1 files changed, 60 insertions, 0 deletions
diff --git a/sql/scheduler.h b/sql/scheduler.h
new file mode 100644
index 00000000000..8351cefda4c
--- /dev/null
+++ b/sql/scheduler.h
@@ -0,0 +1,60 @@
+/* Copyright (C) 2007 MySQL AB
+
+   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 */
+
+/*
+  Classes for the thread scheduler
+*/
+
+#ifdef USE_PRAGMA_INTERFACE
+#pragma interface
+#endif
+
+class THD;
+
+/* Functions used when manipulating threads */
+
+class scheduler_functions
+{
+public:
+  uint max_threads;
+  bool (*init)(void);
+  bool (*init_new_connection_thread)(void);
+  void (*add_connection)(THD *thd);
+  void (*post_kill_notification)(THD *thd);
+  bool (*end_thread)(THD *thd, bool cache_thread);
+  void (*end)(void);
+  scheduler_functions();
+};
+
+enum scheduler_types
+{
+  SCHEDULER_ONE_THREAD_PER_CONNECTION=1,
+  SCHEDULER_NO_THREADS,
+  SCHEDULER_POOL_OF_THREADS
+};
+
+void one_thread_per_connection_scheduler(scheduler_functions* func);
+void one_thread_scheduler(scheduler_functions* func);
+
+enum pool_command_op
+{
+  NOT_IN_USE_OP= 0, NORMAL_OP= 1, CONNECT_OP, KILL_OP, DIE_OP
+};
+
+#define HAVE_POOL_OF_THREADS 0                  /* For easyer tests */
+#define pool_of_threads_scheduler(A) one_thread_per_connection_scheduler(A)
+
+class thd_scheduler
+{};