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Comparing Coro/Changes (file contents):
Revision 1.216 by root, Sun Mar 25 00:24:47 2007 UTC vs.
Revision 1.418 by root, Sun Nov 16 00:55:41 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(?) 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)).
7
85.0
9 - NEW ARCHITECTURE: use 4.912 for the stable version.
10 - bump API version to 7 - all dependents must be recompiled.
11 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
12 - async_pool did free a scalar value twice
13 ("Attempt to unreference...").
14 - perl's process emulation is now not even theoretically supported
15 anymore.
16 - directly patch the entersub opcode calling SLF functions (cede,
17 transfer and so on). this does speed up context switching, but
18 more importanly, it frees us from the hardcoded behaviour of
19 entersub, so we might actually be able to return something from
20 those functions and atcually create new ones.
21 - take advantage of __builtin_frame_address on gcc.
22 - expose THX in coroapi (not sure whether this was a wise decision,
23 as "threaded" perls are running at half speed anyways).
24 - implement execute_slf (schedule-like-function) interface that makes
25 it possible to implement schedule-like-functions in XS.
26 - use new SLF interface to massively speed up Coro::EV by roughly a factor
27 of two.
28 - removed timed_down and timed_guard functions - they were not being used
29 anyways and should be replaced by a more generic mechanism - and were
30 annoying to support anyways :
31 - used new SLF interface to massively speed up Coro::Semaphore by a factor
32 of three.
33 - forgot to include Coro/libcoro/README in the dist for all these years.
34 - work around a freebsd pthreads bug (manual testcancel is required as
35 pthread_cond_wait isn't a cancellation point on freebsd).
36
374.913 Sat Nov 15 07:58:28 CET 2008
38 - async_pool did free a scalar value twice
39 ("Attempt to unreference...").
40
414.912 Thu Nov 13 18:31:23 CET 2008
42 - minor cleanups.
43 - use much larger stacks on linux and perl < 5.8.8.
44 - Coro::Debug::new_unix_server did not unlink the socket
45 when destroyed.
46
474.911 Tue Nov 11 04:26:17 CET 2008
48 - "port" to threaded perls.
49
504.91 Mon Nov 10 05:36:38 CET 2008
51 - the ->throw exception object no longer leaks.
52 - creating a new cctx leaked a scopestack entry (memleak).
53 - new coroutines didn't get created with a zero flags field
54 (unknown impact).
55 - calling ->throw on a not-yet-started coroutine should now work
56 instead of being ignored.
57 - ->throw is now supported on Coro::State objects.
58 - clean up cctx creation code a bit.
59 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
60
614.9 Sat Nov 8 17:45:27 CET 2008
62 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
63 - (libcoro) no longer leak threads in the experimental pthread backend,
64 also speed it up considerably.
65 - (libcoro) do not rely on makecontext passing void *'s unscathed.
66 - fix compiletime dependencies on libcoro in the Makefile.
67 - cctx_count wasn't always updated properly.
68 - Coro::State::cctx_stacksize wasn't applied correctly.
69 - new function Coro::State::cctx_max_idle.
70 - the default max number of idle C contexts is now 4.
71 - (libcoro) try harder to get _setjmp/_longjmp.
72 - (libcoro) cleanup and extend the libcoro API to officially
73 allow the creation of empty source contexts.
74 - very experimental workaround for the totally broken netbsd platform.
75 - tried to hack around openbsd bugs.
76
774.804 Wed Nov 5 16:36:00 CET 2008
78 - Coro::Debug::new_unix_server would not create a non-blocking listening
79 socket, sometimes causing freezes.
80 - (libcoro) fix misaligned stack points for setjmp and assembly
81 methods, which can cause crashes on x86/x86_64 with a sufficiently
82 aggressive compiler.
83 - new function: Coro::Debug::new_tcp_server.
84 - move ->throw into the Coro class because it only works on coro objects.
85
864.803 Mon Nov 3 17:16:12 CET 2008
87 - (libcoro) use a global asm statement to become independent of gcc
88 otpimisations for CORO_ASM (thanks to pippijn for the idea).
89 - try to workaround yet another broken bsd, this time dragonfly.
90
914.802 Thu Oct 30 10:56:12 CET 2008
92 - support -fno-omit-frame-pointer on x86 with the assembly method.
93 - tune 01_unblock.t tests a bit.
94
954.801 Wed Oct 22 18:33:37 CEST 2008
96 - improve readline speed for very long "lines".
97 - backport to 5.8.8.
98
994.8 Thu Oct 2 13:34:40 CEST 2008
100 - new function Coro::AIO::aio_wait.
101 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
102 - greatly speed up and reduce memory usage of Coro::AIO requests.
103 - implement some other µ-optimisations.
