Dark Horse programmer----Memory management of four--"Autorelease Automatic release Pool"

Memory Management Four--autorelease automatic release poolBasic use of 1.autorelease

• This object method places the object in an auto-release pool ;
• When the auto-release pool is destroyed , a release operation is made for all objects in the pool;
• This method returns the object itself ;
• After this method is called, the value of the object counter does not change until the auto-release pool is destroyed and the object is released once.

Benefits of 2.autorelease

• Without the time when the object of concern was destroyed;
• Do not care when to call the release operation;

use of 3.autorelease note

• Objects that occupy large memory do not use autoreleasecasually;
• Objects that consume less memory use autorelease without much impact ;

4. Wrong wording: Wild pointer error

• Call Alloc after calling the Autorelease, followed by the release of the call;
• multiple calls to autoreleasein succession;

5. Automatic release of the pool detail description

• During the operation of the iOS program, countless pools are created that are present in the stack structure (advanced).
• When an object calls the Autorelease method, the object is placed at the top of the stack;

other uses of 6.autorelease

• The system's own method contains no alloc, new, copy, indicating that the returned objects are autorelease;

• There are often some class methods in development that quickly create an already autorelease object:

7. Automatic release of pool creation

• iOS5.0 ago
• iOS5.0 start

Dark Horse programmer----Memory management of four--"Autorelease Automatic release Pool"