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"""
Test my first lldb watchpoint.
"""
from __future__ import print_function
import os
import time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class HelloWatchpointTestCase(TestBase):
def getCategories(self):
return ['basic_process']
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Our simple source filename.
self.source = 'main.c'
# 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.')
self.exe_name = 'a.out'
self.d = {'C_SOURCES': self.source, 'EXE': self.exe_name}
# Watchpoints not supported
@expectedFailureAndroid(archs=['arm', 'aarch64'])
@expectedFailureAll(
oslist=["windows"],
bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows")
def test_hello_watchpoint_using_watchpoint_set(self):
"""Test a simple sequence of watchpoint creation and watchpoint hit."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
exe = os.path.join(os.getcwd(), 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'.
# There should be only one watchpoint hit (see main.c).
self.expect(
"watchpoint set variable -w write global",
WATCHPOINT_CREATED,
substrs=[
'Watchpoint created',
'size = 4',
'type = w',
'%s:%d' %
(self.source,
self.decl)])
# 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), but
# only once. The stop reason of the thread should be watchpoint.
self.expect("thread list", STOPPED_DUE_TO_WATCHPOINT,
substrs=['stopped',
'stop reason = watchpoint'])
self.runCmd("process continue")
# Don't expect the read of 'global' to trigger a stop exception.
process = self.dbg.GetSelectedTarget().GetProcess()
if process.GetState() == lldb.eStateStopped:
self.assertFalse(
lldbutil.get_stopped_thread(
process, lldb.eStopReasonWatchpoint))
# Use the '-v' option to do verbose listing of the watchpoint.
# The hit count should now be 1.
self.expect("watchpoint list -v",
substrs=['hit_count = 1'])
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