116 lines
4.4 KiB
Python
116 lines
4.4 KiB
Python
"""
|
|
Use lldb Python SBTarget API to iterate on the watchpoint(s) for the target.
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
|
|
|
|
|
|
import os, time
|
|
import re
|
|
import lldb
|
|
import lldbsuite.test.lldbutil as lldbutil
|
|
from lldbsuite.test.lldbtest import *
|
|
|
|
class WatchpointIteratorTestCase(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'])
|
|
@expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
|
|
@expectedFailureWindows("llvm.org/pr24446") # WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows
|
|
def test_watch_iter(self):
|
|
"""Exercise SBTarget.watchpoint_iter() API to iterate on the available watchpoints."""
|
|
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.assertTrue(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.assertTrue(target.GetNumWatchpoints() == 1)
|
|
self.assertTrue(watchpoint.IsEnabled())
|
|
watch_id = watchpoint.GetID()
|
|
self.assertTrue(watch_id != 0)
|
|
|
|
# Continue. Expect the program to stop due to the variable being written to.
|
|
process.Continue()
|
|
|
|
# Hide stdout if not running with '-t' option.
|
|
if not self.TraceOn():
|
|
self.HideStdout()
|
|
|
|
# Print the stack traces.
|
|
lldbutil.print_stacktraces(process)
|
|
|
|
thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonWatchpoint)
|
|
self.assertTrue(thread, "The thread stopped due to watchpoint")
|
|
self.DebugSBValue(value)
|
|
|
|
# We currently only support hardware watchpoint. Verify that we have a
|
|
# meaningful hardware index at this point. Exercise the printed repr of
|
|
# SBWatchpointLocation.
|
|
print(watchpoint)
|
|
self.assertTrue(watchpoint.GetHardwareIndex() != -1)
|
|
|
|
# SBWatchpoint.GetDescription() takes a description level arg.
|
|
print(lldbutil.get_description(watchpoint, lldb.eDescriptionLevelFull))
|
|
|
|
# Now disable the 'rw' watchpoint. The program won't stop when it reads
|
|
# 'global' next.
|
|
watchpoint.SetEnabled(False)
|
|
self.assertTrue(watchpoint.GetHardwareIndex() == -1)
|
|
self.assertFalse(watchpoint.IsEnabled())
|
|
|
|
# Continue. The program does not stop again when the variable is being
|
|
# read from because the watchpoint location has been disabled.
|
|
process.Continue()
|
|
|
|
# At this point, the inferior process should have exited.
|
|
self.assertTrue(process.GetState() == lldb.eStateExited, PROCESS_EXITED)
|
|
|
|
# Verify some vital statistics and exercise the iterator API.
|
|
for watchpoint in target.watchpoint_iter():
|
|
self.assertTrue(watchpoint)
|
|
self.assertTrue(watchpoint.GetWatchSize() == 4)
|
|
self.assertTrue(watchpoint.GetHitCount() == 1)
|
|
print(watchpoint)
|
|
|