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/* 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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