static VALUE _mysql_client_options(VALUE self, int opt, VALUE value) {
int result;
void *retval = NULL;
unsigned int intval = 0;
my_bool boolval;
GET_CLIENT(self);
REQUIRE_NOT_CONNECTED(wrapper);
if (NIL_P(value))
return Qfalse;
switch(opt) {
case MYSQL_OPT_CONNECT_TIMEOUT:
intval = NUM2INT(value);
retval = &intval;
break;
case MYSQL_OPT_READ_TIMEOUT:
intval = NUM2INT(value);
retval = &intval;
break;
case MYSQL_OPT_WRITE_TIMEOUT:
intval = NUM2INT(value);
retval = &intval;
break;
case MYSQL_OPT_LOCAL_INFILE:
intval = (value == Qfalse ? 0 : 1);
retval = &intval;
break;
case MYSQL_OPT_RECONNECT:
boolval = (value == Qfalse ? 0 : 1);
retval = &boolval;
break;
default:
return Qfalse;
}
result = mysql_options(wrapper->client, opt, retval);
/* Zero means success */
if (result != 0) {
rb_warn("%s\n", mysql_error(wrapper->client));
} else {
/* Special case for reconnect, this option is also stored in the wrapper struct */
if (opt == MYSQL_OPT_RECONNECT)
wrapper->reconnect_enabled = boolval;
}
return (result == 0) ? Qtrue : Qfalse;
}
VALUE rb_mysql_stmt_new(VALUE rb_client, VALUE sql) {
mysql_stmt_wrapper *stmt_wrapper;
VALUE rb_stmt;
#ifdef HAVE_RUBY_ENCODING_H
rb_encoding *conn_enc;
#endif
Check_Type(sql, T_STRING);
rb_stmt = Data_Make_Struct(cMysql2Statement, mysql_stmt_wrapper, rb_mysql_stmt_mark, rb_mysql_stmt_free, stmt_wrapper);
{
stmt_wrapper->client = rb_client;
stmt_wrapper->refcount = 1;
stmt_wrapper->closed = 0;
stmt_wrapper->stmt = NULL;
}
// instantiate stmt
{
GET_CLIENT(rb_client);
stmt_wrapper->stmt = mysql_stmt_init(wrapper->client);
#ifdef HAVE_RUBY_ENCODING_H
conn_enc = rb_to_encoding(wrapper->encoding);
#endif
}
if (stmt_wrapper->stmt == NULL) {
rb_raise(cMysql2Error, "Unable to initialize prepared statement: out of memory");
}
// set STMT_ATTR_UPDATE_MAX_LENGTH attr
{
my_bool truth = 1;
if (mysql_stmt_attr_set(stmt_wrapper->stmt, STMT_ATTR_UPDATE_MAX_LENGTH, &truth)) {
rb_raise(cMysql2Error, "Unable to initialize prepared statement: set STMT_ATTR_UPDATE_MAX_LENGTH");
}
}
// call mysql_stmt_prepare w/o gvl
{
struct nogvl_prepare_statement_args args;
args.stmt = stmt_wrapper->stmt;
args.sql = sql;
#ifdef HAVE_RUBY_ENCODING_H
// ensure the string is in the encoding the connection is expecting
args.sql = rb_str_export_to_enc(args.sql, conn_enc);
#endif
args.sql_ptr = RSTRING_PTR(sql);
args.sql_len = RSTRING_LEN(sql);
if ((VALUE)rb_thread_call_without_gvl(nogvl_prepare_statement, &args, RUBY_UBF_IO, 0) == Qfalse) {
rb_raise_mysql2_stmt_error(stmt_wrapper);
}
}
return rb_stmt;
}
static VALUE rb_mysql_client_next_result(VALUE self)
{
GET_CLIENT(self);
int ret;
ret = mysql_next_result(wrapper->client);
if (ret == 0)
return Qtrue;
else
return Qfalse;
}
static VALUE rb_mysql_client_socket(VALUE self) {
GET_CLIENT(self);
#ifndef _WIN32
REQUIRE_OPEN_DB(wrapper);
int fd_set_fd = wrapper->client->net.fd;
return INT2NUM(fd_set_fd);
#else
rb_raise(cMysql2Error, "Raw access to the mysql file descriptor isn't supported on Windows");
#endif
}
static VALUE initialize_ext(VALUE self) {
GET_CLIENT(self);
if ((VALUE)rb_thread_call_without_gvl(nogvl_init, wrapper, RUBY_UBF_IO, 0) == Qfalse) {
/* TODO: warning - not enough memory? */
return rb_raise_mysql2_error(wrapper);
}
wrapper->initialized = 1;
return self;
}
