02674ee414
R=yangguo@chromium.org Review URL: https://codereview.chromium.org/18509003 Patch from Haitao Feng <haitao.feng@intel.com>. git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15510 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
449 lines
16 KiB
C++
449 lines
16 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "cctest.h"
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using namespace v8;
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namespace i = v8::internal;
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namespace {
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// Need to create a new isolate when FLAG_harmony_observation is on.
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class HarmonyIsolate {
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public:
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HarmonyIsolate() {
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i::FLAG_harmony_observation = true;
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isolate_ = Isolate::New();
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isolate_->Enter();
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}
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~HarmonyIsolate() {
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isolate_->Exit();
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isolate_->Dispose();
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}
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Isolate* GetIsolate() const { return isolate_; }
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private:
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Isolate* isolate_;
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};
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}
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TEST(PerIsolateState) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context1;
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CompileRun(
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"var count = 0;"
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"var calls = 0;"
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"var observer = function(records) { count = records.length; calls++ };"
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"var obj = {};"
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"Object.observe(obj, observer);");
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Handle<Value> observer = CompileRun("observer");
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Handle<Value> obj = CompileRun("obj");
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Handle<Value> notify_fun1 = CompileRun(
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"(function() { obj.foo = 'bar'; })");
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Handle<Value> notify_fun2;
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{
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LocalContext context2;
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context2->Global()->Set(String::New("obj"), obj);
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notify_fun2 = CompileRun(
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"(function() { obj.foo = 'baz'; })");
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}
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Handle<Value> notify_fun3;
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{
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LocalContext context3;
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context3->Global()->Set(String::New("obj"), obj);
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notify_fun3 = CompileRun(
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"(function() { obj.foo = 'bat'; })");
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}
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{
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LocalContext context4;
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context4->Global()->Set(String::New("observer"), observer);
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context4->Global()->Set(String::New("fun1"), notify_fun1);
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context4->Global()->Set(String::New("fun2"), notify_fun2);
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context4->Global()->Set(String::New("fun3"), notify_fun3);
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CompileRun("fun1(); fun2(); fun3(); Object.deliverChangeRecords(observer)");
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}
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CHECK_EQ(1, CompileRun("calls")->Int32Value());
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CHECK_EQ(3, CompileRun("count")->Int32Value());
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}
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TEST(EndOfMicrotaskDelivery) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context;
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CompileRun(
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"var obj = {};"
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"var count = 0;"
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"var observer = function(records) { count = records.length };"
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"Object.observe(obj, observer);"
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"obj.foo = 'bar';");
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CHECK_EQ(1, CompileRun("count")->Int32Value());
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}
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TEST(DeliveryOrdering) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context;
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CompileRun(
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"var obj1 = {};"
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"var obj2 = {};"
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"var ordering = [];"
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"function observer2() { ordering.push(2); };"
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"function observer1() { ordering.push(1); };"
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"function observer3() { ordering.push(3); };"
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"Object.observe(obj1, observer1);"
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"Object.observe(obj1, observer2);"
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"Object.observe(obj1, observer3);"
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"obj1.foo = 'bar';");
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CHECK_EQ(3, CompileRun("ordering.length")->Int32Value());
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CHECK_EQ(1, CompileRun("ordering[0]")->Int32Value());
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CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
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CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
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CompileRun(
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"ordering = [];"
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"Object.observe(obj2, observer3);"
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"Object.observe(obj2, observer2);"
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"Object.observe(obj2, observer1);"
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"obj2.foo = 'baz'");
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CHECK_EQ(3, CompileRun("ordering.length")->Int32Value());
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CHECK_EQ(1, CompileRun("ordering[0]")->Int32Value());
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CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
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CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
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}
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TEST(DeliveryOrderingReentrant) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context;
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CompileRun(
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"var obj = {};"
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"var reentered = false;"
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"var ordering = [];"
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"function observer1() { ordering.push(1); };"
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"function observer2() {"
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" if (!reentered) {"
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" obj.foo = 'baz';"
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" reentered = true;"
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" }"
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" ordering.push(2);"
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"};"
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"function observer3() { ordering.push(3); };"
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"Object.observe(obj, observer1);"
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"Object.observe(obj, observer2);"
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"Object.observe(obj, observer3);"
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"obj.foo = 'bar';");
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CHECK_EQ(5, CompileRun("ordering.length")->Int32Value());
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CHECK_EQ(1, CompileRun("ordering[0]")->Int32Value());
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CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
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CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
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// Note that we re-deliver to observers 1 and 2, while observer3
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// already received the second record during the first round.
