1// Copyright 2013 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Flags: --allow-natives-syntax 29// Flags: --concurrent-recompilation --block-concurrent-recompilation 30 31if (!%IsConcurrentRecompilationSupported()) { 32 print("Concurrent recompilation is disabled. Skipping this test."); 33 quit(); 34} 35 36function f(foo) { return foo.bar(); } 37 38var o = {}; 39o.__proto__ = { __proto__: { bar: function() { return 1; } } }; 40 41assertEquals(1, f(o)); 42assertEquals(1, f(o)); 43 44// Mark for concurrent optimization. 45%OptimizeFunctionOnNextCall(f, "concurrent"); 46// Kick off recompilation. 47assertEquals(1, f(o)); 48// Change the prototype chain after compile graph has been created. 49o.__proto__.__proto__ = { bar: function() { return 2; } }; 50// At this point, concurrent recompilation thread has not yet done its job. 51assertUnoptimized(f, "no sync"); 52// Let the background thread proceed. 53%UnblockConcurrentRecompilation(); 54// Optimization eventually bails out due to map dependency. 55assertUnoptimized(f, "sync"); 56assertEquals(2, f(o)); 57//Clear type info for stress runs. 58%ClearFunctionTypeFeedback(f); 59