[Php-java-bridge-users] RE: gcj problem

[<php...@li...>]

> Hi,
> [please excuse the delay]
> 
> I have just checked a fix into the head of the CVS.
> Please use this until the next version 1.0.6 is available.
> 
> I have tested your program against the CVS head:
> gcj: 3.2.3
> php: 4.3.4
> 
> gcj -fjni -oJavaBridge.srv \
> --main=JavaBridge \
> php-java-bridge-1.0.5/modules/JavaBridge.class \
> test/gcjtest.java \
> -L`pwd`/php-java-bridge-1.0.5/modules -lnatcJavaBridge
> 
> su -c "killall -9 java; rm /tmp/.php-java-bridge"
> 
> export LD_LIBRARY_PATH=`pwd`/php-java-bridge-1.0.5/modules
> 
> ./JavaBridge.srv /tmp/.php-java-bridge 1 "" &
> php test/gcjtest.php
> 
> ==> 48890


yes.. the my original code used a lots of space chars as padding.. but
sourceforge's forum engine shrank it to just one space.. thats why the
output length is different... the original class was:

public class Test {

	public String test () {
		StringBuffer sb = new StringBuffer ();

		for (int i=0;i<10000;i++) {
			sb.append (i);
			sb.append ("                     ");
		}
		return sb.toString ();
	}

}



so Test.test() outputs 248890 bytes.

I just checkout the cvs and tried and the same problem comes up again.

now the pattern is a little different though.. the php script runs fine
for like 15 times.. then the same exception comes up in JavaBridge.svr
console.. and the php output is this:

      Warning: java.lang.StringIndexOutOfBoundsException in
/home/www/test.php on line 31

then I can just run the script again and it will work.. for 2 or 3
times.. then the exception and the warning come up again.. and this
pattern is repeated as many time I try the thing.


I compiled with -g so the exception is a bit more verbose:

java.lang.StringIndexOutOfBoundsException
   at java.lang.String.charAt(int) (/usr/lib/libgcj.so.4.0.0)
   at gnu.gcj.convert.Output_8859_1.write(java.lang.String, int, int,
char[]) (/usr/lib/libgcj.so.4.0.0)
   at java.lang.String.getBytes(java.lang.String)
(/usr/lib/libgcj.so.4.0.0)
   at java.lang.String.getBytes() (/usr/lib/libgcj.so.4.0.0)
   at JavaBridge.setResult(long, long, java.lang.Object)
(/home/Downloads/php-java-bridge/cvs/php-java-bridge/server/JavaBridge.java:114)
   at JavaBridge.Invoke(java.lang.Object, java.lang.String,
java.lang.Object[], long, long)
(/home/Downloads/php-java-bridge/cvs/php-java-bridge/server/JavaBridge.java:409)
   at _Jv_CallAnyMethodA(java.lang.Object, java.lang.Class, _Jv_Method,
boolean, java.lang.Class[], jvalue, jvalue) (/usr/lib/libgcj.so.4.0.0)
   at __clone (/lib/tls/libc-2.3.3.so)






> Additional notes regarding gcj:
> 
> 1. GCJ cannot currently handle multiple threads accessing the library
> via JNI (CNI might work, not tested). So until this gcj bug is fixed,
> please start the bridge via dl() and do *not* hard-code the socketname
> option. This starts a new server process for each incoming request.

... what this mean exactly? ... apache is multithreaded.. and thus I can
have two php scripts running in different threads and being called at
the same time.. so they cannot access the same class.method? or cannot
use the php-java-bridge lib at once at all?