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Comparing Coro/Changes (file contents):
Revision 1.44 by root, Mon Sep 3 02:50:18 2001 UTC vs.
Revision 1.273 by root, Wed Oct 10 02:58:17 2007 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
30.49 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
84.1
9 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
10 be local to each coro (see Coro::State).
11 - introducing result types to schedule required some drastic
12 hackery, so beware.
13 - possibly bring back 5.10 compatibility (untested).
14 - work around stupid (and wrong) warning on 5.10 :(.
15 - overlay the saved state over the context stack. This saves
16 a few hundred bytes per coroutine on average and also
17 speeds up context switching a bit.
18 - further tune default stack sizes.
19 - (more) correctly calculate stack usage in coro_rss.
20 - Coro::Storable::blocking_* did not properly lock
21 resulting in races between coroutines.
22 - added Coro::Storable::guard.
23 - stopping to trace a coroutine could destroy the cctx of
24 an unrelated coroutine.
25 - explain the relationship between Perl and C coroutines in
26 more detail in Coro::State.
27 - Coro::Util::inet_aton did not short-circuit dotted quad forms,
28 causing a fork per resolve. This also affected Coro::Socket.
29 - sped up Coro::Event next event handling by 15%, uses less memory.
30 - switch to a separate stack in $coro->call/eval to avoid
31 invalidating pointers.
32 - cede/cede_notself should now correctly return their status.
33
344.03 Sat Oct 6 21:24:00 CEST 2007
35 - added Coro::throw method.
36 - minor code cleanups.
37
384.02 Sat Oct 6 02:36:47 CEST 2007
39 - fix a very minor per-coroutine memleak (a single codereference).
40 - fixed a bug where the currently in-use c context would be freed
41 prematurely (can happen only when programs change the stacksize
42 or use tracing).
43 - tracing can no longer keep a coro alive after it terminated.
44 - do static branch prediction in the common path for gcc. gives
45 about 2-5% speed improvement here.
46
474.01 Fri Oct 5 22:10:49 CEST 2007
48 - instead of recreating *a* standard output handle we simply
49 use STDOUT, which is faster and hopefully more robust.
50
514.0 Fri Oct 5 12:56:00 CEST 2007
52 - incompatibly changed Coro::Storable::freeze.
53 - major new feature: added Coro::Debug, for interactive coroutine
54 debugging, tracing and much more.
55 - major bug fix: unbelievable, but true: $_, $/ and many other
56 "saved" variables actually weren't being saved. This has been fixed,
57 of course, while increasing performance while losing all the save
58 flags.
59 - save flags are gone, and all the api functions dealing with them.
60 - added Coro::Semaphore::adjust.
61 - added Coro::Util::fork_eval.
62 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
63 - added Coro::killall.
64 - reduce initial stack sizes to allow for "micro-coroutines".
65 - better async_pool resource management, moved parts of async_pool
66 handling to XS (major speed improvement).
67 - actually croak before modifying important data structures.
68 - refuse to transfer while compiling.
69 - possibly support eval EXPR better now.
70 - enable assembly per default on linux+bsd x86+amd64.
71 - all internal members were renamed _something for easier subclassing.
72 - many minor tweaks.
73
743.63 Wed May 16 14:10:06 CEST 2007
75 - implement handcoded assembly for x86/amd64 SVR ABI.
76
773.62 Fri Apr 27 21:36:06 CEST 2007
78 - upgrade libcoro (which might set unwind info correctly).
79 - change default on linux to setjmp/longjmp.
80
813.61 Thu Apr 19 12:36:18 CEST 2007
82 - Coro::Storable caused an endless loop when thawing invalid
83 pst's sometimes.
84 - use a Semaphore in Coro::Storable, as Storable doesn't
85 seem to be reentrant (although it is documented to
86 be threadsafe...).
87 - fix Coro::Signal to bring back the original unreliable
88 but stateful semantics.
89 - fixed a lot of typos in Coro.pm (patch submitted by David
90 Steinbrunner, which applied flawlessly).
91
923.6 Sat Apr 14 17:13:31 CEST 2007
93 - added some bugfixes to get eg/myhttpd working again.
