Temporary commit of merge of MariaDB 10.0-base and MySQL 5.6

1 files changed, 299 insertions, 0 deletions

diff --git a/storage/perfschema/table_ews_by_thread_by_event_name.cc b/storage/perfschema/table_ews_by_thread_by_event_name.cc
new file mode 100644
index 00000000000..25e3cf395c4
--- /dev/null
+++ b/storage/perfschema/table_ews_by_thread_by_event_name.cc
@@ -0,0 +1,299 @@
+/* Copyright (c) 2010, 2011, 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+/**
+  @file storage/perfschema/table_ews_by_thread_by_event_name.cc
+  Table EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME (implementation).
+*/
+
+#include "my_global.h"
+#include "my_pthread.h"
+#include "pfs_instr_class.h"
+#include "pfs_column_types.h"
+#include "pfs_column_values.h"
+#include "table_ews_by_thread_by_event_name.h"
+#include "pfs_global.h"
+#include "pfs_visitor.h"
+
+THR_LOCK table_ews_by_thread_by_event_name::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("EVENT_NAME") },
+    { C_STRING_WITH_LEN("varchar(128)") },
+    { NULL, 0}
+  },
+  {
+    { C_STRING_WITH_LEN("COUNT_STAR") },
+    { C_STRING_WITH_LEN("bigint(20)") },
+    { NULL, 0}
+  },
+  {
+    { C_STRING_WITH_LEN("SUM_TIMER_WAIT") },
+    { C_STRING_WITH_LEN("bigint(20)") },
+    { NULL, 0}
+  },
+  {
+    { C_STRING_WITH_LEN("MIN_TIMER_WAIT") },
+    { C_STRING_WITH_LEN("bigint(20)") },
+    { NULL, 0}
+  },
+  {
+    { C_STRING_WITH_LEN("AVG_TIMER_WAIT") },
+    { C_STRING_WITH_LEN("bigint(20)") },
+    { NULL, 0}
+  },
+  {
+    { C_STRING_WITH_LEN("MAX_TIMER_WAIT") },
+    { C_STRING_WITH_LEN("bigint(20)") },
+    { NULL, 0}
+  }
+};
+
+TABLE_FIELD_DEF
+table_ews_by_thread_by_event_name::m_field_def=
+{ 7, field_types };
+
+PFS_engine_table_share
+table_ews_by_thread_by_event_name::m_share=
+{
+  { C_STRING_WITH_LEN("events_waits_summary_by_thread_by_event_name") },
+  &pfs_truncatable_acl,
+  table_ews_by_thread_by_event_name::create,
+  NULL, /* write_row */
+  table_ews_by_thread_by_event_name::delete_all_rows,
+  NULL, /* get_row_count */
+  1000, /* records */
+  sizeof(pos_ews_by_thread_by_event_name),
+  &m_table_lock,
+  &m_field_def,
+  false /* checked */
+};
+
+PFS_engine_table*
+table_ews_by_thread_by_event_name::create(void)
+{
+  return new table_ews_by_thread_by_event_name();
+}
+
+int
+table_ews_by_thread_by_event_name::delete_all_rows(void)
+{
+  reset_events_waits_by_thread();
+  return 0;
+}
+
+table_ews_by_thread_by_event_name::table_ews_by_thread_by_event_name()
+  : PFS_engine_table(&m_share, &m_pos),
+    m_row_exists(false), m_pos(), m_next_pos()
+{}
+
+void table_ews_by_thread_by_event_name::reset_position(void)
+{
+  m_pos.reset();
+  m_next_pos.reset();
+}
+
+int table_ews_by_thread_by_event_name::rnd_next(void)
+{
+  PFS_thread *thread;
+  PFS_instr_class *instr_class;
+
+  for (m_pos.set_at(&m_next_pos);
+       m_pos.has_more_thread();
+       m_pos.next_thread())
+  {
+    thread= &thread_array[m_pos.m_index_1];
+
+    /*
+      Important note: the thread scan is the outer loop (index 1),
+      to minimize the number of calls to atomic operations.
