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New mdb_set_bind_size function overrides MDB_BIND_SIZE

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This should fix long-standing complaints about the default bind size
without causing undue memory inflation in existing applications.

Could make this adjustable on the command line later.

Supersedes:

https://github.com/mdbtools/mdbtools/pull/137
This commit is contained in:
Evan Miller
2020-09-02 14:30:07 -04:00
parent b7dd44d0d4
commit fb960553e6
7 changed files with 46 additions and 34 deletions
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4
include/mdbtools.h
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@@ -54,7 +54,7 @@
#define MDB_MAX_IDX_COLS 10
#define MDB_CATALOG_PG 18
#define MDB_MEMO_OVERHEAD 12
#define MDB_BIND_SIZE 16384
#define MDB_BIND_SIZE 16384 // override with mdb_set_bind_size(MdbHandle*, size_t)
// This attribute is not supported by all compilers:
// M$VC see http://stackoverflow.com/questions/1113409/attribute-constructor-equivalent-in-vc
@@ -269,6 +269,7 @@ typedef struct {
unsigned char pg_buf[MDB_PGSIZE];
unsigned char alt_pg_buf[MDB_PGSIZE];
MdbFormatConstants *fmt;
size_t bind_size;
char date_fmt[64];
const char *boolean_false_value;
const char *boolean_true_value;
@@ -512,6 +513,7 @@ int mdb_col_disp_size(MdbColumn *col);
size_t mdb_ole_read_next(MdbHandle *mdb, MdbColumn *col, void *ole_ptr);
size_t mdb_ole_read(MdbHandle *mdb, MdbColumn *col, void *ole_ptr, size_t chunk_size);
void* mdb_ole_read_full(MdbHandle *mdb, MdbColumn *col, size_t *size);
void mdb_set_bind_size(MdbHandle *mdb, size_t bind_size);
void mdb_set_date_fmt(MdbHandle *mdb, const char *);
void mdb_set_boolean_fmt_words(MdbHandle *mdb);
void mdb_set_boolean_fmt_numbers(MdbHandle *mdb);