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Comparing Coro/Changes (file contents):
Revision 1.258 by root, Fri Oct 5 21:51:40 2007 UTC vs.
Revision 1.461 by root, Mon Nov 24 04:56:38 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
84.02 8 TODO: Coro/Intro
9 - wrote a small introduction - Coro::Intro.
10 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
11 - Coro::Select did errornously dup the file descriptors
12 and didn't work with all AnyEvent backends.
13 - disassociate c contexts from coro objects - this is agruably more
14 correct, but mostly allows sharing of cctxs between coro and state
15 objects, for added memory savings and speed increases.
16 - bumped $Coro::POOL_RSS up to 32kb by default.
17 - no longer set the optype to OP_CUSTOM, as B::* understandably
18 doesn't like this very much (and we *are* a type of entersub).
19 - implement state cloning, just to prove that call/cc can be done.
20 - automatically load Coro::AnyEvent in Coro::Handle.
21 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
22 do not have this method (and don't need it either).
23 - speed up generic anyevent methods in Coro::Handle by using rouse
24 callbacks.
25 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
26 others. It also makes the debugger happier, as you can trace
27 through the idle threads now.
28 - eg/event was pretty broken.
29 - better 5.8.6 compatibility.
30
315.0 Thu Nov 20 10:35:05 CET 2008
32 - NEW ARCHITECTURE: use the latest 4.x version if you experience
33 stability issues.
34 - bump API version to 7 - all dependents must be recompiled.
35 - removed timed_* functions - they were not being used anyways
36 and should be replaced by a more generic mechanism -
37 and were annoying to support anyways :)
38 - removed SemaphoreSet's waiter method - use sem method instead.
39 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
40 - async_pool did free a scalar value twice
41 ("Attempt to unreference...").
42 - fix a longstanding bug where calling terminate on a coro that
43 was waiting for a semaphore that was just becoming available
44 would cause a deadlock (semaphore would get into a state where
45 it was available but waiters were still blocked).
46 - calling throw on a coroutine that is waiting for a semaphore will
47 no longer make it acquire the semaphore (and thus leak a count).
48 - perl's process emulation is now not even theoretically supported
49 anymore.
50 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
51 conversion of callback-style to blocking-style.
52 - new methods $coro->schedule_to and ->cede_to, to specifically
53 schedule or cede to a specific coroutine.
54 - new function Coro::Semaphore::wait.
55 - use named constants in Coro::Channel (Richard Hundt).
56 - directly patch the entersub opcode calling SLF functions (cede,
57 transfer and so on). this does speed up context switching, but
58 more importanly, it frees us from the hardcoded behaviour of
59 entersub, so we might actually be able to return something from
60 those functions and atcually create new ones.
61 - take advantage of __builtin_frame_address on gcc.
62 - expose THX in coroapi (not sure whether this was a wise decision,
63 as "threaded" perls are running at half speed anyways).
64 - implement execute_slf (schedule-like-function) interface that makes
65 it possible to implement schedule-like-functions in XS.
66 - use new SLF interface to massively speed up Coro::EV by roughly a
67 factor of two.
68 - used new SLF interface to massively speed up Coro::Semaphore by a
69 factor of three.
70 - used new SLF interface to speed up Coro::AIO by roughly a factor of
71 four and reduce its memory usage considerably.
72 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
73 for a nice speedup and vastly more correct behaviour. Also implement
74 a new method "sem" to get at the underlying semaphore object.
75 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
76 (in comparison) 20-40% speedup.
77 - used new SLF interface to reimplement Coro::Signal gaining
78 some unknown (because I was too lazy), but certain, speedup, and also
79 making signals reliable for the first time.
80 - used new SLF interface and other optimisations to speed up async_pool
81 by a factor of two. It also doesn't rely on perl's exception mechanism
82 to exit anymore. The overhead for terminating an async_pool, coro over
83 a normal async is now very small.
