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Revision: 1.245
Committed: Wed Jan 22 02:10:13 2020 UTC (4 years, 3 months ago) by root
Branch: MAIN
Changes since 1.244: +4 -0 lines
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# Content
1 Revision history for Perl extension EV
2
3 Changes marked with (libev) are changes in libev, and might have more
4 documentation in the libev Changes file.
5
6 TODO: accessors for other members (signum, statdata etc?)
7 - use ev_io_modify in ->events, isntead of the potentially
8 slower ev_io_set.
9
10 4.31 Fri Dec 20 21:57:00 CET 2019
11 - (libev) handle backends with minimum wait time a bit better by
12 not waiting in the presence of already-expired timers
13 (behaviour reported by Felipe Gasper).
14 - (libev) use timerfd to detect timejumps.
15 - (libev) new loop flag: EVFLAG_NOTIMERFD.
16
17 4.30 Fri Nov 22 21:00:00 CET 2019
18 - (libev) use a different and hopefully even more portable
19 test to disable io_uring when header files are too old,
20 by directly testing LINUX_VERSION_CODE.
21 - (libev) fix a bug in the io_uring backend that polled the wrong
22 backend fd, causing it to not work in many cases.
23
24 4.29 Fri Nov 22 15:34:29 CET 2019
25 - (libev) add io uring autoconf and non-autoconf detection,
26 the latter of which should disable io_uring compilation
27 on old systems.
28
29 4.28 Tue Nov 19 13:55:39 CET 2019
30 - (libev) fix ev_port backend, thanks to David H. Gutteridge for
31 - (libev) many bugfixes in linuxaio backend.
32 - (libev) experimental io uring interface.
33 reminding me to actually release the fix.
34 - try to name ev.h more explicitly, to hopefully improve portability.
35 - opportunistically round up wait times for poll and epoll backend,
36 to avoid unnecessary loop iterations.
37 - add build dependency on ev_linuxaio.c.
38 - quickly (re)-ported to minix 3.3 before minix crashed again.
39
40 4.27 Thu Jun 27 09:39:58 CEST 2019
41 - (libev) completely rewritten linuxaio backend, maybe
42 usable as a general-use backend.
43 - (libev) use more aggressive assertions to catch
44 more usage errors.
45 - allow users to re-enable assert() in case it is disabled
46 by perl (which is typically the case).
47
48 4.26 Mon Jun 24 23:39:40 CEST 2019
49 - (libev) included experimental linux aio backend.
50 - allow the linux aio backend to be used by default
51 only when explicitly configured during Makefile.PL time.
52
53 4.25 Fri Dec 21 08:04:26 CET 2018
54 - (libev) updated to libev 4.25, minor fixes and enhancements.
55 - document the requirement to "use EV" when using EV::MakeMaker.
56 - only use __register_atfork with glibc and uclibc, as musl
57 defines __linux__, but doesn't implement the linux standard
58 base ABI, nor makes itself detectable via a macro, both apparently
59 by design, winning the "broken by design 2016 award" - well done.
60 - correct EV::periodic example 24h after midnight -> one day after
61 midnight (reported by Felix Ostmann).
62
63 4.22 Sun Dec 20 02:34:39 CET 2015
64 - (libev) when epoll detects unremovable fds in the fd set, rebuild
65 only the epoll descriptor, not the signal pipe, to avoid
66 SIGPIPE in ev_async_send. This doesn't solve it on fork,
67 so document what needs to be done in ev_loop_fork
68 (analyzed by Benjamin Mahler).
69 - (libev) remove superfluous sys/timeb.h include on win32
70 (analyzed by Jason Madden).
71 - updated libecb.
72
73 4.21 Mon Jul 13 21:47:33 CEST 2015
74 - allow argument in timer->again.
75 - document timer->remaining.
76 - document default repeat value for timer->set.
77
78 4.20 Sat Jun 20 13:07:34 CEST 2015
79 - added stability canary support.
80 - truly rely on automatic configuration for clock_gettime and others.
81 unfortunately, this doesn't help with activeperl and similar perls,
82 which define _POSIX_TIMERS without actually implementing any of it.
83 - (libev, ecb) make it compile as C++ again.
84 - (libev) fix a potential aliasing issue when accessing watcher cbs.
