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digitalmars.D.bugs - [Issue 2439] New: static ~this() cannot be used to shutdown threads

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=2439

           Summary: static ~this() cannot be used to shutdown threads
           Product: D
           Version: 2.020
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: ludwig informatik.uni-luebeck.de


In src/druntime/src/compiler/dmd/dmain2.d:301 thread_joinAll() is called before
_moduleDtor(). This makes it impossible to perform thread shutdown inside of a
module destructor because the thread_joinAll() call will wait indefinitely if
there are still threads waiting for a shutdown signal.

Moving thread_joinAll between _moduleDtor() and gc_term() should fix the issue.

(not sure if this should go here or into the trac issue tracker for
druntime...)


--
Nov 02 2008
parent reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=2439


sean invisibleduck.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WONTFIX





It's not unlikely that a thread may depend on static data, so by moving
thread_joinAll() until after the module dtors are called we would be pulling
the rug out from under these threads.  Instead, I suggest making threads that
interact with the module shutdown process into daemon threads by using the
"isDaemon" property.  These threads are ignored during thread_joinAll() and,
left alone, will run until the process ends.


--
Nov 02 2008
parent =?ISO-8859-15?Q?S=F6nke_Ludwig?= writes:
d-bugmail puremagic.com schrieb:

 http://d.puremagic.com/issues/show_bug.cgi?id=2439
 
 
 sean invisibleduck.org changed:
 
            What    |Removed                     |Added
 ----------------------------------------------------------------------------
              Status|NEW                         |RESOLVED
          Resolution|                            |WONTFIX
 
 
 
 

 It's not unlikely that a thread may depend on static data, so by moving
 thread_joinAll() until after the module dtors are called we would be pulling
 the rug out from under these threads.  Instead, I suggest making threads that
 interact with the module shutdown process into daemon threads by using the
 "isDaemon" property.  These threads are ignored during thread_joinAll() and,
 left alone, will run until the process ends.
 


Ah OK.. I didn't know about that property. That approach is definitly 
workable, albeit maybe a little non-obvious. THanks for the quick feedback.
Nov 03 2008