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Comparing Coro/Changes (file contents):
Revision 1.96 by root, Tue Aug 10 01:56:30 2004 UTC vs.
Revision 1.366 by root, Thu Aug 14 12:48:20 2008 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2
3TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO.
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
8 - move swap_def?v and throw to Coro::State, as documented.
9
104.745 Thu Jul 24 00:14:38 CEST 2008
11 - remove debugging code related to MgPV_nolen_const, also try to
12 make it compile with perl 5.8.6 (yes, apple apparently loves
13 outdated software). Reported by John S.
14
154.744 Tue Jul 8 22:06:35 CEST 2008
16 - correctly provide default DIE/WARN handlers as documented.
17 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
18 implementations inside perl work fine for us.
19
204.743 Mon Jun 16 00:21:57 CEST 2008
21 - when using Coro::EV without running EV::loop it could
22 result in busy-waiting for events, this has been fixed.
23 - reduce codesize and improve performance by using EV_DEFAULT_UC.
24
254.742 Sat May 31 14:10:21 CEST 2008
26 - implement a workaround for (some) perl <5.8.8 versions.
27 - require EV 3.3+.
28
294.741 Fri May 30 23:33:09 CEST 2008
30 - tell netbsd how utterly broken their imitation of an OS is
31 and refuse to build by default if pthreads are in use.
32 - switch to "s" method on all bsd's by default, as their ucontext
33 stuff seems just too broken.
34 - fix a bug in Coro::Select.
35
364.74 Thu May 29 20:05:31 CEST 2008
37 - do not test Coro::LWP for lack of dependencies.
38 - do not test Coro::Select for lack of working perls.
39
404.73 Thu May 29 2008
41 - fix a bug in Coro::EV which would cause it to block despite
42 there being runnable coroutines.
43 - sprinkle "no warnings" freely over everything, also suppress
44 warnings for some other modules.
45 - fix typo in WSAEWOULDBLOCK.
46
474.72 Sun May 25 05:14:36 CEST 2008
48 - tweak META.yaml a bit, unfortunately, there is no documented way
49 to have optional dependencies with CPAN. doh :(
50 - avoid running some tests on windows because they would fail due to
51 perl bug (broken fork, broken pipes...).
52 - work around perl on windows bugs where perl returns undocumented
53 error codes for sysread, syswrite etc. by taking advantage
54 of AnyEvent's workaround for that problem.
55 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
56 a common perl implementation bug on windows.
57 - use unix domain sockets in testsuite to work around
58 common perl implementation bugs on widows (they are emulated by
59 tcp sockets on windows. ugh.)
60
614.71 Sat May 24 20:01:27 CEST 2008
62 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
63 - take advantage of async name resolution of AnyEvent::Util.
64 - work around brutal inet_aton override in Coro::LWP.
65 - take advantage of the readyhook in Coro::EV, for smoother
66 scheduling.
67
684.7 Sun May 11 00:32:19 CEST 2008
69 - completely reworked the Coro manpage.
70 - added Coro::AnyEvent, generic event loop integration.
71 - implement cancel, ready and kill commands in Coro::Debug.
72 - document find_coro in Coro::Debug.
73 - incompatible change: rename has_stack to has_cctx.
74 - Coro::AIO and Coro::BDB no longer force event model detection,
75 use AnyEvent::AIO and AnyEvent::BDB.
76
774.6 Sat Apr 26 10:05:14 CEST 2008
78 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
79 by the Coro module. It was a mistake to have it in the first place.
80 - (experimental) support for activestate perl 5.10 (method "w").
81 - (experimental) support for strawberry perl (method "a").
82 - coro_sigelem_set did not return a value although it had to,
83 actual impact unknown.
84
854.51 Mon Apr 14 13:28:27 CEST 2008
86 - make it compile again on 5.8.
87
884.50 Thu Apr 10 09:43:17 CEST 2008
89 - I did it twice! (see 4.49).
90
914.49 Sun Apr 6 21:23:31 CEST 2008
92 - grr, instead of compiling the recent changes on 5.10 only they
93 were compiled on 5.8 only.