static VALUE init_connection(VALUE self) {
GET_CLIENT(self);
if (rb_thread_blocking_region(nogvl_init, wrapper->client, RUBY_UBF_IO, 0) == Qfalse) {
/* TODO: warning - not enough memory? */
return rb_raise_mysql2_error(wrapper);
}
wrapper->closed = 0;
return self;
}
static VALUE rb_mysql_client_affected_rows(VALUE self) {
my_ulonglong retVal;
GET_CLIENT(self);
REQUIRE_OPEN_DB(wrapper);
retVal = mysql_affected_rows(wrapper->client);
if (retVal == (my_ulonglong)-1) {
rb_raise_mysql2_error(wrapper);
}
return ULL2NUM(retVal);
}
static VALUE set_ssl_options(VALUE self, VALUE key, VALUE cert, VALUE ca, VALUE capath, VALUE cipher) {
GET_CLIENT(self);
mysql_ssl_set(wrapper->client,
NIL_P(key) ? NULL : StringValueCStr(key),
NIL_P(cert) ? NULL : StringValueCStr(cert),
NIL_P(ca) ? NULL : StringValueCStr(ca),
NIL_P(capath) ? NULL : StringValueCStr(capath),
NIL_P(cipher) ? NULL : StringValueCStr(cipher));
return self;
}
/* call-seq:
* client.automatic_close = false
*
* Set this to +false+ to leave the connection open after it is garbage
* collected. To avoid "Aborted connection" errors on the server, explicitly
* call +close+ when the connection is no longer needed.
*
* @see http://dev.mysql.com/doc/en/communication-errors.html
*/
static VALUE set_automatic_close(VALUE self, VALUE value) {
GET_CLIENT(self);
if (RTEST(value)) {
wrapper->automatic_close = 1;
} else {
#ifndef _WIN32
wrapper->automatic_close = 0;
#else
rb_warn("Connections are always closed by garbage collector on Windows");
#endif
}
return value;
}
/* call-seq:
* client.next_result
*
* Fetch the next result set from the server.
* Returns nothing.
*/
static VALUE rb_mysql_client_next_result(VALUE self)
{
int ret;
GET_CLIENT(self);
ret = mysql_next_result(wrapper->client);
if (ret > 0) {
rb_raise_mysql2_error(wrapper);
return Qfalse;
} else if (ret == 0) {
return Qtrue;
} else {
return Qfalse;
}
}
static VALUE disconnect_and_raise(VALUE self, VALUE error) {
GET_CLIENT(self);
wrapper->closed = 1;
wrapper->active = 0;
// manually close the socket for read/write
// this feels dirty, but is there another way?
shutdown(wrapper->client->net.fd, 2);
rb_exc_raise(error);
return Qnil;
}
static VALUE rb_connect(VALUE self, VALUE user, VALUE pass, VALUE host, VALUE port, VALUE database, VALUE socket, VALUE flags) {
struct nogvl_connect_args args;
time_t start_time, end_time;
unsigned int elapsed_time, connect_timeout;
VALUE rv;
GET_CLIENT(self);
args.host = NIL_P(host) ? NULL : StringValueCStr(host);
args.unix_socket = NIL_P(socket) ? NULL : StringValueCStr(socket);
args.port = NIL_P(port) ? 0 : NUM2INT(port);
args.user = NIL_P(user) ? NULL : StringValueCStr(user);
args.passwd = NIL_P(pass) ? NULL : StringValueCStr(pass);
args.db = NIL_P(database) ? NULL : StringValueCStr(database);
args.mysql = wrapper->client;
args.client_flag = NUM2ULONG(flags);
if (wrapper->connect_timeout)
time(&start_time);
rv = (VALUE) rb_thread_call_without_gvl(nogvl_connect, &args, RUBY_UBF_IO, 0);
if (rv == Qfalse) {
while (rv == Qfalse && errno == EINTR) {
if (wrapper->connect_timeout) {
time(&end_time);
/* avoid long connect timeout from system time changes */
if (end_time < start_time)
start_time = end_time;
elapsed_time = end_time - start_time;
/* avoid an early timeout due to time truncating milliseconds off the start time */
