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minix/servers/vm/glo.h

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Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
#include <minix/sys_config.h>
#include <sys/stat.h>
#include <a.out.h>
#include <tools.h>
#include "vm.h"
#include "vmproc.h"
#if _MAIN
#undef EXTERN
#define EXTERN
#endif
- pages that points to page directory values of all processes, 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
2009-09-21 16:49:49 +02:00
#define VMP_SYSTEM _NR_PROCS
#define VMP_EXECTMP _NR_PROCS+1
#define VMP_NR _NR_PROCS+2
EXTERN struct vmproc vmproc[VMP_NR];
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
#if SANITYCHECKS
mark pages whose refcount were >1 and drop to 1 and are read/write writable in the pagetable right away instead of waiting for a pagefault. minor optimization. some a sanity check of SLAB-allocated pointers. vm gets its own _exit and __exit like PM, so the stock (library) panic works.
2009-04-22 14:39:29 +02:00
EXTERN int nocheck;
- pages that points to page directory values of all processes, 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
2009-09-21 16:49:49 +02:00
EXTERN int incheck;
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
EXTERN long vm_sanitychecklevel;
#endif
VM information interface
2010-01-19 22:00:20 +01:00
/* total number of memory pages */
EXTERN int total_pages;
- pages that points to page directory values of all processes, 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
2009-09-21 16:49:49 +02:00
EXTERN int meminit_done;
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