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Comparing Coro/Changes (file contents):
Revision 1.238 by root, Fri Sep 21 02:26:43 2007 UTC vs.
Revision 1.433 by root, Tue Nov 18 23:20:41 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: 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 - forgot to include Coro/libcoro/README in the dist for all these years.
56 - work around a freebsd pthreads bug (manual testcancel is required as
57 pthread_cond_wait isn't a cancellation point on freebsd).
58
594.913 Sat Nov 15 07:58:28 CET 2008
60 - async_pool did free a scalar value twice
61 ("Attempt to unreference...").
62
634.912 Thu Nov 13 18:31:23 CET 2008
64 - minor cleanups.
65 - use much larger stacks on linux and perl < 5.8.8.
66 - Coro::Debug::new_unix_server did not unlink the socket
67 when destroyed.
68
694.911 Tue Nov 11 04:26:17 CET 2008
70 - "port" to threaded perls.
71
724.91 Mon Nov 10 05:36:38 CET 2008
73 - the ->throw exception object no longer leaks.
74 - creating a new cctx leaked a scopestack entry (memleak).
75 - new coroutines didn't get created with a zero flags field
76 (unknown impact).
77 - calling ->throw on a not-yet-started coroutine should now work
78 instead of being ignored.
79 - ->throw is now supported on Coro::State objects.
80 - clean up cctx creation code a bit.
81 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
82
834.9 Sat Nov 8 17:45:27 CET 2008
84 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
85 - (libcoro) no longer leak threads in the experimental pthread backend,
86 also speed it up considerably.
87 - (libcoro) do not rely on makecontext passing void *'s unscathed.
88 - fix compiletime dependencies on libcoro in the Makefile.
89 - cctx_count wasn't always updated properly.
90 - Coro::State::cctx_stacksize wasn't applied correctly.
91 - new function Coro::State::cctx_max_idle.
92 - the default max number of idle C contexts is now 4.
93 - (libcoro) try harder to get _setjmp/_longjmp.
94 - (libcoro) cleanup and extend the libcoro API to officially
95 allow the creation of empty source contexts.
96 - very experimental workaround for the totally broken netbsd platform.
97 - tried to hack around openbsd bugs.
98
994.804 Wed Nov 5 16:36:00 CET 2008
100 - Coro::Debug::new_unix_server would not create a non-blocking listening
101 socket, sometimes causing freezes.
102 - (libcoro) fix misaligned stack points for setjmp and assembly
103 methods, which can cause crashes on x86/x86_64 with a sufficiently
104 aggressive compiler.
105 - new function: Coro::Debug::new_tcp_server.
106 - move ->throw into the Coro class because it only works on coro objects.
107
1084.803 Mon Nov 3 17:16:12 CET 2008
109 - (libcoro) use a global asm statement to become independent of gcc
110 otpimisations for CORO_ASM (thanks to pippijn for the idea).
111 - try to workaround yet another broken bsd, this time dragonfly.
112
1134.802 Thu Oct 30 10:56:12 CET 2008
114 - support -fno-omit-frame-pointer on x86 with the assembly method.
115 - tune 01_unblock.t tests a bit.
116
1174.801 Wed Oct 22 18:33:37 CEST 2008
118 - improve readline speed for very long "lines".
119 - backport to 5.8.8.
120
1214.8 Thu Oct 2 13:34:40 CEST 2008
122 - new function Coro::AIO::aio_wait.
123 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
124 - greatly speed up and reduce memory usage of Coro::AIO requests.
125 - implement some other µ-optimisations.
126
1274.749 Mon Sep 29 14:40:12 CEST 2008
128 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
129
1304.748 Sat Sep 27 14:03:19 CEST 2008
131 - implement, but do not document, PerlIO::cede(granularity).
132 - Coro::Storable forgot to wrap Storable::pstore.
133 - work around the multitude of leaks and memory corruption
134 bugs in PerlIO::via by using our own C-level perliol. As a side
135 effect, Coro::Storable is now much, much, much faster.
136
1374.747 Tue Sep 23 01:59:41 CEST 2008
138 - fix a per-cv memleak (one empty array was leaked per
139 code reference).
