lldb/test/API/functionalities/tsan/thread_numbers/TestTsanThreadNumbers.py

   1 """
   2 Tests that TSan and LLDB have correct thread numbers.
   3 """
   4
   5 import lldb
   6 from lldbsuite.test.lldbtest import *
   7 from lldbsuite.test.decorators import *
   8 import lldbsuite.test.lldbutil as lldbutil
   9 import json
  10
  11
  12 class TsanThreadNumbersTestCase(TestBase):
  13     @expectedFailureAll(
  14         oslist=["linux"],
  15         bugnumber="non-core functionality, need to reenable and fix later (DES 2014.11.07)",
  16     )
  17     @expectedFailureNetBSD
  18     @skipIfFreeBSD  # llvm.org/pr21136 runtimes not yet available by default
  19     @skipIfRemote
  20     @skipUnlessThreadSanitizer
  21     def test(self):
  22         self.build()
  23         self.tsan_tests()
  24
  25     def tsan_tests(self):
  26         exe = self.getBuildArtifact("a.out")
  27         self.expect("file " + exe, patterns=["Current executable set to .*a.out"])
  28
  29         self.runCmd("run")
  30
  31         stop_reason = (
  32             self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason()
  33         )
  34         if stop_reason == lldb.eStopReasonExec:
  35             # On OS X 10.10 and older, we need to re-exec to enable
  36             # interceptors.
  37             self.runCmd("continue")
  38
  39         # the stop reason of the thread should be breakpoint.
  40         self.expect(
  41             "thread list",
  42             "A data race should be detected",
  43             substrs=["stopped", "stop reason = Data race detected"],
  44         )
  45
  46         self.assertEqual(
  47             self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason(),
  48             lldb.eStopReasonInstrumentation,
  49         )
  50
  51         report_thread_id = (
  52             self.dbg.GetSelectedTarget().process.GetSelectedThread().GetIndexID()
  53         )
  54
  55         self.expect(
  56             "thread info -s",
  57             "The extended stop info should contain the TSan provided fields",
  58             substrs=["instrumentation_class", "description", "mops"],
  59         )
  60
  61         output_lines = self.res.GetOutput().split("\n")
  62         json_line = "\n".join(output_lines[2:])
  63         data = json.loads(json_line)
  64         self.assertEqual(data["instrumentation_class"], "ThreadSanitizer")
  65         self.assertEqual(data["issue_type"], "data-race")
  66         self.assertEqual(len(data["mops"]), 2)
  67
  68         self.assertEqual(data["mops"][0]["thread_id"], report_thread_id)
  69
  70         other_thread_id = data["mops"][1]["thread_id"]
  71         self.assertNotEqual(other_thread_id, report_thread_id)
  72         other_thread = self.dbg.GetSelectedTarget().process.GetThreadByIndexID(
  73             other_thread_id
  74         )
  75         self.assertTrue(other_thread.IsValid())
  76
  77         self.runCmd("thread select %d" % other_thread_id)
  78
  79         self.expect(
  80             "thread backtrace",
  81             "The other thread should be stopped in f1 or f2",
  82             substrs=["a.out", "main.c"],
  83         )