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Comparing Coro/Changes (file contents):
Revision 1.471 by root, Thu Dec 4 04:31:41 2008 UTC vs.
Revision 1.600 by root, Wed Oct 31 16:35:30 2012 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: should explore PerlIO::coroaio (perl leaks like hell). 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang's 4TODO: channel->maxsize(newsize)?
5 actor model (which is cool in a lot of important aspects (failures!), 5TODO: http://www.microsoft.com/msj/archive/s2ce.aspx
6 but very lacking in others (higher level ipc)). 6TODO: __GCC_HAVE_DWARF2_CFI_ASM
7 7
8TODO: CF_RUNNING makes sense only for Coros, not States 8TODO: add peerhost/peerport from IO::Socket::INET etc.
9
10 - bad things could happen in Coro::EV::timed_once if the arguments
11 were wrong. Also support magic values as timed_io_once args.
12 - recommend AnyEvent 7+ or EV 4+, also require EV
13 version 4 or newer for Coro::EV.
14
156.10 Tue Oct 9 01:14:27 CEST 2012
16 - updated ecb.h, it had a typo that caused it to not compile on many
17 big endian systems (reported by many people).
18 - disable memory fences in ecb.h to improve portability.
19
206.09 Sat Oct 6 23:25:02 CEST 2012
21 - Coro::EV I/O watchers were not interruptible by exceptions
22 (Coro::State::throw) (testcase by sten).
23 - ->throw now puts threads into the ready queue, as this seems to
24 be expected by existing code, and code that doesn't cope with spurious
25 wakeups needs fixing anyway.
26 - use fd -1 in mmap.
27 - cast I32 to int in error message printf.
28 - warn about broken so-called "hardened" kernels.
29
306.08 Fri Apr 13 12:05:47 CEST 2012
31 - be more aggressive about exiting like perl does - formerly,
32 exiting from the non-main thread would not execute END blocks.
33
346.07 Fri Nov 11 21:21:48 CET 2011
35 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
36 - update ecb.h.
37
386.06 Mon Aug 8 23:59:48 CEST 2011
39 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
40 backend, which is an order of magnitude slower. unfortunately, cygwins
41 pthread implementation isn't very complete either, so allocate the stack
42 twice just to be sure.
43 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
44 in its ithreaded perl - best recompile cygwin and use the 'w'indows
45 backend for much better performance. also disable ithreads for
46 even better performance...).
47
486.05 Thu Aug 4 21:36:36 CEST 2011
49 - blush, condvar values would not be propagated from send to recv anymore
50 (reported by Chip Salzenberg).
51 - use exponential increase for the readline buffer length in
52 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
53
546.04 Wed Aug 3 17:15:45 CEST 2011
55 - use even more efficient and more compatible condvars for
56 compatibility to AnyEvent 6.x :)
57 - more inconsequential ecb.h updates.
58
596.03 Wed Aug 3 11:41:30 CEST 2011
60 - change how Coro patches AnyEvent condvars for compatibility to
61 AnyEvent 6.x.
62 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
63 hasn't been included.
64
656.02 Wed Jul 13 04:35:19 CEST 2011
66 - "improve portability to Gentoo" - gentoo manages to put perl variables
67 in memory areas that are farther than 2gb apart, which the jit couldn't
68 handle and barfed. now it's just a bit slower on gentoo and similar
69 systems.
70
716.01 Sun Jul 3 12:31:14 CEST 2011
72 - workarounds are good, but the test for whether pthreads are used
73 was not good. thisone should be better.
74 - check differently whether gcc generates cfi instructions itself.
75
766.0 Wed Jun 29 19:43:35 CEST 2011
77 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
78 destroyed and cleaned up automatically (e.g. async { schedule }).
79 - implement a JIT compiler for part of the thread switch code,
80 which gives a 50% speed improvement on threaded perls, and
81 about 4% on non-thraeded perls (so threaded perls now finally
82 reach about half the speed of non-threaded perls).
83 - slightly modernise Coro::Intro, add section about rouse functions.
