MYSQL_RES *do_mysql_cCommand_execute_async(VALUE self, VALUE connection, MYSQL *db, VALUE query) {
int retval;
if ((retval = mysql_ping(db)) && mysql_errno(db) == CR_SERVER_GONE_ERROR) {
do_mysql_full_connect(connection, db);
}
struct timeval start;
const char *str = rb_str_ptr_readonly(query);
long len = rb_str_len(query);
gettimeofday(&start, NULL);
retval = mysql_send_query(db, str, len);
CHECK_AND_RAISE(retval, query);
int socket_fd = db->net.fd;
fd_set rset;
while (1) {
FD_ZERO(&rset);
FD_SET(socket_fd, &rset);
retval = rb_thread_select(socket_fd + 1, &rset, NULL, NULL, NULL);
if (retval < 0) {
rb_sys_fail(0);
}
if (retval == 0) {
continue;
}
if (db->status == MYSQL_STATUS_READY) {
break;
}
}
retval = mysql_read_query_result(db);
CHECK_AND_RAISE(retval, query);
data_objects_debug(connection, query, &start);
MYSQL_RES *result = mysql_store_result(db);
if (!result) {
CHECK_AND_RAISE(mysql_errno(db), query);
}
return result;
}
/*
* even though we did rb_thread_select before calling this, a large
* response can overflow the socket buffers and cause us to eventually
* block while calling mysql_read_query_result
*/
static VALUE nogvl_read_query_result(void *ptr) {
MYSQL * client = ptr;
my_bool res = mysql_read_query_result(client);
return res == 0 ? Qtrue : Qfalse;
}
/*
* even though we did rb_thread_select before calling this, a large
* response can overflow the socket buffers and cause us to eventually
* block while calling mysql_read_query_result
*/
static void *nogvl_read_query_result(void *ptr) {
MYSQL * client = ptr;
my_bool res = mysql_read_query_result(client);
return (void *)(res == 0 ? Qtrue : Qfalse);
}