84 - sped up coroutine creation/destruction by 40%.
85 - forgot to include Coro/libcoro/README in the dist for all these years.
86 - work around a freebsd pthreads bug (manual testcancel is required as
87 pthread_cond_wait isn't a cancellation point on freebsd).
88 - use new rouse functions to speed up and simplify Coro::BDB.
89 - make "prefer perl native functions" work with threaded perls.
90 - condense Coro::Debug ps output, hint at v and w flags.
91 - (libcoro) lots of minor cleanups and portability improvements.
92
934.914 Wed Nov 19 12:54:18 CET 2008
94 - fix a disastrous bug in the readline optimisation
95 introduced in 4.801.
96
974.913 Sat Nov 15 07:58:28 CET 2008
98 - async_pool did free a scalar value twice
99 ("Attempt to unreference...").
100
1014.912 Thu Nov 13 18:31:23 CET 2008
102 - minor cleanups.
103 - use much larger stacks on linux and perl < 5.8.8.
104 - Coro::Debug::new_unix_server did not unlink the socket
105 when destroyed.
106
1074.911 Tue Nov 11 04:26:17 CET 2008
108 - "port" to threaded perls.
109
1104.91 Mon Nov 10 05:36:38 CET 2008
111 - the ->throw exception object no longer leaks.
112 - creating a new cctx leaked a scopestack entry (memleak).
113 - new coroutines didn't get created with a zero flags field
114 (unknown impact).
115 - calling ->throw on a not-yet-started coroutine should now work
116 instead of being ignored.
117 - ->throw is now supported on Coro::State objects.
118 - clean up cctx creation code a bit.
119 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
120
1214.9 Sat Nov 8 17:45:27 CET 2008
122 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
123 - (libcoro) no longer leak threads in the experimental pthread backend,
124 also speed it up considerably.
125 - (libcoro) do not rely on makecontext passing void *'s unscathed.
126 - fix compiletime dependencies on libcoro in the Makefile.
127 - cctx_count wasn't always updated properly.
128 - Coro::State::cctx_stacksize wasn't applied correctly.
129 - new function Coro::State::cctx_max_idle.
130 - the default max number of idle C contexts is now 4.
131 - (libcoro) try harder to get _setjmp/_longjmp.
132 - (libcoro) cleanup and extend the libcoro API to officially
133 allow the creation of empty source contexts.
134 - very experimental workaround for the totally broken netbsd platform.
135 - tried to hack around openbsd bugs.
136
1374.804 Wed Nov 5 16:36:00 CET 2008
138 - Coro::Debug::new_unix_server would not create a non-blocking listening
139 socket, sometimes causing freezes.
140 - (libcoro) fix misaligned stack points for setjmp and assembly
141 methods, which can cause crashes on x86/x86_64 with a sufficiently
142 aggressive compiler.
143 - new function: Coro::Debug::new_tcp_server.
144 - move ->throw into the Coro class because it only works on coro objects.
145
1464.803 Mon Nov 3 17:16:12 CET 2008
147 - (libcoro) use a global asm statement to become independent of gcc
148 otpimisations for CORO_ASM (thanks to pippijn for the idea).
149 - try to workaround yet another broken bsd, this time dragonfly.
150
1514.802 Thu Oct 30 10:56:12 CET 2008
152 - support -fno-omit-frame-pointer on x86 with the assembly method.
153 - tune 01_unblock.t tests a bit.
154
1554.801 Wed Oct 22 18:33:37 CEST 2008
156 - improve readline speed for very long "lines".
157 - backport to 5.8.8.
158
1594.8 Thu Oct 2 13:34:40 CEST 2008
160 - new function Coro::AIO::aio_wait.
161 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
162 - greatly speed up and reduce memory usage of Coro::AIO requests.
163 - implement some other µ-optimisations.
