147 lines
6.2 KiB
Python
147 lines
6.2 KiB
Python
"""
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Test stepping out from a function in a multi-threaded program.
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"""
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import os, time
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import unittest2
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import lldb
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from lldbtest import *
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import lldbutil
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class ThreadStepOutTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@dsym_test
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def test_step_single_thread_with_dsym(self):
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"""Test thread step out on one thread via command interpreter. """
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self.buildDsym(dictionary=self.getBuildFlags())
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self.step_out_test(self.step_out_single_thread_with_cmd)
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@expectedFailureFreeBSD("llvm.org/pr18066") # inferior does not exit
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@dwarf_test
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def test_step_single_thread_with_dwarf(self):
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"""Test thread step out on one thread via command interpreter. """
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self.buildDwarf(dictionary=self.getBuildFlags())
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self.step_out_test(self.step_out_single_thread_with_cmd)
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@dsym_test
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def test_step_all_threads_with_dsym(self):
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"""Test thread step out on all threads via command interpreter. """
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self.buildDsym(dictionary=self.getBuildFlags())
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self.step_out_test(self.step_out_all_threads_with_cmd)
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@expectedFailureFreeBSD("llvm.org/pr19347") # 2nd thread stops at breakpoint
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@dwarf_test
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def test_step_all_threads_with_dwarf(self):
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"""Test thread step out on all threads via command interpreter. """
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self.buildDwarf(dictionary=self.getBuildFlags())
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self.step_out_test(self.step_out_all_threads_with_cmd)
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@dsym_test
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def test_python_with_dsym(self):
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"""Test thread step out on one threads via Python API (dsym)."""
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self.buildDsym(dictionary=self.getBuildFlags())
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self.step_out_test(self.step_out_with_python)
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@expectedFailureFreeBSD("llvm.org/pr19347")
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@dwarf_test
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def test_python_with_dwarf(self):
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"""Test thread step out on one thread via Python API (dwarf)."""
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self.buildDwarf(dictionary=self.getBuildFlags())
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self.step_out_test(self.step_out_with_python)
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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 number for our breakpoint.
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self.breakpoint = line_number('main.cpp', '// Set breakpoint here')
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if "gcc" in self.getCompiler() or self.isIntelCompiler():
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self.step_out_destination = line_number('main.cpp', '// Expect to stop here after step-out (icc and gcc)')
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else:
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self.step_out_destination = line_number('main.cpp', '// Expect to stop here after step-out (clang)')
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def step_out_single_thread_with_cmd(self):
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self.step_out_with_cmd("this-thread")
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self.expect("thread backtrace all", "Thread location after step out is correct",
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substrs = ["main.cpp:%d" % self.step_out_destination,
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"main.cpp:%d" % self.breakpoint])
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def step_out_all_threads_with_cmd(self):
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self.step_out_with_cmd("all-threads")
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self.expect("thread backtrace all", "Thread location after step out is correct",
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substrs = ["main.cpp:%d" % self.step_out_destination])
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def step_out_with_cmd(self, run_mode):
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self.runCmd("thread select %d" % self.step_out_thread.GetIndexID())
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self.runCmd("thread step-out -m %s" % run_mode)
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self.expect("process status", "Expected stop reason to be step-out",
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substrs = ["stop reason = step out"])
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self.expect("thread list", "Selected thread did not change during step-out",
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substrs = ["* thread #%d" % self.step_out_thread.GetIndexID()])
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def step_out_with_python(self):
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self.step_out_thread.StepOut()
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reason = self.step_out_thread.GetStopReason()
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self.assertEqual(lldb.eStopReasonPlanComplete, reason,
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"Expected thread stop reason 'plancomplete', but got '%s'" % lldbutil.stop_reason_to_str(reason))
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# Verify location after stepping out
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frame = self.step_out_thread.GetFrameAtIndex(0)
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desc = lldbutil.get_description(frame.GetLineEntry())
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expect = "main.cpp:%d" % self.step_out_destination
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self.assertTrue(expect in desc, "Expected %s but thread stopped at %s" % (expect, desc))
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def step_out_test(self, step_out_func):
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"""Test single thread step out of a function."""
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exe = os.path.join(os.getcwd(), "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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lldbutil.run_break_set_by_file_and_line (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("breakpoint list -f", "Breakpoint location shown correctly",
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substrs = ["1: file = 'main.cpp', line = %d, locations = 1" % self.breakpoint])
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# Run the program.
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self.runCmd("run", RUN_SUCCEEDED)
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# Get the target process
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self.inferior_target = self.dbg.GetSelectedTarget()
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self.inferior_process = self.inferior_target.GetProcess()
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# Get the number of threads, ensure we see all three.
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num_threads = self.inferior_process.GetNumThreads()
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self.assertEqual(num_threads, 3, 'Number of expected threads and actual threads do not match.')
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(breakpoint_threads, other_threads) = ([], [])
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lldbutil.sort_stopped_threads(self.inferior_process,
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breakpoint_threads=breakpoint_threads,
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other_threads=other_threads)
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while len(breakpoint_threads) < 2:
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self.runCmd("thread continue %s" % " ".join([str(x.GetIndexID()) for x in other_threads]))
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lldbutil.sort_stopped_threads(self.inferior_process,
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breakpoint_threads=breakpoint_threads,
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other_threads=other_threads)
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self.step_out_thread = breakpoint_threads[0]
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# Step out of thread stopped at breakpoint
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step_out_func()
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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(self.inferior_process.GetState() == lldb.eStateExited, PROCESS_EXITED)
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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