import std.concurrency;

import core.sync.mutex;

import core.thread;

import std.stdio;

​

__gshared Mutex a;

__gshared Mutex b;

​

shared static this()

{

    a = new Mutex;

    b = new Mutex;

}

​

void badThread()

{

    synchronized(a)

    {

        writeln("a is locked!");

        while(1) { Thread.sleep(1.seconds); }

    }

}

​

void main()

{

    spawn(&badThread);

    Thread.sleep(1.seconds);

    synchronized(a, b)

    {

        writeln("oops!");

    }

}