140 - avoid a crash in coro->call|rss when the coroutine was already
141 destroyed (most noticably when using Coro::Debug::ps :)
142 - also protect *Storable::FILE.
143 - push up default storable granularity to 20ms.
144
1454.746 Sun Sep 21 03:22:20 CEST 2008
146 - be more insistent on locking Storable against reentrancy
147 in Coro::Storable.
148 - move swap_def?v and throw to Coro::State, as documented.
149
1504.745 Thu Jul 24 00:14:38 CEST 2008
151 - remove debugging code related to MgPV_nolen_const, also try to
152 make it compile with perl 5.8.6 (yes, apple apparently loves
153 outdated software). Reported by John S.
154
1554.744 Tue Jul 8 22:06:35 CEST 2008
156 - correctly provide default DIE/WARN handlers as documented.
157 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
158 implementations inside perl work fine for us.
159
1604.743 Mon Jun 16 00:21:57 CEST 2008
161 - when using Coro::EV without running EV::loop it could
162 result in busy-waiting for events, this has been fixed.
163 - reduce codesize and improve performance by using EV_DEFAULT_UC.
164
1654.742 Sat May 31 14:10:21 CEST 2008
166 - implement a workaround for (some) perl <5.8.8 versions.
167 - require EV 3.3+.
168
1694.741 Fri May 30 23:33:09 CEST 2008
170 - tell netbsd how utterly broken their imitation of an OS is
171 and refuse to build by default if pthreads are in use.
172 - switch to "s" method on all bsd's by default, as their ucontext
173 stuff seems just too broken.
174 - fix a bug in Coro::Select.
175
1764.74 Thu May 29 20:05:31 CEST 2008
177 - do not test Coro::LWP for lack of dependencies.
178 - do not test Coro::Select for lack of working perls.
179
1804.73 Thu May 29 2008
181 - fix a bug in Coro::EV which would cause it to block despite
182 there being runnable coroutines.
183 - sprinkle "no warnings" freely over everything, also suppress
184 warnings for some other modules.
185 - fix typo in WSAEWOULDBLOCK.
186
1874.72 Sun May 25 05:14:36 CEST 2008
188 - tweak META.yaml a bit, unfortunately, there is no documented way
189 to have optional dependencies with CPAN. doh :(
190 - avoid running some tests on windows because they would fail due to
191 perl bug (broken fork, broken pipes...).
192 - work around perl on windows bugs where perl returns undocumented
193 error codes for sysread, syswrite etc. by taking advantage
194 of AnyEvent's workaround for that problem.
195 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
196 a common perl implementation bug on windows.
197 - use unix domain sockets in testsuite to work around
198 common perl implementation bugs on widows (they are emulated by
199 tcp sockets on windows. ugh.)
200
2014.71 Sat May 24 20:01:27 CEST 2008
202 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
203 - take advantage of async name resolution of AnyEvent::Util.
204 - work around brutal inet_aton override in Coro::LWP.
205 - take advantage of the readyhook in Coro::EV, for smoother
206 scheduling.
207
2084.7 Sun May 11 00:32:19 CEST 2008
209 - completely reworked the Coro manpage.
210 - added Coro::AnyEvent, generic event loop integration.
211 - implement cancel, ready and kill commands in Coro::Debug.
212 - document find_coro in Coro::Debug.
213 - incompatible change: rename has_stack to has_cctx.
214 - Coro::AIO and Coro::BDB no longer force event model detection,
215 use AnyEvent::AIO and AnyEvent::BDB.
216
2174.6 Sat Apr 26 10:05:14 CEST 2008
218 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
219 by the Coro module. It was a mistake to have it in the first place.
220 - (experimental) support for activestate perl 5.10 (method "w").
221 - (experimental) support for strawberry perl (method "a").
222 - coro_sigelem_set did not return a value although it had to,
223 actual impact unknown.
224
2254.51 Mon Apr 14 13:28:27 CEST 2008
226 - make it compile again on 5.8.
227
2284.50 Thu Apr 10 09:43:17 CEST 2008
229 - I did it twice! (see 4.49).
230
2314.49 Sun Apr 6 21:23:31 CEST 2008
232 - grr, instead of compiling the recent changes on 5.10 only they
233 were compiled on 5.8 only.
