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Comparing Coro/Changes (file contents):
Revision 1.42 by root, Sun Sep 2 00:54:51 2001 UTC vs.
Revision 1.279 by root, Fri Oct 19 05:52:41 2007 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
5 (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)).
7
84.13
9 - add Coro::Storable::blocking_thaw.
10 - use a vastly more complicated technique to localise
11 $SIG{__WARN/DIE__} that also works on perls <= 5.8.8.
12 - use a coroutine for the idle callback Coro::Event,
13 instead of running Event in the current coroutine context.
14 This also catches recursive invocations.
15
164.11 Thu Oct 11 02:40:24 CEST 2007
17 - port to threaded perls.
18
194.1 Thu Oct 11 02:38:16 CEST 2007
20 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
21 be local to each coro (see Coro::State).
22 - incompatible change: for very deep reasons, cede and cede_notself
23 cannot return anything, so nothing will be returned.
24 - possibly bring back 5.10 compatibility (untested).
25 - work around stupid (and wrong) warning on 5.10 :(.
26 - overlay the saved state over the context stack. This saves
27 a few hundred bytes per coroutine on average and also
28 speeds up context switching a bit.
29 - further tune default stack sizes.
30 - (more) correctly calculate stack usage in coro_rss.
31 - Coro::Storable::blocking_* did not properly lock
32 resulting in races between coroutines.
33 - added Coro::Storable::guard.
34 - stopping to trace a coroutine could destroy the cctx of
35 an unrelated coroutine.
36 - explain the relationship between Perl and C coroutines in
37 more detail in Coro::State.
38 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
39 causing a fork per resolve. This also affected Coro::Socket.
40 - switch to a separate stack in $coro->call/eval to avoid
41 invalidating pointers.
42
434.03 Sat Oct 6 21:24:00 CEST 2007
44 - added Coro::throw method.
45 - minor code cleanups.
46
474.02 Sat Oct 6 02:36:47 CEST 2007
48 - fix a very minor per-coroutine memleak (a single codereference).
49 - fixed a bug where the currently in-use c context would be freed
50 prematurely (can happen only when programs change the stacksize
51 or use tracing).
52 - tracing can no longer keep a coro alive after it terminated.
53 - do static branch prediction in the common path for gcc. gives
54 about 2-5% speed improvement here.
55
564.01 Fri Oct 5 22:10:49 CEST 2007
57 - instead of recreating *a* standard output handle we simply
58 use STDOUT, which is faster and hopefully more robust.
59
604.0 Fri Oct 5 12:56:00 CEST 2007
61 - incompatibly changed Coro::Storable::freeze.
62 - major new feature: added Coro::Debug, for interactive coroutine
63 debugging, tracing and much more.
64 - major bug fix: unbelievable, but true: $_, $/ and many other
65 "saved" variables actually weren't being saved. This has been fixed,
66 of course, while increasing performance while losing all the save
67 flags.
68 - save flags are gone, and all the api functions dealing with them.
69 - added Coro::Semaphore::adjust.
70 - added Coro::Util::fork_eval.
71 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
72 - added Coro::killall.
73 - reduce initial stack sizes to allow for "micro-coroutines".
74 - better async_pool resource management, moved parts of async_pool
75 handling to XS (major speed improvement).
76 - actually croak before modifying important data structures.
77 - refuse to transfer while compiling.
78 - possibly support eval EXPR better now.
79 - enable assembly per default on linux+bsd x86+amd64.
80 - all internal members were renamed _something for easier subclassing.
81 - many minor tweaks.
82
833.63 Wed May 16 14:10:06 CEST 2007
84 - implement handcoded assembly for x86/amd64 SVR ABI.
85
863.62 Fri Apr 27 21:36:06 CEST 2007
87 - upgrade libcoro (which might set unwind info correctly).
88 - change default on linux to setjmp/longjmp.
89
903.61 Thu Apr 19 12:36:18 CEST 2007
91 - Coro::Storable caused an endless loop when thawing invalid
92 pst's sometimes.
93 - use a Semaphore in Coro::Storable, as Storable doesn't
94 seem to be reentrant (although it is documented to
95 be threadsafe...).
