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Comparing Coro/Changes (file contents):
Revision 1.65 by root, Mon Dec 31 20:41:44 2001 UTC vs.
Revision 1.299 by root, Tue Dec 4 19:33:43 2007 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.
4TODO: maybe implement a default message channel, very much like Erlang
5 (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)).
7
84.3 Tue Dec 4 20:33:14 CET 2007
9 - calls to the idle function could cause stack corruption
10 when the stack changed.
11 - do no longer rely on the presence of EV::DNS if EV is used
12 (because it is gone), but instead take avdantage of EV::ADNS
13 if available.
14 - add ($) prototypes to all functions in Coro::Storable.
15 - use a conventional (safer) idle callback in Coro::EV.
16 - do accept quickly in Coro::Debug to avoid endless loops.
17
184.22 Fri Nov 30 16:04:04 CET 2007
19 - really use optimised versions for Event and EV in Coro::Util
20 and Coro::Handle.
21
224.21 Sun Nov 25 10:48:59 CET 2007
23 - fix a spurious memory read.
24 - Coro::EV no longer keeps the eventloop "alive".
25
264.2 Fri Nov 9 20:47:05 CET 2007
27 - enable/disable tracing from a new coroutine, not a pooled one.
28 - fix a memleak in Coro::Event.
29 - removed killall call from fork_eval.
30 - made sure store_fd is already loaded so that fork_eval
31 does not have to parse autoload in each subprocess.
32 - only use assembly method if -O switch is in $Config{optimize}.
33 - add (optional) Coro::EV module, so far the best event loop module
34 directly supported by Coro.
35 - if the event model is EV, use EV::DNS to resolve
36 stuff in Coro::Util.
37 - don't get confused by multiple event notifications in Coro::Handle.
38 - initial support for EV (libevent interface).
39 - require Event and EV using configure_requires, to force their existance.
40
414.13 Wed Oct 24 07:26:45 CEST 2007
42 - add Coro::Storable::blocking_thaw.
43 - use a vastly more complicated technique to localise
44 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
45 - use a coroutine for the idle callback Coro::Event,
46 instead of running Event in the current coroutine context.
47 This also catches recursive invocations.
48 - actually report fork errors in gethostbyname and inet_aton.
49
504.11 Thu Oct 11 02:40:24 CEST 2007
51 - port to threaded perls.
52
534.1 Thu Oct 11 02:38:16 CEST 2007
54 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
55 be local to each coro (see Coro::State).
56 - incompatible change: for very deep reasons, cede and cede_notself
57 cannot return anything, so nothing will be returned.
58 - possibly bring back 5.10 compatibility (untested).
59 - work around stupid (and wrong) warning on 5.10 :(.
60 - overlay the saved state over the context stack. This saves
61 a few hundred bytes per coroutine on average and also
62 speeds up context switching a bit.
63 - further tune default stack sizes.
64 - (more) correctly calculate stack usage in coro_rss.
65 - Coro::Storable::blocking_* did not properly lock
66 resulting in races between coroutines.
67 - added Coro::Storable::guard.
68 - stopping to trace a coroutine could destroy the cctx of
69 an unrelated coroutine.
70 - explain the relationship between Perl and C coroutines in
71 more detail in Coro::State.
72 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
73 causing a fork per resolve. This also affected Coro::Socket.
74 - switch to a separate stack in $coro->call/eval to avoid
75 invalidating pointers.
76
774.03 Sat Oct 6 21:24:00 CEST 2007
78 - added Coro::throw method.
79 - minor code cleanups.
80
814.02 Sat Oct 6 02:36:47 CEST 2007
82 - fix a very minor per-coroutine memleak (a single codereference).
83 - fixed a bug where the currently in-use c context would be freed
84 prematurely (can happen only when programs change the stacksize
85 or use tracing).
86 - tracing can no longer keep a coro alive after it terminated.
87 - do static branch prediction in the common path for gcc. gives
88 about 2-5% speed improvement here.
89
904.01 Fri Oct 5 22:10:49 CEST 2007
91 - instead of recreating *a* standard output handle we simply
92 use STDOUT, which is faster and hopefully more robust.
