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Magnum One
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Magnum One (Mid-American Digital) (Disc Manufacturing).iso
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VMHEADER.H
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C/C++ Source or Header
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1991-10-07
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1KB
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32 lines
/*
* vmheader.h
* by Stephen Kuhn (The Iliad Group)
*
* Example structures for several pieces of information that the
* VM manager needs to maintain for each VM block.
* It is most convenient to organize them into data structures that refer
* to a single VM block.
*/
struct vmheader {
int location; /* Current block location: 0=disk,1=RAM */
char *addr; /* RAM location, if in RAM */
int prev; /* MRU chain previous */
int next; /* MRU chain next */
int number; /* VM Block # contained in this struct */
int free; /* Free chain next ptr */
int qfree; /* Queued free chain head */
int allocs; /* # allocations this block */
int dirty; /* Has block been modified? */
int maxfree; /* Maximum free block size */
int memtype; /* Block type: DOS or EMS */
int windnum; /* If an EMS block, the hardware window */
int pagenum; /* If an EMS block, the software page */
};
struct freeblk {
int next; /* Offset of the next free chunk of mem */
int size; /* The size of this free chunk */
};