61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
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/* o4opt.h (c)Copyright Sequiter Software Inc., 1990-1994. All rights reserved. */
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#define OPT4AVAIL -1
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#define OPT4NONE 0
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#define OPT4DBF 1
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#define OPT4INDEX 2
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#define OPT4OTHER 3
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/* OPT4CHECK_RATE must be a minimum of 5 in order to optimize correctly */
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#define OPT4CHECK_RATE 10
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#define OPT4GO_DBF_MODE 1
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#define OPT4SKIP_DBF_MODE 2
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#define OPT4SKIP_NDX_MODE 4
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#define OPT4SEEK_NDX_MODE 8
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#define OPT4APPEND_MODE 16
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#define OPT4WRITE_KEYS_MODE 32
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#define OPT4REINDEX_MODE 64
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#define OPT4START_MODE 128
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/* factor of 2 that estimates the hash distribution, #slots = between #blocks * OPT4BLOCK_DENSITY and #blocks * OPT4BLOCK_DENSITY * 2 */
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#define OPT4BLOCK_DENSITY 2L
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struct OPT4BLOCK_st ;
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/* this structure must match OPT4BLOCK_st with opt4=file followed by pos=pos */
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typedef struct
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{
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FILE4 S4PTR *file ;
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long pos ;
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} OPT4CMP ;
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#ifdef __cplusplus
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extern "C" {
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#endif
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S4EXPORT int S4FUNCTION c4calc_type( unsigned long ) ;
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S4EXPORT void S4FUNCTION d4update_prio( CODE4 S4PTR * ) ;
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S4EXPORT void S4FUNCTION file4set_write_opt( FILE4 S4PTR *, int ) ;
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S4EXPORT void S4FUNCTION opt4block_clear( OPT4BLOCK S4PTR * ) ;
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S4EXPORT void S4FUNCTION opt4block_remove( OPT4BLOCK S4PTR *, int ) ;
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S4EXPORT void S4FUNCTION opt4file_delete( FILE4 S4PTR *, long, long ) ;
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S4EXPORT LIST4 *S4FUNCTION opt4file_find_list( FILE4 S4PTR * ) ;
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S4EXPORT int S4FUNCTION opt4file_flush_list( FILE4 S4PTR *, LIST4 S4PTR *, int ) ;
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S4EXPORT long S4FUNCTION opt4file_hash( FILE4 S4PTR *, unsigned long ) ;
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S4EXPORT void S4FUNCTION opt4file_lru_top( FILE4 S4PTR *, LINK4 S4PTR *, char ) ;
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S4EXPORT unsigned S4FUNCTION opt4file_read( FILE4 S4PTR *, long, void S4PTR *, unsigned ) ;
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S4EXPORT OPT4BLOCK *S4FUNCTION opt4file_return_block( FILE4 S4PTR *, long, long ) ;
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S4EXPORT int S4FUNCTION opt4file_write( FILE4 S4PTR *, long, unsigned, void S4PTR *, char ) ;
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S4EXPORT int S4FUNCTION opt4flush_all( OPT4 S4PTR *, char ) ;
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S4EXPORT int S4FUNCTION opt4flush_write_buffer( OPT4 S4PTR * ) ;
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S4EXPORT void S4FUNCTION opt4set_priority( OPT4 S4PTR *, char S4PTR * ) ;
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#ifdef __cplusplus
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}
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#endif
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