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WL#912 (more user control on relay logs):

Browse Source 
FLUSH LOGS now rotates relay logs,
and a new variable max_relay_log_size.
Plus a very small bit of code cleaning.


libmysqld/lib_sql.cc:
  open_log has no default arguments anymore.
mysql-test/r/rpl_flush_log_loop.result:
  result update now that FLUSH LOGS rotates relay logs.
mysql-test/r/rpl_log.result:
  result update now that FLUSH LOGS rotates relay logs.
mysql-test/r/rpl_rotate_logs.result:
  result update now that max_binlog_size is 4096.
mysql-test/t/rpl_rotate_logs-master.opt:
  now max_binlog_size must be a multiple of 4096 (see change in mysqld.cc)
sql/log.cc:
  Got rid of default arguments of various MYSQL_LOG methods (the default arguments
  made code reading uneasy).
  Set max_size in ::init().
  New function set_max_size() to set max_size of a MYSQL_LOG on-the-fly.
  More DBUG info.
sql/mysql_priv.h:
  no defaults in open_log().
  New variables max_relay_log_size.
sql/mysqld.cc:
  New variable and option max_relay_log_size.
  max_binlog_size and max_relay_log_size are multiples of IO_SIZE.
  No more default arguments for log functions.
sql/set_var.cc:
  New variable max_relay_log_size.
  If it is 0, then max_binlog_size will apply to relay logs.
  When one of these variables is changed, fix_max_%log_size is called
  to update max_size of the binary and/or relay logs.
sql/slave.cc:
  New function rotate_relay_log().
sql/slave.h:
  New function rotate_relay_log().
sql/sql_class.h:
  New member max_size of MYSQL_LOG (for automatic rotation).
  New method set_max_size() for setting on-the-fly.
sql/sql_parse.cc:
  Flush the relay log in FLUSH LOGS.
This commit is contained in:
unknown
2003-07-06 17:59:54 +02:00
parent e22a31f173
commit 27601fc5ee
15 changed files with 335 additions and 45 deletions
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18
sql/sql_class.h
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@@ -84,6 +84,17 @@ class MYSQL_LOG {
bool no_rotate;
bool need_start_event;
bool no_auto_events; // for relay binlog
/*
The max size before rotation (usable only if log_type == LOG_BIN: binary
logs and relay logs).
For a binlog, max_size should be max_binlog_size.
For a relay log, it should be max_relay_log_size if this is non-zero,
max_binlog_size otherwise.
max_size is set in init(), and dynamically changed (when one does SET
GLOBAL MAX_BINLOG_SIZE|MAX_RELAY_LOG_SIZE) by fix_max_binlog_size and
fix_max_relay_log_size).
*/
ulong max_size;
friend class Log_event;
public:
@@ -105,17 +116,18 @@ public:
bytes_written=0;
DBUG_VOID_RETURN;
}
void set_max_size(ulong max_size_arg);
void signal_update() { pthread_cond_broadcast(&update_cond);}
void wait_for_update(THD* thd);
void set_need_start_event() { need_start_event = 1; }
void init(enum_log_type log_type_arg,
enum cache_type io_cache_type_arg = WRITE_CACHE,
bool no_auto_events_arg = 0);
enum cache_type io_cache_type_arg,
bool no_auto_events_arg, ulong max_size);
void cleanup();
bool open(const char *log_name,enum_log_type log_type,
const char *new_name, const char *index_file_name_arg,
enum cache_type io_cache_type_arg,
bool no_auto_events_arg);
bool no_auto_events_arg, ulong max_size);
void new_file(bool need_lock= 1);
bool write(THD *thd, enum enum_server_command command,
const char *format,...);