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Comparing Coro/Changes (file contents):
Revision 1.65 by root, Mon Dec 31 20:41:44 2001 UTC vs.
Revision 1.305 by root, Mon Dec 17 07:36:37 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
84.33 Mon Dec 17 08:36:12 CET 2007
9 - make Coro::AIO etc. loadable in the absence of EV.
10
114.32 Mon Dec 17 07:46:02 CET 2007
12 - majorly improved Coro::Handle's performance with Coro::EV.
13 - implemented the until now mythical Coro::BDB module.
14 - specialcase EV in Coro::AIO and Coro::BDB for extra speed.
15
164.31 Wed Dec 5 12:32:39 CET 2007
17 - remove warn statement form Coro::Util.
18
194.3 Tue Dec 4 20:33:14 CET 2007
20 - calls to the idle function could cause stack corruption
21 when the stack changed.
22 - do no longer rely on the presence of EV::DNS if EV is used
23 (because it is gone), but instead take avdantage of EV::ADNS
24 if available.
25 - add ($) prototypes to all functions in Coro::Storable.
26 - use a conventional (safer) idle callback in Coro::EV.
27 - do accept quickly in Coro::Debug to avoid endless loops.
28
294.22 Fri Nov 30 16:04:04 CET 2007
30 - really use optimised versions for Event and EV in Coro::Util
31 and Coro::Handle.
32
334.21 Sun Nov 25 10:48:59 CET 2007
34 - fix a spurious memory read.
35 - Coro::EV no longer keeps the eventloop "alive".
36
374.2 Fri Nov 9 20:47:05 CET 2007
38 - enable/disable tracing from a new coroutine, not a pooled one.
39 - fix a memleak in Coro::Event.
40 - removed killall call from fork_eval.
41 - made sure store_fd is already loaded so that fork_eval
42 does not have to parse autoload in each subprocess.
43 - only use assembly method if -O switch is in $Config{optimize}.
44 - add (optional) Coro::EV module, so far the best event loop module
45 directly supported by Coro.
46 - if the event model is EV, use EV::DNS to resolve
47 stuff in Coro::Util.
48 - don't get confused by multiple event notifications in Coro::Handle.
49 - initial support for EV (libevent interface).
50 - require Event and EV using configure_requires, to force their existance.
51
524.13 Wed Oct 24 07:26:45 CEST 2007
53 - add Coro::Storable::blocking_thaw.
54 - use a vastly more complicated technique to localise
55 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
56 - use a coroutine for the idle callback Coro::Event,
57 instead of running Event in the current coroutine context.
58 This also catches recursive invocations.
59 - actually report fork errors in gethostbyname and inet_aton.
60
614.11 Thu Oct 11 02:40:24 CEST 2007
62 - port to threaded perls.
63
644.1 Thu Oct 11 02:38:16 CEST 2007
65 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
66 be local to each coro (see Coro::State).
67 - incompatible change: for very deep reasons, cede and cede_notself
68 cannot return anything, so nothing will be returned.
69 - possibly bring back 5.10 compatibility (untested).
70 - work around stupid (and wrong) warning on 5.10 :(.
71 - overlay the saved state over the context stack. This saves
72 a few hundred bytes per coroutine on average and also
73 speeds up context switching a bit.
74 - further tune default stack sizes.
75 - (more) correctly calculate stack usage in coro_rss.
76 - Coro::Storable::blocking_* did not properly lock
77 resulting in races between coroutines.
78 - added Coro::Storable::guard.
79 - stopping to trace a coroutine could destroy the cctx of
80 an unrelated coroutine.
81 - explain the relationship between Perl and C coroutines in
82 more detail in Coro::State.
83 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
84 causing a fork per resolve. This also affected Coro::Socket.
85 - switch to a separate stack in $coro->call/eval to avoid
86 invalidating pointers.
87
884.03 Sat Oct 6 21:24:00 CEST 2007
89 - added Coro::throw method.
90 - minor code cleanups.
91
924.02 Sat Oct 6 02:36:47 CEST 2007
93 - fix a very minor per-coroutine memleak (a single codereference).
94 - fixed a bug where the currently in-use c context would be freed
95 prematurely (can happen only when programs change the stacksize
96 or use tracing).
