104 lines · python
1"""Test that lldb command 'process signal SIGUSR1' to send a signal to the inferior works."""2 3 4import lldb5from lldbsuite.test.decorators import *6from lldbsuite.test.lldbtest import *7from lldbsuite.test import lldbutil8 9 10class SendSignalTestCase(TestBase):11 def setUp(self):12 # Call super's setUp().13 TestBase.setUp(self)14 # Find the line number to break inside main().15 self.line = line_number("main.c", "Put breakpoint here")16 17 @expectedFailureNetBSD(bugnumber="llvm.org/pr43959")18 @skipIfWindows # Windows does not support signals19 def test_with_run_command(self):20 """Test that lldb command 'process signal SIGUSR1' sends a signal to the inferior process."""21 self.build()22 exe = self.getBuildArtifact("a.out")23 24 # Create a target by the debugger.25 target = self.dbg.CreateTarget(exe)26 self.assertTrue(target, VALID_TARGET)27 28 # Now create a breakpoint on main.c by name 'c'.29 breakpoint = target.BreakpointCreateByLocation("main.c", self.line)30 self.assertTrue(31 breakpoint and breakpoint.GetNumLocations() == 1, VALID_BREAKPOINT32 )33 34 # Get the breakpoint location from breakpoint after we verified that,35 # indeed, it has one location.36 location = breakpoint.GetLocationAtIndex(0)37 self.assertTrue(location and location.IsEnabled(), VALID_BREAKPOINT_LOCATION)38 39 # Now launch the process, no arguments & do not stop at entry point.40 launch_info = target.GetLaunchInfo()41 launch_info.SetWorkingDirectory(self.get_process_working_directory())42 43 process_listener = lldb.SBListener("signal_test_listener")44 launch_info.SetListener(process_listener)45 error = lldb.SBError()46 process = target.Launch(launch_info, error)47 self.assertTrue(process, PROCESS_IS_VALID)48 49 self.runCmd("process handle -n False -p True -s True SIGUSR1")50 51 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)52 self.assertTrue(thread.IsValid(), "We hit the first breakpoint.")53 54 # After resuming the process, send it a SIGUSR1 signal.55 56 self.setAsync(True)57 58 self.assertTrue(process_listener.IsValid(), "Got a good process listener")59 60 # Disable our breakpoint, we don't want to hit it anymore...61 breakpoint.SetEnabled(False)62 63 # Now continue:64 process.Continue()65 66 self.match_state(process_listener, lldb.eStateRunning)67 68 # Now signal the process, and make sure it stops:69 process.Signal(lldbutil.get_signal_number("SIGUSR1"))70 71 self.match_state(process_listener, lldb.eStateStopped)72 73 # Now make sure the thread was stopped with a SIGUSR1:74 threads = lldbutil.get_stopped_threads(process, lldb.eStopReasonSignal)75 self.assertEqual(len(threads), 1, "One thread stopped for a signal.")76 thread = threads[0]77 78 self.assertGreaterEqual(79 thread.GetStopReasonDataCount(), 1, "There was data in the event."80 )81 self.assertEqual(82 thread.GetStopReasonDataAtIndex(0),83 lldbutil.get_signal_number("SIGUSR1"),84 "The stop signal was SIGUSR1",85 )86 87 self.match("statistics dump", [r'"signals": \[', r'"SIGUSR1": 1'])88 89 def match_state(self, process_listener, expected_state):90 num_seconds = 591 broadcaster = self.process().GetBroadcaster()92 event_type_mask = lldb.SBProcess.eBroadcastBitStateChanged93 event = lldb.SBEvent()94 got_event = process_listener.WaitForEventForBroadcasterWithType(95 num_seconds, broadcaster, event_type_mask, event96 )97 self.assertTrue(got_event, "Got an event")98 state = lldb.SBProcess.GetStateFromEvent(event)99 self.assertEqual(100 state,101 expected_state,102 "It was the %s state." % lldb.SBDebugger.StateAsCString(expected_state),103 )104