Class: PerfectQueue::BlockingFlag
- Inherits:
-
Object
- Object
- PerfectQueue::BlockingFlag
- Defined in:
- lib/perfectqueue/blocking_flag.rb
Instance Method Summary collapse
-
#initialize ⇒ BlockingFlag
constructor
A new instance of BlockingFlag.
- #reset! ⇒ Object
- #reset_region(&block) ⇒ Object
- #set! ⇒ Object
- #set? ⇒ Boolean
- #set_region(&block) ⇒ Object
- #wait(timeout = nil) ⇒ Object
Constructor Details
#initialize ⇒ BlockingFlag
Returns a new instance of BlockingFlag.
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# File 'lib/perfectqueue/blocking_flag.rb', line 22 def initialize require 'thread' @set = false @mutex = Mutex.new @cond = ConditionVariable.new end |
Instance Method Details
#reset! ⇒ Object
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# File 'lib/perfectqueue/blocking_flag.rb', line 41 def reset! toggled = false @mutex.synchronize do if @set @set = false toggled = true end @cond.broadcast end return toggled end |
#reset_region(&block) ⇒ Object
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# File 'lib/perfectqueue/blocking_flag.rb', line 66 def reset_region(&block) reset! begin block.call ensure set! end end |
#set! ⇒ Object
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# File 'lib/perfectqueue/blocking_flag.rb', line 29 def set! toggled = false @mutex.synchronize do unless @set @set = true toggled = true end @cond.broadcast end return toggled end |
#set? ⇒ Boolean
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# File 'lib/perfectqueue/blocking_flag.rb', line 53 def set? @set end |
#set_region(&block) ⇒ Object
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# File 'lib/perfectqueue/blocking_flag.rb', line 57 def set_region(&block) set! begin block.call ensure reset! end end |
#wait(timeout = nil) ⇒ Object
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# File 'lib/perfectqueue/blocking_flag.rb', line 75 def wait(timeout=nil) @mutex.synchronize do @cond.wait(@mutex, timeout) end self end |