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Comparing Coro/Changes (file contents):
Revision 1.256 by root, Fri Oct 5 20:11:25 2007 UTC vs.
Revision 1.439 by root, Wed Nov 19 10:44:41 2008 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO. 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang 4TODO: maybe implement a default message channel, very much like Erlang's
5 (which is cool in a lot of important aspects (failures!), 5 actor model (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)). 6 but very lacking in others (higher level ipc)).
7 7
8TODO: testcancel
9TODO: guard as SLF - to avoid deadlocks.
10 - avoid deadlock in Coro::Channel if maxsize == 1 (Richard Hundt).
11
125.0
13 - NEW ARCHITECTURE: use the latest 4.x version if you experience
14 stability issues.
15 - bump API version to 7 - all dependents must be recompiled.
16 - removed timed_* functions - they were not being used anyways
17 and should be replaced by a more generic mechanism -
18 and were annoying to support anyways :)
19 - removed SemaphoreSet's waiter method - use sem instead.
20 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
21 - async_pool did free a scalar value twice
22 ("Attempt to unreference...").
23 - fix a longstanding bug where calling terminate on a coro that
24 was waiting for a semaphore that was just becoming available
25 would cause a deadlock (semaphore would get into a state where
26 it was available but waiters were still blocked).
27 - calling throw on a coroutine that is waiting for a semaphore will
28 no longer make it acquire the semaphore (and thus leak a count).
29 - perl's process emulation is now not even theoretically supported
30 anymore.
31 - new functions Coro::rouse_cb and Coro::rouse_wait.
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 - used new SLF interface to reimplement Coro::Signal gaining
56 some unknown (because I was too lazy), but certain, speedup, and also
57 making signals reliable for the first time.
58 - forgot to include Coro/libcoro/README in the dist for all these years.
59 - work around a freebsd pthreads bug (manual testcancel is required as
60 pthread_cond_wait isn't a cancellation point on freebsd).
61 - use new rouse functions to speed up and simplify Coro::BDB.
62 - make "prefer perl native functions" work with threaded perls.
63 - (libcoro) lots of minor cleanups and portability improvements.
64
654.913 Sat Nov 15 07:58:28 CET 2008
66 - async_pool did free a scalar value twice
67 ("Attempt to unreference...").
68
694.912 Thu Nov 13 18:31:23 CET 2008
70 - minor cleanups.
71 - use much larger stacks on linux and perl < 5.8.8.
72 - Coro::Debug::new_unix_server did not unlink the socket
73 when destroyed.
74
754.911 Tue Nov 11 04:26:17 CET 2008
76 - "port" to threaded perls.
77
784.91 Mon Nov 10 05:36:38 CET 2008
79 - the ->throw exception object no longer leaks.
80 - creating a new cctx leaked a scopestack entry (memleak).
81 - new coroutines didn't get created with a zero flags field
82 (unknown impact).
83 - calling ->throw on a not-yet-started coroutine should now work
84 instead of being ignored.
85 - ->throw is now supported on Coro::State objects.
86 - clean up cctx creation code a bit.
87 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
88
894.9 Sat Nov 8 17:45:27 CET 2008
90 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
91 - (libcoro) no longer leak threads in the experimental pthread backend,
92 also speed it up considerably.
93 - (libcoro) do not rely on makecontext passing void *'s unscathed.
94 - fix compiletime dependencies on libcoro in the Makefile.
95 - cctx_count wasn't always updated properly.
96 - Coro::State::cctx_stacksize wasn't applied correctly.
97 - new function Coro::State::cctx_max_idle.
98 - the default max number of idle C contexts is now 4.
99 - (libcoro) try harder to get _setjmp/_longjmp.
100 - (libcoro) cleanup and extend the libcoro API to officially
101 allow the creation of empty source contexts.
102 - very experimental workaround for the totally broken netbsd platform.
103 - tried to hack around openbsd bugs.
104
1054.804 Wed Nov 5 16:36:00 CET 2008
106 - Coro::Debug::new_unix_server would not create a non-blocking listening
107 socket, sometimes causing freezes.
108 - (libcoro) fix misaligned stack points for setjmp and assembly
109 methods, which can cause crashes on x86/x86_64 with a sufficiently
110 aggressive compiler.
111 - new function: Coro::Debug::new_tcp_server.
112 - move ->throw into the Coro class because it only works on coro objects.
