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Comparing Coro/Changes (file contents):
Revision 1.251 by root, Wed Oct 3 01:48:05 2007 UTC vs.
Revision 1.438 by root, Wed Nov 19 05:58:48 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
84.0 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 - (libcoro) lots of minor cleanups and portability improvements.
63
644.913 Sat Nov 15 07:58:28 CET 2008
65 - async_pool did free a scalar value twice
66 ("Attempt to unreference...").
67
684.912 Thu Nov 13 18:31:23 CET 2008
69 - minor cleanups.
70 - use much larger stacks on linux and perl < 5.8.8.
71 - Coro::Debug::new_unix_server did not unlink the socket
72 when destroyed.
73
744.911 Tue Nov 11 04:26:17 CET 2008
75 - "port" to threaded perls.
76
774.91 Mon Nov 10 05:36:38 CET 2008
78 - the ->throw exception object no longer leaks.
79 - creating a new cctx leaked a scopestack entry (memleak).
80 - new coroutines didn't get created with a zero flags field
81 (unknown impact).
82 - calling ->throw on a not-yet-started coroutine should now work
83 instead of being ignored.
84 - ->throw is now supported on Coro::State objects.
85 - clean up cctx creation code a bit.
86 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
87
884.9 Sat Nov 8 17:45:27 CET 2008
89 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
90 - (libcoro) no longer leak threads in the experimental pthread backend,
91 also speed it up considerably.
92 - (libcoro) do not rely on makecontext passing void *'s unscathed.
93 - fix compiletime dependencies on libcoro in the Makefile.
94 - cctx_count wasn't always updated properly.
95 - Coro::State::cctx_stacksize wasn't applied correctly.
96 - new function Coro::State::cctx_max_idle.
97 - the default max number of idle C contexts is now 4.
98 - (libcoro) try harder to get _setjmp/_longjmp.
99 - (libcoro) cleanup and extend the libcoro API to officially
100 allow the creation of empty source contexts.
101 - very experimental workaround for the totally broken netbsd platform.
102 - tried to hack around openbsd bugs.
103
1044.804 Wed Nov 5 16:36:00 CET 2008
105 - Coro::Debug::new_unix_server would not create a non-blocking listening
106 socket, sometimes causing freezes.
107 - (libcoro) fix misaligned stack points for setjmp and assembly
108 methods, which can cause crashes on x86/x86_64 with a sufficiently
109 aggressive compiler.
110 - new function: Coro::Debug::new_tcp_server.
111 - move ->throw into the Coro class because it only works on coro objects.
112
1134.803 Mon Nov 3 17:16:12 CET 2008
114 - (libcoro) use a global asm statement to become independent of gcc
115 otpimisations for CORO_ASM (thanks to pippijn for the idea).
116 - try to workaround yet another broken bsd, this time dragonfly.
117
1184.802 Thu Oct 30 10:56:12 CET 2008
119 - support -fno-omit-frame-pointer on x86 with the assembly method.
120 - tune 01_unblock.t tests a bit.
121
1224.801 Wed Oct 22 18:33:37 CEST 2008
123 - improve readline speed for very long "lines".
124 - backport to 5.8.8.
125
1264.8 Thu Oct 2 13:34:40 CEST 2008
127 - new function Coro::AIO::aio_wait.
128 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
129 - greatly speed up and reduce memory usage of Coro::AIO requests.
130 - implement some other µ-optimisations.
131
1324.749 Mon Sep 29 14:40:12 CEST 2008
133 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
134
1354.748 Sat Sep 27 14:03:19 CEST 2008
136 - implement, but do not document, PerlIO::cede(granularity).
137 - Coro::Storable forgot to wrap Storable::pstore.
138 - work around the multitude of leaks and memory corruption
139 bugs in PerlIO::via by using our own C-level perliol. As a side
140 effect, Coro::Storable is now much, much, much faster.
141
1424.747 Tue Sep 23 01:59:41 CEST 2008
143 - fix a per-cv memleak (one empty array was leaked per
144 code reference).
145 - avoid a crash in coro->call|rss when the coroutine was already
146 destroyed (most noticably when using Coro::Debug::ps :)
147 - also protect *Storable::FILE.
148 - push up default storable granularity to 20ms.
