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"""
Test 'watchpoint command'.
"""
import os
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class WatchpointPythonCommandTestCase(TestBase):
NO_DEBUG_INFO_TESTCASE = True
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.")
self.second_line = line_number(self.source, "// Set another breakpoint here.")
# 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 = self.testMethodName
self.d = {"CXX_SOURCES": self.source, "EXE": self.exe_name}
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 -s python 1 -o 'frame.EvaluateExpression(\"cookie = 777\")'"
)
# List the watchpoint command we just added.
self.expect(
"watchpoint command list 1",
substrs=["frame.EvaluateExpression", "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"],
)
def test_continue_in_watchpoint_command(self):
"""Test continue in a 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),
],
)
cmd_script_file = os.path.join(self.getSourceDir(), "watchpoint_command.py")
self.runCmd("command script import '%s'" % (cmd_script_file))
self.runCmd("watchpoint command add -F watchpoint_command.watchpoint_command")
# List the watchpoint command we just added.
self.expect(
"watchpoint command list 1",
substrs=["watchpoint_command.watchpoint_command"],
)
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"],
)
# We should have hit the watchpoint once, set cookie to 888, since the
# user callback returned True.
self.expect(
"frame variable --show-globals cookie",
substrs=["(int32_t)", "cookie = 888"],
)
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"],
)
# We should have hit the watchpoint a second time, set cookie to 666,
# even if the user callback didn't return anything and then continue.
self.expect(
"frame variable --show-globals cookie",
substrs=["(int32_t)", "cookie = 666"],
)
# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
lldbutil.run_break_set_by_file_and_line(
self, None, self.second_line, num_expected_locations=1
)
self.runCmd("process continue")
self.expect(
"thread backtrace",
STOPPED_DUE_TO_BREAKPOINT,
substrs=["stop reason = breakpoint"],
)
# We should have hit the watchpoint once, set cookie to 888, then continued to the
# second hit and set it to 999
self.expect(
"frame variable --show-globals cookie",
substrs=["(int32_t)", "cookie = 999"],
)
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