85
86 4.18 Sat Sep 6 20:37:23 CEST 2014
87 - use slightly better weay to find includes, to support multiarch
88 on newer perls.
89
90 4.17 Fri Apr 11 06:22:38 CEST 2014
91 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
92 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
93 in 5.18. What's so attractive about giving a shit about backwards
94 compatibility - I will never understand.
95
96 4.16 Sat Mar 8 16:49:05 CET 2014
97 - make sure EV::CHECK is available at all times.
98 - avoid a spurious warning when perl -w overrides "no warnings".
99 - use perl's signal implementation on WIN32.
100 - ensure extern "C" function pointers are used for externally-visible
101 pointers.
102 - (libev) mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
103 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
104 - (libev) in the absence of autoconf, do not use the clock syscall
105 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
106 doing clock_gettime in userspace).
107 - (ecb) work around memory barriers and volatile apparently both being
108 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
109
110 4.15 Fri Mar 1 12:15:53 CET 2013
111 - (libev) upgrade to 4.15 - too many changes to list.
112 - EV::run now returns a boolean.
113 - API version 5:1.
114 - document that cleanup watchers are not available via perl.
115 - cast I32 to int in error message printf.
116 - remove dependencies on librt and libpthreads on GNU/Linux.
117
118 4.11 Sat Feb 4 19:56:26 CET 2012
119 - (libev) implement memory fences for (obsolete) llvm-gcc.
120
121 4.10 Thu Jan 19 18:54:23 CET 2012
122 - (libev) fix a race where the workaround against the epoll fork
123 bugs caused signals to not be handled anymore.
124 - (libev) correct backend_fudge for most backends, and implement
125 a windows specific workaround to avoid looping because we call
126 both select and Sleep, both with different time resolutions.
127 - e_new wasn't declared static (causing very minor .so bloat).
128 - replace more old api names by new ones.
129
130 4.03 Tue Jan 11 14:51:05 CET 2011
131 - do not avoid the clock_gettime call on GNU/Linux anymore, as EV
132 links against -lpthread anyways - as a result, EV might now take
133 advantage of fast userspace clock_gettime implementations,
134 but also links against -lrt.
135 - (libev) lots of event port bug workarounds.
136 - (libev) officially support files in I/O watchers.
137 - (libev) new function ev_feed_signal.
138 - fix documentation parts still refering to the 3.x API.
139
140 4.02 Thu Dec 30 08:27:41 CET 2010
141 - the revents argument did not stringify correctly, as only the
142 numeric value was updated, while the string value was kept from
143 previous invocations.
144
145 4.01 Sun Dec 5 12:42:13 CET 2010
146 - fully support EV_COMPAT3=0.
147 - default_fork was stupidly defined as inline.
148 - ask cpan to upgrade AnyEvent if < 5.29.
149 - support EV_EXTRA_DEFS during configuration.
150 - support -DEV_NO_LOOPS for snakker build.
151
152 4.00 Mon Oct 25 13:30:09 CEST 2010
153 - many API changes, see the manual.
154 - (libev) lots and lots of bugfixes, see the ev documentation.
155 - fix a bug where inotify usage would parse the same event
156 multiple times, causing various forms of breakage.
157 - greatly reduce stack usage for inotify (8kb to <0.5kb).
158 - expose ev_depth and ev_verify via the XS API.
159 - implement ev_cleanup watchers.
160 - (libev) ev_embed_stop did not correctly stop the watcher.
161 - (libev) disable poll backend on AIX.
162 - (libev) rename EV_TIMEOUT to EV_TIMER.
163 - (libev) add section on accept() problems to the manpage.
164 - (libev) no child watchers on win32.
165 - make code more aliasing compliant, in case perl is ever
166 translated to C.
167 - document the EV::CHECK runtime unavailability.
168 - ported to minix 3.1.7.
169
170 3.9 Thu Dec 31 07:59:59 CET 2009
171 - disable t/07* under automatic testing.
172 - increase t/09* timeouts as netbsd has *horribly* broken
173 select/kevent that *usually* sleep >>0.6s instead of 0.3.
174 - add constants EV::FLAG_NOSIGFD, EV::FLAG_NOINOTIFY and
175 EV::BACKEND_ALL.
176 - (libev) signalfd is no longer used by default.
177 - (libev) backport inotify code to C89.
