Resource acquisition is initialization: Difference between revisions

Revision as of 10:53, 25 October 2023

Revision as of 10:54, 25 October 2023

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Ownership of dynamically allocated objects (memory allocated with <code>new</code> in C++) can also be controlled with RAII, such that the object is released when the RAII (stack-based) object is destroyed. For this purpose, the C++11 standard library defines the [[smart pointer]] classes <code>[[Smart pointer#unique_ptr|std::unique_ptr]]</code> for single-owned objects and <code>[[Smart_pointer#shared_ptr_and_weak_ptr|std::shared_ptr]]</code> for objects with shared ownership. Similar classes are also available through <code>[[auto ptr|std::auto_ptr]]</code> in C++98, and <code>boost::shared_ptr</code> in the [[Boost (C++ libraries)|Boost libraries]].

Also, network resourcesmessages can sendbe messagessent to network resources using RAII. In this case, the RAII object would send a message to a [[Network socket|socket]] at the end of the constructor, when its initialization is completed. It would also send a message at the beginning of the destructor, when the object is about to be destroyed. Such a construct might be used in a client object to establish a connection with a server running in another process.

== Compiler "cleanup" extensions ==