Class: DangoMutex

Inherits:
Mutex show all
Defined in:
lib/dango/dango_mutex.rb

Overview

Mutexクラスの名前情報機能追加

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mutex_name = nil) ⇒ DangoMutex

Returns a new instance of DangoMutex.



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# File 'lib/dango/dango_mutex.rb', line 12

def initialize(mutex_name = nil)
  @mutex_name = mutex_name.to_s
  @lock_name = ""
  super()
end

Instance Attribute Details

#lock_name ⇒ Object (readonly)

Returns the value of attribute lock_name.



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# File 'lib/dango/dango_mutex.rb', line 18

def lock_name
  @lock_name
end

#mutex_name ⇒ Object (readonly)

Returns the value of attribute mutex_name.



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# File 'lib/dango/dango_mutex.rb', line 18

def mutex_name
  @mutex_name
end

Instance Method Details

#timeout_sync(sec = 10, lock_name = "") ⇒ Object

タイムアウトする排他処理



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# File 'lib/dango/dango_mutex.rb', line 21

def timeout_sync(sec = 10, lock_name = "")
  ret = nil
  begin
    timeout(sec, DangoFrameworkMutexTimeoutException) do
      self.synchronize do
        @lock_name = lock_name
        ret = yield
      end
    end
    
  rescue DangoFrameworkMutexTimeoutException, Timeout::Error, TimeoutError
    
    # なぜかDangoFrameworkMutexTimeoutException以外の例外クラスが飛ぶことがあるので
    if $!.class == DangoFrameworkMutexTimeoutException
      error_msg = ""
    else
      error_msg = "#{$!.class}:"
    end
    
    locked_msg = ""
    ObjectSpace.each_object(DangoMutex) do |object|
      if object.locked?
        locked_msg += "#{object.mutex_name.to_s}(#{object.lock_name.to_s}) "
      end
    end
    
    error_msg += "DangoFrameworkMutexTimeoutException " + 
                 "self=#{self.mutex_name}(#{lock_name})\n" + 
                 "locked_mutex=#{locked_msg}\n" + 
                 "#{$!.message}\n" + 
                 "#{$!.backtrace.pretty_inspect}"
    
    raise(DangoFrameworkMutexTimeoutException, error_msg)
    
  rescue Exception
#      puts "#{$!.class} #{$!.message}\n#{$!.backtrace.pretty_inspect}"
    
    raise
  end
  
  ret
end