94
954.48 Sun Apr 6 20:36:46 CEST 2008
96 - allow coroutine switches during eval's under 5.10.x, as it seems
97 the parser is a per-interpreter option now, so this is safe
98 (this might fix the odd crashing bug).
99 - drop support for 5.9.x versions: they are dead, jim.
100
1014.47 Sun Apr 6 00:37:52 CEST 2008
102 - force cctx allocation on API calls: we know we need to force one
103 and gcc actually manages to confuse our heuristic nowadays,
104 leading to crashes and worse.
105 - document force_cctx.
106
1074.46 Fri Apr 4 22:05:43 CEST 2008
108 - upgrade libcoro, resulting in pthread-backend (which was only created
109 to fulfill the rules of the programming languages shootout).
110
1114.45 Thu Mar 13 11:55:36 CET 2008
112 - fix a file leaking bug in eg/mhyttpd that would allow
113 downloading of any file (reported by oesi).
114 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
115 (also add testcase).
116 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
117 apparently having loads of fun with that).
118 - implement $state->swap_defsv, ->swap_defav and document ->throw.
119
1204.4 Wed Feb 13 16:44:29 CET 2008
121 - only assume .cfi pseudo isns exist on GNU/Linux.
122 - add get_timed method to Coro::Channels.
123 - fixed Coro::Debug manpage.
124 - perl 5.11 compatbility improvement based on patch by
125 Andreas König.
126
1274.37 Sun Jan 20 11:25:23 CET 2008
128 - soften the check for an active parser for perl 5.10 (avoiding
129 "Coro::State::transfer called while parsing" in many cases).
130
1314.36 Sun Jan 13 10:53:56 CET 2008
132 - reset diehook when terminating from an async_pool as to not
133 trigger any __DIE__ handlers.
134
1354.35 Sun Jan 13 04:14:13 CET 2008
136 - "bt" debug command now displays any exceptions
137 from longmess and also skips the innermost
138 stackframes, giving more useufl output.
139 - allow backtraces in coroutines blocked in Coro::EV,
140 at a <1% speed hit.
141 - handle localising of $SIG{__WARN__} and __DIE__
142 properly (with a proper amount of dirty hacking).
143
1444.34 Sat Dec 22 17:49:53 CET 2007
145 - upgrade to EV version 2.0 API.
146
1474.33 Mon Dec 17 08:36:12 CET 2007
148 - make Coro::AIO etc. loadable in the absence of EV.
149
1504.32 Mon Dec 17 07:46:02 CET 2007
151 - majorly improved Coro::Handle's performance with Coro::EV.
152 - implemented the until now mythical Coro::BDB module.
153 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
154
1554.31 Wed Dec 5 12:32:39 CET 2007
156 - remove warn statement form Coro::Util.
157
1584.3 Tue Dec 4 20:33:14 CET 2007
159 - calls to the idle function could cause stack corruption
160 when the stack changed.
161 - do no longer rely on the presence of EV::DNS if EV is used
162 (because it is gone), but instead take avdantage of EV::ADNS
163 if available.
164 - add ($) prototypes to all functions in Coro::Storable.
165 - use a conventional (safer) idle callback in Coro::EV.
166 - do accept quickly in Coro::Debug to avoid endless loops.
167
1684.22 Fri Nov 30 16:04:04 CET 2007
169 - really use optimised versions for Event and EV in Coro::Util
170 and Coro::Handle.
171
1724.21 Sun Nov 25 10:48:59 CET 2007
173 - fix a spurious memory read.
174 - Coro::EV no longer keeps the eventloop "alive".
175
1764.2 Fri Nov 9 20:47:05 CET 2007
177 - enable/disable tracing from a new coroutine, not a pooled one.
178 - fix a memleak in Coro::Event.
179 - removed killall call from fork_eval.
180 - made sure store_fd is already loaded so that fork_eval
181 does not have to parse autoload in each subprocess.
