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Comparing Coro/Changes (file contents):
Revision 1.58 by root, Tue Nov 6 20:34:09 2001 UTC vs.
Revision 1.277 by root, Fri Oct 12 18:26:13 2007 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
30.52 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
8 - add Coro::Storable::blocking_thaw.
9
104.11 Thu Oct 11 02:40:24 CEST 2007
11 - port to threaded perls.
12
134.1 Thu Oct 11 02:38:16 CEST 2007
14 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
15 be local to each coro (see Coro::State).
16 - incompatible change: for very deep reasons, cede and cede_notself
17 cannot return anything, so nothing will be returned.
18 - possibly bring back 5.10 compatibility (untested).
19 - work around stupid (and wrong) warning on 5.10 :(.
20 - overlay the saved state over the context stack. This saves
21 a few hundred bytes per coroutine on average and also
22 speeds up context switching a bit.
23 - further tune default stack sizes.
24 - (more) correctly calculate stack usage in coro_rss.
25 - Coro::Storable::blocking_* did not properly lock
26 resulting in races between coroutines.
27 - added Coro::Storable::guard.
28 - stopping to trace a coroutine could destroy the cctx of
29 an unrelated coroutine.
30 - explain the relationship between Perl and C coroutines in
31 more detail in Coro::State.
32 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
33 causing a fork per resolve. This also affected Coro::Socket.
34 - switch to a separate stack in $coro->call/eval to avoid
35 invalidating pointers.
36
374.03 Sat Oct 6 21:24:00 CEST 2007
38 - added Coro::throw method.
39 - minor code cleanups.
40
414.02 Sat Oct 6 02:36:47 CEST 2007
42 - fix a very minor per-coroutine memleak (a single codereference).
43 - fixed a bug where the currently in-use c context would be freed
44 prematurely (can happen only when programs change the stacksize
45 or use tracing).
46 - tracing can no longer keep a coro alive after it terminated.
47 - do static branch prediction in the common path for gcc. gives
48 about 2-5% speed improvement here.
49
504.01 Fri Oct 5 22:10:49 CEST 2007
51 - instead of recreating *a* standard output handle we simply
52 use STDOUT, which is faster and hopefully more robust.
53
544.0 Fri Oct 5 12:56:00 CEST 2007
55 - incompatibly changed Coro::Storable::freeze.
56 - major new feature: added Coro::Debug, for interactive coroutine
57 debugging, tracing and much more.
58 - major bug fix: unbelievable, but true: $_, $/ and many other
59 "saved" variables actually weren't being saved. This has been fixed,
60 of course, while increasing performance while losing all the save
61 flags.
62 - save flags are gone, and all the api functions dealing with them.
63 - added Coro::Semaphore::adjust.
64 - added Coro::Util::fork_eval.
65 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
66 - added Coro::killall.
67 - reduce initial stack sizes to allow for "micro-coroutines".
68 - better async_pool resource management, moved parts of async_pool
69 handling to XS (major speed improvement).
70 - actually croak before modifying important data structures.
71 - refuse to transfer while compiling.
72 - possibly support eval EXPR better now.
73 - enable assembly per default on linux+bsd x86+amd64.
74 - all internal members were renamed _something for easier subclassing.
75 - many minor tweaks.
76
773.63 Wed May 16 14:10:06 CEST 2007
78 - implement handcoded assembly for x86/amd64 SVR ABI.
79
803.62 Fri Apr 27 21:36:06 CEST 2007
81 - upgrade libcoro (which might set unwind info correctly).
82 - change default on linux to setjmp/longjmp.
83
843.61 Thu Apr 19 12:36:18 CEST 2007
85 - Coro::Storable caused an endless loop when thawing invalid
86 pst's sometimes.
87 - use a Semaphore in Coro::Storable, as Storable doesn't
88 seem to be reentrant (although it is documented to
89 be threadsafe...).
90 - fix Coro::Signal to bring back the original unreliable
91 but stateful semantics.