94 - added Coro::Storable for often-cede'ing freeze/thaw.
95 - try to do a clean exit when a coroutine calls exit
96 (EXPERIMENTAL).
97 - got rid of indirect call through _coro_init.
98 - updated the partly antique examples in eg/ to
99 work again and be a bit less magic, too.
100 - fixed Coro::Signal semantics to work as documented again.
101
1023.55 Sun Mar 25 01:20:47 CET 2007
103 - add SAVE_DEFFH to save the default filehandle and enable
104 it by default.
105 - finally move socket-operations from Coro::Socket to Coro::Handle
106 to be able to unblock foreign sockets.
107 - add Coro::State::save_also and guarded_save.
108 - add count accessor to Coro::Semaphore.
109 - add Coro::State::cctx_stacksize.
110 - just for the fun of it, do not rely on implicit context,
111 which can dramatically improve performance, but people
112 using windows-process-emulation perls do not care much about
113 performance.
114
1153.51 Sun Mar 4 14:18:04 CET 2007
116 - fixed a problem when you weakened references to Coro::State's
117 (patch by Yuval Kogman).
118
1193.501 Wed Feb 28 12:44:07 CET 2007
120 - rename some global symbols as macosx from hell redefines
121 them without asking.
122
1233.5 Tue Feb 13 20:22:53 CET 2007
124 - do AnyEvent model detection earlier, avoiding problems
125 caused by first using AnyEvent and later Coro::Event.
126 - implement and document Coro::Event event objects.
127 - fix a potential problem in Coro::Event causing crashes.
128 - initialise PL_comppad when creating a new coroutine,
129 avoids crashes on early coro destruction.
130
1313.41 Mon Jan 22 19:19:49 CET 2007
132 - readline on Coro::Handle did not support undefined $/,
133 nor did it deliver partial lines on EOF or error.
134 - implement malloc fallback for stack allocation because
135 stupid broken idiotic OSX has a stupid broken
136 idiotic fits-the-whole-os mmap "implementation" and
137 my dick feels longer if Coro is portable even to
138 obsolete platforms.
139
1403.4 Fri Jan 19 21:52:54 CET 2007
141 - remove t/09_timer.t, as it isn't really testing much
142 but was rather flaky in practise.
143 - async_pool coro would keep arguments and callback alive until
144 it was reused.
145 - cancellation of a coroutine could cause spurious idle calls
146 in cede_notself.
147
1483.3 Sat Jan 6 03:45:00 CET 2007
149 - implement $coro->on_destroy.
150 - Coro::Event blocking semantics have been changed,
151 documented and - hopefully - improved.
152 - fix nice adding, not subtracting, from priority.
153 - fix ->prio and api_is_ready (patch by Mark Hinds).
154 - fixed an assert ("... == prev__cctx->idle_te")
155 that could errronously trigger.
156 - fix various large and small memleaks.
157 - use a (hopefully) more stable cancel implementation
158 that immediately frees the coroutine data.
159 - cede/cede_notself return a status now.
160 - added Coro::guard function.
161 - added a global coroutine pool for jobs (on my machine,
162 I can create and execute 48k simple coros/s with async,
163 and 128k coros with async_pool).
164 - Coro::AIO now uses the coroutine priority as io priority.
165
1663.2 Fri Dec 22 05:07:09 CET 2006
167 - improve portability to slightly older perls.
168 - use cleaner coroutine destruction.
169 - simplify configuration for users.
170 - optionally (unrecommended) prefer perl functions over
171 their coro replacements.
172
1733.11 Tue Dec 5 13:11:24 CET 2006
174 - fixed some bogus assert's, but as perl.h disables assert even
175 without NDEBUG (thank you very much), not too many people should
176 notice (that did include myself). Andreas König noticed, though :)
177 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
178 it. Also noticed by Andreas König :)
179 - save/restore tainted status.
180 - verified to pass the testsuite on my 5.9.5.
181
1823.1 Mon Dec 4 23:03:40 CET 2006
183 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
184 - incompatible change: transfer flags are now per-state.