97 - tracing can no longer keep a coro alive after it terminated.
98 - do static branch prediction in the common path for gcc. gives
99 about 2-5% speed improvement here.
100
1014.01 Fri Oct 5 22:10:49 CEST 2007
102 - instead of recreating *a* standard output handle we simply
103 use STDOUT, which is faster and hopefully more robust.
104
1054.0 Fri Oct 5 12:56:00 CEST 2007
106 - incompatibly changed Coro::Storable::freeze.
107 - major new feature: added Coro::Debug, for interactive coroutine
108 debugging, tracing and much more.
109 - major bug fix: unbelievable, but true: $_, $/ and many other
110 "saved" variables actually weren't being saved. This has been fixed,
111 of course, while increasing performance while losing all the save
112 flags.
113 - save flags are gone, and all the api functions dealing with them.
114 - added Coro::Semaphore::adjust.
115 - added Coro::Util::fork_eval.
116 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
117 - added Coro::killall.
118 - reduce initial stack sizes to allow for "micro-coroutines".
119 - better async_pool resource management, moved parts of async_pool
120 handling to XS (major speed improvement).
121 - actually croak before modifying important data structures.
122 - refuse to transfer while compiling.
123 - possibly support eval EXPR better now.
124 - enable assembly per default on linux+bsd x86+amd64.
125 - all internal members were renamed _something for easier subclassing.
126 - many minor tweaks.
127
1283.63 Wed May 16 14:10:06 CEST 2007
129 - implement handcoded assembly for x86/amd64 SVR ABI.
130
1313.62 Fri Apr 27 21:36:06 CEST 2007
132 - upgrade libcoro (which might set unwind info correctly).
133 - change default on linux to setjmp/longjmp.
134
1353.61 Thu Apr 19 12:36:18 CEST 2007
136 - Coro::Storable caused an endless loop when thawing invalid
137 pst's sometimes.
138 - use a Semaphore in Coro::Storable, as Storable doesn't
139 seem to be reentrant (although it is documented to
140 be threadsafe...).
141 - fix Coro::Signal to bring back the original unreliable
142 but stateful semantics.
143 - fixed a lot of typos in Coro.pm (patch submitted by David
144 Steinbrunner, which applied flawlessly).
145
1463.6 Sat Apr 14 17:13:31 CEST 2007
147 - added some bugfixes to get eg/myhttpd working again.
148 - added Coro::Storable for often-cede'ing freeze/thaw.
149 - try to do a clean exit when a coroutine calls exit
150 (EXPERIMENTAL).
151 - got rid of indirect call through _coro_init.
152 - updated the partly antique examples in eg/ to
153 work again and be a bit less magic, too.
154 - fixed Coro::Signal semantics to work as documented again.
155
1563.55 Sun Mar 25 01:20:47 CET 2007
157 - add SAVE_DEFFH to save the default filehandle and enable
158 it by default.
159 - finally move socket-operations from Coro::Socket to Coro::Handle
160 to be able to unblock foreign sockets.
161 - add Coro::State::save_also and guarded_save.
162 - add count accessor to Coro::Semaphore.
163 - add Coro::State::cctx_stacksize.
164 - just for the fun of it, do not rely on implicit context,
165 which can dramatically improve performance, but people
166 using windows-process-emulation perls do not care much about
167 performance.
168
1693.51 Sun Mar 4 14:18:04 CET 2007
170 - fixed a problem when you weakened references to Coro::State's
171 (patch by Yuval Kogman).
172
1733.501 Wed Feb 28 12:44:07 CET 2007
174 - rename some global symbols as macosx from hell redefines
175 them without asking.
176
1773.5 Tue Feb 13 20:22:53 CET 2007
178 - do AnyEvent model detection earlier, avoiding problems
179 caused by first using AnyEvent and later Coro::Event.
180 - implement and document Coro::Event event objects.
181 - fix a potential problem in Coro::Event causing crashes.
182 - initialise PL_comppad when creating a new coroutine,
183 avoids crashes on early coro destruction.
