1``tornado.locks`` -- Synchronization primitives 2=============================================== 3 4.. versionadded:: 4.2 5 6Coordinate coroutines with synchronization primitives analogous to 7those the standard library provides to threads. These classes are very 8similar to those provided in the standard library's `asyncio package 9<https://docs.python.org/3/library/asyncio-sync.html>`_. 10 11.. warning:: 12 13 Note that these primitives are not actually thread-safe and cannot 14 be used in place of those from the standard library's `threading` 15 module--they are meant to coordinate Tornado coroutines in a 16 single-threaded app, not to protect shared objects in a 17 multithreaded app. 18 19.. automodule:: tornado.locks 20 21 Condition 22 --------- 23 .. autoclass:: Condition 24 :members: 25 26 Event 27 ----- 28 .. autoclass:: Event 29 :members: 30 31 Semaphore 32 --------- 33 .. autoclass:: Semaphore 34 :members: 35 36 BoundedSemaphore 37 ---------------- 38 .. autoclass:: BoundedSemaphore 39 :members: 40 :inherited-members: 41 42 Lock 43 ---- 44 .. autoclass:: Lock 45 :members: 46 :inherited-members: 47