bug in Coro::Select.
234
2354.74 Thu May 29 20:05:31 CEST 2008
236 - do not test Coro::LWP for lack of dependencies.
237 - do not test Coro::Select for lack of working perls.
238
2394.73 Thu May 29 2008
240 - fix a bug in Coro::EV which would cause it to block despite
241 there being runnable coroutines.
242 - sprinkle "no warnings" freely over everything, also suppress
243 warnings for some other modules.
244 - fix typo in WSAEWOULDBLOCK.
245
2464.72 Sun May 25 05:14:36 CEST 2008
247 - tweak META.yaml a bit, unfortunately, there is no documented way
248 to have optional dependencies with CPAN. doh :(
249 - avoid running some tests on windows because they would fail due to
250 perl bug (broken fork, broken pipes...).
251 - work around perl on windows bugs where perl returns undocumented
252 error codes for sysread, syswrite etc. by taking advantage
253 of AnyEvent's workaround for that problem.
254 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
255 a common perl implementation bug on windows.
256 - use unix domain sockets in testsuite to work around
257 common perl implementation bugs on widows (they are emulated by
258 tcp sockets on windows. ugh.)
259
2604.71 Sat May 24 20:01:27 CEST 2008
261 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
262 - take advantage of async name resolution of AnyEvent::Util.
263 - work around brutal inet_aton override in Coro::LWP.
264 - take advantage of the readyhook in Coro::EV, for smoother
265 scheduling.
266
2674.7 Sun May 11 00:32:19 CEST 2008
268 - completely reworked the Coro manpage.
269 - added Coro::AnyEvent, generic event loop integration.
270 - implement cancel, ready and kill commands in Coro::Debug.
271 - document find_coro in Coro::Debug.
272 - incompatible change: rename has_stack to has_cctx.
273 - Coro::AIO and Coro::BDB no longer force event model detection,
274 use AnyEvent::AIO and AnyEvent::BDB.
275
2764.6 Sat Apr 26 10:05:14 CEST 2008
277 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
278 by the Coro module. It was a mistake to have it in the first place.
279 - (experimental) support for activestate perl 5.10 (method "w").
280 - (experimental) support for strawberry perl (method "a").
281 - coro_sigelem_set did not return a value although it had to,
282 actual impact unknown.
283
2844.51 Mon Apr 14 13:28:27 CEST 2008
285 - make it compile again on 5.8.
286
2874.50 Thu Apr 10 09:43:17 CEST 2008
288 - I did it twice! (see 4.49).
289
2904.49 Sun Apr 6 21:23:31 CEST 2008
291 - grr, instead of compiling the recent changes on 5.10 only they
292 were compiled on 5.8 only.
293
2944.48 Sun Apr 6 20:36:46 CEST 2008
295 - allow coroutine switches during eval's under 5.10.x, as it seems
296 the parser is a per-interpreter option now, so this is safe
297 (this might fix the odd crashing bug).
298 - drop support for 5.9.x versions: they are dead, jim.
299
3004.47 Sun Apr 6 00:37:52 CEST 2008
301 - force cctx allocation on API calls: we know we need to force one
302 and gcc actually manages to confuse our heuristic nowadays,
303 leading to crashes and worse.
304 - document force_cctx.
305
3064.46 Fri Apr 4 22:05:43 CEST 2008
307 - upgrade libcoro, resulting in pthread-backend (which was only created
308 to fulfill the rules of the programming languages shootout).
309
3104.45 Thu Mar 13 11:55:36 CET 2008
311 - fix a file leaking bug in eg/mhyttpd that would allow
312 downloading of any file (reported by oesi).
313 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
314 (also add testcase).
315 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
316 apparently having loads of fun with that).
317 - implement $state->swap_defsv, ->swap_defav and document ->throw.
318
3194.4 Wed Feb 13 16:44:29 CET 2008
320 - only assume .cfi pseudo isns exist on GNU/Linux.
321 - add get_timed method to Coro::Channels.
322 - fixed Coro::Debug manpage.
323 - perl 5.11 compatbility improvement based on patch by
324 Andreas König.
325
3264.37 Sun Jan 20 11:25:23 CET 2008
327 - soften the check for an active parser for perl 5.10 (avoiding
328 "Coro::State::transfer called while parsing" in many cases).
329
3304.36 Sun Jan 13 10:53:56 CET 2008
331 - reset diehook when terminating from an async_pool as to not
332 trigger any __DIE__ handlers.
333
3344.35 Sun Jan 13 04:14:13 CET 2008
335 - "bt" debug command now displays any exceptions
336 from longmess and also skips the innermost
337 stackframes, giving more useufl output.
338 - allow backtraces in coroutines blocked in Coro::EV,
339 at a <1% speed hit.
340 - handle localising of $SIG{__WARN__} and __DIE__
341 properly (with a proper amount of dirty hacking).
342
3434.34 Sat Dec 22 17:49:53 CET 2007
344 - upgrade to EV version 2.0 API.
345
3464.33 Mon Dec 17 08:36:12 CET 2007
347 - make Coro::AIO etc. loadable in the absence of EV.
348
3494.32 Mon Dec 17 07:46:02 CET 2007
350 - majorly improved Coro::Handle's performance with Coro::EV.
351 - implemented the until now mythical Coro::BDB module.
352 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
353
3544.31 Wed Dec 5 12:32:39 CET 2007
355 - remove warn statement form Coro::Util.
