TestTsanThreadNumbers.py
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"""
Tests that TSan and LLDB have correct thread numbers.
"""
import lldb
from lldbsuite.test.lldbtest import *
from lldbsuite.test.decorators import *
import lldbsuite.test.lldbutil as lldbutil
import json
class TsanThreadNumbersTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@expectedFailureAll(
oslist=["linux"],
bugnumber="non-core functionality, need to reenable and fix later (DES 2014.11.07)")
@expectedFailureNetBSD
@skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default
@skipIfRemote
@skipUnlessThreadSanitizer
def test(self):
self.build()
self.tsan_tests()
def tsan_tests(self):
exe = self.getBuildArtifact("a.out")
self.expect(
"file " + exe,
patterns=["Current executable set to .*a.out"])
self.runCmd("run")
stop_reason = self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason()
if stop_reason == lldb.eStopReasonExec:
# On OS X 10.10 and older, we need to re-exec to enable
# interceptors.
self.runCmd("continue")
# the stop reason of the thread should be breakpoint.
self.expect("thread list", "A data race should be detected",
substrs=['stopped', 'stop reason = Data race detected'])
self.assertEqual(
self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason(),
lldb.eStopReasonInstrumentation)
report_thread_id = self.dbg.GetSelectedTarget(
).process.GetSelectedThread().GetIndexID()
self.expect(
"thread info -s",
"The extended stop info should contain the TSan provided fields",
substrs=[
"instrumentation_class",
"description",
"mops"])
output_lines = self.res.GetOutput().split('\n')
json_line = '\n'.join(output_lines[2:])
data = json.loads(json_line)
self.assertEqual(data["instrumentation_class"], "ThreadSanitizer")
self.assertEqual(data["issue_type"], "data-race")
self.assertEqual(len(data["mops"]), 2)
self.assertEqual(data["mops"][0]["thread_id"], report_thread_id)
other_thread_id = data["mops"][1]["thread_id"]
self.assertNotEqual(other_thread_id, report_thread_id)
other_thread = self.dbg.GetSelectedTarget(
).process.GetThreadByIndexID(other_thread_id)
self.assertTrue(other_thread.IsValid())
self.runCmd("thread select %d" % other_thread_id)
self.expect(
"thread backtrace",
"The other thread should be stopped in f1 or f2",
substrs=[
"a.out",
"main.c"])