if args.method else ""
program += trace_template.replace("NAME", func_name) \
.replace("READ_CLASS", read_class) \
.replace("READ_METHOD", read_method) \
.replace("FILTER_CLASS", filter_class) \
.replace("FILTER_METHOD", filter_method) \
.replace("DEPTH", depth) \
.replace("UPDATE", update)
usdt.enable_probe_or_bail(probe_name, func_name)
usdt = USDT(pid=args.pid)
language = args.language
if not language:
language = utils.detect_language(languages, args.pid)
if language == "java":
enable_probe("method__entry",
"java_entry",
"bpf_usdt_readarg(2, ctx, &clazz);",
"bpf_usdt_readarg(4, ctx, &method);",
is_return=False)
enable_probe("method__return",
"java_return",
"bpf_usdt_readarg(2, ctx, &clazz);",
"bpf_usdt_readarg(4, ctx, &method);",
is_return=True)
elif language == "perl":
enable_probe("sub__entry",
"perl_entry",
def test_detect_language(self):
candidates = ["c", "java", "perl", "php", "node", "ruby", "python"]
language = detect_language(candidates, os.getpid())
self.assertEqual(language, "python")
""" % (self.begin, self.begin_save, self.end,
args.minimum * 1000000, self.end_save)
return text
def attach(self):
usdt.enable_probe_or_bail(self.begin, "trace_%s" % self.begin)
usdt.enable_probe_or_bail(self.end, "trace_%s" % self.end)
def format(self, data):
return self.formatter(data)
probes = []
language = args.language
if not language:
language = utils.detect_language(languages, args.pid)
#
# Java
#
if language == "java":
# Oddly, the gc__begin/gc__end probes don't really have any useful
# information, while the mem__pool* ones do. There's also a bunch of
# probes described in the hotspot_gc*.stp file which aren't there
# when looking at a live Java process.
begin_save = """
bpf_usdt_readarg(6, ctx, &e.field1); // used bytes
bpf_usdt_readarg(8, ctx, &e.field2); // max bytes
"""
end_save = """
event.field1 = e->field1; // used bytes at start
def test_detect_language(self):
candidates = ["c", "java", "perl", "php", "node", "ruby", "python"]
language = detect_language(candidates, os.getpid())
self.assertEqual(language, "python")
