- New upstream release 1.863
- On Cygwin, silently use Mutex in MCE::Channel when Threads is specified for
better performance
- New defer capability in MCE::Signal, which applies to MCE::Shared 1.863;
see POD section labled "DEFER SIGNAL" in MCE::Signal
- Reverted $child->exit back to sending the SIGQUIT signal in MCE::Child now
that MCE::Shared::Server 1.863 defers signal during IPC
- Improved reliability for spawning MCE and MCE::Child inside threads
including nested parallelization, made possible using a global lock
$MCE::_GMUTEX
- Updated signal handling in mce-examples/framebuffer on GitHub
- New upstream release 1.862
- The edge cases regarding signal handling have finally been resolved for
MCE::Child; see mce-examples/framebuffer on GitHub
- New upstream release 1.860
- Signal-handling update release
- Localized input and output record separators in MCE::Channel
- IPC safety in MCE::Child during SIGINT and SIGTERM
- Method $child->exit in MCE::Child now sends the SIGINT signal for extra
reliability with MCE::Shared (previously SIGQUIT)
- New upstream release 1.848
- Improved IO::All::{ File, Pipe, STDIO } output via MCE->print($io, ...),
printf, and say; this resolves a bug introduced in 1.845 when using
App::Cmd::Tester to capture output
- New upstream release 1.847
- Obsolete RedHat MCE-1.840-Sereal-deps.patch file; this patch file is no
longer needed and finally resolved with this release
- PDL random numbers now unique between threads:
see https://www.perlmonks.org/?node_id=1214439
- Replaced "PF_UNIX" with "AF_UNIX" in MCE::Util
- New upstream release 1.845
- Croak if is_joinable, is_running, or join is called by a non-managed
process in MCE::Child; added LIMITATION section to the documentation
- Improved is_joinable, is_running, list_joinable, and list_running in
MCE::Child
- Added example (consumer requests item) to MCE::Channel documentation
- Support the task_end option regardless of whether user_tasks is specified
- Support IO::All::{ File, Pipe, STDIO } for input data including output
via MCE->print($io, ...), printf, and say
- Support gather ⇒ MCE::Candy::out_iter_fh($io) using MCE::Candy
- New upstream release 1.844
- Resolved MCE stalling when specifying max_retries with init_relay, ditto
for loop_timeout with init_relay on UNIX platforms
- Enhanced loop_timeout to handle workers dieing uncontrollably from any
user_tasks (i.e. task_id ≥ 0); previously, only task_id == 0
- Improved IPC on the Windows platform for edge case when a worker is
awaiting input while the manager process is restarting a worker
- MCE, MCE::Child workers exit immediately upon receiving a SIGSEGV signal;
this safeguards IPC from stalling inside the manager process
- Enhanced the _wait_one private function in MCE::Child
- Removed Prima from the list for auto-enabling the posix_exit option; Prima
(since 1.52) is parallel safe during global cleanup
- Reached 100% Pod coverage
- New upstream release 1.843
- Updated results in MCE::Child (Parallel::ForkManager-like demonstration)
- Completed missing interrupt signal-safety for the non-blocking methods in
MCE::Channel::Mutex and MCE::Channel::Threads
- New upstream release 1.841
- Disabled t/04_channel_threads testing on Unix platforms for Perl less than
5.10.1; basically, the MCE::Channel::Threads implementation is not supported
on older Perls unless the OS vendor applied upstream patches (i.e. works on
RedHat/CentOS 5.x running Perl 5.8.x)
- Added LIMITATIONS section to MCE::Channel::Threads
- New upstream release 1.840
New Features
- Added MCE::Mutex::Channel2 providing two locks using a single channel; the
secondary lock is accessible by calling methods with the '2' suffix, e.g.
primary mutex ->lock, ->unlock; secondary mutex ->lock2, ->unlock2
- Added MCE::Channel providing queue-like and two-way communication
supporting threads and processes
- Added MCE::Child and compatibility with Perl 5.8; MCE::Child is based on
MCE::Hobo, but using MCE::Channel for data retrieval without involving a
shared-manager process
- Added MCE::Channel examples { channel1.pl and channel2.pl } using threads
and MCE::Child respectively
Enhancements
- IPC update; removed unnecessary overhead including private methods _sysseek
and _syswrite from MCE::Util (no longer needed)
- Improved MCE->do, now callable by workers and the manager process
- Updated MCE::{ Flow, Grep, Loop, Map, Step, and Stream } documentation on
passing an array reference versus a list for deeply input data
- Updated and re-organized the top-level MCE documentation, particularly
improved clarity for the 'MCE Models' section
- Removed MANIFEST.SKIP
- Update MCE::Channel POD documentation
- New upstream release 1.838
- IPC update, raising reliability across multiple platforms
- Improved hack for the Windows platform for nested MCE sessions
- Added _sysread, _sysseek, _syswrite, and _nonblocking to MCE::Util
- Added barrier option to MCE::Queue: allows one to disable
- New upstream release 1.837
- Seeds the Math::Random::MT::Auto generator automatically when present for
non-threads, similarly to Math::Random and Math::Prime::Util, to
avoid child processes sharing the same seed value as the parent and
each other; the new seed is computed using the current seed
- New upstream release 1.834
- Improved Queue await and dequeue performance on the Windows platform
- Added chameneos-redux parallel demonstrations on Github:
https://github.com/marioroy/mce-examples/tree/master/chameneos
- Rebase Sereal-deps patch
- New upstream release 1.832
