Page Comparison

Allocates memory from specified segment. Returned memory block will be aligned on a CPU word boundary.

Files

lib_mem.h/lib_mem.c

Prototype

void  *Mem_SegAlloc (const  CPU_CHAR    *p_name,
                            MEM_SEG     *p_seg,
                            CPU_SIZE_T   size,
                            LIB_ERR     *p_err)

Arguments

p_name

Pointer to allocated object name. Used for allocations tracking. May be DEF_NULL.

p_seg

Pointer to segment data from which to allocate memory. Passing DEF_NULL will allocate memory from the general-purpose heap.

size

Size of memory block to allocate, in bytes.

p_err

Pointer to variable that will receive the return error code from this function.

LIB_MEM_ERR_NONE

LIB_MEM_ERR_INVALID_MEM_SIZE

LIB_MEM_ERR_INVALID_MEM_ALIGN

LIB_MEM_ERR_NULL_PTR

LIB_MEM_ERR_SEG_OVF

Returned Value

Pointer to allocated memory block, if successful.

DEF_NULL, otherwise.

Required Configuration

None.

Notes / Warnings

1. The memory block returned by this function will be aligned on a word boundary. In order to specify a specific alignment value, use either Mem_SegAllocExt() or Mem_SegAllocHW().

2. For an usage example of this function, refer to Memory Segments page.