Check your VM's documentation for any potential limitations on the
size of java.lang.String.
Note that you'll need at least twice as much storage, since while the
Java String is created you'll have to have both the native and Java
representations extant.
You might write up a simple test case which *only* allocates a large
native string and provides it to Java via JNA, and see at what size it
breaks (if at all). If you've done this, and it does not fail, then
your problem is probably not memory allocation, and you'll have to
examine what else your native code is doing and try to put that in the
standalone test.
On May 4, 2009, at 4:55 PM, <mark...@dlr.de> <mark...@dlr.de>
wrote:
We do nothing special. We have a special library to read and
manipulate xml files, written in C. These library has a extert-to-
string function. So, reading a 200MB xml file is no problem, but
when we try to export the contents to a java string, then the whole
jvm crashes.
Are there maybe any known limitations about this?
-----Ursprüngliche Nachricht-----
Von: Timothy Wall [mailto:twal...@dev.java.net]
Gesendet: Mo 30.03.2009 15:05
An: use...@jna.dev.java.net
Betreff: Re: [jna-users] Getting big string from c-library
You'll have to be a little more specific about what you're doing.
Reading a file into a Java String is not an atomic operation where a
single implementation is obvious to everyone.
There's no reason you can't allocate that much memory via JNA.
On Mar 30, 2009, at 8:53 AM, <mark...@dlr.de> <mark...@dlr.de>
wrote:
Hello,
we try to use a c-library in our java code, but when we try to get a
big
string from the c-library to a java string, then our java code
crashes
when importing more than 80 MB to a java string. But reading a simple
ascii file with 100 MB to a java string works fine and fast. Is
there a
limitation in JNA about this?
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