Using Inline::Java and the JVM everything is fine. If JNI is invoked
then it works, but on exit segfaults tyring to invalidate a non
existant pointer.
Anyone got a pointer to how to avoid/fix this?
[root@w32 JNI]# cat Hello.java JNICrash.pm jni.pl
public class Hello {
String Message;
public Hello(
String Message
) {
this.Message = Message;
}
public int speak() {
System.out.println( this.Message );
return 0;
}
}
package JNICrash;
use strict;
use warnings;
BEGIN {
$ENV{CLASSPATH} = '.';
$ENV{PERL_INLINE_JAVA_JNI} = 1;
sub CrashNBurn {
my ($msg) = @_;
use Inline (
Java => 'STUDY',
STUDY => [ 'Hello' ],
DEBUG => 1, #5,
DIRECTORY => '/tmp/',
PACKAGE => 'main',
);
my $java = new Hello( $msg );
$java->speak();
#undef $java;
}
1;
#!/bin/env perl
use strict;
use lib '.';
use JNICrash;
JNICrash::CrashNBurn( "Hello, world!" );
[download]
<http://perlmonks.org/?abspart=1;displaytype=displaycode;node_id=1094297;part=1>
Which runs fine when $ENV{PERL_INLINE_JAVA_JNI} = 0 but produces this when
PERL_INLINE_JAVA_JNI = 1
[root@w32 JNI]# ./jni.pl
[perl][1] validate done.
[perl][1] Starting load.
[perl][1] starting JVM...
[perl][1] JNI mode
[perl][1] using jdat cache
[perl][1] load done.
[java][1] loading InlineJavaUserClassLink via InlineJavaUserClassLoader
Hello, world!
[perl][1] killed by natural death.
[perl][1] JVM owner exiting...
[perl][1] exiting with 0
*** glibc detected *** perl: munmap_chunk(): invalid pointer: 0x00c0446c ***
======= Backtrace: =========
/lib/libc.so.6[0xa10e31]
perl(Perl_safesysfree+0x21)[0x80cde41]
perl(perl_destruct+0x200)[0x807a690]
perl(main+0xf3)[0x805fff3]
/lib/libc.so.6(__libc_start_main+0xe6)[0x9b6d26]
perl[0x805fe61]
======= Memory map: ========
[snip]
[download]
<http://perlmonks.org/?abspart=1;displaytype=displaycode;node_id=1094297;part=2>
This happens on CentOS 5 & 6 with versions of Perl 5.10, 5,12, 5,18. Inline
is 0.53
Dr James Freeman
