mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-07-29 14:15:07 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 9

Update docstring of sched, also remove an unused assignment.

Browse source
This commit is contained in:
Georg Brandl 2007-10-08 08:06:05 +00:00
parent 16fd6c4617
commit a970c22166
1 changed files with 6 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

12
Lib/sched.py
View file

@ -16,11 +16,11 @@ integers or floating point numbers, as long as it is consistent.
Events are specified by tuples (time, priority, action, argument). Events are specified by tuples (time, priority, action, argument).
As in UNIX, lower priority numbers mean higher priority; in this As in UNIX, lower priority numbers mean higher priority; in this
way the queue can be maintained as a priority queue. Execution of the way the queue can be maintained as a priority queue. Execution of the
event means calling the action function, passing it the argument. event means calling the action function, passing it the argument
Remember that in Python, multiple function arguments can be packed sequence in "argument" (remember that in Python, multiple function
in a tuple. The action function may be an instance method so it arguments are be packed in a sequence).
The action function may be an instance method so it
has another way to reference private data (besides global variables). has another way to reference private data (besides global variables).
Parameterless functions or methods cannot be used, however.
""" """
# XXX The timefunc and delayfunc should have been defined as methods # XXX The timefunc and delayfunc should have been defined as methods
@ -89,7 +89,7 @@ class scheduler:
exceptions are not caught but the scheduler's state remains exceptions are not caught but the scheduler's state remains
well-defined so run() may be called again. well-defined so run() may be called again.
A questionably hack is added to allow other threads to run: A questionable hack is added to allow other threads to run:
just after an event is executed, a delay of 0 is executed, to just after an event is executed, a delay of 0 is executed, to
avoid monopolizing the CPU when other threads are also avoid monopolizing the CPU when other threads are also
runnable. runnable.
@ -111,7 +111,7 @@ class scheduler:
# Verify that the event was not removed or altered # Verify that the event was not removed or altered
# by another thread after we last looked at q[0]. # by another thread after we last looked at q[0].
if event is checked_event: if event is checked_event:
void = action(*argument) action(*argument)
delayfunc(0) # Let other threads run delayfunc(0) # Let other threads run
else: else:
heapq.heappush(event) heapq.heappush(event)