boost-pool | 易学教程

Custom allocation using boost singleton_pool slower than default

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问题 I wrote custom operator new and operator delete for the class MyOrder. I am allocating memory using boost::singleton pool. Here is the program testing the performance, #include <boost/pool/singleton_pool.hpp> #include <boost/progress.hpp> #include <iostream> #include <new> #include <vector> class MyOrder{ std::vector<int> v1_; std::vector<double> v2_; std::string s1_; std::string s2_; public: MyOrder(std::string s1, std::string s2): s1_(s1), s2_(s2) {} ~MyOrder(){} static void * operator new

boost::pool_allocator needs eight static libraries?

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问题 I tried to add to my project rather limited functionality from the Boost library, namely allocating memory for small objects from a pool with the help of the 'pool_allocator' class, and discovered that I need to add to the project dependendencies to 4 debug static library files and to 4 release static library files. I.e. 8 library file dependencies are needed for a single line like this: boost::container::vector<int, boost::pool_allocator<int> > v; Is there a way to using these classes

How to use boost::pool library to create a custom memory allocator

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问题 I am new to boost and I want to know how exactly the boost::pool libraries can help me in creating a custom memory allocator. And I have two vector of struct objects. First vector is of structure type A, while second vector is of structure type B. How can I reuse the memory allocated to the first vector to the second vector. 回答1: Boost Pool is a library that defines a few allocator types. Obviously, the focus of the library is to provide Pool Allocators. Pool Allocators shine when you

How to use boost::pool library to create a custom memory allocator

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I am new to boost and I want to know how exactly the boost::pool libraries can help me in creating a custom memory allocator. And I have two vector of struct objects. First vector is of structure type A, while second vector is of structure type B. How can I reuse the memory allocated to the first vector to the second vector. Boost Pool is a library that defines a few allocator types. Obviously, the focus of the library is to provide Pool Allocators. Pool Allocators shine when you allocate objects of identical size. Note If your structure A and structure B aren't identical/very similar size you

Boost Pool maximum size

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I am using boost pool as a static memory provider, void func() { std::vector<int, boost::pool_allocator<int> > v; for (int i = 0; i < 10000; ++i) v.push_back(13); } In above code, how we can fix the size of pool, i mean as we know boost::pool provide as a static memory allocator, but i am not able to fix the size of this pool, its keep growing, there should be way to restrict its size. for example i want a pool of 200 chunks only so i can take 200 chunks after that it should though NULL please let me now how to do this I don't think boost pool provides what you want. Actually there are 4 other

Boost Pool maximum size

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问题 I am using boost pool as a static memory provider, void func() { std::vector<int, boost::pool_allocator<int> > v; for (int i = 0; i < 10000; ++i) v.push_back(13); } In above code, how we can fix the size of pool, i mean as we know boost::pool provide as a static memory allocator, but i am not able to fix the size of this pool, its keep growing, there should be way to restrict its size. for example i want a pool of 200 chunks only so i can take 200 chunks after that it should though NULL

How does boost.pool achieve re-use of allocated memory?

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问题 Background My previous question about boost.pool led me to investigate boost.pool in detail, and now I have a supplementary question to finalize my understanding. Prelude This reference states the following about the object pool pattern: The object pool pattern is a software creational design pattern that uses a set of initialized objects kept ready to use, rather than allocating and destroying them on demand. From what I can tell, boost.pool (simplified) implements the object pool pattern by

How does boost.pool achieve re-use of allocated memory?

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Background My previous question about boost.pool led me to investigate boost.pool in detail, and now I have a supplementary question to finalize my understanding. Prelude This reference states the following about the object pool pattern: The object pool pattern is a software creational design pattern that uses a set of initialized objects kept ready to use, rather than allocating and destroying them on demand. From what I can tell, boost.pool (simplified) implements the object pool pattern by means of memory allocation and management mostly based on the size of an element_type , and returns a