+    */
+    if (thread->m_lock.is_populated())
+    {
+      for ( ;
+           m_pos.has_more_view();
+           m_pos.next_view())
+      {
+        switch (m_pos.m_index_2)
+        {
+        case pos_ews_by_thread_by_event_name::VIEW_MUTEX:
+          instr_class= find_mutex_class(m_pos.m_index_3);
+          break;
+        case pos_ews_by_thread_by_event_name::VIEW_RWLOCK:
+          instr_class= find_rwlock_class(m_pos.m_index_3);
+          break;
+        case pos_ews_by_thread_by_event_name::VIEW_COND:
+          instr_class= find_cond_class(m_pos.m_index_3);
+          break;
+        case pos_ews_by_thread_by_event_name::VIEW_FILE:
+          instr_class= find_file_class(m_pos.m_index_3);
+          break;
+        case pos_ews_by_thread_by_event_name::VIEW_TABLE:
+          instr_class= find_table_class(m_pos.m_index_3);
+          break;
+        case pos_ews_by_thread_by_event_name::VIEW_SOCKET:
+          instr_class= find_socket_class(m_pos.m_index_3);
+          break;
+        case pos_ews_by_thread_by_event_name::VIEW_IDLE:
+          instr_class= find_idle_class(m_pos.m_index_3);
+          break;
+        default:
+          DBUG_ASSERT(false);
+          instr_class= NULL;
+          break;
+        }
+
+        if (instr_class != NULL)
+        {
+          make_row(thread, instr_class);
+          m_next_pos.set_after(&m_pos);
+          return 0;
+        }
+      }
+    }
+  }
+
+  return HA_ERR_END_OF_FILE;
+}
+
+int
+table_ews_by_thread_by_event_name::rnd_pos(const void *pos)
+{
+  PFS_thread *thread;
+  PFS_instr_class *instr_class;
+
+  set_position(pos);
+  DBUG_ASSERT(m_pos.m_index_1 < thread_max);
+
+  thread= &thread_array[m_pos.m_index_1];
+  if (! thread->m_lock.is_populated())
+    return HA_ERR_RECORD_DELETED;
+
+  switch (m_pos.m_index_2)
+  {
+  case pos_ews_by_thread_by_event_name::VIEW_MUTEX:
+    instr_class= find_mutex_class(m_pos.m_index_3);
+    break;
+  case pos_ews_by_thread_by_event_name::VIEW_RWLOCK:
+    instr_class= find_rwlock_class(m_pos.m_index_3);
+    break;
+  case pos_ews_by_thread_by_event_name::VIEW_COND:
+    instr_class= find_cond_class(m_pos.m_index_3);
+    break;
+  case pos_ews_by_thread_by_event_name::VIEW_FILE:
+    instr_class= find_file_class(m_pos.m_index_3);
+    break;
+  case pos_ews_by_thread_by_event_name::VIEW_TABLE:
+    instr_class= find_table_class(m_pos.m_index_3);
+    break;
+  case pos_ews_by_thread_by_event_name::VIEW_SOCKET:
+    instr_class= find_socket_class(m_pos.m_index_3);
+    break;
+  case pos_ews_by_thread_by_event_name::VIEW_IDLE:
+    instr_class= find_idle_class(m_pos.m_index_3);
+    break;
+  default:
+    DBUG_ASSERT(false);
+    instr_class= NULL;
+  }
+
+  if (instr_class)
+  {
+    make_row(thread, instr_class);
+    return 0;
+  }
+  return HA_ERR_RECORD_DELETED;
+}
+
+void table_ews_by_thread_by_event_name
+::make_row(PFS_thread *thread, PFS_instr_class *klass)
+{
+  pfs_lock lock;
+  m_row_exists= false;
+
+  /* Protect this reader against a thread termination */
+  thread->m_lock.begin_optimistic_lock(&lock);
+
+  m_row.m_thread_internal_id= thread->m_thread_internal_id;
+
+  m_row.m_event_name.make_row(klass);
+
+  PFS_connection_wait_visitor visitor(klass);
+  PFS_connection_iterator::visit_thread(thread, &visitor);
+
+  /*
+     If the aggregation for this class is deferred, then we must pull the
+     current wait stats from the instances associated with this thread.
+  */  
+  if (klass->is_deferred())
+  {
+    /* Visit instances owned by this thread. Do not visit the class. */
+    PFS_instance_wait_visitor inst_visitor;
+    PFS_instance_iterator::visit_instances(klass, &inst_visitor,
+                                           thread, false);
+    /* Combine the deferred stats and global stats */
+    visitor.m_stat.aggregate(&inst_visitor.m_stat);
+  }
+
+  if (! thread->m_lock.end_optimistic_lock(&lock))
+    return;
+
+  m_row_exists= true;
+
+  get_normalizer(klass);
+  m_row.m_stat.set(m_normalizer, & visitor.m_stat);
+}
+
+int table_ews_by_thread_by_event_name
+::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: /* EVENT_NAME */
+        m_row.m_event_name.set_field(f);
+        break;
+      default: /* 2, ... COUNT/SUM/MIN/AVG/MAX */
+        m_row.m_stat.set_field(f->field_index - 2, f);
+        break;
+      }
+    }
+  }
+
+  return 0;
+}
+