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