149
1504.746 Sun Sep 21 03:22:20 CEST 2008
151 - be more insistent on locking Storable against reentrancy
152 in Coro::Storable.
153 - move swap_def?v and throw to Coro::State, as documented.
154
1554.745 Thu Jul 24 00:14:38 CEST 2008
156 - remove debugging code related to MgPV_nolen_const, also try to
157 make it compile with perl 5.8.6 (yes, apple apparently loves
158 outdated software). Reported by John S.
159
1604.744 Tue Jul 8 22:06:35 CEST 2008
161 - correctly provide default DIE/WARN handlers as documented.
162 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
163 implementations inside perl work fine for us.
164
1654.743 Mon Jun 16 00:21:57 CEST 2008
166 - when using Coro::EV without running EV::loop it could
167 result in busy-waiting for events, this has been fixed.
168 - reduce codesize and improve performance by using EV_DEFAULT_UC.
169
1704.742 Sat May 31 14:10:21 CEST 2008
171 - implement a workaround for (some) perl <5.8.8 versions.
172 - require EV 3.3+.
173
1744.741 Fri May 30 23:33:09 CEST 2008
175 - tell netbsd how utterly broken their imitation of an OS is
176 and refuse to build by default if pthreads are in use.
177 - switch to "s" method on all bsd's by default, as their ucontext
178 stuff seems just too broken.
179 - fix a bug in Coro::Select.
180
1814.74 Thu May 29 20:05:31 CEST 2008
182 - do not test Coro::LWP for lack of dependencies.
183 - do not test Coro::Select for lack of working perls.
184
1854.73 Thu May 29 2008
186 - fix a bug in Coro::EV which would cause it to block despite
187 there being runnable coroutines.
188 - sprinkle "no warnings" freely over everything, also suppress
189 warnings for some other modules.
190 - fix typo in WSAEWOULDBLOCK.
191
1924.72 Sun May 25 05:14:36 CEST 2008
193 - tweak META.yaml a bit, unfortunately, there is no documented way
194 to have optional dependencies with CPAN. doh :(
195 - avoid running some tests on windows because they would fail due to
196 perl bug (broken fork, broken pipes...).
197 - work around perl on windows bugs where perl returns undocumented
198 error codes for sysread, syswrite etc. by taking advantage
199 of AnyEvent's workaround for that problem.
200 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
201 a common perl implementation bug on windows.
202 - use unix domain sockets in testsuite to work around
203 common perl implementation bugs on widows (they are emulated by
204 tcp sockets on windows. ugh.)
205
2064.71 Sat May 24 20:01:27 CEST 2008
207 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
208 - take advantage of async name resolution of AnyEvent::Util.
209 - work around brutal inet_aton override in Coro::LWP.
210 - take advantage of the readyhook in Coro::EV, for smoother
211 scheduling.
212
2134.7 Sun May 11 00:32:19 CEST 2008
214 - completely reworked the Coro manpage.
215 - added Coro::AnyEvent, generic event loop integration.
216 - implement cancel, ready and kill commands in Coro::Debug.
217 - document find_coro in Coro::Debug.
218 - incompatible change: rename has_stack to has_cctx.
219 - Coro::AIO and Coro::BDB no longer force event model detection,
220 use AnyEvent::AIO and AnyEvent::BDB.
221
2224.6 Sat Apr 26 10:05:14 CEST 2008
223 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
224 by the Coro module. It was a mistake to have it in the first place.
225 - (experimental) support for activestate perl 5.10 (method "w").
226 - (experimental) support for strawberry perl (method "a").
227 - coro_sigelem_set did not return a value although it had to,
228 actual impact unknown.
229
2304.51 Mon Apr 14 13:28:27 CEST 2008
231 - make it compile again on 5.8.
232
2334.50 Thu Apr 10 09:43:17 CEST 2008
234 - I did it twice! (see 4.49).
235
2364.49 Sun Apr 6 21:23:31 CEST 2008
237 - grr, instead of compiling the recent changes on 5.10 only they
238 were compiled on 5.8 only.
239
2404.48 Sun Apr 6 20:36:46 CEST 2008
241 - allow coroutine switches during eval's under 5.10.x, as it seems
242 the parser is a per-interpreter option now, so this is safe
243 (this might fix the odd crashing bug).
