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C++ RAII

C++ reference for c++ raii.

Syntax

std::lock_guard<std::mutex> lock(mutex);
// lock releases when this scope ends

Examples

C++ RAII example

A focused example you can adapt while practising.

std::lock_guard<std::mutex> lock(mutex);
// lock releases when this scope ends

Best practices

  • Start with the smallest working example, then adapt it to your project.
  • Use the language’s standard library and idioms before introducing extra dependencies.

At a glance

Purpose
Systems and general-purpose software
File extension
.cpp · .hpp
Runs in
Compiled native applications
Usually used with
Compiler and standard library

Specifications & further reading

Related C++ documentation

C++ Classes & RAII
Classes group data and functions. Constructors establish valid state. C++ uses RAII: an object owns a resource for its lifetime and releases it in its destructor.C++ structs
C++ reference for c++ structs.C++ class access control
C++ reference for c++ class access control.C++ constructor initializer lists
C++ reference for c++ constructor initializer lists.