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CHECK_EQ(1, CompileRun("ordering[3]")->Int32Value());
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CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
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}
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TEST(DeliveryOrderingDeliverChangeRecords) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context;
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CompileRun(
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"var obj = {};"
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"var ordering = [];"
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"function observer1() { ordering.push(1); if (!obj.b) obj.b = true };"
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"function observer2() { ordering.push(2); };"
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"Object.observe(obj, observer1);"
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"Object.observe(obj, observer2);"
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"obj.a = 1;"
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"Object.deliverChangeRecords(observer2);");
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CHECK_EQ(4, CompileRun("ordering.length")->Int32Value());
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// First, observer2 is called due to deliverChangeRecords
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CHECK_EQ(2, CompileRun("ordering[0]")->Int32Value());
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// Then, observer1 is called when the stack unwinds
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CHECK_EQ(1, CompileRun("ordering[1]")->Int32Value());
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// observer1's mutation causes both 1 and 2 to be reactivated,
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// with 1 having priority.
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CHECK_EQ(1, CompileRun("ordering[2]")->Int32Value());
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CHECK_EQ(2, CompileRun("ordering[3]")->Int32Value());
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}
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TEST(ObjectHashTableGrowth) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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// Initializing this context sets up initial hash tables.
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LocalContext context;
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Handle<Value> obj = CompileRun("obj = {};");
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Handle<Value> observer = CompileRun(
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"var ran = false;"
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"(function() { ran = true })");
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{
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// As does initializing this context.
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LocalContext context2;
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context2->Global()->Set(String::New("obj"), obj);
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context2->Global()->Set(String::New("observer"), observer);
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CompileRun(
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"var objArr = [];"
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// 100 objects should be enough to make the hash table grow
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// (and thus relocate).
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"for (var i = 0; i < 100; ++i) {"
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" objArr.push({});"
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" Object.observe(objArr[objArr.length-1], function(){});"
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"}"
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"Object.observe(obj, observer);");
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}
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// obj is now marked "is_observed", but our map has moved.
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CompileRun("obj.foo = 'bar'");
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CHECK(CompileRun("ran")->BooleanValue());
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}
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TEST(GlobalObjectObservation) {
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HarmonyIsolate isolate;
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LocalContext context;
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HandleScope scope(isolate.GetIsolate());
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Handle<Object> global_proxy = context->Global();
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Handle<Object> inner_global = global_proxy->GetPrototype().As<Object>();
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CompileRun(
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"var records = [];"
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"var global = this;"
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"Object.observe(global, function(r) { [].push.apply(records, r) });"
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"global.foo = 'hello';");
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CHECK_EQ(1, CompileRun("records.length")->Int32Value());
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CHECK(global_proxy->StrictEquals(CompileRun("records[0].object")));
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// Detached, mutating the proxy has no effect.
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context->DetachGlobal();
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CompileRun("global.bar = 'goodbye';");
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CHECK_EQ(1, CompileRun("records.length")->Int32Value());
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// Mutating the global object directly still has an effect...
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CompileRun("this.bar = 'goodbye';");
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CHECK_EQ(2, CompileRun("records.length")->Int32Value());
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CHECK(inner_global->StrictEquals(CompileRun("records[1].object")));
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// Reattached, back to global proxy.
