技術標籤：mysql 原始碼筆記mysql

//寫redo日誌，和 生成binlog的程式碼 
int handler::ha_write_row(uchar *buf)
{
  int error;
  Log_func *log_func= Write_rows_log_event::binlog_row_logging_function;
  DBUG_ASSERT(table_share->tmp_table != NO_TMP_TABLE ||
              m_lock_type == F_WRLCK);

  DBUG_ENTER("handler::ha_write_row"
 
);
  DBUG_EXECUTE_IF("inject_error_ha_write_row",
                  DBUG_RETURN(HA_ERR_INTERNAL_ERROR); );
  DBUG_EXECUTE_IF("simulate_storage_engine_out_of_memory",
                  DBUG_RETURN(HA_ERR_SE_OUT_OF_MEMORY); );
  MYSQL_INSERT_ROW_START(table_share->db.str, table_share->
 
table_name.str);
  mark_trx_read_write();

  DBUG_EXECUTE_IF("handler_crashed_table_on_usage",
                  my_error(HA_ERR_CRASHED, MYF(ME_ERRORLOG), table_share->table_name.str);
                  set_my_errno(HA_ERR_CRASHED);
                  DBUG_RETURN(HA_ERR_CRASHED););
  /*寫redo程式碼*/
 

  MYSQL_TABLE_IO_WAIT(PSI_TABLE_WRITE_ROW, MAX_KEY, error,
    { error= write_row(buf); })

  MYSQL_INSERT_ROW_DONE(error);
  if (unlikely(error))
    DBUG_RETURN(error);
  /*寫binlog程式碼 生成binlog的程式碼*/
  if (unlikely((error= binlog_log_row(table, 0, buf, log_func))))
    DBUG_RETURN(error); /* purecov: inspected */

  DEBUG_SYNC_C("ha_write_row_end");
  DBUG_RETURN(0);
}
/*寫binlog 去掉巨集的程式碼*/
{ if (m_psi !=  __null) { 
   switch (m_psi_batch_mode) { 
       case PSI_BATCH_MODE_NONE: { 
          PSI_table_locker *sub_locker= __null; 
          PSI_table_locker_state reentrant_safe_state; 
          sub_locker= pfs_start_table_io_wait_v1 (& reentrant_safe_state, m_psi, PSI_TABLE_WRITE_ROW, 64U );
          { error= write_row(buf); } 
          if (sub_locker !=__null) 
             pfs_end_table_io_wait_v1 (sub_locker, 1); 
             break; 
        } 
      case PSI_BATCH_MODE_STARTING: { 
           m_psi_locker= pfs_start_table_io_wait_v1 (& m_psi_locker_state, m_psi, PSI_TABLE_WRITE_ROW, 64U);
           { error= write_row(buf); } 
           if (!error) m_psi_numrows++; 
           m_psi_batch_mode= PSI_BATCH_MODE_STARTED; break; 
       } 
      case PSI_BATCH_MODE_STARTED: 
      default:
      { do { } while(0); { error= write_row(buf); } 
      if (!error) m_psi_numrows++; break; } 
   } 
 } else { 
     { error= write_row(buf); } 
 } 
}
//把內部形成的binlog 新增到thd
#0  MYSQL_BIN_LOG::flush_and_set_pending_rows_event (this=0x2d9af00 <mysql_bin_log>, thd=0x7ffe80000b70, event=0x0, is_transactional=true) at sql/binlog.cc:7379
#1  0x000000000181914e in THD::binlog_flush_pending_rows_event (this=0x7ffe80000b70, stmt_end=true, is_transactional=true) at sql/binlog.cc:11823
#2  0x00000000018198a1 in THD::binlog_query (this=0x7ffe80000b70, qtype=THD::ROW_QUERY_TYPE, query_arg=0x7ffe8000ef10 "insert into mytest04(msisdn,fav_brand,fav_big_type,fav_type,flag_code,fav_order,fav_period,free_value,start_time,end_time,group_id,free_value2,product_code,end_time2,marktmp,marktmp2,marktmp3)values(?"..., query_len=302, is_trans=true, direct=false, suppress_use=false,errcode=0) at sql/binlog.cc:12097
#3  0x000000000178a2ef in Sql_cmd_insert::mysql_insert (this=0x7ffe801bfb70, thd=0x7ffe80000b70, table_list=0x7ffe801be0d8) at sql/sql_insert.cc:859
#4  0x0000000001790862 in Sql_cmd_insert::execute (this=0x7ffe801bfb70, thd=0x7ffe80000b70) at sql/sql_insert.cc:3127
#5  0x000000000156d9db in mysql_execute_command (thd=0x7ffe80000b70, first_level=true) at sql/sql_parse.cc:3596
#6  0x00000000015a9fd4 in Prepared_statement::execute (this=0x7ffe80013030, expanded_query=0x7fffec4d9500, open_cursor=false) at sql/sql_prepare.cc:3977
#7  0x00000000015a8dfb in Prepared_statement::execute_loop (this=0x7ffe80013030, expanded_query=0x7fffec4d9500, open_cursor=false, packet=0x7ffe80ad3a3a "", packet_end=0x7ffe80ae029f "") at sql/sql_prepare.cc:3585
#8  0x00000000015a6784 in mysqld_stmt_execute (thd=0x7ffe80000b70, stmt_id=1, flags=0, params=0x7ffe80ad3a3a "", params_length=51301) at sql/sql_prepare.cc:2573
#9  0x00000000015686b6 in dispatch_command (thd=0x7ffe80000b70, com_data=0x7fffec4d9e10, command=COM_STMT_EXECUTE) at sql/sql_parse.cc:1418
#10 0x00000000015678a4 in do_command (thd=0x7ffe80000b70) at sql/sql_parse.cc:1025
#11 0x00000000016976a5 in handle_connection (arg=0xfd36080) at sql/conn_handler/connection_handler_per_thread.cc:306
#12 0x0000000001d3718a in pfs_spawn_thread (arg=0xfd34340) at storage/perfschema/pfs.cc:2190
#13 0x00007ffff7bc6e65 in start_thread () from /lib64/libpthread.so.0
#14 0x00007ffff660788d in clone () from /lib64/libc.so.6