WL#2360 Performance schema

Part V: performance schema implementation

storage/perfschema/table_all_instr.h

@@ -0,0 +1,168 @@
+/* Copyright (C) 2008-2009 Sun Microsystems, Inc
+
+  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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#ifndef TABLE_ALL_INSTR_H
+#define TABLE_ALL_INSTR_H
+
+/**
+  @file storage/perfschema/table_all_instr.h
+  Abstract tables for all instruments (declarations).
+*/
+
+#include "pfs_instr_class.h"
+#include "pfs_instr.h"
+#include "pfs_engine_table.h"
+
+/**
+  @addtogroup Performance_schema_tables
+  @{
+*/
+
+/** Position of a cursor on table_all_instr_class. */
+struct pos_all_instr_class : public PFS_double_index,
+                             public PFS_instrument_view_constants
+{
+  pos_all_instr_class()
+    : PFS_double_index(VIEW_MUTEX, 1)
+  {}
+
+  inline void reset(void)
+  {
+    m_index_1= VIEW_MUTEX;
+    m_index_2= 1;
+  }
+
+  inline bool has_more_view(void)
+  { return (m_index_1 <= VIEW_FILE); }
+
+  inline void next_view(void)
+  {
+    m_index_1++;
+    /* Instrument keys start at 1, not 0. */
+    m_index_2= 1;
+  }
+};
+
+/**
+  Abstract table, a union of all instrumentations class metadata.
+  This table is a union of:
+  - a view on all mutex classes,
+  - a view on all rwlock classes,
+  - a view on all cond classes,
+  - a view on all file classes
+*/
+class table_all_instr_class : public PFS_readonly_table
+{
+public:
+  virtual int rnd_next();
+  virtual int rnd_pos(const void *pos);
+  virtual void reset_position(void);
+
+protected:
+  table_all_instr_class(const PFS_engine_table_share *share);
+
+public:
+  ~table_all_instr_class()
+  {}
+
+protected:
+  /**
+    Build a row.
+    @param klass                      the instrument class
+  */
+  virtual void make_instr_row(PFS_instr_class *klass)= 0;
+
+  /** Current position. */
+  pos_all_instr_class m_pos;
+  /** Next position. */
+  pos_all_instr_class m_next_pos;
+};
+
+/** Position of a cursor on table_all_instr. */
+struct pos_all_instr : public PFS_double_index,
+                       public PFS_instrument_view_constants
+{
+  pos_all_instr()
+    : PFS_double_index(VIEW_MUTEX, 0)
+  {}
+
+  inline void reset(void)
+  {
+    m_index_1= VIEW_MUTEX;
+    m_index_2= 0;
+  }
+
+  inline bool has_more_view(void)
+  { return (m_index_1 <= VIEW_FILE); }
+
+  inline void next_view(void)
+  {
+    m_index_1++;
+    m_index_2= 0;
+  }
+};
+
+/**
+  Abstract table, a union of all instrumentations instances.
+  This table is a union of:
+  - a view on all mutex instances,
+  - a view on all rwlock instances,
+  - a view on all cond instances,
+  - a view on all file instances
+*/
+class table_all_instr : public PFS_readonly_table
+{
+public:
+  virtual int rnd_next();
+  virtual int rnd_pos(const void *pos);
+  virtual void reset_position(void);
+
+protected:
+  table_all_instr(const PFS_engine_table_share *share);
+
+public:
+  ~table_all_instr()
+  {}
+
+protected:
+  /**
+    Build a row in the mutex instance view.
+    @param pfs                        the mutex instance
+  */
+  virtual void make_mutex_row(PFS_mutex *pfs)= 0;
+  /**
+    Build a row in the rwlock instance view.
+    @param pfs                        the rwlock instance
+  */
+  virtual void make_rwlock_row(PFS_rwlock *pfs)= 0;
+  /**
+    Build a row in the condition instance view.
+    @param pfs                        the condition instance
+  */
+  virtual void make_cond_row(PFS_cond *pfs)= 0;
+  /**
+    Build a row in the file instance view.
+    @param pfs                        the file instance
+  */
+  virtual void make_file_row(PFS_file *pfs)= 0;
+
+  /** Current position. */
+  pos_all_instr m_pos;
+  /** Next position. */
+  pos_all_instr m_next_pos;
+};
+
+/** @} */
+#endif