1""" 2Test thread creation after process attach. 3""" 4 5 6 7import lldb 8from lldbsuite.test.decorators import * 9from lldbsuite.test.lldbtest import * 10from lldbsuite.test import lldbutil 11 12 13class CreateAfterAttachTestCase(TestBase): 14 15 mydir = TestBase.compute_mydir(__file__) 16 17 @skipIfFreeBSD # Hangs. May be the same as Linux issue llvm.org/pr16229 but 18 # not yet investigated. Revisit once required functionality 19 # is implemented for FreeBSD. 20 # Occasionally hangs on Windows, may be same as other issues. 21 @skipIfWindows 22 @skipIfiOSSimulator 23 @expectedFailureNetBSD 24 def test_create_after_attach_with_popen(self): 25 """Test thread creation after process attach.""" 26 self.build(dictionary=self.getBuildFlags(use_cpp11=False)) 27 self.create_after_attach(use_fork=False) 28 29 @skipIfFreeBSD # Hangs. Revisit once required functionality is implemented 30 # for FreeBSD. 31 @skipIfRemote 32 @skipIfWindows # Windows doesn't have fork. 33 @skipIfiOSSimulator 34 @expectedFailureNetBSD 35 def test_create_after_attach_with_fork(self): 36 """Test thread creation after process attach.""" 37 self.build(dictionary=self.getBuildFlags(use_cpp11=False)) 38 self.create_after_attach(use_fork=True) 39 40 def setUp(self): 41 # Call super's setUp(). 42 TestBase.setUp(self) 43 # Find the line numbers for our breakpoints. 44 self.break_1 = line_number('main.cpp', '// Set first breakpoint here') 45 self.break_2 = line_number('main.cpp', '// Set second breakpoint here') 46 self.break_3 = line_number('main.cpp', '// Set third breakpoint here') 47 48 def create_after_attach(self, use_fork): 49 """Test thread creation after process attach.""" 50 51 exe = self.getBuildArtifact("a.out") 52 53 # Spawn a new process 54 if use_fork: 55 pid = self.forkSubprocess(exe) 56 else: 57 popen = self.spawnSubprocess(exe) 58 pid = popen.pid 59 self.addTearDownHook(self.cleanupSubprocesses) 60 61 # Attach to the spawned process 62 self.runCmd("process attach -p " + str(pid)) 63 64 target = self.dbg.GetSelectedTarget() 65 66 process = target.GetProcess() 67 self.assertTrue(process, PROCESS_IS_VALID) 68 69 # This should create a breakpoint in the main thread. 70 lldbutil.run_break_set_by_file_and_line( 71 self, "main.cpp", self.break_1, num_expected_locations=1) 72 73 # This should create a breakpoint in the second child thread. 74 lldbutil.run_break_set_by_file_and_line( 75 self, "main.cpp", self.break_2, num_expected_locations=1) 76 77 # This should create a breakpoint in the first child thread. 78 lldbutil.run_break_set_by_file_and_line( 79 self, "main.cpp", self.break_3, num_expected_locations=1) 80 81 # Note: With std::thread, we cannot rely on particular thread numbers. Using 82 # std::thread may cause the program to spin up a thread pool (and it does on 83 # Windows), so the thread numbers are non-deterministic. 84 85 # Run to the first breakpoint 86 self.runCmd("continue") 87 88 # The stop reason of the thread should be breakpoint. 89 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 90 substrs=['stopped', 91 '* thread #', 92 'main', 93 'stop reason = breakpoint']) 94 95 # Change a variable to escape the loop 96 self.runCmd("expression main_thread_continue = 1") 97 98 # Run to the second breakpoint 99 self.runCmd("continue") 100 101 # The stop reason of the thread should be breakpoint. 102 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 103 substrs=['stopped', 104 '* thread #', 105 'thread_2_func', 106 'stop reason = breakpoint']) 107 108 # Change a variable to escape the loop 109 self.runCmd("expression child_thread_continue = 1") 110 111 # Run to the third breakpoint 112 self.runCmd("continue") 113 114 # The stop reason of the thread should be breakpoint. 115 # Thread 3 may or may not have already exited. 116 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 117 substrs=['stopped', 118 '* thread #', 119 'thread_1_func', 120 'stop reason = breakpoint']) 121 122 # Run to completion 123 self.runCmd("continue") 124 125 # At this point, the inferior process should have exited. 126 self.assertTrue( 127 process.GetState() == lldb.eStateExited, 128 PROCESS_EXITED) 129