while循环内部线程会导致内存泄漏吗? [英] while-loop inside thread causes memory leak?

问题描述

大家好，

我正在尝试编写我的第一个多线程程序.
我有一个看起来像这样的线程:

Hello everyone,

I''m trying to write my first multithreaded program.
I have a thread that looks like this:

UINT TestThread(LPVOID lpData)
{
    while(true){
        // stuff to do (will be serial communication)
        Sleep(500);
    }
    return 0;
}

我从main像这样调用:

Which I call from main like this:

AfxBeginThread(TestThread,NULL,THREAD_PRIORITY_NORMAL);

问题:调试期间出现内存泄漏:

检测到内存泄漏！
转储对象->
f:\ dd \ vctools \ vc7libs \ ship \ atlmfc \ src \ mfc \ thrdcore.cpp(306):{108}客户端块位于0x0039C728，子类型c0，长68个字节.
$ 0039C728处的一个CWinThread对象，长68个字节

第一次我要处理内存泄漏，因此我用Google搜索并找到了一种方法来定位"泄漏(嗯...用大约5行代码定位就不多了)
遵循 http://www.codeguru.com/forum/showthread.php?t=499952 [ ^ ]，使用断点和 {,, msvcr90d.dll} _crtBreakAlloc ，它指向我作为问题根源的AfxBeginThread行.

如果我不在其中放置一会儿循环，那就很好用了.
我觉得也许我误解了线程应该如何工作的概念:)
因为如果从概念上讲不允许我在其中放置"while"，则线程概念有点松散了它的用途……至少对于我想做的事情.

非常感谢您给出的任何答案，要么解释了如何解决内存泄漏问题，要么为什么我不允许将while(true)放在线程中(或者可能都放在::))


好的，似乎还有一个更根本的问题.如果使用，我也会发生内存泄漏.

Problem: I get a memory leak during debugging:

Detected memory leaks!
Dumping objects ->
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\thrdcore.cpp(306) : {108} client block at 0x0039C728, subtype c0, 68 bytes long.
a CWinThread object at $0039C728, 68 bytes long

First time I''m dealing with memory leaks so I googled and found a way to try to "locate" the leak (well ... not much to locate with about 5 lines of code)
following the instructions on http://www.codeguru.com/forum/showthread.php?t=499952[^], using a breakpoint and {,,msvcr90d.dll}_crtBreakAlloc and it points me to the AfxBeginThread Line as source of the problem.

If I don''t put a while loop in there, it works fine.
I feel like maybe I misunderstood the concept of how threading is supposed to work :)
Because if I''m conceptually not allowed to put the "while" there, the threading concept kind of looses it''s use ... for what I''m trying to do, at least.

Thanks a lot for any answers either explaining how to fix the memory leak problem OR why I''m not allowed to put while(true) in a thread (or maybe both :))


Ok, there seems to be a more fundamental problem. I ALSO get a memory leak if I use.

std::cout << "Starting Thread ..." << std::endl;

现在我真的迷路了，非常感谢您的帮助.

Now I''m really lost, really appreciate any help.

推荐答案

0039C728，长68个字节

第一次我要处理内存泄漏，因此我用Google搜索并找到了一种方法来定位"泄漏(嗯...用大约5行代码定位就不多了)
遵循 http://www.codeguru.com/forum/showthread.php?t=499952 [ ^ ]，使用断点和 {,, msvcr90d.dll} _crtBreakAlloc ，它指向我作为问题根源的AfxBeginThread行.

如果我不在其中放置一会儿循环，那就很好用了.
我觉得也许我误解了线程应该如何工作的概念:)
因为如果从概念上讲不允许我在其中放置"while"，则线程概念有点松散了它的用途……至少对于我想做的事情.

非常感谢您给出的任何答案，要么解释了如何解决内存泄漏问题，要么为什么我不允许将while(true)放在线程中(或者可能都放在::))


好的，似乎还有一个更根本的问题.如果使用，我也会发生内存泄漏.

0039C728, 68 bytes long

First time I''m dealing with memory leaks so I googled and found a way to try to "locate" the leak (well ... not much to locate with about 5 lines of code)
following the instructions on http://www.codeguru.com/forum/showthread.php?t=499952[^], using a breakpoint and {,,msvcr90d.dll}_crtBreakAlloc and it points me to the AfxBeginThread Line as source of the problem.

If I don''t put a while loop in there, it works fine.
I feel like maybe I misunderstood the concept of how threading is supposed to work :)
Because if I''m conceptually not allowed to put the "while" there, the threading concept kind of looses it''s use ... for what I''m trying to do, at least.

Thanks a lot for any answers either explaining how to fix the memory leak problem OR why I''m not allowed to put while(true) in a thread (or maybe both :))


Ok, there seems to be a more fundamental problem. I ALSO get a memory leak if I use.

std::cout << "Starting Thread ..." << std::endl;

现在我真的迷失了，非常感谢任何帮助.

Now I''m really lost, really appreciate any help.

这很简单，如果您没有正确终止线程，则其所有内部内存都会泄漏.正确终止，不会有问题.

This is trivial, if you don''t terminate a thread properly, all of its internal memory will leak. Terminate properly and it won''t be an issue.

尝试将一些数据发送到线程而不是NULL.

Try sending some data to thread instead of NULL.

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