1b00451f57
This keeps dying maps alive for FLAG_retain_maps_for_n_gc garbage collections to increase chances of them being reused for new objects in future and decrease number of deoptimizations. BUG=v8:3664 LOG=N TEST=cctest/test-heap/MapRetaining Review URL: https://codereview.chromium.org/980523004 Cr-Commit-Position: refs/heads/master@{#27040}
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stdlib.h>
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#include "src/v8.h"
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#include "src/factory.h"
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#include "test/cctest/cctest.h"
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namespace {
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using namespace v8::internal;
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TEST(ArrayList) {
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LocalContext context;
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Isolate* isolate = CcTest::i_isolate();
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HandleScope scope(isolate);
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Handle<ArrayList> array(
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ArrayList::cast(isolate->heap()->empty_fixed_array()));
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CHECK_EQ(0, array->Length());
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array = ArrayList::Add(array, handle(Smi::FromInt(100), isolate));
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CHECK_EQ(1, array->Length());
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CHECK_EQ(100, Smi::cast(array->Get(0))->value());
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array = ArrayList::Add(array, handle(Smi::FromInt(200), isolate),
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handle(Smi::FromInt(300), isolate));
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CHECK_EQ(3, array->Length());
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CHECK_EQ(100, Smi::cast(array->Get(0))->value());
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CHECK_EQ(200, Smi::cast(array->Get(1))->value());
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CHECK_EQ(300, Smi::cast(array->Get(2))->value());
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array->Set(2, Smi::FromInt(400));
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CHECK_EQ(400, Smi::cast(array->Get(2))->value());
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array->Clear(2, isolate->heap()->undefined_value());
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array->SetLength(2);
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CHECK_EQ(2, array->Length());
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CHECK_EQ(100, Smi::cast(array->Get(0))->value());
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CHECK_EQ(200, Smi::cast(array->Get(1))->value());
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}
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}
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