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
37 namespace WebCore {
38
39 using ArenaTestHelpers::TrackedAllocator;
40
41 namespace {
42
43 // A couple of simple structs to allocate.
44 struct TestClass1 {
TestClass1WebCore::__anon7eb7ed510111::TestClass145 TestClass1()
46 : x(0), y(0), z(0), w(1) { }
47
48 float x, y, z, w;
49 };
50
51 struct TestClass2 {
TestClass2WebCore::__anon7eb7ed510111::TestClass252 TestClass2()
53 : a(1), b(2), c(3), d(4) { }
54
55 float a, b, c, d;
56 };
57
58 } // anonymous namespace
59
60 class PODArenaTest : public testing::Test {
61 };
62
63 // Make sure the arena can successfully allocate from more than one
64 // region.
TEST_F(PODArenaTest,CanAllocateFromMoreThanOneRegion)65 TEST_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.
TEST_F(PODArenaTest,FreesAllAllocatedRegions)76 TEST_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.
TEST_F(PODArenaTest,RunsConstructors)89 TEST_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