class RSpec::Support::ReentrantMutex
Allows a thread to lock out other threads from a critical section of code, while allowing the thread with the lock to reenter that section.
Based on Monitor as of 2.2 - github.com/ruby/ruby/blob/eb7ddaa3a47bf48045d26c72eb0f263a53524ebc/lib/monitor.rb#L9
Depends on Mutex
, but Mutex
is only available as part of core since 1.9.1:
exists - http://ruby-doc.org/core-1.9.1/Mutex.html dne - http://ruby-doc.org/core-1.9.0/Mutex.html
@private
Public Class Methods
Source
# File lib/rspec/support/reentrant_mutex.rb, line 17 def initialize @owner = nil @count = 0 @mutex = Mutex.new end
Public Instance Methods
Source
# File lib/rspec/support/reentrant_mutex.rb, line 23 def synchronize enter yield ensure exit end
Private Instance Methods
Source
# File lib/rspec/support/reentrant_mutex.rb, line 35 def enter @mutex.lock unless @mutex.owned? @count += 1 end
Source
# File lib/rspec/support/reentrant_mutex.rb, line 40 def exit unless @mutex.owned? raise ThreadError, "Attempt to unlock a mutex which is locked by another thread/fiber" end @count -= 1 @mutex.unlock if @count == 0 end