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Comparing Coro/Changes (file contents):
Revision 1.510 by root, Thu Jul 9 18:45:57 2009 UTC vs.
Revision 1.628 by root, Thu Mar 6 06:40:31 2014 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
5 actor model (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)).
7TODO: unready_all
8TODO: myhttpd header parsing
9TODO: channel->maxsize(newsize)? 4TODO: channel->maxsize(newsize)?
5TODO: __GCC_HAVE_DWARF2_CFI_ASM
6TODO: swap_sv, maybe add scope_swap_sv, andallow to unswap by repeat?
7TODO: swap_sv not undone in pool
10 8
9 - croak when cancel is called without a thread context.
10
116.37 Tue Mar 4 13:27:33 CET 2014
12 - *sigh*, removed leftover debugging code from debugging a
13 perl bug, of all things.
14
156.36 Tue Mar 4 07:11:59 CET 2014
16 - semaphores would not clear the destroy hook when interrupted
17 by ->throw, causing segfaults or worse.
18 - ->throw on a thread waiting for a semaphore did not acquire
19 the semaphore, but also didn't wake up other waiters,
20 possibly causing a deadlock.
21 - "FATAL: $Coro::IDLE blocked itself" will now use Carp::confess
22 to report a full stacktrace, which should help find out
23 where the actual call is.
24 - "atomically" destroy data in slf_destroy, because it is
25 the right thing to do, just in case.
26 - disable ecb.h libm dependency, to compile on ancient systems
27 or under adverse conditions.
28
296.33 Mon Nov 18 11:26:27 CET 2013
30 - do not crash when freeing padlists with holes (in 5.18).
31 - tentative SVt_BIND 5.19 port/fix.
32
336.32 Tue Nov 5 15:35:35 CET 2013
34 - use a new algorithm to derive padlists for perl 5.18. The old
35 one could lead to 0-pointer accesses inside perl (reported
36 by Darin McBride).
37
386.31 Thu May 9 07:39:48 CEST 2013
39 - Coro::AIO requests would crash if the thread was ready'd
40 while the request was ongoing.
41
426.29 Wed May 8 02:55:18 CEST 2013
43 - when an on_destroy handler destructs the coro currently being
44 destructed a perl scalar could be accessed after being freed,
45 likely causing a crash.
46
476.28 Wed Mar 6 06:58:02 CET 2013
48 - clean remnants of existing __DIE__ and __WARN__ handlers so
49 they lose their magic and will not cause segfaults later
50 (testcase by Andrey Sagulin).
51 - improved Coro::State documentation a bit.
52 - Coro::Debug::command now flushes the output.
53 - add hack detection code for x32 abi, because the braindead slugs
54 who designed that made it look exactly like x86_64 without
55 providing proper compile time symbols to test for it. as a result,
56 this detection cannot work reliably.
57 - valgrind stack registering was broken.
58 - do not rely on Time::HiRes anymore in Coro::Debug.
59
606.23 Fri Dec 7 23:36:37 CET 2012
61 - use experimental fiber implementation on native windows
62 perls.
63 - use sizeof (void *) as multiplication factor for stack sizes,
64 to accomodate the totally braindamaged microsoft 64 bit "os".
65 - changed verifier host from win2k-ap510-32 to win7-sp516-32/64.
66 activeperl 5.16 crashes when PerlIO_define_layer is called due
67 to some bug in the perl dll, strawberry perl at least passes
68 the testsuite.
69 - implement Coro::Handle->peeraddr/host/port, for slightly
70 improved compatibility with LWP.
71 - implement 5.17 compatibility by almost blindly applying a
72 good-looking patch by Father Chrysostomos.
73 - move stack management functions into libcoro 3.
74 - libcoro version 3 "released".
75 - support magic values as timed_io_once args.
76 - recommend AnyEvent 7+ or EV 4+, also require EV
77 version 4 or newer for Coro::EV.
78
796.10 Tue Oct 9 01:14:27 CEST 2012
80 - updated ecb.h, it had a typo that caused it to not compile on many
81 big endian systems (reported by many people).
82 - disable memory fences in ecb.h to improve portability.
83
846.09 Sat Oct 6 23:25:02 CEST 2012
85 - Coro::EV I/O watchers were not interruptible by exceptions
86 (Coro::State::throw) (testcase by sten).
