• Ivan Trombley (46/46) Aug 12 2012 I'm stumped. Can anyone tell me why this won't compule using DMD
• Simen Kjaeraas (13/17) Aug 12 2012 The problems all have to do with one thing - shared class Data does
• Ivan Trombley (3/6) Aug 12 2012 Excellent, thanks. I assumed that since the class was marked as
• =?ISO-8859-1?Q?Jos=E9_Armando_Garc=EDa_Sancio?= (3/7) Aug 12 2012 Or
• Simen Kjaeraas (8/20) Aug 12 2012 On Sun, 12 Aug 2012 19:57:16 +0200, Jos=C3=A9 Armando Garc=C3=ADa Sancio...
• =?ISO-8859-1?Q?Jos=E9_Armando_Garc=EDa_Sancio?= (6/27) Aug 12 2012 Someone else may be better able to explain this but "most" D lex token

"Ivan Trombley" <itrombley dot-borg.org> writes:

I'm stumped. Can anyone tell me why this won't compule using DMD 
(v2.060)? It compiles and runs just fine using GDC:

import std.stdio;
import std.concurrency;

shared class Data
{
public:
   this(int count)
   {
     m_count = count;
   }

   int count() const
   {
     return m_count;
   }

private:
   int m_count = void;
}

int main()
{
   Tid tid = spawn(&threadFunc, thisTid);
   while (true)
   {
     auto data = receiveOnly!(Data);
     writefln("Count is %s.", data.count);

     if (data.count == 0)
       break;
   }

   return 0;
}

void threadFunc(Tid owner)
{
   for (int count = 10; count >= 0; --count)
   {
     auto data = new Data(count);
     send(owner, data);
   }
}


The errors I get from DMD are:

test.d(27): Error: function test.Data.count () shared const is 
not callable using argument types ()
test.d(29): Error: function test.Data.count () shared const is 
not callable using argument types ()
/usr/include/dmd/phobos/std/concurrency.d(467): Error: static 
assert  "Aliases to mutable thread-local data not allowed."
test.d(41):        instantiated from here: send!(Data)

"Simen Kjaeraas" <simen.kjaras gmail.com> writes:

On Sun, 12 Aug 2012 09:39:13 +0200, Ivan Trombley <itrombley dot-borg.org>  
wrote:

 I'm stumped. Can anyone tell me why this won't compule using DMD  
 (v2.060)? It compiles and runs just fine using GDC:

The problems all have to do with one thing - shared class Data does
not mean every instance of the class is shared, only that all member
functions are.

Hence,

      auto data = receiveOnly!(Data);

should be

auto data = receiveOnly!(shared Data);

and

      auto data = new Data(count);

should be

auto data = cast(shared)new Data(count);

-- 
Simen

"Ivan Trombley" <itrombley dot-borg.org> writes:

On Sunday, 12 August 2012 at 14:31:37 UTC, Simen Kjaeraas wrote:
 The problems all have to do with one thing - shared class Data 
 does not mean every instance of the class is shared, only that 
 all member functions are.

Excellent, thanks. I assumed that since the class was marked as 
shared then any instance of it would be as well.

=?ISO-8859-1?Q?Jos=E9_Armando_Garc=EDa_Sancio?= <jsancio gmail.com> writes:

On Sun, Aug 12, 2012 at 7:31 AM, Simen Kjaeraas <simen.kjaras gmail.com> wrote:
 On Sun, 12 Aug 2012 09:39:13 +0200, Ivan Trombley <itrombley dot-borg.org>
      auto data = new Data(count);


 should be

 auto data = cast(shared)new Data(count);

Or
auto data = new shared(Data)(count);

"Simen Kjaeraas" <simen.kjaras gmail.com> writes:

On Sun, 12 Aug 2012 19:57:16 +0200, Jos=C3=A9 Armando Garc=C3=ADa Sancio=
  =

<jsancio gmail.com> wrote:

 On Sun, Aug 12, 2012 at 7:31 AM, Simen Kjaeraas <simen.kjaras gmail.co=

m>  =

 wrote:
 On Sun, 12 Aug 2012 09:39:13 +0200, Ivan Trombley  =


 <itrombley dot-borg.org>
      auto data =3D new Data(count);


 should be

 auto data =3D cast(shared)new Data(count);

 Or
 auto data =3D new shared(Data)(count);

I thought I'd tried that. Maybe it was

auto data =3D new shared Data(count);

-- =

Simen

=?ISO-8859-1?Q?Jos=E9_Armando_Garc=EDa_Sancio?= <jsancio gmail.com> writes:

On Sun, Aug 12, 2012 at 1:18 PM, Simen Kjaeraas <simen.kjaras gmail.com> wr=
ote:
 On Sun, 12 Aug 2012 19:57:16 +0200, Jos=E9 Armando Garc=EDa Sancio
 <jsancio gmail.com> wrote:

 On Sun, Aug 12, 2012 at 7:31 AM, Simen Kjaeraas <simen.kjaras gmail.com>
 wrote:
 On Sun, 12 Aug 2012 09:39:13 +0200, Ivan Trombley
 <itrombley dot-borg.org>
      auto data =3D new Data(count);



 should be

 auto data =3D cast(shared)new Data(count);


 Or
 auto data =3D new shared(Data)(count);


 I thought I'd tried that. Maybe it was

 auto data =3D new shared Data(count);

Someone else may be better able to explain this but "most" D lex token
enclose until the end of the line unless de-marked with a pair of  ().
So I think 'new shared Data(count);' becomes 'new
shared(Data(count));'.