129 lines
4.6 KiB
Python
129 lines
4.6 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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@skipIfFreeBSD # Hangs. May be the same as Linux issue llvm.org/pr16229 but
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# not yet investigated. Revisit once required functionality
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# is implemented for FreeBSD.
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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_with_popen(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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self.create_after_attach(use_fork=False)
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@skipIfFreeBSD # Hangs. Revisit once required functionality is implemented
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# for FreeBSD.
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@skipIfRemote
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@skipIfWindows # Windows doesn't have fork.
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@skipIfiOSSimulator
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@expectedFailureNetBSD
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def test_create_after_attach_with_fork(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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self.create_after_attach(use_fork=True)
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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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def create_after_attach(self, use_fork):
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"""Test thread creation after process attach."""
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exe = self.getBuildArtifact("a.out")
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# Spawn a new process
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if use_fork:
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pid = self.forkSubprocess(exe)
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else:
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popen = self.spawnSubprocess(exe)
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pid = popen.pid
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self.addTearDownHook(self.cleanupSubprocesses)
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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.assertTrue(
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process.GetState() == lldb.eStateExited,
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PROCESS_EXITED)
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