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https://github.com/Gericom/teak-llvm.git
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19474e1801
This module was originally intended to be imported by top-level scripts to be able to find the LLDB packages and third party libraries. Packages themselves shouldn't need to import it, because by the time it gets into the package, the top-level script should have already done this. Indeed, it was just adding the same values to sys.path multiple times, so this patch is essentially no functional change. To make sure it doesn't get re-introduced, we also delete the `use_lldb_suite` module from `lldbsuite/test`, although the original copy still remains in `lldb/test` llvm-svn: 251963
222 lines
9.7 KiB
Python
222 lines
9.7 KiB
Python
"""Test that we handle inferiors that send signals to themselves"""
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from __future__ import print_function
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import os
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import lldb
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from lldbsuite.test.lldbtest import *
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import lldbsuite.test.lldbutil as lldbutil
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import re
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@skipIfWindows # signals do not exist on Windows
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class RaiseTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def test_sigstop(self):
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self.build()
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self.signal_test('SIGSTOP', False)
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# passing of SIGSTOP is not correctly handled, so not testing that scenario: https://llvm.org/bugs/show_bug.cgi?id=23574
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@skipIfDarwin # darwin does not support real time signals
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@skipIfTargetAndroid()
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def test_sigsigrtmin(self):
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self.build()
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self.signal_test('SIGRTMIN', True)
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def launch(self, target, signal):
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# launch the process, do not stop at entry point.
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process = target.LaunchSimple([signal], None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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self.assertEqual(process.GetState(), lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertTrue(thread.IsValid(), "Thread should be stopped due to a breakpoint")
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return process
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def set_handle(self, signal, pass_signal, stop_at_signal, notify_signal):
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return_obj = lldb.SBCommandReturnObject()
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self.dbg.GetCommandInterpreter().HandleCommand(
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"process handle %s -p %s -s %s -n %s" % (signal, pass_signal, stop_at_signal, notify_signal),
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return_obj)
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self.assertTrue (return_obj.Succeeded() == True, "Setting signal handling failed")
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def signal_test(self, signal, test_passing):
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"""Test that we handle inferior raising signals"""
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exe = os.path.join(os.getcwd(), "a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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lldbutil.run_break_set_by_symbol(self, "main")
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# launch
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process = self.launch(target, signal)
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signo = process.GetUnixSignals().GetSignalNumberFromName(signal)
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# retrieve default signal disposition
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return_obj = lldb.SBCommandReturnObject()
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self.dbg.GetCommandInterpreter().HandleCommand("process handle %s " % signal, return_obj)
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match = re.match('NAME *PASS *STOP *NOTIFY.*(false|true) *(false|true) *(false|true)',
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return_obj.GetOutput(), re.IGNORECASE | re.DOTALL)
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if not match:
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self.fail('Unable to retrieve default signal disposition.')
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default_pass = match.group(1)
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default_stop = match.group(2)
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default_notify = match.group(3)
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# Make sure we stop at the signal
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self.set_handle(signal, "false", "true", "true")
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process.Continue()
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self.assertEqual(process.GetState(), lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
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self.assertTrue(thread.IsValid(), "Thread should be stopped due to a signal")
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self.assertTrue(thread.GetStopReasonDataCount() >= 1, "There was data in the event.")
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self.assertEqual(thread.GetStopReasonDataAtIndex(0), signo,
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"The stop signal was %s" % signal)
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# Continue until we exit.
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process.Continue()
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), 0)
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# launch again
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process = self.launch(target, signal)
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# Make sure we do not stop at the signal. We should still get the notification.
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self.set_handle(signal, "false", "false", "true")
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self.expect("process continue", substrs=["stopped and restarted", signal])
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), 0)
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# launch again
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process = self.launch(target, signal)
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# Make sure we do not stop at the signal, and we do not get the notification.
