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Comparing Coro/Changes (file contents):
Revision 1.17 by root, Sat Jul 21 03:44:06 2001 UTC vs.
Revision 1.267 by root, Mon Oct 8 00:47:19 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
84.1
9 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
10 be local to each coro (see Coro::State).
11 - possibly bring back 5.10 compatibility (untested).
12 - work around stupid (and wrong) warning on 5.10 :(.
13 - overlay the saved state over the context stack. This saves
14 a few hundred bytes per coroutine on average and also
15 speeds up context switching a bit.
16 - further tune default stack sizes.
17 - (more) correctly calculate stack usage in coro_rss.
18 - Coro::Storable::blocking_* did not properly lock
19 resulting in races between coroutines.
20 - added Coro::Storable::guard.
21
224.03 Sat Oct 6 21:24:00 CEST 2007
23 - added Coro::throw method.
24 - minor code cleanups.
25
264.02 Sat Oct 6 02:36:47 CEST 2007
27 - fix a very minor per-coroutine memleak (a single codereference).
28 - fixed a bug where the currently in-use c context would be freed
29 prematurely (can happen only when programs change the stacksize
30 or use tracing).
31 - tracing can no longer keep a coro alive after it terminated.
32 - do static branch prediction in the common path for gcc. gives
33 about 2-5% speed improvement here.
34
354.01 Fri Oct 5 22:10:49 CEST 2007
36 - instead of recreating *a* standard output handle we simply
37 use STDOUT, which is faster and hopefully more robust.
38
394.0 Fri Oct 5 12:56:00 CEST 2007
40 - incompatibly changed Coro::Storable::freeze.
41 - major new feature: added Coro::Debug, for interactive coroutine
42 debugging, tracing and much more.
43 - major bug fix: unbelievable, but true: $_, $/ and many other
44 "saved" variables actually weren't being saved. This has been fixed,
45 of course, while increasing performance while losing all the save
46 flags.
47 - save flags are gone, and all the api functions dealing with them.
48 - added Coro::Semaphore::adjust.
49 - added Coro::Util::fork_eval.
50 - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}.
51 - added Coro::killall.
52 - reduce initial stack sizes to allow for "micro-coroutines".
53 - better async_pool resource management, moved parts of async_pool
54 handling to XS (major speed improvement).
55 - actually croak before modifying important data structures.
56 - refuse to transfer while compiling.
57 - possibly support eval EXPR better now.
58 - enable assembly per default on linux+bsd x86+amd64.
59 - all internal members were renamed _something for easier subclassing.
60 - many minor tweaks.
61
623.63 Wed May 16 14:10:06 CEST 2007
63 - implement handcoded assembly for x86/amd64 SVR ABI.
64
653.62 Fri Apr 27 21:36:06 CEST 2007
66 - upgrade libcoro (which might set unwind info correctly).
67 - change default on linux to setjmp/longjmp.
68
693.61 Thu Apr 19 12:36:18 CEST 2007
70 - Coro::Storable caused an endless loop when thawing invalid
71 pst's sometimes.
72 - use a Semaphore in Coro::Storable, as Storable doesn't
73 seem to be reentrant (although it is documented to
74 be threadsafe...).
75 - fix Coro::Signal to bring back the original unreliable
76 but stateful semantics.
77 - fixed a lot of typos in Coro.pm (patch submitted by David
78 Steinbrunner, which applied flawlessly).
79
803.6 Sat Apr 14 17:13:31 CEST 2007
81 - added some bugfixes to get eg/myhttpd working again.
82 - added Coro::Storable for often-cede'ing freeze/thaw.
83 - try to do a clean exit when a coroutine calls exit
84 (EXPERIMENTAL).
85 - got rid of indirect call through _coro_init.
86 - updated the partly antique examples in eg/ to
87 work again and be a bit less magic, too.
88 - fixed Coro::Signal semantics to work as documented again.
89
903.55 Sun Mar 25 01:20:47 CET 2007
91 - add SAVE_DEFFH to save the default filehandle and enable
92 it by default.
93 - finally move socket-operations from Coro::Socket to Coro::Handle
94 to be able to unblock foreign sockets.
95 - add Coro::State::save_also and guarded_save.
96 - add count accessor to Coro::Semaphore.
97 - add Coro::State::cctx_stacksize.
98 - just for the fun of it, do not rely on implicit context,
99 which can dramatically improve performance, but people
100 using windows-process-emulation perls do not care much about
101 performance.
102
1033.51 Sun Mar 4 14:18:04 CET 2007
104 - fixed a problem when you weakened references to Coro::State's
105 (patch by Yuval Kogman).
