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"""Test that adding, deleting and modifying watchpoints sends the appropriate events."""
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 TestWatchpointEvents (TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line numbers that we will step to in main:
self.main_source = "main.c"
@add_test_categories(['pyapi'])
@expectedFailureAll(
oslist=["linux"],
archs=["aarch64"],
bugnumber="llvm.org/pr27710")
@expectedFailureAll(
oslist=["windows"],
bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows")
def test_with_python_api(self):
"""Test that adding, deleting and modifying watchpoints sends the appropriate events."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
self.main_source_spec = lldb.SBFileSpec(self.main_source)
break_in_main = target.BreakpointCreateBySourceRegex(
'// Put a breakpoint here.', self.main_source_spec)
self.assertTrue(break_in_main, VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# The stop reason of the thread should be breakpoint.
threads = lldbutil.get_threads_stopped_at_breakpoint(
process, break_in_main)
if len(threads) != 1:
self.fail("Failed to stop at first breakpoint in main.")
thread = threads[0]
frame = thread.GetFrameAtIndex(0)
local_var = frame.FindVariable("local_var")
self.assertTrue(local_var.IsValid())
self.listener = lldb.SBListener("com.lldb.testsuite_listener")
self.target_bcast = target.GetBroadcaster()
self.target_bcast.AddListener(
self.listener, lldb.SBTarget.eBroadcastBitWatchpointChanged)
self.listener.StartListeningForEvents(
self.target_bcast, lldb.SBTarget.eBroadcastBitWatchpointChanged)
error = lldb.SBError()
local_watch = local_var.Watch(True, False, True, error)
if not error.Success():
self.fail(
"Failed to make watchpoint for local_var: %s" %
(error.GetCString()))
self.GetWatchpointEvent(lldb.eWatchpointEventTypeAdded)
# Now change some of the features of this watchpoint and make sure we
# get events:
local_watch.SetEnabled(False)
self.GetWatchpointEvent(lldb.eWatchpointEventTypeDisabled)
local_watch.SetEnabled(True)
self.GetWatchpointEvent(lldb.eWatchpointEventTypeEnabled)
local_watch.SetIgnoreCount(10)
self.GetWatchpointEvent(lldb.eWatchpointEventTypeIgnoreChanged)
condition = "1 == 2"
local_watch.SetCondition(condition)
self.GetWatchpointEvent(lldb.eWatchpointEventTypeConditionChanged)
self.assertTrue(local_watch.GetCondition() == condition,
'make sure watchpoint condition is "' + condition + '"')
def GetWatchpointEvent(self, event_type):
# We added a watchpoint so we should get a watchpoint added event.
event = lldb.SBEvent()
success = self.listener.WaitForEvent(1, event)
self.assertTrue(success, "Successfully got watchpoint event")
self.assertTrue(
lldb.SBWatchpoint.EventIsWatchpointEvent(event),
"Event is a watchpoint event.")
found_type = lldb.SBWatchpoint.GetWatchpointEventTypeFromEvent(event)
self.assertTrue(
found_type == event_type,
"Event is not correct type, expected: %d, found: %d" %
(event_type,
found_type))
# There shouldn't be another event waiting around:
found_event = self.listener.PeekAtNextEventForBroadcasterWithType(
self.target_bcast, lldb.SBTarget.eBroadcastBitBreakpointChanged, event)
if found_event:
print("Found an event I didn't expect: ", event)
self.assertTrue(not found_event, "Only one event per change.")
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