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Comparing Coro/Changes (file contents):
Revision 1.217 by root, Wed Apr 11 03:05:15 2007 UTC vs.
Revision 1.434 by root, Wed Nov 19 00:06:54 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)).
5 7
8TODO: testcancel
9TODO: guard as SLF - to avoid deadlocks.
10TODO: Coro::Signal as SLF.
11 - avoid deadlock in Coro::Channel if maxsize == 1 (Richard Hundt).
12
135.0
14 - NEW ARCHITECTURE: use the latest 4.x version if you experience
15 stability issues.
16 - bump API version to 7 - all dependents must be recompiled.
17 - removed timed_* functions - they were not being used anyways
18 and should be replaced by a more generic mechanism -
19 and were annoying to support anyways :)
20 - removed SemaphoreSet's waiter method - use sem instead.
21 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
22 - async_pool did free a scalar value twice
23 ("Attempt to unreference...").
24 - fix a longstanding bug where calling terminate on a coro that
25 was waiting for a semaphore that was just becoming available
26 would cause a deadlock (semaphore would get into a state where
27 it was available but waiters were still blocked).
28 - calling throw on a coroutine that is waiting for a semaphore will
29 no longer make it acquire the semaphore (and thus leak a count).
30 - perl's process emulation is now not even theoretically supported
31 anymore.
32 - new function Coro::Semaphore::wait.
33 - use named constants in Coro::Channel (Richard Hundt).
34 - directly patch the entersub opcode calling SLF functions (cede,
35 transfer and so on). this does speed up context switching, but
36 more importanly, it frees us from the hardcoded behaviour of
37 entersub, so we might actually be able to return something from
38 those functions and atcually create new ones.
39 - take advantage of __builtin_frame_address on gcc.
40 - expose THX in coroapi (not sure whether this was a wise decision,
41 as "threaded" perls are running at half speed anyways).
42 - implement execute_slf (schedule-like-function) interface that makes
43 it possible to implement schedule-like-functions in XS.
44 - use new SLF interface to massively speed up Coro::EV by roughly a
45 factor of two.
46 - used new SLF interface to massively speed up Coro::Semaphore by a
47 factor of three.
48 - used new SLF interface to speed up Coro::AIO by roughly a factor of
49 four and reduce its memory usage considerably.
50 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
51 for a nice speedup and vastly more correct behaviour. Also implement
52 a new method "sem" to get at the underlying semaphore object.
53 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
54 (in comparison) 20-40% speedup.
55 - implement Coro::Signal (mostly) in terms of Coro::Semaphore,
56 for some unknown (because I was too lazy), but certain, speedup.
57 - forgot to include Coro/libcoro/README in the dist for all these years.
58 - work around a freebsd pthreads bug (manual testcancel is required as
59 pthread_cond_wait isn't a cancellation point on freebsd).
60
614.913 Sat Nov 15 07:58:28 CET 2008
62 - async_pool did free a scalar value twice
63 ("Attempt to unreference...").
64
654.912 Thu Nov 13 18:31:23 CET 2008
66 - minor cleanups.
67 - use much larger stacks on linux and perl < 5.8.8.
68 - Coro::Debug::new_unix_server did not unlink the socket
69 when destroyed.
70
714.911 Tue Nov 11 04:26:17 CET 2008
72 - "port" to threaded perls.
73
744.91 Mon Nov 10 05:36:38 CET 2008
75 - the ->throw exception object no longer leaks.
76 - creating a new cctx leaked a scopestack entry (memleak).
77 - new coroutines didn't get created with a zero flags field
78 (unknown impact).
79 - calling ->throw on a not-yet-started coroutine should now work
80 instead of being ignored.
81 - ->throw is now supported on Coro::State objects.
82 - clean up cctx creation code a bit.
83 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
84
854.9 Sat Nov 8 17:45:27 CET 2008
86 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
87 - (libcoro) no longer leak threads in the experimental pthread backend,
88 also speed it up considerably.
89 - (libcoro) do not rely on makecontext passing void *'s unscathed.
90 - fix compiletime dependencies on libcoro in the Makefile.
