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