test/cctest/test-weaktypedarrays.cc - platform/external/chromium_org/v8 - Git at Google

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 // OWNER OR 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.

 #include <stdlib.h>

 #include "src/v8.h"
 #include "src/api.h"
 #include "src/heap.h"
 #include "src/objects.h"

 #include "test/cctest/cctest.h"

 using namespace v8::internal;

 static Isolate* GetIsolateFrom(LocalContext* context) {
   return reinterpret_cast<Isolate*>((*context)->GetIsolate());
 }


 static int CountArrayBuffersInWeakList(Heap* heap) {
   int count = 0;
   for (Object* o = heap->array_buffers_list();
        !o->IsUndefined();
        o = JSArrayBuffer::cast(o)->weak_next()) {
     count++;
   }
   return count;
 }


 static bool HasArrayBufferInWeakList(Heap* heap, JSArrayBuffer* ab) {
   for (Object* o = heap->array_buffers_list();
        !o->IsUndefined();
        o = JSArrayBuffer::cast(o)->weak_next()) {
     if (ab == o) return true;
   }
   return false;
 }


 static int CountViews(JSArrayBuffer* array_buffer) {
   int count = 0;
   for (Object* o = array_buffer->weak_first_view();
        !o->IsUndefined();
        o = JSArrayBufferView::cast(o)->weak_next()) {
     count++;
   }

   return count;
 }

 static bool HasViewInWeakList(JSArrayBuffer* array_buffer,
                               JSArrayBufferView* ta) {
   for (Object* o = array_buffer->weak_first_view();
        !o->IsUndefined();
        o = JSArrayBufferView::cast(o)->weak_next()) {
     if (ta == o) return true;
   }
   return false;
 }


 TEST(WeakArrayBuffersFromApi) {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);

   int start = CountArrayBuffersInWeakList(isolate->heap());
   {
     v8::HandleScope s1(context->GetIsolate());
     v8::Handle<v8::ArrayBuffer> ab1 =
         v8::ArrayBuffer::New(context->GetIsolate(), 256);
     {
       v8::HandleScope s2(context->GetIsolate());
       v8::Handle<v8::ArrayBuffer> ab2 =
           v8::ArrayBuffer::New(context->GetIsolate(), 128);

       Handle<JSArrayBuffer> iab1 = v8::Utils::OpenHandle(*ab1);
       Handle<JSArrayBuffer> iab2 = v8::Utils::OpenHandle(*ab2);
       CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()) - start);
       CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab1));
       CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab2));
     }
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
     CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
     {
       HandleScope scope2(isolate);
       Handle<JSArrayBuffer> iab1 = v8::Utils::OpenHandle(*ab1);

       CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab1));
     }
   }

   isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
   CHECK_EQ(start, CountArrayBuffersInWeakList(isolate->heap()));
 }


 TEST(WeakArrayBuffersFromScript) {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);
   int start = CountArrayBuffersInWeakList(isolate->heap());

   for (int i = 1; i <= 3; i++) {
     // Create 3 array buffers, make i-th of them garbage,
     // validate correct state of array buffer weak list.
     CHECK_EQ(start, CountArrayBuffersInWeakList(isolate->heap()));
     {
       v8::HandleScope scope(context->GetIsolate());

       {
         v8::HandleScope s1(context->GetIsolate());
         CompileRun("var ab1 = new ArrayBuffer(256);"
                    "var ab2 = new ArrayBuffer(256);"
                    "var ab3 = new ArrayBuffer(256);");
         v8::Handle<v8::ArrayBuffer> ab1 =
             v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab1"));
         v8::Handle<v8::ArrayBuffer> ab2 =
             v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab2"));
         v8::Handle<v8::ArrayBuffer> ab3 =
             v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab3"));

         CHECK_EQ(3, CountArrayBuffersInWeakList(isolate->heap()) - start);
         CHECK(HasArrayBufferInWeakList(isolate->heap(),
               *v8::Utils::OpenHandle(*ab1)));
         CHECK(HasArrayBufferInWeakList(isolate->heap(),
               *v8::Utils::OpenHandle(*ab2)));
         CHECK(HasArrayBufferInWeakList(isolate->heap(),
               *v8::Utils::OpenHandle(*ab3)));
       }

       i::ScopedVector<char> source(1024);
       i::SNPrintF(source, "ab%d = null;", i);
       CompileRun(source.start());
       isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

       CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()) - start);

