如何使用python杀死资源消耗没有改变的Windows进程？

Question

我有一个python脚本，该脚本测试是否在我的Windows机器上运行任何Firefox进程，然后杀死它们：

import os, subprocess
running_processes = subprocess.check_output('tasklist', shell = True)
if "firefox.exe" in running_processes:
    os.system("TASKKILL /F /IM firefox.exe")

我只想杀死随着时间的流逝，其内存消耗和CPU使用量一直持续的Firefox过程(即不要在一定间隔内发生变化(。

如何在Python中使用常数内存和CPU使用杀死Windows进程？

Answer 1

我当前杀死过时的Windows进程的方法涉及一个函数，该功能可在每个运行过程中返回(过程PID/Process Memory消耗(的元组。

如果元组在两个连续的函数调用之间没有更改，则我通过PID杀死该过程。这种方法有一个限制：需要提前知道(命名(。

。

import os, subprocess, csv, psutil, time
def get_task_memory(process_name):
    running_processes = csv.DictReader(              # Get list of running processes
                             subprocess.check_output(
                             "tasklist /fo csv").splitlines()) 
    PID_list = []
    memory_A = []
    for task in running_processes:                   # Loop through running processes
        if process_name in task.values():
            PID = int(task.values()[2])              # Get process PID
            consumption = task.values()[1]           # Get memory usage of process with PID
            PID_list.append(PID)                     # Create list of PIDs
            memory_A.append(consumption)             # Create list of memory usage
    process_snapshot = zip(PID_list, memory_A)       # Create list of PID:memory usage tuples
    return process_snapshot                          # return tuple for every running process

在一个无尽的循环中，我将此功能连续称为介于两者之间的短暂休息。如果任何特定于过程的元组在整个运行中都是相同的，则相应过程的记忆消耗不会改变 - 现在可以通过PID杀死此过程。

while True:  
    process_name = "phantomjs.exe"                     # PName of process to be monitored
    process_snapshot_A = get_task_memory(process_name) # function call 1
    time.sleep(n)                                      # Wait
    process_snapshot_B = get_task_memory(process_name) # function call 2
    stale_processes = [tuple for tuple in process_snapshot_A if tuple in process_snapshot_B]
    if len(stale_processes) > 0:                       # Stale processes 
        print "stale process found - terminating"
        for PID, memory in stale_processes:            
            stale_process = psutil.Process(PID)        # Get PID
            stale_process.kill()                       # Kill PID
    else:
        pass