93
944.0 Fri Oct 5 12:56:00 CEST 2007
95 - incompatibly changed Coro::Storable::freeze.
96 - major new feature: added Coro::Debug, for interactive coroutine
97 debugging, tracing and much more.
98 - major bug fix: unbelievable, but true: $_, $/ and many other
99 "saved" variables actually weren't being saved. This has been fixed,
100 of course, while increasing performance while losing all the save
101 flags.
102 - save flags are gone, and all the api functions dealing with them.
103 - added Coro::Semaphore::adjust.
104 - added Coro::Util::fork_eval.
105 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
106 - added Coro::killall.
107 - reduce initial stack sizes to allow for "micro-coroutines".
108 - better async_pool resource management, moved parts of async_pool
109 handling to XS (major speed improvement).
110 - actually croak before modifying important data structures.
111 - refuse to transfer while compiling.
112 - possibly support eval EXPR better now.
113 - enable assembly per default on linux+bsd x86+amd64.
114 - all internal members were renamed _something for easier subclassing.
115 - many minor tweaks.
116
1173.63 Wed May 16 14:10:06 CEST 2007
118 - implement handcoded assembly for x86/amd64 SVR ABI.
119
1203.62 Fri Apr 27 21:36:06 CEST 2007
121 - upgrade libcoro (which might set unwind info correctly).
122 - change default on linux to setjmp/longjmp.
123
1243.61 Thu Apr 19 12:36:18 CEST 2007
125 - Coro::Storable caused an endless loop when thawing invalid
126 pst's sometimes.
127 - use a Semaphore in Coro::Storable, as Storable doesn't
128 seem to be reentrant (although it is documented to
129 be threadsafe...).
130 - fix Coro::Signal to bring back the original unreliable
131 but stateful semantics.
132 - fixed a lot of typos in Coro.pm (patch submitted by David
133 Steinbrunner, which applied flawlessly).
134
1353.6 Sat Apr 14 17:13:31 CEST 2007
136 - added some bugfixes to get eg/myhttpd working again.
137 - added Coro::Storable for often-cede'ing freeze/thaw.
138 - try to do a clean exit when a coroutine calls exit
139 (EXPERIMENTAL).
140 - got rid of indirect call through _coro_init.
141 - updated the partly antique examples in eg/ to
142 work again and be a bit less magic, too.
143 - fixed Coro::Signal semantics to work as documented again.
144
1453.55 Sun Mar 25 01:20:47 CET 2007
146 - add SAVE_DEFFH to save the default filehandle and enable
147 it by default.
148 - finally move socket-operations from Coro::Socket to Coro::Handle
149 to be able to unblock foreign sockets.
150 - add Coro::State::save_also and guarded_save.
151 - add count accessor to Coro::Semaphore.
152 - add Coro::State::cctx_stacksize.
153 - just for the fun of it, do not rely on implicit context,
154 which can dramatically improve performance, but people
155 using windows-process-emulation perls do not care much about
156 performance.
157
1583.51 Sun Mar 4 14:18:04 CET 2007
159 - fixed a problem when you weakened references to Coro::State's
160 (patch by Yuval Kogman).
161
1623.501 Wed Feb 28 12:44:07 CET 2007
163 - rename some global symbols as macosx from hell redefines
164 them without asking.
165
1663.5 Tue Feb 13 20:22:53 CET 2007
167 - do AnyEvent model detection earlier, avoiding problems
168 caused by first using AnyEvent and later Coro::Event.
169 - implement and document Coro::Event event objects.
170 - fix a potential problem in Coro::Event causing crashes.
171 - initialise PL_comppad when creating a new coroutine,
172 avoids crashes on early coro destruction.
173
1743.41 Mon Jan 22 19:19:49 CET 2007
175 - readline on Coro::Handle did not support undefined $/,
176 nor did it deliver partial lines on EOF or error.
177 - implement malloc fallback for stack allocation because
178 stupid broken idiotic OSX has a stupid broken
179 idiotic fits-the-whole-os mmap "implementation" and
180 my dick feels longer if Coro is portable even to
181 obsolete platforms.
