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| """
Test 'watchpoint command'.
"""
from __future__ import print_function
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class WatchpointLLDBCommandTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Our simple source filename.
self.source = 'main.cpp'
# Find the line number to break inside main().
self.line = line_number(
self.source, '// Set break point at this line.')
# And the watchpoint variable declaration line number.
self.decl = line_number(self.source,
'// Watchpoint variable declaration.')
# Build dictionary to have unique executable names for each test
# method.
self.exe_name = 'a%d.out' % self.test_number
self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
@expectedFailureAll(
oslist=["linux"],
archs=["aarch64"],
triple=no_match(".*-android"),
bugnumber="llvm.org/pr27710") # work on android
@expectedFailureNetBSD
def test_watchpoint_command(self):
"""Test 'watchpoint command'."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
exe = self.getBuildArtifact(self.exe_name)
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
lldbutil.run_break_set_by_file_and_line(
self, None, self.line, num_expected_locations=1)
# Run the program.
self.runCmd("run", RUN_SUCCEEDED)
# We should be stopped again due to the breakpoint.
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
# Now let's set a write-type watchpoint for 'global'.
self.expect(
"watchpoint set variable -w write global",
WATCHPOINT_CREATED,
substrs=[
'Watchpoint created',
'size = 4',
'type = w',
'%s:%d' %
(self.source,
self.decl)])
self.runCmd('watchpoint command add 1 -o "expr -- cookie = 777"')
# List the watchpoint command we just added.
self.expect("watchpoint command list 1",
substrs=['expr -- cookie = 777'])
# Use the '-v' option to do verbose listing of the watchpoint.
# The hit count should be 0 initially.
self.expect("watchpoint list -v",
substrs=['hit_count = 0'])
self.runCmd("process continue")
# We should be stopped again due to the watchpoint (write type).
# The stop reason of the thread should be watchpoint.
self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
substrs=['stop reason = watchpoint'])
# Check that the watchpoint snapshoting mechanism is working.
self.expect("watchpoint list -v",
substrs=['old value:', ' = 0',
'new value:', ' = 1'])
# The watchpoint command "forced" our global variable 'cookie' to
# become 777.
self.expect("frame variable --show-globals cookie",
substrs=['(int32_t)', 'cookie = 777'])
@expectedFailureAll(
oslist=["linux"],
archs=["aarch64"],
triple=no_match(".*-android"),
bugnumber="llvm.org/pr27710") # work on android
def test_watchpoint_command_can_disable_a_watchpoint(self):
"""Test that 'watchpoint command' action can disable a watchpoint after it is triggered."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
exe = self.getBuildArtifact(self.exe_name)
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
lldbutil.run_break_set_by_file_and_line(
self, None, self.line, num_expected_locations=1)
# Run the program.
self.runCmd("run", RUN_SUCCEEDED)
# We should be stopped again due to the breakpoint.
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
# Now let's set a write-type watchpoint for 'global'.
self.expect(
"watchpoint set variable -w write global",
WATCHPOINT_CREATED,
substrs=[
'Watchpoint created',
'size = 4',
'type = w',
'%s:%d' %
(self.source,
self.decl)])
self.runCmd('watchpoint command add 1 -o "watchpoint disable 1"')
# List the watchpoint command we just added.
self.expect("watchpoint command list 1",
substrs=['watchpoint disable 1'])
# Use the '-v' option to do verbose listing of the watchpoint.
# The hit count should be 0 initially.
self.expect("watchpoint list -v",
substrs=['hit_count = 0'])
self.runCmd("process continue")
# We should be stopped again due to the watchpoint (write type).
# The stop reason of the thread should be watchpoint.
self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
substrs=['stop reason = watchpoint'])
# Check that the watchpoint has been disabled.
self.expect("watchpoint list -v",
substrs=['disabled'])
self.runCmd("process continue")
# There should be no more watchpoint hit and the process status should
# be 'exited'.
self.expect("process status",
substrs=['exited'])
|