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CONC-533: Support for asynchronous statements (binary protocol)

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Added a new option MARIADB_OPT_SKIP_READ_RESPONSE which skips automatic
reading of server response after sending a command to the server.

Server packets have to be retrieved by calling the corresponding methods,
e.g:

Send command                         Read method
mysql_real_query/mysql_send_query    db_read_query_result
mysql_stmt_prepare                   db_read_prepare_response
mysql_stmt_execute,
mariadb_stmt_execute_direct          db_read_execute_response
This commit is contained in:
Georg Richter
2021-05-13 21:21:43 +02:00
parent 304353c3a4
commit e4e5b28452
7 changed files with 141 additions and 92 deletions
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13
libmariadb/mariadb_lib.c
View File

@@ -112,6 +112,7 @@ extern my_bool mthd_supported_buffer_type(enum enum_field_types type);
extern my_bool mthd_stmt_read_prepare_response(MYSQL_STMT *stmt);
extern my_bool mthd_stmt_get_param_metadata(MYSQL_STMT *stmt);
extern my_bool mthd_stmt_get_result_metadata(MYSQL_STMT *stmt);
extern int mthd_stmt_read_execute_response(MYSQL_STMT *stmt);
extern int mthd_stmt_fetch_row(MYSQL_STMT *stmt, unsigned char **row);
extern int mthd_stmt_fetch_to_bind(MYSQL_STMT *stmt, unsigned char *row);
extern int mthd_stmt_read_all_rows(MYSQL_STMT *stmt);
@@ -2489,7 +2490,7 @@ mysql_real_query(MYSQL *mysql, const char *query, unsigned long length)
if (ma_simple_command(mysql, COM_QUERY,query,length,1,0))
return(-1);
if (!skip_result)
if (!skip_result && !mysql->options.extension->skip_read_response)
return(mysql->methods->db_read_query_result(mysql));
return(0);
}
@@ -3362,6 +3363,9 @@ mysql_optionsv(MYSQL *mysql,enum mysql_option option, ...)
CHECK_OPT_EXTENSION_SET(&mysql->options);
mysql->options.extension->io_wait = (int(*)(my_socket, my_bool, int))arg1;
break;
case MARIADB_OPT_SKIP_READ_RESPONSE:
OPT_SET_EXTENDED_VALUE_INT(&mysql->options, skip_read_response, *(my_bool *)arg1);
break;
default:
va_end(ap);
SET_CLIENT_ERROR(mysql, CR_NOT_IMPLEMENTED, SQLSTATE_UNKNOWN, 0);
@@ -3577,6 +3581,9 @@ mysql_get_optionv(MYSQL *mysql, enum mysql_option option, void *arg, ...)
case MARIADB_OPT_IO_WAIT:
*((int(**)(my_socket, my_bool, int))arg) = mysql->options.extension ? mysql->options.extension->io_wait : NULL;
break;
case MARIADB_OPT_SKIP_READ_RESPONSE:
*((my_bool*)arg)= mysql->options.extension ? mysql->options.extension->skip_read_response : 0;
break;
default:
va_end(ap);
SET_CLIENT_ERROR(mysql, CR_NOT_IMPLEMENTED, SQLSTATE_UNKNOWN, 0);
@@ -4509,5 +4516,7 @@ struct st_mariadb_methods MARIADB_DEFAULT_METHODS = {
/* invalidate statements */
ma_invalidate_stmts,
/* API functions */
&MARIADB_API
&MARIADB_API,
/* read execute response */
mthd_stmt_read_execute_response
};