| """ |
| Ensure that when the interrupt is raised we still make frame 0. |
| and make sure "GetNumFrames" isn't interrupted. |
| """ |
| |
| import lldb |
| import lldbsuite.test.lldbutil as lldbutil |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test.decorators import * |
| |
| |
| class TestInterruptingBacktrace(TestBase): |
| NO_DEBUG_INFO_TESTCASE = True |
| |
| @skipIf(oslist=["linux"], archs=["arm"]) |
| def test_backtrace_interrupt(self): |
| """Use RequestInterrupt followed by stack operations |
| to ensure correct interrupt behavior for stacks.""" |
| self.build() |
| self.main_source_file = lldb.SBFileSpec("main.c") |
| self.bt_interrupt_test() |
| |
| def bt_interrupt_test(self): |
| (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint( |
| self, "Set a breakpoint here", self.main_source_file |
| ) |
| |
| # Now continue, and when we stop we will have crashed. |
| process.Continue() |
| self.dbg.RequestInterrupt() |
| |
| # Be sure to turn this off again: |
| def cleanup(): |
| if self.dbg.InterruptRequested(): |
| self.dbg.CancelInterruptRequest() |
| |
| self.addTearDownHook(cleanup) |
| |
| frame_0 = thread.GetFrameAtIndex(0) |
| self.assertTrue(frame_0.IsValid(), "Got a good 0th frame") |
| # The interrupt flag is up already, so any attempt to backtrace |
| # should be cut short: |
| frame_1 = thread.GetFrameAtIndex(1) |
| self.assertFalse(frame_1.IsValid(), "Prevented from getting more frames") |
| # Since GetNumFrames is a contract, we don't interrupt it: |
| num_frames = thread.GetNumFrames() |
| print(f"Number of frames: {num_frames}") |
| self.assertGreater(num_frames, 1, "Got many frames") |
| |
| self.dbg.CancelInterruptRequest() |