On Monday 15 June 2009, Evan wrote: > > It means that the debug reader in Valgrind was not able to detect > > a symbol name for a given instruction address, ie. debug info seems > > to be missing. This has nothing to do with missing command line > > options. Build your program with debug info. > > > > I should have said that I am building with debug info, and some names > come back hex while others do not. For instance: > ----------------------- > fn=orte_gpr_replica_init > 0 20 > > fn=0x0000000000005c60 > 0 6 > ----------------------- > > are listed alongside one another.
Any chance this is from a shared library without debug info? Then only function names can be detected which are exported symbols (ie. which can be called from the outside), internal ones would get you the hex number. > > Are you saying there are multiple such entries with the same function name? > > KCachegrind's behavior then would be to sum up the costs (according to > > the format definition). > > However, I can not think of a reason why Callgrind should print costs for > > the same function multiple times in one dump. Do you have an example > > when this happens? > > > Here's an example: > > This entry occurs: > > ----------------------- > fn=PMPI_Recv > 0 61074 > ----------------------- > > followed by this one: > ----------------------- > fn=PMPI_Recv > 0 9477 Not sure about this one. Theoretically, the same symbol could appear in multiple shared libs (and linker does not complain because of a weak symbol?). Running with "--dump-instr=yes" should print the instruction offsets for above output. Can you check this out? Josef ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