84 - avoid DEFSV and ERRSV, giving another 10% improvement
85 in thread switching.
86 - Coro::State->is_destroyed is now called is_zombie.
87 - implement a Coro->safe_cancel method that might fail, but
88 cancels in a "safer" way if it succeeds.
89 - add preliminary support for DEBUGGING perls.
90 - get rid of two hash-accesses when initialising a new Coro - this
91 speeds up coro creation by almost a factor of two.
92 - croak when a coro that is being cancelled tries to block
93 (e.g. while executing a guard block), instead of crashing or
94 deadlocking.
95 - use a more robust and also faster method to identify Coro::State
96 objects - speeds up everything a bit.
97 - implement Coro->cancel in XS for a 20% speed improvement, and to
98 be able to implement mutual cancellation.
99 - speed up context switches by a percent or two by more efficiently
100 allocating context stack entries.
101 - implement Coro->join and Coro->on_destroy in XS for a speedup and
102 a reduction in memory use.
103 - cancelling a coro while it itself is cancelling another coro is
104 now supported and working, instead of triggering an assertion.
105 - be a bit more crash-resistant when calling (buggy) on_destroy
106 callbacks (best effort).
107 - move on_destroy into the slf_frame, to allow extension slf
108 functions to have destructors.
109 - get rid if coro refcounting - simply crash in other interpreter
110 threads by nulling the pointers on clone.
111 - simplify warn/die hook handling when loading Coro - the convoluted
112 logic seems to be no longer neccessary.
113 - use libecb instead of our own home-grown gcc hacks.
114 - document alternatives to Coro::LWP. Please use them :)
115 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
116 sigaltstack. Really. wine suffers from it, erlang suffers from it,
117 and it's known since at least 2006.
118
1195.372 Wed Feb 23 06:14:30 CET 2011
120 - apparently mingw doesn't provide a working gettimeofday, try to
121 work around that by relying on Time::HiRes (indirectly brought to
122 my attention by Max Maischein).
123 - fix some portability issues when Time::HiRes was used.
124
1255.371 Mon Feb 21 14:36:08 CET 2011
126 - backport to windows process emulation code again.
127
1285.37 Sat Feb 19 07:49:44 CET 2011
129 - add a big "Coro thread life cycle" section to "man Coro".
130 - try a tentative workaround against the breakage that 5.13 has
131 introduced without depreciation period. sigh.
132 - no longer use Time::HiRes if gettimeofday is available, which
133 saves quite a lot of memory.
134
1355.36 Sun Feb 13 05:33:41 CET 2011
136 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
137 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
138 method call.
139 - undocument Coro::Timer::sleep and obsolete whole module.
140 - optimise Coro::Timer::timeout memory and cpu usage.
141 - slightly updated Coro::Intro for recent changes.
142 - do not initialise PL_dirty anymore.
143
1445.25 Thu Nov 11 01:08:39 CET 2010
145 - try a different approach on netbsd - netbsd 5 finally has marginally
146 working pthreads, but still broken ucontext/sigaltstack.
147 - openbsd 4.8 finally got their act together, Coro works out of the box
148 with asm, setjmp and pthreads (no change, just informational).
149
1505.24 Sat Oct 23 11:27:12 CEST 2010
151 - port to the EV 4.0 API.
152 - work around bugs in mingw32, making strawberry perl work
153 out of the box.
154 - correctly modify Coro::AIO function prototypes
155 so that they reflect the "no optional parameters" rule.
156 - "ported" libcoro to C++.
157
1585.23 Mon May 17 18:50:42 CEST 2010
159 - be more resistant to ordering changes when initialising
160 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
161 Waldorf).
162 - document that perl 5.12 deliberately removed support for cloning.
163
1645.22 Wed Apr 14 03:55:35 CEST 2010
165 - correctly return udnef on errors in Coro::Handle::read/write
166 (testcase by Marc Mims).
167 - convert Coro::Util into a "perl compatibility wrapper" - the functions
168 are less useful now, but are drop-in replacements for existing
169 functions, listing better alternatives in the documentation. This also
170 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
171 with Coro::Util::inet_aton.
