def dispatch_request(self, symbol_name=None):
if request.method == "POST":
helper = BacktraceHelper(self.collector)
snippet = request.form["snippet"]
self.template_vars["snippet"] = snippet
self.template_vars["functions"] = helper.derive_function_symbols(snippet)
return self.render_template("rack.html.jinja", "rack")
def dispatch_request(self, symbol_name=None):
if request.method == "POST":
helper = BacktraceHelper(self.collector)
snippet = request.form["snippet"]
self.template_vars["snippet"] = snippet
self.template_vars["functions"] = helper.derive_function_symbols(snippet)
return self.render_template("rack.html.jinja", "rack")
def test_transform_known_symbols(self):
r = BacktraceHelper(TestBacktraceHelper.FakeCollector([
"a", "c", "d",
]))
def f(symbol):
return symbol[collector.NAME] + symbol[collector.NAME]
actual = r.transform_known_symbols("0 1 a b c d e f 0 2", f)
self.assertEqual("0 1 aa b cc dd e f 0 2", actual)
def test_returns_known_symbols(self):
r = BacktraceHelper(TestBacktraceHelper.FakeCollector([
"codepoint_get_horizontal_advance", "text_walk_lines",
]))
actual = r.derive_function_symbols("""
fontinfo=0x200010ec <s_system_fonts_info_table+200>) 16 at ../src/fw/applib/graphics/text_resources.c:347
#4 0x08012220 in codepoint_get_horizontal_advance () 16
#5 0x08012602 in walk_line () 112
#6 0x080128d6 in text_walk_lines.constprop.8 () (inlined)
""")
self.assertEqual(["codepoint_get_horizontal_advance", "text_walk_lines"], [f[collector.NAME] for f in actual])
def symbols_filter(context, value):
renderer = renderer_from_context(context)
if renderer:
helper = BacktraceHelper(renderer.collector)
def make_links(s):
name = s[collector.NAME]
url = renderer.url_for_symbol_name(name, context)
return '<a href="%s">%s</a>' % (url, name)
if isinstance(value, markupsafe.Markup):
value = value.__html__().unescape()
return helper.transform_known_symbols(value, make_links)
return value
def symbols_filter(context, value):
renderer = renderer_from_context(context)
if renderer:
helper = BacktraceHelper(renderer.collector)
def make_links(s):
name = s[collector.NAME]
url = renderer.url_for_symbol_name(name, context)
return '<a href="%s">%s</a>' % (url, name)
if isinstance(value, markupsafe.Markup):
value = value.__html__().unescape()
return helper.transform_known_symbols(value, make_links)
return value
def setUp(self):
self.cc = collector.Collector()
self.a = self.cc.add_symbol("a", "a", type=collector.TYPE_FUNCTION, stack_size=1)
self.b = self.cc.add_symbol("b", "b", type=collector.TYPE_FUNCTION, stack_size=10)
self.c = self.cc.add_symbol("c", "c", type=collector.TYPE_FUNCTION, stack_size=100)
self.d = self.cc.add_symbol("d", "d", type=collector.TYPE_FUNCTION, stack_size=1000)
self.e = self.cc.add_symbol("e", "e", type=collector.TYPE_FUNCTION, stack_size=10000)
self.f = self.cc.add_symbol("f", "f", type=collector.TYPE_FUNCTION)
self.cc.enhance_call_tree()
self.cc.add_function_call(self.a, self.b)
self.cc.add_function_call(self.a, self.c)
self.cc.add_function_call(self.b, self.a)
self.cc.add_function_call(self.c, self.b)
self.cc.add_function_call(self.c, self.d)
self.cc.add_function_call(self.d, self.e)
self.cc.add_function_call(self.d, self.f)
self.h = BacktraceHelper(self.cc)
class Builder:
def __init__(self, collector, src_root):
self.files = {}
self.collector = collector
self.backtrace_helper = BacktraceHelper(collector)
self.src_root = src_root
def store_file_time(self, path, store_empty=False):
self.files[path] = 0 if store_empty else os.path.getmtime(path)
def build(self):
for f in self.files.keys():