87 - ->throw now puts threads into the ready queue, as this seems to
88 be expected by existing code, and code that doesn't cope with spurious
89 wakeups needs fixing anyway.
90 - use fd -1 in mmap.
91 - cast I32 to int in error message printf.
92 - warn about broken so-called "hardened" kernels.
93
946.08 Fri Apr 13 12:05:47 CEST 2012
95 - be more aggressive about exiting like perl does - formerly,
96 exiting from the non-main thread would not execute END blocks.
97
986.07 Fri Nov 11 21:21:48 CET 2011
99 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
100 - update ecb.h.
101
1026.06 Mon Aug 8 23:59:48 CEST 2011
103 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
104 backend, which is an order of magnitude slower. unfortunately, cygwins
105 pthread implementation isn't very complete either, so allocate the stack
106 twice just to be sure.
107 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
108 in its ithreaded perl - best recompile cygwin and use the 'w'indows
109 backend for much better performance. also disable ithreads for
110 even better performance...).
111
1126.05 Thu Aug 4 21:36:36 CEST 2011
113 - blush, condvar values would not be propagated from send to recv anymore
114 (reported by Chip Salzenberg).
115 - use exponential increase for the readline buffer length in
116 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
117
1186.04 Wed Aug 3 17:15:45 CEST 2011
119 - use even more efficient and more compatible condvars for
120 compatibility to AnyEvent 6.x :)
121 - more inconsequential ecb.h updates.
122
1236.03 Wed Aug 3 11:41:30 CEST 2011
124 - change how Coro patches AnyEvent condvars for compatibility to
125 AnyEvent 6.x.
126 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
127 hasn't been included.
128
1296.02 Wed Jul 13 04:35:19 CEST 2011
130 - "improve portability to Gentoo" - gentoo manages to put perl variables
131 in memory areas that are farther than 2gb apart, which the jit couldn't
132 handle and barfed. now it's just a bit slower on gentoo and similar
133 systems.
134
1356.01 Sun Jul 3 12:31:14 CEST 2011
136 - workarounds are good, but the test for whether pthreads are used
137 was not good. thisone should be better.
138 - check differently whether gcc generates cfi instructions itself.
139
1406.0 Wed Jun 29 19:43:35 CEST 2011
141 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
142 destroyed and cleaned up automatically (e.g. async { schedule }).
143 - implement a JIT compiler for part of the thread switch code,
144 which gives a 50% speed improvement on threaded perls, and
145 about 4% on non-thraeded perls (so threaded perls now finally
146 reach about half the speed of non-threaded perls).
147 - slightly modernise Coro::Intro, add section about rouse functions.
148 - avoid DEFSV and ERRSV, giving another 10% improvement
149 in thread switching.
150 - Coro::State->is_destroyed is now called is_zombie.
151 - implement a Coro->safe_cancel method that might fail, but
152 cancels in a "safer" way if it succeeds.
153 - add preliminary support for DEBUGGING perls.
154 - get rid of two hash-accesses when initialising a new Coro - this
155 speeds up coro creation by almost a factor of two.
156 - croak when a coro that is being cancelled tries to block
157 (e.g. while executing a guard block), instead of crashing or
158 deadlocking.
159 - use a more robust and also faster method to identify Coro::State
160 objects - speeds up everything a bit.
161 - implement Coro->cancel in XS for a 20% speed improvement, and to
162 be able to implement mutual cancellation.
163 - speed up context switches by a percent or two by more efficiently
164 allocating context stack entries.
165 - implement Coro->join and Coro->on_destroy in XS for a speedup and
166 a reduction in memory use.
167 - cancelling a coro while it itself is cancelling another coro is
168 now supported and working, instead of triggering an assertion.
169 - be a bit more crash-resistant when calling (buggy) on_destroy
170 callbacks (best effort).
171 - move on_destroy into the slf_frame, to allow extension slf
172 functions to have destructors.
173 - get rid if coro refcounting - simply crash in other interpreter
174 threads by nulling the pointers on clone.
175 - simplify warn/die hook handling when loading Coro - the convoluted
176 logic seems to be no longer neccessary.
177 - use libecb instead of our own home-grown gcc hacks.
178 - document alternatives to Coro::LWP. Please use them :)
179 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
180 sigaltstack. Really. wine suffers from it, erlang suffers from it,
181 and it's known since at least 2006.
