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Add 'extension' field to all client library structures to make them extensible

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Reorder structure elements to make structures smaller and faster on 64 bit systems
This is a first step in cleaning up the client include files (but should be enough to allow us to do future fixes without breaking the library)
This change is part of WL#2872,  Make client library extensible.
This commit is contained in:
monty@mysql.com/nosik.monty.fi
2007-07-30 06:22:25 +03:00
parent dd81895e45
commit a33c863ffd
3 changed files with 55 additions and 42 deletions
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7
configure.in
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@@ -16,7 +16,7 @@ AM_CONFIG_HEADER(config.h)
PROTOCOL_VERSION=10
DOT_FRM_VERSION=6
# See the libtool docs for information on how to do shared lib versions.
SHARED_LIB_MAJOR_VERSION=15
SHARED_LIB_MAJOR_VERSION=16
SHARED_LIB_VERSION=$SHARED_LIB_MAJOR_VERSION:0:0
NDB_SHARED_LIB_MAJOR_VERSION=3
NDB_SHARED_LIB_VERSION=$NDB_SHARED_LIB_MAJOR_VERSION:0:0
@@ -1920,8 +1920,9 @@ AC_CHECK_FUNCS(alarm bcmp bfill bmove bsearch bzero \
chsize cuserid fchmod fcntl \
fconvert fdatasync finite fpresetsticky fpsetmask fsync ftruncate \
getcwd gethostbyaddr_r gethostbyname_r getpass getpassphrase getpwnam \
getpwuid getrlimit getrusage getwd gmtime_r index initgroups isnan \
localtime_r locking longjmp lrand48 madvise mallinfo memcpy memmove \
getpwuid getrlimit getrusage getwd index initgroups isnan \
localtime_r gethrtime gmtime_r \
locking longjmp lrand48 madvise mallinfo memcpy memmove \
mkstemp mlockall perror poll pread pthread_attr_create mmap mmap64 getpagesize \
pthread_attr_getstacksize pthread_attr_setprio pthread_attr_setschedparam \
pthread_attr_setstacksize pthread_condattr_create pthread_getsequence_np \

61
include/mysql.h
View File

@@ -109,6 +109,7 @@ typedef struct st_mysql_field {
unsigned int decimals; /* Number of decimals in field */
unsigned int charsetnr; /* Character set */
enum enum_field_types type; /* Type of field. See mysql_com.h for types */
void *extension;
} MYSQL_FIELD;
typedef char **MYSQL_ROW; /* return data as array of strings */
@@ -143,12 +144,13 @@ typedef MYSQL_ROWS *MYSQL_ROW_OFFSET; /* offset to current row */
typedef struct embedded_query_result EMBEDDED_QUERY_RESULT;
typedef struct st_mysql_data {
MYSQL_ROWS *data;
struct embedded_query_result *embedded_info;
MEM_ROOT alloc;
my_ulonglong rows;
unsigned int fields;
MYSQL_ROWS *data;
MEM_ROOT alloc;
/* extra info for embedded library */
struct embedded_query_result *embedded_info;
void *extension;
} MYSQL_DATA;
enum mysql_option
@@ -211,6 +213,7 @@ struct st_mysql_options {
void (*local_infile_end)(void *);
int (*local_infile_error)(void *, char *, unsigned int);
void *local_infile_userdata;
void *extension;
};
enum mysql_status
@@ -300,12 +303,12 @@ typedef struct st_mysql
from mysql_stmt_close if close had to cancel result set of this object.
*/
my_bool *unbuffered_fetch_owner;
#if defined(EMBEDDED_LIBRARY) || defined(EMBEDDED_LIBRARY_COMPATIBLE) || MYSQL_VERSION_ID >= 50100
/* needed for embedded server - no net buffer to store the 'info' */
char *info_buffer;
#endif
void *extension;
} MYSQL;
typedef struct st_mysql_res {
my_ulonglong row_count;
MYSQL_FIELD *fields;
@@ -313,14 +316,15 @@ typedef struct st_mysql_res {
MYSQL_ROWS *data_cursor;
unsigned long *lengths; /* column lengths of current row */
MYSQL *handle; /* for unbuffered reads */
MEM_ROOT field_alloc;
unsigned int field_count, current_field;
const struct st_mysql_methods *methods;
MYSQL_ROW row; /* If unbuffered read */
MYSQL_ROW current_row; /* buffer to current row */
MEM_ROOT field_alloc;
unsigned int field_count, current_field;
my_bool eof; /* Used by mysql_fetch_row */
/* mysql_stmt_close() had to cancel this result */
my_bool unbuffered_fetch_cancelled;
const struct st_mysql_methods *methods;
void *extension;
} MYSQL_RES;
#define MAX_MYSQL_MANAGER_ERR 256
@@ -340,21 +344,23 @@ typedef struct st_mysql_res {
typedef struct st_mysql_manager
{
NET net;
char *host,*user,*passwd;
char *host, *user, *passwd;
char *net_buf, *net_buf_pos, *net_data_end;
unsigned int port;
my_bool free_me;
my_bool eof;
int cmd_status;
int last_errno;
char* net_buf,*net_buf_pos,*net_data_end;
int net_buf_size;
my_bool free_me;
my_bool eof;
char last_error[MAX_MYSQL_MANAGER_ERR];
void *extension;
} MYSQL_MANAGER;
typedef struct st_mysql_parameters
{
unsigned long *p_max_allowed_packet;
unsigned long *p_net_buffer_length;
void *extension;
} MYSQL_PARAMETERS;
#if !defined(MYSQL_SERVER) && !defined(EMBEDDED_LIBRARY)
@@ -369,6 +375,7 @@ typedef struct st_mysql_parameters
*/
int STDCALL mysql_server_init(int argc, char **argv, char **groups);
void STDCALL mysql_server_end(void);
/*
mysql_server_init/end need to be called when using libmysqld or
libmysqlclient (exactly, mysql_server_init() is called by mysql_init() so
@@ -657,23 +664,24 @@ typedef struct st_mysql_bind
void *buffer; /* buffer to get/put data */
/* set this if you want to track data truncations happened during fetch */
my_bool *error;
enum enum_field_types buffer_type; /* buffer type */
/* output buffer length, must be set when fetching str/binary */
unsigned long buffer_length;
unsigned char *row_ptr; /* for the current data position */
unsigned long offset; /* offset position for char/binary fetch */
unsigned long length_value; /* Used if length is 0 */
unsigned int param_number; /* For null count and error messages */
unsigned int pack_length; /* Internal length for packed data */
my_bool error_value; /* used if error is 0 */
my_bool is_unsigned; /* set if integer type is unsigned */
my_bool long_data_used; /* If used with mysql_send_long_data */
my_bool is_null_value; /* Used if is_null is 0 */
void (*store_param_func)(NET *net, struct st_mysql_bind *param);
void (*fetch_result)(struct st_mysql_bind *, MYSQL_FIELD *,
unsigned char **row);
void (*skip_result)(struct st_mysql_bind *, MYSQL_FIELD *,
unsigned char **row);
/* output buffer length, must be set when fetching str/binary */
unsigned long buffer_length;
unsigned long offset; /* offset position for char/binary fetch */
unsigned long length_value; /* Used if length is 0 */
unsigned int param_number; /* For null count and error messages */
unsigned int pack_length; /* Internal length for packed data */
enum enum_field_types buffer_type; /* buffer type */
my_bool error_value; /* used if error is 0 */
my_bool is_unsigned; /* set if integer type is unsigned */
my_bool long_data_used; /* If used with mysql_send_long_data */
my_bool is_null_value; /* Used if is_null is 0 */
void *extension;
} MYSQL_BIND;
@@ -688,15 +696,15 @@ typedef struct st_mysql_stmt
MYSQL_FIELD *fields; /* result set metadata */
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).
*/
int (*read_row_func)(struct st_mysql_stmt *stmt,
unsigned char **row);
/* copy of mysql->affected_rows after statement execution */
my_ulonglong affected_rows;
my_ulonglong insert_id; /* copy of mysql->insert_id */
unsigned long stmt_id; /* Id for prepared statement */
unsigned long flags; /* i.e. type of cursor to open */
unsigned long prefetch_rows; /* number of rows per one COM_FETCH */
@@ -722,6 +730,7 @@ typedef struct st_mysql_stmt
metadata fields when doing mysql_stmt_store_result.
*/
my_bool update_max_length;
void *extension;
} MYSQL_STMT;
enum enum_stmt_attr_type

