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Revision: 1.154
Committed: Fri Nov 24 15:34:33 2006 UTC (17 years, 5 months ago) by root
Branch: MAIN
CVS Tags: stack_sharing
Changes since 1.153: +7 -2 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 Revision history for Perl extension Coro.
2
3 TODO: check wether stack-sharing is still effective
4 TODO: more effective stack sharing by having one "default stack" for "simple" coroutines?
5 TODO: verify exception frame changes and force stack copies?
6
7 - Coro::Event could cause livelocks if it was used but
8 Event watchers were used directly.
9 - Coro::Event should be cleaner and more efficient now.
10 - minor incompatibility: subclassing is supported directly now
11 without going through a _coro_state member.
12 - process swicthing is much faster now.
13 - very minor optimisations and code/documentation cleanup.
14 - avoid problems due to compiler inlining.
15 - possibly better support for threads.
16 - removed timers from Coro::Timer -> use AnyEvent instead.
17 - replaced Coro::idle coroutine by (cleaner) idle handler.
18
19 2.5 Tue Nov 7 12:22:33 CET 2006
20 - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket
21 use AnyEvent, moved them to Coro/.
22 - added Coro::LWP which contains all the uglyness required to
23 make LWP non-blocking.
24 - should work with perl 5.9.x now (Andreas König made me do it).
25 - fixed another bug in Coro::Select when the timeout was undef.
26 - reuse PL_start_env for all coros, saves some memory per coroutine.
27 - manage PL_top_env differently, hopefully to avoid panic: top_env.
28 - timeout argument was not properly used in Coro::Socket.
29 - allow limited forms of subclassing in Coro::Handle/Coro::Socket.
30 - emulate undocumented(!) functionality of IO::Socket required
31 by LWP(!!).
32 - updated eg/lwp to work with newer lwp's.
33 - remove "FATAL: uncaught exception" prefix. Coroutines that die
34 kill the whole process, just as exceptions in the main "coroutine"
35 did already.
36
37 2.1 Wed Nov 1 23:01:13 CET 2006
38 - fix a long-standing bug in Coro::Select where select with
39 zero timeout would instead change the current default filehandle.
40 - use a simpler and hopefully more robust way to clone padlists
41 (uses less memory and a perl function instead of our own).
42 - coro can now create a stack guard area on many architectures.
43 - Coro::AIO properly reexports additional functions from IO::AIO.
44 - updated libcoro with a workaround for OS X,
45 pach and testing by Michael Schwern.
46
47 2.0 Tue Oct 24 05:47:17 CEST 2006
48 - support additional aio requests in Coro::AIO.
49
50 1.9 (never properly released due to a glitch)
51
52 1.8 Thu Feb 2 00:59:06 CET 2006
53 - applied suggested patch by SAMV to avoid problems during stupid
54 mark & sweep gc run.
55 - applied patch by Scott Walters for 5.9.3 compatibility.
56
57 1.7 Tue Dec 27 01:41:58 CET 2005
58 - added Coro::AIO, a thin wrapper around IO::AIO.
59 - improved Makefile.PL explanations.
60
61 1.6 Mon Dec 12 21:30:05 CET 2005
62 - additionally save PM_curpm might fix as-of-yet
63 unseen problems with regex matches being attributed to the
64 wrong package.
65 - add t/10_bugs.t, which currently checks against imho broken
66 perls that use 0.26MB of stack space per Perl_magic_get
67 invocation (newer linuxes) as opposed to the 0.0002MB perl
68 normally uses.
69 - make stacksize configurable for the ultimate debian experience.
70
71 1.51 Mon Dec 12 18:48:36 CET 2005
72 - remove debugging warn() accidentally left in Coro::Select.
73
74 1.5 Tue Nov 29 13:32:44 CET 2005
75 - use Coro::Event inside Coro::Select to avoid spurious deadlocks.
76 - fix Coro::Select 'select'.
77 - strict'ify some modules.
78 - libcoro errornously restored the SIGUSR2 handler to SIGUSR1.
79 - use XSLoader in selected modules.
80 - remove some 5.6 compatibility cruft.