182 - only use assembly method if -O switch is in $Config{optimize}.
183 - add (optional) Coro::EV module, so far the best event loop module
184 directly supported by Coro.
185 - if the event model is EV, use EV::DNS to resolve
186 stuff in Coro::Util.
187 - don't get confused by multiple event notifications in Coro::Handle.
188 - initial support for EV (libevent interface).
189 - require Event and EV using configure_requires, to force their existance.
190
1914.13 Wed Oct 24 07:26:45 CEST 2007
192 - add Coro::Storable::blocking_thaw.
193 - use a vastly more complicated technique to localise
194 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
195 - use a coroutine for the idle callback Coro::Event,
196 instead of running Event in the current coroutine context.
197 This also catches recursive invocations.
198 - actually report fork errors in gethostbyname and inet_aton.
199
2004.11 Thu Oct 11 02:40:24 CEST 2007
201 - port to threaded perls.
202
2034.1 Thu Oct 11 02:38:16 CEST 2007
204 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
205 be local to each coro (see Coro::State).
206 - incompatible change: for very deep reasons, cede and cede_notself
207 cannot return anything, so nothing will be returned.
208 - possibly bring back 5.10 compatibility (untested).
209 - work around stupid (and wrong) warning on 5.10 :(.
210 - overlay the saved state over the context stack. This saves
211 a few hundred bytes per coroutine on average and also
212 speeds up context switching a bit.
213 - further tune default stack sizes.
214 - (more) correctly calculate stack usage in coro_rss.
215 - Coro::Storable::blocking_* did not properly lock
216 resulting in races between coroutines.
217 - added Coro::Storable::guard.
218 - stopping to trace a coroutine could destroy the cctx of
219 an unrelated coroutine.
220 - explain the relationship between Perl and C coroutines in
221 more detail in Coro::State.
222 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
223 causing a fork per resolve. This also affected Coro::Socket.
224 - switch to a separate stack in $coro->call/eval to avoid
225 invalidating pointers.
226
2274.03 Sat Oct 6 21:24:00 CEST 2007
228 - added Coro::throw method.
229 - minor code cleanups.
230
2314.02 Sat Oct 6 02:36:47 CEST 2007
232 - fix a very minor per-coroutine memleak (a single codereference).
233 - fixed a bug where the currently in-use c context would be freed
234 prematurely (can happen only when programs change the stacksize
235 or use tracing).
236 - tracing can no longer keep a coro alive after it terminated.
237 - do static branch prediction in the common path for gcc. gives
238 about 2-5% speed improvement here.
239
2404.01 Fri Oct 5 22:10:49 CEST 2007
241 - instead of recreating *a* standard output handle we simply
242 use STDOUT, which is faster and hopefully more robust.
243
2444.0 Fri Oct 5 12:56:00 CEST 2007
245 - incompatibly changed Coro::Storable::freeze.
246 - major new feature: added Coro::Debug, for interactive coroutine
247 debugging, tracing and much more.
248 - major bug fix: unbelievable, but true: $_, $/ and many other
249 "saved" variables actually weren't being saved. This has been fixed,
250 of course, while increasing performance while losing all the save
251 flags.
252 - save flags are gone, and all the api functions dealing with them.
253 - added Coro::Semaphore::adjust.
254 - added Coro::Util::fork_eval.
255 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
256 - added Coro::killall.
257 - reduce initial stack sizes to allow for "micro-coroutines".
258 - better async_pool resource management, moved parts of async_pool
259 handling to XS (major speed improvement).
260 - actually croak before modifying important data structures.
261 - refuse to transfer while compiling.
262 - possibly support eval EXPR better now.
263 - enable assembly per default on linux+bsd x86+amd64.
264 - all internal members were renamed _something for easier subclassing.
265 - many minor tweaks.
266
2673.63 Wed May 16 14:10:06 CEST 2007
268 - implement handcoded assembly for x86/amd64 SVR ABI.
269
2703.62 Fri Apr 27 21:36:06 CEST 2007
271 - upgrade libcoro (which might set unwind info correctly).
