xref: /llvm-project/lldb/test/API/functionalities/thread/state_after_expression/TestStateAfterExpression.py (revision 2238dcc39358353cac21df75c3c3286ab20b8f53)

"""
Make sure the stop reason of a thread that did not run
during an expression is not changed by running the expression
"""


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


class TestStopReasonAfterExpression(TestBase):
    @skipIfWindows
    @expectedFailureAll(oslist=["freebsd"], bugnumber="llvm.org/pr48415")
    @expectedFlakeyNetBSD
    def test_thread_state_after_expr(self):
        self.build()
        self.main_source_file = lldb.SBFileSpec("main.cpp")
        self.do_test()

    def do_test(self):
        (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
            self, "Set a breakpoint here", self.main_source_file
        )

        self.assertEqual(bkpt.GetNumLocations(), 2, "Got two locations")

        # So now thread holds the main thread.  Continue to hit the
        # breakpoint again on the spawned thread:

        threads = lldbutil.continue_to_breakpoint(process, bkpt)
        self.assertEqual(len(threads), 1, "Hit the breakpoint the second time")
        other_thread = threads[0]

        self.assertNotEqual(
            thread.GetThreadID(), other_thread.GetThreadID(), "A different thread"
        )
        # Run an expression ONLY on other_thread.  Don't let thread run:
        options = lldb.SBExpressionOptions()
        options.SetTryAllThreads(False)
        options.SetStopOthers(True)

        result = thread.frames[0].EvaluateExpression(
            '(int) printf("Hello\\n")', options
        )
        self.assertSuccess(result.GetError(), "Expression failed")

        stop_reason = other_thread.GetStopReason()

        self.assertStopReason(
            stop_reason,
            lldb.eStopReasonBreakpoint,
            "Still records stopped at breakpoint: %s"
            % (lldbutil.stop_reason_to_str(stop_reason)),
        )
        self.assertEqual(
            other_thread.GetStopReasonDataAtIndex(0),
            1,
            "Still records stopped at right breakpoint",
        )