def invoke(self, arg, from_tty):
elf = gdb.current_progspace().filename
samples = parse.sample_parser(parse.get_keyvals(elf),
parse.get_tp_sections(elf),
get_trace_buffer(), PTR_SIZE)
for sample in samples:
print(sample)
def save_traces(out):
elf = gdb.current_progspace().filename
pickler = pickle.Pickler(out)
# keyvals need to go first, because they have format_version
# key. Even if the format is changed we must guarantee that at
# least keyvals are always stored first. However, ideally, next
# versions should just have modifications at the very end to keep
# compatibility with previously collected data.
pickler.dump(parse.get_keyvals(elf))
pickler.dump(elf)
pickler.dump(PTR_SIZE)
# We are saving raw trace buffer here. Another option is to pickle
# already parsed samples. But in the chosen case it is a lot
# easier to debug the parser, because python in gdb is not very
# convenient for development.
pickler.dump(parse.get_tp_sections(elf))
pickler.dump(get_trace_buffer())