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
28#include "PODArena.h"
29
30#include "ArenaTestHelpers.h"
31#include <algorithm>
32#include <gtest/gtest.h>
33#include <wtf/FastMalloc.h>
34#include <wtf/RefPtr.h>
35#include <wtf/Vector.h>
36
37namespace WebCore {
38
39using ArenaTestHelpers::TrackedAllocator;
40
41namespace {
42
43// A couple of simple structs to allocate.
44struct TestClass1 {
45    TestClass1()
46        : x(0), y(0), z(0), w(1) { }
47
48    float x, y, z, w;
49};
50
51struct TestClass2 {
52    TestClass2()
53        : a(1), b(2), c(3), d(4) { }
54
55    float a, b, c, d;
56};
57
58} // anonymous namespace
59
60class PODArenaTest : public testing::Test {
61};
62
63// Make sure the arena can successfully allocate from more than one
64// region.
65TEST_F(PODArenaTest, CanAllocateFromMoreThanOneRegion)
66{
67    RefPtr<TrackedAllocator> allocator = TrackedAllocator::create();
68    RefPtr<PODArena> arena = PODArena::create(allocator);
69    int numIterations = 10 * PODArena::DefaultChunkSize / sizeof(TestClass1);
70    for (int i = 0; i < numIterations; ++i)
71        arena->allocateObject<TestClass1>();
72    EXPECT_GT(allocator->numRegions(), 1);
73}
74
75// Make sure the arena frees all allocated regions during destruction.
76TEST_F(PODArenaTest, FreesAllAllocatedRegions)
77{
78    RefPtr<TrackedAllocator> allocator = TrackedAllocator::create();
79    {
80        RefPtr<PODArena> arena = PODArena::create(allocator);
81        for (int i = 0; i < 3; i++)
82            arena->allocateObject<TestClass1>();
83        EXPECT_GT(allocator->numRegions(), 0);
84    }
85    EXPECT_TRUE(allocator->isEmpty());
86}
87
88// Make sure the arena runs constructors of the objects allocated within.
89TEST_F(PODArenaTest, RunsConstructors)
90{
91    RefPtr<PODArena> arena = PODArena::create();
92    for (int i = 0; i < 10000; i++) {
93        TestClass1* tc1 = arena->allocateObject<TestClass1>();
94        EXPECT_EQ(0, tc1->x);
95        EXPECT_EQ(0, tc1->y);
96        EXPECT_EQ(0, tc1->z);
97        EXPECT_EQ(1, tc1->w);
98        TestClass2* tc2 = arena->allocateObject<TestClass2>();
99        EXPECT_EQ(1, tc2->a);
100        EXPECT_EQ(2, tc2->b);
101        EXPECT_EQ(3, tc2->c);
102        EXPECT_EQ(4, tc2->d);
103    }
104}
105
106} // namespace WebCore
107