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"""
Test some SBValue APIs.
"""
import os, time
import re
import unittest2
import lldb, lldbutil
from lldbtest import *
class ValueAPITestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
@python_api_test
@dsym_test
def test_with_dsym(self):
"""Exercise some SBValue APIs."""
d = {'EXE': self.exe_name}
self.buildDsym(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.value_api(self.exe_name)
@python_api_test
@dwarf_test
def test_with_dwarf(self):
"""Exercise some SBValue APIs."""
d = {'EXE': self.exe_name}
self.buildDwarf(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.value_api(self.exe_name)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# We'll use the test method name as the exe_name.
self.exe_name = self.testMethodName
# Find the line number to of function 'c'.
self.line = line_number('main.c', '// Break at this line')
def value_api(self, exe_name):
"""Exercise some SBValue APIs."""
exe = os.path.join(os.getcwd(), exe_name)
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Create the breakpoint inside function 'main'.
breakpoint = target.BreakpointCreateByLocation('main.c', self.line)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple (None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# Get Frame #0.
self.assertTrue(process.GetState() == lldb.eStateStopped)
thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
frame0 = thread.GetFrameAtIndex(0)
# Get global variable 'days_of_week'.
list = target.FindGlobalVariables('days_of_week', 1)
days_of_week = list.GetValueAtIndex(0)
self.assertTrue(days_of_week, VALID_VARIABLE)
self.assertTrue(days_of_week.GetNumChildren() == 7, VALID_VARIABLE)
self.DebugSBValue(days_of_week)
# Get global variable 'weekdays'.
list = target.FindGlobalVariables('weekdays', 1)
weekdays = list.GetValueAtIndex(0)
self.assertTrue(weekdays, VALID_VARIABLE)
self.assertTrue(weekdays.GetNumChildren() == 5, VALID_VARIABLE)
self.DebugSBValue(weekdays)
# Get global variable 'g_table'.
list = target.FindGlobalVariables('g_table', 1)
g_table = list.GetValueAtIndex(0)
self.assertTrue(g_table, VALID_VARIABLE)
self.assertTrue(g_table.GetNumChildren() == 2, VALID_VARIABLE)
self.DebugSBValue(g_table)
fmt = lldbutil.BasicFormatter()
cvf = lldbutil.ChildVisitingFormatter(indent_child=2)
rdf = lldbutil.RecursiveDecentFormatter(indent_child=2)
if self.TraceOn():
print fmt.format(days_of_week)
print cvf.format(days_of_week)
print cvf.format(weekdays)
print rdf.format(g_table)
# Get variable 'my_int_ptr'.
value = frame0.FindVariable('my_int_ptr')
self.assertTrue(value, VALID_VARIABLE)
self.DebugSBValue(value)
# Get what 'my_int_ptr' points to.
pointed = value.GetChildAtIndex(0)
self.assertTrue(pointed, VALID_VARIABLE)
self.DebugSBValue(pointed)
# While we are at it, verify that 'my_int_ptr' points to 'g_my_int'.
symbol = target.ResolveLoadAddress(int(pointed.GetLocation(), 0)).GetSymbol()
self.assertTrue(symbol)
self.expect(symbol.GetName(), exe=False,
startstr = 'g_my_int')
# Get variable 'str_ptr'.
value = frame0.FindVariable('str_ptr')
self.assertTrue(value, VALID_VARIABLE)
self.DebugSBValue(value)
# SBValue::TypeIsPointerType() should return true.
self.assertTrue(value.TypeIsPointerType())
# Verify the SBValue::GetByteSize() API is working correctly.
arch = self.getArchitecture()
if arch == 'i386':
self.assertTrue(value.GetByteSize() == 4)
elif arch == 'x86_64':
self.assertTrue(value.GetByteSize() == 8)
# Get child at index 5 => 'Friday'.
child = value.GetChildAtIndex(5, lldb.eNoDynamicValues, True)
self.assertTrue(child, VALID_VARIABLE)
self.DebugSBValue(child)
self.expect(child.GetSummary(), exe=False,
substrs = ['Friday'])
# Now try to get at the same variable using GetValueForExpressionPath().
# These two SBValue objects should have the same value.
val2 = value.GetValueForExpressionPath('[5]')
self.assertTrue(val2, VALID_VARIABLE)
self.DebugSBValue(val2)
self.assertTrue(child.GetValue() == val2.GetValue() and
child.GetSummary() == val2.GetSummary())
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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