1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* Copyright (C) 2026 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Test.h"
#if USE(CG)
#include <CoreGraphics/CGImage.h>
#endif
#include <WebCore/ShareableBitmap.h>
#if OS(DARWIN)
namespace TestWebKitAPI {
static void fillTestPattern(std::span<uint8_t> data, size_t seed)
{
for (size_t i = 0; i < 5 && i < data.size(); ++i)
data[i] = seed + i;
if (data.size() < 12)
return;
for (size_t i = 1; i < 6; ++i)
data[data.size() - i] = seed + i + 77u;
auto mid = data.size() / 2;
data[mid] = seed + 99;
}
static void expectTestPattern(std::span<uint8_t> data, size_t seed)
{
for (size_t i = 0; i < 5 && i < data.size(); ++i)
EXPECT_EQ(data[i], static_cast<uint8_t>(seed + i));
if (data.size() < 12)
return;
for (size_t i = 1; i < 6; ++i)
EXPECT_EQ(data[data.size() - i], static_cast<uint8_t>(seed + i + 77u));
auto mid = data.size() / 2;
EXPECT_EQ(data[mid], static_cast<uint8_t>(seed + 99));
}
TEST(ShareableBitmap, ensureCOWBothMapsRWSenderWrite)
{
WebCore::ShareableBitmapConfiguration configuration = { WebCore::IntSize(100, 100) };
auto bitmap = WebCore::ShareableBitmap::create(configuration);
fillTestPattern(bitmap->mutableSpan(), 0);
expectTestPattern(bitmap->mutableSpan(), 0);
auto handle = bitmap->createHandle(WebCore::SharedMemory::Protection::ReadWrite);
auto bitmap2 = WebCore::ShareableBitmap::create(WTF::move(*handle));
expectTestPattern(bitmap2->mutableSpan(), 0);
fillTestPattern(bitmap->mutableSpan(), 1);
expectTestPattern(bitmap->mutableSpan(), 1);
expectTestPattern(bitmap2->mutableSpan(), 0);
}
TEST(ShareableBitmap, ensureCOWBothMapsRWSenderWriteReceiverWrite)
{
WebCore::ShareableBitmapConfiguration configuration = { WebCore::IntSize(100, 100) };
auto bitmap = WebCore::ShareableBitmap::create(configuration);
fillTestPattern(bitmap->mutableSpan(), 0);
expectTestPattern(bitmap->mutableSpan(), 0);
auto handle = bitmap->createHandle(WebCore::SharedMemory::Protection::ReadWrite);
auto bitmap2 = WebCore::ShareableBitmap::create(WTF::move(*handle));
expectTestPattern(bitmap2->mutableSpan(), 0);
fillTestPattern(bitmap2->mutableSpan(), 1);
expectTestPattern(bitmap->mutableSpan(), 0);
expectTestPattern(bitmap2->mutableSpan(), 1);
}
TEST(ShareableBitmap, ensureCOWBothMapsROSenderWrite)
{
WebCore::ShareableBitmapConfiguration configuration = { WebCore::IntSize(100, 100) };
auto bitmap = WebCore::ShareableBitmap::create(configuration);
fillTestPattern(bitmap->mutableSpan(), 0);
expectTestPattern(bitmap->mutableSpan(), 0);
auto handle = bitmap->createReadOnlyHandle();
auto bitmap2 = *WebCore::ShareableBitmap::createReadOnly(WTF::move(handle));
expectTestPattern(bitmap2->mutableSpan(), 0);
fillTestPattern(bitmap->mutableSpan(), 1);
expectTestPattern(bitmap->mutableSpan(), 1);
expectTestPattern(bitmap2->mutableSpan(), 0);
}
}
#endif // OS(DARWIN)
|
