40 static int _mi_find_writepos(MI_INFO *info,ulong reclength,my_off_t *filepos,
42 static int update_dynamic_record(MI_INFO *info,my_off_t filepos,uchar *record,
44 static int delete_dynamic_record(MI_INFO *info,my_off_t filepos,
46 static int _mi_cmp_buffer(File file, const uchar *buff, my_off_t filepos,
346   my_off_t filepos;  in write_dynamic_record()  local
375     if (_mi_find_writepos(info,reclength,&filepos,&length))  in write_dynamic_record()
377     if (_mi_write_part_record(info,filepos,length,  in write_dynamic_record()
394 			     my_off_t *filepos, /* Return file pos */  in _mi_find_writepos()  argument
405     *filepos=info->s->state.dellink;  in _mi_find_writepos()
423     *filepos=info->state->data_file_length;  in _mi_find_writepos()
457   if (block_info->filepos == info->s->state.dellink)  in unlink_deleted_block()
497   if (info->nextpos == block_info->filepos)  in unlink_deleted_block()
519 				       my_off_t filepos)  in update_backward_delete_link()  argument
531       mi_sizestore(buff,filepos);  in update_backward_delete_link()
547 static int delete_dynamic_record(MI_INFO *info, my_off_t filepos,  in delete_dynamic_record()  argument
557   error= update_backward_delete_link(info, info->s->state.dellink, filepos);  in delete_dynamic_record()
563     if ((b_type=_mi_get_block_info(&block_info,info->dfile,filepos))  in delete_dynamic_record()
566 	(length=(uint) (block_info.filepos-filepos) +block_info.block_len) <  in delete_dynamic_record()
575     if (_mi_get_block_info(&del_block,info->dfile,filepos+length) &  in delete_dynamic_record()
590     if (info->s->file_write(info,(uchar*) block_info.header,20,filepos,  in delete_dynamic_record()
593     info->s->state.dellink = filepos;  in delete_dynamic_record()
596     filepos=block_info.next_filepos;  in delete_dynamic_record()
610 			  my_off_t filepos,	/* points at empty block */  in _mi_write_part_record()  argument
728     my_off_t next_block=filepos+length+extra_length+res_length;  in _mi_write_part_record()
751     info->s->state.dellink= filepos+length+extra_length;  in _mi_write_part_record()
763 			 length+extra_length+del_length,filepos))  in _mi_write_part_record()
774 		  del_length,filepos,info->s->write_flag))  in _mi_write_part_record()
799 static int update_dynamic_record(MI_INFO *info, my_off_t filepos, uchar *record,  in update_dynamic_record()  argument
829     if ((error=_mi_get_block_info(&block_info,info->dfile,filepos))  in update_dynamic_record()
856     if (filepos != info->s->state.dellink)  in update_dynamic_record()
859       if ((error=_mi_get_block_info(&block_info,info->dfile,filepos))  in update_dynamic_record()
868       length=(ulong) (block_info.filepos-filepos) + block_info.block_len;  in update_dynamic_record()
876 	if (block_info.filepos + block_info.block_len ==  in update_dynamic_record()
901 				 block_info.filepos + block_info.block_len) &  in update_dynamic_record()
917 	      next_pos= del_block.filepos+ del_block.block_len - rest_length;  in update_dynamic_record()
943       if (_mi_find_writepos(info,reclength,&filepos,&length))  in update_dynamic_record()
946     if (_mi_write_part_record(info,filepos,length,block_info.next_filepos,  in update_dynamic_record()
949     if ((filepos=block_info.next_filepos) == HA_OFFSET_ERROR)  in update_dynamic_record()
952       filepos=info->s->state.dellink;  in update_dynamic_record()
1448 int _mi_read_dynamic_record(MI_INFO *info, my_off_t filepos, uchar *buf)  in _mi_read_dynamic_record()  argument
1457   if (filepos != HA_OFFSET_ERROR)  in _mi_read_dynamic_record()
1465       if (filepos == HA_OFFSET_ERROR)  in _mi_read_dynamic_record()
1468 	  info->rec_cache.pos_in_file < filepos + MI_BLOCK_INFO_HEADER_LENGTH &&  in _mi_read_dynamic_record()
1472       if ((b_type= _mi_get_block_info(&block_info, file, filepos))  in _mi_read_dynamic_record()