164
1654.749 Mon Sep 29 14:40:12 CEST 2008
166 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
167
1684.748 Sat Sep 27 14:03:19 CEST 2008
169 - implement, but do not document, PerlIO::cede(granularity).
170 - Coro::Storable forgot to wrap Storable::pstore.
171 - work around the multitude of leaks and memory corruption
172 bugs in PerlIO::via by using our own C-level perliol. As a side
173 effect, Coro::Storable is now much, much, much faster.
174
1754.747 Tue Sep 23 01:59:41 CEST 2008
176 - fix a per-cv memleak (one empty array was leaked per
177 code reference).
178 - avoid a crash in coro->call|rss when the coroutine was already
179 destroyed (most noticably when using Coro::Debug::ps :)
180 - also protect *Storable::FILE.
181 - push up default storable granularity to 20ms.
182
1834.746 Sun Sep 21 03:22:20 CEST 2008
184 - be more insistent on locking Storable against reentrancy
185 in Coro::Storable.
186 - move swap_def?v and throw to Coro::State, as documented.
187
1884.745 Thu Jul 24 00:14:38 CEST 2008
189 - remove debugging code related to MgPV_nolen_const, also try to
190 make it compile with perl 5.8.6 (yes, apple apparently loves
191 outdated software). Reported by John S.
192
1934.744 Tue Jul 8 22:06:35 CEST 2008
194 - correctly provide default DIE/WARN handlers as documented.
195 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
196 implementations inside perl work fine for us.
197
1984.743 Mon Jun 16 00:21:57 CEST 2008
199 - when using Coro::EV without running EV::loop it could
200 result in busy-waiting for events, this has been fixed.
201 - reduce codesize and improve performance by using EV_DEFAULT_UC.
202
2034.742 Sat May 31 14:10:21 CEST 2008
204 - implement a workaround for (some) perl <5.8.8 versions.
205 - require EV 3.3+.
206
2074.741 Fri May 30 23:33:09 CEST 2008
208 - tell netbsd how utterly broken their imitation of an OS is
209 and refuse to build by default if pthreads are in use.
210 - switch to "s" method on all bsd's by default, as their ucontext
211 stuff seems just too broken.
212 - fix a bug in Coro::Select.
213
2144.74 Thu May 29 20:05:31 CEST 2008
215 - do not test Coro::LWP for lack of dependencies.
216 - do not test Coro::Select for lack of working perls.
217
2184.73 Thu May 29 2008
219 - fix a bug in Coro::EV which would cause it to block despite
220 there being runnable coroutines.
221 - sprinkle "no warnings" freely over everything, also suppress
222 warnings for some other modules.
223 - fix typo in WSAEWOULDBLOCK.
224
2254.72 Sun May 25 05:14:36 CEST 2008
226 - tweak META.yaml a bit, unfortunately, there is no documented way
227 to have optional dependencies with CPAN. doh :(
228 - avoid running some tests on windows because they would fail due to
229 perl bug (broken fork, broken pipes...).
230 - work around perl on windows bugs where perl returns undocumented
231 error codes for sysread, syswrite etc. by taking advantage
232 of AnyEvent's workaround for that problem.
233 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
234 a common perl implementation bug on windows.
235 - use unix domain sockets in testsuite to work around
236 common perl implementation bugs on widows (they are emulated by
237 tcp sockets on windows. ugh.)
238
2394.71 Sat May 24 20:01:27 CEST 2008
240 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
241 - take advantage of async name resolution of AnyEvent::Util.
242 - work around brutal inet_aton override in Coro::LWP.
243 - take advantage of the readyhook in Coro::EV, for smoother
244 scheduling.
245
2464.7 Sun May 11 00:32:19 CEST 2008
247 - completely reworked the Coro manpage.
248 - added Coro::AnyEvent, generic event loop integration.
249 - implement cancel, ready and kill commands in Coro::Debug.
250 - document find_coro in Coro::Debug.
251 - incompatible change: rename has_stack to has_cctx.
