CHANGES.md

0.17.5 (HEAD)

• Celluloid::ActorSystem moved to Celluloid::Actor::System, and from celluloid/actor_system.rb to celluloid/actor/system.rb
• Added extensible API for defining new SystemEvents, and having them handled... without everyone changing Actor#handle_system_event.
• Deprecated Task::TerminatedError & Task::TimeoutError... Consolidated in exceptions.rb, inherited from Exceptions vs. StandardError.
• General round-up of all "errors" emitted throughout Celluloid, to either be derived from Celluloid::Error or Celluloid::Interruption.
• Added ability to pass a block to Condition#wait which runs a { |value| ... } type block if present, once the value is obtained by waiting.

0.17.0 (2015-07-04)

• Fix $CELLULOID_TEST warnings
• Massive overhaul of test suite, end-to-end.
• Make "Terminating task" log messages debug-level events
• Added .dead? method on actors, as opposite of .alive?
• Added class/module method to access publish outside actors.
• Radical Refactor of Celluloid::InternalPool, and moved it to Celluloid::Group::Pool
• Radical Refactor: *::Group::Pool replaced as default with *::Group::Spawner
• Added rspec-log_split as replacement logger for itemized testing logs.
• *::Task::PooledFibers has been found and made available, and compatible ( sometimes 4x faster than even Task::Fibered )
• GEM EXTRACTION: PoolManager taken out, and implemented in the celluloid-pool gem, separately.
• GEM EXTRACTION: FSM taken out, and implemented in the celluloid-fsm gem, separately.
• GEM EXTRACTION: SupervisionGroup, Supervisor, and related methods taken out, and implemented in the celluloid-supervision gem, separately.
• BREAKING CHANGE: Added Celluloid::Internals and moved several "private" classes into that namespace:
  • CallChain, CPUCounter, Handlers ( and Handle ), Links, Logger, Method, Properties, Registry, Responses, Signals, StackDump, TaskSet, ThreadHandle, UUID.
• BREAKING CHANGE: Changed class names, per convention:
  • Moved Celluloid::TaskFiber to Celluloid::Task::Fibered
  • Moved Celluloid::TaskThread to Celluloid::Task::Threaded
  • Moved Celluloid::EventedMailbox to Celluloid::Mailbox::Evented
  • Moved Celluloid::AbstractProxy to Celluloid::Proxy::Abstract
  • Moved Celluloid::ActorProxy to Celluloid::Proxy::Actor
  • Moved Celluloid::AsyncProxy to Celluloid::Proxy::Async
  • Moved Celluloid::BlockProxy to Celluloid::Proxy::Block
  • Moved Celluloid::CellProxy to Celluloid::Proxy::Cell
  • Moved Celluloid::FutureProxy to Celluloid::Proxy::Future
  • Moved Celluloid::SyncProxy to Celluloid::Proxy::Sync
• GEM EXTRACTION: Internals, Notifications, Probe, and the contents of logging/* have become a celluloid-essentials gem.
• Implement Group::Manager as base for future Group::Unlocker and other such systems traversing ActorSystem#group regularly.
• Reduce number of supervisors instantiated by ActorSystem by consolidating them down to Service::Root container instances.

0.16.0 (2014-09-04)

• Factor apart Celluloid::Cell (concurrent objects) from Celluloid::Actor
• Introduce Celluloid::ActorSystem as an abstraction around the backend actor implementation (idea borrowed from Akka)
• Celluloid::Probe system for monitoring system behavior
• Fix handling of timeouts with Celluloid::EventedMailbox (i.e. Celluloid::IO and Celluloid::ZMQ)
• Add timeout support to Celluloid::Condition
• Obtain actor names via Celluloid::Actor.registered_name and #registered_name to avoid conflicts with the built-in Ruby Class.name method
• Update to timers 4.0.0
• Dynamically resizable pools
• Remove use of core Ruby ThreadGroups
• Simplified CPU core detector
• Better thread names on JRuby for easier debugging
• Thread safety fixes to internal thread pool

0.15.2 (2013-10-06)

• require 'celluloid/test' for at_exit-free testing

0.15.1 (2013-09-06)

• Only raise on nested tasks if $CELLULOID_DEBUG is set

0.15.0 (2013-09-04)

• Remove legacy support for "bang"-method based async invocation
• Generic timeout support with Celluloid#timeout
• Implement recursion detection for #inspect, avoiding infinite loop bugs
• Fix various inheritance anomalies in class attributes (e.g. mailbox_class)
• Avoid letting version.rb define an unusable Celluloid module
• Remove "Shutdown completed cleanly" message that was annoying everyone
• Subclass all Celluloid exceptions from Celluloid::Error
• Log all unhandled messages
• Celluloid::Conditions are now usable ubiquitously, not just inside actors
• Introspection support for number of threads in the Celluloid thread pool
• Use a ThreadGroup to track the threads in the Celluloid thread pool
• Reimplement signal system on top of Conditions
• Add metadata like the current method to Celluloid::StackDumps