178 - (libev) inotify file descriptors could leak into child processes.
179 - (libev) ev_stat watchers could keep an errornous extra ref on the loop.
180 - (libev) take advantage of inotify_init1, if available.
181 - (libev) the signal handling pipe wasn't always initialised under windows.
182 - changed minimum glibc requirement from glibc 2.9 to 2.7, for signalfd.
183 - (libev) only replace ev_stat.prev when we detect an actual difference.
184
185 3.8 Sun Aug 9 15:30:10 CEST 2009
186 - implement $loop->signal/signal_ns.
187 - (libev) incompatible change: do not necessarily reset signal
188 handler to SIG_DFL when a sighandler is stopped.
189 - (libev) ev_default_destroy did not properly free or zero some
190 members, potentially causing crashes and memory corruption on
191 repated ev_default_destroy/ev_default_loop calls.
192 - (libev) take advantage of signalfd on GNU/Linux systems.
193 - (libev) document that the signal mask might be in an unspecified
194 state when using libev's signal handling.
195 - (libev) take advantage of some GNU/Linux calls to set
196 cloexec/nonblock on fd creation, to avoid race conditions.
197 - implement internal glue code to interface more efficiently
198 with AnyEvent.
199
200 3.7 Fri Jul 17 16:49:16 CEST 2009
201 - add EV::loop_verify and EV::loop_depth.
202 - use output filehandle for i/o watchers waiting
203 for EV_WRITE, otherwise input filehandle.
204 - use common schmorp.h header.
205 - add EV::Timer->remaining.
206 - allow for subclassing of EV::Loop (see the exciting
207 EV::Loop::Async module for an example).
208 - added EV::invoke_pending and EV::pending_count.
209
210 - (libev) ev_unloop and ev_loop wrongly used a global variable to
211 exit loops, instead of using a per-loop variable.
212 - (libev) the ev_set_io_collect_interval interpretation has changed.
213 - add new functionality: EV::invoke_pending, EV::pending_count.
214 - add $timer->remaining.
215 - add EV::loop_depth.
216 - (libev) calling unloop in fork/prepare watchers will no longer poll
217 for new events.
218 - (libev) use GetSystemTimeAsFileTime instead of _timeb on windows,
219 for slightly higher accuracy.
220 - (libev) actually 0-initialise struct sigaction when installing
221 signals.
222
223 3.6 Tue Apr 28 02:50:37 CEST 2009
224 - keepalive(0) could decrease the refcount of the loop
225 permanently.
226 - add ev_suspend/ev_resume, also make ev_now_update
227 accessible via the XS API.
228 - most EV::<eventtype> constants were missing and have been
229 added :/.
230 - add EV::VERSION_MAJOR/VERSION_MINOR constants.
231 - (libev) multiple timers becoming ready within an event loop
232 iteration will be invoked in the "correct" order now.
233 - (libev) do not leave the event loop early just because we have
234 no active watchers, fixing a problem when embedding a kqueue
235 loop that has active kernel events but no registered watchers
236 (reported by blacksand blacksand).
237 - (libev) correctly zero the idx values for arrays, so destroying
238 and reinitialising the default loop actually works (patch by
239 Malek Hadj-Ali).
240 - (libev) new EV::CUSTOM revents flag for use by applications.
241 - (libev) add documentation section about priorites.
242 - (libev) add a glossary to the dcoumentation.
243 - (libev) extend the ev_fork description slightly.
244 - (libev) optimize a jump out of call_pending.
245 - t/03_keepalive could fail when there was no actual error.
246
247 3.53 Sun Feb 15 02:38:20 CET 2009
248 - (libev) on win32, the event loop creation could randomly fail
249 due to an initialised variable having the wrong value.
250 - (libev) probe for CLOCK_REALTIME support at runtime as well and
251 fall back to gettimeofday if there is an error, to support older
252 operating systems with newer header files/libraries.
253 - prefer gettimeofday over clock_gettime by default.
254
255 3.52 Wed Jan 7 21:46:14 CET 2009
256 - (libev) fix some issues in the select backend when in fd_set mode.
257 - (libev) due to a thinko, instead of disabling everything but
258 select on the borked OS X platform, everything but select was
259 allowed (reported by Emanuele Giaquinta).
