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/*
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==================================================================
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Header for N-way hybrid out-of-core merge sort
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Roland Schregle (roland.schregle@{hslu.ch, gmail.com})
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(c) Fraunhofer Institute for Solar Energy Systems,
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Lucerne University of Applied Sciences & Arts
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==================================================================
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$Id $
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*/
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#ifndef OOC_SORT_H
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#define OOC_SORT_H
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#include <stdint.h>
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#define OOC_SORT_BUFSIZE (1 << 13) /* 8kb */
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typedef uint64_t OOC_Sort_Key;
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#if 0
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int OOC_Sort (const char *inFile, const char *outFile,
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unsigned long blkSize, unsigned recSize,
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OOC_Sort_Key (*priority)(const void *));
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/* Sort records in inFile and output to outFile by (a) internally
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* quicksorting block of blkSize bytes at a time, then (b) merging them
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* via a priority queue. RecSize specifies the size in bytes of each
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* data record. The priority() callback evaluates a record's priority
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* and must be supplied by the caller. */
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#else
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int OOC_Sort (const char *inFile, const char *outFile,
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unsigned numBlocks, unsigned recSize,
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OOC_Sort_Key (*priority)(const void *));
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/* Sort records in inFile and output to outFile by (a) internally
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* quicksorting numBlocks blocks at a time, then (b) merging them
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* via a priority queue. RecSize specifies the size in bytes of each
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* data record. The priority() callback evaluates a record's priority
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* (ordinal index) and must be supplied by the caller. */
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#endif
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#endif
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