--- Coro/Changes 2005/12/12 20:38:17 1.120 +++ Coro/Changes 2007/10/08 00:47:19 1.267 @@ -1,13 +1,266 @@ Revision history for Perl extension Coro. +TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO. +TODO: maybe implement a default message channel, very much like Erlang + (which is cool in a lot of important aspects (failures!), + but very lacking in others (higher level ipc)). + +4.1 + - incompatible change: $SIG{__DIE__} and $SIG{__WARN__} will now + be local to each coro (see Coro::State). + - possibly bring back 5.10 compatibility (untested). + - work around stupid (and wrong) warning on 5.10 :(. + - overlay the saved state over the context stack. This saves + a few hundred bytes per coroutine on average and also + speeds up context switching a bit. + - further tune default stack sizes. + - (more) correctly calculate stack usage in coro_rss. + - Coro::Storable::blocking_* did not properly lock + resulting in races between coroutines. + - added Coro::Storable::guard. + +4.03 Sat Oct 6 21:24:00 CEST 2007 + - added Coro::throw method. + - minor code cleanups. + +4.02 Sat Oct 6 02:36:47 CEST 2007 + - fix a very minor per-coroutine memleak (a single codereference). + - fixed a bug where the currently in-use c context would be freed + prematurely (can happen only when programs change the stacksize + or use tracing). + - tracing can no longer keep a coro alive after it terminated. + - do static branch prediction in the common path for gcc. gives + about 2-5% speed improvement here. + +4.01 Fri Oct 5 22:10:49 CEST 2007 + - instead of recreating *a* standard output handle we simply + use STDOUT, which is faster and hopefully more robust. + +4.0 Fri Oct 5 12:56:00 CEST 2007 + - incompatibly changed Coro::Storable::freeze. + - major new feature: added Coro::Debug, for interactive coroutine + debugging, tracing and much more. + - major bug fix: unbelievable, but true: $_, $/ and many other + "saved" variables actually weren't being saved. This has been fixed, + of course, while increasing performance while losing all the save + flags. + - save flags are gone, and all the api functions dealing with them. + - added Coro::Semaphore::adjust. + - added Coro::Util::fork_eval. + - added Coro::Storable::{nfreeze,blocking_{freeze,nfreeze}}. + - added Coro::killall. + - reduce initial stack sizes to allow for "micro-coroutines". + - better async_pool resource management, moved parts of async_pool + handling to XS (major speed improvement). + - actually croak before modifying important data structures. + - refuse to transfer while compiling. + - possibly support eval EXPR better now. + - enable assembly per default on linux+bsd x86+amd64. + - all internal members were renamed _something for easier subclassing. + - many minor tweaks. + +3.63 Wed May 16 14:10:06 CEST 2007 + - implement handcoded assembly for x86/amd64 SVR ABI. + +3.62 Fri Apr 27 21:36:06 CEST 2007 + - upgrade libcoro (which might set unwind info correctly). + - change default on linux to setjmp/longjmp. + +3.61 Thu Apr 19 12:36:18 CEST 2007 + - Coro::Storable caused an endless loop when thawing invalid + pst's sometimes. + - use a Semaphore in Coro::Storable, as Storable doesn't + seem to be reentrant (although it is documented to + be threadsafe...). + - fix Coro::Signal to bring back the original unreliable + but stateful semantics. + - fixed a lot of typos in Coro.pm (patch submitted by David + Steinbrunner, which applied flawlessly). + +3.6 Sat Apr 14 17:13:31 CEST 2007 + - added some bugfixes to get eg/myhttpd working again. + - added Coro::Storable for often-cede'ing freeze/thaw. + - try to do a clean exit when a coroutine calls exit + (EXPERIMENTAL). + - got rid of indirect call through _coro_init. + - updated the partly antique examples in eg/ to + work again and be a bit less magic, too. + - fixed Coro::Signal semantics to work as documented