91 - cctx_count wasn't always updated properly.
92 - Coro::State::cctx_stacksize wasn't applied correctly.
93 - new function Coro::State::cctx_max_idle.
94 - the default max number of idle C contexts is now 4.
95 - (libcoro) try harder to get _setjmp/_longjmp.
96 - (libcoro) cleanup and extend the libcoro API to officially
97 allow the creation of empty source contexts.
98 - very experimental workaround for the totally broken netbsd platform.
99 - tried to hack around openbsd bugs.
100
1014.804 Wed Nov 5 16:36:00 CET 2008
102 - Coro::Debug::new_unix_server would not create a non-blocking listening
103 socket, sometimes causing freezes.
104 - (libcoro) fix misaligned stack points for setjmp and assembly
105 methods, which can cause crashes on x86/x86_64 with a sufficiently
106 aggressive compiler.
107 - new function: Coro::Debug::new_tcp_server.
108 - move ->throw into the Coro class because it only works on coro objects.
109
1104.803 Mon Nov 3 17:16:12 CET 2008
111 - (libcoro) use a global asm statement to become independent of gcc
112 otpimisations for CORO_ASM (thanks to pippijn for the idea).
113 - try to workaround yet another broken bsd, this time dragonfly.
114
1154.802 Thu Oct 30 10:56:12 CET 2008
116 - support -fno-omit-frame-pointer on x86 with the assembly method.
117 - tune 01_unblock.t tests a bit.
118
1194.801 Wed Oct 22 18:33:37 CEST 2008
120 - improve readline speed for very long "lines".
121 - backport to 5.8.8.
122
1234.8 Thu Oct 2 13:34:40 CEST 2008
124 - new function Coro::AIO::aio_wait.
125 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
126 - greatly speed up and reduce memory usage of Coro::AIO requests.
127 - implement some other µ-optimisations.
128
1294.749 Mon Sep 29 14:40:12 CEST 2008
130 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
131
1324.748 Sat Sep 27 14:03:19 CEST 2008
133 - implement, but do not document, PerlIO::cede(granularity).
134 - Coro::Storable forgot to wrap Storable::pstore.
135 - work around the multitude of leaks and memory corruption
136 bugs in PerlIO::via by using our own C-level perliol. As a side
137 effect, Coro::Storable is now much, much, much faster.
138
1394.747 Tue Sep 23 01:59:41 CEST 2008
140 - fix a per-cv memleak (one empty array was leaked per
141 code reference).
142 - avoid a crash in coro->call|rss when the coroutine was already
143 destroyed (most noticably when using Coro::Debug::ps :)
144 - also protect *Storable::FILE.
145 - push up default storable granularity to 20ms.
146
1474.746 Sun Sep 21 03:22:20 CEST 2008
148 - be more insistent on locking Storable against reentrancy
149 in Coro::Storable.
150 - move swap_def?v and throw to Coro::State, as documented.
151
1524.745 Thu Jul 24 00:14:38 CEST 2008
153 - remove debugging code related to MgPV_nolen_const, also try to
154 make it compile with perl 5.8.6 (yes, apple apparently loves
155 outdated software). Reported by John S.
156
1574.744 Tue Jul 8 22:06:35 CEST 2008
158 - correctly provide default DIE/WARN handlers as documented.
159 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
160 implementations inside perl work fine for us.
161
1624.743 Mon Jun 16 00:21:57 CEST 2008
163 - when using Coro::EV without running EV::loop it could
164 result in busy-waiting for events, this has been fixed.
165 - reduce codesize and improve performance by using EV_DEFAULT_UC.
166
1674.742 Sat May 31 14:10:21 CEST 2008
168 - implement a workaround for (some) perl <5.8.8 versions.
169 - require EV 3.3+.
170
1714.741 Fri May 30 23:33:09 CEST 2008
172 - tell netbsd how utterly broken their imitation of an OS is
173 and refuse to build by default if pthreads are in use.
174 - switch to "s" method on all bsd's by default, as their ucontext
175 stuff seems just too broken.
