148 lines
5.8 KiB
Python
148 lines
5.8 KiB
Python
# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is standalone Firefox Windows performance test.
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#
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# The Initial Developer of the Original Code is Google Inc.
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# Portions created by the Initial Developer are Copyright (C) 2006
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# Annie Sullivan <annie.sullivan@gmail.com> (original author)
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# Ben Hearsum <bhearsum@wittydomain.com> (OS independence)
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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import win32pdh
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import win32pdhutil
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class CounterManager:
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def __init__(self, ffprocess, process, counters=None, childProcess="mozilla-runtime"):
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self.process = process
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self.ffprocess = ffprocess
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self.childProcess = childProcess
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self.registeredCounters = {}
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self.registerCounters(counters)
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# PDH might need to be "refreshed" if it has been queried while the browser
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# is closed
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win32pdh.EnumObjects(None, None, 0, 1)
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def registerCounters(self, counters):
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# self.registeredCounters[counter][0] is a counter query handle
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# self.registeredCounters[counter][1] is a list of tuples, the first
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# member of which is a counter handle, the second a counter path
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for counter in counters:
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self.registeredCounters[counter] = []
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def unregisterCounters(self, counters):
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for counter in counters:
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if counter in self.registeredCounters:
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del self.registeredCounters[counter]
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def getRegisteredCounters(self):
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return keys(self.registeredCounters)
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def updateCounterPathsForChildProcesses(self, counter):
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# Create a counter path for each instance of the child process that
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# is running. If any of these paths are not in our counter list,
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# add them to our counter query and append them to the counter list,
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# so that we'll begin tracking their statistics. We don't need to
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# worry about removing invalid paths from the list, as getCounterValue()
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# will generate a value of 0 for those.
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hq = self.registeredCounters[counter][0]
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win32pdh.EnumObjects(None, None, 0, 1)
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counterListLength = len(self.registeredCounters[counter][1])
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expandedCounterPaths = \
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win32pdh.ExpandCounterPath('\\process(%s*)\\%s' % (self.childProcess, counter))
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for expandedPath in expandedCounterPaths:
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alreadyInCounterList = False
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for singleCounter in self.registeredCounters[counter][1]:
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if expandedPath == singleCounter[1]:
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alreadyInCounterList = True
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if not alreadyInCounterList:
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counterHandle = win32pdh.AddCounter(hq, expandedPath)
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self.registeredCounters[counter][1].append((counterHandle, expandedPath))
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if counterListLength != len(self.registeredCounters[counter][1]):
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try:
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win32pdh.CollectQueryData(hq)
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except:
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return
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def getCounterValue(self, counter):
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# Update counter paths, to catch any new child processes that might
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# have been launched since last call. Then iterate through all
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# counter paths for this counter, and return a combined value.
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aggregateValue = 0
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self.updateCounterPathsForChildProcesses(counter)
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hq = self.registeredCounters[counter][0]
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# This call can throw an exception in the case where all counter paths
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# are invalid (i.e., all the processes have terminated).
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try:
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win32pdh.CollectQueryData(hq)
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except:
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return None
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for singleCounter in self.registeredCounters[counter][1]:
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hc = singleCounter[0]
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try:
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type, val = win32pdh.GetFormattedCounterValue(hc, win32pdh.PDH_FMT_LONG)
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except:
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val = 0
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aggregateValue += val
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return aggregateValue
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def getProcess(self):
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return self.process
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def startMonitor(self):
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# PDH might need to be "refreshed" if it has been queried while the browser
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# is closed
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win32pdh.EnumObjects(None, None, 0, 1)
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# Add the counter path for the default process.
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for counter in self.registeredCounters:
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path = win32pdh.MakeCounterPath((None, 'process', self.process,
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None, -1, counter))
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hq = win32pdh.OpenQuery()
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try:
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hc = win32pdh.AddCounter(hq, path)
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except:
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win32pdh.CloseQuery(hq)
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self.registeredCounters[counter] = [hq, [(hc, path)]]
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self.updateCounterPathsForChildProcesses(counter)
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def stopMonitor(self):
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for counter in self.registeredCounters:
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for singleCounter in self.registeredCounters[counter][1]:
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win32pdh.RemoveCounter(singleCounter[0])
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win32pdh.CloseQuery(self.registeredCounters[counter][0])
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self.registeredCounters.clear()
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