106
1073.501 Wed Feb 28 12:44:07 CET 2007
108 - rename some global symbols as macosx from hell redefines
109 them without asking.
110
1113.5 Tue Feb 13 20:22:53 CET 2007
112 - do AnyEvent model detection earlier, avoiding problems
113 caused by first using AnyEvent and later Coro::Event.
114 - implement and document Coro::Event event objects.
115 - fix a potential problem in Coro::Event causing crashes.
116 - initialise PL_comppad when creating a new coroutine,
117 avoids crashes on early coro destruction.
118
1193.41 Mon Jan 22 19:19:49 CET 2007
120 - readline on Coro::Handle did not support undefined $/,
121 nor did it deliver partial lines on EOF or error.
122 - implement malloc fallback for stack allocation because
123 stupid broken idiotic OSX has a stupid broken
124 idiotic fits-the-whole-os mmap "implementation" and
125 my dick feels longer if Coro is portable even to
126 obsolete platforms.
127
1283.4 Fri Jan 19 21:52:54 CET 2007
129 - remove t/09_timer.t, as it isn't really testing much
130 but was rather flaky in practise.
131 - async_pool coro would keep arguments and callback alive until
132 it was reused.
133 - cancellation of a coroutine could cause spurious idle calls
134 in cede_notself.
135
1363.3 Sat Jan 6 03:45:00 CET 2007
137 - implement $coro->on_destroy.
138 - Coro::Event blocking semantics have been changed,
139 documented and - hopefully - improved.
140 - fix nice adding, not subtracting, from priority.
141 - fix ->prio and api_is_ready (patch by Mark Hinds).
142 - fixed an assert ("... == prev__cctx->idle_te")
143 that could errronously trigger.
144 - fix various large and small memleaks.
145 - use a (hopefully) more stable cancel implementation
146 that immediately frees the coroutine data.
147 - cede/cede_notself return a status now.
148 - added Coro::guard function.
149 - added a global coroutine pool for jobs (on my machine,
150 I can create and execute 48k simple coros/s with async,
151 and 128k coros with async_pool).
152 - Coro::AIO now uses the coroutine priority as io priority.
153
1543.2 Fri Dec 22 05:07:09 CET 2006
155 - improve portability to slightly older perls.
156 - use cleaner coroutine destruction.
157 - simplify configuration for users.
158 - optionally (unrecommended) prefer perl functions over
159 their coro replacements.
160
1613.11 Tue Dec 5 13:11:24 CET 2006
162 - fixed some bogus assert's, but as perl.h disables assert even
163 without NDEBUG (thank you very much), not too many people should
164 notice (that did include myself). Andreas König noticed, though :)
165 - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have
166 it. Also noticed by Andreas König :)
167 - save/restore tainted status.
168 - verified to pass the testsuite on my 5.9.5.
169
1703.1 Mon Dec 4 23:03:40 CET 2006
171 - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow).
172 - incompatible change: transfer flags are now per-state.
173 - give a better error message on deadlock.
174 - document Coro::nready.
175 - enhanced testsuite.
176
1773.01 Sun Dec 3 23:47:42 CET 2006
178 - forgot to include Coro::Timer.
179
1803.0 Sun Dec 3 22:57:25 CET 2006
181 - the "FINALLY COMPLETELY STABLE" release (coming soon:
182 the "FAMOUS LAST WORDS" release).
183 - implement a new stack sharing algorithm, which uses a stack
184 pool (size currently hardcoded).
185 - make stack sharing mandatory (it no longer uses a heuristic).
186 - eval/die no longer cause weird problems under heavy use.
187 - Coro::Event could cause livelocks if it was used but
188 no Coro::Event watchers were used.
189 - Coro::Event now uses asynccheck as prepare does not
190 check for changed watchers.
191 - Coro::Event allows multiple waiting coros and will wake up one
192 per event.
193 - Coro::Event should be cleaner and more efficient now.
194 - new utility function Coro::unblock_sub.
195 - document the sad fact that Event is no longer reentrant.
196 - putting a coroutine into the ready queue twice could under
197 some circumstances lead to stack corruption.
198 - minor incompatibility: subclassing Coro::State is supported
199 directly now without going through a _coro_state member.
200 - state/coro switching is much faster now.
201 - very minor optimisations and code/documentation cleanup.
202 - avoid problems due to compiler inlining.
203 - removed timers from Coro::Timer -> use AnyEvent instead.
204 - replaced Coro::idle coroutine by (cleaner) idle handler.
205 - updated to newest libcoro.