182
1835.372 Wed Feb 23 06:14:30 CET 2011
184 - apparently mingw doesn't provide a working gettimeofday, try to
185 work around that by relying on Time::HiRes (indirectly brought to
186 my attention by Max Maischein).
187 - fix some portability issues when Time::HiRes was used.
188
1895.371 Mon Feb 21 14:36:08 CET 2011
190 - backport to windows process emulation code again.
191
1925.37 Sat Feb 19 07:49:44 CET 2011
193 - add a big "Coro thread life cycle" section to "man Coro".
194 - try a tentative workaround against the breakage that 5.13 has
195 introduced without depreciation period. sigh.
196 - no longer use Time::HiRes if gettimeofday is available, which
197 saves quite a lot of memory.
198
1995.36 Sun Feb 13 05:33:41 CET 2011
200 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
201 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
202 method call.
203 - undocument Coro::Timer::sleep and obsolete whole module.
204 - optimise Coro::Timer::timeout memory and cpu usage.
205 - slightly updated Coro::Intro for recent changes.
206 - do not initialise PL_dirty anymore.
207
2085.25 Thu Nov 11 01:08:39 CET 2010
209 - try a different approach on netbsd - netbsd 5 finally has marginally
210 working pthreads, but still broken ucontext/sigaltstack.
211 - openbsd 4.8 finally got their act together, Coro works out of the box
212 with asm, setjmp and pthreads (no change, just informational).
213
2145.24 Sat Oct 23 11:27:12 CEST 2010
215 - port to the EV 4.0 API.
216 - work around bugs in mingw32, making strawberry perl work
217 out of the box.
218 - correctly modify Coro::AIO function prototypes
219 so that they reflect the "no optional parameters" rule.
220 - "ported" libcoro to C++.
221
2225.23 Mon May 17 18:50:42 CEST 2010
223 - be more resistant to ordering changes when initialising
224 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
225 Waldorf).
226 - document that perl 5.12 deliberately removed support for cloning.
227
2285.22 Wed Apr 14 03:55:35 CEST 2010
229 - correctly return udnef on errors in Coro::Handle::read/write
230 (testcase by Marc Mims).
231 - convert Coro::Util into a "perl compatibility wrapper" - the functions
232 are less useful now, but are drop-in replacements for existing
233 functions, listing better alternatives in the documentation. This also
234 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
235 with Coro::Util::inet_aton.
236 - do not override $Coro::idle unconditionally in Coro.pm, as other
237 modules could have provided their own idle coro already
238 (for exmaple, Coro::AnyEvent).
239 - fix Coro::Util::gethost* functions.
240 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
241
2425.21 Wed Dec 16 07:19:51 CET 2009
243 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
244 together.
245 - add some examples on how to combine other event loops with Coro in
246 Coro::AnyEvent, and how to run it (and not to block). Seems to be
247 the most common source of confusion.
248 - try to catch people naively blocking in an event callback.
249 - work around the perl filehandle bug issue in conjunction with
250 older common::sense (as indirectly pointed out by ZSystem).
251 - clarify the "not from signal handlers" section.
252
2535.2 Sun Oct 4 14:54:24 CEST 2009
254 - Coro::Storable destroyed the prototypes of the functions it wrapped.
255 - export rouse_cb and rouse_wait by default now.
256 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
257 - new method $state->swap_sv.
258 - added section on "windows process emulation" to the manpage,
259 after a not-so-fruitful (nor-friendly) "discussion" with chip
260 salzenberg (discussion implies arguments, but his only arguments
261 were ad-hominems, one wonders why he started it in the first
262 place). I hope this explains it well enough for him to understand,
263 and maybe well enough for others to understand.
264 - use common::sense everywhere now.
265 - idle callbacks are no longer supported, use idle coros instead.
266 - print a thread listing when a deadlock is detected.
267
2685.17 Sat Aug 22 23:09:31 CEST 2009
269 - work around a bug in the perl debugger causing crashes
270 when running under the debugger by marking _pool_handler as nodebug.
271 - speed up Coro::async considerably.
272 - try some hacks to get netbsd to work "more often" - their broken
273 setjmp/longjmp, ucontext *and* phtreads are really hard on Coro.
274 - convert Coro to AE 5.0 API.
275
2765.162 Tue Jul 28 04:04:03 CEST 2009
277 - perl 5.8.2 is now minimum requirement.
278 - skip t/19_handle.t on broken windows perls.
