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Modern C++ Programming Cookbook

You're reading from   Modern C++ Programming Cookbook Master C++ core language and standard library features, with over 100 recipes, updated to C++20

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Product type Paperback
Published in Sep 2020
Publisher Packt
ISBN-13 9781800208988
Length 750 pages
Edition 2nd Edition
Languages
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Author (1):
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Marius Bancila Marius Bancila
Author Profile Icon Marius Bancila
Marius Bancila
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Toc

Table of Contents (16) Chapters Close

Preface Learning Modern Core Language Features Working with Numbers and Strings FREE CHAPTER Exploring Functions Preprocessing and Compilation Standard Library Containers, Algorithms, and Iterators General-Purpose Utilities Working with Files and Streams Leveraging Threading and Concurrency Robustness and Performance Implementing Patterns and Idioms Exploring Testing Frameworks C Plus Plus 20 Core Features Bibliography Other Books You May Enjoy
Index

Measuring function execution time with a standard clock

In the previous recipe, we saw how to work with time intervals using the chrono standard library. However, we also often need to handle time points. The chrono library provides such a component, representing a duration of time since the epoch of a clock (that is, the beginning of time as defined by a clock). In this recipe, we will learn how to use the chrono library and time points to measure the execution of a function.

Getting ready

This recipe is tightly related to the preceding one, Expressing time intervals with chrono::duration. If you did not go through that recipe previously, you should do that before continuing with this one.

For the examples in this recipe, we will consider the following function, which does nothing, but takes some time to execute:

void func(int const count = 100000000)
{
  for (int i = 0; i < count; ++i);
}

It should go without saying that this function is only meant for...

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