206 - implement enhanced support for valgrind.
207 - implement is_ready and return value for ready.
208 - removed Coro::Cont, it was a misnomer (it's generators),
209 and it was somewhat annoying to get it right. Will come back
210 if somebody asks for it :)
211 - many ->wait methods and Coro::Event could return
212 spuriously without the event having happened.
213
2142.5 Tue Nov 7 12:22:33 CET 2006
215 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
216 use AnyEvent, moved them to Coro/.
217 - added Coro::LWP which contains all the uglyness required to
218 make LWP non-blocking.
219 - should work with perl 5.9.x now (Andreas König made me do it).
220 - fixed another bug in Coro::Select when the timeout was undef.
221 - reuse PL_start_env for all coros, saves some memory per coroutine.
222 - manage PL_top_env differently, hopefully to avoid panic: top_env.
223 - timeout argument was not properly used in Coro::Socket.
224 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
225 - emulate undocumented(!) functionality of IO::Socket required
226 by LWP(!!).
227 - updated eg/lwp to work with newer lwp's.
228 - remove "FATAL: uncaught exception" prefix. Coroutines that die
229 kill the whole process, just as exceptions in the main "coroutine"
230 did already.
231
2322.1 Wed Nov 1 23:01:13 CET 2006
233 - fix a long-standing bug in Coro::Select where select with
234 zero timeout would instead change the current default filehandle.
235 - use a simpler and hopefully more robust way to clone padlists
236 (uses less memory and a perl function instead of our own).
237 - coro can now create a stack guard area on many architectures.
238 - Coro::AIO properly reexports additional functions from IO::AIO.
239 - updated libcoro with a workaround for OS X,
240 pach and testing by Michael Schwern.
241
2422.0 Tue Oct 24 05:47:17 CEST 2006
243 - support additional aio requests in Coro::AIO.
244
2451.9 (never properly released due to a glitch)
246
2471.8 Thu Feb 2 00:59:06 CET 2006
248 - applied suggested patch by SAMV to avoid problems during stupid
249 mark & sweep gc run.
250 - applied patch by Scott Walters for 5.9.3 compatibility.
251
2521.7 Tue Dec 27 01:41:58 CET 2005
253 - added Coro::AIO, a thin wrapper around IO::AIO.
254 - improved Makefile.PL explanations.
255
2561.6 Mon Dec 12 21:30:05 CET 2005
257 - additionally save PM_curpm might fix as-of-yet
258 unseen problems with regex matches being attributed to the
259 wrong package.
260 - add t/10_bugs.t, which currently checks against imho broken
261 perls that use 0.26MB of stack space per Perl_magic_get
262 invocation (newer linuxes) as opposed to the 0.0002MB perl
263 normally uses.
264 - make stacksize configurable for the ultimate debian experience.
265
2661.51 Mon Dec 12 18:48:36 CET 2005
267 - remove debugging warn() accidentally left in Coro::Select.
268
2691.5 Tue Nov 29 13:32:44 CET 2005
270 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
271 - fix Coro::Select 'select'.
272 - strict'ify some modules.
273 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
274 - use XSLoader in selected modules.
275 - remove some 5.6 compatibility cruft.
276
2771.4 Tue Sep 6 00:11:05 CEST 2005
278 - libcoro did not take into account the trampoline on amd64,
279 when 'l'inux method was used.
280
2811.31 Tue Aug 30 23:31:33 CEST 2005
282 - some portability fixes/workarounds.
283
2841.3 Sat Aug 20 03:08:56 CEST 2005
285 - no code changes. module seems to work fine.
286 - improve Coro::State docs, remove reference to nonexisting
287 Coro::State::flush method.
288 - no longer autodetect windows, present it as an option instead.
289
2901.2 Mon May 16 02:00:55 CEST 2005
291 - included libcoro.c earlier in State.xs, might improve portability.
292 - use a faster and possibly more stable Coro::Cont implementation.
293 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
294 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
295 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
296
2971.11 Thu Mar 3 18:00:52 CET 2005
298 - change of contact address.
299
3001.1 Tue Feb 22 20:51:16 CET 2005
301 - support [l]inux method on amd64.
302 - allow some context switches while compiling/eval'ing.
303
3041.0 Tue Aug 10 03:47:27 CEST 2004
305 - Event 0.89 fixes the bug again.
306 - fix the remaining(??) memleak. I didn't free the cache-AV for
307 padlists, so one AV per created anon-sub leaked.
308
3090.97 Fri May 14 15:23:32 CEST 2004
310 - remove stupid gcc extension that was an experiment only anyway.
