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Comparing Coro/Changes (file contents):
Revision 1.473 by root, Thu Dec 4 17:29:40 2008 UTC vs.
Revision 1.605 by root, Fri Dec 7 20:27:54 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
85.12 8TODO: add peerhost/peerport from IO::Socket::INET etc.
9
10 - use experimental fiber implementation on native windows
11 perls.
12 - use sizeof (void *) as multiplication factor for stack sizes,
13 to accomodate the totally braindamaged microsoft 64 bit "os".
14 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
15 activeperl 5.16 crashes when PerlIO_define_layer is called due
16 to some bug in the perl dll, strawberry perl at least passes
17 the testsuite.
18 - implement 5.17 compatibility by almost blindly applying a
19 good-looking patch by Father Chrysostomos.
20 - move stack management functions into libcoro 3.
21 - libcoro version 3 "released".
22 - support magic values as timed_io_once args.
23 - recommend AnyEvent 7+ or EV 4+, also require EV
24 version 4 or newer for Coro::EV.
25
266.10 Tue Oct 9 01:14:27 CEST 2012
27 - updated ecb.h, it had a typo that caused it to not compile on many
28 big endian systems (reported by many people).
29 - disable memory fences in ecb.h to improve portability.
30
316.09 Sat Oct 6 23:25:02 CEST 2012
32 - Coro::EV I/O watchers were not interruptible by exceptions
33 (Coro::State::throw) (testcase by sten).
34 - ->throw now puts threads into the ready queue, as this seems to
35 be expected by existing code, and code that doesn't cope with spurious
36 wakeups needs fixing anyway.
37 - use fd -1 in mmap.
38 - cast I32 to int in error message printf.
39 - warn about broken so-called "hardened" kernels.
40
416.08 Fri Apr 13 12:05:47 CEST 2012
42 - be more aggressive about exiting like perl does - formerly,
43 exiting from the non-main thread would not execute END blocks.
44
456.07 Fri Nov 11 21:21:48 CET 2011
46 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
47 - update ecb.h.
48
496.06 Mon Aug 8 23:59:48 CEST 2011
50 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
51 backend, which is an order of magnitude slower. unfortunately, cygwins
52 pthread implementation isn't very complete either, so allocate the stack
53 twice just to be sure.
54 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
55 in its ithreaded perl - best recompile cygwin and use the 'w'indows
56 backend for much better performance. also disable ithreads for
57 even better performance...).
58
596.05 Thu Aug 4 21:36:36 CEST 2011
60 - blush, condvar values would not be propagated from send to recv anymore
61 (reported by Chip Salzenberg).
62 - use exponential increase for the readline buffer length in
63 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
64
656.04 Wed Aug 3 17:15:45 CEST 2011
66 - use even more efficient and more compatible condvars for
67 compatibility to AnyEvent 6.x :)
68 - more inconsequential ecb.h updates.
69
706.03 Wed Aug 3 11:41:30 CEST 2011
71 - change how Coro patches AnyEvent condvars for compatibility to
72 AnyEvent 6.x.
73 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
74 hasn't been included.
75
766.02 Wed Jul 13 04:35:19 CEST 2011
77 - "improve portability to Gentoo" - gentoo manages to put perl variables
78 in memory areas that are farther than 2gb apart, which the jit couldn't
79 handle and barfed. now it's just a bit slower on gentoo and similar
80 systems.
81
826.01 Sun Jul 3 12:31:14 CEST 2011
83 - workarounds are good, but the test for whether pthreads are used
84 was not good. thisone should be better.
85 - check differently whether gcc generates cfi instructions itself.
86
876.0 Wed Jun 29 19:43:35 CEST 2011
88 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
89 destroyed and cleaned up automatically (e.g. async { schedule }).
90 - implement a JIT compiler for part of the thread switch code,
91 which gives a 50% speed improvement on threaded perls, and
92 about 4% on non-thraeded perls (so threaded perls now finally
93 reach about half the speed of non-threaded perls).
