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greg |
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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 |
