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, 157 insertions, 0 deletions

diff --git a/sql/event_scheduler.h b/sql/event_scheduler.h
new file mode 100644
index 00000000..59ac923c
--- /dev/null
+++ b/sql/event_scheduler.h
@@ -0,0 +1,157 @@
+#ifndef _EVENT_SCHEDULER_H_
+#define _EVENT_SCHEDULER_H_
+/* Copyright (c) 2004, 2013, 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, Fifth Floor, Boston, MA 02110-1335 USA */
+
+/**
+  @addtogroup Event_Scheduler
+  @{
+*/
+/**
+  @file
+
+  Declarations of the scheduler thread class
+  and related functionality.
+
+  This file is internal to Event_Scheduler module. Please do not
+  include it directly.  All public declarations of Event_Scheduler
+  module are in events.h and event_data_objects.h.
+*/
+
+
+class Event_queue;
+class Event_job_data;
+class Event_db_repository;
+class Event_queue_element_for_exec;
+class Events;
+class THD;
+
+void
+pre_init_event_thread(THD* thd);
+
+bool
+post_init_event_thread(THD* thd);
+
+void
+deinit_event_thread(THD *thd);
+
+
+class Event_worker_thread
+{
+public:
+  static void
+  init(Event_db_repository *db_repository_arg)
+  {
+    db_repository= db_repository_arg;
+  }
+
+  void
+  run(THD *thd, Event_queue_element_for_exec *event);
+
+private:
+  void
+  print_warnings(THD *thd, Event_job_data *et);
+
+  static Event_db_repository *db_repository;
+};
+
+
+class Event_scheduler
+{
+public:
+  Event_scheduler(Event_queue *event_queue_arg);
+  ~Event_scheduler();
+
+
+  /* State changing methods follow */
+
+  bool
+  start(int *err_no);
+
+  bool
+  stop();
+
+  /*
+    Need to be public because has to be called from the function
+    passed to pthread_create.
+  */
+  bool
+  run(THD *thd);
+
+
+  /* Information retrieving methods follow */
+  bool
+  is_running();
+
+  void
+  dump_internal_status();
+
+private:
+  uint
+  workers_count();
+
+  /* helper functions */
+  bool
+  execute_top(Event_queue_element_for_exec *event_name);
+
+  /* helper functions for working with mutexes & conditionals */
+  void
+  lock_data(const char *func, uint line);
+
+  void
+  unlock_data(const char *func, uint line);
+
+  void
+  cond_wait(THD *thd, struct timespec *abstime, const PSI_stage_info *stage,
+            const char *src_func, const char *src_file, uint src_line);
+
+  mysql_mutex_t LOCK_scheduler_state;
+
+  enum enum_state
+  {
+    INITIALIZED = 0,
+    RUNNING,
+    STOPPING
+  };
+
+  /* This is the current status of the life-cycle of the scheduler. */
+  enum enum_state state;
+
+  THD *scheduler_thd;
+
+  mysql_cond_t COND_state;
+
+  Event_queue *queue;
+
+  uint mutex_last_locked_at_line;
+  uint mutex_last_unlocked_at_line;
+  const char* mutex_last_locked_in_func;
+  const char* mutex_last_unlocked_in_func;
+  bool mutex_scheduler_data_locked;
+  bool waiting_on_cond;
+
+  ulonglong started_events;
+
+private:
+  /* Prevent use of these */
+  Event_scheduler(const Event_scheduler &);
+  void operator=(Event_scheduler &);
+};
+
+/**
+  @} (End of group Event_Scheduler)
+*/
+
+#endif /* _EVENT_SCHEDULER_H_ */