311
3120.96 Thu May 13 18:09:29 CEST 2004
313 - tell people if they have yet another broken Event variant.
314 - made Coro to work _better_ with threads (it seems that, as long
315 as you use Coros in one thread only everything will work fine.
316 Looking at the perl source the problem might be missing locking
317 between Coro and some perl internal routines. That's not easily
318 fixable).
319 - (hopefully) got rid of the static xnext inside transfer.
320
3210.95 Sun Feb 15 03:20:28 CET 2004
322 - removed Coro::State::flush, implemented a new and much
323 faster caching mechanism by attaching magic to the CV.
324 - a memleak with (real) closures remains.
325 - dramatically reduced size of stacks to 65536 (linux/x86), after
326 observing that even myhttpd never had more than a kilobyte
327 of stack in use (stack is still only physically allocated in
328 pagesize increments for systems suporting mmap).
329 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
330 - fix for threaded perl.
331
3320.9 Sun Nov 23 04:32:39 CET 2003
333 - fix a few very hard to track down but (of course) stupid
334 memory leaks.
335 - stringify version number to avoid locale problems :(.
336 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
337 hopefully ignoring it "just works".
338
3390.8 Wed Nov 5 19:38:40 CET 2003
340 - port to perl5.005_03, but only 5.8.x+ is supported!
341 - honor LocalAddr even without LocalPort in Coro::Socket.
342
3430.7 Tue May 27 03:12:38 CEST 2003
344 - the version jump indicates some level of testing, not gobs
345 of new features.
346 - uh... I found the prompt function in ExtUtils::MakeMaker.
347 Highly correct stuff, that is...
348 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
349 the fix is not well understood by the author, so beware :(.
350
3510.652 Thu May 8 02:54:46 CEST 2003
352 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
353 cause version 4 doesn't have ucontext.
354 - Benjamin Reed reported that setjmp works fine on darwin,
355 so preselect it.
356
3570.651 Sat Mar 29 15:00:23 CET 2003
358 - fix a bug in Coro::Handle where some bytes could get lost
359 on reading, reported by jason@nichego.net.
360
3610.65 Sun Mar 23 00:08:26 CET 2003
362 - added a README.linux-glibc.
363 - new module Coro::Select.
364 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
365 (I never claimed that I know what I am doing ;).
366 - set default to setjmp/longjmp on non-x86-linux.
367
3680.6 Thu Nov 21 11:09:06 CET 2002
369 - made lazy context switching the default.
370 - fixed the bug where SemaphoreSet::guard
371 was the same as timed_guard and timed_guard was missing.
372 - fix a memleak in Coro::Timer.
373 - reclassified context sharing as not experimental.
374
3750.534 Sun Apr 14 03:05:12 CEST 2002
376 - fixed backspace => tab in header parsing (myhttpd).
377 - added eg/readline, for elmex.
378 - Coro::Event now calls ->start on first call instead of
379 ->again, which created wrong timeouts for the first ->next.
380 - fixed a bug where Coro::Socket returned a closed socket instead
381 of nothing on ECONNREFUSED and similar error conditions.
382
3830.533 Mon Feb 18 18:49:40 CET 2002
384 - adapt to finally working Event-0.85.
385 - fixed buggy event initialization (trapped under windows, but how
386 could it possibly have worked anywhere?)
387
3880.532 Wed Jan 16 02:45:32 CET 2002
389 - removed the reference to pp_entersub, might work on
390 (some) win32 perls now (testsuite works under cygwin,
391 without Event, which freezes).
392
3930.531 Mon Dec 10 22:18:44 CET 2001
394 - Fixed a bug in SemaphoreSet::timed_down.
395
3960.53 Tue Nov 27 21:11:13 CET 2001
397 - some tests for Event.
398 - slightly different internal architecture to get refcnt into the object
399 and not the reference. might fix a few bugs, certainly did introduce
400 new ones.
401 - Coro::Timer (independent of Event).
402 - new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
403
4040.52 Tue Nov 6 21:36:18 CET 2001
405 - ported to cygwin (trivial).
406 patch by Gerrit P. Haase <gp@familiehaase.de>.
407 - small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
408
4090.51 Thu Nov 1 20:39:01 CET 2001
410 - terminate/cancel now work properly (otherwise termination
411 could cause a "next coroutine is not and contains not..."
412 error.
413 - added Coro::Socket::shutdown.
414 - Coro::Event::loop no is the same as Event::loop.
415 - implemented terminate with args + join.
416
4170.5 Fri Sep 28 16:15:35 CEST 2001
418 - fixed "print" on a Coro::Handle. The print method worked.
419 - small tweaks (seem to reduce memory consumption a lot)
420 in various modules.
421 - splendid use of "no warnings" scattered throughout.
422 - added Coro::Handle::rbuf, fixed Coro::Handle::fh.
423
4240.49 Sun Sep 16 02:42:45 CEST 2001
425 - changed some method calls to function calls for speed
426 inside Coro::Handle.
427 - make Coro::Handle use an array instead of a hash for
428 speed reasons.
429 - IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
430 sjlj and ucontext should now work.
431 - IRIX-specific port for libcoro.
432 - swapped order of accept results to match IO::Socket.
433 - changed getsock/peername to sock/peername to match IO::Socket.
434 - fixed a bug that caused segfault when returning to main task
435 under some circumstances.
436 - other bugfixes.
437
4380.45 Sun Sep 2 02:54:01 CEST 2001
439 - new method Coro::Handle::timeout.
440 - corrected speling of set...name to get...name in Coro::Socket.
441 - Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.
442 - Coro::Handle now supports fileno and FILENO.
443 - added eg/myhttpd, a web server.
444 - Coro::Socket now accepts numeric ports as well as "port(number)"
445 syntax.
446 - moved some scheduling primitives into xs code. more to come.
447 - new simple priority system.
448 - implemented Coro::Event using XS, almost four times faster!
449 - small memory corruption problem fixed (boy that was difficult).
450
4510.13 Wed Aug 8 16:53:07 CEST 2001
452 - new method Coro::Handle::readline.
453 - added eg/lwp and Coro::Handle::autoflush, to make LWP work.
454 (see eg/lwp on how to make LWP non-blocking).
455 - renamed Coro::Socket::new_inet to new.
456 - added Coro::Util, some utility functions.
457 - die/eval now works better (still get annoying (but true ;)
458 "Callback called exit" messages).
459 - Coro::Handle now supports timeout, and Coro::Socket Timeout.
460 - much better Coro::Socket support.
461
4620.12 Fri Jul 27 04:19:01 CEST 2001
463 - do not use mmap if neither MAP_ANON nor MAP_ANONYMOUS is defined.
464 - very experimental stack sharing algorithm. not 100% safe but
465 should work well in practise ;)
466 - added Coro::RWLock.
467 - Coro::Specific now works.
468
4690.11 Tue Jul 24 22:49:21 CEST 2001
470 - added specialized hack for newer and older linux versions (fast).
471 - renamed Coro::Event::IO to Coro::Handle.
472 - new module Coro::Socket.
473
4740.1 Tue Jul 24 01:47:53 CEST 2001
475 - release candidate 3. A rather new internal structure :(
476 - the great renaming: Damian Conway gave me a suitable replacement
477 for yield.
478 - added Coro/libcoro, a portable coroutine implementation for C
479 (not even perl-dependent!!!), which can be used by Coro::State.
480 - renamed SAVE_DEFSV (on xs-level only) to avoid symbol clash in
481 perl-5.6.
3 - new function Coro::Event::idle. 482 - new function Coro::Event::idle.
4 - the idle process is now overriden 483 - the idle process is now overriden
5 by default in Coro::Event. 484 by default in Coro::Event.
6 - Coro::Channel now enforces the size. 485 - Coro::Channel now enforces the size.
486 - canceling events now works in all cases.
487 - Coro state now include $_ and $@.
488 - yet another bug workaround that I do not really understand :(
489 - new module Coro::Event::IO (very undocumented) to do
490 non-blocking i/o.
491 - performance tuning.
7 492
80.08 Thu Jul 19 06:13:25 CEST 2001 4930.08 Thu Jul 19 06:13:25 CEST 2001
9 - release candidate 2 (new functionality). 494 - release candidate 2 (new functionality).
10 - add Coro::State::flush function. 495 - add Coro::State::flush function.
11 - transfer now supports a flags value (mostly for speed ATM). 496 - transfer now supports a flags value (mostly for speed ATM).
12 - might compile and work in the presence of threads now. 497 - might compile and work in the presence of threads now.
13 - continuations have a saner syntax. 498 - continuations have a saner syntax.
14 - memleaks down to 129 bytes / coroutine ):. 499 - no more memleaks.
15 500
160.07 Tue Jul 17 17:40:18 CEST 2001 5010.07 Tue Jul 17 17:40:18 CEST 2001
17 - release candidate 1 ;) 502 - release candidate 1 ;)
18 - slightly nicer code. 503 - slightly nicer code.
19 - fixed a scheduling bug in Coro::Event. 504 - fixed a scheduling bug in Coro::Event.

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