93 lines
3.6 KiB
C++
Executable File
93 lines
3.6 KiB
C++
Executable File
/* s4sort.h (c)Copyright Sequiter Software Inc., 1988-1996. All rights reserved. */
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struct RELATE4St ;
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typedef struct
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{
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char S4PTR *ptr ; /* Pointer to the starting memory */
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unsigned pos ; /* The current position withing 'ptr' */
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unsigned len ; /* The current data length pointed to by 'ptr' */
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long disk ; /* Current Disk Position, Offset from start of 'spool' */
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/* >= 'spoolBytes' means nothing is on disk. */
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int spoolI ; /* The spool number of this spool */
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} S4SPOOL ;
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#ifdef S4CBPP
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class S4CLASS SORT4
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{
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public:
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#else
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typedef struct
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{
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#endif
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CODE4 S4PTR *codeBase ;
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FILE4 file ;
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/* char fileNameBuf[14] ;*/
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FILE4SEQ_WRITE seqwrite ;
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char S4PTR *seqwriteBuffer ;
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S4SPOOL S4PTR *spoolPointer ;
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unsigned int spoolsN ; /* The current # of "spools" */
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unsigned int spoolsMax ; /* The # of "spools" memory is allocated for */
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char S4PTR * S4PTR *pointers ;
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unsigned int pointersI ; /* The next pointers to return using 'get'. */
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unsigned int pointersUsed ; /* The number of pointers assigned so far. */
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unsigned int pointersInit ; /* The number of pointers initialied so far. */
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unsigned int pointersMax ; /* The number of pointers for which memory */
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/* has been allocated. */
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LIST4 pool ; /* A number of memory pools for sorting */
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MEM4 S4PTR *poolMemory ;
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unsigned int poolN ; /* The number of pools */
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unsigned int poolEntries ; /* Number of record entries in each pool */
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unsigned int sortLen ;
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long spoolDiskLen ; /* The # of bytes in each disk spool */
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unsigned spoolMemLen ; /* The # of bytes in each memory spool */
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unsigned int infoOffset ; /* The spot to put the corresponding info. */
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unsigned int infoLen ;
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unsigned int totLen ; /* The total length of each pool entry. */
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long isMemAvail ;
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S4CMP_FUNCTION *cmp ;
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#ifdef S4CBPP
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} ;
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#else
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} SORT4 ;
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#endif
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/* The 'len' is passed to the compare function as its third parameter */
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/* The compare function returns '(int) 1' iff 'v1>v2'. */
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/* s4quick also assumes that there is a record number after the sort data */
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#ifdef __cplusplus
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extern "C" {
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#endif
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int s4quick( void S4PTR * S4PTR *, const int, S4CMP_FUNCTION *, const int ) ;
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void s4deleteSpoolEntry( SORT4 S4PTR * ) ;
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int s4flush( SORT4 S4PTR * ) ; /* Flushes current entries to disk */
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int sort4getPtrPtr( SORT4 S4PTR *, char S4PTR * S4PTR * ) ;
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void sort4initPointers( SORT4 S4PTR *, char S4PTR *, unsigned ) ;
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long s4needed(SORT4 S4PTR *) ; /* Returns an estimate on the amount of memory needed */
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int s4nextSpoolEntry(SORT4 S4PTR *) ;
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S4EXPORT int S4FUNCTION sort4free( SORT4 S4PTR * ) ; /* Frees any allocated memory and uninitializes */
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S4EXPORT int S4FUNCTION sort4get( SORT4 S4PTR *, long S4PTR *, void S4PTR * S4PTR *, void S4PTR * S4PTR * ) ;
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S4EXPORT int S4FUNCTION sort4getInit( SORT4 S4PTR * ) ;
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S4EXPORT int S4FUNCTION sort4getInitFree( SORT4 *, struct RELATE4St * ) ;
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S4EXPORT int S4FUNCTION sort4getMemInit( SORT4 * ) ;
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S4EXPORT int S4FUNCTION sort4init( SORT4 S4PTR *, CODE4 S4PTR *, const int, const int ) ;
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S4EXPORT int S4FUNCTION sort4initAlloc( SORT4 S4PTR * ) ;
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S4EXPORT int S4FUNCTION sort4initFree( SORT4 S4PTR *, CODE4 S4PTR *, const int, const int, struct RELATE4St * ) ;
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S4EXPORT int S4FUNCTION sort4initSet( SORT4 S4PTR *, CODE4 S4PTR *, const int, const int ) ;
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S4EXPORT int S4FUNCTION sort4put( SORT4 S4PTR *, const long, const void S4PTR *, const void S4PTR * ) ;
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S4EXPORT int S4FUNCTION sort4spoolsInit( SORT4 S4PTR *, const int ) ;
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#ifdef __cplusplus
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}
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#endif
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