Performance of C++ Bit-vector Implementations

摘要

This paper describes an experimental study to compare the performance of various dynamically resizable bit-vector implementations for the C++ programming language. We compare the std: :vector from the Standard Template Library (STL), boost::dynamic_bitset from Boost, Qt: : QBitArray from QT Software, and BitMagic's bm: :bvector<> with one another. We also compare std: :vector from the STL with these because it is a dynamically resizable vector implementation that has been suggested to be an acceptable alternative for std: : vector. We describe the test data and the methods that were applied to measure memory use and processing time. This lays a foundation for comparing other parts of the different C++ libraries. The results are presented and discussed in terms of the differences in the implementations of these data structures. Although the results reported in this article is specific to the mentioned C++ libraries, the techniques used to measure and compare the performance of the different libraries go beyond C++ bit-vectors and may be used more generally.