OK, Found what I was doing wrong. The format code for unsigned long long is "%llu". I had used "%d".
Stephen G. -----Original Message----- From: Mathieu Desnoyers [mailto:[email protected]] Sent: Monday, June 21, 2010 11:12 AM To: George Stephen-RVGG20 Cc: [email protected] Subject: Re: [ltt-dev] UST simple example not working * George Stephen-RVGG20 ([email protected]) wrote: > Hello, > > > > I tried this simple example for trace_marker and get incorrect values > for "return" in "ust.factorial" (return: 0). > > The trace for "ust.args" works. I even tried this in a C version of the > sample with same errors. > > Using g++ -o sample -g -lust sample.cpp; usttrace ./sample on a PowerPC > target. > > > > class Factorial1 : public Factorial > > { > > public: > > Factorial1(){} > > virtual ~Factorial1(){} > > unsigned long long do_factorial(unsigned long long n) > > { > > // user space trace instrumentation > > trace_mark(ust, args, "in_arg %d", n); > > if (n <= 1) > > return 1; > > else > > return n * > do_factorial(n-1); > > } > > }; > > > > class Factorial2 : public Factorial > > { > > public: > > Factorial2(){} > > virtual ~Factorial2(){} > > unsigned long long do_factorial(unsigned long long n) > > { > > unsigned long long ret = 1; > > for ( int i = 1; i <= n; i++){ > > ret *= i; > > } > > // user space trace instrumentation > > trace_mark(ust, factorial, "in_arg %d > return %d", n, ret); Do you really have a '\n' in your format string ? This might be causing your trouble. Mathieu > > return ret; > > } > > }; > > > > In another case I tried just: trace_mark(ust, factorial, "return %d", > ret) and the value for ret was the value for n. > > > > Thanks for the help, > > Stephen G. > > > > > > > > > > > > _______________________________________________ > ltt-dev mailing list > [email protected] > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev -- Mathieu Desnoyers Operating System Efficiency R&D Consultant EfficiOS Inc. http://www.efficios.com _______________________________________________ ltt-dev mailing list [email protected] http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