104
1054.749 Mon Sep 29 14:40:12 CEST 2008
106 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
107
1084.748 Sat Sep 27 14:03:19 CEST 2008
109 - implement, but do not document, PerlIO::cede(granularity).
110 - Coro::Storable forgot to wrap Storable::pstore.
111 - work around the multitude of leaks and memory corruption
112 bugs in PerlIO::via by using our own C-level perliol. As a side
113 effect, Coro::Storable is now much, much, much faster.
114
1154.747 Tue Sep 23 01:59:41 CEST 2008
116 - fix a per-cv memleak (one empty array was leaked per
117 code reference).
118 - avoid a crash in coro->call|rss when the coroutine was already
119 destroyed (most noticably when using Coro::Debug::ps :)
120 - also protect *Storable::FILE.
121 - push up default storable granularity to 20ms.
122
1234.746 Sun Sep 21 03:22:20 CEST 2008
124 - be more insistent on locking Storable against reentrancy
125 in Coro::Storable.
126 - move swap_def?v and throw to Coro::State, as documented.
127
1284.745 Thu Jul 24 00:14:38 CEST 2008
129 - remove debugging code related to MgPV_nolen_const, also try to
130 make it compile with perl 5.8.6 (yes, apple apparently loves
131 outdated software). Reported by John S.
132
1334.744 Tue Jul 8 22:06:35 CEST 2008
134 - correctly provide default DIE/WARN handlers as documented.
135 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
136 implementations inside perl work fine for us.
137
1384.743 Mon Jun 16 00:21:57 CEST 2008
139 - when using Coro::EV without running EV::loop it could
140 result in busy-waiting for events, this has been fixed.
141 - reduce codesize and improve performance by using EV_DEFAULT_UC.
142
1434.742 Sat May 31 14:10:21 CEST 2008
144 - implement a workaround for (some) perl <5.8.8 versions.
145 - require EV 3.3+.
146
1474.741 Fri May 30 23:33:09 CEST 2008
148 - tell netbsd how utterly broken their imitation of an OS is
149 and refuse to build by default if pthreads are in use.
150 - switch to "s" method on all bsd's by default, as their ucontext
151 stuff seems just too broken.
152 - fix a bug in Coro::Select.
153
1544.74 Thu May 29 20:05:31 CEST 2008
155 - do not test Coro::LWP for lack of dependencies.
156 - do not test Coro::Select for lack of working perls.
157
1584.73 Thu May 29 2008
159 - fix a bug in Coro::EV which would cause it to block despite
160 there being runnable coroutines.
161 - sprinkle "no warnings" freely over everything, also suppress
162 warnings for some other modules.
163 - fix typo in WSAEWOULDBLOCK.
164
1654.72 Sun May 25 05:14:36 CEST 2008
166 - tweak META.yaml a bit, unfortunately, there is no documented way
167 to have optional dependencies with CPAN. doh :(
168 - avoid running some tests on windows because they would fail due to
169 perl bug (broken fork, broken pipes...).
170 - work around perl on windows bugs where perl returns undocumented
171 error codes for sysread, syswrite etc. by taking advantage
172 of AnyEvent's workaround for that problem.
173 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
174 a common perl implementation bug on windows.
175 - use unix domain sockets in testsuite to work around
176 common perl implementation bugs on widows (they are emulated by
177 tcp sockets on windows. ugh.)
178
1794.71 Sat May 24 20:01:27 CEST 2008
180 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
181 - take advantage of async name resolution of AnyEvent::Util.
182 - work around brutal inet_aton override in Coro::LWP.
183 - take advantage of the readyhook in Coro::EV, for smoother
184 scheduling.
185
1864.7 Sun May 11 00:32:19 CEST 2008
187 - completely reworked the Coro manpage.
188 - added Coro::AnyEvent, generic event loop integration.
189 - implement cancel, ready and kill commands in Coro::Debug.
190 - document find_coro in Coro::Debug.
191 - incompatible change: rename has_stack to has_cctx.
192 - Coro::AIO and Coro::BDB no longer force event model detection,
193 use AnyEvent::AIO and AnyEvent::BDB.
194
1954.6 Sat Apr 26 10:05:14 CEST 2008
196 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
197 by the Coro module. It was a mistake to have it in the first place.
198 - (experimental) support for activestate perl 5.10 (method "w").
199 - (experimental) support for strawberry perl (method "a").
200 - coro_sigelem_set did not return a value although it had to,
201 actual impact unknown.
202
2034.51 Mon Apr 14 13:28:27 CEST 2008
204 - make it compile again on 5.8.
205
2064.50 Thu Apr 10 09:43:17 CEST 2008
207 - I did it twice! (see 4.49).
208
2094.49 Sun Apr 6 21:23:31 CEST 2008
210 - grr, instead of compiling the recent changes on 5.10 only they
211 were compiled on 5.8 only.