252 - Coro::AIO and Coro::BDB no longer force event model detection,
253 use AnyEvent::AIO and AnyEvent::BDB.
254
2554.6 Sat Apr 26 10:05:14 CEST 2008
256 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
257 by the Coro module. It was a mistake to have it in the first place.
258 - (experimental) support for activestate perl 5.10 (method "w").
259 - (experimental) support for strawberry perl (method "a").
260 - coro_sigelem_set did not return a value although it had to,
261 actual impact unknown.
262
2634.51 Mon Apr 14 13:28:27 CEST 2008
264 - make it compile again on 5.8.
265
2664.50 Thu Apr 10 09:43:17 CEST 2008
267 - I did it twice! (see 4.49).
268
2694.49 Sun Apr 6 21:23:31 CEST 2008
270 - grr, instead of compiling the recent changes on 5.10 only they
271 were compiled on 5.8 only.
272
2734.48 Sun Apr 6 20:36:46 CEST 2008
274 - allow coroutine switches during eval's under 5.10.x, as it seems
275 the parser is a per-interpreter option now, so this is safe
276 (this might fix the odd crashing bug).
277 - drop support for 5.9.x versions: they are dead, jim.
278
2794.47 Sun Apr 6 00:37:52 CEST 2008
280 - force cctx allocation on API calls: we know we need to force one
281 and gcc actually manages to confuse our heuristic nowadays,
282 leading to crashes and worse.
283 - document force_cctx.
284
2854.46 Fri Apr 4 22:05:43 CEST 2008
286 - upgrade libcoro, resulting in pthread-backend (which was only created
287 to fulfill the rules of the programming languages shootout).
288
2894.45 Thu Mar 13 11:55:36 CET 2008
290 - fix a file leaking bug in eg/mhyttpd that would allow
291 downloading of any file (reported by oesi).
292 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
293 (also add testcase).
294 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
295 apparently having loads of fun with that).
296 - implement $state->swap_defsv, ->swap_defav and document ->throw.
297
2984.4 Wed Feb 13 16:44:29 CET 2008
299 - only assume .cfi pseudo isns exist on GNU/Linux.
300 - add get_timed method to Coro::Channels.
301 - fixed Coro::Debug manpage.
302 - perl 5.11 compatbility improvement based on patch by
303 Andreas König.
304
3054.37 Sun Jan 20 11:25:23 CET 2008
306 - soften the check for an active parser for perl 5.10 (avoiding
307 "Coro::State::transfer called while parsing" in many cases).
308
3094.36 Sun Jan 13 10:53:56 CET 2008
310 - reset diehook when terminating from an async_pool as to not
311 trigger any __DIE__ handlers.
312
3134.35 Sun Jan 13 04:14:13 CET 2008
314 - "bt" debug command now displays any exceptions
315 from longmess and also skips the innermost
316 stackframes, giving more useufl output.
317 - allow backtraces in coroutines blocked in Coro::EV,
318 at a <1% speed hit.
319 - handle localising of $SIG{__WARN__} and __DIE__
320 properly (with a proper amount of dirty hacking).
321
3224.34 Sat Dec 22 17:49:53 CET 2007
323 - upgrade to EV version 2.0 API.
324
3254.33 Mon Dec 17 08:36:12 CET 2007
326 - make Coro::AIO etc. loadable in the absence of EV.
327
3284.32 Mon Dec 17 07:46:02 CET 2007
329 - majorly improved Coro::Handle's performance with Coro::EV.
330 - implemented the until now mythical Coro::BDB module.
331 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
332
3334.31 Wed Dec 5 12:32:39 CET 2007
334 - remove warn statement form Coro::Util.
335
3364.3 Tue Dec 4 20:33:14 CET 2007
337 - calls to the idle function could cause stack corruption
338 when the stack changed.
339 - do no longer rely on the presence of EV::DNS if EV is used
340 (because it is gone), but instead take avdantage of EV::ADNS
341 if available.
