95 lines
3.6 KiB
Python
95 lines
3.6 KiB
Python
"""
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Use lldb Python SBWatchpoint API to set the ignore count.
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class WatchpointIgnoreCountTestCase(TestBase):
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NO_DEBUG_INFO_TESTCASE = True
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Our simple source filename.
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self.source = 'main.c'
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# Find the line number to break inside main().
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self.line = line_number(
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self.source, '// Set break point at this line.')
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# on arm64 targets, lldb has incorrect hit-count / ignore-counts
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# for watchpoints when they are hit with multiple threads at
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# the same time. Tracked as llvm.org/pr49433
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# or rdar://93863107 inside Apple.
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def affected_by_radar_93863107(self):
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return (self.getArchitecture() in ['arm64', 'arm64e']) and self.platformIsDarwin()
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# Read-write watchpoints not supported on SystemZ
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@expectedFailureAll(archs=['s390x'])
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def test_set_watch_ignore_count(self):
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"""Test SBWatchpoint.SetIgnoreCount() API."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Create a breakpoint on main.c in order to set our watchpoint later.
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breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
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self.assertTrue(breakpoint and
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breakpoint.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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# Now launch the process, and do not stop at the entry point.
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process = target.LaunchSimple(
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None, None, self.get_process_working_directory())
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# We should be stopped due to the breakpoint. Get frame #0.
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process = target.GetProcess()
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self.assertState(process.GetState(), lldb.eStateStopped,
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PROCESS_STOPPED)
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thread = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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frame0 = thread.GetFrameAtIndex(0)
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# Watch 'global' for read and write.
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value = frame0.FindValue('global', lldb.eValueTypeVariableGlobal)
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error = lldb.SBError()
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watchpoint = value.Watch(True, True, True, error)
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self.assertTrue(value and watchpoint,
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"Successfully found the variable and set a watchpoint")
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self.DebugSBValue(value)
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# Hide stdout if not running with '-t' option.
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if not self.TraceOn():
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self.HideStdout()
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# There should be only 1 watchpoint location under the target.
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self.assertEqual(target.GetNumWatchpoints(), 1)
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watchpoint = target.GetWatchpointAtIndex(0)
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self.assertTrue(watchpoint.IsEnabled())
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self.assertEqual(watchpoint.GetIgnoreCount(), 0)
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watch_id = watchpoint.GetID()
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self.assertNotEqual(watch_id, 0)
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print(watchpoint)
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# Now immediately set the ignore count to 2. When we continue, expect the
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# inferior to run to its completion without stopping due to watchpoint.
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watchpoint.SetIgnoreCount(2)
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print(watchpoint)
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process.Continue()
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# At this point, the inferior process should have exited.
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self.assertState(process.GetState(), lldb.eStateExited, PROCESS_EXITED)
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# Verify some vital statistics.
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self.assertTrue(watchpoint)
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self.assertEqual(watchpoint.GetWatchSize(), 4)
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if not self.affected_by_radar_93863107():
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self.assertEqual(watchpoint.GetHitCount(), 2)
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print(watchpoint)
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