212
2134.48 Sun Apr 6 20:36:46 CEST 2008
214 - allow coroutine switches during eval's under 5.10.x, as it seems
215 the parser is a per-interpreter option now, so this is safe
216 (this might fix the odd crashing bug).
217 - drop support for 5.9.x versions: they are dead, jim.
218
2194.47 Sun Apr 6 00:37:52 CEST 2008
220 - force cctx allocation on API calls: we know we need to force one
221 and gcc actually manages to confuse our heuristic nowadays,
222 leading to crashes and worse.
223 - document force_cctx.
224
2254.46 Fri Apr 4 22:05:43 CEST 2008
226 - upgrade libcoro, resulting in pthread-backend (which was only created
227 to fulfill the rules of the programming languages shootout).
228
2294.45 Thu Mar 13 11:55:36 CET 2008
230 - fix a file leaking bug in eg/mhyttpd that would allow
231 downloading of any file (reported by oesi).
232 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
233 (also add testcase).
234 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
235 apparently having loads of fun with that).
236 - implement $state->swap_defsv, ->swap_defav and document ->throw.
237
2384.4 Wed Feb 13 16:44:29 CET 2008
239 - only assume .cfi pseudo isns exist on GNU/Linux.
240 - add get_timed method to Coro::Channels.
241 - fixed Coro::Debug manpage.
242 - perl 5.11 compatbility improvement based on patch by
243 Andreas König.
244
2454.37 Sun Jan 20 11:25:23 CET 2008
246 - soften the check for an active parser for perl 5.10 (avoiding
247 "Coro::State::transfer called while parsing" in many cases).
248
2494.36 Sun Jan 13 10:53:56 CET 2008
250 - reset diehook when terminating from an async_pool as to not
251 trigger any __DIE__ handlers.
252
2534.35 Sun Jan 13 04:14:13 CET 2008
254 - "bt" debug command now displays any exceptions
255 from longmess and also skips the innermost
256 stackframes, giving more useufl output.
257 - allow backtraces in coroutines blocked in Coro::EV,
258 at a <1% speed hit.
259 - handle localising of $SIG{__WARN__} and __DIE__
260 properly (with a proper amount of dirty hacking).
261
2624.34 Sat Dec 22 17:49:53 CET 2007
263 - upgrade to EV version 2.0 API.
264
2654.33 Mon Dec 17 08:36:12 CET 2007
266 - make Coro::AIO etc. loadable in the absence of EV.
267
2684.32 Mon Dec 17 07:46:02 CET 2007
269 - majorly improved Coro::Handle's performance with Coro::EV.
270 - implemented the until now mythical Coro::BDB module.
271 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
272
2734.31 Wed Dec 5 12:32:39 CET 2007
274 - remove warn statement form Coro::Util.
275
2764.3 Tue Dec 4 20:33:14 CET 2007
277 - calls to the idle function could cause stack corruption
278 when the stack changed.
279 - do no longer rely on the presence of EV::DNS if EV is used
280 (because it is gone), but instead take avdantage of EV::ADNS
281 if available.
282 - add ($) prototypes to all functions in Coro::Storable.
283 - use a conventional (safer) idle callback in Coro::EV.
284 - do accept quickly in Coro::Debug to avoid endless loops.
285
2864.22 Fri Nov 30 16:04:04 CET 2007
287 - really use optimised versions for Event and EV in Coro::Util
288 and Coro::Handle.
289
2904.21 Sun Nov 25 10:48:59 CET 2007
291 - fix a spurious memory read.
292 - Coro::EV no longer keeps the eventloop "alive".
293
2944.2 Fri Nov 9 20:47:05 CET 2007
295 - enable/disable tracing from a new coroutine, not a pooled one.
296 - fix a memleak in Coro::Event.
297 - removed killall call from fork_eval.
298 - made sure store_fd is already loaded so that fork_eval
299 does not have to parse autoload in each subprocess.
300 - only use assembly method if -O switch is in $Config{optimize}.
301 - add (optional) Coro::EV module, so far the best event loop module
302 directly supported by Coro.
303 - if the event model is EV, use EV::DNS to resolve
304 stuff in Coro::Util.
305 - don't get confused by multiple event notifications in Coro::Handle.
306 - initial support for EV (libevent interface).
307 - require Event and EV using configure_requires, to force their existance.
308
3094.13 Wed Oct 24 07:26:45 CEST 2007
310 - add Coro::Storable::blocking_thaw.
311 - use a vastly more complicated technique to localise
312 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
313 - use a coroutine for the idle callback Coro::Event,
314 instead of running Event in the current coroutine context.
315 This also catches recursive invocations.
316 - actually report fork errors in gethostbyname and inet_aton.
