[M3devel] Calling RTHeapStats.ReportReachable(); with Pthread cvs head

[Tony Hosking]

Please try the latest CVS head.

On Oct 21, 2007, at 6:03 PM, Daniel Alejandro Benavides D. wrote:

> Hi:
> Im trying to execute the following program with the Pthread cvs  
> head implementation and I got this when executing the program:
>
> danielb at danielb-desktop:~/as207/code/m3gdb$ LINUXLIBC6/Main
> Entre dos enteros6 7
> Estadisticas del Heap
> HEAP: 0xb73d2000 .. 0xb7412000 => 0.2 Mbytes
>
>
> ***
> *** runtime error:
> ***    <*ASSERT*> failed.
> ***    file "../src/thread/PTHREAD/ThreadPThread.m3", line 992
> ***
>
> Aborted
> danielb at danielb-desktop:~/as207/code/m3gdb$
>
> The assert violated in m3core/thread/PTHREAD/ThreadPthread.m3 is this:
> PROCEDURE ProcessOther (act: Activation;  p: PROCEDURE (start,  
> stop: ADDRESS)) =
>   (* LL=activeMu *)
>   VAR
>     sp: ADDRESS;
>     state: RTMachine.ThreadState;
>   BEGIN
>     <*ASSERT act.state = ActState.Stopped*>
>
>
> The source code of the little program is this:
>
> MODULE Main;
>
> IMPORT SIO;
> IMPORT RTHeapStats;
> IMPORT RTutils;
> IMPORT RTHeapDebug;
> VAR
> varA, varB, varC: INTEGER;
>
>
> PROCEDURE multiplicar(a,b: INTEGER): INTEGER=
>         VAR
>           varC: INTEGER;
> BEGIN
>         varC:=a*b;
>         RETURN varC;
> END multiplicar;
>
>
> BEGIN
>
>         SIO.PutText("Entre dos enteros");
>         varA:=SIO.GetInt();
>         varB:=SIO.GetInt();
>         varC:=multiplicar(varA,varB);
>         SIO.PutText("Estadisticas del Heap");
>         RTHeapDebug.CheckHeap();
>    RTHeapStats.ReportReachable();
> (*      RTutils.Heap 
> (FALSE,RTutils.HeapPresentation.ByTypecode,TRUE,LAST(CARDINAL));*)
>         SIO.PutInt(varC);
>
> END Main.
>
> According to the draft book of Michael Dagenais Building  
> Distributed OO Applications:   Modula-3 Objects at Work,  
> RTHeapStats.ReportReachable()
> " ... is called to determine the number
> of active, reachable, objects (i.e. those which would not be
> garbage collected). Of the 1980 objects on the heap, only slightly  
> more than half are still alive."
>
> According to the interface documentation:
>  "reports the number of reachable objects and bytes from each  
> compilation unit, thread stack, and the individual roots that reach  
> the most bytes. The report is written to stderr. The Modula-3  
> process is frozen during the scanning and reporting."
>
> Obviously with the previous version of pthread the things were  
> working fine, also with user level implementation
>
> Thanks,
>
> Daniel Benavides
>
>
> Sé un Mejor Amante del Cine
> ¿Quieres saber cómo? ¡Deja que otras personas te ayuden! .