1498         uint offset= (uint) (block_info.filepos - filepos);  in _mi_read_dynamic_record()
1500         filepos+= sizeof(block_info.header);  in _mi_read_dynamic_record()
1516             info->rec_cache.pos_in_file < filepos + block_info.data_len &&  in _mi_read_dynamic_record()
1525                                filepos, MYF(MY_NABP)))  in _mi_read_dynamic_record()
1530       filepos= block_info.next_filepos;  in _mi_read_dynamic_record()
1582   my_off_t filepos;  in _mi_cmp_dynamic_record()  local
1609     filepos=info->lastpos;  in _mi_cmp_dynamic_record()
1611     block_info.next_filepos=filepos;  in _mi_cmp_dynamic_record()
1637       if (_mi_cmp_buffer(info->dfile,record,block_info.filepos,  in _mi_cmp_dynamic_record()
1657 static int _mi_cmp_buffer(File file, const uchar *buff, my_off_t filepos,  in _mi_cmp_buffer()  argument
1664   next_length= IO_SIZE*2 - (uint) (filepos & (IO_SIZE-1));  in _mi_cmp_buffer()
1668     if (mysql_file_pread(file, temp_buff, next_length, filepos, MYF(MY_NABP)) ||  in _mi_cmp_buffer()
1671     filepos+=next_length;  in _mi_cmp_buffer()
1676   if (mysql_file_pread(file, temp_buff, length, filepos, MYF(MY_NABP)))  in _mi_cmp_buffer()
1719 				my_off_t filepos,  in _mi_read_rnd_dynamic_record()  argument
1731                    if (filepos)  in _mi_read_rnd_dynamic_record()
1758     if (filepos >= info->state->data_file_length)  in _mi_read_rnd_dynamic_record()
1767       if (filepos >= info->state->data_file_length)  in _mi_read_rnd_dynamic_record()
1775       if (_mi_read_cache(&info->rec_cache,(uchar*) block_info.header,filepos,  in _mi_read_rnd_dynamic_record()
1780       b_type=_mi_get_block_info(&block_info,-1,filepos);  in _mi_read_rnd_dynamic_record()
1785 	  info->rec_cache.pos_in_file < filepos + MI_BLOCK_INFO_HEADER_LENGTH &&  in _mi_read_rnd_dynamic_record()
1789       b_type=_mi_get_block_info(&block_info,info->dfile,filepos);  in _mi_read_rnd_dynamic_record()
1798 	filepos=block_info.filepos+block_info.block_len;  in _mi_read_rnd_dynamic_record()
1813 	info->lastpos=block_info.filepos;  in _mi_read_rnd_dynamic_record()
1814 	info->nextpos=block_info.filepos+block_info.block_len;  in _mi_read_rnd_dynamic_record()
1822       info->lastpos=filepos;  in _mi_read_rnd_dynamic_record()
1838       uint offset=(uint) (block_info.filepos - filepos);  in _mi_read_rnd_dynamic_record()
1840       filepos=block_info.filepos;  in _mi_read_rnd_dynamic_record()
1850 	filepos+=tmp_length;  in _mi_read_rnd_dynamic_record()
1858 	if (_mi_read_cache(&info->rec_cache,(uchar*) to,filepos,  in _mi_read_rnd_dynamic_record()
1868             block_info.filepos + block_info.data_len &&  in _mi_read_rnd_dynamic_record()
1887       info->nextpos= block_info.filepos + block_info.block_len;  in _mi_read_rnd_dynamic_record()
1892     filepos=block_info.next_filepos;  in _mi_read_rnd_dynamic_record()
1913 uint _mi_get_block_info(MI_BLOCK_INFO *info, File file, my_off_t filepos)  in _mi_get_block_info()  argument
1925     mysql_file_seek(file, filepos, MY_SEEK_SET, MYF(0));  in _mi_get_block_info()
1949     info->filepos=filepos;  in _mi_get_block_info()
1965     info->filepos=filepos+3;  in _mi_get_block_info()
1969     info->filepos=filepos+4;  in _mi_get_block_info()
1977     info->filepos=filepos+16;  in _mi_get_block_info()
1983     info->filepos=filepos+4;  in _mi_get_block_info()
1988     info->filepos=filepos+5;  in _mi_get_block_info()
1996     info->filepos=filepos+13;  in _mi_get_block_info()
2003     info->filepos=filepos+15;  in _mi_get_block_info()
2009     info->filepos=filepos+3;  in _mi_get_block_info()
2013     info->filepos=filepos+4;  in _mi_get_block_info()
2019     info->filepos=filepos+4;  in _mi_get_block_info()
2024     info->filepos=filepos+5;  in _mi_get_block_info()
2031     info->filepos=filepos+11;  in _mi_get_block_info()
2037     info->filepos=filepos+12;  in _mi_get_block_info()