       {
         v8::HandleScope s2(context->GetIsolate());
         for (int j = 1; j <= 3; j++) {
           if (j == i) continue;
           i::SNPrintF(source, "ab%d", j);
           v8::Handle<v8::ArrayBuffer> ab =
               v8::Handle<v8::ArrayBuffer>::Cast(CompileRun(source.start()));
           CHECK(HasArrayBufferInWeakList(isolate->heap(),
                 *v8::Utils::OpenHandle(*ab)));
           }
       }

       CompileRun("ab1 = null; ab2 = null; ab3 = null;");
     }

     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
     CHECK_EQ(start, CountArrayBuffersInWeakList(isolate->heap()));
   }
 }

 template <typename View>
 void TestViewFromApi() {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);

   v8::HandleScope s1(context->GetIsolate());
   v8::Handle<v8::ArrayBuffer> ab =
       v8::ArrayBuffer::New(context->GetIsolate(), 2048);
   Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
   {
     v8::HandleScope s2(context->GetIsolate());
     v8::Handle<View> ta1 = View::New(ab, 0, 256);
     {
       v8::HandleScope s3(context->GetIsolate());
       v8::Handle<View> ta2 = View::New(ab, 0, 128);

       Handle<JSArrayBufferView> ita1 = v8::Utils::OpenHandle(*ta1);
       Handle<JSArrayBufferView> ita2 = v8::Utils::OpenHandle(*ta2);
       CHECK_EQ(2, CountViews(*iab));
       CHECK(HasViewInWeakList(*iab, *ita1));
       CHECK(HasViewInWeakList(*iab, *ita2));
     }
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
     CHECK_EQ(1, CountViews(*iab));
     Handle<JSArrayBufferView> ita1 = v8::Utils::OpenHandle(*ta1);
     CHECK(HasViewInWeakList(*iab, *ita1));
   }
   isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

   CHECK_EQ(0, CountViews(*iab));
 }


 TEST(Uint8ArrayFromApi) {
   TestViewFromApi<v8::Uint8Array>();
 }


 TEST(Int8ArrayFromApi) {
   TestViewFromApi<v8::Int8Array>();
 }


 TEST(Uint16ArrayFromApi) {
   TestViewFromApi<v8::Uint16Array>();
 }


 TEST(Int16ArrayFromApi) {
   TestViewFromApi<v8::Int16Array>();
 }


 TEST(Uint32ArrayFromApi) {
   TestViewFromApi<v8::Uint32Array>();
 }


 TEST(Int32ArrayFromApi) {
   TestViewFromApi<v8::Int32Array>();
 }


 TEST(Float32ArrayFromApi) {
   TestViewFromApi<v8::Float32Array>();
 }


 TEST(Float64ArrayFromApi) {
   TestViewFromApi<v8::Float64Array>();
 }


 TEST(Uint8ClampedArrayFromApi) {
   TestViewFromApi<v8::Uint8ClampedArray>();
 }


 TEST(DataViewFromApi) {
   TestViewFromApi<v8::DataView>();
 }

 template <typename TypedArray>
 static void TestTypedArrayFromScript(const char* constructor) {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);
   v8::HandleScope scope(context->GetIsolate());
   int start = CountArrayBuffersInWeakList(isolate->heap());
   CompileRun("var ab = new ArrayBuffer(2048);");
   for (int i = 1; i <= 3; i++) {
     // Create 3 typed arrays, make i-th of them garbage,
     // validate correct state of typed array weak list.
     v8::HandleScope s0(context->GetIsolate());
     i::ScopedVector<char> source(2048);

     CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);

     {
       v8::HandleScope s1(context->GetIsolate());
       i::SNPrintF(source,
               "var ta1 = new %s(ab);"
               "var ta2 = new %s(ab);"
               "var ta3 = new %s(ab)",
               constructor, constructor, constructor);

       CompileRun(source.start());
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       v8::Handle<TypedArray> ta1 =
           v8::Handle<TypedArray>::Cast(CompileRun("ta1"));
       v8::Handle<TypedArray> ta2 =
           v8::Handle<TypedArray>::Cast(CompileRun("ta2"));
       v8::Handle<TypedArray> ta3 =
           v8::Handle<TypedArray>::Cast(CompileRun("ta3"));
       CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
       CHECK_EQ(3, CountViews(*iab));
       CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta1)));
       CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta2)));
       CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta3)));
     }

     i::SNPrintF(source, "ta%d = null;", i);
     CompileRun(source.start());
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

     CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);

     {
       v8::HandleScope s2(context->GetIsolate());
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
       CHECK_EQ(2, CountViews(*iab));
       for (int j = 1; j <= 3; j++) {
         if (j == i) continue;
         i::SNPrintF(source, "ta%d", j);
         v8::Handle<TypedArray> ta =
             v8::Handle<TypedArray>::Cast(CompileRun(source.start()));
         CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta)));
       }
     }