317
3184.11 Thu Oct 11 02:40:24 CEST 2007
319 - port to threaded perls.
320
3214.1 Thu Oct 11 02:38:16 CEST 2007
322 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
323 be local to each coro (see Coro::State).
324 - incompatible change: for very deep reasons, cede and cede_notself
325 cannot return anything, so nothing will be returned.
326 - possibly bring back 5.10 compatibility (untested).
327 - work around stupid (and wrong) warning on 5.10 :(.
328 - overlay the saved state over the context stack. This saves
329 a few hundred bytes per coroutine on average and also
330 speeds up context switching a bit.
331 - further tune default stack sizes.
332 - (more) correctly calculate stack usage in coro_rss.
333 - Coro::Storable::blocking_* did not properly lock
334 resulting in races between coroutines.
335 - added Coro::Storable::guard.
336 - stopping to trace a coroutine could destroy the cctx of
337 an unrelated coroutine.
338 - explain the relationship between Perl and C coroutines in
339 more detail in Coro::State.
340 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
341 causing a fork per resolve. This also affected Coro::Socket.
342 - switch to a separate stack in $coro->call/eval to avoid
343 invalidating pointers.
344
3454.03 Sat Oct 6 21:24:00 CEST 2007
346 - added Coro::throw method.
347 - minor code cleanups.
348
3494.02 Sat Oct 6 02:36:47 CEST 2007
350 - fix a very minor per-coroutine memleak (a single codereference).
351 - fixed a bug where the currently in-use c context would be freed
352 prematurely (can happen only when programs change the stacksize
353 or use tracing).
354 - tracing can no longer keep a coro alive after it terminated.
355 - do static branch prediction in the common path for gcc. gives
356 about 2-5% speed improvement here.
357
3584.01 Fri Oct 5 22:10:49 CEST 2007
359 - instead of recreating *a* standard output handle we simply
360 use STDOUT, which is faster and hopefully more robust.
361
3624.0 Fri Oct 5 12:56:00 CEST 2007
363 - incompatibly changed Coro::Storable::freeze.
364 - major new feature: added Coro::Debug, for interactive coroutine
365 debugging, tracing and much more.
366 - major bug fix: unbelievable, but true: $_, $/ and many other
367 "saved" variables actually weren't being saved. This has been fixed,
368 of course, while increasing performance while losing all the save
369 flags.
370 - save flags are gone, and all the api functions dealing with them.
371 - added Coro::Semaphore::adjust.
372 - added Coro::Util::fork_eval.
373 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
374 - added Coro::killall.
375 - reduce initial stack sizes to allow for "micro-coroutines".
376 - better async_pool resource management, moved parts of async_pool
377 handling to XS (major speed improvement).
378 - actually croak before modifying important data structures.
379 - refuse to transfer while compiling.
380 - possibly support eval EXPR better now.
381 - enable assembly per default on linux+bsd x86+amd64.
382 - all internal members were renamed _something for easier subclassing.
383 - many minor tweaks.
384
3853.63 Wed May 16 14:10:06 CEST 2007
386 - implement handcoded assembly for x86/amd64 SVR ABI.
387
3883.62 Fri Apr 27 21:36:06 CEST 2007
389 - upgrade libcoro (which might set unwind info correctly).
390 - change default on linux to setjmp/longjmp.
391
3923.61 Thu Apr 19 12:36:18 CEST 2007
393 - Coro::Storable caused an endless loop when thawing invalid
394 pst's sometimes.
395 - use a Semaphore in Coro::Storable, as Storable doesn't
396 seem to be reentrant (although it is documented to
397 be threadsafe...).
398 - fix Coro::Signal to bring back the original unreliable
399 but stateful semantics.
400 - fixed a lot of typos in Coro.pm (patch submitted by David
401 Steinbrunner, which applied flawlessly).
402
4033.6 Sat Apr 14 17:13:31 CEST 2007
404 - added some bugfixes to get eg/myhttpd working again.
405 - added Coro::Storable for often-cede'ing freeze/thaw.
406 - try to do a clean exit when a coroutine calls exit
407 (EXPERIMENTAL).
408 - got rid of indirect call through _coro_init.
409 - updated the partly antique examples in eg/ to
410 work again and be a bit less magic, too.
411 - fixed Coro::Signal semantics to work as documented again.
5 412
63.55 Sun Mar 25 01:20:47 CET 2007 4133.55 Sun Mar 25 01:20:47 CET 2007
7 - add SAVE_DEFFH to save the default filehandle and enable 414 - add SAVE_DEFFH to save the default filehandle and enable
8 it by default. 415 it by default.
9 - finally move socket-operations from Coro::Socket to Coro::Handle 416 - finally move socket-operations from Coro::Socket to Coro::Handle

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