260 - (libev) actually verify that local and remote port are matching in
261 libev's socketpair emulation, which makes denial-of-service
262 attacks harder (but not impossible - it's windows). Make sure
263 it even works under vista, which thinks that getpeer/sockname
264 should return fantasy port numbers.
265
266 3.51 Wed Dec 24 23:01:59 CET 2008
267 - do not cache the arguments passed to callbacks if the refcount
268 indicates that the callback has stolen them.
269 - (libev) try to avoid librt on GNU/Linux.
270 - (libev) check port_getn return value dfferently, might potentially
271 avoid problems.
272 - (libev) fix a bug with stat watchers possibly causing freezes.
273 - (libev) work around OS X 10.5 breaking poll, now select is the
274 only viable choice left on that pile of garbage.
275 - play tester whore: disable some tests that typically fail only
276 on cpan tester machines.
277
278 3.49 Wed Nov 19 11:26:53 CET 2008
279 - fix typos in manpage (Alex Efros).
280 - increase timing even further, for the ever-overloaded cpan-tester
281 machines, and to the detriment of everybody else who wants a fast
282 make test.
283 - possible 5.6 compatibility.
284 - (libev) use inotify even on buggy kernels, but don't rely on it.
285 - (libev) use inotify only as an added hint on network filesystems.
286
287 3.48 Thu Oct 30 09:09:48 CET 2008
288 - (libev) use a generation counter to detect spurious epoll events
289 and recreate the kernel in such a case (sorry, it's slow, but
290 I didn't design epoll...).
291 - (libev) optimise away an EPOLL_CTL_ADD/MOD combo in the epoll
292 backend in some cases.
293 - (libev) use memset to initialise most arrays now and do away
294 with the init functions.
295 - speed up event callback invocation further (~15%), by
296 not creating the object reference each time.
297 - EV::sleep was documented, but not implemented. fun.
298
299 3.45 Tue Oct 21 22:20:39 CEST 2008
300 - (libev) disable inotify usage on linux <2.6.25 (kernel bug).
301 - (libev) ev_embed will now automatically follow fork.
302 - (libev) ev_once will now pass both io and timeout events to
303 the callback when both happen concurrently, instead of giving
304 one precedence.
305 - install C library documentation as EV::libev manpage (sorry, oesi).
306 - (libev) fix a minor performance bug in ev_stat handling.
307
308 3.44 Mon Sep 29 05:16:31 CEST 2008
309 - (libev) add EV::now_update and $loop->now_update.
310
311 3.431 Sun Jul 13 00:19:02 CEST 2008
312 - made the EV::embed callback optional again. reported by
313 Vladimir Timofeev.
314
315 3.43 Tue Jul 8 20:56:31 CEST 2008
316 - disabled warnings in EV.pm, the CHECK issue is now understood
317 and harmless.
318
319 3.42 Mon May 26 07:36:46 CEST 2008
320 - (libev) work around another bug in windows perls and
321 windows itself: failed connects do NOT set read or write
322 flags in select, but this version of libev will.
323
324 3.41 Thu May 22 01:39:40 CEST 2008
325 - (libev) fix many heap-related bugs (timers, periodics).
326 - (libev) improve timing stability of timers and periodics.
327 - expose ev_loop_verify to perl code.
328 - clarify documentation for periodic reschedule callbacks.
329 - verify that the passed callback argument is indeed a code
330 reference, for earlier error reporting and a nice calling
331 speed increase (as well as saving memory).
332
333 3.4 Tue May 20 21:51:55 CEST 2008
334 - (libev) work around both a windows bug and a bug in perl's
335 select on windows when not waiting for any file descriptors.
336 - bundle ev.pod into the tarball, just to increase its size
337 (and for the poor internetless person).
338
339 3.33 Sun May 18 12:43:04 CEST 2008
340 - (libev) use numerous enhancements such as a more
341 cache-friendly 4-heap and heap index caching for timers.
342 - remove undocumented ev_timer->at accessor.
343
344 3.31 Wed Apr 16 20:48:59 CEST 2008
345 - (libev) post-last-minute fix for ev_poll.c problem.
346
347 3.3 Wed Apr 16 19:04:47 CEST 2008
348 - (libev) linux eventfd support.
349 - (libev) inline more with C99 compilers.
350 - (libev) work around a number of bugs in valgrind.
