heap.h File Reference

Heap Handler API. More...

#include <rtems/score/cpu.h>
#include <rtems/score/heapinfo.h>

Go to the source code of this file.

Data Structures
struct	Heap_Block
	Description for free or used blocks. More...
struct	Heap_Control
	Control block used to manage a heap. More...
struct	Heap_Area
	Heap area structure for table based heap initialization and extension. More...

Macros
#define	HEAP_PROTECTION_HEADER_SIZE   0
#define	HEAP_BLOCK_HEADER_SIZE   (2 * sizeof(uintptr_t) + HEAP_PROTECTION_HEADER_SIZE)
	The block header consists of the two size fields (Heap_Block::prev_size and Heap_Block::size_and_flag).

Typedefs
typedef struct Heap_Control	Heap_Control
typedef struct Heap_Block	Heap_Block
typedef uintptr_t(*	Heap_Initialization_or_extend_handler) (Heap_Control *heap, void *area_begin, uintptr_t area_size, uintptr_t page_size_or_unused)
	Heap initialization and extend handler type. More...

Functions
uintptr_t	_Heap_Extend (Heap_Control *heap, void *area_begin, uintptr_t area_size, uintptr_t unused)
	Extends the memory available for the heap heap using the memory area starting at area_begin of size area_size bytes. More...
uintptr_t	_Heap_No_extend (Heap_Control *unused_0, void *unused_1, uintptr_t unused_2, uintptr_t unused_3)
	This function returns always zero. More...
RTEMS_INLINE_ROUTINE uintptr_t	_Heap_Align_up (uintptr_t value, uintptr_t alignment)
RTEMS_INLINE_ROUTINE uintptr_t	_Heap_Min_block_size (uintptr_t page_size)
RTEMS_INLINE_ROUTINE uintptr_t	_Heap_Area_overhead (uintptr_t page_size)
	Returns the worst case overhead to manage a memory area.
RTEMS_INLINE_ROUTINE uintptr_t	_Heap_Size_with_overhead (uintptr_t page_size, uintptr_t size, uintptr_t alignment)
	Returns the size with administration and alignment overhead for one allocation.

Detailed Description

Heap Handler API.