159 lines
5.7 KiB
Python
159 lines
5.7 KiB
Python
"""
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Test 'watchpoint command'.
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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 WatchpointLLDBCommandTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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NO_DEBUG_INFO_TESTCASE = 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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# Our simple source filename.
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self.source = 'main.cpp'
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# Find the line number to break inside main().
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self.line = line_number(
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self.source, '// Set break point at this line.')
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# And the watchpoint variable declaration line number.
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self.decl = line_number(self.source,
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'// Watchpoint variable declaration.')
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# Build dictionary to have unique executable names for each test
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# method.
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self.exe_name = 'a%d.out' % self.test_number
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self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
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def test_watchpoint_command(self):
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"""Test 'watchpoint command'."""
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self.build(dictionary=self.d)
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self.setTearDownCleanup(dictionary=self.d)
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exe = self.getBuildArtifact(self.exe_name)
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
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lldbutil.run_break_set_by_file_and_line(
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self, None, self.line, num_expected_locations=1)
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# Run the program.
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self.runCmd("run", RUN_SUCCEEDED)
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# We should be stopped again due to the breakpoint.
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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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'stop reason = breakpoint'])
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# Now let's set a write-type watchpoint for 'global'.
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self.expect(
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"watchpoint set variable -w write global",
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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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'%s:%d' %
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(self.source,
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self.decl)])
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self.runCmd('watchpoint command add 1 -o "expr -- cookie = 777"')
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# List the watchpoint command we just added.
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self.expect("watchpoint command list 1",
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substrs=['expr -- cookie = 777'])
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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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# We should be stopped again due to the watchpoint (write type).
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# The stop reason of the thread should be watchpoint.
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self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
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substrs=['stop reason = watchpoint'])
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# Check that the watchpoint snapshoting mechanism is working.
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self.expect(
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"watchpoint list -v",
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substrs=[
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'old value: 0', 'new value: 1', 'hit_count = 1',
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'ignore_count = 0'
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])
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# The watchpoint command "forced" our global variable 'cookie' to
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# become 777.
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self.expect("frame variable --show-globals cookie",
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substrs=['(int32_t)', 'cookie = 777'])
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def test_watchpoint_command_can_disable_a_watchpoint(self):
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"""Test that 'watchpoint command' action can disable a watchpoint after it is triggered."""
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self.build(dictionary=self.d)
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self.setTearDownCleanup(dictionary=self.d)
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exe = self.getBuildArtifact(self.exe_name)
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
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lldbutil.run_break_set_by_file_and_line(
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self, None, self.line, num_expected_locations=1)
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# Run the program.
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self.runCmd("run", RUN_SUCCEEDED)
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# We should be stopped again due to the breakpoint.
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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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'stop reason = breakpoint'])
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# Now let's set a write-type watchpoint for 'global'.
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self.expect(
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"watchpoint set variable -w write global",
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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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'%s:%d' %
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(self.source,
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self.decl)])
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self.runCmd('watchpoint command add 1 -o "watchpoint disable 1"')
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# List the watchpoint command we just added.
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self.expect("watchpoint command list 1",
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substrs=['watchpoint disable 1'])
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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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# We should be stopped again due to the watchpoint (write type).
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# The stop reason of the thread should be watchpoint.
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self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
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substrs=['stop reason = watchpoint'])
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# Check that the watchpoint has been disabled.
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self.expect("watchpoint list -v",
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substrs=['disabled'])
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self.runCmd("process continue")
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# There should be no more watchpoint hit and the process status should
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# be 'exited'.
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self.expect("process status",
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substrs=['exited'])
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