class MemoryAllocator: public NonCopyable
{
private:
+ enum BlockType
+ {
+ UNDECIDED,
+ BUFFER,
+ IMAGE
+ };
+
struct Pool
{
MemoryType type = UNKNOWN_MEMORY;
std::vector<unsigned> free_blocks;
+ int largest_free_buffer = -1;
+ int largest_free_image = -1;
bool can_consolidate = false;
};
{
int region = -1;
bool allocated = false;
+ BlockType type = UNDECIDED;
std::size_t offset = 0;
std::size_t size = 0;
int prev = -1;
std::size_t default_region_size = 0;
std::size_t direct_alloc_threshold = 0;
std::size_t min_alignment = 256;
+ std::size_t buffer_image_granularity = 131072;
std::vector<Pool> pools;
std::vector<Region> regions;
std::vector<Block> blocks;
~MemoryAllocator();
private:
- unsigned find_memory_pool(unsigned, MemoryType);
+ unsigned find_memory_pool(unsigned, MemoryType) const;
unsigned create_region(unsigned, size_t, bool);
- std::vector<unsigned>::iterator lower_bound_by_size(std::vector<unsigned> &, std::size_t);
- unsigned allocate(std::size_t, std::size_t, unsigned, MemoryType);
+ std::vector<unsigned>::iterator lower_bound_by_size(std::vector<unsigned> &, std::size_t) const;
+ std::size_t get_alloc_offset(const Block &, std::size_t, std::size_t, BlockType) const;
+ void update_largest_free(Pool &);
+ unsigned allocate(std::size_t, std::size_t, unsigned, MemoryType, BlockType);
unsigned split_block(unsigned, std::size_t);
void consolidate(unsigned);
void merge_block_with_next(unsigned);