234
2354.48 Sun Apr 6 20:36:46 CEST 2008
236 - allow coroutine switches during eval's under 5.10.x, as it seems
237 the parser is a per-interpreter option now, so this is safe
238 (this might fix the odd crashing bug).
239 - drop support for 5.9.x versions: they are dead, jim.
240
2414.47 Sun Apr 6 00:37:52 CEST 2008
242 - force cctx allocation on API calls: we know we need to force one
243 and gcc actually manages to confuse our heuristic nowadays,
244 leading to crashes and worse.
245 - document force_cctx.
246
2474.46 Fri Apr 4 22:05:43 CEST 2008
248 - upgrade libcoro, resulting in pthread-backend (which was only created
249 to fulfill the rules of the programming languages shootout).
250
2514.45 Thu Mar 13 11:55:36 CET 2008
252 - fix a file leaking bug in eg/mhyttpd that would allow
253 downloading of any file (reported by oesi).
254 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
255 (also add testcase).
256 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
257 apparently having loads of fun with that).
258 - implement $state->swap_defsv, ->swap_defav and document ->throw.
259
2604.4 Wed Feb 13 16:44:29 CET 2008
261 - only assume .cfi pseudo isns exist on GNU/Linux.
262 - add get_timed method to Coro::Channels.
263 - fixed Coro::Debug manpage.
264 - perl 5.11 compatbility improvement based on patch by
265 Andreas König.
266
2674.37 Sun Jan 20 11:25:23 CET 2008
268 - soften the check for an active parser for perl 5.10 (avoiding
269 "Coro::State::transfer called while parsing" in many cases).
270
2714.36 Sun Jan 13 10:53:56 CET 2008
272 - reset diehook when terminating from an async_pool as to not
273 trigger any __DIE__ handlers.
274
2754.35 Sun Jan 13 04:14:13 CET 2008
276 - "bt" debug command now displays any exceptions
277 from longmess and also skips the innermost
278 stackframes, giving more useufl output.
279 - allow backtraces in coroutines blocked in Coro::EV,
280 at a <1% speed hit.
281 - handle localising of $SIG{__WARN__} and __DIE__
282 properly (with a proper amount of dirty hacking).
283
2844.34 Sat Dec 22 17:49:53 CET 2007
285 - upgrade to EV version 2.0 API.
286
2874.33 Mon Dec 17 08:36:12 CET 2007
288 - make Coro::AIO etc. loadable in the absence of EV.
289
2904.32 Mon Dec 17 07:46:02 CET 2007
291 - majorly improved Coro::Handle's performance with Coro::EV.
292 - implemented the until now mythical Coro::BDB module.
293 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
294
2954.31 Wed Dec 5 12:32:39 CET 2007
296 - remove warn statement form Coro::Util.
297
2984.3 Tue Dec 4 20:33:14 CET 2007
299 - calls to the idle function could cause stack corruption
300 when the stack changed.
301 - do no longer rely on the presence of EV::DNS if EV is used
302 (because it is gone), but instead take avdantage of EV::ADNS
303 if available.
304 - add ($) prototypes to all functions in Coro::Storable.
305 - use a conventional (safer) idle callback in Coro::EV.
306 - do accept quickly in Coro::Debug to avoid endless loops.
307
3084.22 Fri Nov 30 16:04:04 CET 2007
309 - really use optimised versions for Event and EV in Coro::Util
310 and Coro::Handle.
311
3124.21 Sun Nov 25 10:48:59 CET 2007
313 - fix a spurious memory read.
314 - Coro::EV no longer keeps the eventloop "alive".
315
3164.2 Fri Nov 9 20:47:05 CET 2007
317 - enable/disable tracing from a new coroutine, not a pooled one.
318 - fix a memleak in Coro::Event.
319 - removed killall call from fork_eval.
320 - made sure store_fd is already loaded so that fork_eval
321 does not have to parse autoload in each subprocess.
322 - only use assembly method if -O switch is in $Config{optimize}.
323 - add (optional) Coro::EV module, so far the best event loop module
324 directly supported by Coro.
325 - if the event model is EV, use EV::DNS to resolve
326 stuff in Coro::Util.
