1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "platform/PODArena.h"
28
29#include "platform/testing/ArenaTestHelpers.h"
30#include "wtf/FastMalloc.h"
31#include "wtf/RefPtr.h"
32
33#include <algorithm>
34#include <gtest/gtest.h>
35
36namespace blink {
37
38using ArenaTestHelpers::TrackedAllocator;
39
40namespace {
41
42// A couple of simple structs to allocate.
43struct TestClass1 {
44    TestClass1()
45        : x(0), y(0), z(0), w(1) { }
46
47    float x, y, z, w;
48};
49
50struct TestClass2 {
51    TestClass2()
52        : a(1), b(2), c(3), d(4) { }
53
54    float a, b, c, d;
55};
56
57} // anonymous namespace
58
59class PODArenaTest : public testing::Test {
60};
61
62// Make sure the arena can successfully allocate from more than one
63// region.
64TEST_F(PODArenaTest, CanAllocateFromMoreThanOneRegion)
65{
66    RefPtr<TrackedAllocator> allocator = TrackedAllocator::create();
67    RefPtr<PODArena> arena = PODArena::create(allocator);
68    int numIterations = 10 * PODArena::DefaultChunkSize / sizeof(TestClass1);
69    for (int i = 0; i < numIterations; ++i)
70        arena->allocateObject<TestClass1>();
71    EXPECT_GT(allocator->numRegions(), 1);
72}
73
74// Make sure the arena frees all allocated regions during destruction.
75TEST_F(PODArenaTest, FreesAllAllocatedRegions)
76{
77    RefPtr<TrackedAllocator> allocator = TrackedAllocator::create();
78    {
79        RefPtr<PODArena> arena = PODArena::create(allocator);
80        for (int i = 0; i < 3; i++)
81            arena->allocateObject<TestClass1>();
82        EXPECT_GT(allocator->numRegions(), 0);
83    }
84    EXPECT_TRUE(allocator->isEmpty());
85}
86
87// Make sure the arena runs constructors of the objects allocated within.
88TEST_F(PODArenaTest, RunsConstructors)
89{
90    RefPtr<PODArena> arena = PODArena::create();
91    for (int i = 0; i < 10000; i++) {
92        TestClass1* tc1 = arena->allocateObject<TestClass1>();
93        EXPECT_EQ(0, tc1->x);
94        EXPECT_EQ(0, tc1->y);
95        EXPECT_EQ(0, tc1->z);
96        EXPECT_EQ(1, tc1->w);
97        TestClass2* tc2 = arena->allocateObject<TestClass2>();
98        EXPECT_EQ(1, tc2->a);
99        EXPECT_EQ(2, tc2->b);
100        EXPECT_EQ(3, tc2->c);
101        EXPECT_EQ(4, tc2->d);
102    }
103}
104
105} // namespace blink
106