185 - give a better error message on deadlock.
186 - document Coro::nready.
187 - enhanced testsuite.
188
1893.01 Sun Dec 3 23:47:42 CET 2006
190 - forgot to include Coro::Timer.
191
1923.0 Sun Dec 3 22:57:25 CET 2006
193 - the "FINALLY COMPLETELY STABLE" release (coming soon:
194 the "FAMOUS LAST WORDS" release).
195 - implement a new stack sharing algorithm, which uses a stack
196 pool (size currently hardcoded).
197 - make stack sharing mandatory (it no longer uses a heuristic).
198 - eval/die no longer cause weird problems under heavy use.
199 - Coro::Event could cause livelocks if it was used but
200 no Coro::Event watchers were used.
201 - Coro::Event now uses asynccheck as prepare does not
202 check for changed watchers.
203 - Coro::Event allows multiple waiting coros and will wake up one
204 per event.
205 - Coro::Event should be cleaner and more efficient now.
206 - new utility function Coro::unblock_sub.
207 - document the sad fact that Event is no longer reentrant.
208 - putting a coroutine into the ready queue twice could under
209 some circumstances lead to stack corruption.
210 - minor incompatibility: subclassing Coro::State is supported
211 directly now without going through a _coro_state member.
212 - state/coro switching is much faster now.
213 - very minor optimisations and code/documentation cleanup.
214 - avoid problems due to compiler inlining.
215 - removed timers from Coro::Timer -> use AnyEvent instead.
216 - replaced Coro::idle coroutine by (cleaner) idle handler.
217 - updated to newest libcoro.
218 - implement enhanced support for valgrind.
219 - implement is_ready and return value for ready.
220 - removed Coro::Cont, it was a misnomer (it's generators),
221 and it was somewhat annoying to get it right. Will come back
222 if somebody asks for it :)
223 - many ->wait methods and Coro::Event could return
224 spuriously without the event having happened.
225
2262.5 Tue Nov 7 12:22:33 CET 2006
227 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
228 use AnyEvent, moved them to Coro/.
229 - added Coro::LWP which contains all the uglyness required to
230 make LWP non-blocking.
231 - should work with perl 5.9.x now (Andreas König made me do it).
232 - fixed another bug in Coro::Select when the timeout was undef.
233 - reuse PL_start_env for all coros, saves some memory per coroutine.
234 - manage PL_top_env differently, hopefully to avoid panic: top_env.
235 - timeout argument was not properly used in Coro::Socket.
236 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
237 - emulate undocumented(!) functionality of IO::Socket required
238 by LWP(!!).
239 - updated eg/lwp to work with newer lwp's.
240 - remove "FATAL: uncaught exception" prefix. Coroutines that die
241 kill the whole process, just as exceptions in the main "coroutine"
242 did already.
243
2442.1 Wed Nov 1 23:01:13 CET 2006
245 - fix a long-standing bug in Coro::Select where select with
246 zero timeout would instead change the current default filehandle.
247 - use a simpler and hopefully more robust way to clone padlists
248 (uses less memory and a perl function instead of our own).
249 - coro can now create a stack guard area on many architectures.
250 - Coro::AIO properly reexports additional functions from IO::AIO.
251 - updated libcoro with a workaround for OS X,
252 pach and testing by Michael Schwern.
253
2542.0 Tue Oct 24 05:47:17 CEST 2006
255 - support additional aio requests in Coro::AIO.
256
2571.9 (never properly released due to a glitch)
258
2591.8 Thu Feb 2 00:59:06 CET 2006
260 - applied suggested patch by SAMV to avoid problems during stupid
261 mark & sweep gc run.
262 - applied patch by Scott Walters for 5.9.3 compatibility.
263
2641.7 Tue Dec 27 01:41:58 CET 2005
265 - added Coro::AIO, a thin wrapper around IO::AIO.
266 - improved Makefile.PL explanations.
267
2681.6 Mon Dec 12 21:30:05 CET 2005
269 - additionally save PM_curpm might fix as-of-yet
270 unseen problems with regex matches being attributed to the
271 wrong package.