again. + +3.55 Sun Mar 25 01:20:47 CET 2007 + - add SAVE_DEFFH to save the default filehandle and enable + it by default. + - finally move socket-operations from Coro::Socket to Coro::Handle + to be able to unblock foreign sockets. + - add Coro::State::save_also and guarded_save. + - add count accessor to Coro::Semaphore. + - add Coro::State::cctx_stacksize. + - just for the fun of it, do not rely on implicit context, + which can dramatically improve performance, but people + using windows-process-emulation perls do not care much about + performance. + +3.51 Sun Mar 4 14:18:04 CET 2007 + - fixed a problem when you weakened references to Coro::State's + (patch by Yuval Kogman). + +3.501 Wed Feb 28 12:44:07 CET 2007 + - rename some global symbols as macosx from hell redefines + them without asking. + +3.5 Tue Feb 13 20:22:53 CET 2007 + - do AnyEvent model detection earlier, avoiding problems + caused by first using AnyEvent and later Coro::Event. + - implement and document Coro::Event event objects. + - fix a potential problem in Coro::Event causing crashes. + - initialise PL_comppad when creating a new coroutine, + avoids crashes on early coro destruction. + +3.41 Mon Jan 22 19:19:49 CET 2007 + - readline on Coro::Handle did not support undefined $/, + nor did it deliver partial lines on EOF or error. + - implement malloc fallback for stack allocation because + stupid broken idiotic OSX has a stupid broken + idiotic fits-the-whole-os mmap "implementation" and + my dick feels longer if Coro is portable even to + obsolete platforms. + +3.4 Fri Jan 19 21:52:54 CET 2007 + - remove t/09_timer.t, as it isn't really testing much + but was rather flaky in practise. + - async_pool coro would keep arguments and callback alive until + it was reused. + - cancellation of a coroutine could cause spurious idle calls + in cede_notself. + +3.3 Sat Jan 6 03:45:00 CET 2007 + - implement $coro->on_destroy. + - Coro::Event blocking semantics have been changed, + documented and - hopefully - improved. + - fix nice adding, not subtracting, from priority. + - fix ->prio and api_is_ready (patch by Mark Hinds). + - fixed an assert ("... == prev__cctx->idle_te") + that could errronously trigger. + - fix various large and small memleaks. + - use a (hopefully) more stable cancel implementation + that immediately frees the coroutine data. + - cede/cede_notself return a status now. + - added Coro::guard function. + - added a global coroutine pool for jobs (on my machine, + I can create and execute 48k simple coros/s with async, + and 128k coros with async_pool). + - Coro::AIO now uses the coroutine priority as io priority. + +3.2 Fri Dec 22 05:07:09 CET 2006 + - improve portability to slightly older perls. + - use cleaner coroutine destruction. + - simplify configuration for users. + - optionally (unrecommended) prefer perl functions over + their coro replacements. + +3.11 Tue Dec 5 13:11:24 CET 2006 + - fixed some bogus assert's, but as perl.h disables assert even + without NDEBUG (thank you very much), not too many people should + notice (that did include myself). Andreas König noticed, though :) + - do not save/restore PL_sortcxix on >= 5.9.x, it doesn't seem to have + it. Also noticed by Andreas König :) + - save/restore tainted status. + - verified to pass the testsuite on my 5.9.5. + +3.1 Mon Dec 4 23:03:40 CET 2006 + - INCOMPATIBLE CHANGE: $/ is now per-coroutine (but slow). + - incompatible change: transfer flags are now per-state. + - give a better error message on deadlock. + - document Coro::nready. + - enhanced testsuite. + +3.01 Sun Dec 3 23:47:42 CET 2006 + - forgot to include Coro::Timer. + +3.0 Sun Dec 3 22:57:25 CET 2006 + - the "FINALLY COMPLETELY STABLE" release (coming soon: + the "FAMOUS LAST WORDS" release). + - implement a new stack sharing algorithm, which uses a stack + pool (size currently hardcoded). + - make