[HARMONY-1722] notify() in synchronized section makes wait(long) wait forever

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: DRLVM
• Environment: Windows XP IA32
• Estimated Complexity: Unknown
• Assignee: Alexey Petrenko
• Reporter: Anton Luht
• Created: 05/Oct/06 11:53
• Updated: 06/Nov/06 08:58
• Resolved: 06/Nov/06 08:58

Description

DRLVM svn = r453182, (Oct 5 2006), Windows/ia32/msvc 1310, debug build
with jit and interpreter (-Xint)

The following test:

public class Test {
public static void main(String args[]) throws Exception {
new Thread() {
public void run() {
while (true) {
System.err.println("entering cycle");
synchronized (this) {
try

{ System.err.println("before wait"); wait(50); System.err.println("after wait"); notify(); }

catch (InterruptedException e)

{ e.printStackTrace(); }

}
System.err.println("after cycle");
}
}
}.start();
}

}

Prints in RI:

entering cycle
before wait
after wait
after cycle
entering cycle
before wait
after wait
after cycle

endlessly

in DRL:

entering cycle
before wait
after wait
after cycle
entering cycle
before wait
<test hangs>

If we remove notify() from loop, the loop will become infinite

Issue Links

• blocks: HARMONY-1679 Timer.schedule(TimerTask, delay, period) doesn't cause repetitive invocation of task