minix/servers/vm/memtype.h

   1
   2 #ifndef _MEMTYPE_H
   3 #define _MEMTYPE_H 1
   4
   5 struct vmproc;
   6 struct vir_region;
   7 struct phys_region;
   8
   9 typedef void (*vfs_callback_t)(struct vmproc *vmp, message *m,
  10         void *, void *);
  11
  12 typedef struct mem_type {
  13         const char *name;       /* human-readable name */
  14         int (*ev_new)(struct vir_region *region);
  15         void (*ev_delete)(struct vir_region *region);
  16         int (*ev_reference)(struct phys_region *pr, struct phys_region *newpr);
  17         int (*ev_unreference)(struct phys_region *pr);
  18         int (*ev_pagefault)(struct vmproc *vmp, struct vir_region *region,
  19          struct phys_region *ph, int write, vfs_callback_t cb, void *state,
  20          int len, int *io);
  21         int (*ev_resize)(struct vmproc *vmp, struct vir_region *vr, vir_bytes len);
  22         void (*ev_split)(struct vmproc *vmp, struct vir_region *vr,
  23                 struct vir_region *r1, struct vir_region *r2);
  24         int (*writable)(struct phys_region *pr);
  25         int (*ev_sanitycheck)(struct phys_region *pr, const char *file, int line);
  26         int (*ev_copy)(struct vir_region *vr, struct vir_region *newvr);
  27         int (*ev_lowshrink)(struct vir_region *vr, vir_bytes len);
  28         u32_t (*regionid)(struct vir_region *vr);
  29         int (*refcount)(struct vir_region *vr);
  30         int (*pt_flags)(struct vir_region *vr); /* page table flags */
  31 } mem_type_t;
  32
  33 #endif
  34