Coroutines and concurrency

• tornado.gen — Generator-based coroutines
  • Decorators
  • Utility functions
  • Legacy interface
• tornado.locks – Synchronization primitives
  • Condition
  • Event
  • Semaphore
  • BoundedSemaphore
  • Lock
• tornado.queues – Queues for coroutines
  • Classes
    • Queue
    • PriorityQueue
    • LifoQueue
  • Exceptions
    • QueueEmpty
    • QueueFull
• tornado.process — Utilities for multiple processes