if (elapsed_time > 0)
elapsed_time--;
if (elapsed_time >= wrapper->connect_timeout)
break;
connect_timeout = wrapper->connect_timeout - elapsed_time;
mysql_options(wrapper->client, MYSQL_OPT_CONNECT_TIMEOUT, &connect_timeout);
}
errno = 0;
rv = (VALUE) rb_thread_call_without_gvl(nogvl_connect, &args, RUBY_UBF_IO, 0);
}
/* restore the connect timeout for reconnecting */
if (wrapper->connect_timeout)
mysql_options(wrapper->client, MYSQL_OPT_CONNECT_TIMEOUT, &wrapper->connect_timeout);
if (rv == Qfalse)
return rb_raise_mysql2_error(wrapper);
}
wrapper->server_version = mysql_get_server_version(wrapper->client);
wrapper->connected = 1;
return self;
}
static VALUE disconnect_and_raise(VALUE self, VALUE error) {
GET_CLIENT(self);
wrapper->active_thread = Qnil;
wrapper->connected = 0;
/* manually close the socket for read/write
this feels dirty, but is there another way? */
close(wrapper->client->net.fd);
wrapper->client->net.fd = -1;
rb_exc_raise(error);
return Qnil;
}
static VALUE set_reconnect(VALUE self, VALUE value) {
my_bool reconnect;
GET_CLIENT(self);
if(!NIL_P(value)) {
reconnect = value == Qfalse ? 0 : 1;
/* set default reconnect behavior */
if (mysql_options(wrapper->client, MYSQL_OPT_RECONNECT, &reconnect)) {
/* TODO: warning - unable to set reconnect behavior */
rb_warn("%s\n", mysql_error(wrapper->client));
}
}
return value;
}
static VALUE rb_set_ssl_mode_option(VALUE self, VALUE setting) {
unsigned long version = mysql_get_client_version();
if (version < 50703) {
rb_warn( "Your mysql client library does not support setting ssl_mode; full support comes with 5.7.11." );
return Qnil;
}
#ifdef HAVE_CONST_MYSQL_OPT_SSL_ENFORCE
GET_CLIENT(self);
int val = NUM2INT( setting );
if (version >= 50703 && version < 50711) {
if (val == SSL_MODE_DISABLED || val == SSL_MODE_REQUIRED) {
bool b = ( val == SSL_MODE_REQUIRED );
int result = mysql_options( wrapper->client, MYSQL_OPT_SSL_ENFORCE, &b );
return INT2NUM(result);
} else {
rb_warn( "MySQL client libraries between 5.7.3 and 5.7.10 only support SSL_MODE_DISABLED and SSL_MODE_REQUIRED" );
return Qnil;
}
}
#endif
#ifdef FULL_SSL_MODE_SUPPORT
GET_CLIENT(self);
int val = NUM2INT( setting );
if (val != SSL_MODE_DISABLED && val != SSL_MODE_PREFERRED && val != SSL_MODE_REQUIRED && val != SSL_MODE_VERIFY_CA && val != SSL_MODE_VERIFY_IDENTITY) {
rb_raise(cMysql2Error, "ssl_mode= takes DISABLED, PREFERRED, REQUIRED, VERIFY_CA, VERIFY_IDENTITY, you passed: %d", val );
}
int result = mysql_options( wrapper->client, MYSQL_OPT_SSL_MODE, &val );
return INT2NUM(result);
#endif
#ifdef NO_SSL_MODE_SUPPORT
return Qnil;
#endif
}
/* call-seq:
* client.select_db(name)
*
* Causes the database specified by +name+ to become the default (current)
* database on the connection specified by mysql.
*/
static VALUE rb_mysql_client_select_db(VALUE self, VALUE db)
{
struct nogvl_select_db_args args;
GET_CLIENT(self);
REQUIRE_OPEN_DB(wrapper);
args.mysql = wrapper->client;
args.db = StringValuePtr(db);
if (rb_thread_blocking_region(nogvl_select_db, &args, RUBY_UBF_IO, 0) == Qfalse)
rb_raise_mysql2_error(wrapper);
return db;
}
/* call-seq:
* client.select_db(name)
*
* Causes the database specified by +name+ to become the default (current)
* database on the connection specified by mysql.