182
1833.4 Fri Jan 19 21:52:54 CET 2007
184 - remove t/09_timer.t, as it isn't really testing much
185 but was rather flaky in practise.
186 - async_pool coro would keep arguments and callback alive until
187 it was reused.
188 - cancellation of a coroutine could cause spurious idle calls
189 in cede_notself.
190
1913.3 Sat Jan 6 03:45:00 CET 2007
192 - implement $coro->on_destroy.
193 - Coro::Event blocking semantics have been changed,
194 documented and - hopefully - improved.
195 - fix nice adding, not subtracting, from priority.
196 - fix ->prio and api_is_ready (patch by Mark Hinds).
197 - fixed an assert ("... == prev__cctx->idle_te")
198 that could errronously trigger.
199 - fix various large and small memleaks.
200 - use a (hopefully) more stable cancel implementation
201 that immediately frees the coroutine data.
202 - cede/cede_notself return a status now.
203 - added Coro::guard function.
204 - added a global coroutine pool for jobs (on my machine,
205 I can create and execute 48k simple coros/s with async,
206 and 128k coros with async_pool).
207 - Coro::AIO now uses the coroutine priority as io priority.
208
2093.2 Fri Dec 22 05:07:09 CET 2006
210 - improve portability to slightly older perls.
211 - use cleaner coroutine destruction.
212 - simplify configuration for users.
213 - optionally (unrecommended) prefer perl functions over
214 their coro replacements.
215
2163.11 Tue Dec 5 13:11:24 CET 2006
217 - fixed some bogus assert's, but as perl.h disables assert even
218 without NDEBUG (thank you very much), not too many people should
219 notice (that did include myself). Andreas König noticed, though :)
220 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
221 it. Also noticed by Andreas König :)
222 - save/restore tainted status.
223 - verified to pass the testsuite on my 5.9.5.
224
2253.1 Mon Dec 4 23:03:40 CET 2006
226 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
227 - incompatible change: transfer flags are now per-state.
228 - give a better error message on deadlock.
229 - document Coro::nready.
230 - enhanced testsuite.
231
2323.01 Sun Dec 3 23:47:42 CET 2006
233 - forgot to include Coro::Timer.
234
2353.0 Sun Dec 3 22:57:25 CET 2006
236 - the "FINALLY COMPLETELY STABLE" release (coming soon:
237 the "FAMOUS LAST WORDS" release).
238 - implement a new stack sharing algorithm, which uses a stack
239 pool (size currently hardcoded).
240 - make stack sharing mandatory (it no longer uses a heuristic).
241 - eval/die no longer cause weird problems under heavy use.
242 - Coro::Event could cause livelocks if it was used but
243 no Coro::Event watchers were used.
244 - Coro::Event now uses asynccheck as prepare does not
245 check for changed watchers.
246 - Coro::Event allows multiple waiting coros and will wake up one
247 per event.
248 - Coro::Event should be cleaner and more efficient now.
249 - new utility function Coro::unblock_sub.
250 - document the sad fact that Event is no longer reentrant.
251 - putting a coroutine into the ready queue twice could under
252 some circumstances lead to stack corruption.
253 - minor incompatibility: subclassing Coro::State is supported
254 directly now without going through a _coro_state member.
255 - state/coro switching is much faster now.
256 - very minor optimisations and code/documentation cleanup.
257 - avoid problems due to compiler inlining.
258 - removed timers from Coro::Timer -> use AnyEvent instead.
259 - replaced Coro::idle coroutine by (cleaner) idle handler.
260 - updated to newest libcoro.
261 - implement enhanced support for valgrind.
262 - implement is_ready and return value for ready.
263 - removed Coro::Cont, it was a misnomer (it's generators),
264 and it was somewhat annoying to get it right. Will come back
265 if somebody asks for it :)
266 - many ->wait methods and Coro::Event could return
267 spuriously without the event having happened.
268
2692.5 Tue Nov 7 12:22:33 CET 2006
270 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
271 use AnyEvent, moved them to Coro/.
