lldb/test/API/functionalities/thread/exit_during_break/TestExitDuringBreak.py

"""
Test number of threads.
"""


import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil


@skipIfTargetDoesNotSupportThreads()
class ExitDuringBreakpointTestCase(TestBase):
    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
        # Find the line number for our breakpoint.
        self.breakpoint = line_number("main.cpp", "// Set breakpoint here")

    def test(self):
        """Test thread exit during breakpoint handling."""
        self.build()
        exe = self.getBuildArtifact("a.out")
        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)

        # This should create a breakpoint in the main thread.
        lldbutil.run_break_set_by_file_and_line(
            self, "main.cpp", self.breakpoint, num_expected_locations=1
        )

        # Run the program.
        self.runCmd("run", RUN_SUCCEEDED)

        # The stop reason of the thread should be breakpoint.
        self.expect(
            "thread list",
            STOPPED_DUE_TO_BREAKPOINT,
            substrs=["stopped", "stop reason = breakpoint"],
        )

        # Get the target process
        target = self.dbg.GetSelectedTarget()
        process = target.GetProcess()

        # The exit probably occurred during breakpoint handling, but it isn't
        # guaranteed.  The main thing we're testing here is that the debugger
        # handles this cleanly is some way.

        # Get the number of threads
        num_threads = process.GetNumThreads()

        # Make sure we see at least five threads
        self.assertGreaterEqual(
            num_threads,
            5,
            "Number of expected threads and actual threads do not match.",
        )

        # Run to completion
        self.runCmd("continue")

        # At this point, the inferior process should have exited.
        self.assertEqual(process.GetState(), lldb.eStateExited, PROCESS_EXITED)