0.14.0 (2013-05-07)

• Use a Thread-subclass for Celluloid
  • Implement actor-local variables
  • Add helper methods to the class
• Move IO::Mailbox to EventedMailbox to remove dependency between celluloid-io and celluloid-zmq. This makes it easier to maintain the evented style of Mailbox.
• Install the at_exit handler by default
• Show backtrace for all tasks. Currently only for TaskThread
• Implement mailbox bounds where overflow is logged
• Fix Thread self-join
• Execute blocks on the sender by default
• Fix CPU counter on windows

0.13.0

• API change: Require Celluloid with: require 'celluloid/autostart' to automatically start support actors and configure at_exit handler which automatically terminates all actors.
• API change: use_mailbox has been removed
• API change: finalizers must be declared with "finalizer :my_finalizer"
• Bugfix: receivers don't crash when methods are called incorrectly
• Celluloid::Condition provides ConditionVariable-like signaling
• Shutdown timeout reduced to 10 seconds
• Stack traces across inter-actor calls! Should make Celluloid backtraces much easier to understand
• Celluloid#call_chain_id provides UUIDs for calls across actors
• Give all thread locals a :celluloid_* prefix

0.12.4

• Bugfix: Clear dead/crashed actors out of links
• Bugfix: Exclusive mode was broken
• Bugfix: Celluloid::SupervisionGroup#run was broken
• Celluloid::ClassMethods#proxy_class allows configurable proxies
• Improved error messages for Fiber-related problems
• Better object leakage detection when inspecting
• Use #public_send to dispatch Celluloid methods
• #idle_size and #busy_size for Celluloid::PoolManager

0.12.3

• Bugfix: Ensure exclusive mode works correctly for per-method case
• Bugfix: Exit handlers were not being inherited correctly

0.12.2

• Disable IncidentReporter by default

0.12.1

• Fix bug in unsetting of exclusive mode
• New incident report system for providing better debugging reports
• Revert BasicObject proxies for now... they are causing problems
• String inspect that reveals bare object leaks
• Fix bug reporting proper task statuses
• Initial thread dumper support
• Remove Celluloid#alive? as it cannot be called in any manner that will ever return anything but true, rendering it useless

0.12.0

• Alternative async syntax: actor.async.method in lieu of actor.method! Original syntax still available but will be removed in Celluloid 1.0
• Alternative future syntax: actor.future.method in lieu of future(:method)
• All methods in the Celluloid module are now available on its singleton
• The #join and #kill methods are no longer available on the actor proxy. Please use Celluloid::Actor.join(actor) and .kill(actor) instead.
• Celluloid::Future#ready? can be used to query for future readiness
• Celluloid::Group constant removed. Please use Celluloid::SupervisionGroup
• #monitor, #unmonitor, and #monitoring? provide unidirectional linking
• Linking is now performed via a SystemEvent
• SystemEvents are no longer exceptions. Boo exceptions as flow control!
• Celluloid::Mailbox#system_event eliminated and replaced with Mailbox#<< SystemEvents are now automatically high priority
• The task_class class method can be used to override the class used for tasks, allowing different task implementations to be configured on an actor-by-actor-basis
• Celluloid::TaskThread provides tasks backed by Threads instead of Fibers
• ActorProxy is now a BasicObject
• A bug prevented Celluloid subclasses from retaining custom mailboxes defined by use_mailbox. This is now fixed.
• exclusive class method without arguments makes the whole actor exclusive

0.11.1

• 'exclusive' class method marks methods as always exclusive and runs them outside of a Fiber (useful if you need more stack than Fibers provide)
• Celluloid::PoolManager returns its own class when #class is called, instead of proxying to a cell/actor in the pool.
• #receive now handles SystemEvents internally
• Celluloid::Timers extracted into the timers gem, which Celluloid now uses for its own timers

0.11.0

• Celluloid::Application constant permanently removed
• Celluloid::Pool removed in favor of Celluloid.pool
• Celluloid::Group renamed to Celluloid::SupervisionGroup, old name is still available and has not been deprecated
• Celluloid::ThreadPool renamed to Celluloid::InternalPool to emphasize its internalness
• Support for asynchronously calling private methods inside actors
• Future is now an instance method on all actors
• Async call exception logs now contain the failed method
• MyActor#async makes async calls for those who dislike the predicate syntax
• abort can now accept a string instead of an exception object and will raise RuntimeError in the caller's context

0.10.0

• Celluloid::Actor.current is now the de facto way to obtain the current actor
• #terminate now uses system messages, making termination take priority over other pending methods
• #terminate! provides asynchronous termination

0.9.1

• Recurring timers with Celluloid#every(n) { ... }
• Obtain UUIDs with Celluloid.uuid
• Obtain the number of CPU cores available with Celluloid.cores
• Celluloid::Pool defaults to one actor per CPU core max by default

0.9.0

• Celluloid::Pool supervises pools of actors
• Graceful shutdown which calls #terminate on all actors
• Celluloid::Actor.all returns all running actors
• Celluloid#exclusive runs a high priority block which prevents other methods from executing
• Celluloid.exception_handler { |ex| ... } defines a callback for notifying exceptions (for use with Airbrake, exception_notifier, etc.)

