[M3devel] problem using -DPTHREAD
Daniel Alejandro Benavides D.
dabenavidesd at yahoo.es
Tue Feb 6 00:45:53 CET 2007
Hello:
Finally I get mentor debugged with the below commands to avoid hit
'return' to continu the execution after Signals, (although the execution
still needs several hits on return, you can do several
previously and It helps to give continuity to the execution):
handle all nostop
handle EXC_SOFTWARE stop
handle EXC_BREAKPOINT stop
Here it is the out of m3gdb session of mentor (running PQueue session
Algorithm HeapSort, with Modula-3 Code View and Tree View):
Program received signal SIG64, Real-time event 64.
Program received signal SIGXCPU, CPU time limit exceeded.
Program received signal SIG64, Real-time event 64.
[Switching to Thread -1456178256 (LWP 23051)]
Breakpoint 1, InnerUnlockMutex (m=16_ac9568b4, self=16_ac92c004) at ThreadPThread.m3:168
warning: Source file is more recent than executable.
168 Die(ThisLine(), "attempt to release an unlocked mutex");
(m3gdb) where
#0 InnerUnlockMutex (m=16_ac9568b4, self=16_ac92c004) at ThreadPThread.m3:168
#1 0xb7113f69 in UnlockMutex (m=16_ac9568b4) at ThreadPThread.m3:189
#2 0xb7b27ff9 in SyncDefault (v=16_ac9568b4, ch=16_ac959268, wait=TRUE) at VBTClass.m3:799
#3 0xb7b21d9f in Sync (v=16_ac959268, wait=TRUE) at VBT.m3:1167
#4 0xb7b64371 in Sync (v=16_ac956744, ch=16_ac956820, wait=TRUE) at JoinedVBT.m3:101
#5 0xb7b27fd6 in SyncDefault (v=16_ac956820, ch=16_ac9567a4, wait=TRUE) at VBTClass.m3:797
#6 0xb7b27fd6 in SyncDefault (v=16_ac9567a4, ch=16_ac955ea4, wait=TRUE) at VBTClass.m3:797
#7 0xb7b27fd6 in SyncDefault (v=16_ac955ea4, ch=16_b2c5fcbc, wait=TRUE) at VBTClass.m3:797
#8 0xb7b27fd6 in SyncDefault (v=16_b2c5fcbc, ch=16_b2c5ff28, wait=TRUE) at VBTClass.m3:797
#9 0xb7b27fd6 in SyncDefault (v=16_b2c5ff28, ch=16_b2c5fdac, wait=TRUE) at VBTClass.m3:797
#10 0xb7b21d9f in Sync (v=16_b2c5fdac, wait=TRUE) at VBT.m3:1167
#11 0xb7d525f3 in MGRedisplay (v=16_b2c5fdac, br=RECORD r = RECORD west = 0; east = 0; north = 0; south = 0; END; p = NIL; END)
at MGV.m3:146
#12 0xb7d41b90 in DoAnimation (t=16_b2cac1ac, time=0.1202204, timePrev=0.117730595, v=16_b2c5fdac, mg=NIL) at Animate.m3:57
#13 0xb7d41ca8 in Do (t=16_b2cac1ac, mg=NIL, v=16_b2c5fdac, duration=1) at Animate.m3:74
#14 0xb7d536d1 in Animation (v=16_b2c5fdac, duration=1) at MGV.m3:313
#15 0xb7d83fdc in AnimateGraph (graph=16_b2c5fcbc, t0=0, t1=1) at GraphVBT.m3:656
#16 0x081534b3 in HeapOpInit (view=16_ac955ea4, k=4) at PQViews.m3:152
#17 0x0814c1d8 in OEDispatcher (v=16_ac955ea4, evt=16_b2be4f64) at PQueueIE.m3:97
#18 0xb7df19db in ViewThread (self=16_b2c3b808) at Zeus.m3:331
#19 0xb7116382 in RunThread (me=16_08307368) at ThreadPThread.m3:548
#20 0xb7115f61 in ThreadBase (param=16_08307368) at ThreadPThread.m3:518
#21 0xb6eb4341 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#22 0xb6e484ee in clone () from /lib/tls/i686/cmov/libc.so.6
(m3gdb)
Any more information useful to send you?
Thanks,
Daniel Benavides
On Feb 1, 2007, at 3:34 PM, Daniel Alejandro Benavides D. wrote:
> Hi:
>
> Some things besides what found with mentor:
>
> danielb at sl11:~$ mentor @M3stackdump
>
>
> ***
> *** runtime error:
> *** Thread client error: attempt to release an unlocked mutex
> *** file "ThreadPThread.m3", line 168
> ***
>
> ------------------ EXCEPTION HANDLER STACK ---------------------
> 0xa22bab80 LOCK mutex = 0xb241b164
> 0xa22babd0 LOCK mutex = 0xb2416c78
> 0xa22bac30 LOCK mutex = 0xb2416d54
> 0xa22bac80 LOCK mutex = 0xb2416cd8
> 0xa22bacd0 LOCK mutex = 0xb2410378
> 0xa22bad20 LOCK mutex = 0xb23fa104
> 0xa22bad70 LOCK mutex = 0xb23fa370
> 0xa22badc0 LOCK mutex = 0xb23fa1f4
> 0xa22bae20 LOCK mutex = 0xb23fa288
> 0xa22bae58 RAISES {}
> 0xa22bb170 TRY-EXCEPT {0x718ac4e9}
> 0xa22bb250 TRY-EXCEPT {0x718ac4e9}
> ----------------------------------------------------------------
> Cancelado
> danielb at sl11:~$
>
> I didn't debugged mentor, but I tried another program, cvsup,
> and with GUI problems after a seconds the process finishes
> but no advise of runtime error, however with no-gui It simply works
> well.