113
1144.803 Mon Nov 3 17:16:12 CET 2008
115 - (libcoro) use a global asm statement to become independent of gcc
116 otpimisations for CORO_ASM (thanks to pippijn for the idea).
117 - try to workaround yet another broken bsd, this time dragonfly.
118
1194.802 Thu Oct 30 10:56:12 CET 2008
120 - support -fno-omit-frame-pointer on x86 with the assembly method.
121 - tune 01_unblock.t tests a bit.
122
1234.801 Wed Oct 22 18:33:37 CEST 2008
124 - improve readline speed for very long "lines".
125 - backport to 5.8.8.
126
1274.8 Thu Oct 2 13:34:40 CEST 2008
128 - new function Coro::AIO::aio_wait.
129 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
130 - greatly speed up and reduce memory usage of Coro::AIO requests.
131 - implement some other µ-optimisations.
132
1334.749 Mon Sep 29 14:40:12 CEST 2008
134 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
135
1364.748 Sat Sep 27 14:03:19 CEST 2008
137 - implement, but do not document, PerlIO::cede(granularity).
138 - Coro::Storable forgot to wrap Storable::pstore.
139 - work around the multitude of leaks and memory corruption
140 bugs in PerlIO::via by using our own C-level perliol. As a side
141 effect, Coro::Storable is now much, much, much faster.
142
1434.747 Tue Sep 23 01:59:41 CEST 2008
144 - fix a per-cv memleak (one empty array was leaked per
145 code reference).
146 - avoid a crash in coro->call|rss when the coroutine was already
147 destroyed (most noticably when using Coro::Debug::ps :)
148 - also protect *Storable::FILE.
149 - push up default storable granularity to 20ms.
150
1514.746 Sun Sep 21 03:22:20 CEST 2008
152 - be more insistent on locking Storable against reentrancy
153 in Coro::Storable.
154 - move swap_def?v and throw to Coro::State, as documented.
155
1564.745 Thu Jul 24 00:14:38 CEST 2008
157 - remove debugging code related to MgPV_nolen_const, also try to
158 make it compile with perl 5.8.6 (yes, apple apparently loves
159 outdated software). Reported by John S.
160
1614.744 Tue Jul 8 22:06:35 CEST 2008
162 - correctly provide default DIE/WARN handlers as documented.
163 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
164 implementations inside perl work fine for us.
165
1664.743 Mon Jun 16 00:21:57 CEST 2008
167 - when using Coro::EV without running EV::loop it could
168 result in busy-waiting for events, this has been fixed.
169 - reduce codesize and improve performance by using EV_DEFAULT_UC.
170
1714.742 Sat May 31 14:10:21 CEST 2008
172 - implement a workaround for (some) perl <5.8.8 versions.
173 - require EV 3.3+.
174
1754.741 Fri May 30 23:33:09 CEST 2008
176 - tell netbsd how utterly broken their imitation of an OS is
177 and refuse to build by default if pthreads are in use.
178 - switch to "s" method on all bsd's by default, as their ucontext
179 stuff seems just too broken.
180 - fix a bug in Coro::Select.
181
1824.74 Thu May 29 20:05:31 CEST 2008
183 - do not test Coro::LWP for lack of dependencies.
184 - do not test Coro::Select for lack of working perls.
185
1864.73 Thu May 29 2008
187 - fix a bug in Coro::EV which would cause it to block despite
188 there being runnable coroutines.
189 - sprinkle "no warnings" freely over everything, also suppress
190 warnings for some other modules.
191 - fix typo in WSAEWOULDBLOCK.
192
1934.72 Sun May 25 05:14:36 CEST 2008
194 - tweak META.yaml a bit, unfortunately, there is no documented way
195 to have optional dependencies with CPAN. doh :(
196 - avoid running some tests on windows because they would fail due to
197 perl bug (broken fork, broken pipes...).
198 - work around perl on windows bugs where perl returns undocumented
199 error codes for sysread, syswrite etc. by taking advantage
200 of AnyEvent's workaround for that problem.
201 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
202 a common perl implementation bug on windows.
203 - use unix domain sockets in testsuite to work around
204 common perl implementation bugs on widows (they are emulated by
205 tcp sockets on windows. ugh.)
206
2074.71 Sat May 24 20:01:27 CEST 2008
208 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
209 - take advantage of async name resolution of AnyEvent::Util.
