2c2eb5e670
The new FreeBSDRemote plugin has reached feature parity on i386 and amd64 targets. Use it by default on these architectures, while allowing the use of the legacy plugin via FREEBSD_LEGACY_PLUGIN envvar. Revisit the method of switching plugins. Apparently, the return value of PlatformFreeBSD::CanDebugProcess() is what really decides whether the legacy or the new plugin is used. Update the test status. Reenable the tests that were previously disabled on FreeBSD and do not cause hangs or are irrelevant to FreeBSD. Mark all tests that fail reliably as expectedFailure. For now, tests that are flaky (i.e. produce unstable results) are left enabled and cause unpredictable test failures. Differential Revision: https://reviews.llvm.org/D90757
148 lines
5.1 KiB
Python
148 lines
5.1 KiB
Python
"""
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Test number of threads.
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class ExitDuringStepTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
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def test(self):
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"""Test thread exit during step handling."""
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self.build(dictionary=self.getBuildFlags())
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self.exit_during_step_base(
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"thread step-inst -m all-threads",
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'stop reason = instruction step',
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True)
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@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
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def test_step_over(self):
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"""Test thread exit during step-over handling."""
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self.build(dictionary=self.getBuildFlags())
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self.exit_during_step_base(
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"thread step-over -m all-threads",
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'stop reason = step over',
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False)
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@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
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def test_step_in(self):
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"""Test thread exit during step-in handling."""
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self.build(dictionary=self.getBuildFlags())
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self.exit_during_step_base(
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"thread step-in -m all-threads",
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'stop reason = step in',
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False)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line numbers to break and continue.
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self.breakpoint = line_number('main.cpp', '// Set breakpoint here')
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self.continuepoint = line_number('main.cpp', '// Continue from here')
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def exit_during_step_base(self, step_cmd, step_stop_reason, by_instruction):
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"""Test thread exit during step handling."""
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# This should create a breakpoint in the main thread.
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self.bp_num = lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.breakpoint, num_expected_locations=1)
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# The breakpoint list should show 1 location.
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self.expect(
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"breakpoint list -f",
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"Breakpoint location shown correctly",
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substrs=[
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"1: file = 'main.cpp', line = %d, exact_match = 0, locations = 1" %
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self.breakpoint])
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# Run the program.
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'stop reason = breakpoint'])
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# Get the target process
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target = self.dbg.GetSelectedTarget()
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process = target.GetProcess()
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num_threads = process.GetNumThreads()
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# Make sure we see all three threads
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self.assertGreaterEqual(
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num_threads,
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3,
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'Number of expected threads and actual threads do not match.')
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stepping_thread = lldbutil.get_one_thread_stopped_at_breakpoint_id(
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process, self.bp_num)
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self.assertIsNotNone(
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stepping_thread,
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"Could not find a thread stopped at the breakpoint")
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current_line = self.breakpoint
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stepping_frame = stepping_thread.GetFrameAtIndex(0)
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self.assertEqual(
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current_line,
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stepping_frame.GetLineEntry().GetLine(),
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"Starting line for stepping doesn't match breakpoint line.")
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# Keep stepping until we've reached our designated continue point
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while current_line != self.continuepoint:
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# Since we're using the command interpreter to issue the thread command
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# (on the selected thread) we need to ensure the selected thread is the
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# stepping thread.
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if stepping_thread != process.GetSelectedThread():
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process.SetSelectedThread(stepping_thread)
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self.runCmd(step_cmd)
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frame = stepping_thread.GetFrameAtIndex(0)
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current_line = frame.GetLineEntry().GetLine()
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if by_instruction and current_line == 0:
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continue
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self.assertGreaterEqual(
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current_line,
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self.breakpoint,
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"Stepped to unexpected line, " +
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str(current_line))
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self.assertLessEqual(
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current_line,
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self.continuepoint,
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"Stepped to unexpected line, " +
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str(current_line))
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self.runCmd("thread list")
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# Update the number of threads
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new_num_threads = process.GetNumThreads()
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# Check to see that we reduced the number of threads as expected
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self.assertEqual(
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new_num_threads,
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num_threads - 1,
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'Number of threads did not reduce by 1 after thread exit.')
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self.expect("thread list", 'Process state is stopped due to step',
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substrs=['stopped',
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step_stop_reason])
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# Run to completion
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self.runCmd("continue")
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# At this point, the inferior process should have exited.
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self.assertEqual(process.GetState(), lldb.eStateExited, PROCESS_EXITED)
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