351 - (libev) work around broken realloc on openbsd and darwin.
352 - added example to EV::MakeMaker manpage.
353 - add async_pending method.
354
355 3.2 Wed Apr 2 17:08:16 CEST 2008
356 - "ported" again to the Microsoft "C" language.
357 - relax testsuite timing for the benefit of freebsd users once more.
358 - fix EVAPI's ev_time and ev_sleep macros.
359 - (libev) fix select backend on 64 bit architetcures.
360 - (libev) ev_loop flags are now local to each invocation.
361
362 3.1 Sat Mar 8 11:41:14 CET 2008
363 - add ev_sync_* and ev_fork_* to EVAPI.h.
364 - provide EV::Embed->sweep method.
365 - new watcher type: async (not very useful in perl).
366
367 3.0 Mon Jan 28 13:23:11 CET 2008
368 - upgrade to libev-3.0.
369 - change child handler to incorporate tracing flag.
370
371 2.01 Mon Dec 31 01:59:19 CET 2007
372 - found a minor problem in the testsuite that is only
373 caught by new Test::Harness versions (reported by Andreas
374 König).
375
376 2.0 Sat Dec 22 17:47:03 CET 2007
377 - no longer force kqueue when enabled, enable it
378 on more systems (as its now by default not used on most).
379 - expose fork watchers.
380 - switch to libev's MULTIPLICITY API.
381 - use a slightly different include file name strategy.
382 - get rid of (unused) libevent emulation.
383 - 5% watcher management speedup due to callback optimisation
384 when inline closures are used, 5% slowdown due to multiplicity.
385 - very minimal support for dynamic event loops and embed watchers.
386 - fix name of prepare start/stop methods.
387 - create and export EV::sleep and EV::set_*_collect_interval.
388 - fix typos in manpage (Alex Efros).
389
390 1.86 Tue Dec 18 02:36:57 CET 2007
391 - add periodic->at methods.
392
393 1.85 Fri Dec 14 20:32:40 CET 2007
394 - further optimise epoll backend by adding a heuristic that
395 avoids EPOLL_CTL_DEL calls if possible.
396 - EV::signal->start was not async-signal safe.
397 - optimise start/stop when the fd hasn't changed.
398
399 1.8 Tue Dec 11 22:17:46 CET 2007
400 - API version 3:0.
401 - reduced fudge factor to zero for select, poll, epoll
402 and kqueue: your system better be posix-compliant
403 even in its extensions :->
404 - improve long-term numerical stability in periodic watchers
405 by introducing a separate offset value instead of reusing at.
406 - recalculate real/monotonic clocks before blocking fully
407 to avoid blocking for longer than necessary.
408 - fix bugs in the heap functions. this rarely lead to illegal
409 heap orderings.
410
411 1.72 Sat Dec 8 15:31:26 CET 2007
412 - add dummy loop arguments to some EVAPI functions
413 so that clients can use EV_A and EV_DEFAULT.
414 - expose ev_clear_pending.
415 - renamed trigger to invoke.
416
417 1.71 Fri Dec 7 19:10:24 CET 2007
418 - changed/implemented idle watcher priority.
419 - allow out-of-range priorities to be set.
420 - fix ->priority to actually work on started watchers.
421 - improved testsuite.
422
423 1.6 Wed Dec 5 15:06:20 CET 2007
424 - add a missing SPAGAIN.
425 - ripped out EV::DNS, use EV::ADNS for a better backend.
426 - make ev_time callable from EVAPI.h.
427 - add EV::loop_count.
428 - some space optimisations.
429
430 1.5 Wed Nov 28 20:19:09 CET 2007
431 - add inotify backend.
432 - make testsuite even less sensible to timing issues,
433 add more stat tests.
434 - add ->attr, ->prev, ->stat calls to stat watcher.
435
436 1.4 Tue Nov 27 17:35:27 CET 2007
437 - work around a linux 2.4 kernel bug in child handlers.
438 - implement stat watcher interface.
439 - implement fork watcher interface.
440 - io->set did not keep the fh alive.
441 - actively check signal numbers/names to be valid.
442 - cleanups, minor fixes, new bugs.
443 - work around windows bugs in the testsuite.
444
445 1.3 Sun Nov 25 10:46:57 CET 2007
446 - stopping idle/check/prepare watchers could cause data corruption.
