Category : C Source Code
Archive   : XPMALLOC.ZIP
Filename : XPMALLOC.H

/*
** Extern declarations for xpmalloc.lib
*/
extern int xpmInit(struct typxpminfo *);
extern struct typxpmalloc *xpmalloc(unsigned long ,unsigned long ,int *);
extern int xpmFree(struct typxpmalloc *);
extern int xpmFreeAll(void);
extern int saveScreen(struct typxpmalloc *);
extern int restoreScreen(struct typxpmalloc *);

extern void clrScr(void);
extern void setCursor(int ,int );
extern void getCursor(int *,int *);
extern void drawBorder(int ,int ,int ,int );

extern int xpmPutDouble(struct typxpmalloc *,unsigned long , double);
extern int xpmGetDouble(struct typxpmalloc *,unsigned long , double *);
extern int xpmPutFloat(struct typxpmalloc *, unsigned long , double);
extern int xpmGetFloat(struct typxpmalloc *, unsigned long , float *);
extern int xpmPutLong(struct typxpmalloc *, unsigned long , long);
extern int xpmGetLong(struct typxpmalloc *, unsigned long , long *);
extern int xpmPutInt(struct typxpmalloc *, unsigned long , int);
extern int xpmGetInt(struct typxpmalloc *, unsigned long , int *);

/*
** structure for maintaining number of physical pages
** in system and associated address.
*/
typedef struct typaddrarray {
unsigned int pageSeg; /* Segment address of expanded page */
unsigned int pageNum; /* Expanded page number */
} typADDRARRAY;

/*
** structure for maintaining allocated handles and
** associated pages
*/
typedef struct typhandlepages {
unsigned int handle; /* expanded memory handle */
unsigned int pagesAlloced; /* pages allocated */
} typHANDLEPAGES;

/*
** structure for expanded memory allocation
*/
typedef struct typxpmalloc {
char *dataPtr; /* pointer to data */
typHANDLEPAGES xpmId; /* handle and # of pages for item */
unsigned int startPage; /* First logical page */
unsigned int topLogicalPage; /* First logical page mapped */
unsigned long itemSize; /* Size of a single item */
unsigned long totalSize; /* Total memory required */
unsigned int numOfPages; /* Number of pages required */
unsigned int numOfItems; /* Number of items per page */
unsigned int startByte; /* Offset from base SEG */
unsigned int accessedFlag; /* Structure mapped flag */
} typXPMALLOC;


/*
** structure for system information
*/
typedef struct typxpminfo {
int err; /* Error value */
char *errText; /* Error description */
unsigned int pageCount; /* Total pages in system */
unsigned int pagesAvail; /* Pages available for allocation */
char *pageFrame; /* Segment address of page frame */
char versionString[10]; /* String representation of version */
unsigned int openHandles; /* Number of open handles */
typHANDLEPAGES *allHandles; /* Pointer to list of handles and pages */
unsigned int addrCount; /* Number of mappable addressed */
typADDRARRAY *mapAddress; /* Pointer to list of mappable addressed */
} typXPMINFO;