81
82 1.4 Tue Sep 6 00:11:05 CEST 2005
83 - libcoro did not take into account the trampoline on amd64,
84 when 'l'inux method was used.
85
86 1.31 Tue Aug 30 23:31:33 CEST 2005
87 - some portability fixes/workarounds.
88
89 1.3 Sat Aug 20 03:08:56 CEST 2005
90 - no code changes. module seems to work fine.
91 - improve Coro::State docs, remove reference to nonexisting
92 Coro::State::flush method.
93 - no longer autodetect windows, present it as an option instead.
94
95 1.2 Mon May 16 02:00:55 CEST 2005
96 - included libcoro.c earlier in State.xs, might improve portability.
97 - use a faster and possibly more stable Coro::Cont implementation.
98 - accept x86_64 in addition to amd64 for optimized linux-amd64 support.
99 - fix bugs Coro::SemaphoreSet that could cause locks never to be freed.
100 - fix bugs in CoroAPI.h and document it in Coro::MakeMaker.
101
102 1.11 Thu Mar 3 18:00:52 CET 2005
103 - change of contact address.
104
105 1.1 Tue Feb 22 20:51:16 CET 2005
106 - support [l]inux method on amd64.
107 - allow some context switches while compiling/eval'ing.
108
109 1.0 Tue Aug 10 03:47:27 CEST 2004
110 - Event 0.89 fixes the bug again.
111 - fix the remaining(??) memleak. I didn't free the cache-AV for
112 padlists, so one AV per created anon-sub leaked.
113
114 0.97 Fri May 14 15:23:32 CEST 2004
115 - remove stupid gcc extension that was an experiment only anyway.
116
117 0.96 Thu May 13 18:09:29 CEST 2004
118 - tell people if they have yet another broken Event variant.
119 - made Coro to work _better_ with threads (it seems that, as long
120 as you use Coros in one thread only everything will work fine.
121 Looking at the perl source the problem might be missing locking
122 between Coro and some perl internal routines. That's not easily
123 fixable).
124 - (hopefully) got rid of the static xnext inside transfer.
125
126 0.95 Sun Feb 15 03:20:28 CET 2004
127 - removed Coro::State::flush, implemented a new and much
128 faster caching mechanism by attaching magic to the CV.
129 - a memleak with (real) closures remains.
130 - dramatically reduced size of stacks to 65536 (linux/x86), after
131 observing that even myhttpd never had more than a kilobyte
132 of stack in use (stack is still only physically allocated in
133 pagesize increments for systems suporting mmap).
134 - fix for a "cygwin-64" architecture added, proposed by Stefan Traby.
135 - fix for threaded perl.
136
137 0.9 Sun Nov 23 04:32:39 CET 2003
138 - fix a few very hard to track down but (of course) stupid
139 memory leaks.
140 - stringify version number to avoid locale problems :(.
141 - perl 5.9.0 does not have SvPADBUSY, reported by Scott Walters,
142 hopefully ignoring it "just works".
143
144 0.8 Wed Nov 5 19:38:40 CET 2003
145 - port to perl5.005_03, but only 5.8.x+ is supported!
146 - honor LocalAddr even without LocalPort in Coro::Socket.
147
148 0.7 Tue May 27 03:12:38 CEST 2003
149 - the version jump indicates some level of testing, not gobs
150 of new features.
151 - uh... I found the prompt function in ExtUtils::MakeMaker.
152 Highly correct stuff, that is...
153 - fixed(?) a bug with die's in coroutines causing "panic: top_env".
154 the fix is not well understood by the author, so beware :(.
155
156 0.652 Thu May 8 02:54:46 CEST 2003
157 - Applied patch by Slaven Rezic to set default to "s" on FreeBSD,
158 cause version 4 doesn't have ucontext.
159 - Benjamin Reed reported that setjmp works fine on darwin,
160 so preselect it.
161
162 0.651 Sat Mar 29 15:00:23 CET 2003
163 - fix a bug in Coro::Handle where some bytes could get lost
164 on reading, reported by jason@nichego.net.
165
166 0.65 Sun Mar 23 00:08:26 CET 2003
167 - added a README.linux-glibc.
168 - new module Coro::Select.
