Question

我的用法与

我在此试图修改他的方案。我是视窗地和陈列型的游客,因此,我希望我没有做任何事情。

import ctypes, subprocess
from random import randint
import os
SYNCHRONIZE=0x00100000
PROCESS_QUERY_INFORMATION=0x0400
INFINITE = -1
numprocs = 5
handles = {}

class Err(BaseException): pass

for i in xrange(numprocs):
    sleeptime = randint(5,10)
    p = subprocess.Popen([r"c:MinGWmsys1.0insleep.exe", str(sleeptime)], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=False)
    h = ctypes.windll.kernel32.OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, False, p.pid)
    handles[h] = p.pid
    print "Spawned Process %d" % p.pid

while len(handles) > 0:
    print "Waiting for %d children..." % len(handles)
    arrtype = ctypes.c_long * len(handles)
    handle_array = arrtype(*handles.keys())
    ret = ctypes.windll.kernel32.WaitForMultipleObjects(len(handle_array), handle_array, False, INFINITE)
    h = handle_array[ret]
    print "Process %d done" % handles[h]
    i = ctypes.c_int(0)
    pi = ctypes.pointer(i)
    if ctypes.windll.kernel32.GetExitCodeProcess(h, pi) == 0:
    err = ctypes.windll.kernel32.GetLastError()
        raise Err("GetExitCodeProcess: %d" % (err))
    print "Status code is: %d" % (i)
    if ctypes.windll.kernel32.CloseHandle(h) == 0:
    err = ctypes.windll.kernel32.GetLastError()
    raise Err("CloseHandle: %d" % (err))
    del handles[h]
print "All done!

但是,在我执政的时候,我失败了:

Traceback (most recent call last):
  File "test.py", line 30, in <module>
    raise Err("GetExitCodeProcess: %d" % (err))
__main__.Err: GetExitCodeProcess: 6

看来,error 6 is ERR_INVALID_HANDLE 。但是,我不敢肯定的是,如果我发表以下意见,则要求获得<条码>PROCESS_questRY_INFORMATION的许可和<条码>CloseHandle(>的打字。 GetExitCodeProcess()。

任何想法? 在等待一些进程之后,我如何获得地位法?

Answer 1

采用这种硬墙法(与你一样,只有一些 in子固定下来,可以睡觉。移除:

import ctypes, subprocess
from random import randint
import os
SYNCHRONIZE=0x00100000
PROCESS_QUERY_INFORMATION=0x0400
INFINITE = -1
numprocs = 5
handles = {}

class Err(BaseException): pass

for i in xrange(numprocs):
    sleeptime = randint(5,10)
    p = subprocess.Popen([r"sleep.exe", str(sleeptime)], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=False)
    h = ctypes.windll.kernel32.OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, False, p.pid)
    handles[h] = p.pid
    print "Spawned Process %d" % p.pid

while len(handles) > 0:
    print "Waiting for %d children..." % len(handles)
    arrtype = ctypes.c_long * len(handles)
    handle_array = arrtype(*handles.keys())
    ret = ctypes.windll.kernel32.WaitForMultipleObjects(len(handle_array), handle_array, False, INFINITE)
    h = handle_array[ret]
    print "Process %d done" % handles[h]
    i = ctypes.c_int(0)
    pi = ctypes.pointer(i)
    if ctypes.windll.kernel32.GetExitCodeProcess(h, pi) == 0:
        err = ctypes.windll.kernel32.GetLastError()
        raise Err("GetExitCodeProcess: %d" % (err))
    print "Status code is: %d" % i.value
    if ctypes.windll.kernel32.CloseHandle(h) == 0:
        err = ctypes.windll.kernel32.GetLastError()
        raise Err("CloseHandle: %d" % (err))
    del handles[h]

print "All done!"

给我这一产出:

C:	mppyt>python -V
Python 2.7.3

C:	mppyt>python a.py
Spawned Process 4368
Spawned Process 268
Spawned Process 5792
Spawned Process 4744
Spawned Process 4484
Waiting for 5 children...
Process 5792 done
Status code is: 0
Waiting for 4 children...
Process 4484 done
Status code is: 0
Waiting for 3 children...
Process 268 done
Status code is: 0
Waiting for 2 children...
Process 4368 done
Status code is: 0
Waiting for 1 children...
Process 4744 done
Status code is: 0
All done!

因此,它似乎正在发挥作用。问题究竟是何在? 你们使用哪位顾问(是Vista)? 你们是否拥有最新版本(2.7.3)? 你们的“ep”是否打破了某种?? 你们是否试图另谋?

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