32fbbd370c
shared with the kernel, mapped into kernel address space; kernel is notified of its location. kernel segment size is increased to make it fit. - map in kernel and other processes that don't have their own page table using single 4MB (global) mapping. - new sanity check facility: objects that are allocated with the slab allocator are, when running with sanity checking on, marked readonly until they are explicitly unlocked using the USE() macro. - another sanity check facility: collect all uses of memory and see if they don't overlap with (a) eachother and (b) free memory - own munmap() and munmap_text() functions. - exec() recovers from out-of-memory conditions properly now; this solves some weird exec() behaviour - chew off memory from the same side of the chunk as where we start scanning, solving some memory fragmentation issues - use avl trees for freelist and phys_ranges in regions - implement most useful part of munmap() - remap() stuff is GQ's for shared memory
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
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#ifndef _VMPROC_H
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#define _VMPROC_H 1
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#include <pagetable.h>
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#include <arch_vmproc.h>
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#include <minix/bitmap.h>
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#include "vm.h"
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struct vmproc;
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typedef void (*callback_t)(struct vmproc *who, message *m);
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struct vmproc {
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struct vm_arch vm_arch; /* architecture-specific data */
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int vm_flags;
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endpoint_t vm_endpoint;
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pt_t vm_pt; /* page table data, if VMF_HASPT is set */
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vir_bytes vm_stacktop; /* top of stack as seen from process */
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vir_bytes vm_offset; /* offset of addr 0 for process */
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/* File identification for cs sharing. */
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ino_t vm_ino; /* inode number of file */
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dev_t vm_dev; /* device number of file system */
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time_t vm_ctime; /* inode changed time */
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/* Regions in virtual address space. */
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struct vir_region *vm_regions;
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int vm_count;
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/* Heap for brk() to extend. */
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struct vir_region *vm_heap;
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#define VM_CALL_PRIV_MASK_SIZE BITMAP_CHUNKS(VM_NCALLS)
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bitchunk_t vm_call_priv_mask[VM_CALL_PRIV_MASK_SIZE];
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/* State for requests pending to be done to vfs on behalf of
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* this process.
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*/
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callback_t vm_callback; /* function to call on vfs reply */
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int vm_callback_type; /* expected message type */
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int vm_slot; /* process table slot */
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union {
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struct {
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cp_grant_id_t gid;
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} open; /* VM_VFS_OPEN */
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} vm_state; /* Callback state. */
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#if VMSTATS
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int vm_bytecopies;
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#endif
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};
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/* Bits for vm_flags */
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#define VMF_INUSE 0x001 /* slot contains a process */
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#define VMF_SEPARATE 0x002 /* separate i&d */
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#define VMF_HASPT 0x004 /* has private page table */
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#define VMF_EXITING 0x008 /* PM is cleaning up this process */
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#define VMF_HAS_DMA 0x010 /* Process directly or indirectly granted
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* DMA buffers.
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*/
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#endif
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