272 - change default on linux to setjmp/longjmp.
273
2743.61 Thu Apr 19 12:36:18 CEST 2007
275 - Coro::Storable caused an endless loop when thawing invalid
276 pst's sometimes.
277 - use a Semaphore in Coro::Storable, as Storable doesn't
278 seem to be reentrant (although it is documented to
279 be threadsafe...).
280 - fix Coro::Signal to bring back the original unreliable
281 but stateful semantics.
282 - fixed a lot of typos in Coro.pm (patch submitted by David
283 Steinbrunner, which applied flawlessly).
284
2853.6 Sat Apr 14 17:13:31 CEST 2007
286 - added some bugfixes to get eg/myhttpd working again.
287 - added Coro::Storable for often-cede'ing freeze/thaw.
288 - try to do a clean exit when a coroutine calls exit
289 (EXPERIMENTAL).
290 - got rid of indirect call through _coro_init.
291 - updated the partly antique examples in eg/ to
292 work again and be a bit less magic, too.
293 - fixed Coro::Signal semantics to work as documented again.
294
2953.55 Sun Mar 25 01:20:47 CET 2007
296 - add SAVE_DEFFH to save the default filehandle and enable
297 it by default.
298 - finally move socket-operations from Coro::Socket to Coro::Handle
299 to be able to unblock foreign sockets.
300 - add Coro::State::save_also and guarded_save.
301 - add count accessor to Coro::Semaphore.
302 - add Coro::State::cctx_stacksize.
303 - just for the fun of it, do not rely on implicit context,
304 which can dramatically improve performance, but people
305 using windows-process-emulation perls do not care much about
306 performance.
307
3083.51 Sun Mar 4 14:18:04 CET 2007
309 - fixed a problem when you weakened references to Coro::State's
310 (patch by Yuval Kogman).
311
3123.501 Wed Feb 28 12:44:07 CET 2007
313 - rename some global symbols as macosx from hell redefines
314 them without asking.
315
3163.5 Tue Feb 13 20:22:53 CET 2007
317 - do AnyEvent model detection earlier, avoiding problems
318 caused by first using AnyEvent and later Coro::Event.
319 - implement and document Coro::Event event objects.
320 - fix a potential problem in Coro::Event causing crashes.
321 - initialise PL_comppad when creating a new coroutine,
322 avoids crashes on early coro destruction.
323
3243.41 Mon Jan 22 19:19:49 CET 2007
325 - readline on Coro::Handle did not support undefined $/,
326 nor did it deliver partial lines on EOF or error.
327 - implement malloc fallback for stack allocation because
328 stupid broken idiotic OSX has a stupid broken
329 idiotic fits-the-whole-os mmap "implementation" and
330 my dick feels longer if Coro is portable even to
331 obsolete platforms.
332
3333.4 Fri Jan 19 21:52:54 CET 2007
334 - remove t/09_timer.t, as it isn't really testing much
335 but was rather flaky in practise.
336 - async_pool coro would keep arguments and callback alive until
337 it was reused.
338 - cancellation of a coroutine could cause spurious idle calls
339 in cede_notself.
340
3413.3 Sat Jan 6 03:45:00 CET 2007
342 - implement $coro->on_destroy.
343 - Coro::Event blocking semantics have been changed,
344 documented and - hopefully - improved.
345 - fix nice adding, not subtracting, from priority.
346 - fix ->prio and api_is_ready (patch by Mark Hinds).
347 - fixed an assert ("... == prev__cctx->idle_te")
348 that could errronously trigger.
349 - fix various large and small memleaks.
350 - use a (hopefully) more stable cancel implementation
351 that immediately frees the coroutine data.
352 - cede/cede_notself return a status now.
353 - added Coro::guard function.
354 - added a global coroutine pool for jobs (on my machine,
355 I can create and execute 48k simple coros/s with async,
356 and 128k coros with async_pool).
357 - Coro::AIO now uses the coroutine priority as io priority.
