flush

I have Perl script which appends a new line to the existing file every 3 seconds. Also, there is a C++ application which reads from that file. The problem is that the application begins to read the file after the script is done and file handle is closed. To avoid this I want to flush after each line append, but I'm new to Perl and don't know how to do that. paxdiablo Try: use IO::Handle; $fh->autoflush; This was actually posted as a way of auto-flushing in an early question of mine , which asked about the universally accepted bad way of achieving this :-) TL/DR: use IO::Handle and the flush

If FlushMode.AUTO is set, will Hibernate flush my updated persistent object when I call session.close()? I know that session.close() does not normally flush the session but I'm not sure how FlushMode.AUTO affects this. From the Docs: FlushMode.AUTO The Session is sometimes flushed before query execution in order to ensure that queries never return stale state. This is the default flush mode. Does this mean I can rely on Hibernate to verify my changes are flushed sometimes before my session is closed? Small code example: Session session = HibernateSessionFactory.getSession(); PersistedObject p

Here is my snippet I tested it in Chrome 11, and Firefox 4: var http = require('http'); http.createServer(function(request, response){ // Write Headers response.writeHead(200); // Write Hello World! response.write("Hello World!"); // End Response after 5 seconds setTimeout(function(){ response.end(); }, 5000); }).listen(8000); As you can see I timed out the response.end() so I can test if response.write is outputted before the response.end . In my experience though it is not. Is there a way to output the data before ending the response, something like sending the data in packets? If you change

I have a question in my mind that, while writing into the file, before closing is done, should we include flush()??. If so what it will do exactly? dont streams auto flush?? EDIT: So flush what it actually do? Writers and streams usually buffer some of your output data in memory and try to write it in bigger blocks at a time. flushing will cause an immediate write to disk from the buffer, so if the program crashes that data won't be lost. Of course there's no guarantee, as the disk may not physically write the data immediately, so it could still be lost. But then it wouldn't be the Java

Is it possible to echo each time the loop is executed? For example: foreach(range(1,9) as $n){ echo $n."\n"; sleep(1); } Instead of printing everything when the loop is finished, I'd like to see it printing each result per time. The easiest way to eliminate nginx's buffering is by emitting a header: header('X-Accel-Buffering: no'); This eliminates both proxy_buffering and (if you have nginx >= 1.5.6), fastcgi_buffering . The fastcgi bit is crucial if you're using php-fpm. The header is also far more convenient to do on an as-needed basis. Docs on X-Accel-Buffering Docs on fastcgi_buffering

Using PHP , I would like to make a while loop that reads a large file and sends the current line number when requested. Using Ajax , I'd like to get the current line count and print it out onto a page. Using html buttons , I'd like to be able to click and activate or terminate a javascript thread that runs only ONCE and calls the ajax method . I have given it a shot but for some reason, nothing prints unless I comment out the echo str_repeat(' ',1024*64); function and when it's commented out, it shows the entire loop result: 1 row(s) processed.2 row(s) processed.3 row(s) processed.4 row(s)