v8/test/webkit/reentrant-caching.js

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// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
if (this.description)
description("Test caching with re-entrancy.");
function test1() {
var objects = [{prop:1}, {get prop(){return 2}}];
function g(o) {
return o.prop;
}
for (var i = 0; i < 10000; i++) {
var o = {
get prop() {
try {
g(objects[++j]);
}catch(e){
}
return 1;
}
};
o[i] = i;
objects.push(o);
}
var j=0;
g(objects[0]);
g(objects[1]);
g(objects[2]);
g(objects[3]);
}
function test2() {
var objects = [Object.create({prop:1}), Object.create({get prop(){return 2}})];
function g(o) {
return o.prop;
}
var proto = {
get prop() {
try {
g(objects[++j]);
}catch(e){
}
return 1;
}
};
for (var i = 0; i < 10000; i++) {
var o = Object.create(proto);
o[i] = i;
objects.push(o);
}
var j=0;
g(objects[0]);
g(objects[1]);
g(objects[2]);
g(objects[3]);
}
function test3() {
var objects = [Object.create(Object.create({prop:1})), Object.create(Object.create({get prop(){return 2}}))];
function g(o) {
return o.prop;
}
var proto = {
get prop() {
try {
g(objects[++j]);
}catch(e){
}
return 1;
}
};
for (var i = 0; i < 10000; i++) {
var o = Object.create(Object.create(proto));
o[i] = i;
objects.push(o);
}
var j=0;
g(objects[0]);
g(objects[1]);
g(objects[2]);
g(objects[3]);
}
test1();
test2();
test3();