>
> Also Im trying the examples of the parallel chapter of the book
> "Programming in Modula-3" by Laszlo Boszormenyi & Carsten Weich,
> with the NThreads example (which you can download on the url
> http://web.archive.org/web/19970814162826/www.ifi.uni-klu.ac.at/
> Modula-3/m3book/examples.html )
> You will need the m3local library shipped and a m3makefile like
> this below:
> import ("m3local")
> implementation("NThreads")
> program("NThreads")
>
> I get this on the console with the Pthread version:
> the program will call Nl new line after a 10 is printed.
> 9 10
> 4 7 8 1 2 3 5 6 9 10
> 4 10
> 4 7 9 1 2 3 5 6 5 6 8 9 10
> 1 2 3 4 7 3 4 5 6 8 6 8 9 3 4 5 7 10
> 1 10
> 1 2 3 4 5 6 7 8 9 7 8 9 10
> 1 2 1 2 3 7 8 9 10
> 4 5 4 5 6 7 8 9 10
> 1 2 3 1 2 3 4 5 6 5 6 7 1 2 3 4 8 9 10
> 5 6 7 1 2 3 4 3 4 8 1 2 5 6 7 9 10
> 3 4 8 4 8 1 3 5 6 7 9 10
> 9 10
> 2 3 4 5 6 7 8 1 7 8 9 10
> 2 10
> 2 3 7 8 9 1 4 5 6 10
> 2 3 7 8 9 1 9 1 4 7 8 10
> 2 3 5 6 9 1 4 1 4 7 9 10
> 2 3 5 6 5 6 8 9 10
> 1 2 3 4 7 3 4 5 6 8 6 8 9 3 4 5 7 10
> 1 10
> 1 2 3 4 5 6 7 8 9 7 8 9 10
> 1 2 1 2 3 7 8 9 10
> 4 5 6 1 2 3 7 8 9 10
> 9 10
> 4 7 8 1 2 3 5 6 9 10
> 4 10
> 4 7 9 1 2 3 5 6 5 6 8 9 10
> 1 2 3 4 7 3 4 5 6 8 6 8 9 3 4 5 7 10
> 1 10
> 1 2 3 4 5 6 7 8 9 7 8 9 10
> 1 2 1 2 3 7 8 9 10
> 4 5 6 1 2 3 7 8 9 10
> 9 10
>
> But with the POSIX implementation, this is a extract of the out:
> It ends according to the example until Return is pressed.
>
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> 9 8 7 6 5 4 3 2 1 10
> Certainly, and according to the book, the first one is more
> expectable.
> I would like to know your opinions about this issue.
> Besides with import("libsio") in place of import ("m3local") on the
> m3makefile
> you get the numbers in a distribution similar to the above but the
> number of digits
> in each line is more uniform (ten by line) on the pthread version
> this time.
>
> Besides I know the Upthread.i3 interface on
> m3-libs/m3core/src/unix/linux-libc6 has a the procedure
>
> PROCEDURE attr_setschedparam (VAR attr: pthread_attr_t;
> READONLY param: struct_sched_param):
> int;
> that could be useful to change the scheduling policy, but certainly
> I didn't find with grep in all the cm3 distro where it is used.
> The Round Robin policy according to the documentation
> of pthreads, is only available on process running with superuser
> privileges.
>
> Thanks,
> Daniel Benavides
>
> > Tony Hosking hosking at cs.purdue.edu wrote:
> >
> > A stack trace would be useful. Perhaps you can run again with
> > @M3stackdump specified on the command line. Alternatively, if you
> > run inside gdb you can show the stack dump at the point of the
> > error
> > by setting a breakpoint at line 168 in ThreadPThread.m3.
> >
> > I notice that you are using priority scheduling -- not sure what
> > that
> > will do to things. Can you try it with round robin scheduling?
> >
> > On Jan 31, 2007, at 12:05 PM, Daniel Alejandro Benavides D. wrote:
> >
> > > Hello:
> > >
> > > I have compiled the cm3 cvs updated with the Pthread support
> > under
> > > kubuntu 6.06 Linux. I have done this adding the value "PTHREAD"
> > on
> > > the array SYSTEM_LIBORDER
> > >
> > > SYSTEM_LIBORDER = [ "OPENGL", "DECPEX", "MOTIF", "X11", "TCP",
> > "ODBC",> "POSTGRES95", "FLEX-BISON", "LEX-
> > YACC", "LIBC",
> > > "PTHREAD" ]
> > >
> > > and the variable "PTHREAD" : [ "-L/usr/lib", "-lpthread" ],
> > > on the array SYSTEM_LIBS
> > >
> > > But when running a mentor animation I get this runtime error
> > > consistently about a seconds later after began an animation, then
> >
> > > this is the out:
> > >
> > > root at sl11:/home/danielb/cm3-5.4-Rc2/cm3/scripts# mentor
showthread
> > >
> > >
> > > ***
> > > *** runtime error:
> > > *** Thread client error: attempt to release an unlocked mutex
> > > *** file "ThreadPThread.m3", line 168
> > > ***
> > >
> > > Cancelado
> > > root at sl11:/home/danielb/cm3-5.4-Rc2/cm3/scripts#
> > >
> > > This system has
> > > "POSIX version set to 200112,
> > > including support for priority scheduling"
> > >
> > > Thanks,
> > > Daniel Benavides
> > >
> >
---------------------------------
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