27
include/mysql_com.h
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@@ -186,25 +186,25 @@ typedef struct st_vio Vio;
typedef struct st_net {
#if !defined(CHECK_EMBEDDED_DIFFERENCES) || !defined(EMBEDDED_LIBRARY)
Vio* vio;
Vio *vio;
unsigned char *buff,*buff_end,*write_pos,*read_pos;
my_socket fd; /* For Perl DBI/dbd */
unsigned long max_packet,max_packet_size;
unsigned int pkt_nr,compress_pkt_nr;
unsigned int write_timeout, read_timeout, retry_count;
int fcntl;
my_bool compress;
/*
The following variable is set if we are doing several queries in one
command ( as in LOAD TABLE ... FROM MASTER ),
and do not want to confuse the client with OK at the wrong time
*/
unsigned long remain_in_buf,length, buf_length, where_b;
unsigned long max_packet,max_packet_size;
unsigned int pkt_nr,compress_pkt_nr;
unsigned int write_timeout, read_timeout, retry_count;
int fcntl;
unsigned int *return_status;
unsigned char reading_or_writing;
char save_char;
my_bool no_send_ok; /* For SPs and other things that do multiple stmts */
my_bool no_send_eof; /* For SPs' first version read-only cursors */
my_bool compress;
/*
Set if OK packet is already sent, and we do not need to send error
messages
@@ -215,20 +215,20 @@ typedef struct st_net {
queries in cache that have not stored its results yet
*/
#endif
char last_error[MYSQL_ERRMSG_SIZE], sqlstate[SQLSTATE_LENGTH+1];
unsigned int last_errno;
unsigned char error;
/*
'query_cache_query' should be accessed only via query cache
functions and methods to maintain proper locking.
*/
unsigned char *query_cache_query;
unsigned int last_errno;
unsigned char error;
my_bool report_error; /* We should report error (we have unreported error) */
my_bool return_errno;
char last_error[MYSQL_ERRMSG_SIZE], sqlstate[SQLSTATE_LENGTH+1];
void *extension;
} NET;
#define packet_error (~(unsigned long) 0)
enum enum_field_types { MYSQL_TYPE_DECIMAL, MYSQL_TYPE_TINY,
@@ -389,6 +389,7 @@ typedef struct st_udf_args
char *maybe_null; /* Set to 1 for all maybe_null args */
char **attributes; /* Pointer to attribute name */
unsigned long *attribute_lengths; /* Length of attribute arguments */
void *extension;
} UDF_ARGS;
/* This holds information about the result */
@@ -399,7 +400,9 @@ typedef struct st_udf_init
unsigned int decimals; /* for real functions */
unsigned long max_length; /* For string functions */
char *ptr; /* free pointer for function data */
my_bool const_item; /* 0 if result is independent of arguments */
/* 0 if result is independent of arguments */
my_bool const_item;
void *extension;
} UDF_INIT;
/* Constants when using compression */