     CompileRun("ta1 = null; ta2 = null; ta3 = null;");
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

     CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);

     {
       v8::HandleScope s3(context->GetIsolate());
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
       CHECK_EQ(0, CountViews(*iab));
     }
   }
 }


 TEST(Uint8ArrayFromScript) {
   TestTypedArrayFromScript<v8::Uint8Array>("Uint8Array");
 }


 TEST(Int8ArrayFromScript) {
   TestTypedArrayFromScript<v8::Int8Array>("Int8Array");
 }


 TEST(Uint16ArrayFromScript) {
   TestTypedArrayFromScript<v8::Uint16Array>("Uint16Array");
 }


 TEST(Int16ArrayFromScript) {
   TestTypedArrayFromScript<v8::Int16Array>("Int16Array");
 }


 TEST(Uint32ArrayFromScript) {
   TestTypedArrayFromScript<v8::Uint32Array>("Uint32Array");
 }


 TEST(Int32ArrayFromScript) {
   TestTypedArrayFromScript<v8::Int32Array>("Int32Array");
 }


 TEST(Float32ArrayFromScript) {
   TestTypedArrayFromScript<v8::Float32Array>("Float32Array");
 }


 TEST(Float64ArrayFromScript) {
   TestTypedArrayFromScript<v8::Float64Array>("Float64Array");
 }


 TEST(Uint8ClampedArrayFromScript) {
   TestTypedArrayFromScript<v8::Uint8ClampedArray>("Uint8ClampedArray");
 }


 TEST(DataViewFromScript) {
   TestTypedArrayFromScript<v8::DataView>("DataView");
 }
	// Copyright 2013 the V8 project authors. All rights reserved.
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are
	// met:
	//
	// * Redistributions of source code must retain the above copyright
	// notice, this list of conditions and the following disclaimer.
	// * 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.
	// * Neither the name of Google Inc. nor the names of its
	// contributors may be used to endorse or promote products derived
	// from this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
	// OWNER OR 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.

	#include <stdlib.h>

	#include "src/v8.h"
	#include "src/api.h"
	#include "src/heap.h"
	#include "src/objects.h"

	#include "test/cctest/cctest.h"

	using namespace v8::internal;

	static Isolate* GetIsolateFrom(LocalContext* context) {
	return reinterpret_cast<Isolate>((context)->GetIsolate());
	}


	static int CountArrayBuffersInWeakList(Heap* heap) {
	int count = 0;
	for (Object* o = heap->array_buffers_list();
	!o->IsUndefined();
	o = JSArrayBuffer::cast(o)->weak_next()) {
	count++;
	}
	return count;
	}


	static bool HasArrayBufferInWeakList(Heap* heap, JSArrayBuffer* ab) {
	for (Object* o = heap->array_buffers_list();
	!o->IsUndefined();
	o = JSArrayBuffer::cast(o)->weak_next()) {
	if (ab == o) return true;
	}
	return false;
	}


	static int CountViews(JSArrayBuffer* array_buffer) {
	int count = 0;
	for (Object* o = array_buffer->weak_first_view();
	!o->IsUndefined();
	o = JSArrayBufferView::cast(o)->weak_next()) {
	count++;
	}

	return count;
	}

	static bool HasViewInWeakList(JSArrayBuffer* array_buffer,
	JSArrayBufferView* ta) {
	for (Object* o = array_buffer->weak_first_view();
	!o->IsUndefined();
	o = JSArrayBufferView::cast(o)->weak_next()) {
	if (ta == o) return true;
	}
	return false;
	}


	TEST(WeakArrayBuffersFromApi) {
	v8::V8::Initialize();
	LocalContext context;
	Isolate* isolate = GetIsolateFrom(&context);

	int start = CountArrayBuffersInWeakList(isolate->heap());
	{
	v8::HandleScope s1(context->GetIsolate());
	v8::Handle<v8::ArrayBuffer> ab1 =
	v8::ArrayBuffer::New(context->GetIsolate(), 256);
	{
	v8::HandleScope s2(context->GetIsolate());
	v8::Handle<v8::ArrayBuffer> ab2 =
	v8::ArrayBuffer::New(context->GetIsolate(), 128);

	Handle<JSArrayBuffer> iab1 = v8::Utils::OpenHandle(*ab1);
	Handle<JSArrayBuffer> iab2 = v8::Utils::OpenHandle(*ab2);
	CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()) - start);
	CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab1));
	CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab2));
	}
	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
	CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
	{
	HandleScope scope2(isolate);
	Handle<JSArrayBuffer> iab1 = v8::Utils::OpenHandle(*ab1);

	CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab1));
	}
	}

	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
	CHECK_EQ(start, CountArrayBuffersInWeakList(isolate->heap()));
	}


	TEST(WeakArrayBuffersFromScript) {
	v8::V8::Initialize();
	LocalContext context;
	Isolate* isolate = GetIsolateFrom(&context);
	int start = CountArrayBuffersInWeakList(isolate->heap());

	for (int i = 1; i <= 3; i++) {
	// Create 3 array buffers, make i-th of them garbage,
	// validate correct state of array buffer weak list.
	CHECK_EQ(start, CountArrayBuffersInWeakList(isolate->heap()));
	{
	v8::HandleScope scope(context->GetIsolate());

	{
	v8::HandleScope s1(context->GetIsolate());
	CompileRun("var ab1 = new ArrayBuffer(256);"
	"var ab2 = new ArrayBuffer(256);"
	"var ab3 = new ArrayBuffer(256);");
	v8::Handle<v8::ArrayBuffer> ab1 =
	v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab1"));
	v8::Handle<v8::ArrayBuffer> ab2 =
	v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab2"));
	v8::Handle<v8::ArrayBuffer> ab3 =
	v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab3"));

	CHECK_EQ(3, CountArrayBuffersInWeakList(isolate->heap()) - start);
	CHECK(HasArrayBufferInWeakList(isolate->heap(),
	v8::Utils::OpenHandle(ab1)));
	CHECK(HasArrayBufferInWeakList(isolate->heap(),
	v8::Utils::OpenHandle(ab2)));
	CHECK(HasArrayBufferInWeakList(isolate->heap(),
	v8::Utils::OpenHandle(ab3)));
	}

	i::ScopedVector<char> source(1024);
	i::SNPrintF(source, "ab%d = null;", i);
	CompileRun(source.start());
	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

	CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()) - start);

	{
	v8::HandleScope s2(context->GetIsolate());
	for (int j = 1; j <= 3; j++) {
	if (j == i) continue;
	i::SNPrintF(source, "ab%d", j);
	v8::Handle<v8::ArrayBuffer> ab =
	v8::Handle<v8::ArrayBuffer>::Cast(CompileRun(source.start()));
	CHECK(HasArrayBufferInWeakList(isolate->heap(),
	v8::Utils::OpenHandle(ab)));
	}
	}

	CompileRun("ab1 = null; ab2 = null; ab3 = null;");
	}

	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
	CHECK_EQ(start, CountArrayBuffersInWeakList(isolate->heap()));
	}
	}

	template <typename View>
	void TestViewFromApi() {
	v8::V8::Initialize();
	LocalContext context;
	Isolate* isolate = GetIsolateFrom(&context);

	v8::HandleScope s1(context->GetIsolate());
	v8::Handle<v8::ArrayBuffer> ab =
	v8::ArrayBuffer::New(context->GetIsolate(), 2048);
	Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
	{
	v8::HandleScope s2(context->GetIsolate());
	v8::Handle<View> ta1 = View::New(ab, 0, 256);
	{
	v8::HandleScope s3(context->GetIsolate());
	v8::Handle<View> ta2 = View::New(ab, 0, 128);

	Handle<JSArrayBufferView> ita1 = v8::Utils::OpenHandle(*ta1);
	Handle<JSArrayBufferView> ita2 = v8::Utils::OpenHandle(*ta2);
	CHECK_EQ(2, CountViews(*iab));
	CHECK(HasViewInWeakList(iab, ita1));
	CHECK(HasViewInWeakList(iab, ita2));
	}
	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
	CHECK_EQ(1, CountViews(*iab));
	Handle<JSArrayBufferView> ita1 = v8::Utils::OpenHandle(*ta1);
	CHECK(HasViewInWeakList(iab, ita1));
	}
	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

