Class: RSpec::Support::ReentrantMutex Private

Do not use. This class is for internal use only.

Relationships & Source Files
Inherits:	Object
Defined in:	rspec-support/lib/rspec/support/reentrant_mutex.rb

Overview

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/Mutex.html
dne    - http://ruby-doc.org/core-1.9/Mutex.html

Class Method Summary

.new ⇒ ReentrantMutex constructor Internal use only

Instance Method Summary

#synchronize Internal use only
#enter private

See additional method definition at line 35.
#exit private

See additional method definition at line 40.

Instance Method Details

#enter (private)

See additional method definition at line 35.

[ GitHub ]

# File 'rspec-support/lib/rspec/support/reentrant_mutex.rb', line 48


def enter
  @mutex.lock unless @mutex.owned?
  @count += 1
end

#exit (private)

See additional method definition at line 40.

[ GitHub ]

# File 'rspec-support/lib/rspec/support/reentrant_mutex.rb', line 54


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

#synchronize

[ GitHub ]

# File 'rspec-support/lib/rspec/support/reentrant_mutex.rb', line 23


def synchronize
  enter
  yield
ensure
  exit
end