92 - fixed a lot of typos in Coro.pm (patch submitted by David
93 Steinbrunner, which applied flawlessly).
94
953.6 Sat Apr 14 17:13:31 CEST 2007
96 - added some bugfixes to get eg/myhttpd working again.
97 - added Coro::Storable for often-cede'ing freeze/thaw.
98 - try to do a clean exit when a coroutine calls exit
99 (EXPERIMENTAL).
100 - got rid of indirect call through _coro_init.
101 - updated the partly antique examples in eg/ to
102 work again and be a bit less magic, too.
103 - fixed Coro::Signal semantics to work as documented again.
104
1053.55 Sun Mar 25 01:20:47 CET 2007
106 - add SAVE_DEFFH to save the default filehandle and enable
107 it by default.
108 - finally move socket-operations from Coro::Socket to Coro::Handle
109 to be able to unblock foreign sockets.
110 - add Coro::State::save_also and guarded_save.
111 - add count accessor to Coro::Semaphore.
112 - add Coro::State::cctx_stacksize.
113 - just for the fun of it, do not rely on implicit context,
114 which can dramatically improve performance, but people
115 using windows-process-emulation perls do not care much about
116 performance.
117
1183.51 Sun Mar 4 14:18:04 CET 2007
119 - fixed a problem when you weakened references to Coro::State's
120 (patch by Yuval Kogman).
121
1223.501 Wed Feb 28 12:44:07 CET 2007
123 - rename some global symbols as macosx from hell redefines
124 them without asking.
125
1263.5 Tue Feb 13 20:22:53 CET 2007
127 - do AnyEvent model detection earlier, avoiding problems
128 caused by first using AnyEvent and later Coro::Event.
129 - implement and document Coro::Event event objects.
130 - fix a potential problem in Coro::Event causing crashes.
131 - initialise PL_comppad when creating a new coroutine,
132 avoids crashes on early coro destruction.
133
1343.41 Mon Jan 22 19:19:49 CET 2007
135 - readline on Coro::Handle did not support undefined $/,
136 nor did it deliver partial lines on EOF or error.
137 - implement malloc fallback for stack allocation because
138 stupid broken idiotic OSX has a stupid broken
139 idiotic fits-the-whole-os mmap "implementation" and
140 my dick feels longer if Coro is portable even to
141 obsolete platforms.
142
1433.4 Fri Jan 19 21:52:54 CET 2007
144 - remove t/09_timer.t, as it isn't really testing much
145 but was rather flaky in practise.
146 - async_pool coro would keep arguments and callback alive until
147 it was reused.
148 - cancellation of a coroutine could cause spurious idle calls
149 in cede_notself.
150
1513.3 Sat Jan 6 03:45:00 CET 2007
152 - implement $coro->on_destroy.
153 - Coro::Event blocking semantics have been changed,
154 documented and - hopefully - improved.
155 - fix nice adding, not subtracting, from priority.
156 - fix ->prio and api_is_ready (patch by Mark Hinds).
157 - fixed an assert ("... == prev__cctx->idle_te")
158 that could errronously trigger.
159 - fix various large and small memleaks.
160 - use a (hopefully) more stable cancel implementation
161 that immediately frees the coroutine data.
162 - cede/cede_notself return a status now.
163 - added Coro::guard function.
164 - added a global coroutine pool for jobs (on my machine,
165 I can create and execute 48k simple coros/s with async,
166 and 128k coros with async_pool).
167 - Coro::AIO now uses the coroutine priority as io priority.
168
1693.2 Fri Dec 22 05:07:09 CET 2006
170 - improve portability to slightly older perls.
171 - use cleaner coroutine destruction.
172 - simplify configuration for users.
173 - optionally (unrecommended) prefer perl functions over
174 their coro replacements.
175
1763.11 Tue Dec 5 13:11:24 CET 2006
177 - fixed some bogus assert's, but as perl.h disables assert even
178 without NDEBUG (thank you very much), not too many people should
179 notice (that did include myself). Andreas König noticed, though :)
180 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
181 it. Also noticed by Andreas König :)
182 - save/restore tainted status.