176 - fix a bug in Coro::Select.
177
1784.74 Thu May 29 20:05:31 CEST 2008
179 - do not test Coro::LWP for lack of dependencies.
180 - do not test Coro::Select for lack of working perls.
181
1824.73 Thu May 29 2008
183 - fix a bug in Coro::EV which would cause it to block despite
184 there being runnable coroutines.
185 - sprinkle "no warnings" freely over everything, also suppress
186 warnings for some other modules.
187 - fix typo in WSAEWOULDBLOCK.
188
1894.72 Sun May 25 05:14:36 CEST 2008
190 - tweak META.yaml a bit, unfortunately, there is no documented way
191 to have optional dependencies with CPAN. doh :(
192 - avoid running some tests on windows because they would fail due to
193 perl bug (broken fork, broken pipes...).
194 - work around perl on windows bugs where perl returns undocumented
195 error codes for sysread, syswrite etc. by taking advantage
196 of AnyEvent's workaround for that problem.
197 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
198 a common perl implementation bug on windows.
199 - use unix domain sockets in testsuite to work around
200 common perl implementation bugs on widows (they are emulated by
201 tcp sockets on windows. ugh.)
202
2034.71 Sat May 24 20:01:27 CEST 2008
204 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
205 - take advantage of async name resolution of AnyEvent::Util.
206 - work around brutal inet_aton override in Coro::LWP.
207 - take advantage of the readyhook in Coro::EV, for smoother
208 scheduling.
209
2104.7 Sun May 11 00:32:19 CEST 2008
211 - completely reworked the Coro manpage.
212 - added Coro::AnyEvent, generic event loop integration.
213 - implement cancel, ready and kill commands in Coro::Debug.
214 - document find_coro in Coro::Debug.
215 - incompatible change: rename has_stack to has_cctx.
216 - Coro::AIO and Coro::BDB no longer force event model detection,
217 use AnyEvent::AIO and AnyEvent::BDB.
218
2194.6 Sat Apr 26 10:05:14 CEST 2008
220 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
221 by the Coro module. It was a mistake to have it in the first place.
222 - (experimental) support for activestate perl 5.10 (method "w").
223 - (experimental) support for strawberry perl (method "a").
224 - coro_sigelem_set did not return a value although it had to,
225 actual impact unknown.
226
2274.51 Mon Apr 14 13:28:27 CEST 2008
228 - make it compile again on 5.8.
229
2304.50 Thu Apr 10 09:43:17 CEST 2008
231 - I did it twice! (see 4.49).
232
2334.49 Sun Apr 6 21:23:31 CEST 2008
234 - grr, instead of compiling the recent changes on 5.10 only they
235 were compiled on 5.8 only.
236
2374.48 Sun Apr 6 20:36:46 CEST 2008
238 - allow coroutine switches during eval's under 5.10.x, as it seems
239 the parser is a per-interpreter option now, so this is safe
240 (this might fix the odd crashing bug).
241 - drop support for 5.9.x versions: they are dead, jim.
242
2434.47 Sun Apr 6 00:37:52 CEST 2008
244 - force cctx allocation on API calls: we know we need to force one
245 and gcc actually manages to confuse our heuristic nowadays,
246 leading to crashes and worse.
247 - document force_cctx.
248
2494.46 Fri Apr 4 22:05:43 CEST 2008
250 - upgrade libcoro, resulting in pthread-backend (which was only created
251 to fulfill the rules of the programming languages shootout).
252
2534.45 Thu Mar 13 11:55:36 CET 2008
254 - fix a file leaking bug in eg/mhyttpd that would allow
255 downloading of any file (reported by oesi).
256 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
257 (also add testcase).
258 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
259 apparently having loads of fun with that).
260 - implement $state->swap_defsv, ->swap_defav and document ->throw.
261
2624.4 Wed Feb 13 16:44:29 CET 2008
263 - only assume .cfi pseudo isns exist on GNU/Linux.
264 - add get_timed method to Coro::Channels.
265 - fixed Coro::Debug manpage.