94 - slightly modernise Coro::Intro, add section about rouse functions.
95 - avoid DEFSV and ERRSV, giving another 10% improvement
96 in thread switching.
97 - Coro::State->is_destroyed is now called is_zombie.
98 - implement a Coro->safe_cancel method that might fail, but
99 cancels in a "safer" way if it succeeds.
100 - add preliminary support for DEBUGGING perls.
101 - get rid of two hash-accesses when initialising a new Coro - this
102 speeds up coro creation by almost a factor of two.
103 - croak when a coro that is being cancelled tries to block
104 (e.g. while executing a guard block), instead of crashing or
105 deadlocking.
106 - use a more robust and also faster method to identify Coro::State
107 objects - speeds up everything a bit.
108 - implement Coro->cancel in XS for a 20% speed improvement, and to
109 be able to implement mutual cancellation.
110 - speed up context switches by a percent or two by more efficiently
111 allocating context stack entries.
112 - implement Coro->join and Coro->on_destroy in XS for a speedup and
113 a reduction in memory use.
114 - cancelling a coro while it itself is cancelling another coro is
115 now supported and working, instead of triggering an assertion.
116 - be a bit more crash-resistant when calling (buggy) on_destroy
117 callbacks (best effort).
118 - move on_destroy into the slf_frame, to allow extension slf
119 functions to have destructors.
120 - get rid if coro refcounting - simply crash in other interpreter
121 threads by nulling the pointers on clone.
122 - simplify warn/die hook handling when loading Coro - the convoluted
123 logic seems to be no longer neccessary.
124 - use libecb instead of our own home-grown gcc hacks.
125 - document alternatives to Coro::LWP. Please use them :)
126 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
127 sigaltstack. Really. wine suffers from it, erlang suffers from it,
128 and it's known since at least 2006.
129
1305.372 Wed Feb 23 06:14:30 CET 2011
131 - apparently mingw doesn't provide a working gettimeofday, try to
132 work around that by relying on Time::HiRes (indirectly brought to
133 my attention by Max Maischein).
134 - fix some portability issues when Time::HiRes was used.
135
1365.371 Mon Feb 21 14:36:08 CET 2011
137 - backport to windows process emulation code again.
138
1395.37 Sat Feb 19 07:49:44 CET 2011
140 - add a big "Coro thread life cycle" section to "man Coro".
141 - try a tentative workaround against the breakage that 5.13 has
142 introduced without depreciation period. sigh.
143 - no longer use Time::HiRes if gettimeofday is available, which
144 saves quite a lot of memory.
145
1465.36 Sun Feb 13 05:33:41 CET 2011
147 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
148 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
149 method call.
150 - undocument Coro::Timer::sleep and obsolete whole module.
151 - optimise Coro::Timer::timeout memory and cpu usage.
152 - slightly updated Coro::Intro for recent changes.
153 - do not initialise PL_dirty anymore.
154
1555.25 Thu Nov 11 01:08:39 CET 2010
156 - try a different approach on netbsd - netbsd 5 finally has marginally
157 working pthreads, but still broken ucontext/sigaltstack.
158 - openbsd 4.8 finally got their act together, Coro works out of the box
159 with asm, setjmp and pthreads (no change, just informational).
160
1615.24 Sat Oct 23 11:27:12 CEST 2010
162 - port to the EV 4.0 API.
163 - work around bugs in mingw32, making strawberry perl work
164 out of the box.
165 - correctly modify Coro::AIO function prototypes
166 so that they reflect the "no optional parameters" rule.
167 - "ported" libcoro to C++.
168
1695.23 Mon May 17 18:50:42 CEST 2010
170 - be more resistant to ordering changes when initialising
171 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
172 Waldorf).
173 - document that perl 5.12 deliberately removed support for cloning.
