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08c852026d
This patch is the result of running run-clang-tidy -fix -header-filter=.* -checks='-*,modernize-use-equals-default' . Code style changes have been done on top. The result of this change leads to the following improvements: 1. Binary size reduction. * For a -DBUILD_CONFIG=mysql_release build, the binary size is reduced by ~400kb. * A raw -DCMAKE_BUILD_TYPE=Release reduces the binary size by ~1.4kb. 2. Compiler can better understand the intent of the code, thus it leads to more optimization possibilities. Additionally it enabled detecting unused variables that had an empty default constructor but not marked so explicitly. Particular change required following this patch in sql/opt_range.cc result_keys, an unused template class Bitmap now correctly issues unused variable warnings. Setting Bitmap template class constructor to default allows the compiler to identify that there are no side-effects when instantiating the class. Previously the compiler could not issue the warning as it assumed Bitmap class (being a template) would not be performing a NO-OP for its default constructor. This prevented the "unused variable warning".
116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
/* Copyright (c) 2006 MySQL AB, 2009 Sun Microsystems, Inc.
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Use is subject to license terms.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef SEMISYNC_SLAVE_H
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#define SEMISYNC_SLAVE_H
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#include "semisync.h"
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#include "my_global.h"
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#include "sql_priv.h"
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#include "rpl_mi.h"
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#include "mysql.h"
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#include <sql_common.h>
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class Master_info;
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/**
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The extension class for the slave of semi-synchronous replication
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*/
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class Repl_semi_sync_slave
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:public Repl_semi_sync_base {
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public:
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Repl_semi_sync_slave() :m_slave_enabled(false) {}
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~Repl_semi_sync_slave() = default;
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void set_trace_level(unsigned long trace_level) {
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m_trace_level = trace_level;
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}
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/* Initialize this class after MySQL parameters are initialized. this
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* function should be called once at bootstrap time.
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*/
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int init_object();
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bool get_slave_enabled() {
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return m_slave_enabled;
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}
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void set_slave_enabled(bool enabled) {
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m_slave_enabled = enabled;
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}
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bool is_delay_master(){
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return m_delay_master;
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}
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void set_delay_master(bool enabled) {
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m_delay_master = enabled;
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}
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void set_kill_conn_timeout(unsigned int timeout) {
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m_kill_conn_timeout = timeout;
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}
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/* A slave reads the semi-sync packet header and separate the metadata
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* from the payload data.
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*
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* Input:
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* header - (IN) packet header pointer
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* total_len - (IN) total packet length: metadata + payload
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* semi_flags - (IN) store flags: SEMI_SYNC_SLAVE_DELAY_SYNC and
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SEMI_SYNC_NEED_ACK
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* payload - (IN) payload: the replication event
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* payload_len - (IN) payload length
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*
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* Return:
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* 0: success; non-zero: error
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*/
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int slave_read_sync_header(const char *header, unsigned long total_len,
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int *semi_flags,
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const char **payload, unsigned long *payload_len);
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/* A slave replies to the master indicating its replication process. It
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* indicates that the slave has received all events before the specified
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* binlog position.
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*/
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int slave_reply(Master_info* mi);
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int slave_start(Master_info *mi);
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int slave_stop(Master_info *mi);
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int request_transmit(Master_info*);
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void kill_connection(MYSQL *mysql);
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int reset_slave(Master_info *mi);
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private:
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/* True when init_object has been called */
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bool m_init_done;
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bool m_slave_enabled; /* semi-sycn is enabled on the slave */
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bool m_delay_master;
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unsigned int m_kill_conn_timeout;
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};
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/* System and status variables for the slave component */
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extern my_bool rpl_semi_sync_slave_enabled;
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extern my_bool rpl_semi_sync_slave_status;
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extern ulong rpl_semi_sync_slave_trace_level;
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extern Repl_semi_sync_slave repl_semisync_slave;
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extern char rpl_semi_sync_slave_delay_master;
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extern unsigned int rpl_semi_sync_slave_kill_conn_timeout;
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extern unsigned long long rpl_semi_sync_slave_send_ack;
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#endif /* SEMISYNC_SLAVE_H */
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