- Added LWP::UserAgent to list for enabling posix_exit
- Improved number-sequence generation for big integers
- Improved wantarray support in MCE::Mutex synchronize
- Removed limit check on chunk_size option
- New upstream release 1.830
Bug Fixes
- Fixed MCE and MCE::Relay stalling when setting the input record separator
(see http://www.perlmonks.org/?node_id=1196701)
- Fixed bug with dequeue_nb in MCE::Queue (GH#8)
- Fixed signal handler (GH#9)
Enhancements
- Added Coro and Win32::GUI to list for enabling posix_exit
- Added support for Haiku to get_ncpu in MCE::Util
- Allow gathering to a shared array in MCE::Candy
- Improved CPU count on the AIX platform in MCE::Util
- Improved signal handling, including nested parallel-sessions
- Improved running MCE::Hobo inside MCE workers
- Improved running MCE with PDL
- Refactored logic for MCE->do, bi-directional callback feature
- Preserve lexical type for numbers during IPC: MCE->do and MCE::Queue
- No longer loads threads on the Windows platform in MCE::Signal; this
enables MCE::Hobo 1.827 to spin faster, including lesser memory
consumption (threads isn't required to run MCE::Hobo)
- Removed extra white-space from POD documentation
- Validated MCE on SmartOS
- Rebase Sereal-deps patch
- New upstream release 1.828
- Do not enable barrier mode for Queue on the Windows platform
- Fixed MCE::Mutex::Flock, tmp_file missing script name in path
- Added Curses and Prima to list for enabling the posix_exit option
- Allow a hash as input_data: Core API, MCE::{ Flow, Loop, Step }
- Improved API documentation on MCE models with more synopsis
- Enhanced IPC and signal handling, reduced memory consumption
- Make tmp_dir on demand in MCE::Signal; ditto for sess_dir in MCE
- Load Fcntl, File::Path, Symbol on demand
- New upstream release 1.827
- Do not enable barrier mode in Queue if constructed inside a thread or by
MCE Model (e.g. Step, Stream); ditto for fast => 1 option
- Updated MCE not to croak when running Perl in taint mode via perl -T;
failing -T were MCE::Core::Input::{ Generator, Sequence }, MCE::Signal and
MCE::Util
- Added Denis Fateyev, Felipe Gasper and Paul Howarth to Credits
- New upstream release 1.826
- Performance improvements in MCE::Queue
- Is now safe running MCE with the Wx GUI toolkit (wxWidgets)
- BR:/R: perl(Sereal) unconditionally
- New upstream release 1.824
- Check for EINTR during sysread and syswrite
- Improved reliability when running nested MCE sessions
- Updated MCE::Mutex with Channel and Fcntl implementations
- Calibrated the number of data-channels for IPC
- Completed validation for using MCE with 200+ cores
- Completed validation for running MCE on a box having 100+ cores
- Tuned the number of data-channels for IPC, setting upper limit in
MCE::Core::Input::{ Handle and Sequence } to not impact the OS kernel; the
result is better performance, yet graceful
- New upstream release 1.821
- Improved reliability when running MCE with threads
- Added parallel Net::Pcap and Ping demonstrations on Github:
https://github.com/marioroy/mce-examples/tree/master/network
- Optimized 'dequeue' method in MCE::Queue
- Optimized 'synchronize' method in MCE::Mutex
- New upstream release 1.818
- Updated bin/mce_grep for determining chunk level and chunk size
- Fixed an issue for not seeing STDERR output with '--chunk-level=file'
- Added support for zgrep, zegrep, and zfgrep
- Replaced Sereal with Sereal::Decoder and Sereal::Encoder in Makefile,
inside recommends section; ditto for META files
- Refactored MCE::Queue: merged local and manager code base into one
- Removed t/04_norm_que_local.t and t/04_prio_que_local.t
- Added 'end' method to MCE::Queue
- Updated documentation on dequeue and pending
- Add symlinks for mce_grep variants
- New upstream release 1.817
- Revised the description of max_retries in MCE::Core.pod
- Improved bin/mce_grep with -r parameter:
- If no paths are given, start recursively in the current directory
rather than await data from STDIN
- Set chunk-level accordingly to list mode
- New upstream release 1.815
- Fixed divide-by-zero error in MCE->yield
- Refactored code for the interval option by moving the code to the manager
process, which allows the manager process to accomodate the next available
worker ready to run; previously, a worker taking a long time resulted in
empty time slots
- Revised the description of posix_exit in MCE::Core.pod
- New upstream release 1.813
- Added progress option, a code block for receiving info on progress made;
see MCE::Core.pod for demonstrations accommodating all input data types
- New upstream release 1.812
- Bumped minimum requirement for Sereal to 3.015 when available; added
regression ensuring matching version for Encoder and Decoder
- Add patch to avoid unintentional hard dependencies on Sereal
- New upstream release 1.811
- Fixed bug in MCE::Queue (dequeue_nb) when queue has zero items
- Applied small optimization in MCE::Core::Input::Sequence and Generator
- Added cross-platform template to MCE::Examples for making an executable
- Removed signal handling for XCPU and XFSZ from MCE::Signal
- Imply posix_exit => 1 if Gearman::XS or Gearman::Util is present during
MCE construction
- Added MCE + Gearman demonstrations (xs and non-xs) on Github:
https://github.com/marioroy/mce-examples/tree/master/gearman_xshttps://github.com/marioroy/mce-examples/tree/master/gearman
- Changed kilobytes and megabytes to kibiBytes (KiB) and mebiBytes (MiB)
respectively inside the documentation
Paul Howarth
Jitka Plesnikova
Fedora Release Engineering
Petr Písař