183 - verified to pass the testsuite on my 5.9.5.
184
1853.1 Mon Dec 4 23:03:40 CET 2006
186 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
187 - incompatible change: transfer flags are now per-state.
188 - give a better error message on deadlock.
189 - document Coro::nready.
190 - enhanced testsuite.
191
1923.01 Sun Dec 3 23:47:42 CET 2006
193 - forgot to include Coro::Timer.
194
1953.0 Sun Dec 3 22:57:25 CET 2006
196 - the "FINALLY COMPLETELY STABLE" release (coming soon:
197 the "FAMOUS LAST WORDS" release).
198 - implement a new stack sharing algorithm, which uses a stack
199 pool (size currently hardcoded).
200 - make stack sharing mandatory (it no longer uses a heuristic).
201 - eval/die no longer cause weird problems under heavy use.
202 - Coro::Event could cause livelocks if it was used but
203 no Coro::Event watchers were used.
204 - Coro::Event now uses asynccheck as prepare does not
205 check for changed watchers.
206 - Coro::Event allows multiple waiting coros and will wake up one
207 per event.
208 - Coro::Event should be cleaner and more efficient now.
209 - new utility function Coro::unblock_sub.
210 - document the sad fact that Event is no longer reentrant.
211 - putting a coroutine into the ready queue twice could under
212 some circumstances lead to stack corruption.
213 - minor incompatibility: subclassing Coro::State is supported
214 directly now without going through a _coro_state member.
215 - state/coro switching is much faster now.
216 - very minor optimisations and code/documentation cleanup.
217 - avoid problems due to compiler inlining.
218 - removed timers from Coro::Timer -> use AnyEvent instead.
219 - replaced Coro::idle coroutine by (cleaner) idle handler.
220 - updated to newest libcoro.
221 - implement enhanced support for valgrind.
222 - implement is_ready and return value for ready.
223 - removed Coro::Cont, it was a misnomer (it's generators),
224 and it was somewhat annoying to get it right. Will come back
225 if somebody asks for it :)
226 - many ->wait methods and Coro::Event could return
227 spuriously without the event having happened.
228
2292.5 Tue Nov 7 12:22:33 CET 2006
230 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
231 use AnyEvent, moved them to Coro/.
232 - added Coro::LWP which contains all the uglyness required to
233 make LWP non-blocking.
234 - should work with perl 5.9.x now (Andreas König made me do it).
235 - fixed another bug in Coro::Select when the timeout was undef.
236 - reuse PL_start_env for all coros, saves some memory per coroutine.
237 - manage PL_top_env differently, hopefully to avoid panic: top_env.
238 - timeout argument was not properly used in Coro::Socket.
239 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
240 - emulate undocumented(!) functionality of IO::Socket required
241 by LWP(!!).
242 - updated eg/lwp to work with newer lwp's.
243 - remove "FATAL: uncaught exception" prefix. Coroutines that die
244 kill the whole process, just as exceptions in the main "coroutine"
245 did already.
246
2472.1 Wed Nov 1 23:01:13 CET 2006
248 - fix a long-standing bug in Coro::Select where select with
249 zero timeout would instead change the current default filehandle.
250 - use a simpler and hopefully more robust way to clone padlists
251 (uses less memory and a perl function instead of our own).
252 - coro can now create a stack guard area on many architectures.
253 - Coro::AIO properly reexports additional functions from IO::AIO.
254 - updated libcoro with a workaround for OS X,
255 pach and testing by Michael Schwern.
256
2572.0 Tue Oct 24 05:47:17 CEST 2006
258 - support additional aio requests in Coro::AIO.
259
2601.9 (never properly released due to a glitch)
261
2621.8 Thu Feb 2 00:59:06 CET 2006
263 - applied suggested patch by SAMV to avoid problems during stupid
264 mark & sweep gc run.
265 - applied patch by Scott Walters for 5.9.3 compatibility.
266
2671.7 Tue Dec 27 01:41:58 CET 2005
268 - added Coro::AIO, a thin wrapper around IO::AIO.