96 - fix Coro::Signal to bring back the original unreliable
97 but stateful semantics.
98 - fixed a lot of typos in Coro.pm (patch submitted by David
99 Steinbrunner, which applied flawlessly).
100
1013.6 Sat Apr 14 17:13:31 CEST 2007
102 - added some bugfixes to get eg/myhttpd working again.
103 - added Coro::Storable for often-cede'ing freeze/thaw.
104 - try to do a clean exit when a coroutine calls exit
105 (EXPERIMENTAL).
106 - got rid of indirect call through _coro_init.
107 - updated the partly antique examples in eg/ to
108 work again and be a bit less magic, too.
109 - fixed Coro::Signal semantics to work as documented again.
110
1113.55 Sun Mar 25 01:20:47 CET 2007
112 - add SAVE_DEFFH to save the default filehandle and enable
113 it by default.
114 - finally move socket-operations from Coro::Socket to Coro::Handle
115 to be able to unblock foreign sockets.
116 - add Coro::State::save_also and guarded_save.
117 - add count accessor to Coro::Semaphore.
118 - add Coro::State::cctx_stacksize.
119 - just for the fun of it, do not rely on implicit context,
120 which can dramatically improve performance, but people
121 using windows-process-emulation perls do not care much about
122 performance.
123
1243.51 Sun Mar 4 14:18:04 CET 2007
125 - fixed a problem when you weakened references to Coro::State's
126 (patch by Yuval Kogman).
127
1283.501 Wed Feb 28 12:44:07 CET 2007
129 - rename some global symbols as macosx from hell redefines
130 them without asking.
131
1323.5 Tue Feb 13 20:22:53 CET 2007
133 - do AnyEvent model detection earlier, avoiding problems
134 caused by first using AnyEvent and later Coro::Event.
135 - implement and document Coro::Event event objects.
136 - fix a potential problem in Coro::Event causing crashes.
137 - initialise PL_comppad when creating a new coroutine,
138 avoids crashes on early coro destruction.
139
1403.41 Mon Jan 22 19:19:49 CET 2007
141 - readline on Coro::Handle did not support undefined $/,
142 nor did it deliver partial lines on EOF or error.
143 - implement malloc fallback for stack allocation because
144 stupid broken idiotic OSX has a stupid broken
145 idiotic fits-the-whole-os mmap "implementation" and
146 my dick feels longer if Coro is portable even to
147 obsolete platforms.
148
1493.4 Fri Jan 19 21:52:54 CET 2007
150 - remove t/09_timer.t, as it isn't really testing much
151 but was rather flaky in practise.
152 - async_pool coro would keep arguments and callback alive until
153 it was reused.
154 - cancellation of a coroutine could cause spurious idle calls
155 in cede_notself.
156
1573.3 Sat Jan 6 03:45:00 CET 2007
158 - implement $coro->on_destroy.
159 - Coro::Event blocking semantics have been changed,
160 documented and - hopefully - improved.
161 - fix nice adding, not subtracting, from priority.
162 - fix ->prio and api_is_ready (patch by Mark Hinds).
163 - fixed an assert ("... == prev__cctx->idle_te")
164 that could errronously trigger.
165 - fix various large and small memleaks.
166 - use a (hopefully) more stable cancel implementation
167 that immediately frees the coroutine data.
168 - cede/cede_notself return a status now.
169 - added Coro::guard function.
170 - added a global coroutine pool for jobs (on my machine,
171 I can create and execute 48k simple coros/s with async,
172 and 128k coros with async_pool).
173 - Coro::AIO now uses the coroutine priority as io priority.
174
1753.2 Fri Dec 22 05:07:09 CET 2006
176 - improve portability to slightly older perls.
177 - use cleaner coroutine destruction.
178 - simplify configuration for users.
179 - optionally (unrecommended) prefer perl functions over
180 their coro replacements.
181
1823.11 Tue Dec 5 13:11:24 CET 2006
183 - fixed some bogus assert's, but as perl.h disables assert even
184 without NDEBUG (thank you very much), not too many people should
185 notice (that did include myself). Andreas König noticed, though :)
186 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
187 it. Also noticed by Andreas König :)
188 - save/restore tainted status.
