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track time that jobs spend beyond their timeslice and compensate

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This commit is contained in:
Darren Ranalli 2007-04-24 19:33:49 +00:00
parent 67da79e374
commit ba78c5139f
1 changed files with 18 additions and 0 deletions
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18
direct/src/showbase/JobManager.py
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@ -27,6 +27,9 @@ class JobManager:
# how many timeslices to give each job; this is used to efficiently implement
# the relative job priorities
self._jobId2timeslices = {}
# how much time did the job use beyond the allotted timeslice, used to balance
# out CPU usage
self._jobId2overflowTime = {}
# this is a generator that we use to give high-priority jobs more timeslices
self._jobIdGenerator = None
self._highestPriority = Job.Priorities.Normal
@ -48,6 +51,8 @@ class JobManager:
self._pri2jobIds[pri].append(jobId)
# record the job's relative timeslice count
self._jobId2timeslices[jobId] = pri
# init the overflow time tracking
self._jobId2overflowTime[jobId] = 0.
# reset the jobId round-robin
self._jobIdGenerator = None
if len(self._jobId2pri) == 1:
@ -69,6 +74,8 @@ class JobManager:
job._cleanupGenerator()
# remove the job's timeslice count
self._jobId2timeslices.pop(jobId)
# remove the overflow time
self._jobId2overflowTime.pop(jobId)
if len(self._pri2jobId2job[pri]) == 0:
del self._pri2jobId2job[pri]
if pri == self._highestPriority:
@ -152,6 +159,14 @@ class JobManager:
if pri is None:
# this job is no longer present
continue
# check if there's overflow time that we need to make up for
overflowTime = self._jobId2overflowTime[jobId]
timeLeft = endT - globalClock.getRealTime()
if overflowTime >= timeLeft:
self._jobId2overflowTime[jobId] = max(0., overflowTime-timeLeft)
# don't run any more jobs this frame, this makes up
# for the extra overflow time that was used before
break
job = self._pri2jobId2job[pri][jobId]
gen = job._getGenerator()
if __debug__:
@ -185,6 +200,9 @@ class JobManager:
# we've run out of time
#assert self.notify.debug('timeslice end: %s, %s' % (endT, globalClock.getRealTime()))
job.suspend()
overflowTime = globalClock.getRealTime() - endT
if overflowTime > self.getTimeslice():
self._jobId2overflowTime[jobId] += overflowTime
if __debug__:
job._pstats.stop()
break