Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

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

1 files changed, 301 insertions, 0 deletions

diff --git a/storage/perfschema/pfs_events_waits.cc b/storage/perfschema/pfs_events_waits.cc
new file mode 100644
index 00000000..b51ee5fd
--- /dev/null
+++ b/storage/perfschema/pfs_events_waits.cc
@@ -0,0 +1,301 @@
+/* Copyright (c) 2008, 2015, 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, 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,
+  51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
+
+/**
+  @file storage/perfschema/pfs_events_waits.cc
+  Events waits data structures (implementation).
+*/
+
+#include "my_global.h"
+#include "my_sys.h"
+#include "pfs_global.h"
+#include "pfs_instr_class.h"
+#include "pfs_instr.h"
+#include "pfs_user.h"
+#include "pfs_host.h"
+#include "pfs_account.h"
+#include "pfs_events_waits.h"
+#include "pfs_atomic.h"
+#include "pfs_buffer_container.h"
+#include "pfs_builtin_memory.h"
+#include "m_string.h"
+
+PFS_ALIGNED ulong events_waits_history_long_size= 0;
+/** Consumer flag for table EVENTS_WAITS_CURRENT. */
+PFS_ALIGNED bool flag_events_waits_current= false;
+/** Consumer flag for table EVENTS_WAITS_HISTORY. */
+PFS_ALIGNED bool flag_events_waits_history= false;
+/** Consumer flag for table EVENTS_WAITS_HISTORY_LONG. */
+PFS_ALIGNED bool flag_events_waits_history_long= false;
+/** Consumer flag for the global instrumentation. */
+PFS_ALIGNED bool flag_global_instrumentation= false;
+/** Consumer flag for the per thread instrumentation. */
+PFS_ALIGNED bool flag_thread_instrumentation= false;
+
+/** True if EVENTS_WAITS_HISTORY_LONG circular buffer is full. */
+PFS_ALIGNED bool events_waits_history_long_full= false;
+/** Index in EVENTS_WAITS_HISTORY_LONG circular buffer. */
+PFS_ALIGNED PFS_cacheline_uint32 events_waits_history_long_index;
+/** EVENTS_WAITS_HISTORY_LONG circular buffer. */
+PFS_ALIGNED PFS_events_waits *events_waits_history_long_array= NULL;
+
+/**
+  Initialize table EVENTS_WAITS_HISTORY_LONG.
+  @param events_waits_history_long_sizing       table sizing
+*/
+int init_events_waits_history_long(uint events_waits_history_long_sizing)
+{
+  events_waits_history_long_size= events_waits_history_long_sizing;
+  events_waits_history_long_full= false;
+  PFS_atomic::store_u32(&events_waits_history_long_index.m_u32, 0);
+
+  if (events_waits_history_long_size == 0)
+    return 0;
+
+  events_waits_history_long_array=
+    PFS_MALLOC_ARRAY(& builtin_memory_waits_history_long,
+                     events_waits_history_long_size,
+                     sizeof(PFS_events_waits), PFS_events_waits,
+                     MYF(MY_ZEROFILL));
+
+  return (events_waits_history_long_array ? 0 : 1);
+}
+
+/** Cleanup table EVENTS_WAITS_HISTORY_LONG. */
+void cleanup_events_waits_history_long(void)
+{
+  PFS_FREE_ARRAY(& builtin_memory_waits_history_long,
+                 events_waits_history_long_size, sizeof(PFS_events_waits),
+                 events_waits_history_long_array);
+  events_waits_history_long_array= NULL;
+}
+
+static inline void copy_events_waits(PFS_events_waits *dest,
+                                     const PFS_events_waits *source)
+{
+  memcpy(dest, source, sizeof(PFS_events_waits));
+}
+
+/**
+  Insert a wait record in table EVENTS_WAITS_HISTORY.
+  @param thread             thread that executed the wait
+  @param wait               record to insert
+*/
+void insert_events_waits_history(PFS_thread *thread, PFS_events_waits *wait)
+{
+  if (unlikely(events_waits_history_per_thread == 0))
+    return;
+
+  uint index= thread->m_waits_history_index;
+
+  /*
+    A concurrent thread executing TRUNCATE TABLE EVENTS_WAITS_CURRENT
+    could alter the data that this thread is inserting,
+    causing a potential race condition.
+    We are not testing for this and insert a possibly empty record,
+    to make this thread (the writer) faster.
+    This is ok, the readers of m_waits_history will filter this out.
+  */
+  copy_events_waits(&thread->m_waits_history[index], wait);
+
+  index++;
+  if (index >= events_waits_history_per_thread)
+  {
+    index= 0;
+    thread->m_waits_history_full= true;
+  }
+  thread->m_waits_history_index= index;
+}
+
+/**
+  Insert a wait record in table EVENTS_WAITS_HISTORY_LONG.
+  @param wait               record to insert
+*/
+void insert_events_waits_history_long(PFS_events_waits *wait)
+{
+  if (unlikely(events_waits_history_long_size == 0))
+    return;
+