244 - drop support for 5.9.x versions: they are dead, jim.
245
2464.47 Sun Apr 6 00:37:52 CEST 2008
247 - force cctx allocation on API calls: we know we need to force one
248 and gcc actually manages to confuse our heuristic nowadays,
249 leading to crashes and worse.
250 - document force_cctx.
251
2524.46 Fri Apr 4 22:05:43 CEST 2008
253 - upgrade libcoro, resulting in pthread-backend (which was only created
254 to fulfill the rules of the programming languages shootout).
255
2564.45 Thu Mar 13 11:55:36 CET 2008
257 - fix a file leaking bug in eg/mhyttpd that would allow
258 downloading of any file (reported by oesi).
259 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
260 (also add testcase).
261 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
262 apparently having loads of fun with that).
263 - implement $state->swap_defsv, ->swap_defav and document ->throw.
264
2654.4 Wed Feb 13 16:44:29 CET 2008
266 - only assume .cfi pseudo isns exist on GNU/Linux.
267 - add get_timed method to Coro::Channels.
268 - fixed Coro::Debug manpage.
269 - perl 5.11 compatbility improvement based on patch by
270 Andreas König.
271
2724.37 Sun Jan 20 11:25:23 CET 2008
273 - soften the check for an active parser for perl 5.10 (avoiding
274 "Coro::State::transfer called while parsing" in many cases).
275
2764.36 Sun Jan 13 10:53:56 CET 2008
277 - reset diehook when terminating from an async_pool as to not
278 trigger any __DIE__ handlers.
279
2804.35 Sun Jan 13 04:14:13 CET 2008
281 - "bt" debug command now displays any exceptions
282 from longmess and also skips the innermost
283 stackframes, giving more useufl output.
284 - allow backtraces in coroutines blocked in Coro::EV,
285 at a <1% speed hit.
286 - handle localising of $SIG{__WARN__} and __DIE__
287 properly (with a proper amount of dirty hacking).
288
2894.34 Sat Dec 22 17:49:53 CET 2007
290 - upgrade to EV version 2.0 API.
291
2924.33 Mon Dec 17 08:36:12 CET 2007
293 - make Coro::AIO etc. loadable in the absence of EV.
294
2954.32 Mon Dec 17 07:46:02 CET 2007
296 - majorly improved Coro::Handle's performance with Coro::EV.
297 - implemented the until now mythical Coro::BDB module.
298 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
299
3004.31 Wed Dec 5 12:32:39 CET 2007
301 - remove warn statement form Coro::Util.
302
3034.3 Tue Dec 4 20:33:14 CET 2007
304 - calls to the idle function could cause stack corruption
305 when the stack changed.
306 - do no longer rely on the presence of EV::DNS if EV is used
307 (because it is gone), but instead take avdantage of EV::ADNS
308 if available.
309 - add ($) prototypes to all functions in Coro::Storable.
310 - use a conventional (safer) idle callback in Coro::EV.
311 - do accept quickly in Coro::Debug to avoid endless loops.
312
3134.22 Fri Nov 30 16:04:04 CET 2007
314 - really use optimised versions for Event and EV in Coro::Util
315 and Coro::Handle.
316
3174.21 Sun Nov 25 10:48:59 CET 2007
318 - fix a spurious memory read.
319 - Coro::EV no longer keeps the eventloop "alive".
320
3214.2 Fri Nov 9 20:47:05 CET 2007
322 - enable/disable tracing from a new coroutine, not a pooled one.
323 - fix a memleak in Coro::Event.
324 - removed killall call from fork_eval.
325 - made sure store_fd is already loaded so that fork_eval
326 does not have to parse autoload in each subprocess.
327 - only use assembly method if -O switch is in $Config{optimize}.
328 - add (optional) Coro::EV module, so far the best event loop module
329 directly supported by Coro.
330 - if the event model is EV, use EV::DNS to resolve
331 stuff in Coro::Util.
332 - don't get confused by multiple event notifications in Coro::Handle.
333 - initial support for EV (libevent interface).
334 - require Event and EV using configure_requires, to force their existance.
335
3364.13 Wed Oct 24 07:26:45 CEST 2007
337 - add Coro::Storable::blocking_thaw.
