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"""
Test watchpoint condition API.
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class WatchpointConditionAPITestCase(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 = self.testMethodName
self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
@expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
@expectedFailureAll(oslist=["linux"], archs=["aarch64"], bugnumber="llvm.org/pr27710")
@skipIfWindows # Watchpoints not supported on Windows, and this test hangs
def test_watchpoint_cond_api(self):
"""Test watchpoint condition API."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
exe = os.path.join(os.getcwd(), self.exe_name)
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Now create a breakpoint on main.c.
breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
self.assertTrue(breakpoint and
breakpoint.GetNumLocations() == 1,
VALID_BREAKPOINT)
# Now launch the process, and do not stop at the entry point.
process = target.LaunchSimple (None, None, self.get_process_working_directory())
# We should be stopped due to the breakpoint. Get frame #0.
process = target.GetProcess()
self.assertTrue(process.GetState() == lldb.eStateStopped,
PROCESS_STOPPED)
thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
frame0 = thread.GetFrameAtIndex(0)
# Watch 'global' for write.
value = frame0.FindValue('global', lldb.eValueTypeVariableGlobal)
error = lldb.SBError();
watchpoint = value.Watch(True, False, True, error)
self.assertTrue(value and watchpoint,
"Successfully found the variable and set a watchpoint")
self.DebugSBValue(value)
# Now set the condition as "global==5".
watchpoint.SetCondition('global==5')
self.expect(watchpoint.GetCondition(), exe=False,
startstr = 'global==5')
# Hide stdout if not running with '-t' option.
if not self.TraceOn():
self.HideStdout()
print(watchpoint)
# Continue. Expect the program to stop due to the variable being written to.
process.Continue()
if (self.TraceOn()):
lldbutil.print_stacktraces(process)
thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonWatchpoint)
self.assertTrue(thread, "The thread stopped due to watchpoint")
self.DebugSBValue(value)
# Verify that the condition is met.
self.assertTrue(value.GetValueAsUnsigned() == 5)
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