447 - implement and document EV::once.
448 - improved documentation, verify that netbsd indeed has the only
449 working kqueue implementation (out of darwin, freebsd, netbsd and
450 openbsd). Praise them!
451 - fix the data method so it might work.
452 - expose ev_ref/ev_unref to the C API.
453 - expose ref/unref in form of the ->keepalive method to perl.
454 - minor bugfixes and portability fixes.
455
456 1.2 Thu Nov 22 05:44:09 CET 2007
457 - disable kqueue by default on !netbsd, as its broken on freebsd,
458 darwin and openbsd and thus almost everywhere.
459 - add some allowance in t/01_timer.t for the uneven monotonic
460 vs. realtime clock tick on at least freebsd.
461 - add -lsocket -lnsl on solaris in case the perl guy forgot to
462 configure them.
463
464 1.1 Wed Nov 21 06:08:48 CET 2007
465 - improved timer test to include periodics and
466 withstand small timing variations.
467 - many minor tweaks to libev.
468
469 1.0 Fri Nov 16 14:51:59 CET 2007
470 - require AnyEvent update if AnyEvent is installed.
471 - add solaris 10 port-based backend.
472 - add child_ns and fix check_ns.
473 - treat yes/no as enforcement, not as hint, when configuring,
474 documentation update (reported by Andy Grundman).
475
476 0.9 Wed Nov 14 22:24:49 CET 2007
477 - changed LIBEV_METHODS to LIBEV_FLAGS and the
478 way this is used inside libev.
479 - many, many bugfixes.
480 - add unloop constants.
481 - add timer test.
482 - ev_loop will now terminate immediately when no watchers are active.
483
484 0.8 Mon Nov 12 02:28:46 CET 2007
485 - fix "testsuite" again :().
486 - fix check/idle/prepare/child watcher stop.
487 - enourmously many fixes.
488 - rewritten select backend (mostly for win32).
489 - cache socket handles on win32.
490 - provide considerably finer control over configuration.
491
492 0.7 Fri Nov 9 20:37:58 CET 2007
493 - move AnyEvent adaptor into the AnyEvent module.
494 - use private copy of evdns.[ch].
495 - many minor fixes.
496
497 0.6 Thu Nov 8 18:23:43 CET 2007
498 - (libev) better native win32 support.
499 - fix idle watchers.
500 - implement and document periodic reschedule callbacks.
501 - do not run dns test on !linux platforms (actually to exclude win32).
502 - fix (unused in EV :) poll backend.
503
504 0.51 Tue Nov 6 19:50:22 CET 2007
505 - fix kqueue/poll compilation issue.
506 - work around design issues in kqueue.
507 - enable kqueue by default, seems to work.
508
509 0.5 Tue Nov 6 17:37:44 CET 2007
510 - add signal and pid mutators.
511 - add rstatus/rpid accessors.
512 - updated libev (lower cost for clock monotonic).
513 - support event priorities.
514 - try to find SIG_SIZE on perls that don't have it (Slaven Rezic).
515 - improved signal handling, fixed child watchers.
516 - experimentally add kqueue backend, completely untested.
517 - ported to cygwin and native win32.
518
519 0.1 Thu Nov 1 18:29:22 CET 2007
520 - replaced libevent by libev (total rewrite).
521 - many bugfixes w.r.t. libevent.
522 - new watcher types: periodic, check, prepare, child, idle.
523 - performance optimisations.
524 - added interactive configuration.
525 - added fork support.
526
527 0.03 Mon Oct 29 20:52:50 CET 2007
528 - add timed_io convenience constructors.
529 - improve documentation.
530 - support signal names in addition to signal numbers.
531 - support signal anyevent watchers.
532 - vastly improved testsuite (its all relative :).
533 - add EV::MakeMaker, beginning of C-level API.
534 - force strings to byte form.
535
536 0.02 Sun Oct 28 07:40:21 CET 2007
537 - call $EV::DIED in case a callback throws an exception.
538 - add const char * to typemap for possible 5.6 compatibility.
539
540 0.01 Sat Oct 27 19:10:18 CEST 2007
541 - initial release.
542
543 0.00 Fri Oct 26 11:12:57 CEST 2007
544 - original version; cloned from JSON::XS
545