freelist

func (*Allocator) Alloc ¶

func (a *Allocator) Alloc(hint uint64) (uint64, error)

Alloc allocates a single page. hint is a page ID that the caller would like the new page to be close to. If hint is 0, the allocator uses its own heuristics (e.g. lastAlloc).

func (*Allocator) AllocMany ¶

func (a *Allocator) AllocMany(count int, hint uint64) ([]uint64, error)

AllocMany allocates up to count pages in one pass. It returns any allocated IDs even if an error occurs so callers can retire them.

func (*Allocator) Free ¶

func (a *Allocator) Free(id uint64) error

Free adds a page to the freelist.

func (*Allocator) Head ¶

func (a *Allocator) Head() uint64

func (*Allocator) SetFreelistRegion ¶

func (a *Allocator) SetFreelistRegion(pages uint64, radius int)

func (*Allocator) SetHead ¶

func (a *Allocator) SetHead(h uint64)

func (*Allocator) SetPreferAppend ¶

func (a *Allocator) SetPreferAppend(prefer bool)