210 - work around brutal inet_aton override in Coro::LWP.
211 - take advantage of the readyhook in Coro::EV, for smoother
212 scheduling.
213
2144.7 Sun May 11 00:32:19 CEST 2008
215 - completely reworked the Coro manpage.
216 - added Coro::AnyEvent, generic event loop integration.
217 - implement cancel, ready and kill commands in Coro::Debug.
218 - document find_coro in Coro::Debug.
219 - incompatible change: rename has_stack to has_cctx.
220 - Coro::AIO and Coro::BDB no longer force event model detection,
221 use AnyEvent::AIO and AnyEvent::BDB.
222
2234.6 Sat Apr 26 10:05:14 CEST 2008
224 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
225 by the Coro module. It was a mistake to have it in the first place.
226 - (experimental) support for activestate perl 5.10 (method "w").
227 - (experimental) support for strawberry perl (method "a").
228 - coro_sigelem_set did not return a value although it had to,
229 actual impact unknown.
230
2314.51 Mon Apr 14 13:28:27 CEST 2008
232 - make it compile again on 5.8.
233
2344.50 Thu Apr 10 09:43:17 CEST 2008
235 - I did it twice! (see 4.49).
236
2374.49 Sun Apr 6 21:23:31 CEST 2008
238 - grr, instead of compiling the recent changes on 5.10 only they
239 were compiled on 5.8 only.
240
2414.48 Sun Apr 6 20:36:46 CEST 2008
242 - allow coroutine switches during eval's under 5.10.x, as it seems
243 the parser is a per-interpreter option now, so this is safe
244 (this might fix the odd crashing bug).
245 - drop support for 5.9.x versions: they are dead, jim.
246
2474.47 Sun Apr 6 00:37:52 CEST 2008
248 - force cctx allocation on API calls: we know we need to force one
249 and gcc actually manages to confuse our heuristic nowadays,
250 leading to crashes and worse.
251 - document force_cctx.
252
2534.46 Fri Apr 4 22:05:43 CEST 2008
254 - upgrade libcoro, resulting in pthread-backend (which was only created
255 to fulfill the rules of the programming languages shootout).
256
2574.45 Thu Mar 13 11:55:36 CET 2008
258 - fix a file leaking bug in eg/mhyttpd that would allow
259 downloading of any file (reported by oesi).
260 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
261 (also add testcase).
262 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
263 apparently having loads of fun with that).
264 - implement $state->swap_defsv, ->swap_defav and document ->throw.
265
2664.4 Wed Feb 13 16:44:29 CET 2008
267 - only assume .cfi pseudo isns exist on GNU/Linux.
268 - add get_timed method to Coro::Channels.
269 - fixed Coro::Debug manpage.
270 - perl 5.11 compatbility improvement based on patch by
271 Andreas König.
272
2734.37 Sun Jan 20 11:25:23 CET 2008
274 - soften the check for an active parser for perl 5.10 (avoiding
275 "Coro::State::transfer called while parsing" in many cases).
276
2774.36 Sun Jan 13 10:53:56 CET 2008
278 - reset diehook when terminating from an async_pool as to not
279 trigger any __DIE__ handlers.
280
2814.35 Sun Jan 13 04:14:13 CET 2008
282 - "bt" debug command now displays any exceptions
283 from longmess and also skips the innermost
284 stackframes, giving more useufl output.
285 - allow backtraces in coroutines blocked in Coro::EV,
286 at a <1% speed hit.
287 - handle localising of $SIG{__WARN__} and __DIE__
288 properly (with a proper amount of dirty hacking).
289
2904.34 Sat Dec 22 17:49:53 CET 2007
291 - upgrade to EV version 2.0 API.
292
2934.33 Mon Dec 17 08:36:12 CET 2007
294 - make Coro::AIO etc. loadable in the absence of EV.
295
2964.32 Mon Dec 17 07:46:02 CET 2007
297 - majorly improved Coro::Handle's performance with Coro::EV.
298 - implemented the until now mythical Coro::BDB module.
299 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
300
3014.31 Wed Dec 5 12:32:39 CET 2007
302 - remove warn statement form Coro::Util.
303
3044.3 Tue Dec 4 20:33:14 CET 2007
305 - calls to the idle function could cause stack corruption
306 when the stack changed.
