Bug#55416 Renaming of performance_schema tables for 5.5

Removed table SETUP_OBJECTS. Renamed table PROCESSLIST to THREADS. Renamed table EVENTS_WAITS_SUMMARY_BY_EVENT_NAME to EVENTS_WAITS_SUMMARY_GLOBAL_BY_EVENT_NAME. Adjusted Makefiles, code and tests accordingly.
2025-07-30 16:24:05 +03:00 · 2010-08-12 08:08:52 -06:00
parent ad264fa287
commit 26f1efd981
57 changed files with 598 additions and 1143 deletions
--- a/storage/perfschema/table_threads.cc
+++ b/storage/perfschema/table_threads.cc
@ -0,0 +1,177 @@
+/* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+
+  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,
+  51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
+
+/**
+  @file storage/perfschema/table_threads.cc
+  Table THREADS (implementation).
+*/
+
+#include "my_global.h"
+#include "my_pthread.h"
+#include "table_threads.h"
+#include "pfs_instr_class.h"
+#include "pfs_instr.h"
+
+THR_LOCK table_threads::m_table_lock;
+
+static const TABLE_FIELD_TYPE field_types[]=
+{
+  {
+    { C_STRING_WITH_LEN("THREAD_ID") },
+    { C_STRING_WITH_LEN("int(11)") },
+    { NULL, 0}
+  },
+  {
+    { C_STRING_WITH_LEN("ID") },
+    { C_STRING_WITH_LEN("int(11)") },
+    { NULL, 0}
+  },
+  {
+    { C_STRING_WITH_LEN("NAME") },
+    { C_STRING_WITH_LEN("varchar(64)") },
+    { NULL, 0}
+  }
+};
+
+TABLE_FIELD_DEF
+table_threads::m_field_def=
+{ 3, field_types };
+
+PFS_engine_table_share
+table_threads::m_share=
+{
+  { C_STRING_WITH_LEN("THREADS") },
+  &pfs_readonly_acl,
+  &table_threads::create,
+  NULL, /* write_row */
+  NULL, /* delete_all_rows */
+  1000, /* records */
+  sizeof(PFS_simple_index), /* ref length */
+  &m_table_lock,
+  &m_field_def,
+  false /* checked */
+};
+
+PFS_engine_table* table_threads::create(void)
+{
+  return new table_threads();
+}
+
+table_threads::table_threads()
+  : PFS_engine_table(&m_share, &m_pos),
+  m_row_exists(false), m_pos(0), m_next_pos(0)
+{}
+
+void table_threads::reset_position(void)
+{
+  m_pos.m_index= 0;
+  m_next_pos.m_index= 0;
+}
+
+int table_threads::rnd_next(void)
+{
+  PFS_thread *pfs;
+
+  for (m_pos.set_at(&m_next_pos);
+       m_pos.m_index < thread_max;
+       m_pos.next())
+  {
+    pfs= &thread_array[m_pos.m_index];
+    if (pfs->m_lock.is_populated())
+    {
+      make_row(pfs);
+      m_next_pos.set_after(&m_pos);
+      return 0;
+    }
+  }
+
+  return HA_ERR_END_OF_FILE;
+}
+
+int table_threads::rnd_pos(const void *pos)
+{
+  PFS_thread *pfs;
+
+  set_position(pos);
+  DBUG_ASSERT(m_pos.m_index < thread_max);
+  pfs= &thread_array[m_pos.m_index];
+  if (pfs->m_lock.is_populated())
+  {
+    make_row(pfs);
+    return 0;
+  }
+
+  return HA_ERR_RECORD_DELETED;
+}
+
+void table_threads::make_row(PFS_thread *pfs)
+{
+  pfs_lock lock;
+  PFS_thread_class *safe_class;
+
+  m_row_exists= false;
+
+  /* Protect this reader against thread termination */
+  pfs->m_lock.begin_optimistic_lock(&lock);
+
+  safe_class= sanitize_thread_class(pfs->m_class);
+  if (unlikely(safe_class == NULL))
+    return;
+
+  m_row.m_thread_internal_id= pfs->m_thread_internal_id;
+  m_row.m_thread_id= pfs->m_thread_id;
+  m_row.m_name= safe_class->m_name;
+  m_row.m_name_length= safe_class->m_name_length;
+
+  if (pfs->m_lock.end_optimistic_lock(&lock))
+    m_row_exists= true;
+}
+
+int table_threads::read_row_values(TABLE *table,
+                                   unsigned char *,
+                                   Field **fields,
+                                   bool read_all)
+{
+  Field *f;
+
+  if (unlikely(! m_row_exists))
+    return HA_ERR_RECORD_DELETED;
+
+  /* Set the null bits */
+  DBUG_ASSERT(table->s->null_bytes == 0);
+
+  for (; (f= *fields) ; fields++)
+  {
+    if (read_all || bitmap_is_set(table->read_set, f->field_index))
+    {
+      switch(f->field_index)
+      {
+      case 0: /* THREAD_ID */
+        set_field_ulong(f, m_row.m_thread_internal_id);
+        break;
+      case 1: /* ID */
+        set_field_ulong(f, m_row.m_thread_id);
+        break;
+      case 2: /* NAME */
+        set_field_varchar_utf8(f, m_row.m_name, m_row.m_name_length);
+        break;
+      default:
+        DBUG_ASSERT(false);
+      }
+    }
+  }
+  return 0;
+}
+