327 - don't get confused by multiple event notifications in Coro::Handle.
328 - initial support for EV (libevent interface).
329 - require Event and EV using configure_requires, to force their existance.
330
3314.13 Wed Oct 24 07:26:45 CEST 2007
332 - add Coro::Storable::blocking_thaw.
333 - use a vastly more complicated technique to localise
334 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
335 - use a coroutine for the idle callback Coro::Event,
336 instead of running Event in the current coroutine context.
337 This also catches recursive invocations.
338 - actually report fork errors in gethostbyname and inet_aton.
339
3404.11 Thu Oct 11 02:40:24 CEST 2007
341 - port to threaded perls.
342
3434.1 Thu Oct 11 02:38:16 CEST 2007
344 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
345 be local to each coro (see Coro::State).
346 - incompatible change: for very deep reasons, cede and cede_notself
347 cannot return anything, so nothing will be returned.
348 - possibly bring back 5.10 compatibility (untested).
349 - work around stupid (and wrong) warning on 5.10 :(.
350 - overlay the saved state over the context stack. This saves
351 a few hundred bytes per coroutine on average and also
352 speeds up context switching a bit.
353 - further tune default stack sizes.
354 - (more) correctly calculate stack usage in coro_rss.
355 - Coro::Storable::blocking_* did not properly lock
356 resulting in races between coroutines.
357 - added Coro::Storable::guard.
358 - stopping to trace a coroutine could destroy the cctx of
359 an unrelated coroutine.
360 - explain the relationship between Perl and C coroutines in
361 more detail in Coro::State.
362 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
363 causing a fork per resolve. This also affected Coro::Socket.
364 - switch to a separate stack in $coro->call/eval to avoid
365 invalidating pointers.
366
3674.03 Sat Oct 6 21:24:00 CEST 2007
368 - added Coro::throw method.
369 - minor code cleanups.
370
3714.02 Sat Oct 6 02:36:47 CEST 2007
372 - fix a very minor per-coroutine memleak (a single codereference).
373 - fixed a bug where the currently in-use c context would be freed
374 prematurely (can happen only when programs change the stacksize
375 or use tracing).
376 - tracing can no longer keep a coro alive after it terminated.
377 - do static branch prediction in the common path for gcc. gives
378 about 2-5% speed improvement here.
379
3804.01 Fri Oct 5 22:10:49 CEST 2007
381 - instead of recreating *a* standard output handle we simply
382 use STDOUT, which is faster and hopefully more robust.
383
3844.0 Fri Oct 5 12:56:00 CEST 2007
11 - incompatibly changed Coro::Storable::freeze. 385 - incompatibly changed Coro::Storable::freeze.
12 - added Coro::Debug, interactive coroutine debugging. 386 - major new feature: added Coro::Debug, for interactive coroutine
387 debugging, tracing and much more.
388 - major bug fix: unbelievable, but true: $_, $/ and many other
389 "saved" variables actually weren't being saved. This has been fixed,
390 of course, while increasing performance while losing all the save
391 flags.
392 - save flags are gone, and all the api functions dealing with them.
13 - added Coro::Semaphore::adjust. 393 - added Coro::Semaphore::adjust.
14 - added Coro::Util::fork_eval. 394 - added Coro::Util::fork_eval.
15 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}. 395 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
396 - added Coro::killall.
16 - reduce initial stack sizes to allow for "micro-coroutines". 397 - reduce initial stack sizes to allow for "micro-coroutines".
398 - better async_pool resource management, moved parts of async_pool
399 handling to XS (major speed improvement).
400 - actually croak before modifying important data structures.
401 - refuse to transfer while compiling.
402 - possibly support eval EXPR better now.
403 - enable assembly per default on linux+bsd x86+amd64.
404 - all internal members were renamed _something for easier subclassing.
17 - many minor tweaks. 405 - many minor tweaks.
18 406
193.63 Wed May 16 14:10:06 CEST 2007 4073.63 Wed May 16 14:10:06 CEST 2007
20 - implement handcoded assembly for x86/amd64 SVR ABI. 408 - implement handcoded assembly for x86/amd64 SVR ABI.
21 409

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