272 - added Coro::LWP which contains all the uglyness required to
273 make LWP non-blocking.
274 - should work with perl 5.9.x now (Andreas König made me do it).
275 - fixed another bug in Coro::Select when the timeout was undef.
276 - reuse PL_start_env for all coros, saves some memory per coroutine.
277 - manage PL_top_env differently, hopefully to avoid panic: top_env.
278 - timeout argument was not properly used in Coro::Socket.
279 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
280 - emulate undocumented(!) functionality of IO::Socket required
281 by LWP(!!).
282 - updated eg/lwp to work with newer lwp's.
283 - remove "FATAL: uncaught exception" prefix. Coroutines that die
284 kill the whole process, just as exceptions in the main "coroutine"
285 did already.
286
2872.1 Wed Nov 1 23:01:13 CET 2006
288 - fix a long-standing bug in Coro::Select where select with
289 zero timeout would instead change the current default filehandle.
290 - use a simpler and hopefully more robust way to clone padlists
291 (uses less memory and a perl function instead of our own).
292 - coro can now create a stack guard area on many architectures.
293 - Coro::AIO properly reexports additional functions from IO::AIO.
294 - updated libcoro with a workaround for OS X,
295 pach and testing by Michael Schwern.
296
2972.0 Tue Oct 24 05:47:17 CEST 2006
298 - support additional aio requests in Coro::AIO.
299
3001.9 (never properly released due to a glitch)
301
3021.8 Thu Feb 2 00:59:06 CET 2006
303 - applied suggested patch by SAMV to avoid problems during stupid
304 mark & sweep gc run.
305 - applied patch by Scott Walters for 5.9.3 compatibility.
306
3071.7 Tue Dec 27 01:41:58 CET 2005
308 - added Coro::AIO, a thin wrapper around IO::AIO.
309 - improved Makefile.PL explanations.
310
3111.6 Mon Dec 12 21:30:05 CET 2005
312 - additionally save PM_curpm might fix as-of-yet
313 unseen problems with regex matches being attributed to the
314 wrong package.
315 - add t/10_bugs.t, which currently checks against imho broken
316 perls that use 0.26MB of stack space per Perl_magic_get
317 invocation (newer linuxes) as opposed to the 0.0002MB perl
318 normally uses.
319 - make stacksize configurable for the ultimate debian experience.
320
3211.51 Mon Dec 12 18:48:36 CET 2005
322 - remove debugging warn() accidentally left in Coro::Select.
323
3241.5 Tue Nov 29 13:32:44 CET 2005
325 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
326 - fix Coro::Select 'select'.
327 - strict'ify some modules.
328 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
329 - use XSLoader in selected modules.
330 - remove some 5.6 compatibility cruft.
331
3321.4 Tue Sep 6 00:11:05 CEST 2005
333 - libcoro did not take into account the trampoline on amd64,
334 when 'l'inux method was used.
335
3361.31 Tue Aug 30 23:31:33 CEST 2005
337 - some portability fixes/workarounds.
338
3391.3 Sat Aug 20 03:08:56 CEST 2005
340 - no code changes. module seems to work fine.
341 - improve Coro::State docs, remove reference to nonexisting
342 Coro::State::flush method.
343 - no longer autodetect windows, present it as an option instead.
344
3451.2 Mon May 16 02:00:55 CEST 2005
346 - included libcoro.c earlier in State.xs, might improve portability.
347 - use a faster and possibly more stable Coro::Cont implementation.
348 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
349 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
350 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
351
3521.11 Thu Mar 3 18:00:52 CET 2005
353 - change of contact address.
354
3551.1 Tue Feb 22 20:51:16 CET 2005
356 - support [l]inux method on amd64.
357 - allow some context switches while compiling/eval'ing.
358
3591.0 Tue Aug 10 03:47:27 CEST 2004
360 - Event 0.89 fixes the bug again.
361 - fix the remaining(??) memleak. I didn't free the cache-AV for
362 padlists, so one AV per created anon-sub leaked.