172 - do not override $Coro::idle unconditionally in Coro.pm, as other
173 modules could have provided their own idle coro already
174 (for exmaple, Coro::AnyEvent).
175 - fix Coro::Util::gethost* functions.
176 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
177
1785.21 Wed Dec 16 07:19:51 CET 2009
179 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
180 together.
181 - add some examples on how to combine other event loops with Coro in
182 Coro::AnyEvent, and how to run it (and not to block). Seems to be
183 the most common source of confusion.
184 - try to catch people naively blocking in an event callback.
185 - work around the perl filehandle bug issue in conjunction with
186 older common::sense (as indirectly pointed out by ZSystem).
187 - clarify the "not from signal handlers" section.
188
1895.2 Sun Oct 4 14:54:24 CEST 2009
190 - Coro::Storable destroyed the prototypes of the functions it wrapped.
191 - export rouse_cb and rouse_wait by default now.
192 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
193 - new method $state->swap_sv.
194 - added section on "windows process emulation" to the manpage,
195 after a not-so-fruitful (nor-friendly) "discussion" with chip
196 salzenberg (discussion implies arguments, but his only arguments
197 were ad-hominems, one wonders why he started it in the first
198 place). I hope this explains it well enough for him to understand,
199 and maybe well enough for others to understand.
200 - use common::sense everywhere now.
201 - idle callbacks are no longer supported, use idle coros instead.
202 - print a thread listing when a deadlock is detected.
203
2045.17 Sat Aug 22 23:09:31 CEST 2009
205 - work around a bug in the perl debugger causing crashes
206 when running under the debugger by marking _pool_handler as nodebug.
207 - speed up Coro::async considerably.
208 - try some hacks to get netbsd to work "more often" - their broken
209 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
210 - convert Coro to AE 5.0 API.
211
2125.162 Tue Jul 28 04:04:03 CEST 2009
213 - perl 5.8.2 is now minimum requirement.
214 - skip t/19_handle.t on broken windows perls.
215
2165.161 Wed Jul 22 04:47:38 CEST 2009
217 - Coro::AnyEvent::poll could have a different prototype when EV was
218 used as backend (analyzed by Tatsuhiko Miyagawa).
219 - Coro::AnyEvent errornously initialised the event loop when loaded,
220 not on demand.
221 - try to workaround rare */t/01_unblock.t failures.
222
2235.16 Tue Jul 21 01:44:37 CEST 2009
224 - Coro::AnyEvent failed to hook into the event loop
225 when no threads had been readied between detecting
226 the event loop and actually running it.
227 - considerably speed up Coro::Select by taking avdantage
228 of AnyEvent > 4.8 and some other optimisations.
229 - implement paragraph readline mode in Coro::Handle
230 (based on patches by Zsbán Ambrus).
231 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
232 and analyzed by Yasuhiro MATSUMOTO).
233 - clarified libcoro license and copyright.
234 - someone stole my EXTRA_META!!!
235 - implement Coro::Select::patch_pp_sselect and it's brother,
236 for hardcode select overriding.
237
2385.151 Mon Jul 6 05:41:57 CEST 2009
239 - backport to windows process emulation code again (patch by
240 Yasuhiro MATSUMOTO).
241 - slightly update Coro::MakeMaker.
242
2435.15 Tue Jun 30 10:28:06 CEST 2009
244 - deprecate Coro::Socket, document how to get ipv6 support via
245 AnyEvent::Socket instead.
246 - implement signal->wait ($cb) interface, similar to semaphores.
247 - work around SvOK not supporting getmagic, so we have to getmagic
248 to test for undef :/ (reported by Matthias Waldorf).
249 - load Coro::AnyEvent in all modules using AnyEvent.
250 - work around perl corrupting our internal data structures,
251 reported by Tokuhiro Matsuno.
252 - enable per-coroutine real and cpu time gathering
253 (Coro::State::enable_times).
254
2555.14 Wed Jun 24 01:37:48 CEST 2009
256 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
257 as this seems to have been a difficult concept (poll, sleep, idle,
258 idle_upto).
