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4a289a93f7
expectedFailureWindows is equivalent to using the general expectedFailureAll decorator with oslist="windows". Additionally, by moving towards these common decorators we can solve the issue of having to support decorators that can be called with or without arguments. Once all decorators are always called with arguments, and this is enforced by design (because you can't specify the condition you're decorating for without passing an argument) the implementation of the decorators can become much simpler Differential Revision: http://reviews.llvm.org/D16936 llvm-svn: 260134
119 lines
4.5 KiB
Python
119 lines
4.5 KiB
Python
"""
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Use lldb Python SBTarget API to iterate on the watchpoint(s) for the target.
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"""
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from __future__ import print_function
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import os
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import re
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import time
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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 WatchpointIteratorTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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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(self.source, '// Set break point at this line.')
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@add_test_categories(['pyapi'])
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@expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
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@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24446: WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows")
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def test_watch_iter(self):
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"""Exercise SBTarget.watchpoint_iter() API to iterate on the available watchpoints."""
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self.build()
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exe = os.path.join(os.getcwd(), "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 (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.assertTrue(process.GetState() == lldb.eStateStopped,
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PROCESS_STOPPED)
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thread = lldbutil.get_stopped_thread(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.assertTrue(target.GetNumWatchpoints() == 1)
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self.assertTrue(watchpoint.IsEnabled())
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watch_id = watchpoint.GetID()
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self.assertTrue(watch_id != 0)
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# Continue. Expect the program to stop due to the variable being written to.
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process.Continue()
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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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# Print the stack traces.
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lldbutil.print_stacktraces(process)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonWatchpoint)
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self.assertTrue(thread, "The thread stopped due to watchpoint")
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self.DebugSBValue(value)
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# We currently only support hardware watchpoint. Verify that we have a
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# meaningful hardware index at this point. Exercise the printed repr of
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# SBWatchpointLocation.
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print(watchpoint)
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self.assertTrue(watchpoint.GetHardwareIndex() != -1)
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# SBWatchpoint.GetDescription() takes a description level arg.
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print(lldbutil.get_description(watchpoint, lldb.eDescriptionLevelFull))
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# Now disable the 'rw' watchpoint. The program won't stop when it reads
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# 'global' next.
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watchpoint.SetEnabled(False)
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self.assertTrue(watchpoint.GetHardwareIndex() == -1)
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self.assertFalse(watchpoint.IsEnabled())
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# Continue. The program does not stop again when the variable is being
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# read from because the watchpoint location has been disabled.
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process.Continue()
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# At this point, the inferior process should have exited.
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self.assertTrue(process.GetState() == lldb.eStateExited, PROCESS_EXITED)
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# Verify some vital statistics and exercise the iterator API.
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for watchpoint in target.watchpoint_iter():
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self.assertTrue(watchpoint)
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self.assertTrue(watchpoint.GetWatchSize() == 4)
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self.assertTrue(watchpoint.GetHitCount() == 1)
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print(watchpoint)
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