307 - do no longer rely on the presence of EV::DNS if EV is used
308 (because it is gone), but instead take avdantage of EV::ADNS
309 if available.
310 - add ($) prototypes to all functions in Coro::Storable.
311 - use a conventional (safer) idle callback in Coro::EV.
312 - do accept quickly in Coro::Debug to avoid endless loops.
313
3144.22 Fri Nov 30 16:04:04 CET 2007
315 - really use optimised versions for Event and EV in Coro::Util
316 and Coro::Handle.
317
3184.21 Sun Nov 25 10:48:59 CET 2007
319 - fix a spurious memory read.
320 - Coro::EV no longer keeps the eventloop "alive".
321
3224.2 Fri Nov 9 20:47:05 CET 2007
323 - enable/disable tracing from a new coroutine, not a pooled one.
324 - fix a memleak in Coro::Event.
325 - removed killall call from fork_eval.
326 - made sure store_fd is already loaded so that fork_eval
327 does not have to parse autoload in each subprocess.
328 - only use assembly method if -O switch is in $Config{optimize}.
329 - add (optional) Coro::EV module, so far the best event loop module
330 directly supported by Coro.
331 - if the event model is EV, use EV::DNS to resolve
332 stuff in Coro::Util.
333 - don't get confused by multiple event notifications in Coro::Handle.
334 - initial support for EV (libevent interface).
335 - require Event and EV using configure_requires, to force their existance.
336
3374.13 Wed Oct 24 07:26:45 CEST 2007
338 - add Coro::Storable::blocking_thaw.
339 - use a vastly more complicated technique to localise
340 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
341 - use a coroutine for the idle callback Coro::Event,
342 instead of running Event in the current coroutine context.
343 This also catches recursive invocations.
344 - actually report fork errors in gethostbyname and inet_aton.
345
3464.11 Thu Oct 11 02:40:24 CEST 2007
347 - port to threaded perls.
348
3494.1 Thu Oct 11 02:38:16 CEST 2007
350 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
351 be local to each coro (see Coro::State).
352 - incompatible change: for very deep reasons, cede and cede_notself
353 cannot return anything, so nothing will be returned.
354 - possibly bring back 5.10 compatibility (untested).
355 - work around stupid (and wrong) warning on 5.10 :(.
356 - overlay the saved state over the context stack. This saves
357 a few hundred bytes per coroutine on average and also
358 speeds up context switching a bit.
359 - further tune default stack sizes.
360 - (more) correctly calculate stack usage in coro_rss.
361 - Coro::Storable::blocking_* did not properly lock
362 resulting in races between coroutines.
363 - added Coro::Storable::guard.
364 - stopping to trace a coroutine could destroy the cctx of
365 an unrelated coroutine.
366 - explain the relationship between Perl and C coroutines in
367 more detail in Coro::State.
368 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
369 causing a fork per resolve. This also affected Coro::Socket.
370 - switch to a separate stack in $coro->call/eval to avoid
371 invalidating pointers.
372
3734.03 Sat Oct 6 21:24:00 CEST 2007
374 - added Coro::throw method.
375 - minor code cleanups.
376
3774.02 Sat Oct 6 02:36:47 CEST 2007
378 - fix a very minor per-coroutine memleak (a single codereference).
379 - fixed a bug where the currently in-use c context would be freed
380 prematurely (can happen only when programs change the stacksize
381 or use tracing).
382 - tracing can no longer keep a coro alive after it terminated.
383 - do static branch prediction in the common path for gcc. gives
384 about 2-5% speed improvement here.
385
84.01 Fri Oct 5 22:10:49 CEST 2007 3864.01 Fri Oct 5 22:10:49 CEST 2007
9 - use a different, less descriptive but hopefully more robust way 387 - instead of recreating *a* standard output handle we simply
10 to create the stdout glob for a newly created coroutine. 388 use STDOUT, which is faster and hopefully more robust.
11 389
124.0 Fri Oct 5 12:56:00 CEST 2007 3904.0 Fri Oct 5 12:56:00 CEST 2007
13 - incompatibly changed Coro::Storable::freeze. 391 - incompatibly changed Coro::Storable::freeze.
14 - major new feature: added Coro::Debug, for interactive coroutine 392 - major new feature: added Coro::Debug, for interactive coroutine
15 debugging, tracing and much more. 393 debugging, tracing and much more.

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