minix/servers/vm/sanitycheck.h
Ben Gras 32fbbd370c - 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 14:49:49 +00:00

71 lines
1.7 KiB
C

#ifndef _SANITYCHECK_H
#define _SANITYCHECK_H 1
#include "vm.h"
#include "glo.h"
#if SANITYCHECKS
/* This macro is used in the sanity check functions, where file and
* line are function arguments.
*/
#define MYASSERT(c) do { if(!(c)) { \
printf("VM:%s:%d: %s failed\n", file, line, #c); \
vm_panic("sanity check failed", NO_NUM); } } while(0)
#define SLABSANITYCHECK(l) if((l) <= vm_sanitychecklevel) { \
slab_sanitycheck(__FILE__, __LINE__); }
#define SANITYCHECK(l) if(!nocheck && ((l) <= vm_sanitychecklevel)) { \
struct vmproc *vmp; \
vm_assert(incheck == 0); \
incheck = 1; \
usedpages_reset(); \
slab_sanitycheck(__FILE__, __LINE__); \
for(vmp = vmproc; vmp < &vmproc[VMP_NR]; vmp++) { \
if((vmp->vm_flags & (VMF_INUSE | VMF_HASPT)) == \
(VMF_INUSE | VMF_HASPT)) { \
PT_SANE(&vmp->vm_pt); \
} \
} \
map_sanitycheck(__FILE__, __LINE__); \
vm_assert(incheck == 1); \
incheck = 0; \
}
#include "../../kernel/proc.h"
#define USE(obj, code) do { \
slabunlock(obj, sizeof(*obj)); \
do { \
code \
} while(0); \
slablock(obj, sizeof(*obj)); \
} while(0)
#define SLABSANE(ptr) { \
if(!slabsane_f(__FILE__, __LINE__, ptr, sizeof(*(ptr)))) { \
printf("VM:%s:%d: SLABSANE(%s)\n", __FILE__, __LINE__, #ptr); \
vm_panic("SLABSANE failed", NO_NUM); \
} \
}
#define NOTRUNNABLE(ep) { \
struct proc pr; \
if(sys_getproc(&pr, ep) != OK) { \
vm_panic("VM: sys_getproc failed", ep); \
} \
if(!pr.p_rts_flags) { \
vm_panic("VM: runnable", ep); \
} \
}
#else
#define SANITYCHECK
#define SLABSANITYCHECK(l)
#define USE(obj, code) do { code } while(0)
#define SLABSANE(ptr)
#define NOTRUNNABLE(ep)
#endif
#endif