minix/servers/vm/util.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

28 lines
534 B
C

#ifndef _UTIL_H
#define _UTIL_H 1
#include "vm.h"
#include "glo.h"
#define ELEMENTS(a) (sizeof(a)/sizeof((a)[0]))
#if SANITYCHECKS
#define vm_assert(cond) { \
if(vm_sanitychecklevel > 0 && !(cond)) { \
printf("VM:%s:%d: assert failed: %s\n", \
__FILE__, __LINE__, #cond); \
panic("VM", "assert failed", NO_NUM); \
} \
}
#else
#define vm_assert(cond) ;
#endif
#define vm_panic(str, n) { char _pline[100]; \
sprintf(_pline, "%s:%d: %s", __FILE__, __LINE__, (str)); \
panic("VM", _pline, (n)); \
}
#endif