Exclusive file lock

[Bruintje Beer]

Hi,

I was wondering if there is a way to open a data file in exclusive mode not
using the nio package. The reason for not using the nio package is not
relevant I am just interrested in some kind of solution.

John

 

[Hunter Gratzner]

I was wondering if there is a way to open a data file in exclusive mode not
using the nio package. The reason for not using the nio package is not
relevant

So you thing we are not worthy to know some background. But we should
be glad to be at your service.

Hint: Hire a consultant if you need to have someone you can push
around.

 

[Daniel Pitts]

Hi,

I was wondering if there is a way to open a data file in exclusive mode not
using the nio package. The reason for not using the nio package is not
relevant I am just interrested in some kind of solution.

John

Exclusive file locks are often OS specific, and as such difficult to
have a OS neutral implementation.

 

[Roedy Green]

I was wondering if there is a way to open a data file in exclusive mode not
using the nio package. The reason for not using the nio package is not
relevant I am just interrested in some kind of solution

Only some half-assed solutions.

see http://mindprod.com/jgloss/lockedfiles.html

 

[Arne Vajhøj]

I was wondering if there is a way to open a data file in exclusive mode not
using the nio package. The reason for not using the nio package is not
relevant I am just interrested in some kind of solution.

Write some C code and call it via JNI.

Arne

 

[Lew]

How come you don't want to use NIO?

Write some C code and call it via JNI.

Assuming an OS for which it's possible to take out such a lock on a file.

 

[EJP]

The reason for not using the nio package is not

relevant

Your reason for not using the only package that provides a solution is
*extremely* relevant.

You only have to use NIO for the lock, not for the I/O. Start with a
FileInputStream or RandomAccessFile, get the FileChannel from that, and
lock the file.