self.store_file_time(f)
self.collector.reset()
self.collector.parse_elf(self.get_elf_path())
self.collector.enhance(self.src_root)
self.collector.parse_su_dir(self.get_su_dir())
self.build_call_trees()
def needs_build(self):
return any([os.path.getmtime(f) > t for f,t in self.files.items()])
def build_if_needed(self):
if self.needs_build():
self.build()
@abc.abstractmethod
def get_elf_path(self):
pass
@abc.abstractmethod
def get_su_dir(self):
pass
def build_call_trees(self):
for f in self.collector.all_functions():
self.backtrace_helper.deepest_callee_tree(f)
self.backtrace_helper.deepest_caller_tree(f)
def __init__(self, collector, src_root):
self.files = {}
self.collector = collector
self.backtrace_helper = BacktraceHelper(collector)
self.src_root = src_root
def __init__(self, collector, src_root):
self.files = {}
self.collector = collector
self.backtrace_helper = BacktraceHelper(collector)
self.src_root = src_root
class TestBacktraceHelperTreeSizes(unittest.TestCase):
def setUp(self):
self.cc = collector.Collector()
self.a = self.cc.add_symbol("a", "a", type=collector.TYPE_FUNCTION, stack_size=1)
self.b = self.cc.add_symbol("b", "b", type=collector.TYPE_FUNCTION, stack_size=10)
self.c = self.cc.add_symbol("c", "c", type=collector.TYPE_FUNCTION, stack_size=100)
self.d = self.cc.add_symbol("d", "d", type=collector.TYPE_FUNCTION, stack_size=1000)
self.e = self.cc.add_symbol("e", "e", type=collector.TYPE_FUNCTION, stack_size=10000)
self.f = self.cc.add_symbol("f", "f", type=collector.TYPE_FUNCTION)
self.cc.enhance_call_tree()
self.cc.add_function_call(self.a, self.b)
self.cc.add_function_call(self.a, self.c)
self.cc.add_function_call(self.b, self.a)
self.cc.add_function_call(self.c, self.b)
self.cc.add_function_call(self.c, self.d)
self.cc.add_function_call(self.d, self.e)
self.cc.add_function_call(self.d, self.f)
self.h = BacktraceHelper(self.cc)
def test_leaf_with_stack(self):
self.assertEqual((10000, [self.e]), self.h.deepest_callee_tree(self.e))
self.assertIn(collector.DEEPEST_CALLEE_TREE, self.e)
def test_leaf_without_stack(self):
self.assertEqual((0, [self.f]), self.h.deepest_callee_tree(self.f))
self.assertIn(collector.DEEPEST_CALLEE_TREE, self.f)
def test_cached_value(self):
self.f[collector.DEEPEST_CALLEE_TREE] = "cached"
self.assertEqual("cached", self.h.deepest_callee_tree(self.f))
def test_non_leaf(self):
self.assertEqual((11000, [self.d, self.e]), self.h.deepest_callee_tree(self.d))
self.assertIn(collector.DEEPEST_CALLEE_TREE, self.f)
self.assertIn(collector.DEEPEST_CALLEE_TREE, self.e)
self.assertIn(collector.DEEPEST_CALLEE_TREE, self.d)
def test_cycle_2(self):
self.a[collector.CALLEES].remove(self.c)
expected = (11, [self.a, self.b])
actual = self.h.deepest_callee_tree(self.a)
self.assertEqual(expected, actual)
expected = (10, [self.b])
actual = self.h.deepest_callee_tree(self.b)
self.assertEqual(expected, actual)
def test_cycle_3(self):
self.c[collector.CALLEES].remove(self.d)
self.assertEqual(111, self.h.deepest_callee_tree(self.a)[0])
self.assertEqual(10, self.h.deepest_callee_tree(self.b)[0])
self.assertEqual(110, self.h.deepest_callee_tree(self.c)[0])
def test_caller(self):
self.d[collector.CALLERS] = []
self.assertEqual(1000, self.h.deepest_caller_tree(self.f)[0])
self.assertEqual(11000, self.h.deepest_caller_tree(self.e)[0])
def test_caller_cycle(self):
self.assertEqual(1111, self.h.deepest_caller_tree(self.f)[0])
self.assertEqual(11111, self.h.deepest_caller_tree(self.e)[0])
def test_returns_empty_list(self):
r = BacktraceHelper(None)
self.assertEqual([], r.derive_function_symbols(""))