1"""
2Test that expr will time out and allow other threads to run if it blocks.
3"""
4
5from __future__ import print_function
6
7
8import lldb
9from lldbsuite.test.decorators import *
10from lldbsuite.test.lldbtest import *
11from lldbsuite.test import lldbutil
12
13
14class ExprDoesntDeadlockTestCase(TestBase):
15
16    @add_test_categories(["basic_process"])
17    def test_with_run_command(self):
18        """Test that expr will time out and allow other threads to run if it blocks."""
19        self.build()
20        target = self.createTestTarget()
21
22        # Now create a breakpoint at source line before call_me_to_get_lock
23        # gets called.
24
25        main_file_spec = lldb.SBFileSpec("locking.cpp")
26        breakpoint = target.BreakpointCreateBySourceRegex(
27            'Break here', main_file_spec)
28        if self.TraceOn():
29            print("breakpoint:", breakpoint)
30        self.assertTrue(breakpoint and
31                        breakpoint.GetNumLocations() == 1,
32                        VALID_BREAKPOINT)
33
34        # Now launch the process, and do not stop at entry point.
35        process = target.LaunchSimple(
36            None, None, self.get_process_working_directory())
37        self.assertTrue(process, PROCESS_IS_VALID)
38
39        # Frame #0 should be on self.line1 and the break condition should hold.
40        from lldbsuite.test.lldbutil import get_stopped_thread
41        thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint)
42        self.assertTrue(
43            thread.IsValid(),
44            "There should be a thread stopped due to breakpoint condition")
45
46        frame0 = thread.GetFrameAtIndex(0)
47
48        var = frame0.EvaluateExpression("call_me_to_get_lock(get_int())")
49        self.assertTrue(var.IsValid())
50        self.assertEqual(var.GetValueAsSigned(0), 567)
51