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"""Test that adding, deleting and modifying watchpoints sends the appropriate events."""
from __future__ import print_function
import os, time
import lldb
import lldbsuite.test.lldbutil as lldbutil
from lldbsuite.test.lldbtest import *
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'])
@expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
@expectedFailureWindows("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, True, 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.SetIgnoreCount(10)
self.GetWatchpointEvent (lldb.eWatchpointEventTypeIgnoreChanged)
local_watch.SetCondition ("1 == 2")
self.GetWatchpointEvent (lldb.eWatchpointEventTypeConditionChanged)
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 == True, "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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