77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
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// Copyright 2017 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 "src/zone/zone-allocator.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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namespace internal {
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TEST(RecyclingZoneAllocator, ReuseSameSize) {
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AccountingAllocator accounting_allocator;
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Zone zone(&accounting_allocator, ZONE_NAME);
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RecyclingZoneAllocator<int> zone_allocator(&zone);
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int* allocated = zone_allocator.allocate(10);
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zone_allocator.deallocate(allocated, 10);
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CHECK_EQ(zone_allocator.allocate(10), allocated);
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}
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TEST(RecyclingZoneAllocator, ReuseSmallerSize) {
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AccountingAllocator accounting_allocator;
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Zone zone(&accounting_allocator, ZONE_NAME);
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RecyclingZoneAllocator<int> zone_allocator(&zone);
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int* allocated = zone_allocator.allocate(100);
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zone_allocator.deallocate(allocated, 100);
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CHECK_EQ(zone_allocator.allocate(10), allocated);
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}
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TEST(RecyclingZoneAllocator, DontReuseTooSmallSize) {
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AccountingAllocator accounting_allocator;
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Zone zone(&accounting_allocator, ZONE_NAME);
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RecyclingZoneAllocator<int> zone_allocator(&zone);
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// The sizeof(FreeBlock) will be larger than a single int, so we can't keep
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// store the free list in the deallocated block.
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int* allocated = zone_allocator.allocate(1);
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zone_allocator.deallocate(allocated, 1);
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CHECK_NE(zone_allocator.allocate(1), allocated);
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}
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TEST(RecyclingZoneAllocator, ReuseMultipleSize) {
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AccountingAllocator accounting_allocator;
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Zone zone(&accounting_allocator, ZONE_NAME);
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RecyclingZoneAllocator<int> zone_allocator(&zone);
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int* allocated1 = zone_allocator.allocate(10);
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int* allocated2 = zone_allocator.allocate(20);
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int* allocated3 = zone_allocator.allocate(30);
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zone_allocator.deallocate(allocated1, 10);
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zone_allocator.deallocate(allocated2, 20);
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zone_allocator.deallocate(allocated3, 30);
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CHECK_EQ(zone_allocator.allocate(10), allocated3);
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CHECK_EQ(zone_allocator.allocate(10), allocated2);
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CHECK_EQ(zone_allocator.allocate(10), allocated1);
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}
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TEST(RecyclingZoneAllocator, DontChainSmallerSizes) {
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AccountingAllocator accounting_allocator;
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Zone zone(&accounting_allocator, ZONE_NAME);
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RecyclingZoneAllocator<int> zone_allocator(&zone);
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int* allocated1 = zone_allocator.allocate(10);
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int* allocated2 = zone_allocator.allocate(5);
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int* allocated3 = zone_allocator.allocate(10);
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zone_allocator.deallocate(allocated1, 10);
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zone_allocator.deallocate(allocated2, 5);
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zone_allocator.deallocate(allocated3, 10);
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CHECK_EQ(zone_allocator.allocate(5), allocated3);
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CHECK_EQ(zone_allocator.allocate(5), allocated1);
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CHECK_NE(zone_allocator.allocate(5), allocated2);
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}
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} // namespace internal
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} // namespace v8
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