www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.bugs - [Issue 6116] New: May not join spawn()'ed threads

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6116

           Summary: May not join spawn()'ed threads
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: acehreli yahoo.com


--- Comment #0 from Ali Cehreli <acehreli yahoo.com> 2011-06-06 16:33:09 PDT ---
Version: 2.053

The command line:

~/dmd2.053/linux/bin64/dmd deneme.d  -ofdeneme  -unittest -J. -w  

Although I have multiple threads spawning each other here, I also had problems
with just a single thread spawned from main. I wanted to keep this example as
it exposes many different outputs for me.

import std.stdio;
import std.concurrency;
import core.thread;

void foo()
{
    foreach (i; 0 .. 5) {
        Thread.sleep(dur!"msecs"(500));
        writeln(i, " foo");
    }
}

void intermediate3()
{
    spawn(&foo);
    writeln("intermediate3 done");
}

void intermediate2()
{
    spawn(&intermediate3);
    writeln("intermediate2 done");
}

void intermediate()
{
    spawn(&intermediate2);
    writeln("intermediate done");
}

void main()
{
    spawn(&intermediate);
    writeln("main done");
}

1) ThreadException:

$ time ./deneme
main done
intermediate done
intermediate2 done
intermediate3 done
core.thread.ThreadException src/core/thread.d(866): Unable to join thread
----------------
----------------

real    0m0.003s
user    0m0.000s
sys    0m0.000s

2) No output from foo() (foo() is not joined)

$ time ./deneme
main done
intermediate done
intermediate2 done
intermediate3 done

real    0m0.003s
user    0m0.000s
sys    0m0.000s

3) Segmentation fault:

$ time ./deneme
main done
intermediate done
Segmentation fault

real    0m0.003s
user    0m0.000s
sys    0m0.000s

4) Expected behavior:

$ time ./deneme
main done
intermediate done
intermediate2 done
intermediate3 done
0 foo
1 foo
2 foo
3 foo
4 foo

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Jun 06 2011
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6116



--- Comment #1 from Ali Cehreli <acehreli yahoo.com> 2011-06-06 16:38:06 PDT ---
Apparently I clipped the timings for the last run. When it joins successfully,
the program takes long, seemingly waiting for the foo() thread:

$ time ./deneme
main done
intermediate done
intermediate2 done
intermediate3 done
0 foo
1 foo
2 foo
3 foo
4 foo

real    0m2.504s
user    0m0.000s
sys    0m0.000s

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Jun 06 2011
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6116


Sean Kelly <sean invisibleduck.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |sean invisibleduck.org


--- Comment #2 from Sean Kelly <sean invisibleduck.org> 2011-07-26 22:53:47 PDT
---
What's likely happening is that the app is terminating before the new threads
actually start, so they aren't marked isRunning when the wait loop occurs.  The
fix for this will likely be to add a status field where a thread may be marked
as ready, starting, running, and terminated.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Jul 26 2011
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6116


SomeDude <lovelydear mailmetrash.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lovelydear mailmetrash.com


--- Comment #3 from SomeDude <lovelydear mailmetrash.com> 2012-04-24 00:49:12
PDT ---
Run with 2.059 Win32:

PS E:\DigitalMars\dmd2\samples> rdmd bug
main done
intermediate done
intermediate2 done
intermediate3 done
0 foo
1 foo
2 foo
3 foo
4 foo
PS E:\DigitalMars\dmd2\samples>

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Apr 24 2012
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6116



--- Comment #4 from Ali Cehreli <acehreli yahoo.com> 2012-04-24 06:29:21 PDT ---
Same here: This bug seems to have been fixed by other changes.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Apr 24 2012
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6116


Alex Rønne Petersen <alex lycus.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
                 CC|                            |alex lycus.org
         Resolution|                            |FIXED


--- Comment #5 from Alex Rønne Petersen <alex lycus.org> 2012-10-19 09:31:01
CEST ---
Closing this then. Please reopen if the bug resurfaces.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Oct 19 2012