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# TestExclusivitySuppression.py
#
# This source file is part of the Swift.org open source project
#
# Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
# Licensed under Apache License v2.0 with Runtime Library Exception
#
# See https://swift.org/LICENSE.txt for license information
# See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
#
# ------------------------------------------------------------------------------
"""
Test suppression of dynamic exclusivity enforcement
"""
import lldb
from lldbsuite.test.lldbtest import *
from lldbsuite.test.decorators import *
import lldbsuite.test.lldbutil as lldbutil
import os
import unittest2
import sys
if sys.version_info.major == 2:
import commands as subprocess
else:
import subprocess
def execute_command(command):
(exit_status, output) = subprocess.getstatusoutput(command)
return exit_status
class TestExclusivitySuppression(TestBase):
# Test that we can evaluate w.s.i at Breakpoint 1 without triggering
# a failure due to exclusivity
@swiftTest
def test_basic_exclusivity_suppression(self):
"""Test that exclusively owned values can still be accessed"""
self.build()
(target, process, thread, bp1) = lldbutil.run_to_source_breakpoint(self,
'Breakpoint 1', self.main_source_spec)
frame = thread.frames[0]
self.assertTrue(frame, "Frame 0 is valid.")
lldbutil.check_expression(self, frame, "w.s.i", "8", use_summary=False)
# Test that we properly handle nested expression evaluations by:
# (1) Breaking at breakpoint 1
# (2) Running 'expr get()' (which will hit breakpoint 2)
# (3) Evaluating i at breakpoint 2 (this is a nested evaluation)
# (4) Continuing the evaluation of 'expr get()' to return to bp 1
# (5) Evaluating w.s.i again to check that finishing the nested expression
# did not prematurely re-enable exclusivity checks.
@swiftTest
def test_exclusivity_suppression_for_concurrent_expressions(self):
"""Test that exclusivity suppression works with concurrent expressions"""
self.build()
(target, process, thread, bp1) = lldbutil.run_to_source_breakpoint(self,
'Breakpoint 1', self.main_source_spec)
# We hit Breakpoint 1, then evaluate 'get()' to hit breakpoint 2.
bp2 = target.BreakpointCreateBySourceRegex('Breakpoint 2',
self.main_source_spec)
self.assertTrue(bp2.GetNumLocations() > 0, VALID_BREAKPOINT)
opts = lldb.SBExpressionOptions()
opts.SetIgnoreBreakpoints(False)
thread.frame[0].EvaluateExpression('get()', opts)
# Evaluate w.s.i at breakpoint 2 to check that exclusivity checking
# is suppressed inside the nested expression
lldbutil.check_expression(self, thread.frames[0], "i", "8", use_summary=False)
# Return to breakpoint 1 and evaluate w.s.i again to check that
# exclusivity checking is still suppressed
self.dbg.HandleCommand("thread ret -x")
lldbutil.check_expression(self, thread.frame[0], "w.s.i", "8", use_summary=False)
def setUp(self):
TestBase.setUp(self)
self.main_source = "main.swift"
self.main_source_spec = lldb.SBFileSpec(self.main_source)
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