184
1853.41 Mon Jan 22 19:19:49 CET 2007
186 - readline on Coro::Handle did not support undefined $/,
187 nor did it deliver partial lines on EOF or error.
188 - implement malloc fallback for stack allocation because
189 stupid broken idiotic OSX has a stupid broken
190 idiotic fits-the-whole-os mmap "implementation" and
191 my dick feels longer if Coro is portable even to
192 obsolete platforms.
193
1943.4 Fri Jan 19 21:52:54 CET 2007
195 - remove t/09_timer.t, as it isn't really testing much
196 but was rather flaky in practise.
197 - async_pool coro would keep arguments and callback alive until
198 it was reused.
199 - cancellation of a coroutine could cause spurious idle calls
200 in cede_notself.
201
2023.3 Sat Jan 6 03:45:00 CET 2007
203 - implement $coro->on_destroy.
204 - Coro::Event blocking semantics have been changed,
205 documented and - hopefully - improved.
206 - fix nice adding, not subtracting, from priority.
207 - fix ->prio and api_is_ready (patch by Mark Hinds).
208 - fixed an assert ("... == prev__cctx->idle_te")
209 that could errronously trigger.
210 - fix various large and small memleaks.
211 - use a (hopefully) more stable cancel implementation
212 that immediately frees the coroutine data.
213 - cede/cede_notself return a status now.
214 - added Coro::guard function.
215 - added a global coroutine pool for jobs (on my machine,
216 I can create and execute 48k simple coros/s with async,
217 and 128k coros with async_pool).
218 - Coro::AIO now uses the coroutine priority as io priority.
219
2203.2 Fri Dec 22 05:07:09 CET 2006
221 - improve portability to slightly older perls.
222 - use cleaner coroutine destruction.
223 - simplify configuration for users.
224 - optionally (unrecommended) prefer perl functions over
225 their coro replacements.
226
2273.11 Tue Dec 5 13:11:24 CET 2006
228 - fixed some bogus assert's, but as perl.h disables assert even
229 without NDEBUG (thank you very much), not too many people should
230 notice (that did include myself). Andreas König noticed, though :)
231 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
232 it. Also noticed by Andreas König :)
233 - save/restore tainted status.
234 - verified to pass the testsuite on my 5.9.5.
235
2363.1 Mon Dec 4 23:03:40 CET 2006
237 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
238 - incompatible change: transfer flags are now per-state.
239 - give a better error message on deadlock.
240 - document Coro::nready.
241 - enhanced testsuite.
242
2433.01 Sun Dec 3 23:47:42 CET 2006
244 - forgot to include Coro::Timer.
245
2463.0 Sun Dec 3 22:57:25 CET 2006
247 - the "FINALLY COMPLETELY STABLE" release (coming soon:
248 the "FAMOUS LAST WORDS" release).
249 - implement a new stack sharing algorithm, which uses a stack
250 pool (size currently hardcoded).
251 - make stack sharing mandatory (it no longer uses a heuristic).
252 - eval/die no longer cause weird problems under heavy use.
253 - Coro::Event could cause livelocks if it was used but
254 no Coro::Event watchers were used.
255 - Coro::Event now uses asynccheck as prepare does not
256 check for changed watchers.
257 - Coro::Event allows multiple waiting coros and will wake up one
258 per event.
259 - Coro::Event should be cleaner and more efficient now.
260 - new utility function Coro::unblock_sub.
261 - document the sad fact that Event is no longer reentrant.
262 - putting a coroutine into the ready queue twice could under
263 some circumstances lead to stack corruption.
264 - minor incompatibility: subclassing Coro::State is supported
265 directly now without going through a _coro_state member.
266 - state/coro switching is much faster now.
267 - very minor optimisations and code/documentation cleanup.
268 - avoid problems due to compiler inlining.
269 - removed timers from Coro::Timer -> use AnyEvent instead.
270 - replaced Coro::idle coroutine by (cleaner) idle handler.
271 - updated to newest libcoro.
272 - implement enhanced support for valgrind.
273 - implement is_ready and return value for ready.
274 - removed Coro::Cont, it was a misnomer (it's generators),
275 and it was somewhat annoying to get it right. Will come back
276 if somebody asks for it :)
277 - many ->wait methods and Coro::Event could return
278 spuriously without the event having happened.
