在一批循环内存泄漏？ [英] Memory leak in batch for loop?

问题描述

我写一个批处理脚本，通过每一个文件去在找code文件目录下，并修改它们以某种方式。我完成了任务，我试图约6000文件放在一个大的目录中运行它。在脚本中约40分钟死机了，我得到了很多内存不足的错误从命令提示符，运行脚本，而看任务管理器发现，我的计划是为每循环迭代1MB左右的速度吃内存。所以很自然想我做错了什么我切出一切，我曾写信给隔离问题code。但后来我留下了，除了一个for循环，问题仍然存在一个空文件！

I am writing a batch script that goes through every file in a directory looking for code files and modifies them in some way. After I finished that task I tried to run it on a large directory with about 6,000 files. About 40 minutes in the script crashed and I got lots of out of memory errors from the command prompt, running the script while looking at the task manager showed that my program was eating memory at about a rate of 1MB per loop iteration. So naturally thinking I had done something wrong I cut out all the code that I had written to isolate the problem. But then I was left with an empty file except for a for loop and the problem still persisted!

下面是我跑了一个相当大的目录就像我说的：

Here is what I ran on a fairly large directory like I said:

@echo off
setlocal ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION
set directory=%CD%
for /R "%directory%" %%a in (*.c *.cpp *.h *.idl) do (
    set currentDir=%%~dpa
    pushd !currentDir!
    popd
)

其实我也能修剪下来：

I have actually been able to trim it down to:

@echo off
for /R "%CD%" %%a in (*) do echo

和问题仍然存在。

里还有一批循环内存泄漏或我只是做错了什么？

Is there a memory leak in the batch for loop or am I just doing something wrong?

我运行Windows XP 32位Service Pack 2的虽然我已经测试并确认问题依然美元的Service Pack 3。

I am running Windows XP 32bit Service Pack 2 although I have tested and confirmed the problem is still present in Service Pack 3.

推荐答案

这是没有这么多的答案作为一种解决方法（或重写）。我已经运行脚本，我看到一些内存消耗，这其中有些是不释放，直到脚本结束，但我不靠近每个迭代1 MB得到任何东西。 （就像我@aphoria可以运行在C盘根的脚本：不会对XP SP3和Vista的问题）

This is not so much an answer as a workaround (or rewrite). I have run your script and I see some memory consumption, which some of which is not released until the script finishes, but I do not get anything near 1 MB per iteration. (Just like @aphoria I can run the script on the root of c: without problems on XP SP3 and Vista.)

我建议你关闭任何进程没有必要为脚本，在一个时间上的一个子目录中运行你的脚本。

I suggest that you closing any process not necessary for the script and run your script on one subdirectory at a time.

如果你解决不了这个以任何其他方式，我建议你尝试写在PowerShell中的脚本。

If you cannot solve this in any other manner I suggest you try writing the script in Powershell.

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