272 - add t/10_bugs.t, which currently checks against imho broken
273 perls that use 0.26MB of stack space per Perl_magic_get
274 invocation (newer linuxes) as opposed to the 0.0002MB perl
275 normally uses.
276 - make stacksize configurable for the ultimate debian experience.
277
2781.51 Mon Dec 12 18:48:36 CET 2005
279 - remove debugging warn() accidentally left in Coro::Select.
280
2811.5 Tue Nov 29 13:32:44 CET 2005
282 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
283 - fix Coro::Select 'select'.
284 - strict'ify some modules.
285 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
286 - use XSLoader in selected modules.
287 - remove some 5.6 compatibility cruft.
288
2891.4 Tue Sep 6 00:11:05 CEST 2005
290 - libcoro did not take into account the trampoline on amd64,
291 when 'l'inux method was used.
292
2931.31 Tue Aug 30 23:31:33 CEST 2005
294 - some portability fixes/workarounds.
295
2961.3 Sat Aug 20 03:08:56 CEST 2005
297 - no code changes. module seems to work fine.
298 - improve Coro::State docs, remove reference to nonexisting
299 Coro::State::flush method.
300 - no longer autodetect windows, present it as an option instead.
301
3021.2 Mon May 16 02:00:55 CEST 2005
303 - included libcoro.c earlier in State.xs, might improve portability.
304 - use a faster and possibly more stable Coro::Cont implementation.
305 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
306 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
307 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
308
3091.11 Thu Mar 3 18:00:52 CET 2005
310 - change of contact address.
311
3121.1 Tue Feb 22 20:51:16 CET 2005
313 - support [l]inux method on amd64.
314 - allow some context switches while compiling/eval'ing.
315
3161.0 Tue Aug 10 03:47:27 CEST 2004
317 - Event 0.89 fixes the bug again.
318 - fix the remaining(??) memleak. I didn't free the cache-AV for
319 padlists, so one AV per created anon-sub leaked.
320
3210.97 Fri May 14 15:23:32 CEST 2004
322 - remove stupid gcc extension that was an experiment only anyway.
323
3240.96 Thu May 13 18:09:29 CEST 2004
325 - tell people if they have yet another broken Event variant.
326 - made Coro to work _better_ with threads (it seems that, as long
327 as you use Coros in one thread only everything will work fine.
328 Looking at the perl source the problem might be missing locking
329 between Coro and some perl internal routines. That's not easily
330 fixable).
331 - (hopefully) got rid of the static xnext inside transfer.
332
3330.95 Sun Feb 15 03:20:28 CET 2004
334 - removed Coro::State::flush, implemented a new and much
335 faster caching mechanism by attaching magic to the CV.
336 - a memleak with (real) closures remains.
337 - dramatically reduced size of stacks to 65536 (linux/x86), after
338 observing that even myhttpd never had more than a kilobyte
339 of stack in use (stack is still only physically allocated in
340 pagesize increments for systems suporting mmap).
341 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
342 - fix for threaded perl.
343
3440.9 Sun Nov 23 04:32:39 CET 2003
345 - fix a few very hard to track down but (of course) stupid
346 memory leaks.
347 - stringify version number to avoid locale problems :(.
348 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
349 hopefully ignoring it "just works".
350
3510.8 Wed Nov 5 19:38:40 CET 2003
352 - port to perl5.005_03, but only 5.8.x+ is supported!
353 - honor LocalAddr even without LocalPort in Coro::Socket.
354
3550.7 Tue May 27 03:12:38 CEST 2003
356 - the version jump indicates some level of testing, not gobs
357 of new features.
358 - uh... I found the prompt function in ExtUtils::MakeMaker.
359 Highly correct stuff, that is...
360 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
361 the fix is not well understood by the author, so beware :(.
362
3630.652 Thu May 8 02:54:46 CEST 2003
364 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
365 cause version 4 doesn't have ucontext.
366 - Benjamin Reed reported that setjmp works fine on darwin,
367 so preselect it.
368
3690.651 Sat Mar 29 15:00:23 CET 2003
370 - fix a bug in Coro::Handle where some bytes could get lost
371 on reading, reported by jason@nichego.net.
