Class: ActiveRecord::ConnectionAdapters::ConnectionPool::LeaseRegistry

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

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `WeakThreadKeyMap`
Instance Chain: self, `WeakThreadKeyMap`
Inherits:	ActiveRecord::ConnectionAdapters::ConnectionPool::WeakThreadKeyMap `::Object` ActiveRecord::ConnectionAdapters::ConnectionPool::WeakThreadKeyMap ActiveRecord::ConnectionAdapters::ConnectionPool::LeaseRegistry
Defined in:	activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb, activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb

Overview

Thanks to the GVL, the LeaseRegistry doesn’t need to be synchronized on MRI

.new	FIXME: On 3.3 we could use `ObjectSpace::WeakKeyMap` but it currently causes GC crashes: github.com/byroot/rails/pull/3.

#[], #[]=, #clear

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb', line 192


def initialize
  @mutex = Mutex.new
  @map = WeakThreadKeyMap.new
end

See additional method definition at line 186.

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb', line 197


def [](context)
  super || (self[context] = Lease.new)
end

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb', line 203


def clear
  @mutex.synchronize do
    @map.clear
  end
end