如何從python中的WMI獲取64位值

Question

當我運行以下代碼時：

def get_process_info(pid):
    c = wmi.WMI(namespace='root\\cimv2')
    obj = c.Win32_Process(ProcessId = pid)[0]
    print "VirtualSize:", obj.wmi_property('VirtualSize').type
    print "VirtualSize:", obj.wmi_property('VirtualSize').Value

def get_perf_info(pid):
    c = wmi.WMI(namespace='root\\cimv2')
    obj = c.Win32_PerfFormattedData_PerfProc_Process(IDProcess = pid)[0]
    print "PrivateBytes:", obj.wmi_property('PrivateBytes').type
    print "PrivateBytes:", obj.wmi_property('PrivateBytes').Value

對於使用大量內存的進程，我得到了這個：

VirtualSize: uint64
VirtualSize: 5015498752
PrivateBytes: uint64
PrivateBytes: 4294967295

請注意，兩者都列為64位值，但PrivateBytes值為0xFFFFFFFF。 如果我使用“WMI Explorer”，我可以看到PrivateBytes值大於32位：

我的問題是如何以完整的64位榮耀訪問PrivateBytes？

除了這個WMI模塊之外，還有其他方法可以從python中讀取WMI嗎？

Answer 1

您可以使用wmic為WMI提供命令行界面：

def find_privatebytes(pid):
    with os.popen('wmic process list full /format:csv') as csvfile:
        reader = csv.reader(csvfile, delimiter=',', quotechar='"')
        crow = 0
        col_pid = 0
        col_pb  = 0

        for row in reader:
            if len(row) == 0:
                continue
            if crow == 0:                
                col_pid = row.index("ProcessId")
                col_pb  = row.index("PrivatePageCount")
                crow += 1
            elif int(row[col_pid]) == pid:
                return int(row[col_pb])
        return 0