259 - add Coro::AnyEvent::readable/writable functions.
260 - clarify Coro::EV/Event/AnyEvent manpages.
261 - free per-thread global scalars in the thread calling ->cancel, to
262 avoid crashes when $_, $@ etc., are magical but some of those
263 had already been freed.
264 - "unexperimentalise" the callback interface for Coro::Semaphore.
265 - speed up ready queue management/context switching by using a linked
266 list instead of an array (~5-10%).
267 - implement "watch" command in Coro::Debug shells.
268 - for fun, implement time-slicing as an example in the manpage.
269 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
270 Coro::Event, use the normal AnyEvent handling instead of dieing
271 (the same is true for Coro::Handle).
272 - properly document Coro::EV::timed_io_once.
273 - avoid unneccessary ->cancel calls in Coro::Handle.
274 - maybe make it work on mingw32 with win32 backend
275 (based on patch by Yasuhiro Matsumoto).
276
2775.132 Fri May 29 09:00:39 CEST 2009
278 - do not keep a reference to the argument itself in
279 Coro::Semaphore::guard, as it could change later.
280 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
281 should support a prepare callback.
282
2835.131 Mon Mar 16 23:20:37 CET 2009
284 - implement and document Coro->suspend, Coro->resume.
285 - fix Coro::Select implementation to not (often) close
286 the passed file descriptors (testcase provided by pippijn).
287
2885.13 Mon Dec 15 21:51:42 CET 2008
289 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
290 - don't set diehook to C<undef> but instead to NULL, to avoid
291 spurious warnings.
292 - fix a lot of bugs in Coro::SemaphoreSet.
293 - Coro::SemaphoreSet will less often create a semaphore needlessly.
294 - add Coro::SemaphoreSet::count and wait methods.
295 - take advantage of the new Guard module.
296 - deprecate Coro::guard.
297 - try to fix the dreaded 01_unblock tests once more. I hate it when
298 testsuites need more fixing than the code they are supposed to test.
299 - croak in more cases when a required callback isn't resolvable.
300 - fix some minor issues in Coro::State->call/eval.
301 - use current coroutine context instead of a temporary one
302 when temporarily switching to another coroutine.
303 - do not call C-level on_destroy handlers during global destruction,
304 to avoid needless segfaults.
305
3065.12 Sun Dec 7 13:30:38 CET 2008
9 - add default config for MirOS, which seems to be a bug-to-bug 307 - add default config for MirOS, which seems to be a bug-to-bug
10 compatible fork of openbsd ("world domination by releasing 308 compatible fork of openbsd ("world domination by releasing
11 openbsd cvs before the openbsd folks do it" or so :). 309 openbsd cvs before the openbsd folks do it" or so :).
12 - free_padlist did destroy the names pad, not good, but didn't 310 - free_padlist did destroy the names pad, not good, but didn't
13 seem to bother perl - this could fix issues such as eval "" 311 seem to bother perl - this could fix issues such as eval ""
14 inside a function called form multiple coroutines. 312 inside a function called from multiple coroutines.
15 - use a different method to detect destruction time. 313 - use a different method to detect destruction time.
16 - be more careful when freeing padlists just before global 314 - be more careful when freeing padlists just before global
17 destruction. 315 destruction.
18 - fixed and expanded the call/cc example. 316 - fixed and expanded the call/cc example.
19 - renamed _terminate to _coro_run. 317 - renamed _terminate to _coro_run.
318 - new method Coro::Channel->shutdown.
319 - try pthreads on openbsd <4.4 (broken sigaltstack, will
320 pthreads fare better?).
321 - be less picky about destroying "a" running coroutine.
20 322
215.11 Tue Nov 25 21:49:05 CET 2008 3235.11 Tue Nov 25 21:49:05 CET 2008
22 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly 324 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
23 working code with failed assertions, introducing more bugs than 325 working code with failed assertions, introducing more bugs than
24 it fixes, requiring elaborate workarounds :( 326 it fixes, requiring elaborate workarounds :(

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