| """Test that we handle inferiors which change their process group""" |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class ChangeProcessGroupTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| NO_DEBUG_INFO_TESTCASE = True |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line number to break for main.c. |
| self.line = line_number('main.c', '// Set breakpoint here') |
| |
| @skipIfFreeBSD # Times out on FreeBSD llvm.org/pr23731 |
| @skipIfWindows # setpgid call does not exist on Windows |
| @expectedFailureAndroid("http://llvm.org/pr23762", api_levels=[16]) |
| @expectedFailureAll(oslist=['ios', 'watchos', 'tvos', 'bridgeos'], bugnumber="<rdar://problem/34538611>") # old lldb-server has race condition, launching an inferior and then launching debugserver in quick succession sometimes fails |
| def test_setpgid(self): |
| self.build() |
| exe = self.getBuildArtifact("a.out") |
| |
| # Use a file as a synchronization point between test and inferior. |
| pid_file_path = lldbutil.append_to_process_working_directory(self, |
| "pid_file_%d" % (int(time.time()))) |
| self.addTearDownHook( |
| lambda: self.run_platform_command( |
| "rm %s" % |
| (pid_file_path))) |
| |
| popen = self.spawnSubprocess(exe, [pid_file_path]) |
| self.addTearDownHook(self.cleanupSubprocesses) |
| |
| pid = lldbutil.wait_for_file_on_target(self, pid_file_path) |
| |
| # make sure we cleanup the forked child also |
| def cleanupChild(): |
| if lldb.remote_platform: |
| lldb.remote_platform.Kill(int(pid)) |
| else: |
| if os.path.exists("/proc/" + pid): |
| os.kill(int(pid), signal.SIGKILL) |
| self.addTearDownHook(cleanupChild) |
| |
| # Create a target by the debugger. |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| listener = lldb.SBListener("my.attach.listener") |
| error = lldb.SBError() |
| process = target.AttachToProcessWithID(listener, int(pid), error) |
| self.assertTrue(error.Success() and process, PROCESS_IS_VALID) |
| |
| # set a breakpoint just before the setpgid() call |
| lldbutil.run_break_set_by_file_and_line( |
| self, 'main.c', self.line, num_expected_locations=-1) |
| |
| thread = process.GetSelectedThread() |
| |
| # release the child from its loop |
| value = thread.GetSelectedFrame().EvaluateExpression("release_child_flag = 1") |
| self.assertTrue(value.IsValid() and value.GetValueAsUnsigned(0) == 1) |
| process.Continue() |
| |
| # make sure the child's process group id is different from its pid |
| value = thread.GetSelectedFrame().EvaluateExpression("(int)getpgid(0)") |
| self.assertTrue(value.IsValid()) |
| self.assertNotEqual(value.GetValueAsUnsigned(0), int(pid)) |
| |
| # step over the setpgid() call |
| thread.StepOver() |
| self.assertEqual(thread.GetStopReason(), lldb.eStopReasonPlanComplete) |
| |
| # verify that the process group has been set correctly |
| # this also checks that we are still in full control of the child |
| value = thread.GetSelectedFrame().EvaluateExpression("(int)getpgid(0)") |
| self.assertTrue(value.IsValid()) |
| self.assertEqual(value.GetValueAsUnsigned(0), int(pid)) |
| |
| # run to completion |
| process.Continue() |
| self.assertEqual(process.GetState(), lldb.eStateExited) |