stack sharing mandatory (it no longer uses a heuristic). + - eval/die no longer cause weird problems under heavy use. + - Coro::Event could cause livelocks if it was used but + no Coro::Event watchers were used. + - Coro::Event now uses asynccheck as prepare does not + check for changed watchers. + - Coro::Event allows multiple waiting coros and will wake up one + per event. + - Coro::Event should be cleaner and more efficient now. + - new utility function Coro::unblock_sub. + - document the sad fact that Event is no longer reentrant. + - putting a coroutine into the ready queue twice could under + some circumstances lead to stack corruption. + - minor incompatibility: subclassing Coro::State is supported + directly now without going through a _coro_state member. + - state/coro switching is much faster now. + - very minor optimisations and code/documentation cleanup. + - avoid problems due to compiler inlining. + - removed timers from Coro::Timer -> use AnyEvent instead. + - replaced Coro::idle coroutine by (cleaner) idle handler. + - updated to newest libcoro. + - implement enhanced support for valgrind. + - implement is_ready and return value for ready. + - removed Coro::Cont, it was a misnomer (it's generators), + and it was somewhat annoying to get it right. Will come back + if somebody asks for it :) + - many ->wait methods and Coro::Event could return + spuriously without the event having happened. + +2.5 Tue Nov 7 12:22:33 CET 2006 + - made Coro::Util, Coro::Select, Coro::Handle and Coro::Socket + use AnyEvent, moved them to Coro/. + - added Coro::LWP which contains all the uglyness required to + make LWP non-blocking. + - should work with perl 5.9.x now (Andreas König made me do it). + - fixed another bug in Coro::Select when the timeout was undef. + - reuse PL_start_env for all coros, saves some memory per coroutine. + - manage PL_top_env differently, hopefully to avoid panic: top_env. + - timeout argument was not properly used in Coro::Socket. + - allow limited forms of subclassing in Coro::Handle/Coro::Socket. + - emulate undocumented(!) functionality of IO::Socket required + by LWP(!!). + - updated eg/lwp to work with newer lwp's. + - remove "FATAL: uncaught exception" prefix. Coroutines that die + kill the whole process, just as exceptions in the main "coroutine" + did already. + +2.1 Wed Nov 1 23:01:13 CET 2006 + - fix a long-standing bug in Coro::Select where select with + zero timeout would instead change the current default filehandle. + - use a simpler and hopefully more robust way to clone padlists + (uses less memory and a perl function instead of our own). + - coro can now create a stack guard area on many architectures. + - Coro::AIO properly reexports additional functions from IO::AIO. + - updated libcoro with a workaround for OS X, + pach and testing by Michael Schwern. + +2.0 Tue Oct 24 05:47:17 CEST 2006 + - support additional aio requests in Coro::AIO. + +1.9 (never properly released due to a glitch) + +1.8 Thu Feb 2 00:59:06 CET 2006 + - applied suggested patch by SAMV to avoid problems during stupid + mark & sweep gc run. + - applied patch by Scott Walters for 5.9.3 compatibility. + +1.7 Tue Dec 27 01:41:58 CET 2005 + - added Coro::AIO, a thin wrapper around IO::AIO. + - improved Makefile.PL explanations. + 1.6 Mon Dec 12 21:30:05 CET 2005 - additionally save PM_curpm might fix as-of-yet - unseen problems with regex matches being attributes to the + unseen problems with regex matches being attributed to the wrong package. - add t/10_bugs.t, which currently checks against imho broken perls that use 0.26MB of stack space per Perl_magic_get - invocation (debian) as opposed ot the 0.0002MB normal - perls use. + invocation (newer linuxes) as opposed to the 0.0002MB perl + normally uses. - make stacksize configurable for the ultimate debian experience. 1.51 Mon Dec 12 18:48:36 CET 2005