189 - verified to pass the testsuite on my 5.9.5.
190
1913.1 Mon Dec 4 23:03:40 CET 2006
192 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
193 - incompatible change: transfer flags are now per-state.
194 - give a better error message on deadlock.
195 - document Coro::nready.
196 - enhanced testsuite.
197
1983.01 Sun Dec 3 23:47:42 CET 2006
199 - forgot to include Coro::Timer.
200
2013.0 Sun Dec 3 22:57:25 CET 2006
202 - the "FINALLY COMPLETELY STABLE" release (coming soon:
203 the "FAMOUS LAST WORDS" release).
204 - implement a new stack sharing algorithm, which uses a stack
205 pool (size currently hardcoded).
206 - make stack sharing mandatory (it no longer uses a heuristic).
207 - eval/die no longer cause weird problems under heavy use.
208 - Coro::Event could cause livelocks if it was used but
209 no Coro::Event watchers were used.
210 - Coro::Event now uses asynccheck as prepare does not
211 check for changed watchers.
212 - Coro::Event allows multiple waiting coros and will wake up one
213 per event.
214 - Coro::Event should be cleaner and more efficient now.
215 - new utility function Coro::unblock_sub.
216 - document the sad fact that Event is no longer reentrant.
217 - putting a coroutine into the ready queue twice could under
218 some circumstances lead to stack corruption.
219 - minor incompatibility: subclassing Coro::State is supported
220 directly now without going through a _coro_state member.
221 - state/coro switching is much faster now.
222 - very minor optimisations and code/documentation cleanup.
223 - avoid problems due to compiler inlining.
224 - removed timers from Coro::Timer -> use AnyEvent instead.
225 - replaced Coro::idle coroutine by (cleaner) idle handler.
226 - updated to newest libcoro.
227 - implement enhanced support for valgrind.
228 - implement is_ready and return value for ready.
229 - removed Coro::Cont, it was a misnomer (it's generators),
230 and it was somewhat annoying to get it right. Will come back
231 if somebody asks for it :)
232 - many ->wait methods and Coro::Event could return
233 spuriously without the event having happened.
234
2352.5 Tue Nov 7 12:22:33 CET 2006
236 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
237 use AnyEvent, moved them to Coro/.
238 - added Coro::LWP which contains all the uglyness required to
239 make LWP non-blocking.
240 - should work with perl 5.9.x now (Andreas König made me do it).
241 - fixed another bug in Coro::Select when the timeout was undef.
242 - reuse PL_start_env for all coros, saves some memory per coroutine.
243 - manage PL_top_env differently, hopefully to avoid panic: top_env.
244 - timeout argument was not properly used in Coro::Socket.
245 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
246 - emulate undocumented(!) functionality of IO::Socket required
247 by LWP(!!).
248 - updated eg/lwp to work with newer lwp's.
249 - remove "FATAL: uncaught exception" prefix. Coroutines that die
250 kill the whole process, just as exceptions in the main "coroutine"
251 did already.
252
2532.1 Wed Nov 1 23:01:13 CET 2006
254 - fix a long-standing bug in Coro::Select where select with
255 zero timeout would instead change the current default filehandle.
256 - use a simpler and hopefully more robust way to clone padlists
257 (uses less memory and a perl function instead of our own).
258 - coro can now create a stack guard area on many architectures.
259 - Coro::AIO properly reexports additional functions from IO::AIO.
260 - updated libcoro with a workaround for OS X,
261 pach and testing by Michael Schwern.
262
2632.0 Tue Oct 24 05:47:17 CEST 2006
264 - support additional aio requests in Coro::AIO.
265
2661.9 (never properly released due to a glitch)
267
2681.8 Thu Feb 2 00:59:06 CET 2006
269 - applied suggested patch by SAMV to avoid problems during stupid
270 mark & sweep gc run.
271 - applied patch by Scott Walters for 5.9.3 compatibility.