	CHECK_EQ(0, CountViews(*iab));
	}


	TEST(Uint8ArrayFromApi) {
	TestViewFromApi<v8::Uint8Array>();
	}


	TEST(Int8ArrayFromApi) {
	TestViewFromApi<v8::Int8Array>();
	}


	TEST(Uint16ArrayFromApi) {
	TestViewFromApi<v8::Uint16Array>();
	}


	TEST(Int16ArrayFromApi) {
	TestViewFromApi<v8::Int16Array>();
	}


	TEST(Uint32ArrayFromApi) {
	TestViewFromApi<v8::Uint32Array>();
	}


	TEST(Int32ArrayFromApi) {
	TestViewFromApi<v8::Int32Array>();
	}


	TEST(Float32ArrayFromApi) {
	TestViewFromApi<v8::Float32Array>();
	}


	TEST(Float64ArrayFromApi) {
	TestViewFromApi<v8::Float64Array>();
	}


	TEST(Uint8ClampedArrayFromApi) {
	TestViewFromApi<v8::Uint8ClampedArray>();
	}


	TEST(DataViewFromApi) {
	TestViewFromApi<v8::DataView>();
	}

	template <typename TypedArray>
	static void TestTypedArrayFromScript(const char* constructor) {
	v8::V8::Initialize();
	LocalContext context;
	Isolate* isolate = GetIsolateFrom(&context);
	v8::HandleScope scope(context->GetIsolate());
	int start = CountArrayBuffersInWeakList(isolate->heap());
	CompileRun("var ab = new ArrayBuffer(2048);");
	for (int i = 1; i <= 3; i++) {
	// Create 3 typed arrays, make i-th of them garbage,
	// validate correct state of typed array weak list.
	v8::HandleScope s0(context->GetIsolate());
	i::ScopedVector<char> source(2048);

	CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);

	{
	v8::HandleScope s1(context->GetIsolate());
	i::SNPrintF(source,
	"var ta1 = new %s(ab);"
	"var ta2 = new %s(ab);"
	"var ta3 = new %s(ab)",
	constructor, constructor, constructor);

	CompileRun(source.start());
	v8::Handle<v8::ArrayBuffer> ab =
	v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
	v8::Handle<TypedArray> ta1 =
	v8::Handle<TypedArray>::Cast(CompileRun("ta1"));
	v8::Handle<TypedArray> ta2 =
	v8::Handle<TypedArray>::Cast(CompileRun("ta2"));
	v8::Handle<TypedArray> ta3 =
	v8::Handle<TypedArray>::Cast(CompileRun("ta3"));
	CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
	Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
	CHECK_EQ(3, CountViews(*iab));
	CHECK(HasViewInWeakList(iab, v8::Utils::OpenHandle(*ta1)));
	CHECK(HasViewInWeakList(iab, v8::Utils::OpenHandle(*ta2)));
	CHECK(HasViewInWeakList(iab, v8::Utils::OpenHandle(*ta3)));
	}

	i::SNPrintF(source, "ta%d = null;", i);
	CompileRun(source.start());
	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

	CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);

	{
	v8::HandleScope s2(context->GetIsolate());
	v8::Handle<v8::ArrayBuffer> ab =
	v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
	Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
	CHECK_EQ(2, CountViews(*iab));
	for (int j = 1; j <= 3; j++) {
	if (j == i) continue;
	i::SNPrintF(source, "ta%d", j);
	v8::Handle<TypedArray> ta =
	v8::Handle<TypedArray>::Cast(CompileRun(source.start()));
	CHECK(HasViewInWeakList(iab, v8::Utils::OpenHandle(*ta)));
	}
	}

	CompileRun("ta1 = null; ta2 = null; ta3 = null;");
	isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);

	CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);

	{
	v8::HandleScope s3(context->GetIsolate());
	v8::Handle<v8::ArrayBuffer> ab =
	v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
	Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
	CHECK_EQ(0, CountViews(*iab));
	}
	}
	}


	TEST(Uint8ArrayFromScript) {
	TestTypedArrayFromScript<v8::Uint8Array>("Uint8Array");
	}


	TEST(Int8ArrayFromScript) {
	TestTypedArrayFromScript<v8::Int8Array>("Int8Array");
	}


	TEST(Uint16ArrayFromScript) {
	TestTypedArrayFromScript<v8::Uint16Array>("Uint16Array");
	}


	TEST(Int16ArrayFromScript) {
	TestTypedArrayFromScript<v8::Int16Array>("Int16Array");
	}


	TEST(Uint32ArrayFromScript) {
	TestTypedArrayFromScript<v8::Uint32Array>("Uint32Array");
	}


	TEST(Int32ArrayFromScript) {
	TestTypedArrayFromScript<v8::Int32Array>("Int32Array");
	}


	TEST(Float32ArrayFromScript) {
	TestTypedArrayFromScript<v8::Float32Array>("Float32Array");
	}


	TEST(Float64ArrayFromScript) {
	TestTypedArrayFromScript<v8::Float64Array>("Float64Array");
	}


	TEST(Uint8ClampedArrayFromScript) {
	TestTypedArrayFromScript<v8::Uint8ClampedArray>("Uint8ClampedArray");
	}


	TEST(DataViewFromScript) {
	TestTypedArrayFromScript<v8::DataView>("DataView");
	}