Hello.
I am having problems profiling an application and was
wondering if somebody there may help me.
I think the problem is that one of our libraries break
-pg instrumentation. I tried to make this post as
short as possible. Forgive me if I did'nt make it.
This library hide portabilities issues under a
portable interface, allowing us to run in console
mode, in daemon mode in unices or as a service in
windows. As you may guess, it is a complex library
that do a lot of things. I do not know which of these
are hurting -pg.
This pseudocode is a description of what I am doing.
void a() {}
void b() { for(int i=0; i < 10000; ++i) a(); }
void f() {}
void g() { for(int i=0; i < 10000; ++i) f(); }
class MyModule() ... {
public:
...
void operator()() {
...
// *2
for(int i=0; i < 10000; ++i) g();
return;
}
} myModule( .... );
int main() {
...
// *1
for(int i=0; i < 10000; ++i) b();
mylib::registerModule(myModule);
mylib::run(); // create a thread per module
...
}
The problem is that the profiling information contain
time information for b() and a() but no for g() and
f(). On the other hand the call count is the same.
--- gprof output ---
Flat profile:
Each sample counts as 0.01 seconds.
% self self total
time seconds calls ms/call ms/call name
50.00 0.22 10000 0.02 0.04 a()
29.55 0.13 100000000 0.00 0.00 b()
20.45 0.09 1 90.00 90.00 _static_init
0.00 0.00 100000000 0.00 0.00 f()
0.00 0.00 10000 0.00 0.00 g()
...
--- end of gprof output ---
Note: I already try making a sigprocmask, pthread_mask
to unblock SIGPROF in *1 and *2. I also verifíed that
the signal handler of SIGPROF is the same in *1 and
*2, it is a valid pointer, not SIG_DFL nor SIG_IGN.
If somebody can help will make me happy. Thanks.
------------------------------------------------------------
Juan Carlos Franzoy
Analista Programador
Tel: +54-11-4780-2634
mailto:JCFranzoy@xxxxxxxxxx
http://www.ats.com.ar
------------------------------------------------------------
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