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Comparing Coro/Changes (file contents):
Revision 1.524 by root, Thu Oct 1 23:16:27 2009 UTC vs.
Revision 1.604 by root, Fri Dec 7 14:21:09 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
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: http://www.microsoft.com/msj/archive/s2ce.aspx
6TODO: __GCC_HAVE_DWARF2_CFI_ASM
10 7
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 - implement 5.17 compatibility by almost blindly applying a
15 good-looking patch by Father Chrysostomos.
16 - move stack management functions into libcoro 3.
17 - support magic values as timed_io_once args.
18 - recommend AnyEvent 7+ or EV 4+, also require EV
19 version 4 or newer for Coro::EV.
20
216.10 Tue Oct 9 01:14:27 CEST 2012
22 - updated ecb.h, it had a typo that caused it to not compile on many
23 big endian systems (reported by many people).
24 - disable memory fences in ecb.h to improve portability.
25
266.09 Sat Oct 6 23:25:02 CEST 2012
27 - Coro::EV I/O watchers were not interruptible by exceptions
28 (Coro::State::throw) (testcase by sten).
29 - ->throw now puts threads into the ready queue, as this seems to
30 be expected by existing code, and code that doesn't cope with spurious
31 wakeups needs fixing anyway.
32 - use fd -1 in mmap.
33 - cast I32 to int in error message printf.
34 - warn about broken so-called "hardened" kernels.
35
366.08 Fri Apr 13 12:05:47 CEST 2012
37 - be more aggressive about exiting like perl does - formerly,
38 exiting from the non-main thread would not execute END blocks.
39
406.07 Fri Nov 11 21:21:48 CET 2011
41 - work around a bug in PerlIO (setting $SIG{__WARN__} to a PVCV).
42 - update ecb.h.
43
446.06 Mon Aug 8 23:59:48 CEST 2011
45 - cygwin unfortunately patches the stack at runtime, so we use the pthreads
46 backend, which is an order of magnitude slower. unfortunately, cygwins
47 pthread implementation isn't very complete either, so allocate the stack
48 twice just to be sure.
49 (note: cygwin also enables mymalloc, which is NOT THREADSAFE ON WINDOWS,
50 in its ithreaded perl - best recompile cygwin and use the 'w'indows
51 backend for much better performance. also disable ithreads for
52 even better performance...).
53
546.05 Thu Aug 4 21:36:36 CEST 2011
55 - blush, condvar values would not be propagated from send to recv anymore
56 (reported by Chip Salzenberg).
57 - use exponential increase for the readline buffer length in
58 Coro::Handle. also reduce initial allocation to 1020 from 4096 bytes.
59
606.04 Wed Aug 3 17:15:45 CEST 2011
61 - use even more efficient and more compatible condvars for
62 compatibility to AnyEvent 6.x :)
63 - more inconsequential ecb.h updates.
64
656.03 Wed Aug 3 11:41:30 CEST 2011
66 - change how Coro patches AnyEvent condvars for compatibility to
67 AnyEvent 6.x.
68 - update ecb.h, to no longer include <pthread.h> in case WinNT.h
69 hasn't been included.
70
716.02 Wed Jul 13 04:35:19 CEST 2011
72 - "improve portability to Gentoo" - gentoo manages to put perl variables
73 in memory areas that are farther than 2gb apart, which the jit couldn't
74 handle and barfed. now it's just a bit slower on gentoo and similar
75 systems.
76
776.01 Sun Jul 3 12:31:14 CEST 2011
78 - workarounds are good, but the test for whether pthreads are used
79 was not good. thisone should be better.
80 - check differently whether gcc generates cfi instructions itself.
81
826.0 Wed Jun 29 19:43:35 CEST 2011
83 - INCOMPATIBLE CHANGE: unreferenced coro objects will now be
84 destroyed and cleaned up automatically (e.g. async { schedule }).
85 - implement a JIT compiler for part of the thread switch code,
86 which gives a 50% speed improvement on threaded perls, and
87 about 4% on non-thraeded perls (so threaded perls now finally
88 reach about half the speed of non-threaded perls).
89 - slightly modernise Coro::Intro, add section about rouse functions.
90 - avoid DEFSV and ERRSV, giving another 10% improvement
91 in thread switching.
92 - Coro::State->is_destroyed is now called is_zombie.
93 - implement a Coro->safe_cancel method that might fail, but
94 cancels in a "safer" way if it succeeds.
95 - add preliminary support for DEBUGGING perls.
96 - get rid of two hash-accesses when initialising a new Coro - this
97 speeds up coro creation by almost a factor of two.
98 - croak when a coro that is being cancelled tries to block
99 (e.g. while executing a guard block), instead of crashing or
100 deadlocking.
101 - use a more robust and also faster method to identify Coro::State
102 objects - speeds up everything a bit.
103 - implement Coro->cancel in XS for a 20% speed improvement, and to
104 be able to implement mutual cancellation.
105 - speed up context switches by a percent or two by more efficiently
106 allocating context stack entries.
107 - implement Coro->join and Coro->on_destroy in XS for a speedup and
108 a reduction in memory use.
109 - cancelling a coro while it itself is cancelling another coro is
110 now supported and working, instead of triggering an assertion.
111 - be a bit more crash-resistant when calling (buggy) on_destroy
112 callbacks (best effort).
113 - move on_destroy into the slf_frame, to allow extension slf
114 functions to have destructors.
115 - get rid if coro refcounting - simply crash in other interpreter
116 threads by nulling the pointers on clone.
