Question

认为这是我在这里提出的第一个问题，通常会找到我需要的所有答案（所以提前致谢）

好吧我的问题我编写了一个python程序，它将在线程中监视进程并将结果输出到csv文件以供日后使用。这段代码工作得很好我使用win32pdhutil作为计数器，使用WMI，Win32_PerfRawData_PerfProc_Process作为CPU％时间。我现在被要求监视WPF应用程序并专门监视用户对象和GDI对象。

这是我遇到问题的地方，我似乎无法找到任何python支持来收集这两个计数器上的指标。这两个计数器在任务管理器中很容易获得我发现奇怪的是这两个计数器的信息非常少。我特意看着收集它们以查看是否有内存泄漏，我不想在系统上安装除已安装的python之外的任何其他内容。请你帮忙寻找解决方案。

我正在使用python 3.3.1，这将在Windows平台上运行（主要是win7和win8）这是我用来收集数据的代码

def gatherIt(self,whoIt,whatIt,type,wiggle,process_info2):
    #this is the data gathering function thing
    data=0.0
    data1="wobble"
    if type=="counter":
        #gather data according to the attibutes
        try:
            data = win32pdhutil.FindPerformanceAttributesByName(whoIt, counter=whatIt)
        except:
            #a problem occoured with process not being there not being there....
            data1="N/A"

    elif type=="cpu":
       try:
            process_info={}#used in the gather CPU bassed on service
            for x in range(2):
                for procP in wiggle.Win32_PerfRawData_PerfProc_Process(name=whoIt):
                    n1 = int(procP.PercentProcessorTime)
                    d1 = int(procP.Timestamp_Sys100NS)
                    #need to get the process id to change per cpu look...
                    n0, d0 = process_info.get (whoIt, (0, 0))     
                    try:
                        percent_processor_time = (float (n1 - n0) / float (d1 - d0)) *100.0
                        #print whoIt, percent_processor_time
                    except ZeroDivisionError:
                        percent_processor_time = 0.0
                    # pass back the n0 and d0
                    process_info[whoIt] = (n1, d1)
                #end for loop (this should take into account multiple cpu's)
            # end for range to allow for a current cpu time rather that cpu percent over sampleint
            if percent_processor_time==0.0:
                data=0.0
            else:
                data=percent_processor_time
        except:
            data1="N/A"

    else:
        #we have done something wrong so data =0
        data1="N/A"
    #endif
    if data == "[]":
        data=0.0
        data1="N/A"
    if data == "" :
        data=0.0
        data1="N/A"
    if data == " ":
        data=0.0
        data1="N/A"
    if data1!="wobble" and data==0.0:
        #we have not got the result we were expecting so add a n/a
        data=data1
    return data

欢呼声

编辑正确的cpu计时问题，如果有人试图运行它：D

Answer 1

所以经过长时间的搜索，我能够将一些东西混合在一起，从而获得所需的信息。

import time
from ctypes import *
from ctypes.wintypes import *
import win32pdh

# with help from here http://coding.derkeiler.com/Archive/Python/comp.lang.python/2007-10/msg00717.html
# the following has been mashed together to get the info needed

def GetProcessID(name):
    object = "Process"
    items, instances = win32pdh.EnumObjectItems(None, None, object, win32pdh.PERF_DETAIL_WIZARD)
    val = None
    if name in instances :
        tenQuery = win32pdh.OpenQuery()
        tenarray = [ ]
        item = "ID Process"
        path = win32pdh.MakeCounterPath( ( None, object, name, None, 0, item ) )
        tenarray.append( win32pdh.AddCounter( tenQuery, path ) )
        win32pdh.CollectQueryData( tenQuery )
        time.sleep( 0.01 )
        win32pdh.CollectQueryData( tenQuery )
        for tencounter in tenarray:
            type, val = win32pdh.GetFormattedCounterValue( tencounter, win32pdh.PDH_FMT_LONG )
            win32pdh.RemoveCounter( tencounter )
        win32pdh.CloseQuery( tenQuery )
    return val

processIDs = GetProcessID('OUTLOOK') # Remember this is case sensitive
PQI = 0x400
#open a handle on to the process so that we can query it
OpenProcessHandle = windll.kernel32.OpenProcess(PQI, 0, processIDs)
# OK so now we have opened the process now we want to query it
GR_GDIOBJECTS, GR_USEROBJECTS = 0, 1
print(windll.user32.GetGuiResources(OpenProcessHandle, GR_GDIOBJECTS))
print(windll.user32.GetGuiResources(OpenProcessHandle, GR_USEROBJECTS))
#so we have what we want we now close the process handle
windll.kernel32.CloseHandle(OpenProcessHandle)

希望有所帮助

Answer 2

对于GDI计数，我认为一个更简单，更清洁的监视脚本如下：

import time, psutil
from ctypes import *

def getPID(processName):
    for proc in psutil.process_iter():
        try:
            if processName.lower() in proc.name().lower():
                return proc.pid
        except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
            pass
    return None;

def getGDIcount(PID):
    PH = windll.kernel32.OpenProcess(0x400, 0, PID)
    GDIcount = windll.user32.GetGuiResources(PH, 0)
    windll.kernel32.CloseHandle(PH)
    return GDIcount

PID = getPID('Outlook') # Remember this is case sensitive

while True:
    GDIcount = getGDIcount(PID)
    print(f"{time.ctime()}, {GDIcount}")
    time.sleep(1)

如何使用python收集GDI和用户对象的性能指标

2 个答案: