Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 155 insertions, 0 deletions

diff --git a/storage/perfschema/table_status_by_host.h b/storage/perfschema/table_status_by_host.h
new file mode 100644
index 00000000..4e28966c
--- /dev/null
+++ b/storage/perfschema/table_status_by_host.h
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+/* Copyright (c) 2015, 2023, 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_STATUS_BY_HOST_H
+#define TABLE_STATUS_BY_HOST_H
+
+/**
+  @file storage/perfschema/table_status_by_host.h
+  Table STATUS_BY_HOST (declarations).
+*/
+
+#include "pfs_column_types.h"
+#include "pfs_engine_table.h"
+#include "pfs_instr_class.h"
+#include "pfs_instr.h"
+#include "pfs_host.h"
+#include "table_helper.h"
+#include "pfs_variable.h"
+#include "pfs_buffer_container.h"
+
+/**
+  @addtogroup Performance_schema_tables
+  @{
+*/
+
+/**
+  A row of table
+  PERFORMANCE_SCHEMA.STATUS_BY_HOST.
+*/
+struct row_status_by_host
+{
+  /** Column HOST */
+  PFS_host_row m_host;
+  /** Column VARIABLE_NAME. */
+  PFS_variable_name_row m_variable_name;
+  /** Column VARIABLE_VALUE. */
+  PFS_variable_value_row m_variable_value;
+};
+
+/**
+  Position of a cursor on
+  PERFORMANCE_SCHEMA.STATUS_BY_HOST.
+  Index 1 on host (0 based)
+  Index 2 on status variable (0 based)
+*/
+struct pos_status_by_host
+: public PFS_double_index
+{
+  pos_status_by_host()
+    : PFS_double_index(0, 0)
+  {}
+
+  inline void reset(void)
+  {
+    m_index_1= 0;
+    m_index_2= 0;
+  }
+
+  inline bool has_more_host(void)
+  { return (m_index_1 < global_host_container.get_row_count()); }
+
+  inline void next_host(void)
+  {
+    m_index_1++;
+    m_index_2= 0;
+  }
+};
+
+/**
+  Store and retrieve table state information for queries that reinstantiate
+  the table object.
+*/
+class table_status_by_host_context : public PFS_table_context
+{
+public:
+  table_status_by_host_context(ulonglong current_version, bool restore) :
+    PFS_table_context(current_version, global_host_container.get_row_count(), restore, THR_PFS_SBH) { }
+};
+
+/** Table PERFORMANCE_SCHEMA.STATUS_BY_HOST. */
+class table_status_by_host : public PFS_engine_table
+{
+  typedef pos_status_by_host pos_t;
+
+public:
+  static PFS_engine_table_share_state m_share_state;
+  /** Table share */
+  static PFS_engine_table_share m_share;
+  static PFS_engine_table* create();
+  static int delete_all_rows();
+  static ha_rows get_row_count();
+
+  virtual int rnd_init(bool scan);
+  virtual int rnd_next();
+  virtual int rnd_pos(const void *pos);
+  virtual void reset_position(void);
+
+protected:
+  virtual int read_row_values(TABLE *table,
+                              unsigned char *buf,
+                              Field **fields,
+                              bool read_all);
+  table_status_by_host();
+
+public:
+  ~table_status_by_host()
+  {}
+
+protected:
+  int materialize(PFS_thread *thread);
+  void make_row(PFS_host *pfs_host, const Status_variable *status_var);
+
+private:
+  /** Table share lock. */
+  static THR_LOCK m_table_lock;
+  /** Fields definition. */
+  static TABLE_FIELD_DEF m_field_def;
+
+  /** Status variable cache for one host. */
+  PFS_status_variable_cache m_status_cache;
+
+  /** Current row. */
+  row_status_by_host m_row;
+  /** True if the current row exists. */
+  bool m_row_exists;
+  /** Current position. */
+  pos_t m_pos;
+  /** Next position. */
+  pos_t m_next_pos;
+
+  /** Table context with global status array version and map of materialized threads. */
+  table_status_by_host_context *m_context;
+};
+
+/** @} */
+#endif