266 - perl 5.11 compatbility improvement based on patch by
267 Andreas König.
268
2694.37 Sun Jan 20 11:25:23 CET 2008
270 - soften the check for an active parser for perl 5.10 (avoiding
271 "Coro::State::transfer called while parsing" in many cases).
272
2734.36 Sun Jan 13 10:53:56 CET 2008
274 - reset diehook when terminating from an async_pool as to not
275 trigger any __DIE__ handlers.
276
2774.35 Sun Jan 13 04:14:13 CET 2008
278 - "bt" debug command now displays any exceptions
279 from longmess and also skips the innermost
280 stackframes, giving more useufl output.
281 - allow backtraces in coroutines blocked in Coro::EV,
282 at a <1% speed hit.
283 - handle localising of $SIG{__WARN__} and __DIE__
284 properly (with a proper amount of dirty hacking).
285
2864.34 Sat Dec 22 17:49:53 CET 2007
287 - upgrade to EV version 2.0 API.
288
2894.33 Mon Dec 17 08:36:12 CET 2007
290 - make Coro::AIO etc. loadable in the absence of EV.
291
2924.32 Mon Dec 17 07:46:02 CET 2007
293 - majorly improved Coro::Handle's performance with Coro::EV.
294 - implemented the until now mythical Coro::BDB module.
295 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
296
2974.31 Wed Dec 5 12:32:39 CET 2007
298 - remove warn statement form Coro::Util.
299
3004.3 Tue Dec 4 20:33:14 CET 2007
301 - calls to the idle function could cause stack corruption
302 when the stack changed.
303 - do no longer rely on the presence of EV::DNS if EV is used
304 (because it is gone), but instead take avdantage of EV::ADNS
305 if available.
306 - add ($) prototypes to all functions in Coro::Storable.
307 - use a conventional (safer) idle callback in Coro::EV.
308 - do accept quickly in Coro::Debug to avoid endless loops.
309
3104.22 Fri Nov 30 16:04:04 CET 2007
311 - really use optimised versions for Event and EV in Coro::Util
312 and Coro::Handle.
313
3144.21 Sun Nov 25 10:48:59 CET 2007
315 - fix a spurious memory read.
316 - Coro::EV no longer keeps the eventloop "alive".
317
3184.2 Fri Nov 9 20:47:05 CET 2007
319 - enable/disable tracing from a new coroutine, not a pooled one.
320 - fix a memleak in Coro::Event.
321 - removed killall call from fork_eval.
322 - made sure store_fd is already loaded so that fork_eval
323 does not have to parse autoload in each subprocess.
324 - only use assembly method if -O switch is in $Config{optimize}.
325 - add (optional) Coro::EV module, so far the best event loop module
326 directly supported by Coro.
327 - if the event model is EV, use EV::DNS to resolve
328 stuff in Coro::Util.
329 - don't get confused by multiple event notifications in Coro::Handle.
330 - initial support for EV (libevent interface).
331 - require Event and EV using configure_requires, to force their existance.
332
3334.13 Wed Oct 24 07:26:45 CEST 2007
334 - add Coro::Storable::blocking_thaw.
335 - use a vastly more complicated technique to localise
336 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
337 - use a coroutine for the idle callback Coro::Event,
338 instead of running Event in the current coroutine context.
339 This also catches recursive invocations.
340 - actually report fork errors in gethostbyname and inet_aton.
341
3424.11 Thu Oct 11 02:40:24 CEST 2007
343 - port to threaded perls.
344
3454.1 Thu Oct 11 02:38:16 CEST 2007
346 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
347 be local to each coro (see Coro::State).
348 - incompatible change: for very deep reasons, cede and cede_notself
349 cannot return anything, so nothing will be returned.
350 - possibly bring back 5.10 compatibility (untested).
351 - work around stupid (and wrong) warning on 5.10 :(.
352 - overlay the saved state over the context stack. This saves
353 a few hundred bytes per coroutine on average and also
354 speeds up context switching a bit.
355 - further tune default stack sizes.
356 - (more) correctly calculate stack usage in coro_rss.
357 - Coro::Storable::blocking_* did not properly lock
358 resulting in races between coroutines.
