109 lines
4.0 KiB
Python
109 lines
4.0 KiB
Python
"""
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Test that lldb watchpoint works for multiple threads.
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"""
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from __future__ import print_function
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import re
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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 WatchpointForMultipleThreadsTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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NO_DEBUG_INFO_TESTCASE = True
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main_spec = lldb.SBFileSpec("main.cpp", False)
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def test_watchpoint_before_thread_start(self):
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"""Test that we can hit a watchpoint we set before starting another thread"""
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self.do_watchpoint_test("Before running the thread")
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def test_watchpoint_after_thread_start(self):
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"""Test that we can hit a watchpoint we set after starting another thread"""
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self.do_watchpoint_test("After running the thread")
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def do_watchpoint_test(self, line):
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self.build()
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lldbutil.run_to_source_breakpoint(self, line, self.main_spec)
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# Now let's set a write-type watchpoint for variable 'g_val'.
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self.expect(
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"watchpoint set variable -w write g_val",
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WATCHPOINT_CREATED,
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substrs=[
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'Watchpoint created',
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'size = 4',
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'type = w'])
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# Use the '-v' option to do verbose listing of the watchpoint.
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# The hit count should be 0 initially.
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self.expect("watchpoint list -v",
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substrs=['hit_count = 0'])
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self.runCmd("process continue")
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self.runCmd("thread list")
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if "stop reason = watchpoint" in self.res.GetOutput():
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# Good, we verified that the watchpoint works!
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self.runCmd("thread backtrace all")
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else:
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self.fail("The stop reason should be either break or watchpoint")
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# Use the '-v' option to do verbose listing of the watchpoint.
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# The hit count should now be 1.
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self.expect("watchpoint list -v",
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substrs=['hit_count = 1'])
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def test_watchpoint_multiple_threads_wp_set_and_then_delete(self):
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"""Test that lldb watchpoint works for multiple threads, and after the watchpoint is deleted, the watchpoint event should no longer fires."""
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self.build()
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self.setTearDownCleanup()
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lldbutil.run_to_source_breakpoint(self, "After running the thread", self.main_spec)
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# Now let's set a write-type watchpoint for variable 'g_val'.
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self.expect(
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"watchpoint set variable -w write g_val",
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WATCHPOINT_CREATED,
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substrs=[
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'Watchpoint created',
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'size = 4',
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'type = w'])
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# Use the '-v' option to do verbose listing of the watchpoint.
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# The hit count should be 0 initially.
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self.expect("watchpoint list -v",
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substrs=['hit_count = 0'])
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watchpoint_stops = 0
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while True:
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self.runCmd("process continue")
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self.runCmd("process status")
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if re.search("Process .* exited", self.res.GetOutput()):
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# Great, we are done with this test!
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break
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self.runCmd("thread list")
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if "stop reason = watchpoint" in self.res.GetOutput():
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self.runCmd("thread backtrace all")
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watchpoint_stops += 1
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if watchpoint_stops > 1:
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self.fail(
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"Watchpoint hits not supposed to exceed 1 by design!")
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# Good, we verified that the watchpoint works! Now delete the
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# watchpoint.
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if self.TraceOn():
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print(
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"watchpoint_stops=%d at the moment we delete the watchpoint" %
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watchpoint_stops)
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self.runCmd("watchpoint delete 1")
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self.expect("watchpoint list -v",
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substrs=['No watchpoints currently set.'])
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continue
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else:
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self.fail("The stop reason should be either break or watchpoint")
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