279
2802.5 Tue Nov 7 12:22:33 CET 2006
281 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
282 use AnyEvent, moved them to Coro/.
283 - added Coro::LWP which contains all the uglyness required to
284 make LWP non-blocking.
285 - should work with perl 5.9.x now (Andreas König made me do it).
286 - fixed another bug in Coro::Select when the timeout was undef.
287 - reuse PL_start_env for all coros, saves some memory per coroutine.
288 - manage PL_top_env differently, hopefully to avoid panic: top_env.
289 - timeout argument was not properly used in Coro::Socket.
290 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
291 - emulate undocumented(!) functionality of IO::Socket required
292 by LWP(!!).
293 - updated eg/lwp to work with newer lwp's.
294 - remove "FATAL: uncaught exception" prefix. Coroutines that die
295 kill the whole process, just as exceptions in the main "coroutine"
296 did already.
297
2982.1 Wed Nov 1 23:01:13 CET 2006
299 - fix a long-standing bug in Coro::Select where select with
300 zero timeout would instead change the current default filehandle.
301 - use a simpler and hopefully more robust way to clone padlists
302 (uses less memory and a perl function instead of our own).
303 - coro can now create a stack guard area on many architectures.
304 - Coro::AIO properly reexports additional functions from IO::AIO.
305 - updated libcoro with a workaround for OS X,
306 pach and testing by Michael Schwern.
307
3082.0 Tue Oct 24 05:47:17 CEST 2006
309 - support additional aio requests in Coro::AIO.
310
3111.9 (never properly released due to a glitch)
312
3131.8 Thu Feb 2 00:59:06 CET 2006
314 - applied suggested patch by SAMV to avoid problems during stupid
315 mark & sweep gc run.
316 - applied patch by Scott Walters for 5.9.3 compatibility.
317
3181.7 Tue Dec 27 01:41:58 CET 2005
319 - added Coro::AIO, a thin wrapper around IO::AIO.
320 - improved Makefile.PL explanations.
321
3221.6 Mon Dec 12 21:30:05 CET 2005
323 - additionally save PM_curpm might fix as-of-yet
324 unseen problems with regex matches being attributed to the
325 wrong package.
326 - add t/10_bugs.t, which currently checks against imho broken
327 perls that use 0.26MB of stack space per Perl_magic_get
328 invocation (newer linuxes) as opposed to the 0.0002MB perl
329 normally uses.
330 - make stacksize configurable for the ultimate debian experience.
331
3321.51 Mon Dec 12 18:48:36 CET 2005
333 - remove debugging warn() accidentally left in Coro::Select.
334
3351.5 Tue Nov 29 13:32:44 CET 2005
336 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
337 - fix Coro::Select 'select'.
338 - strict'ify some modules.
339 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
340 - use XSLoader in selected modules.
341 - remove some 5.6 compatibility cruft.
342
3431.4 Tue Sep 6 00:11:05 CEST 2005
344 - libcoro did not take into account the trampoline on amd64,
345 when 'l'inux method was used.
346
3471.31 Tue Aug 30 23:31:33 CEST 2005
348 - some portability fixes/workarounds.
349
3501.3 Sat Aug 20 03:08:56 CEST 2005
351 - no code changes. module seems to work fine.
352 - improve Coro::State docs, remove reference to nonexisting
353 Coro::State::flush method.
354 - no longer autodetect windows, present it as an option instead.
355
3561.2 Mon May 16 02:00:55 CEST 2005
357 - included libcoro.c earlier in State.xs, might improve portability.
358 - use a faster and possibly more stable Coro::Cont implementation.
359 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
360 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
361 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
362
3631.11 Thu Mar 3 18:00:52 CET 2005
364 - change of contact address.
365
3661.1 Tue Feb 22 20:51:16 CET 2005
367 - support [l]inux method on amd64.
368 - allow some context switches while compiling/eval'ing.
369
3701.0 Tue Aug 10 03:47:27 CEST 2004
371 - Event 0.89 fixes the bug again.
372 - fix the remaining(??) memleak. I didn't free the cache-AV for
373 padlists, so one AV per created anon-sub leaked.
