Hello, perf hackers :-)
I'm beginner in perf.
I'm analysing the sequence of function call and how it was written to
update 'report' of gtk view.
This is a thread of a command 'perf report --gtk'
1. run_argv()
(in main of perf.c:534)
2. handle_internal_command()
(in run_argv of perf.c:420 )
So far, I've thought this process is to filter what command and option is
3. cmd_report()
(in run_builtin of perf.c:319) by function pointer
4. setup_browser()
(in cmd_report of builtin-report.c:750)
5. setup_gtk_browser()
(in setup_browser of ui/setup.c:74)
6. perf_gtk__init()
(in setup_gtk_browser of ui/setup.c:32)
about number 6, I have a question.
In setup_gtk_browser of ui/setup.c: 28 ~ 32,
28 perf_ui_init = dlsym(perf_gtk_handle, "perf_gtk__init");
29 if (perf_ui_init == NULL)
30 goto out_close;
31
32 if (perf_ui_init() == 0)
33 return 0;
34
Why not call directly 'perf_gtk__init()' ?
Why call the function by function pointer(perf_ui_init) after it is
gotten by 'dlsym()' ?
Why use 'dlsym()' ?
Is it better than calling directly the function ?
- Taeung -
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