You've already forked llvm-project
mirror of
https://github.com/encounter/llvm-project.git
synced 2026-03-30 11:27:19 -07:00
Jonas Devlieghere
e3a0283e5a
The reproducers only track the creation of objects and not their destruction. Therefore it keeps all objects alive indefinitely.
112 lines
3.7 KiB
Python
112 lines
3.7 KiB
Python
"""
|
|
Use lldb Python SBValue API to create a watchpoint for read_write of 'globl' var.
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
|
|
|
|
import lldb
|
|
from lldbsuite.test.decorators import *
|
|
from lldbsuite.test.lldbtest import *
|
|
from lldbsuite.test import lldbutil
|
|
|
|
|
|
class SetWatchpointAPITestCase(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
NO_DEBUG_INFO_TESTCASE = True
|
|
|
|
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'])
|
|
# Read-write watchpoints not supported on SystemZ
|
|
@expectedFailureAll(archs=['s390x'])
|
|
def test_watch_val(self):
|
|
"""Exercise SBValue.Watch() API to set a watchpoint."""
|
|
self.build()
|
|
exe = self.getBuildArtifact("a.out")
|
|
|
|
# Create a target by the debugger.
|
|
target = self.dbg.CreateTarget(exe)
|
|
self.assertTrue(target, VALID_TARGET)
|
|
|
|
# Now create a breakpoint on main.c.
|
|
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()
|
|
|
|
print(watchpoint)
|
|
|
|
# Continue. Expect the program to stop due to the variable being
|
|
# written to.
|
|
process.Continue()
|
|
|
|
if (self.TraceOn()):
|
|
lldbutil.print_stacktraces(process)
|
|
|
|
thread = lldbutil.get_stopped_thread(
|
|
process, lldb.eStopReasonWatchpoint)
|
|
self.assertTrue(thread, "The thread stopped due to watchpoint")
|
|
self.DebugSBValue(value)
|
|
|
|
# Continue. Expect the program to stop due to the variable being read
|
|
# from.
|
|
process.Continue()
|
|
|
|
if (self.TraceOn()):
|
|
lldbutil.print_stacktraces(process)
|
|
|
|
thread = lldbutil.get_stopped_thread(
|
|
process, lldb.eStopReasonWatchpoint)
|
|
self.assertTrue(thread, "The thread stopped due to watchpoint")
|
|
self.DebugSBValue(value)
|
|
|
|
# Continue the process. We don't expect the program to be stopped
|
|
# again.
|
|
process.Continue()
|
|
|
|
# At this point, the inferior process should have exited.
|
|
self.assertTrue(
|
|
process.GetState() == lldb.eStateExited,
|
|
PROCESS_EXITED)
|
|
|
|
self.dbg.DeleteTarget(target)
|
|
|
|
# The next check relies on the watchpoint being destructed, which does
|
|
# not happen during replay because objects are intentionally kept alive
|
|
# forever.
|
|
if not configuration.is_reproducer():
|
|
self.assertFalse(watchpoint.IsValid())
|