*/
static VALUE rb_mysql_client_select_db(VALUE self, VALUE db)
{
struct nogvl_select_db_args args;
GET_CLIENT(self);
REQUIRE_CONNECTED(wrapper);
args.mysql = wrapper->client;
args.db = StringValueCStr(db);
if (rb_thread_call_without_gvl(nogvl_select_db, &args, RUBY_UBF_IO, 0) == Qfalse)
rb_raise_mysql2_error(wrapper);
return db;
}
static VALUE set_connect_timeout(VALUE self, VALUE value) {
unsigned int connect_timeout = 0;
GET_CLIENT(self);
if(!NIL_P(value)) {
connect_timeout = NUM2INT(value);
if(0 == connect_timeout) return value;
/* set default connection timeout behavior */
if (mysql_options(wrapper->client, MYSQL_OPT_CONNECT_TIMEOUT, &connect_timeout)) {
/* TODO: warning - unable to set connection timeout */
rb_warn("%s\n", mysql_error(wrapper->client));
}
}
return value;
}
static VALUE rb_mysql_client_socket(VALUE self) {
GET_CLIENT(self);
REQUIRE_OPEN_DB(wrapper);
int fd_set_fd = wrapper->client->net.fd;
#ifdef _WIN32
WSAPROTOCOL_INFO wsa_pi;
// dupicate the SOCKET from libmysql
int r = WSADuplicateSocket(wrapper->client->net.fd, GetCurrentProcessId(), &wsa_pi);
SOCKET s = WSASocket(wsa_pi.iAddressFamily, wsa_pi.iSocketType, wsa_pi.iProtocol, &wsa_pi, 0, 0);
// create the CRT fd so ruby can get back to the SOCKET
fd_set_fd = _open_osfhandle(s, O_RDWR|O_BINARY);
return INT2NUM(fd_set_fd);
#else
return INT2NUM(fd_set_fd);
#endif
}
static VALUE disconnect_and_raise(VALUE self, VALUE error) {
GET_CLIENT(self);
MARK_CONN_INACTIVE(self);
wrapper->connected = 0;
/* Invalidate the MySQL socket to prevent further communication.
* The GC will come along later and call mysql_close to free it.
*/
if (invalidate_fd(wrapper->client->net.fd) == Qfalse) {
fprintf(stderr, "[WARN] mysql2 failed to invalidate FD safely, closing unsafely\n");
close(wrapper->client->net.fd);
}
rb_exc_raise(error);
}
/* call-seq:
* client.query(sql, options = {})
*
* Query the database with +sql+, with optional +options+. For the possible
* options, see default_query_options on the Mysql2::Client class.
*/
static VALUE rb_query(VALUE self, VALUE sql, VALUE current) {
#ifndef _WIN32
struct async_query_args async_args;
#endif
struct nogvl_send_query_args args;
GET_CLIENT(self);
REQUIRE_CONNECTED(wrapper);
args.mysql = wrapper->client;
(void)RB_GC_GUARD(current);
Check_Type(current, T_HASH);
rb_iv_set(self, "@current_query_options", current);
Check_Type(sql, T_STRING);
#ifdef HAVE_RUBY_ENCODING_H
/* ensure the string is in the encoding the connection is expecting */
args.sql = rb_str_export_to_enc(sql, rb_to_encoding(wrapper->encoding));
#else
args.sql = sql;
#endif
args.sql_ptr = RSTRING_PTR(args.sql);
args.sql_len = RSTRING_LEN(args.sql);
args.wrapper = wrapper;
rb_mysql_client_set_active_thread(self);
#ifndef _WIN32
rb_rescue2(do_send_query, (VALUE)&args, disconnect_and_raise, self, rb_eException, (VALUE)0);
if (rb_hash_aref(current, sym_async) == Qtrue) {
return Qnil;
} else {
async_args.fd = wrapper->client->net.fd;
async_args.self = self;
rb_rescue2(do_query, (VALUE)&async_args, disconnect_and_raise, self, rb_eException, (VALUE)0);
return rb_mysql_client_async_result(self);
}
#else
do_send_query(&args);
/* this will just block until the result is ready */
return rb_ensure(rb_mysql_client_async_result, self, finish_and_mark_inactive, self);
#endif
}
void rb_mysql_client_set_active_thread(VALUE self) {
VALUE thread_current = rb_thread_current();
GET_CLIENT(self);
// see if this connection is still waiting on a result from a previous query
if (NIL_P(wrapper->active_thread)) {
// mark this connection active
wrapper->active_thread = thread_current;
} else if (wrapper->active_thread == thread_current) {
rb_raise(cMysql2Error, "This connection is still waiting for a result, try again once you have the result");
} else {
VALUE inspect = rb_inspect(wrapper->active_thread);
const char *thr = StringValueCStr(inspect);
rb_raise(cMysql2Error, "This connection is in use by: %s", thr);
}
}
/* call-seq:
* client.async_result
*
* Returns the result for the last async issued query.
