d343041caa
Introduce explicit abstractions for different mapping types, handling the instantiation, forking, pagefaults and freeing of anonymous memory, direct physical mappings, shared memory and physically contiguous anonymous memory as separate types, making region.c more generic. Also some other genericification like merging the 3 munmap cases into one. COW and SMAP safemap code is still implicit in region.c.
27 lines
835 B
C
27 lines
835 B
C
|
|
#ifndef _MEMTYPE_H
|
|
#define _MEMTYPE_H 1
|
|
|
|
struct vmproc;
|
|
struct vir_region;
|
|
struct phys_region;
|
|
|
|
typedef struct mem_type {
|
|
char *name; /* human-readable name */
|
|
int (*ev_new)(struct vir_region *region);
|
|
void (*ev_delete)(struct vir_region *region);
|
|
int (*ev_reference)(struct phys_region *pr);
|
|
int (*ev_unreference)(struct phys_region *pr);
|
|
int (*ev_pagefault)(struct vmproc *vmp, struct vir_region *region,
|
|
struct phys_region *ph, int write);
|
|
int (*ev_resize)(struct vmproc *vmp, struct vir_region *vr, vir_bytes len);
|
|
int (*writable)(struct phys_region *pr);
|
|
int (*ev_sanitycheck)(struct phys_region *pr, char *file, int line);
|
|
int (*ev_copy)(struct vir_region *vr, struct vir_region *newvr);
|
|
u32_t (*regionid)(struct vir_region *vr);
|
|
int (*refcount)(struct vir_region *vr);
|
|
} mem_type_t;
|
|
|
|
#endif
|
|
|