"""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):
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.
# If we have gotten the default for this signal, reset that as well.
if len(self.default_pass) != 0:
lldbutil.set_actions_for_signal(
self, signal, self.default_pass, self.default_stop, self.default_notify
)
process = target.LaunchSimple(
[signal], None, self.get_process_working_directory()
)
self.assertTrue(process, PROCESS_IS_VALID)
self.assertState(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")
self.default_pass = ""
self.default_stop = ""
self.default_notify = ""
# launch
process = self.launch(target, signal)
signo = process.GetUnixSignals().GetSignalNumberFromName(signal)
# retrieve default signal disposition
(
self.default_pass,
self.default_stop,
self.default_notify,
) = lldbutil.get_actions_for_signal(self, signal)
# Make sure we stop at the signal
lldbutil.set_actions_for_signal(self, signal, "false", "true", "true")
process.Continue()
self.assertState(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.assertGreaterEqual(
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.assertState(process.GetState(), lldb.eStateExited)
self.assertEqual(process.GetExitStatus(), 0)
process = self.launch(target, signal)
# Make sure we do not stop at the signal. We should still get the
# notification.
lldbutil.set_actions_for_signal(self, signal, "false", "false", "true")
self.expect("process continue", substrs=["stopped and restarted", signal])
self.assertState(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.
lldbutil.set_actions_for_signal(self, signal, "false", "false", "false")
self.expect(
"process continue", substrs=["stopped and restarted"], matching=False
)
self.assertState(process.GetState(), lldb.eStateExited)
self.assertEqual(process.GetExitStatus(), 0)
if not test_passing:
# reset signal handling to default
lldbutil.set_actions_for_signal(
self, signal, self.default_pass, self.default_stop, self.default_notify
)
return
# launch again
process = self.launch(target, signal)
# Make sure we stop at the signal
lldbutil.set_actions_for_signal(self, signal, "true", "true", "true")
process.Continue()
self.assertState(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.assertGreaterEqual(
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.assertState(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.
lldbutil.set_actions_for_signal(self, signal, "true", "false", "true")
self.expect("process continue", substrs=["stopped and restarted", signal])
self.assertState(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.
lldbutil.set_actions_for_signal(self, signal, "true", "false", "false")
self.expect(
"process continue", substrs=["stopped and restarted"], matching=False
)
self.assertState(process.GetState(), lldb.eStateExited)
self.assertEqual(process.GetExitStatus(), signo)
# reset signal handling to default
lldbutil.set_actions_for_signal(
self, signal, self.default_pass, self.default_stop, self.default_notify
)
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