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
105 lines
3.7 KiB
Python
105 lines
3.7 KiB
Python
"""
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Use lldb Python SBValue API to create a watchpoint for read_write of 'globl' var.
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"""
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import os, time
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import re
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import unittest2
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import lldb, lldbutil
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from lldbtest import *
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class SetWatchpointAPITestCase(TestBase):
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mydir = os.path.join("python_api", "watchpoint")
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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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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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@python_api_test
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def test_watch_val_with_dsym(self):
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"""Exercise SBValue.Watch() API to set a watchpoint."""
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self.buildDsym()
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self.do_set_watchpoint()
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@python_api_test
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def test_watch_val_with_dwarf(self):
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"""Exercise SBValue.Watch() API to set a watchpoint."""
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self.buildDwarf()
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self.do_set_watchpoint()
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def do_set_watchpoint(self):
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"""Use SBFrame.WatchValue() to set a watchpoint and verify that the program stops later due to the watchpoint."""
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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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# Now create a breakpoint on main.c.
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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, os.getcwd())
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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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watchpoint = value.Watch(True, True, True)
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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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print watchpoint
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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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if (self.TraceOn()):
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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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# Continue. Expect the program to stop due to the variable being read from.
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process.Continue()
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if (self.TraceOn()):
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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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# Continue the process. We don't expect the program to be stopped again.
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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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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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