Cleanup MYSQL_LOG

Embed MYSQL_LOG::init().
Reduce visibility of MYSQL_LOG::init_and_set_log_file_name().
Cleanup unused mysql_bin_log_file_name() and mysql_bin_log_file_pos().

sql/log.cc

@@ -2590,24 +2590,14 @@ Please consider archiving some logs.", next, (MAX_LOG_UNIQUE_FN_EXT - next));
 }
 
 
-void MYSQL_LOG::init(enum_log_type log_type_arg,
-                     enum cache_type io_cache_type_arg)
-{
-  DBUG_ENTER("MYSQL_LOG::init");
-  log_type= log_type_arg;
-  io_cache_type= io_cache_type_arg;
-  DBUG_PRINT("info",("log_type: %d", log_type));
-  DBUG_VOID_RETURN;
-}
-
-
 bool MYSQL_LOG::init_and_set_log_file_name(const char *log_name,
                                            const char *new_name,
                                            ulong next_log_number,
                                            enum_log_type log_type_arg,
                                            enum cache_type io_cache_type_arg)
 {
-  init(log_type_arg, io_cache_type_arg);
+  log_type= log_type_arg;
+  io_cache_type= io_cache_type_arg;
 
   if (new_name)
   {
@@ -10438,24 +10428,6 @@ MYSQL_BIN_LOG::do_binlog_recovery(const char *opt_name, bool do_xa_recovery)
 
 
 #ifdef INNODB_COMPATIBILITY_HOOKS
-/**
-  Get the file name of the MySQL binlog.
-  @return the name of the binlog file
-*/
-extern "C"
-const char* mysql_bin_log_file_name(void)
-{
-  return mysql_bin_log.get_log_fname();
-}
-/**
-  Get the current position of the MySQL binlog.
-  @return byte offset from the beginning of the binlog
-*/
-extern "C"
-ulonglong mysql_bin_log_file_pos(void)
-{
-  return (ulonglong) mysql_bin_log.get_log_file()->pos_in_file;
-}
 /*
   Get the current position of the MySQL binlog for transaction currently being
   committed.

sql/log.h

@@ -305,13 +305,6 @@ class MYSQL_LOG
             enum_log_type log_type,
             const char *new_name, ulong next_file_number,
             enum cache_type io_cache_type_arg);
-  bool init_and_set_log_file_name(const char *log_name,
-                                  const char *new_name,
-                                  ulong next_log_number,
-                                  enum_log_type log_type_arg,
-                                  enum cache_type io_cache_type_arg);
-  void init(enum_log_type log_type_arg,
-            enum cache_type io_cache_type_arg);
   void close(uint exiting);
   inline bool is_open() { return log_state != LOG_CLOSED; }
   const char *generate_name(const char *log_name,
@@ -335,7 +328,12 @@ class MYSQL_LOG
   /** Instrumentation key to use for file io in @c log_file */
   PSI_file_key m_log_file_key;
 #endif
-  /* for documentation of mutexes held in various places in code */
+
+  bool init_and_set_log_file_name(const char *log_name,
+                                  const char *new_name,
+                                  ulong next_log_number,
+                                  enum_log_type log_type_arg,
+                                  enum cache_type io_cache_type_arg);
 };
 
 /* Tell the io thread if we can delay the master info sync. */
@@ -414,7 +412,6 @@ struct wait_for_commit;
 
 class MYSQL_BIN_LOG: public TC_LOG, private MYSQL_LOG
 {
- private:
 #ifdef HAVE_PSI_INTERFACE
   /** The instrumentation key to use for @ LOCK_index. */
   PSI_mutex_key m_key_LOCK_index;