372
3730.65 Sun Mar 23 00:08:26 CET 2003
374 - added a README.linux-glibc.
375 - new module Coro::Select.
376 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
377 (I never claimed that I know what I am doing ;).
378 - set default to setjmp/longjmp on non-x86-linux.
379
3800.6 Thu Nov 21 11:09:06 CET 2002
381 - made lazy context switching the default.
382 - fixed the bug where SemaphoreSet::guard
383 was the same as timed_guard and timed_guard was missing.
384 - fix a memleak in Coro::Timer.
385 - reclassified context sharing as not experimental.
386
3870.534 Sun Apr 14 03:05:12 CEST 2002
388 - fixed backspace => tab in header parsing (myhttpd).
389 - added eg/readline, for elmex.
390 - Coro::Event now calls ->start on first call instead of
391 ->again, which created wrong timeouts for the first ->next.
392 - fixed a bug where Coro::Socket returned a closed socket instead
393 of nothing on ECONNREFUSED and similar error conditions.
394
3950.533 Mon Feb 18 18:49:40 CET 2002
396 - adapt to finally working Event-0.85.
397 - fixed buggy event initialization (trapped under windows, but how
398 could it possibly have worked anywhere?)
399
4000.532 Wed Jan 16 02:45:32 CET 2002
401 - removed the reference to pp_entersub, might work on
402 (some) win32 perls now (testsuite works under cygwin,
403 without Event, which freezes).
404
4050.531 Mon Dec 10 22:18:44 CET 2001
406 - Fixed a bug in SemaphoreSet::timed_down.
407
4080.53 Tue Nov 27 21:11:13 CET 2001
409 - some tests for Event.
410 - slightly different internal architecture to get refcnt into the object
411 and not the reference. might fix a few bugs, certainly did introduce
412 new ones.
413 - Coro::Timer (independent of Event).
414 - new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
415
4160.52 Tue Nov 6 21:36:18 CET 2001
417 - ported to cygwin (trivial).
418 patch by Gerrit P. Haase <gp@familiehaase.de>.
419 - small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
420
4210.51 Thu Nov 1 20:39:01 CET 2001
422 - terminate/cancel now work properly (otherwise termination
423 could cause a "next coroutine is not and contains not..."
424 error.
425 - added Coro::Socket::shutdown.
426 - Coro::Event::loop no is the same as Event::loop.
427 - implemented terminate with args + join.
428
4290.5 Fri Sep 28 16:15:35 CEST 2001
430 - fixed "print" on a Coro::Handle. The print method worked.
431 - small tweaks (seem to reduce memory consumption a lot)
432 in various modules.
433 - splendid use of "no warnings" scattered throughout.
434 - added Coro::Handle::rbuf, fixed Coro::Handle::fh.
435
4360.49 Sun Sep 16 02:42:45 CEST 2001
4 - changed some method calls to function calls for speed 437 - changed some method calls to function calls for speed
5 inside Coro::Handle. 438 inside Coro::Handle.
6 - make Coro::Handle use an array instead of a hash for 439 - make Coro::Handle use an array instead of a hash for
7 speed reasons. 440 speed reasons.
8 - IRIX mystery solved: it's SGI's NT, after all: "standard, huh?". 441 - IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
9 sjlj and ucontext should now work. 442 sjlj and ucontext should now work.
10 - IRIX-specific port for libcoro. 443 - IRIX-specific port for libcoro.
444 - swapped order of accept results to match IO::Socket.
445 - changed getsock/peername to sock/peername to match IO::Socket.
446 - fixed a bug that caused segfault when returning to main task
447 under some circumstances.
448 - other bugfixes.
11 449
120.45 Sun Sep 2 02:54:01 CEST 2001 4500.45 Sun Sep 2 02:54:01 CEST 2001
13 - new method Coro::Handle::timeout. 451 - new method Coro::Handle::timeout.
14 - corrected speling of set...name to get...name in Coro::Socket. 452 - corrected speling of set...name to get...name in Coro::Socket.
15 - Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle. 453 - Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.

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