358
3593.2 Fri Dec 22 05:07:09 CET 2006
360 - improve portability to slightly older perls.
361 - use cleaner coroutine destruction.
362 - simplify configuration for users.
363 - optionally (unrecommended) prefer perl functions over
364 their coro replacements.
365
3663.11 Tue Dec 5 13:11:24 CET 2006
367 - fixed some bogus assert's, but as perl.h disables assert even
368 without NDEBUG (thank you very much), not too many people should
369 notice (that did include myself). Andreas König noticed, though :)
370 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
371 it. Also noticed by Andreas König :)
372 - save/restore tainted status.
373 - verified to pass the testsuite on my 5.9.5.
374
3753.1 Mon Dec 4 23:03:40 CET 2006
376 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
377 - incompatible change: transfer flags are now per-state.
378 - give a better error message on deadlock.
379 - document Coro::nready.
380 - enhanced testsuite.
381
3823.01 Sun Dec 3 23:47:42 CET 2006
383 - forgot to include Coro::Timer.
384
3853.0 Sun Dec 3 22:57:25 CET 2006
386 - the "FINALLY COMPLETELY STABLE" release (coming soon:
387 the "FAMOUS LAST WORDS" release).
388 - implement a new stack sharing algorithm, which uses a stack
389 pool (size currently hardcoded).
390 - make stack sharing mandatory (it no longer uses a heuristic).
391 - eval/die no longer cause weird problems under heavy use.
392 - Coro::Event could cause livelocks if it was used but
393 no Coro::Event watchers were used.
394 - Coro::Event now uses asynccheck as prepare does not
395 check for changed watchers.
396 - Coro::Event allows multiple waiting coros and will wake up one
397 per event.
398 - Coro::Event should be cleaner and more efficient now.
399 - new utility function Coro::unblock_sub.
400 - document the sad fact that Event is no longer reentrant.
401 - putting a coroutine into the ready queue twice could under
402 some circumstances lead to stack corruption.
403 - minor incompatibility: subclassing Coro::State is supported
404 directly now without going through a _coro_state member.
405 - state/coro switching is much faster now.
406 - very minor optimisations and code/documentation cleanup.
407 - avoid problems due to compiler inlining.
408 - removed timers from Coro::Timer -> use AnyEvent instead.
409 - replaced Coro::idle coroutine by (cleaner) idle handler.
410 - updated to newest libcoro.
411 - implement enhanced support for valgrind.
412 - implement is_ready and return value for ready.
413 - removed Coro::Cont, it was a misnomer (it's generators),
414 and it was somewhat annoying to get it right. Will come back
415 if somebody asks for it :)
416 - many ->wait methods and Coro::Event could return
417 spuriously without the event having happened.
418
4192.5 Tue Nov 7 12:22:33 CET 2006
420 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
421 use AnyEvent, moved them to Coro/.
422 - added Coro::LWP which contains all the uglyness required to
423 make LWP non-blocking.
424 - should work with perl 5.9.x now (Andreas König made me do it).
425 - fixed another bug in Coro::Select when the timeout was undef.
426 - reuse PL_start_env for all coros, saves some memory per coroutine.
427 - manage PL_top_env differently, hopefully to avoid panic: top_env.
428 - timeout argument was not properly used in Coro::Socket.
429 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
430 - emulate undocumented(!) functionality of IO::Socket required
431 by LWP(!!).
432 - updated eg/lwp to work with newer lwp's.
433 - remove "FATAL: uncaught exception" prefix. Coroutines that die
434 kill the whole process, just as exceptions in the main "coroutine"
435 did already.
436
4372.1 Wed Nov 1 23:01:13 CET 2006
438 - fix a long-standing bug in Coro::Select where select with
439 zero timeout would instead change the current default filehandle.
440 - use a simpler and hopefully more robust way to clone padlists
441 (uses less memory and a perl function instead of our own).
442 - coro can now create a stack guard area on many architectures.
443 - Coro::AIO properly reexports additional functions from IO::AIO.
444 - updated libcoro with a workaround for OS X,
445 pach and testing by Michael Schwern.