174
1755.22 Wed Apr 14 03:55:35 CEST 2010
176 - correctly return udnef on errors in Coro::Handle::read/write
177 (testcase by Marc Mims).
178 - convert Coro::Util into a "perl compatibility wrapper" - the functions
179 are less useful now, but are drop-in replacements for existing
180 functions, listing better alternatives in the documentation. This also
181 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
182 with Coro::Util::inet_aton.
183 - do not override $Coro::idle unconditionally in Coro.pm, as other
184 modules could have provided their own idle coro already
185 (for exmaple, Coro::AnyEvent).
186 - fix Coro::Util::gethost* functions.
187 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
188
1895.21 Wed Dec 16 07:19:51 CET 2009
190 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
191 together.
192 - add some examples on how to combine other event loops with Coro in
193 Coro::AnyEvent, and how to run it (and not to block). Seems to be
194 the most common source of confusion.
195 - try to catch people naively blocking in an event callback.
196 - work around the perl filehandle bug issue in conjunction with
197 older common::sense (as indirectly pointed out by ZSystem).
198 - clarify the "not from signal handlers" section.
199
2005.2 Sun Oct 4 14:54:24 CEST 2009
201 - Coro::Storable destroyed the prototypes of the functions it wrapped.
202 - export rouse_cb and rouse_wait by default now.
203 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
204 - new method $state->swap_sv.
205 - added section on "windows process emulation" to the manpage,
206 after a not-so-fruitful (nor-friendly) "discussion" with chip
207 salzenberg (discussion implies arguments, but his only arguments
208 were ad-hominems, one wonders why he started it in the first
209 place). I hope this explains it well enough for him to understand,
210 and maybe well enough for others to understand.
211 - use common::sense everywhere now.
212 - idle callbacks are no longer supported, use idle coros instead.
213 - print a thread listing when a deadlock is detected.
214
2155.17 Sat Aug 22 23:09:31 CEST 2009
216 - work around a bug in the perl debugger causing crashes
217 when running under the debugger by marking _pool_handler as nodebug.
218 - speed up Coro::async considerably.
219 - try some hacks to get netbsd to work "more often" - their broken
220 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
221 - convert Coro to AE 5.0 API.
222
2235.162 Tue Jul 28 04:04:03 CEST 2009
224 - perl 5.8.2 is now minimum requirement.
225 - skip t/19_handle.t on broken windows perls.
226
2275.161 Wed Jul 22 04:47:38 CEST 2009
228 - Coro::AnyEvent::poll could have a different prototype when EV was
229 used as backend (analyzed by Tatsuhiko Miyagawa).
230 - Coro::AnyEvent errornously initialised the event loop when loaded,
231 not on demand.
232 - try to workaround rare */t/01_unblock.t failures.
233
2345.16 Tue Jul 21 01:44:37 CEST 2009
235 - Coro::AnyEvent failed to hook into the event loop
236 when no threads had been readied between detecting
237 the event loop and actually running it.
238 - considerably speed up Coro::Select by taking avdantage
239 of AnyEvent > 4.8 and some other optimisations.
240 - implement paragraph readline mode in Coro::Handle
241 (based on patches by Zsbán Ambrus).
242 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
243 and analyzed by Yasuhiro MATSUMOTO).
244 - clarified libcoro license and copyright.
245 - someone stole my EXTRA_META!!!
246 - implement Coro::Select::patch_pp_sselect and it's brother,
247 for hardcode select overriding.
248
2495.151 Mon Jul 6 05:41:57 CEST 2009
250 - backport to windows process emulation code again (patch by
251 Yasuhiro MATSUMOTO).
252 - slightly update Coro::MakeMaker.
253
2545.15 Tue Jun 30 10:28:06 CEST 2009
255 - deprecate Coro::Socket, document how to get ipv6 support via
256 AnyEvent::Socket instead.
257 - implement signal->wait ($cb) interface, similar to semaphores.
258 - work around SvOK not supporting getmagic, so we have to getmagic
259 to test for undef :/ (reported by Matthias Waldorf).
