79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
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#ifndef __KMEM_H__
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#define __KMEM_H__
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#include <sys/queue.h>
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#include <sys/spinlock.h>
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typedef struct Page {
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uint32_t refcount; // Number of references
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uint32_t pincount; // Pin count (HW, Software)
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uint32_t flags; // Flags
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uint32_t _unused;
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} Page;
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/*
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* Page Allocator
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*/
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void PAlloc_Init();
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void PAlloc_AddRegion(uintptr_t start, uintptr_t len);
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void *PAlloc_AllocPage();
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void PAlloc_Retain(void *pg);
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void PAlloc_Release(void *pg);
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/*
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* XMem Memory Mapping Region
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*/
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typedef struct XMem XMem;
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void XMem_Init();
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XMem *XMem_New();
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void XMem_Destroy(XMem *xmem);
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uintptr_t XMem_GetBase(XMem *xmem);
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uintptr_t XMem_GetLength(XMem *xmem);
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bool XMem_Allocate(XMem *xmem, uintptr_t length);
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/*
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* Slab Allocator
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*/
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#define SLAB_NAMELEN 32
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typedef struct SlabElement {
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LIST_ENTRY(SlabElement) free;
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} SlabElement;
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typedef struct Slab {
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uintptr_t objsz;
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uintptr_t align;
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XMem *xmem;
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Spinlock lock;
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uint64_t objs;
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uint64_t freeObjs;
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LIST_HEAD(SlabElementHead, SlabElement) freeList;
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// Debugging
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uint64_t allocs;
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uint64_t frees;
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char name[SLAB_NAMELEN];
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LIST_ENTRY(Slab) slabList;
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} Slab;
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void Slab_Init(Slab *slab, const char *name, uintptr_t objsz, uintptr_t align);
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void *Slab_Alloc(Slab *slab);
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void Slab_Free(Slab *slab, void *obj);
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#define DECLARE_SLAB(_type) \
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_type *_type##_Alloc(); \
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void _type##_Free(_type *obj);
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#define DEFINE_SLAB(_type, _pool) \
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_type *_type##_Alloc() { \
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return (_type *)Slab_Alloc(_pool); \
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} \
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void _type##_Free(_type *obj) { \
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Slab_Free(_pool, obj); \
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}
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#endif /* __KMEM_H__ */
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