356
3574.3 Tue Dec 4 20:33:14 CET 2007
358 - calls to the idle function could cause stack corruption
359 when the stack changed.
360 - do no longer rely on the presence of EV::DNS if EV is used
361 (because it is gone), but instead take avdantage of EV::ADNS
362 if available.
363 - add ($) prototypes to all functions in Coro::Storable.
364 - use a conventional (safer) idle callback in Coro::EV.
365 - do accept quickly in Coro::Debug to avoid endless loops.
366
3674.22 Fri Nov 30 16:04:04 CET 2007
368 - really use optimised versions for Event and EV in Coro::Util
369 and Coro::Handle.
370
3714.21 Sun Nov 25 10:48:59 CET 2007
372 - fix a spurious memory read.
373 - Coro::EV no longer keeps the eventloop "alive".
374
3754.2 Fri Nov 9 20:47:05 CET 2007
376 - enable/disable tracing from a new coroutine, not a pooled one.
377 - fix a memleak in Coro::Event.
378 - removed killall call from fork_eval.
379 - made sure store_fd is already loaded so that fork_eval
380 does not have to parse autoload in each subprocess.
381 - only use assembly method if -O switch is in $Config{optimize}.
382 - add (optional) Coro::EV module, so far the best event loop module
383 directly supported by Coro.
384 - if the event model is EV, use EV::DNS to resolve
385 stuff in Coro::Util.
386 - don't get confused by multiple event notifications in Coro::Handle.
387 - initial support for EV (libevent interface).
388 - require Event and EV using configure_requires, to force their existance.
389
3904.13 Wed Oct 24 07:26:45 CEST 2007
391 - add Coro::Storable::blocking_thaw.
392 - use a vastly more complicated technique to localise
393 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
394 - use a coroutine for the idle callback Coro::Event,
395 instead of running Event in the current coroutine context.
396 This also catches recursive invocations.
397 - actually report fork errors in gethostbyname and inet_aton.
398
3994.11 Thu Oct 11 02:40:24 CEST 2007
400 - port to threaded perls.
401
4024.1 Thu Oct 11 02:38:16 CEST 2007
403 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
404 be local to each coro (see Coro::State).
405 - incompatible change: for very deep reasons, cede and cede_notself
406 cannot return anything, so nothing will be returned.
407 - possibly bring back 5.10 compatibility (untested).
408 - work around stupid (and wrong) warning on 5.10 :(.
409 - overlay the saved state over the context stack. This saves
410 a few hundred bytes per coroutine on average and also
411 speeds up context switching a bit.
412 - further tune default stack sizes.
413 - (more) correctly calculate stack usage in coro_rss.
414 - Coro::Storable::blocking_* did not properly lock
415 resulting in races between coroutines.
416 - added Coro::Storable::guard.
417 - stopping to trace a coroutine could destroy the cctx of
418 an unrelated coroutine.
419 - explain the relationship between Perl and C coroutines in
420 more detail in Coro::State.
421 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
422 causing a fork per resolve. This also affected Coro::Socket.
423 - switch to a separate stack in $coro->call/eval to avoid
424 invalidating pointers.
425
4264.03 Sat Oct 6 21:24:00 CEST 2007
427 - added Coro::throw method.
428 - minor code cleanups.
429
4304.02 Sat Oct 6 02:36:47 CEST 2007
431 - fix a very minor per-coroutine memleak (a single codereference).
432 - fixed a bug where the currently in-use c context would be freed
433 prematurely (can happen only when programs change the stacksize
434 or use tracing).
435 - tracing can no longer keep a coro alive after it terminated.
436 - do static branch prediction in the common path for gcc. gives
437 about 2-5% speed improvement here.
438
4394.01 Fri Oct 5 22:10:49 CEST 2007
440 - instead of recreating *a* standard output handle we simply
441 use STDOUT, which is faster and hopefully more robust.
442
4434.0 Fri Oct 5 12:56:00 CEST 2007
11 - incompatibly changed Coro::Storable::freeze. 444 - incompatibly changed Coro::Storable::freeze.
12 - added Coro::Debug, interactive coroutine debugging. 445 - major new feature: added Coro::Debug, for interactive coroutine
446 debugging, tracing and much more.
447 - major bug fix: unbelievable, but true: $_, $/ and many other
448 "saved" variables actually weren't being saved. This has been fixed,
449 of course, while increasing performance while losing all the save
450 flags.
451 - save flags are gone, and all the api functions dealing with them.
13 - added Coro::Semaphore::adjust. 452 - added Coro::Semaphore::adjust.
14 - added Coro::Util::fork_eval. 453 - added Coro::Util::fork_eval.
15 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}. 454 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
455 - added Coro::killall.
16 - reduce initial stack sizes to allow for "micro-coroutines". 456 - reduce initial stack sizes to allow for "micro-coroutines".
457 - better async_pool resource management, moved parts of async_pool
458 handling to XS (major speed improvement).
459 - actually croak before modifying important data structures.
460 - refuse to transfer while compiling.
461 - possibly support eval EXPR better now.
462 - enable assembly per default on linux+bsd x86+amd64.
463 - all internal members were renamed _something for easier subclassing.
17 - many minor tweaks. 464 - many minor tweaks.
18 465
193.63 Wed May 16 14:10:06 CEST 2007 4663.63 Wed May 16 14:10:06 CEST 2007
20 - implement handcoded assembly for x86/amd64 SVR ABI. 467 - implement handcoded assembly for x86/amd64 SVR ABI.
21 468

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