imemory_block_allocator

The base of all memory block allocators. Inherits from traits class etl::successor<imemory_block_allocator>.

Defines the functionality and interface for derived memory block allocators.

The class defines a public non-virtual interface and protected virtual overrides.

A derived class must define these overrides.

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Non-virtual public interface

void* allocate(size_t required_size, size_t required_alignment)

Attempts to allocate a memory block of the required size (in char) and alignment and return a pointer to it.

If the allocator is unable to do this and it has a successor, then the request will be passed on to it, otherwise

ETL_NULLPTR will be returned.

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bool release(const void* const p)

Attempts to release a memory block and returns true if successful.

If the allocator is unable to do this and it has a successor, then the request will be passed on to it, otherwise false

will be returned.

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Virtual protected interface

virtual void* allocate_block(size_t required_size, size_t required_alignment) = 0;

The derived class must implement this function.

It will attempt to allocate a block of the required size. If it is unable to, it must return ETL_NULLPTR.

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virtual bool release_block(const void* const) = 0;

The derived class must implement this function.

It will attempt to release a block. If it is unable to, it must return false.

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Inherited from successor<imemory_block_allocator>

typedef T successor_type;

void set_successor(successor_type& s)

Set the successor.

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successor_type& get_successor() const

Get the successor.

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bool has_successor() const

Do we have a successor?

imemory_block_allocator.h