279
2805.161 Wed Jul 22 04:47:38 CEST 2009
281 - Coro::AnyEvent::poll could have a different prototype when EV was
282 used as backend (analyzed by Tatsuhiko Miyagawa).
283 - Coro::AnyEvent errornously initialised the event loop when loaded,
284 not on demand.
285 - try to workaround rare */t/01_unblock.t failures.
286
2875.16 Tue Jul 21 01:44:37 CEST 2009
288 - Coro::AnyEvent failed to hook into the event loop
289 when no threads had been readied between detecting
290 the event loop and actually running it.
11 - considerably speed up Coro::Select by taking avdantage 291 - considerably speed up Coro::Select by taking avdantage
12 of AnyEvent > 4.8 and some other optimisations. 292 of AnyEvent > 4.8 and some other optimisations.
293 - implement paragraph readline mode in Coro::Handle
294 (based on patches by Zsbán Ambrus).
295 - replace WSAEINPROGRESS by WSAEWOULDBLOCK (reported
296 and analyzed by Yasuhiro MATSUMOTO).
297 - clarified libcoro license and copyright.
13 - someone stole my EXTRA_META!!! 298 - someone stole my EXTRA_META!!!
299 - implement Coro::Select::patch_pp_sselect and it's brother,
300 for hardcode select overriding.
14 301
155.151 Mon Jul 6 05:41:57 CEST 2009 3025.151 Mon Jul 6 05:41:57 CEST 2009
16 - backport to windows process emulation code again (patch by 303 - backport to windows process emulation code again (patch by
17 Yasuhiro MATSUMOTO). 304 Yasuhiro MATSUMOTO).
18 - slightly update Coro::MakeMaker. 305 - slightly update Coro::MakeMaker.
217 - ->throw is now supported on Coro::State objects. 504 - ->throw is now supported on Coro::State objects.
218 - clean up cctx creation code a bit. 505 - clean up cctx creation code a bit.
219 - entersub is actually a UNOP, not a LOGOP (not a bugfix). 506 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
220 507
2214.9 Sat Nov 8 17:45:27 CET 2008 5084.9 Sat Nov 8 17:45:27 CET 2008
222 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there). 509 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
223 - (libcoro) no longer leak threads in the experimental pthread backend, 510 - (libcoro) no longer leak threads in the experimental pthread backend,
224 also speed it up considerably. 511 also speed it up considerably.
225 - (libcoro) do not rely on makecontext passing void *'s unscathed. 512 - (libcoro) do not rely on makecontext passing void *'s unscathed.
226 - fix compiletime dependencies on libcoro in the Makefile. 513 - fix compiletime dependencies on libcoro in the Makefile.
227 - cctx_count wasn't always updated properly. 514 - cctx_count wasn't always updated properly.
289 - remove debugging code related to MgPV_nolen_const, also try to 576 - remove debugging code related to MgPV_nolen_const, also try to
290 make it compile with perl 5.8.6 (yes, apple apparently loves 577 make it compile with perl 5.8.6 (yes, apple apparently loves
291 outdated software). Reported by John S. 578 outdated software). Reported by John S.
292 579
2934.744 Tue Jul 8 22:06:35 CEST 2008 5804.744 Tue Jul 8 22:06:35 CEST 2008
294 - correctly provide default DIE/WARN handlers as documented. 581 - correctly provide default DIE/WARN handlers as documented.
295 - also overwrite PL_vtbl_sigelem.svt_clear, even though current 582 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
296 implementations inside perl work fine for us. 583 implementations inside perl work fine for us.
297 584
2984.743 Mon Jun 16 00:21:57 CEST 2008 5854.743 Mon Jun 16 00:21:57 CEST 2008
299 - when using Coro::EV without running EV::loop it could 586 - when using Coro::EV without running EV::loop it could
321 - sprinkle "no warnings" freely over everything, also suppress 608 - sprinkle "no warnings" freely over everything, also suppress
322 warnings for some other modules. 609 warnings for some other modules.
323 - fix typo in WSAEWOULDBLOCK. 610 - fix typo in WSAEWOULDBLOCK.
324 611
3254.72 Sun May 25 05:14:36 CEST 2008 6124.72 Sun May 25 05:14:36 CEST 2008
326 - tweak META.yaml a bit, unfortunately, there is no documented way 613 - tweak META.yaml a bit, unfortunately, there is no documented way
327 to have optional dependencies with CPAN. doh :( 614 to have optional dependencies with CPAN. doh :(
328 - avoid running some tests on windows because they would fail due to 615 - avoid running some tests on windows because they would fail due to
329 perl bug (broken fork, broken pipes...). 616 perl bug (broken fork, broken pipes...).
