向量的自定义分配器示例代码 [英] Custom allocator sample code for vector

问题描述

我正在寻找std :: vector的任何自定义分配器示例代码。


谢谢。


-

Alex Vinokur
http://mathforum.org/ library / view / 10978.html
http://sourceforge.net / users / alexvn

I am looking for any custom allocator sample code for std::vector.

Thanks.

--
Alex Vinokur
http://mathforum.org/library/view/10978.html
http://sourceforge.net/users/alexvn

推荐答案

" Alex Vinokur" <人**** @ big-foot.com>在消息中写道

news：2n *********** @ uni-berlin.de ...

"Alex Vinokur" <al****@big-foot.com> wrote in message
news:2n***********@uni-berlin.de...

我正在寻找任何自定义分配器示例代码为std :: vector。

I am looking for any custom allocator sample code for std::vector.

http://www.josuttis.com/libbook/memo...lloc1.cpp.html

Sharad Kala <无****************** @ yahoo.com>在消息新闻中写道：2n *********** @ uni-berlin.de ...

"Sharad Kala" <no******************@yahoo.com> wrote in message news:2n***********@uni-berlin.de...

Alex Vinokur <人**** @ big-foot.com>在消息中写道
新闻：2n *********** @ uni-berlin.de ...

"Alex Vinokur" <al****@big-foot.com> wrote in message
news:2n***********@uni-berlin.de...

我正在寻找std的任何自定义分配器示例代码： ：vector。

I am looking for any custom allocator sample code for std::vector.

http://www.josuttis.com/libbook/memo...lloc1.cpp.html

谢谢。


在该示例中，我们可以看到方法''allocate''和''deallocate''被调用。

但方法''构造''和'' destroy''没有被调用。

什么时候应该''构造''和''破坏''被调用？

-

Alex Vinokur
http://mathforum.org/library/view/10978 .html
http://sourceforge.net/users/alexvn

Thanks.

In that sample we can see that methods ''allocate'' and ''deallocate'' were invoked.
But methods ''construct'' and ''destroy'' were not invoked.
When should ''construct'' and ''destroy'' be invoked?
--
Alex Vinokur
http://mathforum.org/library/view/10978.html
http://sourceforge.net/users/alexvn

" Alex Vinokur" <人**** @ big-foot.com>在消息中写道

news：2n ************ @ uni-berlin.de ...

"Alex Vinokur" <al****@big-foot.com> wrote in message
news:2n************@uni-berlin.de...

什么时候应该' 'construct''和''destroy''被调用？

When should ''construct'' and ''destroy'' be invoked?

分配器必须提供构造和销毁操作。您可能需要

来查看20.1.5（分配器要求）。


构造用于初始化分配有值的内存。这是

基本上是对新的展示位置的调用。因此，当在容器中创建

对象时，基本上会调用构造。

Destroy只是调用对象的析构函数。


-Sharad

An allocator has to provide a construct and destruct operation. You may want
to take a look at 20.1.5 (Allocator requirements).

Construct is used to initialize the memory allocated with a value. This is
basically a call to placement new. So basically construct is invoked when an
object is created in the container.
Destroy simply calls the destructor for the object.

-Sharad

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