TestWatchLocationWithWatchSet.py [plain text]
"""
Test lldb watchpoint that uses 'watchpoint set -w write -x size' to watch a pointed location with size.
"""
import os, time
import unittest2
import lldb
from lldbtest import *
class WatchLocationUsingWatchpointSetTestCase(TestBase):
mydir = os.path.join("functionalities", "watchpoint", "watchpoint_set_command")
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
@dsym_test
def test_watchlocation_with_dsym_using_watchpoint_set(self):
"""Test watching a location with 'watchpoint set expression -w write -x size' option."""
self.buildDsym(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
self.watchlocation_using_watchpoint_set()
@dwarf_test
def test_watchlocation_with_dwarf_using_watchpoint_set(self):
"""Test watching a location with 'watchpoint set expression -w write -x size' option."""
self.buildDwarf(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
self.watchlocation_using_watchpoint_set()
def setUp(self):
TestBase.setUp(self)
self.source = 'main.cpp'
self.line = line_number(self.source, '// Set break point at this line.')
self.violating_func = "do_bad_thing_with_location";
self.exe_name = self.testMethodName
self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
def watchlocation_using_watchpoint_set(self):
"""Test watching a location with '-x size' option."""
exe = os.path.join(os.getcwd(), self.exe_name)
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
self.expect("breakpoint set -l %d" % self.line, BREAKPOINT_CREATED,
startstr = "Breakpoint created: 1: file ='%s', line = %d, locations = 1" %
(self.source, self.line))
self.runCmd("run", RUN_SUCCEEDED)
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
self.expect("watchpoint set expression -w write -x 1 -- g_char_ptr + 7", WATCHPOINT_CREATED,
substrs = ['Watchpoint created', 'size = 1', 'type = w'])
self.runCmd("expr unsigned val = g_char_ptr[7]; val")
self.expect(self.res.GetOutput().splitlines()[0], exe=False,
endstr = ' = 0')
self.expect("watchpoint list -v",
substrs = ['hit_count = 0'])
self.runCmd("process continue")
self.expect("thread list", STOPPED_DUE_TO_WATCHPOINT,
substrs = ['stopped',
'stop reason = watchpoint',
self.violating_func])
self.switch_to_thread_with_stop_reason(lldb.eStopReasonWatchpoint)
self.runCmd("thread backtrace")
self.runCmd("expr unsigned val = g_char_ptr[7]; val")
self.expect(self.res.GetOutput().splitlines()[0], exe=False,
endstr = ' = 99')
self.expect("watchpoint list -v",
substrs = ['hit_count = 1'])
self.runCmd("thread backtrace all")
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()