From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/mysql/service_rpl_transaction_write_set.h | 80 +++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 mysql/mysql/service_rpl_transaction_write_set.h

(limited to 'mysql/mysql/service_rpl_transaction_write_set.h')

diff --git a/mysql/mysql/service_rpl_transaction_write_set.h b/mysql/mysql/service_rpl_transaction_write_set.h
new file mode 100644
index 0000000..7f849c2
--- /dev/null
+++ b/mysql/mysql/service_rpl_transaction_write_set.h
@@ -0,0 +1,80 @@
+/* Copyright (c) 2014, 2016, 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 */
+
+#ifndef MYSQL_SERVICE_TRANSACTION_WRITE_SET_INCLUDED
+
+/**
+  @file include/mysql/service_rpl_transaction_write_set.h
+  This service provides a function for plugins to get the write set of a given
+  transaction.
+
+  SYNOPSIS
+  get_transaction_write_set()
+    This service is used to fetch the write_set extracted for the currently
+    executing transaction by passing the thread_id as an input parameter for
+    the method.
+
+    @param [in] - thread_id - It is the thread identifier of the currently
+                              executing thread.
+
+    In the current implementation it is being called during RUN_HOOK macro,
+    on which we know that thread is on plugin context.
+
+  Cleanup :
+    The service caller must take of the memory allocated during the service
+    call to prevent memory leaks.
+*/
+
+#ifndef MYSQL_ABI_CHECK
+#include <stdlib.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  This structure is used to keep the list of the hash values of the records
+  changed in the transaction.
+*/
+struct st_trans_write_set
+{
+  unsigned int m_flags; // reserved
+  unsigned long write_set_size; // Size of the PKE set of the transaction.
+  unsigned long long* write_set;  // A pointer to the PKE set.
+};
+typedef struct st_trans_write_set Transaction_write_set;
+
+extern struct transaction_write_set_service_st {
+  Transaction_write_set* (*get_transaction_write_set)(unsigned long m_thread_id);
+} *transaction_write_set_service;
+
+#ifdef MYSQL_DYNAMIC_PLUGIN
+
+#define get_transaction_write_set(m_thread_id) \
+  (transaction_write_set_service->get_transaction_write_set((m_thread_id)))
+
+#else
+
+Transaction_write_set* get_transaction_write_set(unsigned long m_thread_id);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#define MYSQL_SERVICE_TRANSACTION_WRITE_SET_INCLUDED
+#endif
-- 
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