openstack/deb-python-eventlet
Code Issues Proposed changes

minor updates to README.twisted

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This commit is contained in:
Denis Bilenko
2009-06-27 10:48:38 +07:00
parent af51e05991
commit 886108e868
1 changed files with 5 additions and 5 deletions
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10
README.twisted
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@@ -7,8 +7,8 @@ Eventlet makes asynchronous programming look like synchronous, thus
achieving higher signal-to-noise ratio than traditional twisted programs have. achieving higher signal-to-noise ratio than traditional twisted programs have.
Eventlet on top of twisted provides: Eventlet on top of twisted provides:
* [stable twisted] * stable twisted
* [usable and readable synchronous style] * usable and readable synchronous style
* existing twisted code can be used without any changes * existing twisted code can be used without any changes
* existing blocking code can be used after trivial changes applied * existing blocking code can be used after trivial changes applied
@@ -62,7 +62,7 @@ to call from anywhere:
twistedutil.deferToGreenThread and others based on api.spawn. twistedutil.deferToGreenThread and others based on api.spawn.
2. send(), send_exception(), poll(), ready() methods of coros.event 2. send(), send_exception(), poll(), ready() methods of coros.event
and _unbounded_ coros.queue. and coros.Queue.
3. wait(timeout=0) is identical to poll(). Currently only Proc.wait 3. wait(timeout=0) is identical to poll(). Currently only Proc.wait
supports timeout parameter. supports timeout parameter.
@@ -136,13 +136,13 @@ How does eventlet work
---------------------- ----------------------
Twisted's reactor and eventlet's hub are very similar in what they do. Twisted's reactor and eventlet's hub are very similar in what they do.
Both continuously preform polling on the list of registered descriptors Both continuously perform polling on the list of registered descriptors
and each time a specific event is fired, the associated callback function and each time a specific event is fired, the associated callback function
is called. In addition, both maintain a list of scheduled calls. is called. In addition, both maintain a list of scheduled calls.
Polling is performed by the main loop - a function that both reactor and hub have. Polling is performed by the main loop - a function that both reactor and hub have.
When twisted calls user's callback it's expected to return almost immediately, When twisted calls user's callback it's expected to return almost immediately,
without any blocking I/O calls. Deferreds help there. without any blocking I/O calls.
Eventlet runs the main loop in a dedicated greenlet (MAIN_LOOP). It is the same Eventlet runs the main loop in a dedicated greenlet (MAIN_LOOP). It is the same
greenlet as MAIN if you use join_reactor. Otherwise it's a separate greenlet greenlet as MAIN if you use join_reactor. Otherwise it's a separate greenlet