mysql-5.7.39

storage/perfschema/table_processlist.h

@@ -0,0 +1,133 @@
+/* Copyright (c) 2008, 2022, 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, version 2.0,
+  as published by the Free Software Foundation.
+
+  This program is also distributed 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 included with MySQL.
+
+  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, version 2.0, 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 TABLE_PROCESSLIST_H
+#define TABLE_PROCESSLIST_H
+
+/**
+  @file storage/perfschema/table_processlist.h
+  TABLE THREADS.
+*/
+
+#include <sys/types.h>
+#include <time.h>
+#include <algorithm>
+
+#include "my_hostname.h"
+// #include "my_inttypes.h"
+#include "cursor_by_thread.h"
+#include "pfs_column_types.h"
+
+struct PFS_thread;
+
+/**
+  @addtogroup performance_schema_tables
+  @{
+*/
+
+/**
+  A row of PERFORMANCE_SCHEMA.PROCESSLIST.
+*/
+struct row_processlist {
+  /** Column ID. */
+  ulonglong m_processlist_id;
+  /** Column USER. */
+  char m_username[USERNAME_LENGTH];
+  /** Length in bytes of @c m_username. */
+  uint m_username_length;
+  /** Column HOST. */
+  char m_hostname[HOST_AND_PORT_LENGTH];
+  /** Length in bytes of @c m_hostname. */
+  uint m_hostname_length;
+  /** Port. */
+  uint m_port;
+  /** Column DB. */
+  char m_dbname[NAME_LEN];
+  /** Length in bytes of @c m_dbname. */
+  uint m_dbname_length;
+  /** Column COMMAND. */
+  int m_command;
+  /** Column TIME. */
+  time_t m_start_time;
+  /** Column STATE. */
+  const char *m_processlist_state_ptr;
+  /** Length in bytes of @c m_processlist_state_ptr. */
+  uint m_processlist_state_length;
+  /** Column INFO. */
+  const char *m_processlist_info_ptr;
+  /** Length in bytes of @c m_processlist_info_ptr. */
+  uint m_processlist_info_length;
+};
+
+enum enum_priv_processlist {
+  /** User is not allowed to see any data. */
+  PROCESSLIST_DENIED,
+  /** User does not have the PROCESS_ACL priviledge. */
+  PROCESSLIST_USER_ONLY,
+  /** User has the PROCESS_ACL priviledge. */
+  PROCESSLIST_ALL
+};
+
+struct row_priv_processlist {
+  enum enum_priv_processlist m_auth;
+  char m_priv_user[USERNAME_LENGTH];
+  size_t m_priv_user_length;
+};
+
+/** Table PERFORMANCE_SCHEMA.PROCESSLIST. */
+class table_processlist : public cursor_by_thread {
+ public:
+  static PFS_engine_table_share_state m_share_state;
+  /** Table share */
+  static PFS_engine_table_share m_share;
+  /** Table builder */
+  static PFS_engine_table *create();
+
+ protected:
+  table_processlist();
+
+  virtual int rnd_init(bool scan);
+
+  virtual int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
+                      bool read_all);
+  int set_access(void);
+
+ public:
+  virtual ~table_processlist() {}
+
+ private:
+  virtual void make_row(PFS_thread *pfs);
+  /** Table share lock. */
+  static THR_LOCK m_table_lock;
+  /** Fields definition. */
+  static TABLE_FIELD_DEF m_field_def;
+
+  /** Current row. */
+  row_processlist m_row;
+  /** Row privileges. */
+  row_priv_processlist m_row_priv;
+  /** True if the current row exists. */
+  bool m_row_exists;
+};
+
+/** @} */
+#endif