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"""
Use lldb Python SBWatchpoint API to set the ignore count.
"""
from __future__ import print_function
import os
import time
import re
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class WatchpointIgnoreCountTestCase(TestBase):
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.')
@add_test_categories(['pyapi'])
# Watchpoints not supported
@expectedFailureAndroid(archs=['arm', 'aarch64'])
@expectedFailureAll(
oslist=["windows"],
bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows")
# Read-write watchpoints not supported on SystemZ
@expectedFailureAll(archs=['s390x'])
def test_set_watch_ignore_count(self):
"""Test SBWatchpoint.SetIgnoreCount() API."""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Create a breakpoint on main.c in order to set our watchpoint later.
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.assertEqual(process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
thread = lldbutil.get_stopped_thread(
process, lldb.eStopReasonBreakpoint)
frame0 = thread.GetFrameAtIndex(0)
# Watch 'global' for read and write.
value = frame0.FindValue('global', lldb.eValueTypeVariableGlobal)
error = lldb.SBError()
watchpoint = value.Watch(True, True, True, error)
self.assertTrue(value and watchpoint,
"Successfully found the variable and set a watchpoint")
self.DebugSBValue(value)
# Hide stdout if not running with '-t' option.
if not self.TraceOn():
self.HideStdout()
# There should be only 1 watchpoint location under the target.
self.assertEqual(target.GetNumWatchpoints(), 1)
watchpoint = target.GetWatchpointAtIndex(0)
self.assertTrue(watchpoint.IsEnabled())
self.assertEqual(watchpoint.GetIgnoreCount(), 0)
watch_id = watchpoint.GetID()
self.assertNotEqual(watch_id, 0)
print(watchpoint)
# Now immediately set the ignore count to 2. When we continue, expect the
# inferior to run to its completion without stopping due to watchpoint.
watchpoint.SetIgnoreCount(2)
print(watchpoint)
process.Continue()
# At this point, the inferior process should have exited.
self.assertEqual(process.GetState(), lldb.eStateExited, PROCESS_EXITED)
# Verify some vital statistics.
self.assertTrue(watchpoint)
self.assertEqual(watchpoint.GetWatchSize(), 4)
self.assertEqual(watchpoint.GetHitCount(), 2)
print(watchpoint)
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