/**
 * Testing.
 */
module Test;

import std.thread;
import std.stdio;

class DerivedThread : Thread {

     this() {
         super(&run);
     }

private :
     int run() {
        writefln("Derived thread running.\n" );
	return 0;
     }
}

void main() {
	Thread derived = new DerivedThread();
	derived.start();
}

This code makes no output. Why?

DF wrote:
> /**
>  * Testing.
>  */
> module Test;
> 
> import std.thread;
> import std.stdio;
> 
> class DerivedThread : Thread {
> 
>      this() {
>          super(&run);
>      }
> 
> private :
>      int run() {
>         writefln("Derived thread running.\n" );
> 	return 0;
>      }
> }
> 
> void main() {
> 	Thread derived = new DerivedThread();
> 	derived.start();
> }
> 
> This code makes no output. Why?

Not quite sure, but you could try derived.wait() in main to wait for the thread to finish.

On Wed, 19 Nov 2008 13:26:32 -0500, DF <deefriend@ymail.com> wrote:

> void main() {
> 	Thread derived = new DerivedThread();
> 	derived.start();
> }

The main thread is exiting before the derived thread runs. This works correctly:
	Thread derived = new DerivedThread();
	derived.start();
	derived.wait;

Spacen Jasset Wrote:

> DF wrote:
> > /**
> >  * Testing.
> >  */
> > module Test;
> > 
> > import std.thread;
> > import std.stdio;
> > 
> > class DerivedThread : Thread {
> > 
> >      this() {
> >          super(&run);
> >      }
> > 
> > private :
> >      int run() {
> >         writefln("Derived thread running.\n" );
> > 	return 0;
> >      }
> > }
> > 
> > void main() {
> > 	Thread derived = new DerivedThread();
> > 	derived.start();
> > }
> > 
> > This code makes no output. Why?
> 
> Not quite sure, but you could try derived.wait() in main to wait for the thread to finish.
It won't help. And method wait() is hidden. I'm using D 2.0.

Robert Jacques Wrote:

> On Wed, 19 Nov 2008 13:26:32 -0500, DF <deefriend@ymail.com> wrote:
> 
> > void main() {
> > 	Thread derived = new DerivedThread();
> > 	derived.start();
> > }
> 
> The main thread is exiting before the derived thread runs. This works
> correctly:
> 	Thread derived = new DerivedThread();
> 	derived.start();
> 	derived.wait;

You'll get "Error: hidden method called for Test.DerivedThread" if try to use derived.wait.

DF Wrote:

> /**
>  * Testing.
>  */
> module Test;
> 
> import std.thread;
> import std.stdio;
> 
> class DerivedThread : Thread {
> 
>      this() {
>          super(&run);
>      }
> 
> private :
>      int run() {
>         writefln("Derived thread running.\n" );
> 	return 0;
>      }
> }
> 
> void main() {
> 	Thread derived = new DerivedThread();
> 	derived.start();
> }
> 
> This code makes no output. Why?

The code above should be changed to:
/**
* Testing.
*/
module Test;

import std.thread;
import std.stdio;

class DerivedThread : Thread {

     this() {
         super(&run);
     }


     int run() {
        writefln("Derived thread running.\n" );
        return 0;
     }
}

void main() {
        Thread derived = new DerivedThread();
        derived.start();
        derived.wait();
}

Now it works thanks.

On Wed, 19 Nov 2008 13:33:26 -0500, DF <deefriend@ymail.com> wrote:

> Robert Jacques Wrote:
>
>> On Wed, 19 Nov 2008 13:26:32 -0500, DF <deefriend@ymail.com> wrote:
>>
>> > void main() {
>> > 	Thread derived = new DerivedThread();
>> > 	derived.start();
>> > }
>>
>> The main thread is exiting before the derived thread runs. This works
>> correctly:
>> 	Thread derived = new DerivedThread();
>> 	derived.start();
>> 	derived.wait;
>
> You'll get "Error: hidden method called for Test.DerivedThread" if try to use derived.wait.

This worked on my setup (D 1.035 + Phobos + Windows + Release), which version are you using?

