servers/vm/vmproc.h

   1
   2 #ifndef _VMPROC_H
   3 #define _VMPROC_H 1
   4
   5 #include <pagetable.h>
   6 #include <arch_vmproc.h>
   7 #include <minix/bitmap.h>
   8 #include <machine/archtypes.h>
   9
  10 #include "vm.h"
  11
  12 struct vmproc;
  13
  14 typedef void (*callback_t)(struct vmproc *who, message *m);
  15
  16 struct vmproc {
  17         struct vm_arch  vm_arch; /* architecture-specific data */
  18         int             vm_flags;
  19         endpoint_t      vm_endpoint;
  20         pt_t            vm_pt;  /* page table data, if VMF_HASPT is set */
  21         vir_bytes       vm_stacktop;    /* top of stack as seen from process */
  22         vir_bytes       vm_offset;      /* offset of addr 0 for process */
  23
  24         /* File identification for cs sharing. */
  25         ino_t vm_ino;           /* inode number of file */
  26         dev_t vm_dev;           /* device number of file system */
  27         time_t vm_ctime;        /* inode changed time */
  28
  29         /* Regions in virtual address space. */
  30         struct vir_region *vm_regions;
  31         int vm_count;
  32
  33         /* Heap for brk() to extend. */
  34         struct vir_region *vm_heap;
  35
  36         bitchunk_t vm_call_mask[VM_CALL_MASK_SIZE];
  37
  38         /* State for requests pending to be done to vfs on behalf of
  39          * this process.
  40          */
  41         callback_t vm_callback;   /* function to call on vfs reply */
  42         int vm_callback_type; /* expected message type */
  43
  44         int vm_slot;            /* process table slot */
  45
  46         union {
  47                 struct {
  48                         cp_grant_id_t gid;
  49                 } open; /* VM_VFS_OPEN */
  50         } vm_state;             /* Callback state. */
  51 #if VMSTATS
  52         int vm_bytecopies;
  53 #endif
  54 };
  55
  56 /* Bits for vm_flags */
  57 #define VMF_INUSE       0x001   /* slot contains a process */
  58 #define VMF_SEPARATE    0x002   /* separate i&d */
  59 #define VMF_HASPT       0x004   /* has private page table */
  60 #define VMF_EXITING     0x008   /* PM is cleaning up this process */
  61 #define VMF_HAS_DMA     0x010   /* Process directly or indirectly granted
  62                                  * DMA buffers.
  63                                  */
  64
  65 #endif