363
3640.97 Fri May 14 15:23:32 CEST 2004
365 - remove stupid gcc extension that was an experiment only anyway.
366
3670.96 Thu May 13 18:09:29 CEST 2004
368 - tell people if they have yet another broken Event variant.
369 - made Coro to work _better_ with threads (it seems that, as long
370 as you use Coros in one thread only everything will work fine.
371 Looking at the perl source the problem might be missing locking
372 between Coro and some perl internal routines. That's not easily
373 fixable).
374 - (hopefully) got rid of the static xnext inside transfer.
375
3760.95 Sun Feb 15 03:20:28 CET 2004
377 - removed Coro::State::flush, implemented a new and much
378 faster caching mechanism by attaching magic to the CV.
379 - a memleak with (real) closures remains.
380 - dramatically reduced size of stacks to 65536 (linux/x86), after
381 observing that even myhttpd never had more than a kilobyte
382 of stack in use (stack is still only physically allocated in
383 pagesize increments for systems suporting mmap).
384 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
385 - fix for threaded perl.
386
3870.9 Sun Nov 23 04:32:39 CET 2003
388 - fix a few very hard to track down but (of course) stupid
389 memory leaks.
390 - stringify version number to avoid locale problems :(.
391 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
392 hopefully ignoring it "just works".
393
3940.8 Wed Nov 5 19:38:40 CET 2003
395 - port to perl5.005_03, but only 5.8.x+ is supported!
396 - honor LocalAddr even without LocalPort in Coro::Socket.
397
3980.7 Tue May 27 03:12:38 CEST 2003
399 - the version jump indicates some level of testing, not gobs
400 of new features.
401 - uh... I found the prompt function in ExtUtils::MakeMaker.
402 Highly correct stuff, that is...
403 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
404 the fix is not well understood by the author, so beware :(.
405
4060.652 Thu May 8 02:54:46 CEST 2003
407 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
408 cause version 4 doesn't have ucontext.
409 - Benjamin Reed reported that setjmp works fine on darwin,
410 so preselect it.
411
4120.651 Sat Mar 29 15:00:23 CET 2003
413 - fix a bug in Coro::Handle where some bytes could get lost
414 on reading, reported by jason@nichego.net.
415
4160.65 Sun Mar 23 00:08:26 CET 2003
417 - added a README.linux-glibc.
418 - new module Coro::Select.
419 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
420 (I never claimed that I know what I am doing ;).
421 - set default to setjmp/longjmp on non-x86-linux.
422
4230.6 Thu Nov 21 11:09:06 CET 2002
424 - made lazy context switching the default.
425 - fixed the bug where SemaphoreSet::guard
426 was the same as timed_guard and timed_guard was missing.
427 - fix a memleak in Coro::Timer.
428 - reclassified context sharing as not experimental.
429
4300.534 Sun Apr 14 03:05:12 CEST 2002
431 - fixed backspace => tab in header parsing (myhttpd).
432 - added eg/readline, for elmex.
433 - Coro::Event now calls ->start on first call instead of
434 ->again, which created wrong timeouts for the first ->next.
435 - fixed a bug where Coro::Socket returned a closed socket instead
436 of nothing on ECONNREFUSED and similar error conditions.
437
4380.533 Mon Feb 18 18:49:40 CET 2002
439 - adapt to finally working Event-0.85.
440 - fixed buggy event initialization (trapped under windows, but how
441 could it possibly have worked anywhere?)
442
4430.532 Wed Jan 16 02:45:32 CET 2002
3 - removed the reference to pp_entersub, might compile on 444 - removed the reference to pp_entersub, might work on
4 (some) win32 perls now. 445 (some) win32 perls now (testsuite works under cygwin,
446 without Event, which freezes).
5 447
60.531 Mon Dec 10 22:18:44 CET 2001 4480.531 Mon Dec 10 22:18:44 CET 2001
7 - Fixed a bug in SemaphoreSet::timed_down. 449 - Fixed a bug in SemaphoreSet::timed_down.
8 450
90.53 Tue Nov 27 21:11:13 CET 2001 4510.53 Tue Nov 27 21:11:13 CET 2001

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