169 - also save/restore PL_comppad, fixes segfaults with 5.8.1.
170 (I never claimed that I know what I am doing ;).
171 - set default to setjmp/longjmp on non-x86-linux.
172
173 0.6 Thu Nov 21 11:09:06 CET 2002
174 - made lazy context switching the default.
175 - fixed the bug where SemaphoreSet::guard
176 was the same as timed_guard and timed_guard was missing.
177 - fix a memleak in Coro::Timer.
178 - reclassified context sharing as not experimental.
179
180 0.534 Sun Apr 14 03:05:12 CEST 2002
181 - fixed backspace => tab in header parsing (myhttpd).
182 - added eg/readline, for elmex.
183 - Coro::Event now calls ->start on first call instead of
184 ->again, which created wrong timeouts for the first ->next.
185 - fixed a bug where Coro::Socket returned a closed socket instead
186 of nothing on ECONNREFUSED and similar error conditions.
187
188 0.533 Mon Feb 18 18:49:40 CET 2002
189 - adapt to finally working Event-0.85.
190 - fixed buggy event initialization (trapped under windows, but how
191 could it possibly have worked anywhere?)
192
193 0.532 Wed Jan 16 02:45:32 CET 2002
194 - removed the reference to pp_entersub, might work on
195 (some) win32 perls now (testsuite works under cygwin,
196 without Event, which freezes).
197
198 0.531 Mon Dec 10 22:18:44 CET 2001
199 - Fixed a bug in SemaphoreSet::timed_down.
200
201 0.53 Tue Nov 27 21:11:13 CET 2001
202 - some tests for Event.
203 - slightly different internal architecture to get refcnt into the object
204 and not the reference. might fix a few bugs, certainly did introduce
205 new ones.
206 - Coro::Timer (independent of Event).
207 - new timed_wait functions for Coro::Signal, Semaphore, SemaphoreSet.
208
209 0.52 Tue Nov 6 21:36:18 CET 2001
210 - ported to cygwin (trivial).
211 patch by Gerrit P. Haase <gp@familiehaase.de>.
212 - small setjmp code fix by Sullivan.DanielJ@epamail.epa.gov.
213
214 0.51 Thu Nov 1 20:39:01 CET 2001
215 - terminate/cancel now work properly (otherwise termination
216 could cause a "next coroutine is not and contains not..."
217 error.
218 - added Coro::Socket::shutdown.
219 - Coro::Event::loop no is the same as Event::loop.
220 - implemented terminate with args + join.
221
222 0.5 Fri Sep 28 16:15:35 CEST 2001
223 - fixed "print" on a Coro::Handle. The print method worked.
224 - small tweaks (seem to reduce memory consumption a lot)
225 in various modules.
226 - splendid use of "no warnings" scattered throughout.
227 - added Coro::Handle::rbuf, fixed Coro::Handle::fh.
228
229 0.49 Sun Sep 16 02:42:45 CEST 2001
230 - changed some method calls to function calls for speed
231 inside Coro::Handle.
232 - make Coro::Handle use an array instead of a hash for
233 speed reasons.
234 - IRIX mystery solved: it's SGI's NT, after all: "standard, huh?".
235 sjlj and ucontext should now work.
236 - IRIX-specific port for libcoro.
237 - swapped order of accept results to match IO::Socket.
238 - changed getsock/peername to sock/peername to match IO::Socket.
239 - fixed a bug that caused segfault when returning to main task
240 under some circumstances.
241 - other bugfixes.
242
243 0.45 Sun Sep 2 02:54:01 CEST 2001
244 - new method Coro::Handle::timeout.
245 - corrected speling of set...name to get...name in Coro::Socket.
246 - Coro::Socket::accept now returns a Coro::Socket, not a Coro::Handle.
247 - Coro::Handle now supports fileno and FILENO.
248 - added eg/myhttpd, a web server.
249 - Coro::Socket now accepts numeric ports as well as "port(number)"
250 syntax.
251 - moved some scheduling primitives into xs code. more to come.
252 - new simple priority system.
253 - implemented Coro::Event using XS, almost four times faster!
254 - small memory corruption problem fixed (boy that was difficult).
