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better timeslicing

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This commit is contained in:
Darren Ranalli 2007-04-19 01:48:11 +00:00
parent 01b6acdcfe
commit 301c6d9aea
1 changed files with 39 additions and 31 deletions
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62
direct/src/showbase/GarbageReport.py
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@ -10,7 +10,8 @@ import gc
class FakeObject: class FakeObject:
pass pass
def _createGarbage(): def _createGarbage(num=1):
for i in xrange(num):
a = FakeObject() a = FakeObject()
b = FakeObject() b = FakeObject()
a.other = b a.other = b
@ -79,36 +80,39 @@ class GarbageReport(Job):
if self._args.verbose: if self._args.verbose:
self.notify.info('getting referrers...') self.notify.info('getting referrers...')
for i in xrange(self.numGarbage): for i in xrange(self.numGarbage):
byNum, byRef = parent._getReferrers(self.garbage[i]) yield None
for result in self._getReferrers(self.garbage[i]):
yield None
byNum, byRef = result
self.referrersByNumber[i] = byNum self.referrersByNumber[i] = byNum
self.referrersByReference[i] = byRef self.referrersByReference[i] = byRef
if (not (i & 0x0F)):
yield None
# grab the referents (pointed to by garbage) # grab the referents (pointed to by garbage)
if self.numGarbage > 0: if self.numGarbage > 0:
if self._args.verbose: if self._args.verbose:
self.notify.info('getting referents...') self.notify.info('getting referents...')
for i in xrange(self.numGarbage): for i in xrange(self.numGarbage):
byNum, byRef = self._getReferents(self.garbage[i]) yield None
for result in self._getReferents(self.garbage[i]):
yield None
byNum, byRef = result
self.referentsByNumber[i] = byNum self.referentsByNumber[i] = byNum
self.referentsByReference[i] = byRef self.referentsByReference[i] = byRef
if (not (i & 0x0F)):
yield None
# find the cycles # find the cycles
if self._args.findCycles and self.numGarbage > 0: if self._args.findCycles and self.numGarbage > 0:
if self._args.verbose: if self._args.verbose:
self.notify.info('detecting cycles...') self.notify.info('detecting cycles...')
for i in xrange(self.numGarbage): for i in xrange(self.numGarbage):
newCycles = self._getCycles(i, self.cycleSets) yield None
for newCycles in self._getCycles(i, self.cycleSets):
yield None
self.cycles.extend(newCycles) self.cycles.extend(newCycles)
# if we're not doing a full report, add this cycle's IDs to the master set # if we're not doing a full report, add this cycle's IDs to the master set
if not self._args.fullReport: if not self._args.fullReport:
for cycle in newCycles: for cycle in newCycles:
self.cycleIds.update(set(cycle))
if (not (i & 0x0F)):
yield None yield None
self.cycleIds.update(set(cycle))
s = ['===== GarbageReport: \'%s\' (%s items) =====' % ( s = ['===== GarbageReport: \'%s\' (%s items) =====' % (
self._args.name, self.numGarbage)] self._args.name, self.numGarbage)]
@ -130,12 +134,14 @@ class GarbageReport(Job):
digits = 0 digits = 0
n = numGarbage n = numGarbage
while n > 0: while n > 0:
yield None
digits += 1 digits += 1
n /= 10 n /= 10
digits = digits digits = digits
format = '%0' + '%s' % digits + 'i:%s \t%s' format = '%0' + '%s' % digits + 'i:%s \t%s'
for i in xrange(numGarbage): for i in xrange(numGarbage):
yield None
id = garbageIds[i] id = garbageIds[i]
objStr = safeRepr(self.garbage[id]) objStr = safeRepr(self.garbage[id])
maxLen = 5000 maxLen = 5000
@ -143,47 +149,39 @@ class GarbageReport(Job):
snip = '<SNIP>' snip = '<SNIP>'
objStr = '%s%s' % (objStr[:(maxLen-len(snip))], snip) objStr = '%s%s' % (objStr[:(maxLen-len(snip))], snip)
s.append(format % (id, itype(self.garbage[id]), objStr)) s.append(format % (id, itype(self.garbage[id]), objStr))
if (not (i & 0x7F)):
yield None
if self._args.findCycles: if self._args.findCycles:
s.append('\n===== Garbage Cycles =====') s.append('\n===== Garbage Cycles =====')
for i in xrange(len(self.cycles)): for i in xrange(len(self.cycles)):
s.append('%s' % self.cycles[i])
if (not (i & 0x7F)):
yield None yield None
s.append('%s' % self.cycles[i])
if self._args.fullReport: if self._args.fullReport:
format = '%0' + '%s' % digits + 'i:%s' format = '%0' + '%s' % digits + 'i:%s'
s.append('\n===== Referrers By Number (what is referring to garbage item?) =====') s.append('\n===== Referrers By Number (what is referring to garbage item?) =====')
for i in xrange(numGarbage): for i in xrange(numGarbage):
s.append(format % (i, self.referrersByNumber[i]))
if (not (i & 0x7F)):
yield None yield None
s.append(format % (i, self.referrersByNumber[i]))
s.append('\n===== Referents By Number (what is garbage item referring to?) =====') s.append('\n===== Referents By Number (what is garbage item referring to?) =====')
for i in xrange(numGarbage): for i in xrange(numGarbage):
