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Re: Interplatform (interprocess, interlanguage) communication

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On Sat, 04 Feb 2012 22:33:23 +0100, Jan Burse <janburse@fastmail.fm>
wrote, quoted or indirectly quoted someone who said :

>Obtain the lock:
>                 raf = new RandomAccessFile(file, "rw");
>
>                 fo = new FileOutputStream(raf.getFD());
>                 fo.getChannel().lock(0, Long.MAX_VALUE, false);
>
>Release the lock:
>                 fo.close();

 That is quite a bit of overhead. I would work fine for low traffic. I
was hoping for something that would let you leave the file open in
both jobs. e.g. a reserved block or blocks in the file that the
intercommunicators read and wrote to lock.  I suppose you could send
messages to a task that owned the file (a primitive database), but
then you might as well send messages directly to each other.

-- 
Roedy Green Canadian Mind Products
http://mindprod.com
One of the most useful comments you can put in a program is 
"If you change this, remember to change ?XXX? too".
 

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Re: Interplatform (interprocess, interlanguage) communication Roedy Green <see_website@mindprod.com.invalid> - 2012-02-04 12:50 -0800
  Re: Interplatform (interprocess, interlanguage) communication Roedy Green <see_website@mindprod.com.invalid> - 2012-02-04 13:22 -0800
    Re: Interplatform (interprocess, interlanguage) communication Jan Burse <janburse@fastmail.fm> - 2012-02-04 22:33 +0100
      Re: Interplatform (interprocess, interlanguage) communication Roedy Green <see_website@mindprod.com.invalid> - 2012-02-12 04:30 -0800
    Re: Interplatform (interprocess, interlanguage) communication Arne Vajhøj <arne@vajhoej.dk> - 2012-02-04 18:42 -0500
  Re: Interplatform (interprocess, interlanguage) communication Arne Vajhøj <arne@vajhoej.dk> - 2012-02-04 18:39 -0500

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