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Simplification: MYSQL_RES *result replaced with MYSQL_DATA result;

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No need to check for result existence any more, store_result functions
now are shorter.
cli_read_binary_rows rewritten to handle MYSQL_DATA directly.


include/mysql.h:
  MYSQL_RES * pointer replaced with MYSQL_DATA: it saves us at least 2 mallocs
  per store_result and simplifies stored result handling.
  Plus it's done with cursor fetch in mind: cursor fetch will use this
  structure to buffer fetched rows.
libmysql/client_settings.h:
  signature of cli_read_binary_rows changed
libmysql/libmysql.c:
  MYSQL_DATA is now used to handle result.
  cli_read_binary_rows rewritten to use MYSQL_DATA directly.
libmysql/libmysql.def:
  declarations of new calls in the library
libmysqld/lib_sql.cc:
  MYSQL_DATA is now used to handle result.
  cli_read_binary_rows rewritten to use MYSQL_DATA directly.
This commit is contained in:
unknown
2004-03-28 17:22:04 +04:00
parent 76385f32b6
commit 7e5cd91057
5 changed files with 91 additions and 115 deletions
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7
include/mysql.h
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@@ -563,9 +563,11 @@ typedef struct st_mysql_stmt
MYSQL_BIND *params; /* input parameters */
MYSQL_BIND *bind; /* output parameters */
MYSQL_FIELD *fields; /* result set metadata */
MYSQL_RES *result; /* cached result set */
MYSQL_DATA result; /* cached result set */
MYSQL_ROWS *data_cursor; /* current row in cached result */
/* copy of mysql->affected_rows after statement execution */
my_ulonglong affected_rows;
my_ulonglong insert_id; /* copy of mysql->insert_id */
/*
mysql_stmt_fetch() calls this function to fetch one row (it's different
for buffered, unbuffered and cursor fetch).
@@ -607,7 +609,7 @@ typedef struct st_mysql_methods
MYSQL_FIELD * (*list_fields)(MYSQL *mysql);
my_bool (*read_prepare_result)(MYSQL *mysql, MYSQL_STMT *stmt);
int (*stmt_execute)(MYSQL_STMT *stmt);
MYSQL_DATA *(*read_binary_rows)(MYSQL_STMT *stmt);
int (*read_binary_rows)(MYSQL_STMT *stmt);
int (*unbuffered_fetch)(MYSQL *mysql, char **row);
void (*free_embedded_thd)(MYSQL *mysql);
const char *(*read_statistics)(MYSQL *mysql);
@@ -664,6 +666,7 @@ MYSQL_ROW_OFFSET STDCALL mysql_stmt_row_tell(MYSQL_STMT *stmt);
void STDCALL mysql_stmt_data_seek(MYSQL_STMT *stmt, my_ulonglong offset);
my_ulonglong STDCALL mysql_stmt_num_rows(MYSQL_STMT *stmt);
my_ulonglong STDCALL mysql_stmt_affected_rows(MYSQL_STMT *stmt);
my_ulonglong STDCALL mysql_stmt_insert_id(MYSQL_STMT *stmt);
my_bool STDCALL mysql_commit(MYSQL * mysql);
my_bool STDCALL mysql_rollback(MYSQL * mysql);