272
2731.7 Tue Dec 27 01:41:58 CET 2005
274 - added Coro::AIO, a thin wrapper around IO::AIO.
275 - improved Makefile.PL explanations.
276
2771.6 Mon Dec 12 21:30:05 CET 2005
278 - additionally save PM_curpm might fix as-of-yet
279 unseen problems with regex matches being attributed to the
280 wrong package.
281 - add t/10_bugs.t, which currently checks against imho broken
282 perls that use 0.26MB of stack space per Perl_magic_get
283 invocation (newer linuxes) as opposed to the 0.0002MB perl
284 normally uses.
285 - make stacksize configurable for the ultimate debian experience.
286
2871.51 Mon Dec 12 18:48:36 CET 2005
288 - remove debugging warn() accidentally left in Coro::Select.
289
2901.5 Tue Nov 29 13:32:44 CET 2005
291 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
292 - fix Coro::Select 'select'.
293 - strict'ify some modules.
294 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
295 - use XSLoader in selected modules.
296 - remove some 5.6 compatibility cruft.
297
2981.4 Tue Sep 6 00:11:05 CEST 2005
299 - libcoro did not take into account the trampoline on amd64,
300 when 'l'inux method was used.
301
3021.31 Tue Aug 30 23:31:33 CEST 2005
303 - some portability fixes/workarounds.
304
3051.3 Sat Aug 20 03:08:56 CEST 2005
306 - no code changes. module seems to work fine.
307 - improve Coro::State docs, remove reference to nonexisting
308 Coro::State::flush method.
309 - no longer autodetect windows, present it as an option instead.
310
3111.2 Mon May 16 02:00:55 CEST 2005
312 - included libcoro.c earlier in State.xs, might improve portability.
313 - use a faster and possibly more stable Coro::Cont implementation.
314 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
315 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
316 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
317
3181.11 Thu Mar 3 18:00:52 CET 2005
319 - change of contact address.
320
3211.1 Tue Feb 22 20:51:16 CET 2005
322 - support [l]inux method on amd64.
323 - allow some context switches while compiling/eval'ing.
324
3251.0 Tue Aug 10 03:47:27 CEST 2004
326 - Event 0.89 fixes the bug again.
327 - fix the remaining(??) memleak. I didn't free the cache-AV for
328 padlists, so one AV per created anon-sub leaked.
329
3300.97 Fri May 14 15:23:32 CEST 2004
331 - remove stupid gcc extension that was an experiment only anyway.
332
3330.96 Thu May 13 18:09:29 CEST 2004
334 - tell people if they have yet another broken Event variant.
335 - made Coro to work _better_ with threads (it seems that, as long
336 as you use Coros in one thread only everything will work fine.
337 Looking at the perl source the problem might be missing locking
338 between Coro and some perl internal routines. That's not easily
339 fixable).
340 - (hopefully) got rid of the static xnext inside transfer.
341
3420.95 Sun Feb 15 03:20:28 CET 2004
343 - removed Coro::State::flush, implemented a new and much
344 faster caching mechanism by attaching magic to the CV.
345 - a memleak with (real) closures remains.
346 - dramatically reduced size of stacks to 65536 (linux/x86), after
347 observing that even myhttpd never had more than a kilobyte
348 of stack in use (stack is still only physically allocated in
349 pagesize increments for systems suporting mmap).
350 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
351 - fix for threaded perl.
352
3530.9 Sun Nov 23 04:32:39 CET 2003
354 - fix a few very hard to track down but (of course) stupid
355 memory leaks.
356 - stringify version number to avoid locale problems :(.
357 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
358 hopefully ignoring it "just works".
359
3600.8 Wed Nov 5 19:38:40 CET 2003
361 - port to perl5.005_03, but only 5.8.x+ is supported!
362 - honor LocalAddr even without LocalPort in Coro::Socket.
363
3640.7 Tue May 27 03:12:38 CEST 2003
365 - the version jump indicates some level of testing, not gobs
366 of new features.
367 - uh... I found the prompt function in ExtUtils::MakeMaker.
368 Highly correct stuff, that is...
369 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
370 the fix is not well understood by the author, so beware :(.
