1"""
2Test that if we hit a breakpoint on a lambda capture
3on two threads at the same time we stop only for
4the correct one.
5"""
6
7import lldb
8import lldbsuite.test.lldbutil as lldbutil
9from lldbsuite.test.decorators import *
10from lldbsuite.test.lldbtest import *
11
12
13class TestBreakOnLambdaCapture(TestBase):
14
15    NO_DEBUG_INFO_TESTCASE = True
16
17    def test_break_on_lambda_capture(self):
18        self.build()
19        self.main_source_file = lldb.SBFileSpec("main.cpp")
20
21        (target, process, main_thread, _) = lldbutil.run_to_source_breakpoint(self,
22                                                "First break", self.main_source_file)
23
24        # FIXME: This is working around a separate bug. If you hit a breakpoint and
25        # run an expression and it is the first expression you've ever run, on
26        # Darwin that will involve running the ObjC runtime parsing code, and we'll
27        # be in the middle of that when we do PerformAction on the other thread,
28        # which will cause the condition expression to fail.  Calling another
29        # expression first works around this.
30        val_obj = main_thread.frame[0].EvaluateExpression("true")
31        self.assertSuccess(val_obj.GetError(), "Ran our expression successfully")
32        self.assertEqual(val_obj.value, "true", "Value was true.")
33
34        bkpt = target.BreakpointCreateBySourceRegex("Break here in the helper",
35                                                    self.main_source_file);
36
37        bkpt.SetCondition("enable && usec == 1")
38        process.Continue()
39
40        # This is hard to test definitively, becuase it requires hitting
41        # a breakpoint on multiple threads at the same time.  On Darwin, this
42        # will happen pretty much ever time we continue.  What we are really
43        # asserting is that we only ever stop on one thread, so we approximate that
44        # by continuing 20 times and assert we only ever hit the first thread.  Either
45        # this is a platform that only reports one hit at a time, in which case all
46        # this code is unused, or we actually didn't hit the other thread.
47
48        for idx in range(0, 20):
49            process.Continue()
50            for thread in process.threads:
51                if thread.id == main_thread.id:
52                    self.assertEqual(thread.stop_reason, lldb.eStopReasonBreakpoint)
53                else:
54                    self.assertEqual(thread.stop_reason, lldb.eStopReasonNone)
55