338 - use a vastly more complicated technique to localise
339 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
340 - use a coroutine for the idle callback Coro::Event,
341 instead of running Event in the current coroutine context.
342 This also catches recursive invocations.
343 - actually report fork errors in gethostbyname and inet_aton.
344
3454.11 Thu Oct 11 02:40:24 CEST 2007
346 - port to threaded perls.
347
3484.1 Thu Oct 11 02:38:16 CEST 2007
349 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
350 be local to each coro (see Coro::State).
351 - incompatible change: for very deep reasons, cede and cede_notself
352 cannot return anything, so nothing will be returned.
353 - possibly bring back 5.10 compatibility (untested).
354 - work around stupid (and wrong) warning on 5.10 :(.
355 - overlay the saved state over the context stack. This saves
356 a few hundred bytes per coroutine on average and also
357 speeds up context switching a bit.
358 - further tune default stack sizes.
359 - (more) correctly calculate stack usage in coro_rss.
360 - Coro::Storable::blocking_* did not properly lock
361 resulting in races between coroutines.
362 - added Coro::Storable::guard.
363 - stopping to trace a coroutine could destroy the cctx of
364 an unrelated coroutine.
365 - explain the relationship between Perl and C coroutines in
366 more detail in Coro::State.
367 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
368 causing a fork per resolve. This also affected Coro::Socket.
369 - switch to a separate stack in $coro->call/eval to avoid
370 invalidating pointers.
371
3724.03 Sat Oct 6 21:24:00 CEST 2007
373 - added Coro::throw method.
374 - minor code cleanups.
375
3764.02 Sat Oct 6 02:36:47 CEST 2007
377 - fix a very minor per-coroutine memleak (a single codereference).
378 - fixed a bug where the currently in-use c context would be freed
379 prematurely (can happen only when programs change the stacksize
380 or use tracing).
381 - tracing can no longer keep a coro alive after it terminated.
382 - do static branch prediction in the common path for gcc. gives
383 about 2-5% speed improvement here.
384
3854.01 Fri Oct 5 22:10:49 CEST 2007
386 - instead of recreating *a* standard output handle we simply
387 use STDOUT, which is faster and hopefully more robust.
388
3894.0 Fri Oct 5 12:56:00 CEST 2007
9 - incompatibly changed Coro::Storable::freeze. 390 - incompatibly changed Coro::Storable::freeze.
10 - major new feature: added Coro::Debug, for interactive coroutine 391 - major new feature: added Coro::Debug, for interactive coroutine
11 debugging, tracing and much more. 392 debugging, tracing and much more.
12 - unbelievable, but true: $_, $@ and many other "saved" variables 393 - major bug fix: unbelievable, but true: $_, $/ and many other
13 actually weren't being saved. This has been fixed, of course, 394 "saved" variables actually weren't being saved. This has been fixed,
14 while increasing performance while losing all the save flags. 395 of course, while increasing performance while losing all the save
396 flags.
15 - save flags are gone, and all the api functions dealing with them. 397 - save flags are gone, and all the api functions dealing with them.
16 - added Coro::Semaphore::adjust. 398 - added Coro::Semaphore::adjust.
17 - added Coro::Util::fork_eval. 399 - added Coro::Util::fork_eval.
18 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}. 400 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
19 - added Coro::killall. 401 - added Coro::killall.
22 handling to XS (major speed improvement). 404 handling to XS (major speed improvement).
23 - actually croak before modifying important data structures. 405 - actually croak before modifying important data structures.
24 - refuse to transfer while compiling. 406 - refuse to transfer while compiling.
25 - possibly support eval EXPR better now. 407 - possibly support eval EXPR better now.
26 - enable assembly per default on linux+bsd x86+amd64. 408 - enable assembly per default on linux+bsd x86+amd64.
27 - all internal members are named _something for easier subclassing. 409 - all internal members were renamed _something for easier subclassing.
28 - many minor tweaks. 410 - many minor tweaks.
29 411
303.63 Wed May 16 14:10:06 CEST 2007 4123.63 Wed May 16 14:10:06 CEST 2007
31 - implement handcoded assembly for x86/amd64 SVR ABI. 413 - implement handcoded assembly for x86/amd64 SVR ABI.
32 414

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