C ++ garbage collection mechanism

StandardC ++There is no garbage collection mechanism:

1)No common base class

C ++ is developed from C. It allows direct pointer operations and conversion of one type to another. For a pointer, it cannot know the type it actually points; java or C # both have a common base class.

 

2)System overhead

The system overhead caused by garbage collection does not conform to the efficient features of C ++, making it not suitable for the underlying work.

 

3)Memory consumption

C ++ generates very little memory in the age, and the garbage collection mechanism needs to occupy more memory.

 

4)Alternative Method

C ++ has destructor, smart pointer, and reference count to manage resource release, which is not urgent for GC.