"""Test that we handle inferiors that send signals to themselves""" import lldb import re from lldbsuite.test.lldbplatformutil import getDarwinOSTriples from lldbsuite.test.decorators import * from lldbsuite.test.lldbtest import * from lldbsuite.test import lldbutil @skipIfWindows # signals do not exist on Windows class RaiseTestCase(TestBase): mydir = TestBase.compute_mydir(__file__) NO_DEBUG_INFO_TESTCASE = True @skipIfNetBSD # Hangs on NetBSD def test_sigstop(self): self.build() self.signal_test('SIGSTOP', False) # passing of SIGSTOP is not correctly handled, so not testing that # scenario: https://llvm.org/bugs/show_bug.cgi?id=23574 @skipIfDarwin # darwin does not support real time signals @skipIfTargetAndroid() def test_sigsigrtmin(self): self.build() self.signal_test('SIGRTMIN', True) @skipIfNetBSD # Hangs on NetBSD def test_sigtrap(self): self.build() self.signal_test('SIGTRAP', True) def launch(self, target, signal): # launch the process, do not stop at entry point. process = target.LaunchSimple( [signal], None, self.get_process_working_directory()) self.assertTrue(process, PROCESS_IS_VALID) self.assertEqual(process.GetState(), lldb.eStateStopped) thread = lldbutil.get_stopped_thread( process, lldb.eStopReasonBreakpoint) self.assertTrue( thread.IsValid(), "Thread should be stopped due to a breakpoint") return process def set_handle(self, signal, pass_signal, stop_at_signal, notify_signal): return_obj = lldb.SBCommandReturnObject() self.dbg.GetCommandInterpreter().HandleCommand( "process handle %s -p %s -s %s -n %s" % (signal, pass_signal, stop_at_signal, notify_signal), return_obj) self.assertTrue( return_obj.Succeeded(), "Setting signal handling failed") def signal_test(self, signal, test_passing): """Test that we handle inferior raising signals""" exe = self.getBuildArtifact("a.out") # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) lldbutil.run_break_set_by_symbol(self, "main") # launch process = self.launch(target, signal) signo = process.GetUnixSignals().GetSignalNumberFromName(signal) # retrieve default signal disposition return_obj = lldb.SBCommandReturnObject() self.dbg.GetCommandInterpreter().HandleCommand( "process handle %s " % signal, return_obj) match = re.match( 'NAME *PASS *STOP *NOTIFY.*(false|true) *(false|true) *(false|true)', return_obj.GetOutput(), re.IGNORECASE | re.DOTALL) if not match: self.fail('Unable to retrieve default signal disposition.') default_pass = match.group(1) default_stop = match.group(2) default_notify = match.group(3) # Make sure we stop at the signal self.set_handle(signal, "false", "true", "true") process.Continue() self.assertEqual(process.GetState(), lldb.eStateStopped) thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal) self.assertTrue( thread.IsValid(), "Thread should be stopped due to a signal") self.assertTrue( thread.GetStopReasonDataCount() >= 1, "There was data in the event.") self.assertEqual(thread.GetStopReasonDataAtIndex(0), signo, "The stop signal was %s" % signal) # Continue until we exit. process.Continue() self.assertEqual(process.GetState(), lldb.eStateExited) self.assertEqual(process.GetExitStatus(), 0) # launch again process = self.launch(target, signal) # Make sure we do not stop at the signal. We should still get the # notification. self.set_handle(signal, "false", "false", "true") self.expect( "process continue", substrs=[ "stopped and restarted", signal]) self.assertEqual(process.GetState(), lldb.eStateExited) self.assertEqual(process.GetExitStatus(), 0) # launch again process = self.launch(target, signal) # Make sure we do not stop at the signal, and we do not get the # notification. self.set_handle(signal, "false", "false", "false") self.expect( "process continue", substrs=["stopped and restarted"], matching=False) self.assertEqual(process.GetState(), lldb.eStateExited) self.assertEqual(process.GetExitStatus(), 0) if not test_passing: # reset signal handling to default self.set_handle(signal, default_pass, default_stop, default_notify) return # launch again process = self.launch(target, signal) # Make sure we stop at the signal self.set_handle(signal, "true", "true", "true") process.Continue() self.assertEqual(process.GetState(), lldb.eStateStopped) thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal) self.assertTrue( thread.IsValid(), "Thread should be stopped due to a signal") self.assertTrue( thread.GetStopReasonDataCount() >= 1, "There was data in the event.") self.assertEqual( thread.GetStopReasonDataAtIndex(0), process.GetUnixSignals().GetSignalNumberFromName(signal), "The stop signal was %s" % signal) # Continue until we exit. The process should receive the signal. process.Continue() self.assertEqual(process.GetState(), lldb.eStateExited) self.assertEqual(process.GetExitStatus(), signo) # launch again process = self.launch(target, signal) # Make sure we do not stop at the signal. We should still get the notification. Process # should receive the signal. self.set_handle(signal, "true", "false", "true") self.expect( "process continue", substrs=[ "stopped and restarted", signal]) self.assertEqual(process.GetState(), lldb.eStateExited) self.assertEqual(process.GetExitStatus(), signo) # launch again process = self.launch(target, signal) # Make sure we do not stop at the signal, and we do not get the notification. Process # should receive the signal. self.set_handle(signal, "true", "false", "false") self.expect( "process continue", substrs=["stopped and restarted"], matching=False) self.assertEqual(process.GetState(), lldb.eStateExited) self.assertEqual(process.GetExitStatus(), signo) # reset signal handling to default self.set_handle(signal, default_pass, default_stop, default_notify)