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24 * $XConsortium: unixf_storage.h /main/5 1996/07/18 14:56:35 drk $
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51 #ifndef _unixf_storage_h
52 #define _unixf_storage_h 1
54 #include <sys/types.h>
57 #include "utility/funcs.h"
58 #include "storage/lru.h"
59 #include "storage/abs_storage.h"
63 //class unixf_storage : public rep_cell, public abs_storage, public fstream
64 class unixf_storage : public abs_storage, public fstream
74 // mode: see ios::in etc. stuff in file iostream.h
75 unixf_storage( char* file_path,
78 int md = ios::in | ios::out
80 virtual ~unixf_storage() ;
82 virtual void remove() ;
85 int readString (mmdb_pos_t loc, char*, int len, int str_offset = 0);
86 int appendString(mmdb_pos_t loc, const char*, int len, Boolean flush_opt = false);
87 int updateString(mmdb_pos_t loc, const char* base, int len, int string_ofst = 0, Boolean flush = false);
90 // non-applicable funcs
91 int insertString(mmdb_pos_t& , const char* , int, Boolean = false)
93 int get_str_ptr(mmdb_pos_t, char*&, int& )
96 int deleteString (mmdb_pos_t, Boolean = false )
98 int allocString (mmdb_pos_t& , int, char*&, int = 0)
100 virtual int truncate(int target_length_in_bytes);
102 Boolean io_mode(int mode) ;
105 friend class storage_mgr_t;
106 friend class ld_dyn_hash;
107 friend class handler;
110 typedef unixf_storage* unixf_storagePtr;