0.8.0

• Celluloid::Application is now Celluloid::Group
• Futures no longer use a thread unless created with a block
• No more future thread-leaks! Future threads auto-terminate now
• Rename Celluloid#async to Celluloid#defer
• Celluloid#tasks now returns an array of tasks with a #status attribute
• Reduce coupling between Celluloid and DCell. Breaks compatibility with earlier versions of DCell.
• Celluloid::FSMs are no longer actors themselves
• Benchmarks using benchmark_suite

0.7.2

• Workaround fiber problems on JRuby 1.6.5.1 in addition to 1.6.5
• Fix class displayed when inspecting dead actors

0.7.1

• More examples!
• Cancel all pending tasks when actors crash
• Log all errors that occur during signaling failures
• Work around thread-local issues on rbx (see 52325ecd)

0.7.0

• Celluloid::Task abstraction replaces Celluloid::Fiber
• Celluloid#tasks API to introspect on running tasks
• Move Celluloid::IO into its own gem, celluloid-io
• Finite state machines with Celluloid::FSM
• Fix bugs in supervisors handling actors that crash during initialize
• Old syntax Celluloid::Future() { ... } deprecated. Please use the #future method or Celluloid::Future.new { ... } to create futures
• New timer subsystem! Bullet point-by-bullet point details below
• Celluloid#after registers a callback to fire after a given time interval
• Celluloid.sleep and Celluloid#sleep let an actor continue processing messages
• Celluloid.receive and Celluloid#receive now accept an optional timeout
• Celluloid::Mailbox#receive now accepts an optional timeout

0.6.2

• List all registered actors with Celluloid::Actor.registered
• All logging now handled through Celluloid::Logger
• Rescue DeadActorError in Celluloid::ActorProxy#inspect

0.6.1

• Celluloid#links obtains Celluloid::Links for a given actor
• The #class method is now proxied to actors
• Celluloid::Fiber replaces the Celluloid.fiber and Celluloid.resume_fiber API
• Use Thread.mailbox instead of Thread.current.mailbox to obtain the mailbox for the current thread

0.6.0

• Celluloid::Application classes for describing the structure of applications built with Celluloid
• Methods of actors can now participate in the actor protocol directly via Celluloid#receive
• Configure custom mailbox types using Celluloid.use_mailbox
• Define a custom finalizer for an actor by defining MyActor#finalize
• Actor.call and Actor.async API for making direct calls to mailboxes
• Fix bugs in Celluloid::Supervisors which would crash on startup if the actor they're supervising also crashes on startup
• Add Celluloid.fiber and Celluloid.resume_fiber to allow extension APIs to participate in the Celluloid fiber protocol

0.5.0

• "include Celluloid::Actor" no longer supported. Use "include Celluloid"
• New Celluloid::IO module for actors that multiplex IO operations
• Major overhaul of Celluloid::Actor internals (see 25e22cc1)
• Actor threads are pooled in Celluloid::Actor::Pool, improving the speed of creating short-lived actors by over 2X
• Classes that include Celluloid now have a #current_actor instance method
• Celluloid#async allows actors to make indefinitely blocking calls while still responding to messages
• Fix a potential thread safety bug in Thread#mailbox
• Experimental Celluloid::TCPServer for people wanting to write servers in Celluloid. This may wind up in another gem, so use at your own risk!
• Magically skip ahead a few version numbers to impart the magnitude of this release. It's my versioning scheme and I can do what I wanna.

0.2.2

• AbortErrors now reraise in caller scope and get a caller-focused backtrace
• Log failed async calls instead of just letting them fail silently
• Properly handle arity of synchronous calls
• Actors can now make async calls to themselves
• Resolve crashes that occur when sending responses to exited/dead callers

0.2.1

• Hack around a bug of an indeterminate cause (2baba3d2)
• COLON!#@!

0.2.0

• Support for future method calls with MyActor#future
• Initial signaling support via MyActor#signal and MyActor#wait
• Just "include Celluloid" works in lieu of "include Celluloid::Actor"
• Futures terminate implicitly when their values are obtained
• Add an underscore prefix to all of Celluloid's instance variables so they don't clash with user-defined ones.

0.1.0

• Fiber-based reentrant actors. Requires Ruby 1.9
• MyActor.new (where MyActor includes Celluloid::Actor) is now identical to .spawn
• Terminate actors with MyActor#terminate
• Obtain current actor with Celluloid.current_actor
• Configurable logger with Celluloid.logger
• Synchronization now based on ConditionVariables instead of Celluloid::Waker
• Determine if you're in actor scope with Celluloid.actor?

0.0.3

• Remove self-referential dependency in gemspec

0.0.1

• Initial release