255
256 0.13 Wed Aug 8 16:53:07 CEST 2001
257 - new method Coro::Handle::readline.
258 - added eg/lwp and Coro::Handle::autoflush, to make LWP work.
259 (see eg/lwp on how to make LWP non-blocking).
260 - renamed Coro::Socket::new_inet to new.
261 - added Coro::Util, some utility functions.
262 - die/eval now works better (still get annoying (but true ;)
263 "Callback called exit" messages).
264 - Coro::Handle now supports timeout, and Coro::Socket Timeout.
265 - much better Coro::Socket support.
266
267 0.12 Fri Jul 27 04:19:01 CEST 2001
268 - do not use mmap if neither MAP_ANON nor MAP_ANONYMOUS is defined.
269 - very experimental stack sharing algorithm. not 100% safe but
270 should work well in practise ;)
271 - added Coro::RWLock.
272 - Coro::Specific now works.
273
274 0.11 Tue Jul 24 22:49:21 CEST 2001
275 - added specialized hack for newer and older linux versions (fast).
276 - renamed Coro::Event::IO to Coro::Handle.
277 - new module Coro::Socket.
278
279 0.1 Tue Jul 24 01:47:53 CEST 2001
280 - release candidate 3. A rather new internal structure :(
281 - the great renaming: Damian Conway gave me a suitable replacement
282 for yield.
283 - added Coro/libcoro, a portable coroutine implementation for C
284 (not even perl-dependent!!!), which can be used by Coro::State.
285 - renamed SAVE_DEFSV (on xs-level only) to avoid symbol clash in
286 perl-5.6.
287 - new function Coro::Event::idle.
288 - the idle process is now overriden
289 by default in Coro::Event.
290 - Coro::Channel now enforces the size.
291 - canceling events now works in all cases.
292 - Coro state now include $_ and $@.
293 - yet another bug workaround that I do not really understand :(
294 - new module Coro::Event::IO (very undocumented) to do
295 non-blocking i/o.
296 - performance tuning.
297
298 0.08 Thu Jul 19 06:13:25 CEST 2001
299 - release candidate 2 (new functionality).
300 - add Coro::State::flush function.
301 - transfer now supports a flags value (mostly for speed ATM).
302 - might compile and work in the presence of threads now.
303 - continuations have a saner syntax.
304 - no more memleaks.
305
306 0.07 Tue Jul 17 17:40:18 CEST 2001
307 - release candidate 1 ;)
308 - slightly nicer code.
309 - fixed a scheduling bug in Coro::Event.
310
311 0.06 Tue Jul 17 04:23:24 CEST 2001
312 - ok, I found the showstopper - the same sub must not be
313 re-entered in two different coroutines, otherwise => crash. I
314 see no easy solution to this problem, except by walking the call
315 chaing and saving/restoring the cv's, which is what I do now.
316 - memory leaks still latent, especially at thread termination.
317 - Coro::Event now works (haha).
318
319 0.05 Sun Jul 15 17:32:20 CEST 2001
320 - fixed a few issues in Coro::Event.
321 - I forgot to include Coro::Event in 0.04 :(:(:(
322
323 0.04 Sun Jul 15 05:24:59 CEST 2001
324 - @_ is now properly localized.
325 - Coro::State is now easier subclassable.
326 - Coro::Cont now coroutine-aware.
327 - Coro::Specific is a low-overhead module to create
328 coroutine-specific vars.
329 - Coro::Event provides a simple interface to Event.
330
331 0.03 Fri Jul 13 14:51:52 CEST 2001
332 - transfer() now implemented in XS (beware).
333 - new module Coro::Cont for really faked continuations.
334 - big internal architecture changes: Coro::State is now
335 really low-level and can thus be used to implement other
336 interesting things, While "Coro::" implements a process-like
337 model. Still crude and subject to change.
338 - $_ and $@ are no longer being localized.
339
340 0.02 Tue Jul 10 01:38:17 CEST 2001
341 - implemented "async" attribute.
342 - $_ and $@ are now localized.
343 - added Coro::Channel.
344 - more testcases, still no docs.
345
346 0.01 Tue Jul 3 02:18:41 CEST 2001
347 - original version; copied from Convert::Scalar.
348