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
58 lines
2.0 KiB
Python
58 lines
2.0 KiB
Python
"""
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Test that expr will time out and allow other threads to run if it blocks.
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"""
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from __future__ import print_function
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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 ExprDoesntDeadlockTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@add_test_categories(["basic_process"])
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@skipIfReproducer # Timeouts are not currently modeled.
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def test_with_run_command(self):
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"""Test that expr will time out and allow other threads to run if it blocks."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Now create a breakpoint at source line before call_me_to_get_lock
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# gets called.
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main_file_spec = lldb.SBFileSpec("locking.cpp")
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breakpoint = target.BreakpointCreateBySourceRegex(
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'Break here', main_file_spec)
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if self.TraceOn():
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print("breakpoint:", breakpoint)
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self.assertTrue(breakpoint and
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breakpoint.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple(
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None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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# Frame #0 should be on self.line1 and the break condition should hold.
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from lldbsuite.test.lldbutil import get_stopped_thread
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thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertTrue(
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thread.IsValid(),
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"There should be a thread stopped due to breakpoint condition")
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frame0 = thread.GetFrameAtIndex(0)
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var = frame0.EvaluateExpression("call_me_to_get_lock(get_int())")
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self.assertTrue(var.IsValid())
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self.assertEqual(var.GetValueAsSigned(0), 567)
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