Bytes()

size_t Spices::MemoryPool::Bytes ( size_t index )

static

Determine how much bytes freelist should process the memory block with given index.

Parameters

[in]

index

freelist index.

Returns

Returns bytes of freelist index.

Definition at line 134 of file MemoryPool.cpp.

    {
        static constexpr int group_array[4] = { 16, 56, 56, 56 };
 
        // align up to 8 (8 - 128 B)
        if (index < 16)
        {
            return 8 * (index + 1);
        }
 
        // align up to 16 (128B - 1024 B)
        else if(index < 16 + 56)
        {
            return 16 * (index + 1 - group_array[0]) + 128;
        }
 
        // align up to 128 (1 - 8 KB)
        else if (index < 16 + 56 + 56)
        {
            return 128 * (index + 1 - group_array[0] - group_array[1]) + 1024;
        }
 
        // align up to 1024 (8 - 64 KB)
        else if (index < 16 + 56 + 56 + 56)
        {
            return 1024 * (index + 1 - group_array[0] - group_array[1] - group_array[2]) + 8 * 1024;
        }
 
        // align up to 8KB (64 - 256 KB)
        else if (index < 16 + 56 + 56 + 56 + 24)
        {
            return 8 * 1024 * (index + 1 - group_array[0] - group_array[1] - group_array[2] - group_array[3]) + 64 * 1024;
        }
 
        else
        {
            SPICES_CORE_ERROR("Access invalid free_lits index")
            return 8 * 1024;
        }
    }