269 - improved Makefile.PL explanations.
270
2711.6 Mon Dec 12 21:30:05 CET 2005
272 - additionally save PM_curpm might fix as-of-yet
273 unseen problems with regex matches being attributed to the
274 wrong package.
275 - add t/10_bugs.t, which currently checks against imho broken
276 perls that use 0.26MB of stack space per Perl_magic_get
277 invocation (newer linuxes) as opposed to the 0.0002MB perl
278 normally uses.
279 - make stacksize configurable for the ultimate debian experience.
280
2811.51 Mon Dec 12 18:48:36 CET 2005
282 - remove debugging warn() accidentally left in Coro::Select.
283
2841.5 Tue Nov 29 13:32:44 CET 2005
285 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
286 - fix Coro::Select 'select'.
287 - strict'ify some modules.
288 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
289 - use XSLoader in selected modules.
290 - remove some 5.6 compatibility cruft.
291
2921.4 Tue Sep 6 00:11:05 CEST 2005
293 - libcoro did not take into account the trampoline on amd64,
294 when 'l'inux method was used.
295
2961.31 Tue Aug 30 23:31:33 CEST 2005
297 - some portability fixes/workarounds.
298
2991.3 Sat Aug 20 03:08:56 CEST 2005
300 - no code changes. module seems to work fine.
301 - improve Coro::State docs, remove reference to nonexisting
302 Coro::State::flush method.
303 - no longer autodetect windows, present it as an option instead.
304
3051.2 Mon May 16 02:00:55 CEST 2005
306 - included libcoro.c earlier in State.xs, might improve portability.
307 - use a faster and possibly more stable Coro::Cont implementation.
308 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
309 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
310 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
311
3121.11 Thu Mar 3 18:00:52 CET 2005
313 - change of contact address.
314
3151.1 Tue Feb 22 20:51:16 CET 2005
316 - support [l]inux method on amd64.
317 - allow some context switches while compiling/eval'ing.
318
3191.0 Tue Aug 10 03:47:27 CEST 2004
320 - Event 0.89 fixes the bug again.
321 - fix the remaining(??) memleak. I didn't free the cache-AV for
322 padlists, so one AV per created anon-sub leaked.
323
3240.97 Fri May 14 15:23:32 CEST 2004
325 - remove stupid gcc extension that was an experiment only anyway.
326
3270.96 Thu May 13 18:09:29 CEST 2004
328 - tell people if they have yet another broken Event variant.
329 - made Coro to work _better_ with threads (it seems that, as long
330 as you use Coros in one thread only everything will work fine.
331 Looking at the perl source the problem might be missing locking
332 between Coro and some perl internal routines. That's not easily
333 fixable).
334 - (hopefully) got rid of the static xnext inside transfer.
335
3360.95 Sun Feb 15 03:20:28 CET 2004
337 - removed Coro::State::flush, implemented a new and much
338 faster caching mechanism by attaching magic to the CV.
339 - a memleak with (real) closures remains.
340 - dramatically reduced size of stacks to 65536 (linux/x86), after
341 observing that even myhttpd never had more than a kilobyte
342 of stack in use (stack is still only physically allocated in
343 pagesize increments for systems suporting mmap).
344 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
345 - fix for threaded perl.
346
3470.9 Sun Nov 23 04:32:39 CET 2003
348 - fix a few very hard to track down but (of course) stupid
349 memory leaks.
350 - stringify version number to avoid locale problems :(.
351 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
352 hopefully ignoring it "just works".
353
3540.8 Wed Nov 5 19:38:40 CET 2003
355 - port to perl5.005_03, but only 5.8.x+ is supported!
356 - honor LocalAddr even without LocalPort in Coro::Socket.
357
3580.7 Tue May 27 03:12:38 CEST 2003
359 - the version jump indicates some level of testing, not gobs
360 of new features.
361 - uh... I found the prompt function in ExtUtils::MakeMaker.
362 Highly correct stuff, that is...
363 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
364 the fix is not well understood by the author, so beware :(.
