memory

Memory Pool Allocators from Jonathan Müller

After I have written a few posts about memory management in C++, I'm very glad to present Jonathan Müller, which will write a guest post about his implementation of the memory library. He will explain us his concepts about his design. Jonathan is known as an expert of memory management in the C++ community. In the  59 episode he presented his ideas to a world wide audiance.

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Pros and Cons of the various Memory Allocation Strategies

In C++ you have the choice between various memory allocation strategies. In addition to the frequently used dynamic memory allocation you have the stack allocation. But you can preallocate the memory at the start time of your program. This can be a fixed sized block or one or more memory pools. Each of these strategies have its pros and cons. Which one, I will answer in this post.

 

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Strategies for the Allocation of Memory

There a lot of different strategies for allocating memory. Programming languages like Python or Java request their memory from the heap at runtime. Of course, C or C++ has also a heap but prefers the stack. But this are by far not so only strategies for allocating memory. You can preallocate memory at the start time of the program as a fixes block or as a pool of memory blocks. This preallocated memory can afterwards used at the runtime of your program. But the key question is. What are the pros and cons of the various strategies to allocate memory?

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Memory Management with std::allocator

What is common between all containers of the Standard Template Library? They have a type parameter Allocator that is by default std::allocator. The job of the allocator is it to manage the lifetime of its elements. That means to allocate and deallocate memory for its elements and to initialize and destruct them.

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Improvements of this Blog

In my post Time for Wishes I asked: "How can I improved my blog?" And here are the answers.

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Tags: memory
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Overloading Operator new and delete 2

I overloaded in the last post operator new and delete. Therefore, it was possible to find memory leaks and get a first hint of the bad guys. My solution had two not so nice properties. With this post, I will overcome them.

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Overloading Operator new and delete 1

It happens quite to often that a C++ application allocates memory but don't deallocate it. This is the job for operator new and delete. Thanks to them both you can explicitly manage the memory management of an application.

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