utilities.h

Go to the documentation of this file.

/* Copyright (c) 2021, 2024, Oracle and/or its affiliates.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.
 
   This program is designed to work with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have either included with
   the program or referenced in the documentation.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */
 
#ifndef GROUP_REPLICATION_PFS_UTILITIES_H
#define GROUP_REPLICATION_PFS_UTILITIES_H
 
#include <mysql/components/services/registry.h>
#include <mysql/service_plugin_registry.h>
 
#include <vector>
#include "mysql/components/services/pfs_plugin_table_service.h"
 
namespace gr {
namespace perfschema {
 
class Registry_guard {
 private:
  SERVICE_TYPE(registry) * m_registry{nullptr};
 
 public:
  Registry_guard() : m_registry{mysql_plugin_registry_acquire()} {}
 
  ~Registry_guard() {
    if (m_registry) mysql_plugin_registry_release(m_registry);
  }
 
  SERVICE_TYPE(registry) * get_registry() { return m_registry; }
};
 
class Position {
 private:
  unsigned int m_index{0};
  unsigned int m_max{0};
 
 public:
  void set_max(unsigned int max) { m_max = max; }
  bool has_more() { return m_index < m_max; }
  void next() { m_index++; }
  void reset() { m_index = 0; }
  unsigned int get_index() { return m_index; }
  void set_at(unsigned int index) { m_index = index; }
  void set_at(Position *pos) { m_index = pos->get_index(); }
  void set_after(Position *pos) { m_index = pos->get_index() + 1; }
};
 
}  // namespace perfschema
}  // namespace gr
 
#endif