DF Wrote:

> DF Wrote:
> 
> > /**
> >  * Testing.
> >  */
> > module Test;
> > 
> > import std.thread;
> > import std.stdio;
> > 
> > class DerivedThread : Thread {
> > 
> >      this() {
> >          super(&run);
> >      }
> > 
> > private :
> >      int run() {
> >         writefln("Derived thread running.\n" );
> > 	return 0;
> >      }
> > }
> > 
> > void main() {
> > 	Thread derived = new DerivedThread();
> > 	derived.start();
> > }
> > 
> > This code makes no output. Why?
> 
> The code above should be changed to:
> /**
> * Testing.
> */
> module Test;
> 
> import std.thread;
> import std.stdio;
> 
> class DerivedThread : Thread {
> 
>      this() {
>          super(&run);
>      }
> 
> 
>      int run() {
>         writefln("Derived thread running.\n" );
>         return 0;
>      }
> }
> 
> void main() {
>         Thread derived = new DerivedThread();
>         derived.start();
>         derived.wait();
> }
> 
> Now it works thanks.

P.S. I'm using Digital Mars D Compiler v2.014

DF wrote:
> Spacen Jasset Wrote:
> 
>> DF wrote:
>>> /**
>>>  * Testing.
>>>  */
>>> module Test;
>>>
>>> import std.thread;
>>> import std.stdio;
>>>
>>> class DerivedThread : Thread {
>>>
>>>      this() {
>>>          super(&run);
>>>      }
>>>
>>> private :
>>>      int run() {
>>>         writefln("Derived thread running.\n" );
>>> 	return 0;
>>>      }
>>> }
>>>
>>> void main() {
>>> 	Thread derived = new DerivedThread();
>>> 	derived.start();
>>> }
>>>
>>> This code makes no output. Why?
>> Not quite sure, but you could try derived.wait() in main to wait for the thread to finish.
> It won't help. And method wait() is hidden. I'm using D 2.0.

If you're using D 2.0 then that shouldn't even compile.  In fact, std.thread doesn't exist any longer.  Try:

module Test;

import core.thread;
import std.stdio;

class DerivedThread : Thread {
    this() {
        super(&run);
    }

private:
    void run() {
        writefln( "Derived thread running." );
    }
}

void main() {
    Thread derived = new DerivedThread();
    derived.start();
}

Note that if you set "Thread.isDaemon = true" then you will need to join() the thread to wait for it to complete before the app exits.


Sean

Sean Kelly Wrote:

> DF wrote:
> > Spacen Jasset Wrote:
> > 
> >> DF wrote:
> >>> /**
> >>>  * Testing.
> >>>  */
> >>> module Test;
> >>>
> >>> import std.thread;
> >>> import std.stdio;
> >>>
> >>> class DerivedThread : Thread {
> >>>
> >>>      this() {
> >>>          super(&run);
> >>>      }
> >>>
> >>> private :
> >>>      int run() {
> >>>         writefln("Derived thread running.\n" );
> >>> 	return 0;
> >>>      }
> >>> }
> >>>
> >>> void main() {
> >>> 	Thread derived = new DerivedThread();
> >>> 	derived.start();
> >>> }
> >>>
> >>> This code makes no output. Why?
> >> Not quite sure, but you could try derived.wait() in main to wait for the thread to finish.
> > It won't help. And method wait() is hidden. I'm using D 2.0.
> 
> If you're using D 2.0 then that shouldn't even compile.  In fact, std.thread doesn't exist any longer.  Try:
> 
> module Test;
> 
> import core.thread;
> import std.stdio;
> 
> class DerivedThread : Thread {
>      this() {
>          super(&run);
>      }
> 
> private:
>      void run() {
>          writefln( "Derived thread running." );
>      }
> }
> 
> void main() {
>      Thread derived = new DerivedThread();
>      derived.start();
> }
> 
> Note that if you set "Thread.isDaemon = true" then you will need to join() the thread to wait for it to complete before the app exits.
> 
> 
> Sean

That's what I get when I try to compile the code you've posted.

module thread cannot read file 'core\thread.d'