359 - added Coro::Storable::guard.
360 - stopping to trace a coroutine could destroy the cctx of
361 an unrelated coroutine.
362 - explain the relationship between Perl and C coroutines in
363 more detail in Coro::State.
364 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
365 causing a fork per resolve. This also affected Coro::Socket.
366 - switch to a separate stack in $coro->call/eval to avoid
367 invalidating pointers.
368
3694.03 Sat Oct 6 21:24:00 CEST 2007
370 - added Coro::throw method.
371 - minor code cleanups.
372
3734.02 Sat Oct 6 02:36:47 CEST 2007
374 - fix a very minor per-coroutine memleak (a single codereference).
375 - fixed a bug where the currently in-use c context would be freed
376 prematurely (can happen only when programs change the stacksize
377 or use tracing).
378 - tracing can no longer keep a coro alive after it terminated.
379 - do static branch prediction in the common path for gcc. gives
380 about 2-5% speed improvement here.
381
3824.01 Fri Oct 5 22:10:49 CEST 2007
383 - instead of recreating *a* standard output handle we simply
384 use STDOUT, which is faster and hopefully more robust.
385
3864.0 Fri Oct 5 12:56:00 CEST 2007
387 - incompatibly changed Coro::Storable::freeze.
388 - major new feature: added Coro::Debug, for interactive coroutine
389 debugging, tracing and much more.
390 - major bug fix: unbelievable, but true: $_, $/ and many other
391 "saved" variables actually weren't being saved. This has been fixed,
392 of course, while increasing performance while losing all the save
393 flags.
394 - save flags are gone, and all the api functions dealing with them.
395 - added Coro::Semaphore::adjust.
396 - added Coro::Util::fork_eval.
397 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
398 - added Coro::killall.
399 - reduce initial stack sizes to allow for "micro-coroutines".
400 - better async_pool resource management, moved parts of async_pool
401 handling to XS (major speed improvement).
402 - actually croak before modifying important data structures.
403 - refuse to transfer while compiling.
404 - possibly support eval EXPR better now.
405 - enable assembly per default on linux+bsd x86+amd64.
406 - all internal members were renamed _something for easier subclassing.
407 - many minor tweaks.
408
4093.63 Wed May 16 14:10:06 CEST 2007
410 - implement handcoded assembly for x86/amd64 SVR ABI.
411
4123.62 Fri Apr 27 21:36:06 CEST 2007
413 - upgrade libcoro (which might set unwind info correctly).
414 - change default on linux to setjmp/longjmp.
415
4163.61 Thu Apr 19 12:36:18 CEST 2007
417 - Coro::Storable caused an endless loop when thawing invalid
418 pst's sometimes.
419 - use a Semaphore in Coro::Storable, as Storable doesn't
420 seem to be reentrant (although it is documented to
421 be threadsafe...).
422 - fix Coro::Signal to bring back the original unreliable
423 but stateful semantics.
424 - fixed a lot of typos in Coro.pm (patch submitted by David
425 Steinbrunner, which applied flawlessly).
426
4273.6 Sat Apr 14 17:13:31 CEST 2007
6 - added some bugfixes to get eg/myhttpd working again. 428 - added some bugfixes to get eg/myhttpd working again.
429 - added Coro::Storable for often-cede'ing freeze/thaw.
430 - try to do a clean exit when a coroutine calls exit
431 (EXPERIMENTAL).
432 - got rid of indirect call through _coro_init.
433 - updated the partly antique examples in eg/ to
434 work again and be a bit less magic, too.
435 - fixed Coro::Signal semantics to work as documented again.
7 436
83.55 Sun Mar 25 01:20:47 CET 2007 4373.55 Sun Mar 25 01:20:47 CET 2007
9 - add SAVE_DEFFH to save the default filehandle and enable 438 - add SAVE_DEFFH to save the default filehandle and enable
10 it by default. 439 it by default.
11 - finally move socket-operations from Coro::Socket to Coro::Handle 440 - finally move socket-operations from Coro::Socket to Coro::Handle

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