*/
static VALUE rb_mysql_client_async_result(VALUE self) {
MYSQL_RES * result;
VALUE resultObj;
#ifdef HAVE_RUBY_ENCODING_H
mysql2_result_wrapper * result_wrapper;
#endif
GET_CLIENT(self);
// if we're not waiting on a result, do nothing
if (NIL_P(wrapper->active_thread))
return Qnil;
REQUIRE_CONNECTED(wrapper);
if (rb_thread_blocking_region(nogvl_read_query_result, wrapper->client, RUBY_UBF_IO, 0) == Qfalse) {
// an error occurred, mark this connection inactive
MARK_CONN_INACTIVE(self);
return rb_raise_mysql2_error(wrapper);
}
VALUE is_streaming = rb_hash_aref(rb_iv_get(self, "@query_options"), sym_stream);
if(is_streaming == Qtrue) {
result = (MYSQL_RES *)rb_thread_blocking_region(nogvl_use_result, wrapper, RUBY_UBF_IO, 0);
} else {
result = (MYSQL_RES *)rb_thread_blocking_region(nogvl_store_result, wrapper, RUBY_UBF_IO, 0);
}
if (result == NULL) {
if (mysql_errno(wrapper->client) != 0) {
MARK_CONN_INACTIVE(self);
rb_raise_mysql2_error(wrapper);
}
// no data and no error, so query was not a SELECT
return Qnil;
}
resultObj = rb_mysql_result_to_obj(result);
// pass-through query options for result construction later
rb_iv_set(resultObj, "@query_options", rb_funcall(rb_iv_get(self, "@query_options"), rb_intern("dup"), 0));
#ifdef HAVE_RUBY_ENCODING_H
GetMysql2Result(resultObj, result_wrapper);
result_wrapper->encoding = wrapper->encoding;
#endif
return resultObj;
}
static VALUE rb_mysql_info(VALUE self) {
const char *info;
VALUE rb_str;
GET_CLIENT(self);
info = mysql_info(wrapper->client);
if (info == NULL) {
return Qnil;
}
rb_str = rb_str_new2(info);
#ifdef HAVE_RUBY_ENCODING_H
rb_enc_associate(rb_str, rb_utf8_encoding());
#endif
return rb_str;
}
static VALUE finish_and_mark_inactive(void *args) {
VALUE self = args;
MYSQL_RES *result;
GET_CLIENT(self);
if (!NIL_P(wrapper->active_thread)) {
/* if we got here, the result hasn't been read off the wire yet
so lets do that and then throw it away because we have no way
of getting it back up to the caller from here */
result = (MYSQL_RES *)rb_thread_call_without_gvl(nogvl_store_result, wrapper, RUBY_UBF_IO, 0);
mysql_free_result(result);
MARK_CONN_INACTIVE(self);
}
return Qnil;
}
/* call-seq:
* client.escape(string)
*
* Escape +string+ so that it may be used in a SQL statement.