342 - add ($) prototypes to all functions in Coro::Storable.
343 - use a conventional (safer) idle callback in Coro::EV.
344 - do accept quickly in Coro::Debug to avoid endless loops.
345
3464.22 Fri Nov 30 16:04:04 CET 2007
347 - really use optimised versions for Event and EV in Coro::Util
348 and Coro::Handle.
349
3504.21 Sun Nov 25 10:48:59 CET 2007
351 - fix a spurious memory read.
352 - Coro::EV no longer keeps the eventloop "alive".
353
3544.2 Fri Nov 9 20:47:05 CET 2007
355 - enable/disable tracing from a new coroutine, not a pooled one.
356 - fix a memleak in Coro::Event.
357 - removed killall call from fork_eval.
358 - made sure store_fd is already loaded so that fork_eval
359 does not have to parse autoload in each subprocess.
360 - only use assembly method if -O switch is in $Config{optimize}.
361 - add (optional) Coro::EV module, so far the best event loop module
362 directly supported by Coro.
363 - if the event model is EV, use EV::DNS to resolve
364 stuff in Coro::Util.
365 - don't get confused by multiple event notifications in Coro::Handle.
366 - initial support for EV (libevent interface).
367 - require Event and EV using configure_requires, to force their existance.
368
3694.13 Wed Oct 24 07:26:45 CEST 2007
370 - add Coro::Storable::blocking_thaw.
371 - use a vastly more complicated technique to localise
372 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
373 - use a coroutine for the idle callback Coro::Event,
374 instead of running Event in the current coroutine context.
375 This also catches recursive invocations.
376 - actually report fork errors in gethostbyname and inet_aton.
377
3784.11 Thu Oct 11 02:40:24 CEST 2007
379 - port to threaded perls.
380
3814.1 Thu Oct 11 02:38:16 CEST 2007
382 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
383 be local to each coro (see Coro::State).
384 - incompatible change: for very deep reasons, cede and cede_notself
385 cannot return anything, so nothing will be returned.
386 - possibly bring back 5.10 compatibility (untested).
387 - work around stupid (and wrong) warning on 5.10 :(.
388 - overlay the saved state over the context stack. This saves
389 a few hundred bytes per coroutine on average and also
390 speeds up context switching a bit.
391 - further tune default stack sizes.
392 - (more) correctly calculate stack usage in coro_rss.
393 - Coro::Storable::blocking_* did not properly lock
394 resulting in races between coroutines.
395 - added Coro::Storable::guard.
396 - stopping to trace a coroutine could destroy the cctx of
397 an unrelated coroutine.
398 - explain the relationship between Perl and C coroutines in
399 more detail in Coro::State.
400 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
401 causing a fork per resolve. This also affected Coro::Socket.
402 - switch to a separate stack in $coro->call/eval to avoid
403 invalidating pointers.
404
4054.03 Sat Oct 6 21:24:00 CEST 2007
406 - added Coro::throw method.
407 - minor code cleanups.
408
4094.02 Sat Oct 6 02:36:47 CEST 2007
9 - fix a very minor per-coroutine memleak (a single codereference). 410 - fix a very minor per-coroutine memleak (a single codereference).
411 - fixed a bug where the currently in-use c context would be freed
412 prematurely (can happen only when programs change the stacksize
413 or use tracing).
414 - tracing can no longer keep a coro alive after it terminated.
415 - do static branch prediction in the common path for gcc. gives
416 about 2-5% speed improvement here.
10 417
114.01 Fri Oct 5 22:10:49 CEST 2007 4184.01 Fri Oct 5 22:10:49 CEST 2007
12 - instead of recreating *a* standard output handle we simply 419 - instead of recreating *a* standard output handle we simply
13 use STDOUT, which is faster and hopefully more robust. 420 use STDOUT, which is faster and hopefully more robust.
14 421

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