371
3720.652 Thu May 8 02:54:46 CEST 2003
373 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
374 cause version 4 doesn't have ucontext.
375 - Benjamin Reed reported that setjmp works fine on darwin,
376 so preselect it.
377
3780.651 Sat Mar 29 15:00:23 CET 2003
379 - fix a bug in Coro::Handle where some bytes could get lost
380 on reading, reported by jason@nichego.net.
381
3820.65 Sun Mar 23 00:08:26 CET 2003
383 - added a README.linux-glibc.
384 - new module Coro::Select.
385 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
386 (I never claimed that I know what I am doing ;).
387 - set default to setjmp/longjmp on non-x86-linux.
388
3890.6 Thu Nov 21 11:09:06 CET 2002
390 - made lazy context switching the default.
391 - fixed the bug where SemaphoreSet::guard
392 was the same as timed_guard and timed_guard was missing.
393 - fix a memleak in Coro::Timer.
394 - reclassified context sharing as not experimental.
395
3960.534 Sun Apr 14 03:05:12 CEST 2002
397 - fixed backspace => tab in header parsing (myhttpd).
398 - added eg/readline, for elmex.
399 - Coro::Event now calls ->start on first call instead of
400 ->again, which created wrong timeouts for the first ->next.
401 - fixed a bug where Coro::Socket returned a closed socket instead
402 of nothing on ECONNREFUSED and similar error conditions.
403
4040.533 Mon Feb 18 18:49:40 CET 2002
405 - adapt to finally working Event-0.85.
406 - fixed buggy event initialization (trapped under windows, but how
407 could it possibly have worked anywhere?)
408
4090.532 Wed Jan 16 02:45:32 CET 2002
410 - removed the reference to pp_entersub, might work on
411 (some) win32 perls now (testsuite works under cygwin,
412 without Event, which freezes).
413
4140.531 Mon Dec 10 22:18:44 CET 2001
415 - Fixed a bug in SemaphoreSet::timed_down.
416
4170.53 Tue Nov 27 21:11:13 CET 2001
418 - some tests for Event.
419 - slightly different internal architecture to get refcnt into the object
420 and not the reference. might fix a few bugs, certainly did introduce
421 new ones.
422 - Coro::Timer (independent of Event).
423 - new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
424
4250.52 Tue Nov 6 21:36:18 CET 2001
426 - ported to cygwin (trivial).
427 patch by Gerrit P. Haase <gp@familiehaase.de>.
428 - small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
429
4300.51 Thu Nov 1 20:39:01 CET 2001
431 - terminate/cancel now work properly (otherwise termination
432 could cause a "next coroutine is not and contains not..."
433 error.
434 - added Coro::Socket::shutdown.
435 - Coro::Event::loop no is the same as Event::loop.
436 - implemented terminate with args + join.
437
4380.5 Fri Sep 28 16:15:35 CEST 2001
439 - fixed "print" on a Coro::Handle. The print method worked.
440 - small tweaks (seem to reduce memory consumption a lot)
441 in various modules.
442 - splendid use of "no warnings" scattered throughout.
443 - added Coro::Handle::rbuf, fixed Coro::Handle::fh.
444
4450.49 Sun Sep 16 02:42:45 CEST 2001
446 - changed some method calls to function calls for speed
447 inside Coro::Handle.
448 - make Coro::Handle use an array instead of a hash for
449 speed reasons.
450 - IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
451 sjlj and ucontext should now work.
452 - IRIX-specific port for libcoro.
453 - swapped order of accept results to match IO::Socket.
454 - changed getsock/peername to sock/peername to match IO::Socket.
455 - fixed a bug that caused segfault when returning to main task
456 under some circumstances.
457 - other bugfixes.
2 458
30.45 Sun Sep 2 02:54:01 CEST 2001 4590.45 Sun Sep 2 02:54:01 CEST 2001
4 - new method Coro::Handle::timeout. 460 - new method Coro::Handle::timeout.
5 - corrected speling of set...name to get...name in Coro::Socket. 461 - corrected speling of set...name to get...name in Coro::Socket.
6 - Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle. 462 - Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.

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