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context->ReattachGlobal(global_proxy);
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CompileRun("global.baz = 'again';");
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CHECK_EQ(3, CompileRun("records.length")->Int32Value());
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CHECK(global_proxy->StrictEquals(CompileRun("records[2].object")));
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// Attached to a different context, should not leak mutations
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// to the old context.
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context->DetachGlobal();
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{
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LocalContext context2;
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context2->DetachGlobal();
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context2->ReattachGlobal(global_proxy);
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CompileRun(
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"var records2 = [];"
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"Object.observe(this, function(r) { [].push.apply(records2, r) });"
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"this.bat = 'context2';");
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CHECK_EQ(1, CompileRun("records2.length")->Int32Value());
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CHECK(global_proxy->StrictEquals(CompileRun("records2[0].object")));
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}
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CHECK_EQ(3, CompileRun("records.length")->Int32Value());
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// Attaching by passing to Context::New
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{
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// Delegates to Context::New
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LocalContext context3(NULL, Handle<ObjectTemplate>(), global_proxy);
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CompileRun(
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"var records3 = [];"
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"Object.observe(this, function(r) { [].push.apply(records3, r) });"
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"this.qux = 'context3';");
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CHECK_EQ(1, CompileRun("records3.length")->Int32Value());
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CHECK(global_proxy->StrictEquals(CompileRun("records3[0].object")));
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}
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CHECK_EQ(3, CompileRun("records.length")->Int32Value());
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}
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struct RecordExpectation {
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Handle<Value> object;
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const char* type;
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const char* name;
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Handle<Value> old_value;
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};
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// TODO(adamk): Use this helper elsewhere in this file.
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static void ExpectRecords(Handle<Value> records,
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const RecordExpectation expectations[],
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int num) {
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CHECK(records->IsArray());
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Handle<Array> recordArray = records.As<Array>();
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CHECK_EQ(num, static_cast<int>(recordArray->Length()));
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for (int i = 0; i < num; ++i) {
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Handle<Value> record = recordArray->Get(i);
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CHECK(record->IsObject());
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Handle<Object> recordObj = record.As<Object>();
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CHECK(expectations[i].object->StrictEquals(
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recordObj->Get(String::New("object"))));
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CHECK(String::New(expectations[i].type)->Equals(
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recordObj->Get(String::New("type"))));
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CHECK(String::New(expectations[i].name)->Equals(
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recordObj->Get(String::New("name"))));
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if (!expectations[i].old_value.IsEmpty()) {
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CHECK(expectations[i].old_value->Equals(
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recordObj->Get(String::New("oldValue"))));
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}
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}
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}
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#define EXPECT_RECORDS(records, expectations) \
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ExpectRecords(records, expectations, ARRAY_SIZE(expectations))
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TEST(APITestBasicMutation) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context;
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Handle<Object> obj = Handle<Object>::Cast(CompileRun(
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"var records = [];"
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"var obj = {};"
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"function observer(r) { [].push.apply(records, r); };"
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"Object.observe(obj, observer);"
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"obj"));
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obj->Set(String::New("foo"), Number::New(7));
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obj->Set(1, Number::New(2));
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// ForceSet should work just as well as Set
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obj->ForceSet(String::New("foo"), Number::New(3));
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obj->ForceSet(Number::New(1), Number::New(4));
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// Setting an indexed element via the property setting method
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obj->Set(Number::New(1), Number::New(5));
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// Setting with a non-String, non-uint32 key
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obj->Set(Number::New(1.1), Number::New(6), DontDelete);
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obj->Delete(String::New("foo"));
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obj->Delete(1);
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obj->ForceDelete(Number::New(1.1));
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// Force delivery
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// TODO(adamk): Should the above set methods trigger delivery themselves?
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CompileRun("void 0");
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CHECK_EQ(9, CompileRun("records.length")->Int32Value());
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const RecordExpectation expected_records[] = {
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{ obj, "new", "foo", Handle<Value>() },
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{ obj, "new", "1", Handle<Value>() },
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// Note: use 7 not 1 below, as the latter triggers a nifty VS10 compiler bug
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// where instead of 1.0, a garbage value would be passed into Number::New.