365
3660.652 Thu May 8 02:54:46 CEST 2003
367 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
368 cause version 4 doesn't have ucontext.
369 - Benjamin Reed reported that setjmp works fine on darwin,
370 so preselect it.
371
3720.651 Sat Mar 29 15:00:23 CET 2003
373 - fix a bug in Coro::Handle where some bytes could get lost
374 on reading, reported by jason@nichego.net.
375
3760.65 Sun Mar 23 00:08:26 CET 2003
377 - added a README.linux-glibc.
378 - new module Coro::Select.
379 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
380 (I never claimed that I know what I am doing ;).
381 - set default to setjmp/longjmp on non-x86-linux.
382
3830.6 Thu Nov 21 11:09:06 CET 2002
384 - made lazy context switching the default.
385 - fixed the bug where SemaphoreSet::guard
386 was the same as timed_guard and timed_guard was missing.
387 - fix a memleak in Coro::Timer.
388 - reclassified context sharing as not experimental.
389
3900.534 Sun Apr 14 03:05:12 CEST 2002
391 - fixed backspace => tab in header parsing (myhttpd).
392 - added eg/readline, for elmex.
393 - Coro::Event now calls ->start on first call instead of
394 ->again, which created wrong timeouts for the first ->next.
395 - fixed a bug where Coro::Socket returned a closed socket instead
396 of nothing on ECONNREFUSED and similar error conditions.
397
3980.533 Mon Feb 18 18:49:40 CET 2002
399 - adapt to finally working Event-0.85.
400 - fixed buggy event initialization (trapped under windows, but how
401 could it possibly have worked anywhere?)
402
4030.532 Wed Jan 16 02:45:32 CET 2002
404 - removed the reference to pp_entersub, might work on
405 (some) win32 perls now (testsuite works under cygwin,
406 without Event, which freezes).
407
4080.531 Mon Dec 10 22:18:44 CET 2001
409 - Fixed a bug in SemaphoreSet::timed_down.
410
4110.53 Tue Nov 27 21:11:13 CET 2001
412 - some tests for Event.
413 - slightly different internal architecture to get refcnt into the object
414 and not the reference. might fix a few bugs, certainly did introduce
415 new ones.
416 - Coro::Timer (independent of Event).
417 - new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
418
4190.52 Tue Nov 6 21:36:18 CET 2001
4 - ported to cygwin (trivial). 420 - ported to cygwin (trivial).
5 patch by Gerrit P. Haase <gp@familiehaase.de>. 421 patch by Gerrit P. Haase <gp@familiehaase.de>.
6 - small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov. 422 - small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
7 423
80.51 Thu Nov 1 20:39:01 CET 2001 4240.51 Thu Nov 1 20:39:01 CET 2001
9 - terminate/cancel now work properly (otherwise termination 425 - terminate/cancel now work properly (otherwise termination
10 could cause a "next coroutine is not and contains not..." 426 could cause a "next coroutine is not and contains not..."
11 error. 427 error.
12 - added Coro::Socket::shutdown. 428 - added Coro::Socket::shutdown.
13 - Coro::Event::loop no is the same as Event::loop. 429 - Coro::Event::loop no is the same as Event::loop.
14 - implemented terminate with args + join. 430 - implemented terminate with args + join.
15 431
160.5 Fri Sep 28 16:15:35 CEST 2001 4320.5 Fri Sep 28 16:15:35 CEST 2001
17 - fixed "print" on a Coro::Handle. The print method worked. 433 - fixed "print" on a Coro::Handle. The print method worked.
18 - small tweaks (seem to reduce memory consumption a lot) 434 - small tweaks (seem to reduce memory consumption a lot)
19 in various modules. 435 in various modules.
20 - splendid use of "no warnings" scattered throughout. 436 - splendid use of "no warnings" scattered throughout.
21 - added Coro::Handle::rbuf, fixed Coro::Handle::fh. 437 - added Coro::Handle::rbuf, fixed Coro::Handle::fh.

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