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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /sql/semisync.h | |
parent | Initial commit. (diff) | |
download | mariadb-10.5-upstream.tar.xz mariadb-10.5-upstream.zip |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sql/semisync.h')
-rw-r--r-- | sql/semisync.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/sql/semisync.h b/sql/semisync.h new file mode 100644 index 00000000..44f23660 --- /dev/null +++ b/sql/semisync.h @@ -0,0 +1,73 @@ +/* Copyright (C) 2007 Google Inc. + Copyright (C) 2008 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ + + +#ifndef SEMISYNC_H +#define SEMISYNC_H + +#include "mysqld.h" +#include "log_event.h" +#include "replication.h" + +/** + This class is used to trace function calls and other process + information +*/ +class Trace { +public: + static const unsigned long k_trace_function; + static const unsigned long k_trace_general; + static const unsigned long k_trace_detail; + static const unsigned long k_trace_net_wait; + + unsigned long m_trace_level; /* the level for tracing */ + + Trace() + :m_trace_level(0L) + {} + Trace(unsigned long trace_level) + :m_trace_level(trace_level) + {} +}; + +/** + Base class for semi-sync master and slave classes +*/ +class Repl_semi_sync_base + :public Trace { +public: + static const unsigned char k_sync_header[2]; /* three byte packet header */ + + /* Constants in network packet header. */ + static const unsigned char k_packet_magic_num; + static const unsigned char k_packet_flag_sync; +}; + +/* The layout of a semisync slave reply packet: + 1 byte for the magic num + 8 bytes for the binlog positon + n bytes for the binlog filename, terminated with a '\0' +*/ +#define REPLY_MAGIC_NUM_LEN 1 +#define REPLY_BINLOG_POS_LEN 8 +#define REPLY_BINLOG_NAME_LEN (FN_REFLEN + 1) +#define REPLY_MAGIC_NUM_OFFSET 0 +#define REPLY_BINLOG_POS_OFFSET (REPLY_MAGIC_NUM_OFFSET + REPLY_MAGIC_NUM_LEN) +#define REPLY_BINLOG_NAME_OFFSET (REPLY_BINLOG_POS_OFFSET + REPLY_BINLOG_POS_LEN) +#define REPLY_MESSAGE_MAX_LENGTH \ + (REPLY_MAGIC_NUM_LEN + REPLY_BINLOG_POS_LEN + REPLY_BINLOG_NAME_LEN) + +#endif /* SEMISYNC_H */ |