| """ |
| Test number of threads. |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class ExitDuringStepTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| @skipIfFreeBSD # llvm.org/pr21411: test is hanging |
| def test(self): |
| """Test thread exit during step handling.""" |
| self.build(dictionary=self.getBuildFlags()) |
| self.exit_during_step_base( |
| "thread step-inst -m all-threads", |
| 'stop reason = instruction step', |
| True) |
| |
| @skipIfFreeBSD # llvm.org/pr21411: test is hanging |
| def test_step_over(self): |
| """Test thread exit during step-over handling.""" |
| self.build(dictionary=self.getBuildFlags()) |
| self.exit_during_step_base( |
| "thread step-over -m all-threads", |
| 'stop reason = step over', |
| False) |
| |
| @skipIfFreeBSD # llvm.org/pr21411: test is hanging |
| def test_step_in(self): |
| """Test thread exit during step-in handling.""" |
| self.build(dictionary=self.getBuildFlags()) |
| self.exit_during_step_base( |
| "thread step-in -m all-threads", |
| 'stop reason = step in', |
| False) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line numbers to break and continue. |
| self.breakpoint = line_number('main.cpp', '// Set breakpoint here') |
| self.continuepoint = line_number('main.cpp', '// Continue from here') |
| |
| def exit_during_step_base(self, step_cmd, step_stop_reason, by_instruction): |
| """Test thread exit during step handling.""" |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| # This should create a breakpoint in the main thread. |
| self.bp_num = lldbutil.run_break_set_by_file_and_line( |
| self, "main.cpp", self.breakpoint, num_expected_locations=1) |
| |
| # The breakpoint list should show 1 location. |
| self.expect( |
| "breakpoint list -f", |
| "Breakpoint location shown correctly", |
| substrs=[ |
| "1: file = 'main.cpp', line = %d, exact_match = 0, locations = 1" % |
| self.breakpoint]) |
| |
| # Run the program. |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # The stop reason of the thread should be breakpoint. |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs=['stopped', |
| 'stop reason = breakpoint']) |
| |
| # Get the target process |
| target = self.dbg.GetSelectedTarget() |
| process = target.GetProcess() |
| |
| num_threads = process.GetNumThreads() |
| # Make sure we see all three threads |
| self.assertGreaterEqual( |
| num_threads, |
| 3, |
| 'Number of expected threads and actual threads do not match.') |
| |
| stepping_thread = lldbutil.get_one_thread_stopped_at_breakpoint_id( |
| process, self.bp_num) |
| self.assertIsNotNone( |
| stepping_thread, |
| "Could not find a thread stopped at the breakpoint") |
| |
| current_line = self.breakpoint |
| stepping_frame = stepping_thread.GetFrameAtIndex(0) |
| self.assertEqual( |
| current_line, |
| stepping_frame.GetLineEntry().GetLine(), |
| "Starting line for stepping doesn't match breakpoint line.") |
| |
| # Keep stepping until we've reached our designated continue point |
| while current_line != self.continuepoint: |
| # Since we're using the command interpreter to issue the thread command |
| # (on the selected thread) we need to ensure the selected thread is the |
| # stepping thread. |
| if stepping_thread != process.GetSelectedThread(): |
| process.SetSelectedThread(stepping_thread) |
| |
| self.runCmd(step_cmd) |
| |
| frame = stepping_thread.GetFrameAtIndex(0) |
| |
| current_line = frame.GetLineEntry().GetLine() |
| |
| if by_instruction and current_line == 0: |
| continue |
| |
| self.assertGreaterEqual( |
| current_line, |
| self.breakpoint, |
| "Stepped to unexpected line, " + |
| str(current_line)) |
| self.assertLessEqual( |
| current_line, |
| self.continuepoint, |
| "Stepped to unexpected line, " + |
| str(current_line)) |
| |
| self.runCmd("thread list") |
| |
| # Update the number of threads |
| new_num_threads = process.GetNumThreads() |
| |
| # Check to see that we reduced the number of threads as expected |
| self.assertEqual( |
| new_num_threads, |
| num_threads - 1, |
| 'Number of threads did not reduce by 1 after thread exit.') |
| |
| self.expect("thread list", 'Process state is stopped due to step', |
| substrs=['stopped', |
| step_stop_reason]) |
| |
| # Run to completion |
| self.runCmd("continue") |
| |
| # At this point, the inferior process should have exited. |
| self.assertEqual(process.GetState(), lldb.eStateExited, PROCESS_EXITED) |