*/
static VALUE rb_mysql_client_real_escape(VALUE self, VALUE str) {
unsigned char *newStr;
VALUE rb_str;
unsigned long newLen, oldLen;
#ifdef HAVE_RUBY_ENCODING_H
rb_encoding *default_internal_enc;
rb_encoding *conn_enc;
#endif
GET_CLIENT(self);
REQUIRE_CONNECTED(wrapper);
Check_Type(str, T_STRING);
#ifdef HAVE_RUBY_ENCODING_H
default_internal_enc = rb_default_internal_encoding();
conn_enc = rb_to_encoding(wrapper->encoding);
/* ensure the string is in the encoding the connection is expecting */
str = rb_str_export_to_enc(str, conn_enc);
#endif
oldLen = RSTRING_LEN(str);
newStr = xmalloc(oldLen*2+1);
newLen = mysql_real_escape_string(wrapper->client, (char *)newStr, RSTRING_PTR(str), oldLen);
if (newLen == oldLen) {
/* no need to return a new ruby string if nothing changed */
#ifdef HAVE_RUBY_ENCODING_H
if (default_internal_enc) {
str = rb_str_export_to_enc(str, default_internal_enc);
}
#endif
xfree(newStr);
return str;
} else {
rb_str = rb_str_new((const char*)newStr, newLen);
#ifdef HAVE_RUBY_ENCODING_H
rb_enc_associate(rb_str, conn_enc);
if (default_internal_enc) {
rb_str = rb_str_export_to_enc(rb_str, default_internal_enc);
}
#endif
xfree(newStr);
return rb_str;
}
}
/* call-seq: stmt.fields # => array
*
* Returns a list of fields that will be returned by this statement.
*/
static VALUE fields(VALUE self) {
MYSQL_FIELD *fields;
MYSQL_RES *metadata;
unsigned int field_count;
unsigned int i;
VALUE field_list;
MYSQL_STMT* stmt;
#ifdef HAVE_RUBY_ENCODING_H
rb_encoding *default_internal_enc, *conn_enc;
#endif
GET_STATEMENT(self);
stmt = stmt_wrapper->stmt;
#ifdef HAVE_RUBY_ENCODING_H
default_internal_enc = rb_default_internal_encoding();
{
GET_CLIENT(stmt_wrapper->client);
conn_enc = rb_to_encoding(wrapper->encoding);
}
#endif
metadata = mysql_stmt_result_metadata(stmt);
fields = mysql_fetch_fields(metadata);
field_count = mysql_stmt_field_count(stmt);
field_list = rb_ary_new2((long)field_count);
for(i = 0; i < field_count; i++) {
VALUE rb_field;
rb_field = rb_str_new(fields[i].name, fields[i].name_length);
#ifdef HAVE_RUBY_ENCODING_H
rb_enc_associate(rb_field, conn_enc);
if (default_internal_enc) {
rb_field = rb_str_export_to_enc(rb_field, default_internal_enc);
}
#endif
rb_ary_store(field_list, (long)i, rb_field);
}
mysql_free_result(metadata);
return field_list;
}
static VALUE rb_mysql_get_ssl_cipher(VALUE self)
{
const char *cipher;
VALUE rb_str;
GET_CLIENT(self);
cipher = mysql_get_ssl_cipher(wrapper->client);
if (cipher == NULL) {
return Qnil;
}
rb_str = rb_str_new2(cipher);
#ifdef HAVE_RUBY_ENCODING_H
rb_enc_associate(rb_str, rb_utf8_encoding());
#endif
return rb_str;
}
static VALUE rb_connect(VALUE self, VALUE user, VALUE pass, VALUE host, VALUE port, VALUE database, VALUE socket, VALUE flags) {
struct nogvl_connect_args args;
GET_CLIENT(self);
args.host = NIL_P(host) ? "localhost" : StringValuePtr(host);
args.unix_socket = NIL_P(socket) ? NULL : StringValuePtr(socket);
args.port = NIL_P(port) ? 3306 : NUM2INT(port);
args.user = NIL_P(user) ? NULL : StringValuePtr(user);
args.passwd = NIL_P(pass) ? NULL : StringValuePtr(pass);
args.db = NIL_P(database) ? NULL : StringValuePtr(database);
args.mysql = wrapper->client;
args.client_flag = NUM2ULONG(flags);
if (rb_thread_blocking_region(nogvl_connect, &args, RUBY_UBF_IO, 0) == Qfalse) {
// unable to connect
return rb_raise_mysql2_error(wrapper);
}
return self;
}
static VALUE finish_and_mark_inactive(void *args) {
VALUE self;
MYSQL_RES *result;
self = (VALUE)args;
GET_CLIENT(self);
if (wrapper->active) {
// if we got here, the result hasn't been read off the wire yet
// so lets do that and then throw it away because we have no way
// of getting it back up to the caller from here
result = (MYSQL_RES *)rb_thread_blocking_region(nogvl_store_result, wrapper, RUBY_UBF_IO, 0);
mysql_free_result(result);
wrapper->active = 0;
}
return Qnil;
}