id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
8595	mapped_region::flush - invalid interpretation of async parameter (win32)	voropaev_sg@…	Ion Gaztañaga	"We had serious performance problem after transfer to boost version 1.53. The reason - bug in processing of ""async"" parameter of '''mapped_region::flush''' (windows version).
{{{
   else if(async && m_file_or_mapping_hnd != winapi::invalid_handle_value &&
           winapi::get_file_type(m_file_or_mapping_hnd) == winapi::file_type_disk)
  {
      return winapi::flush_file_buffers(m_file_or_mapping_hnd);
  }
}}}
So if '''async = true''' then '''flush''' function works in synchronous mode. I think the code must be:
 
{{{
else if(!async && ....

}}}

Sergey Voropaev "	Bugs	closed	To Be Determined	interprocess	Boost 1.53.0	Problem	fixed	flush async