+  uint index= PFS_atomic::add_u32(&events_waits_history_long_index.m_u32, 1);
+
+  index= index % events_waits_history_long_size;
+  if (index == 0)
+    events_waits_history_long_full= true;
+
+  /* See related comment in insert_events_waits_history. */
+  copy_events_waits(&events_waits_history_long_array[index], wait);
+}
+
+static void fct_reset_events_waits_current(PFS_thread *pfs_thread)
+{
+  PFS_events_waits *pfs_wait= pfs_thread->m_events_waits_stack;
+  PFS_events_waits *pfs_wait_last= pfs_wait + WAIT_STACK_SIZE;
+
+  for ( ; pfs_wait < pfs_wait_last; pfs_wait++)
+    pfs_wait->m_wait_class= NO_WAIT_CLASS;
+}
+
+
+/** Reset table EVENTS_WAITS_CURRENT data. */
+void reset_events_waits_current(void)
+{
+  global_thread_container.apply_all(fct_reset_events_waits_current);
+}
+
+static void fct_reset_events_waits_history(PFS_thread *pfs_thread)
+{
+  PFS_events_waits *wait= pfs_thread->m_waits_history;
+  PFS_events_waits *wait_last= wait + events_waits_history_per_thread;
+
+  pfs_thread->m_waits_history_index= 0;
+  pfs_thread->m_waits_history_full= false;
+  for ( ; wait < wait_last; wait++)
+    wait->m_wait_class= NO_WAIT_CLASS;
+}
+
+/** Reset table EVENTS_WAITS_HISTORY data. */
+void reset_events_waits_history(void)
+{
+  global_thread_container.apply_all(fct_reset_events_waits_history);
+}
+
+/** Reset table EVENTS_WAITS_HISTORY_LONG data. */
+void reset_events_waits_history_long(void)
+{
+  PFS_atomic::store_u32(&events_waits_history_long_index.m_u32, 0);
+  events_waits_history_long_full= false;
+
+  PFS_events_waits *wait= events_waits_history_long_array;
+  PFS_events_waits *wait_last= wait + events_waits_history_long_size;
+  for ( ; wait < wait_last; wait++)
+    wait->m_wait_class= NO_WAIT_CLASS;
+}
+
+static void fct_reset_events_waits_by_thread(PFS_thread *thread)
+{
+  PFS_account *account= sanitize_account(thread->m_account);
+  PFS_user *user= sanitize_user(thread->m_user);
+  PFS_host *host= sanitize_host(thread->m_host);
+  aggregate_thread_waits(thread, account, user, host);
+}
+
+/** Reset table EVENTS_WAITS_SUMMARY_BY_THREAD_BY_EVENT_NAME data. */
+void reset_events_waits_by_thread()
+{
+  global_thread_container.apply(fct_reset_events_waits_by_thread);
+}
+
+static void fct_reset_events_waits_by_account(PFS_account *pfs)
+{
+  PFS_user *user= sanitize_user(pfs->m_user);
+  PFS_host *host= sanitize_host(pfs->m_host);
+  pfs->aggregate_waits(user, host);
+}
+
+/** Reset table EVENTS_WAITS_SUMMARY_BY_ACCOUNT_BY_EVENT_NAME data. */
+void reset_events_waits_by_account()
+{
+  global_account_container.apply(fct_reset_events_waits_by_account);
+}
+
+static void fct_reset_events_waits_by_user(PFS_user *pfs)
+{
+  pfs->aggregate_waits();
+}
+
+/** Reset table EVENTS_WAITS_SUMMARY_BY_USER_BY_EVENT_NAME data. */
+void reset_events_waits_by_user()
+{
+  global_user_container.apply(fct_reset_events_waits_by_user);
+}
+
+static void fct_reset_events_waits_by_host(PFS_host *pfs)
+{
+  pfs->aggregate_waits();
+}
+
+/** Reset table EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME data. */
+void reset_events_waits_by_host()
+{
+  global_host_container.apply(fct_reset_events_waits_by_host);
+}
+
+static void fct_reset_table_waits_by_table(PFS_table_share *pfs)
+{
+  pfs->aggregate();
+}
+
+void reset_table_waits_by_table()
+{
+  global_table_share_container.apply(fct_reset_table_waits_by_table);
+}
+
+static void fct_reset_table_io_waits_by_table(PFS_table_share *pfs)
+{
+  pfs->aggregate_io();
+}
+
+void reset_table_io_waits_by_table()
+{
+  global_table_share_container.apply(fct_reset_table_io_waits_by_table);
+}
+
+static void fct_reset_table_lock_waits_by_table(PFS_table_share *pfs)
+{
+  pfs->aggregate_lock();
+}
+
+void reset_table_lock_waits_by_table()
+{
+  global_table_share_container.apply(fct_reset_table_lock_waits_by_table);
+}
+
+void fct_reset_table_waits_by_table_handle(PFS_table *pfs)
+{
+  pfs->sanitized_aggregate();
+}
+
+void reset_table_waits_by_table_handle()
+{
+  global_table_container.apply(fct_reset_table_waits_by_table_handle);
+}
+
+void fct_reset_table_io_waits_by_table_handle(PFS_table *pfs)
+{
+  pfs->sanitized_aggregate_io();
+}
+
+void reset_table_io_waits_by_table_handle()
+{
+  global_table_container.apply(fct_reset_table_io_waits_by_table_handle);
+}
+
+void fct_reset_table_lock_waits_by_table_handle(PFS_table *pfs)
+{
+  pfs->sanitized_aggregate_lock();
+}
+
+void reset_table_lock_waits_by_table_handle()
+{
+  global_table_container.apply(fct_reset_table_lock_waits_by_table_handle);
+}
+