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self.set_handle(signal, "false", "false", "false")
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self.expect("process continue", substrs=["stopped and restarted"], matching=False)
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), 0)
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if not test_passing:
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# reset signal handling to default
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self.set_handle(signal, default_pass, default_stop, default_notify)
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return
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# launch again
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process = self.launch(target, signal)
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# Make sure we stop at the signal
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self.set_handle(signal, "true", "true", "true")
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process.Continue()
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self.assertEqual(process.GetState(), lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
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self.assertTrue(thread.IsValid(), "Thread should be stopped due to a signal")
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self.assertTrue(thread.GetStopReasonDataCount() >= 1, "There was data in the event.")
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self.assertEqual(thread.GetStopReasonDataAtIndex(0),
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process.GetUnixSignals().GetSignalNumberFromName(signal),
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"The stop signal was %s" % signal)
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# Continue until we exit. The process should receive the signal.
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process.Continue()
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), signo)
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# launch again
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process = self.launch(target, signal)
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# Make sure we do not stop at the signal. We should still get the notification. Process
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# should receive the signal.
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self.set_handle(signal, "true", "false", "true")
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self.expect("process continue", substrs=["stopped and restarted", signal])
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), signo)
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# launch again
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process = self.launch(target, signal)
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# Make sure we do not stop at the signal, and we do not get the notification. Process
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# should receive the signal.
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self.set_handle(signal, "true", "false", "false")
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self.expect("process continue", substrs=["stopped and restarted"], matching=False)
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), signo)
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# reset signal handling to default
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self.set_handle(signal, default_pass, default_stop, default_notify)
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@expectedFailureLinux("llvm.org/pr24530") # the signal the inferior generates gets lost
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@expectedFailureDarwin("llvm.org/pr24530") # the signal the inferior generates gets lost
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def test_restart_bug(self):
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"""Test that we catch a signal in the edge case where the process receives it while we are
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about to interrupt it"""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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bkpt = target.BreakpointCreateByName("main")
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self.assertTrue(bkpt.IsValid(), VALID_BREAKPOINT)
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# launch the inferior and don't wait for it to stop
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self.dbg.SetAsync(True)
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error = lldb.SBError()
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listener = lldb.SBListener("my listener")
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process = target.Launch (listener,
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["SIGSTOP"], # argv
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None, # envp
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None, # stdin_path
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None, # stdout_path
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None, # stderr_path
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None, # working directory
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0, # launch flags
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False, # Stop at entry
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error) # error
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self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
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event = lldb.SBEvent()
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# Give the child enough time to reach the breakpoint,
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# while clearing out all the pending events.
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# The last WaitForEvent call will time out after 2 seconds.
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while listener.WaitForEvent(2, event):
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if self.TraceOn():
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print("Process changing state to:", self.dbg.StateAsCString(process.GetStateFromEvent(event)))
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# now the process should be stopped
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self.assertEqual(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
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self.assertEqual(len(lldbutil.get_threads_stopped_at_breakpoint(process, bkpt)), 1,
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"A thread should be stopped at breakpoint")
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# Remove all breakpoints. This makes sure we don't have to single-step over them when we
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# resume the process below
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target.DeleteAllBreakpoints()
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# resume the process and immediately try to set another breakpoint. When using the remote
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# stub, this will trigger a request to stop the process just as it is about to stop
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# naturally due to a SIGSTOP signal it raises. Make sure we do not lose this signal.
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process.Continue()
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self.assertTrue(target.BreakpointCreateByName("handler").IsValid(), VALID_BREAKPOINT)
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# Clear the events again
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while listener.WaitForEvent(2, event):
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if self.TraceOn():
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print("Process changing state to:", self.dbg.StateAsCString(process.GetStateFromEvent(event)))
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# The process should be stopped due to a signal
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self.assertEqual(process.GetState(), lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
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self.assertTrue(thread.IsValid(), "Thread should be stopped due to a signal")
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self.assertTrue(thread.GetStopReasonDataCount() >= 1, "There was data in the event.")
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signo = process.GetUnixSignals().GetSignalNumberFromName("SIGSTOP")
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self.assertEqual(thread.GetStopReasonDataAtIndex(0), signo,
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"The stop signal was %s" % signal)
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# We are done
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process.Kill()
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