01a678603a
a watchpoint for either the variable encapsulated by SBValue (Watch) or the pointee encapsulated by SBValue (WatchPointee). Removed SBFrame::WatchValue() and SBFrame::WatchLocation() API as a result of that. Modified the watchpoint related test suite to reflect the change. Plus replacing WatchpointLocation with Watchpoint throughout the code base. There are still cleanups to be dome. This patch passes the whole test suite. Check it in so that we aggressively catch regressions. llvm-svn: 141925
126 lines
4.7 KiB
Python
126 lines
4.7 KiB
Python
"""
|
|
Use lldb Python SBTarget API to iterate on the watchpoint(s) for the target.
|
|
"""
|
|
|
|
import os, time
|
|
import re
|
|
import unittest2
|
|
import lldb, lldbutil
|
|
from lldbtest import *
|
|
|
|
class WatchpointIteratorTestCase(TestBase):
|
|
|
|
mydir = os.path.join("python_api", "watchpoint")
|
|
|
|
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.')
|
|
|
|
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
|
|
@python_api_test
|
|
def test_watch_iter_with_dsym(self):
|
|
"""Exercise SBTarget.watchpoint_iter() API to iterate on the available watchpoints."""
|
|
self.buildDsym()
|
|
self.do_watchpoint_iter()
|
|
|
|
@python_api_test
|
|
def test_watch_iter_with_dwarf(self):
|
|
"""Exercise SBTarget.watchpoint_iter() API to iterate on the available watchpoints."""
|
|
self.buildDwarf()
|
|
self.do_watchpoint_iter()
|
|
|
|
def do_watchpoint_iter(self):
|
|
"""Use SBTarget.watchpoint_iter() to do Pythonic iteration on the available watchpoints."""
|
|
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, os.getcwd())
|
|
|
|
# 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)
|
|
watchpoint = value.Watch(True, True, True)
|
|
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
|
|
|
|
|
|
if __name__ == '__main__':
|
|
import atexit
|
|
lldb.SBDebugger.Initialize()
|
|
atexit.register(lambda: lldb.SBDebugger.Terminate())
|
|
unittest2.main()
|