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{ obj, "updated", "foo", Number::New(7) },
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{ obj, "updated", "1", Number::New(2) },
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{ obj, "updated", "1", Number::New(4) },
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{ obj, "new", "1.1", Handle<Value>() },
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{ obj, "deleted", "foo", Number::New(3) },
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{ obj, "deleted", "1", Number::New(5) },
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{ obj, "deleted", "1.1", Number::New(6) }
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};
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EXPECT_RECORDS(CompileRun("records"), expected_records);
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}
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TEST(HiddenPrototypeObservation) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context;
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Handle<FunctionTemplate> tmpl = FunctionTemplate::New();
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tmpl->SetHiddenPrototype(true);
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tmpl->InstanceTemplate()->Set(String::New("foo"), Number::New(75));
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Handle<Object> proto = tmpl->GetFunction()->NewInstance();
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Handle<Object> obj = Object::New();
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obj->SetPrototype(proto);
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context->Global()->Set(String::New("obj"), obj);
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context->Global()->Set(String::New("proto"), proto);
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CompileRun(
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"var records;"
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"function observer(r) { records = r; };"
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"Object.observe(obj, observer);"
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"obj.foo = 41;" // triggers a notification
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"proto.foo = 42;"); // does not trigger a notification
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const RecordExpectation expected_records[] = {
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{ obj, "updated", "foo", Number::New(75) }
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};
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EXPECT_RECORDS(CompileRun("records"), expected_records);
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obj->SetPrototype(Null());
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CompileRun("obj.foo = 43");
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const RecordExpectation expected_records2[] = {
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{ obj, "new", "foo", Handle<Value>() }
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};
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EXPECT_RECORDS(CompileRun("records"), expected_records2);
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obj->SetPrototype(proto);
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CompileRun(
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"Object.observe(proto, observer);"
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"proto.bar = 1;"
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"Object.unobserve(obj, observer);"
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"obj.foo = 44;");
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const RecordExpectation expected_records3[] = {
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{ proto, "new", "bar", Handle<Value>() }
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// TODO(adamk): The below record should be emitted since proto is observed
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// and has been modified. Not clear if this happens in practice.
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// { proto, "updated", "foo", Number::New(43) }
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};
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EXPECT_RECORDS(CompileRun("records"), expected_records3);
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}
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static int NumberOfElements(i::Handle<i::JSWeakMap> map) {
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return i::ObjectHashTable::cast(map->table())->NumberOfElements();
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}
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TEST(ObservationWeakMap) {
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HarmonyIsolate isolate;
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HandleScope scope(isolate.GetIsolate());
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LocalContext context;
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CompileRun(
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"var obj = {};"
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"Object.observe(obj, function(){});"
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"Object.getNotifier(obj);"
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"obj = null;");
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i::Handle<i::JSObject> observation_state =
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i::Isolate::Current()->factory()->observation_state();
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i::Handle<i::JSWeakMap> observerInfoMap =
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i::Handle<i::JSWeakMap>::cast(
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i::GetProperty(observation_state, "observerInfoMap"));
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i::Handle<i::JSWeakMap> objectInfoMap =
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i::Handle<i::JSWeakMap>::cast(
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i::GetProperty(observation_state, "objectInfoMap"));
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i::Handle<i::JSWeakMap> notifierTargetMap =
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i::Handle<i::JSWeakMap>::cast(
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i::GetProperty(observation_state, "notifierTargetMap"));
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CHECK_EQ(1, NumberOfElements(observerInfoMap));
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CHECK_EQ(1, NumberOfElements(objectInfoMap));
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CHECK_EQ(1, NumberOfElements(notifierTargetMap));
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HEAP->CollectAllGarbage(i::Heap::kAbortIncrementalMarkingMask);
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CHECK_EQ(0, NumberOfElements(observerInfoMap));
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CHECK_EQ(0, NumberOfElements(objectInfoMap));
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CHECK_EQ(0, NumberOfElements(notifierTargetMap));
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}
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