15f067f1c7
Use realpath() when spawning the executable create_after_attach to workaround a FreeBSD plugin (and possibly others) problem. If the executable is started via a path containing a symlink, it is added to the module list twice -- via the real and apparent path. This in turn cases the requested breakpoint to resolve twice. Use realpath() for main program path in lldb-vscode breakpoint tests to workaround a similar problem. If the passed path does not match the realpath, lldb-vscode does not report the breakpoints as verified and causes tests to fail. Since the underlying problems are non-trivial to fix and the purpose of these tests is not to reproduce symlink problems, let's apply trivial workarounds to make them pass. Differential Revision: https://reviews.llvm.org/D97230
107 lines
3.7 KiB
Python
107 lines
3.7 KiB
Python
"""
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Test thread creation after process attach.
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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 CreateAfterAttachTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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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 for our breakpoints.
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self.break_1 = line_number('main.cpp', '// Set first breakpoint here')
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self.break_2 = line_number('main.cpp', '// Set second breakpoint here')
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self.break_3 = line_number('main.cpp', '// Set third breakpoint here')
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# Occasionally hangs on Windows, may be same as other issues.
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@skipIfWindows
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@skipIfiOSSimulator
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@expectedFailureNetBSD
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def test_create_after_attach(self):
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"""Test thread creation after process attach."""
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self.build(dictionary=self.getBuildFlags(use_cpp11=False))
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exe = self.getBuildArtifact("a.out")
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# Spawn a new process
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# use realpath to workaround llvm.org/pr48376
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popen = self.spawnSubprocess(os.path.realpath(exe))
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pid = popen.pid
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# Attach to the spawned process
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self.runCmd("process attach -p " + str(pid))
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target = self.dbg.GetSelectedTarget()
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process = target.GetProcess()
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self.assertTrue(process, PROCESS_IS_VALID)
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# This should create a breakpoint in the main thread.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.break_1, num_expected_locations=1)
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# This should create a breakpoint in the second child thread.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.break_2, num_expected_locations=1)
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# This should create a breakpoint in the first child thread.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.break_3, num_expected_locations=1)
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# Note: With std::thread, we cannot rely on particular thread numbers. Using
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# std::thread may cause the program to spin up a thread pool (and it does on
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# Windows), so the thread numbers are non-deterministic.
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# Run to the first breakpoint
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self.runCmd("continue")
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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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'* thread #',
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'main',
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'stop reason = breakpoint'])
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# Change a variable to escape the loop
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self.runCmd("expression main_thread_continue = 1")
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# Run to the second breakpoint
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self.runCmd("continue")
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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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'* thread #',
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'thread_2_func',
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'stop reason = breakpoint'])
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# Change a variable to escape the loop
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self.runCmd("expression child_thread_continue = 1")
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# Run to the third breakpoint
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self.runCmd("continue")
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# The stop reason of the thread should be breakpoint.
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# Thread 3 may or may not have already exited.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'* thread #',
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'thread_1_func',
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'stop reason = breakpoint'])
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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(
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process.GetState(), lldb.eStateExited,
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PROCESS_EXITED)
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