374
3750.97 Fri May 14 15:23:32 CEST 2004
376 - remove stupid gcc extension that was an experiment only anyway.
377
3780.96 Thu May 13 18:09:29 CEST 2004
379 - tell people if they have yet another broken Event variant.
380 - made Coro to work _better_ with threads (it seems that, as long
381 as you use Coros in one thread only everything will work fine.
382 Looking at the perl source the problem might be missing locking
383 between Coro and some perl internal routines. That's not easily
384 fixable).
385 - (hopefully) got rid of the static xnext inside transfer.
386
3870.95 Sun Feb 15 03:20:28 CET 2004
388 - removed Coro::State::flush, implemented a new and much
389 faster caching mechanism by attaching magic to the CV.
390 - a memleak with (real) closures remains.
391 - dramatically reduced size of stacks to 65536 (linux/x86), after
392 observing that even myhttpd never had more than a kilobyte
393 of stack in use (stack is still only physically allocated in
394 pagesize increments for systems suporting mmap).
395 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
396 - fix for threaded perl.
397
3980.9 Sun Nov 23 04:32:39 CET 2003
399 - fix a few very hard to track down but (of course) stupid
400 memory leaks.
401 - stringify version number to avoid locale problems :(.
402 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
403 hopefully ignoring it "just works".
404
4050.8 Wed Nov 5 19:38:40 CET 2003
406 - port to perl5.005_03, but only 5.8.x+ is supported!
407 - honor LocalAddr even without LocalPort in Coro::Socket.
408
4090.7 Tue May 27 03:12:38 CEST 2003
410 - the version jump indicates some level of testing, not gobs
411 of new features.
412 - uh... I found the prompt function in ExtUtils::MakeMaker.
413 Highly correct stuff, that is...
414 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
415 the fix is not well understood by the author, so beware :(.
416
4170.652 Thu May 8 02:54:46 CEST 2003
418 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
419 cause version 4 doesn't have ucontext.
420 - Benjamin Reed reported that setjmp works fine on darwin,
421 so preselect it.
422
4230.651 Sat Mar 29 15:00:23 CET 2003
424 - fix a bug in Coro::Handle where some bytes could get lost
425 on reading, reported by jason@nichego.net.
426
4270.65 Sun Mar 23 00:08:26 CET 2003
428 - added a README.linux-glibc.
429 - new module Coro::Select.
430 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
431 (I never claimed that I know what I am doing ;).
432 - set default to setjmp/longjmp on non-x86-linux.
433
4340.6 Thu Nov 21 11:09:06 CET 2002
435 - made lazy context switching the default.
436 - fixed the bug where SemaphoreSet::guard
437 was the same as timed_guard and timed_guard was missing.
438 - fix a memleak in Coro::Timer.
439 - reclassified context sharing as not experimental.
440
4410.534 Sun Apr 14 03:05:12 CEST 2002
442 - fixed backspace => tab in header parsing (myhttpd).
443 - added eg/readline, for elmex.
444 - Coro::Event now calls ->start on first call instead of
445 ->again, which created wrong timeouts for the first ->next.
446 - fixed a bug where Coro::Socket returned a closed socket instead
447 of nothing on ECONNREFUSED and similar error conditions.
448
4490.533 Mon Feb 18 18:49:40 CET 2002
450 - adapt to finally working Event-0.85.
451 - fixed buggy event initialization (trapped under windows, but how
452 could it possibly have worked anywhere?)
453
4540.532 Wed Jan 16 02:45:32 CET 2002
3 - removed the reference to pp_entersub, might compile on 455 - removed the reference to pp_entersub, might work on
4 (some) win32 perls now. 456 (some) win32 perls now (testsuite works under cygwin,
457 without Event, which freezes).
5 458
60.531 Mon Dec 10 22:18:44 CET 2001 4590.531 Mon Dec 10 22:18:44 CET 2001
7 - Fixed a bug in SemaphoreSet::timed_down. 460 - Fixed a bug in SemaphoreSet::timed_down.
8 461
90.53 Tue Nov 27 21:11:13 CET 2001 4620.53 Tue Nov 27 21:11:13 CET 2001

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