N3896: Library Foundations for Asynchronous Operations—Christopher Kohlhoff

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Document number: N3896

Date: 2014-01-20

Library Foundations for Asynchronous Operations

by Christopher Kohlhoff

Excerpt:

In this paper, we will first examine how futures can be a poor choice as a fundamental building block of asynchronous operations in C++. The extended std::future brings inherent costs that penalise programs, particularly in domains where C++ use is prevalent due to its low overheads. An asynchronous model based on a pure callback approach, on the other hand, allows efficient composition of asynchronous operations.

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