Hi, I tried running the code in gdb. I got the following: ---------- Program received signal SIGSEGV, Segmentation fault. 0xb75a6bca in memcpy () from /lib/tls/i686/cmov/libc.so.6 (gdb) backtrace #0 0xb75a6bca in memcpy () from /lib/tls/i686/cmov/libc.so.6 #1 0x0804f882 in TossimActiveMessageC$Model$receive (msg=0x80b15e0) at /opt/tinyos-2.1.1/tos/lib/tossim/TossimActiveMessageC.nc:105 #2 0x08052a30 in TossimPacketModelC$Packet$receive (msg=0x80b15e0) at /opt/tinyos-2.1.1/tos/lib/tossim/TossimPacketModel.nc:77 #3 0x08052a19 in TossimPacketModelC$GainRadioModel$receive (msg=0x80b15e0) at /opt/tinyos-2.1.1/tos/lib/tossim/TossimPacketModelC.nc:282 #4 0x080529d4 in CpmModelC$Model$receive (msg=0x80b15e0) at /opt/tinyos-2.1.1/tos/lib/tossim/GainRadioModel.nc:52 #5 0x08052738 in CpmModelC$sim_gain_receive_handle (evt=0x8bc3e50) at /opt/tinyos-2.1.1/tos/lib/tossim/CpmModelC.nc:322 #6 0x0804cd41 in sim_run_next_event () at /opt/tinyos-2.1.1/tos/lib/tossim/sim_tossim.c:135 #7 0x0804a5e7 in Tossim::runNextEvent (this=0x89d0008) at /opt/tinyos-2.1.1/tos/lib/tossim/tossim.c:278 #8 0x0804a466 in main (argc=2, argv=0xbf806054) at Driver.c:85
---------------- The prog seg-faults after a few exchange of messages between nodes. Apparently there is some problem is receiving messages (look at #1 above). Please help me locate the problem. -- Harshal > On Jun 29, 2010, at 7:25 AM, harsh...@cse.iitk.ac.in wrote: > >> Hi, >> I have been trying to run a clustering protocol in tinyos2. I have >> written >> some code for some part of the protocol. But whenever I run the code on >> TOSSIM, it runs for a few events and then a Segmentation fault is >> flagged >> and simulation stops abruptly. >> >> I tried removing the noise model part(i.e. commenting out the following >> in >> python script): >> ------code begins------ >> for i in range(0,numNodes): >> print "Creating noise model for ",i; >> t.getNode(i).createNoiseModel() >> ------code ends-------- >> then the code runs and terminates smoothly but it is of not much use as >> none of the sent messages are received. >> >> I really need to simulate the protocol. Any suggestions would be greatly >> appreciated. > > I'd suggest running it in gdb to find out what's causing the segfault. > Chances are you are not initializing the noise model correctly. Take a > look through the archives: similar problems come up occasionally. > > Phil > > > _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