s.append(format % (i, self.referentsByNumber[i]))
if (not (i & 0x7F)):
yield None yield None
s.append(format % (i, self.referentsByNumber[i]))
s.append('\n===== Referrers (what is referring to garbage item?) =====') s.append('\n===== Referrers (what is referring to garbage item?) =====')
for i in xrange(numGarbage): for i in xrange(numGarbage):
s.append(format % (i, self.referrersByReference[i]))
if (not (i & 0x7F)):
yield None yield None
s.append(format % (i, self.referrersByReference[i]))
s.append('\n===== Referents (what is garbage item referring to?) =====') s.append('\n===== Referents (what is garbage item referring to?) =====')
for i in xrange(numGarbage): for i in xrange(numGarbage):
s.append(format % (i, self.referentsByReference[i]))
if (not (i & 0x7F)):
yield None yield None
s.append(format % (i, self.referentsByReference[i]))
self._report = s self._report = s
if self._args.log: if self._args.log:
self.printingBegin() self.printingBegin()
for i in xrange(len(self._report)): for i in xrange(len(self._report)):
print self._report[i]
if (not (i & 0x3F)):
yield None yield None
print self._report[i]
# add an extra line at the end for readability # add an extra line at the end for readability
if self.numGarbage > 0: if self.numGarbage > 0:
print '' print ''
@ -232,35 +230,43 @@ class GarbageReport(Job):
# referrers (pointing to garbage) # referrers (pointing to garbage)
# returns two lists, first by index into gc.garbage, second by # returns two lists, first by index into gc.garbage, second by
# direct reference # direct reference
yield None
byRef = gc.get_referrers(obj) byRef = gc.get_referrers(obj)
yield None
# look to see if each referrer is another garbage item # look to see if each referrer is another garbage item
byNum = [] byNum = []
for referrer in byRef: for referrer in byRef:
yield None
try: try:
num = self.garbage.index(referrer) num = self.garbage.index(referrer)
byNum.append(num) byNum.append(num)
except: except:
#num = GarbageReport.NotGarbage #num = GarbageReport.NotGarbage
pass pass
return byNum, byRef yield byNum, byRef
def _getReferents(self, obj): def _getReferents(self, obj):
# TODO: make this a generator
# referents (pointed to by garbage) # referents (pointed to by garbage)
# returns two lists, first by index into gc.garbage, second by # returns two lists, first by index into gc.garbage, second by
# direct reference # direct reference
yield None
byRef = gc.get_referents(obj) byRef = gc.get_referents(obj)
yield None
# look to see if each referent is another garbage item # look to see if each referent is another garbage item
byNum = [] byNum = []
for referent in byRef: for referent in byRef:
yield None
try: try:
num = self.garbage.index(referent) num = self.garbage.index(referent)
byNum.append(num) byNum.append(num)
except: except:
#num = GarbageReport.NotGarbage #num = GarbageReport.NotGarbage
pass pass
return byNum, byRef yield byNum, byRef
def _getCycles(self, index, cycleSets=None): def _getCycles(self, index, cycleSets=None):
# TODO: make this a generator
# detect garbage cycles for a particular item of garbage # detect garbage cycles for a particular item of garbage
assert self.notify.debugCall() assert self.notify.debugCall()
# returns list of lists, sublists are garbage reference cycles # returns list of lists, sublists are garbage reference cycles
@ -272,6 +278,7 @@ class GarbageReport(Job):
rootId = index rootId = index
stateStack.push(([rootId], rootId, 0)) stateStack.push(([rootId], rootId, 0))
while True: while True:
yield None
if len(stateStack) == 0: if len(stateStack) == 0:
break break
candidateCycle, curId, resumeIndex = stateStack.pop() candidateCycle, curId, resumeIndex = stateStack.pop()
@ -279,6 +286,7 @@ class GarbageReport(Job):
print 'restart: %s root=%s cur=%s resume=%s' % ( print 'restart: %s root=%s cur=%s resume=%s' % (
candidateCycle, rootId, curId, resumeIndex) candidateCycle, rootId, curId, resumeIndex)
for index in xrange(resumeIndex, len(self.referentsByNumber[curId])): for index in xrange(resumeIndex, len(self.referentsByNumber[curId])):
yield None
refId = self.referentsByNumber[curId][index] refId = self.referentsByNumber[curId][index]
if self.notify.getDebug(): if self.notify.getDebug():
print ' : %s -> %s' % (curId, refId) print ' : %s -> %s' % (curId, refId)
@ -298,7 +306,7 @@ class GarbageReport(Job):
stateStack.push((list(candidateCycle), curId, index+1)) stateStack.push((list(candidateCycle), curId, index+1))
stateStack.push((list(candidateCycle) + [refId], refId, 0)) stateStack.push((list(candidateCycle) + [refId], refId, 0))
break break
return cycles yield cycles
class GarbageLogger(GarbageReport): class GarbageLogger(GarbageReport):
"""If you just want to log the current garbage to the log file, make """If you just want to log the current garbage to the log file, make