330 - work around perl on windows bugs where perl returns undocumented 617 - work around perl on windows bugs where perl returns undocumented
331 error codes for sysread, syswrite etc. by taking advantage 618 error codes for sysread, syswrite etc. by taking advantage
335 - use unix domain sockets in testsuite to work around 622 - use unix domain sockets in testsuite to work around
336 common perl implementation bugs on widows (they are emulated by 623 common perl implementation bugs on widows (they are emulated by
337 tcp sockets on windows. ugh.) 624 tcp sockets on windows. ugh.)
338 625
3394.71 Sat May 24 20:01:27 CEST 2008 6264.71 Sat May 24 20:01:27 CEST 2008
340 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()"). 627 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
341 - take advantage of async name resolution of AnyEvent::Util. 628 - take advantage of async name resolution of AnyEvent::Util.
342 - work around brutal inet_aton override in Coro::LWP. 629 - work around brutal inet_aton override in Coro::LWP.
343 - take advantage of the readyhook in Coro::EV, for smoother 630 - take advantage of the readyhook in Coro::EV, for smoother
344 scheduling. 631 scheduling.
345 632
3464.7 Sun May 11 00:32:19 CEST 2008 6334.7 Sun May 11 00:32:19 CEST 2008
347 - completely reworked the Coro manpage. 634 - completely reworked the Coro manpage.
348 - added Coro::AnyEvent, generic event loop integration. 635 - added Coro::AnyEvent, generic event loop integration.
349 - implement cancel, ready and kill commands in Coro::Debug. 636 - implement cancel, ready and kill commands in Coro::Debug.
350 - document find_coro in Coro::Debug. 637 - document find_coro in Coro::Debug.
351 - incompatible change: rename has_stack to has_cctx. 638 - incompatible change: rename has_stack to has_cctx.
352 - Coro::AIO and Coro::BDB no longer force event model detection, 639 - Coro::AIO and Coro::BDB no longer force event model detection,
353 use AnyEvent::AIO and AnyEvent::BDB. 640 use AnyEvent::AIO and AnyEvent::BDB.
477 764
4784.11 Thu Oct 11 02:40:24 CEST 2007 7654.11 Thu Oct 11 02:40:24 CEST 2007
479 - port to threaded perls. 766 - port to threaded perls.
480 767
4814.1 Thu Oct 11 02:38:16 CEST 2007 7684.1 Thu Oct 11 02:38:16 CEST 2007
482 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now 769 - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now
483 be local to each coro (see Coro::State). 770 be local to each coro (see Coro::State).
484 - incompatible change: for very deep reasons, cede and cede_notself 771 - incompatible change: for very deep reasons, cede and cede_notself
485 cannot return anything, so nothing will be returned. 772 cannot return anything, so nothing will be returned.
486 - possibly bring back 5.10 compatibility (untested). 773 - possibly bring back 5.10 compatibility (untested).
487 - work around stupid (and wrong) warning on 5.10 :(. 774 - work around stupid (and wrong) warning on 5.10 :(.
559 but stateful semantics. 846 but stateful semantics.
560 - fixed a lot of typos in Coro.pm (patch submitted by David 847 - fixed a lot of typos in Coro.pm (patch submitted by David
561 Steinbrunner, which applied flawlessly). 848 Steinbrunner, which applied flawlessly).
562 849
5633.6 Sat Apr 14 17:13:31 CEST 2007 8503.6 Sat Apr 14 17:13:31 CEST 2007
564 - added some bugfixes to get eg/myhttpd working again. 851 - added some bugfixes to get eg/myhttpd working again.
565 - added Coro::Storable for often-cede'ing freeze/thaw. 852 - added Coro::Storable for often-cede'ing freeze/thaw.
566 - try to do a clean exit when a coroutine calls exit 853 - try to do a clean exit when a coroutine calls exit
567 (EXPERIMENTAL). 854 (EXPERIMENTAL).
568 - got rid of indirect call through _coro_init. 855 - got rid of indirect call through _coro_init.
569 - updated the partly antique examples in eg/ to 856 - updated the partly antique examples in eg/ to

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