I am hitting the bug where Ant hangs when doing an <exec> - see bug:
https://issues.apache.org/bugzilla/show_bug.cgi?id=34461
I can't seem to get the workaround of using inputstring to work. I can
replicate this bug, even when using inputstring="", on both Ant 1.6.5
and Ant 1.7.1 - and I've seen this on both solaris and linux.
It's really simple to replicate - I'd appreciate it if someone can give
me an idiot lesson on what I'm doing wrong, or tell me if I should
submit another bug report on this.
1) Put the following three files in a directory (runjava.sh, build.xml
and Test.java - see below).
2) Compile Test.java via "javac Test.java".
3) Finally, just run "ant".
The ant script should complete very fast because runjava.sh puts the
Java VM in background via "&". However, ant just hangs and will only die
when the Java VM dies (which will be after a sleep of 60 seconds):
---runjava.sh---
java Test 60000 &
---build.xml---
<project name="test" default="do">
<target name="do">
<echo>Executing - this should go fast...</echo>
<exec dir="." inputstring="" executable="/bin/sh">
<arg line="runjava.sh"/>
</exec>
<echo>Execute finished.</echo>
</target>
</project>
---Test.java---
public class Test {
public static void main(String[] args) throws Exception {
System.out.println("Java: sleeping");
Thread.sleep(Long.parseLong(args[0]));
System.out.println("Java: done sleeping");
}
}
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