260 - load Coro::AnyEvent in all modules using AnyEvent.
261 - work around perl corrupting our internal data structures,
262 reported by Tokuhiro Matsuno.
263 - enable per-coroutine real and cpu time gathering
264 (Coro::State::enable_times).
265
2665.14 Wed Jun 24 01:37:48 CEST 2009
267 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
268 as this seems to have been a difficult concept (poll, sleep, idle,
269 idle_upto).
270 - add Coro::AnyEvent::readable/writable functions.
271 - clarify Coro::EV/Event/AnyEvent manpages.
272 - free per-thread global scalars in the thread calling ->cancel, to
273 avoid crashes when $_, $@ etc., are magical but some of those
274 had already been freed.
275 - "unexperimentalise" the callback interface for Coro::Semaphore.
276 - speed up ready queue management/context switching by using a linked
277 list instead of an array (~5-10%).
278 - implement "watch" command in Coro::Debug shells.
279 - for fun, implement time-slicing as an example in the manpage.
280 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
281 Coro::Event, use the normal AnyEvent handling instead of dieing
282 (the same is true for Coro::Handle).
283 - properly document Coro::EV::timed_io_once.
284 - avoid unneccessary ->cancel calls in Coro::Handle.
285 - maybe make it work on mingw32 with win32 backend
286 (based on patch by Yasuhiro Matsumoto).
287
2885.132 Fri May 29 09:00:39 CEST 2009
289 - do not keep a reference to the argument itself in
290 Coro::Semaphore::guard, as it could change later.
291 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
292 should support a prepare callback.
293
2945.131 Mon Mar 16 23:20:37 CET 2009
295 - implement and document Coro->suspend, Coro->resume.
296 - fix Coro::Select implementation to not (often) close
297 the passed file descriptors (testcase provided by pippijn).
298
2995.13 Mon Dec 15 21:51:42 CET 2008
300 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
301 - don't set diehook to C<undef> but instead to NULL, to avoid
302 spurious warnings.
303 - fix a lot of bugs in Coro::SemaphoreSet.
304 - Coro::SemaphoreSet will less often create a semaphore needlessly.
305 - add Coro::SemaphoreSet::count and wait methods.
306 - take advantage of the new Guard module.
307 - deprecate Coro::guard.
308 - try to fix the dreaded 01_unblock tests once more. I hate it when
309 testsuites need more fixing than the code they are supposed to test.
310 - croak in more cases when a required callback isn't resolvable.
311 - fix some minor issues in Coro::State->call/eval.
312 - use current coroutine context instead of a temporary one
313 when temporarily switching to another coroutine.
314 - do not call C-level on_destroy handlers during global destruction,
315 to avoid needless segfaults.
316
3175.12 Sun Dec 7 13:30:38 CET 2008
9 - add default config for MirOS, which seems to be a bug-to-bug 318 - add default config for MirOS, which seems to be a bug-to-bug
10 compatible fork of openbsd ("world domination by releasing 319 compatible fork of openbsd ("world domination by releasing
11 openbsd cvs before the openbsd folks do it" or so :). 320 openbsd cvs before the openbsd folks do it" or so :).
12 - free_padlist did destroy the names pad, not good, but didn't 321 - free_padlist did destroy the names pad, not good, but didn't
13 seem to bother perl - this could fix issues such as eval "" 322 seem to bother perl - this could fix issues such as eval ""
14 inside a function called form multiple coroutines. 323 inside a function called from multiple coroutines.
15 - use a different method to detect destruction time. 324 - use a different method to detect destruction time.
16 - be more careful when freeing padlists just before global 325 - be more careful when freeing padlists just before global
17 destruction. 326 destruction.
18 - fixed and expanded the call/cc example. 327 - fixed and expanded the call/cc example.
19 - renamed _terminate to _coro_run. 328 - renamed _terminate to _coro_run.

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