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 31 if (!%IsConcurrentRecompilationSupported()) { 32 print("Concurrent recompilation is disabled. Skipping this test."); 33 quit(); 34 } 35 36 function f(foo) { return foo.bar(); } 37 38 var o = {}; 39 o.__proto__ = { __proto__: { bar: function() { return 1; } } }; 40 41 assertEquals(1, f(o)); 42 assertEquals(1, f(o)); 43 44 // Mark for concurrent optimization. 45 %OptimizeFunctionOnNextCall(f, "concurrent"); 46 // Kick off recompilation. 47 assertEquals(1, f(o)); 48 // Change the prototype chain after compile graph has been created. 49 o.__proto__.__proto__ = { bar: function() { return 2; } }; 50 // At this point, concurrent recompilation thread has not yet done its job. 51 assertUnoptimized(f, "no sync"); 52 // Let the background thread proceed. 53 %UnblockConcurrentRecompilation(); 54 // Optimization eventually bails out due to map dependency. 55 assertUnoptimized(f, "sync"); 56 assertEquals(2, f(o)); 57 //Clear type info for stress runs. 58 %ClearFunctionTypeFeedback(f); 59