446
4472.0 Tue Oct 24 05:47:17 CEST 2006
448 - support additional aio requests in Coro::AIO.
449
4501.9 (never properly released due to a glitch)
451
4521.8 Thu Feb 2 00:59:06 CET 2006
453 - applied suggested patch by SAMV to avoid problems during stupid
454 mark & sweep gc run.
455 - applied patch by Scott Walters for 5.9.3 compatibility.
456
4571.7 Tue Dec 27 01:41:58 CET 2005
458 - added Coro::AIO, a thin wrapper around IO::AIO.
459 - improved Makefile.PL explanations.
460
4611.6 Mon Dec 12 21:30:05 CET 2005
462 - additionally save PM_curpm might fix as-of-yet
463 unseen problems with regex matches being attributed to the
464 wrong package.
465 - add t/10_bugs.t, which currently checks against imho broken
466 perls that use 0.26MB of stack space per Perl_magic_get
467 invocation (newer linuxes) as opposed to the 0.0002MB perl
468 normally uses.
469 - make stacksize configurable for the ultimate debian experience.
470
4711.51 Mon Dec 12 18:48:36 CET 2005
472 - remove debugging warn() accidentally left in Coro::Select.
473
4741.5 Tue Nov 29 13:32:44 CET 2005
475 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
476 - fix Coro::Select 'select'.
477 - strict'ify some modules.
478 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
479 - use XSLoader in selected modules.
480 - remove some 5.6 compatibility cruft.
481
4821.4 Tue Sep 6 00:11:05 CEST 2005
483 - libcoro did not take into account the trampoline on amd64,
484 when 'l'inux method was used.
485
4861.31 Tue Aug 30 23:31:33 CEST 2005
487 - some portability fixes/workarounds.
488
4891.3 Sat Aug 20 03:08:56 CEST 2005
490 - no code changes. module seems to work fine.
491 - improve Coro::State docs, remove reference to nonexisting
492 Coro::State::flush method.
493 - no longer autodetect windows, present it as an option instead.
494
4951.2 Mon May 16 02:00:55 CEST 2005
496 - included libcoro.c earlier in State.xs, might improve portability.
497 - use a faster and possibly more stable Coro::Cont implementation.
498 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
499 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
500 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
501
5021.11 Thu Mar 3 18:00:52 CET 2005
503 - change of contact address.
504
5051.1 Tue Feb 22 20:51:16 CET 2005
506 - support [l]inux method on amd64.
507 - allow some context switches while compiling/eval'ing.
2 508
31.0 Tue Aug 10 03:47:27 CEST 2004 5091.0 Tue Aug 10 03:47:27 CEST 2004
4 - Event 0.89 fixes the bug again. 510 - Event 0.89 fixes the bug again.
5 - fix the remaining(??) memleak. I didn't free the cache-AV for 511 - fix the remaining(??) memleak. I didn't free the cache-AV for
6 padlists, so one AV per created anon-sub leaked. 512 padlists, so one AV per created anon-sub leaked.
7 513
80.97 Fri May 14 15:23:32 CEST 2004 5140.97 Fri May 14 15:23:32 CEST 2004
9 - remove stupid gcc extension that was an experiment only anyway. 515 - remove stupid gcc extension that was an experiment only anyway.
10 516
110.96 Thu May 13 18:09:29 CEST 2004 5170.96 Thu May 13 18:09:29 CEST 2004
12 - tell people if they have yet anothe rbroken Event variant. 518 - tell people if they have yet another broken Event variant.
13 - made Coro to work _better_ with threads (it seems that, as long 519 - made Coro to work _better_ with threads (it seems that, as long
14 as you use Coros in one thread only everything will work fine. 520 as you use Coros in one thread only everything will work fine.
15 Looking at the perl source the problem might be missing locking 521 Looking at the perl source the problem might be missing locking
16 between Coro and some perl internal routines. That's not easily 522 between Coro and some perl internal routines. That's not easily
17 fixable). 523 fixable).

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