180 lines · python
1"""Test that we handle inferiors that send signals to themselves"""2 3 4import lldb5import re6from lldbsuite.test.lldbplatformutil import getDarwinOSTriples7from lldbsuite.test.decorators import *8from lldbsuite.test.lldbtest import *9from lldbsuite.test import lldbutil10 11 12@skipIfWindows # signals do not exist on Windows13class RaiseTestCase(TestBase):14 NO_DEBUG_INFO_TESTCASE = True15 16 @skipIfNetBSD # Hangs on NetBSD17 def test_sigstop(self):18 self.build()19 self.signal_test("SIGSTOP", False)20 # passing of SIGSTOP is not correctly handled, so not testing that21 # scenario: https://llvm.org/bugs/show_bug.cgi?id=2357422 23 @skipIfDarwin # darwin does not support real time signals24 @skipIfTargetAndroid()25 def test_sigsigrtmin(self):26 self.build()27 self.signal_test("SIGRTMIN", True)28 29 @skipIfNetBSD # Hangs on NetBSD30 def test_sigtrap(self):31 self.build()32 self.signal_test("SIGTRAP", True)33 34 def launch(self, target, signal):35 # launch the process, do not stop at entry point.36 # If we have gotten the default for this signal, reset that as well.37 if len(self.default_pass) != 0:38 lldbutil.set_actions_for_signal(39 self, signal, self.default_pass, self.default_stop, self.default_notify40 )41 42 process = target.LaunchSimple(43 [signal], None, self.get_process_working_directory()44 )45 self.assertTrue(process, PROCESS_IS_VALID)46 self.assertState(process.GetState(), lldb.eStateStopped)47 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)48 self.assertTrue(49 thread.IsValid(), "Thread should be stopped due to a breakpoint"50 )51 return process52 53 def set_handle(self, signal, pass_signal, stop_at_signal, notify_signal):54 return_obj = lldb.SBCommandReturnObject()55 self.dbg.GetCommandInterpreter().HandleCommand(56 "process handle %s -p %s -s %s -n %s"57 % (signal, pass_signal, stop_at_signal, notify_signal),58 return_obj,59 )60 self.assertTrue(return_obj.Succeeded(), "Setting signal handling failed")61 62 def signal_test(self, signal, test_passing):63 """Test that we handle inferior raising signals"""64 exe = self.getBuildArtifact("a.out")65 66 # Create a target by the debugger.67 target = self.dbg.CreateTarget(exe)68 self.assertTrue(target, VALID_TARGET)69 lldbutil.run_break_set_by_symbol(self, "main")70 self.default_pass = ""71 self.default_stop = ""72 self.default_notify = ""73 74 # launch75 process = self.launch(target, signal)76 signo = process.GetUnixSignals().GetSignalNumberFromName(signal)77 78 # retrieve default signal disposition79 (80 self.default_pass,81 self.default_stop,82 self.default_notify,83 ) = lldbutil.get_actions_for_signal(self, signal)84 85 # Make sure we stop at the signal86 lldbutil.set_actions_for_signal(self, signal, "false", "true", "true")87 process.Continue()88 self.assertState(process.GetState(), lldb.eStateStopped)89 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)90 self.assertTrue(thread.IsValid(), "Thread should be stopped due to a signal")91 self.assertGreaterEqual(92 thread.GetStopReasonDataCount(), 1, "There was data in the event."93 )94 self.assertEqual(95 thread.GetStopReasonDataAtIndex(0), signo, "The stop signal was %s" % signal96 )97 98 # Continue until we exit.99 process.Continue()100 self.assertState(process.GetState(), lldb.eStateExited)101 self.assertEqual(process.GetExitStatus(), 0)102 103 process = self.launch(target, signal)104 105 # Make sure we do not stop at the signal. We should still get the106 # notification.107 lldbutil.set_actions_for_signal(self, signal, "false", "false", "true")108 self.expect("process continue", substrs=["stopped and restarted", signal])109 self.assertState(process.GetState(), lldb.eStateExited)110 self.assertEqual(process.GetExitStatus(), 0)111 112 # launch again113 process = self.launch(target, signal)114 115 # Make sure we do not stop at the signal, and we do not get the116 # notification.117 lldbutil.set_actions_for_signal(self, signal, "false", "false", "false")118 self.expect(119 "process continue", substrs=["stopped and restarted"], matching=False120 )121 self.assertState(process.GetState(), lldb.eStateExited)122 self.assertEqual(process.GetExitStatus(), 0)123 124 if not test_passing:125 # reset signal handling to default126 lldbutil.set_actions_for_signal(127 self, signal, self.default_pass, self.default_stop, self.default_notify128 )129 return130 131 # launch again132 process = self.launch(target, signal)133 134 # Make sure we stop at the signal135 lldbutil.set_actions_for_signal(self, signal, "true", "true", "true")136 process.Continue()137 self.assertState(process.GetState(), lldb.eStateStopped)138 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)139 self.assertTrue(thread.IsValid(), "Thread should be stopped due to a signal")140 self.assertGreaterEqual(141 thread.GetStopReasonDataCount(), 1, "There was data in the event."142 )143 self.assertEqual(144 thread.GetStopReasonDataAtIndex(0),145 process.GetUnixSignals().GetSignalNumberFromName(signal),146 "The stop signal was %s" % signal,147 )148 149 # Continue until we exit. The process should receive the signal.150 process.Continue()151 self.assertState(process.GetState(), lldb.eStateExited)152 self.assertEqual(process.GetExitStatus(), signo)153 154 # launch again155 process = self.launch(target, signal)156 157 # Make sure we do not stop at the signal. We should still get the notification. Process158 # should receive the signal.159 lldbutil.set_actions_for_signal(self, signal, "true", "false", "true")160 self.expect("process continue", substrs=["stopped and restarted", signal])161 self.assertState(process.GetState(), lldb.eStateExited)162 self.assertEqual(process.GetExitStatus(), signo)163 164 # launch again165 process = self.launch(target, signal)166 167 # Make sure we do not stop at the signal, and we do not get the notification. Process168 # should receive the signal.169 lldbutil.set_actions_for_signal(self, signal, "true", "false", "false")170 self.expect(171 "process continue", substrs=["stopped and restarted"], matching=False172 )173 self.assertState(process.GetState(), lldb.eStateExited)174 self.assertEqual(process.GetExitStatus(), signo)175 176 # reset signal handling to default177 lldbutil.set_actions_for_signal(178 self, signal, self.default_pass, self.default_stop, self.default_notify179 )180