117 - simplify warn/die hook handling when loading Coro - the convoluted
118 logic seems to be no longer neccessary.
119 - use libecb instead of our own home-grown gcc hacks.
120 - document alternatives to Coro::LWP. Please use them :)
121 - work around another mindless idiotic NEEDLESS bug in openbsd/mirbsds
122 sigaltstack. Really. wine suffers from it, erlang suffers from it,
123 and it's known since at least 2006.
124
1255.372 Wed Feb 23 06:14:30 CET 2011
126 - apparently mingw doesn't provide a working gettimeofday, try to
127 work around that by relying on Time::HiRes (indirectly brought to
128 my attention by Max Maischein).
129 - fix some portability issues when Time::HiRes was used.
130
1315.371 Mon Feb 21 14:36:08 CET 2011
132 - backport to windows process emulation code again.
133
1345.37 Sat Feb 19 07:49:44 CET 2011
135 - add a big "Coro thread life cycle" section to "man Coro".
136 - try a tentative workaround against the breakage that 5.13 has
137 introduced without depreciation period. sigh.
138 - no longer use Time::HiRes if gettimeofday is available, which
139 saves quite a lot of memory.
140
1415.36 Sun Feb 13 05:33:41 CET 2011
142 - automatically load Coro::Channel, Coro::RWLock, Coro::Semaphore,
143 Coro::SemaphoreSet, Coro::Signal and Coro::Specific on first "new"
144 method call.
145 - undocument Coro::Timer::sleep and obsolete whole module.
146 - optimise Coro::Timer::timeout memory and cpu usage.
147 - slightly updated Coro::Intro for recent changes.
148 - do not initialise PL_dirty anymore.
149
1505.25 Thu Nov 11 01:08:39 CET 2010
151 - try a different approach on netbsd - netbsd 5 finally has marginally
152 working pthreads, but still broken ucontext/sigaltstack.
153 - openbsd 4.8 finally got their act together, Coro works out of the box
154 with asm, setjmp and pthreads (no change, just informational).
155
1565.24 Sat Oct 23 11:27:12 CEST 2010
157 - port to the EV 4.0 API.
158 - work around bugs in mingw32, making strawberry perl work
159 out of the box.
160 - correctly modify Coro::AIO function prototypes
161 so that they reflect the "no optional parameters" rule.
162 - "ported" libcoro to C++.
163
1645.23 Mon May 17 18:50:42 CEST 2010
165 - be more resistant to ordering changes when initialising
166 Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
167 Waldorf).
168 - document that perl 5.12 deliberately removed support for cloning.
169
1705.22 Wed Apr 14 03:55:35 CEST 2010
171 - correctly return udnef on errors in Coro::Handle::read/write
172 (testcase by Marc Mims).
173 - convert Coro::Util into a "perl compatibility wrapper" - the functions
174 are less useful now, but are drop-in replacements for existing
175 functions, listing better alternatives in the documentation. This also
176 fixes a bug in Coro::LWP which naively substituted Socket::inet_aton
177 with Coro::Util::inet_aton.
178 - do not override $Coro::idle unconditionally in Coro.pm, as other
179 modules could have provided their own idle coro already
180 (for exmaple, Coro::AnyEvent).
181 - fix Coro::Util::gethost* functions.
182 - Coro::Timer corretcly exports it's symbols (reported by Hideki Yamamura).
183
1845.21 Wed Dec 16 07:19:51 CET 2009
185 - automatically load Coro::AnyEvent when AnyEvent and Coro are used
186 together.
187 - add some examples on how to combine other event loops with Coro in
188 Coro::AnyEvent, and how to run it (and not to block). Seems to be
189 the most common source of confusion.
190 - try to catch people naively blocking in an event callback.
191 - work around the perl filehandle bug issue in conjunction with
192 older common::sense (as indirectly pointed out by ZSystem).
193 - clarify the "not from signal handlers" section.
194
1955.2 Sun Oct 4 14:54:24 CEST 2009
11 - Coro::Storable destroyed the prototypes of the functions it wrapped. 196 - Coro::Storable destroyed the prototypes of the functions it wrapped.
197 - export rouse_cb and rouse_wait by default now.
12 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle. 198 - fix various prototype mismatches in Coro::AnyEvent and Coro::Handle.
199 - new method $state->swap_sv.
13 - added section on "windows process emulation" to the manpage, 200 - added section on "windows process emulation" to the manpage,
14 after a not-so-fruitful (nor-friendly) "discussion" with chip 201 after a not-so-fruitful (nor-friendly) "discussion" with chip
15 salzenberg (discussion implies arguments, but his only arguments 202 salzenberg (discussion implies arguments, but his only arguments
16 were ad-hominems, one wonders why he started it in the first 203 were ad-hominems, one wonders why he started it in the first
17 place). I hope this explains it well enough for him to understand, 204 place). I hope this explains it well enough for him to understand,
18 and maybe well enough for others to understand. 205 and maybe well enough for others to understand.
19 - use common::sense everywhere now. 206 - use common::sense everywhere now.
207 - idle callbacks are no longer supported, use idle coros instead.
208 - print a thread listing when a deadlock is detected.
20 209
215.17 Sat Aug 22 23:09:31 CEST 2009 2105.17 Sat Aug 22 23:09:31 CEST 2009
22 - work around a bug in the perl debugger causing crashes 211 - work around a bug in the perl debugger causing crashes
23 when running under the debugger by marking _pool_handler as nodebug. 212 when running under the debugger by marking _pool_handler as nodebug.
24 - speed up Coro::async considerably. 213 - speed up Coro::async considerably.

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