1/*
2 * Copyright (C) 2017 Metrological Group B.V.
3 * Copyright (C) 2017 Igalia S.L.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following
13 * disclaimer in the documentation and/or other materials provided
14 * with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "config.h"
30#include "NicosiaBuffer.h"
31
32#include <wtf/FastMalloc.h>
33
34namespace Nicosia {
35
36Ref<Buffer> Buffer::create(const WebCore::IntSize& size, Flags flags)
37{
38 return adoptRef(*new Buffer(size, flags));
39}
40
41Buffer::Buffer(const WebCore::IntSize& size, Flags flags)
42 : m_size(size)
43 , m_flags(flags)
44{
45 auto checkedArea = size.area() * 4;
46 unsigned char* bufferData;
47 if (!tryFastZeroedMalloc(checkedArea.unsafeGet()).getValue(bufferData))
48 return;
49
50 m_data = adoptMallocPtr(bufferData);
51}
52
53Buffer::~Buffer() = default;
54
55void Buffer::beginPainting()
56{
57 LockHolder locker(m_painting.lock);
58 ASSERT(m_painting.state == PaintingState::Complete);
59 m_painting.state = PaintingState::InProgress;
60}
61
62void Buffer::completePainting()
63{
64 LockHolder locker(m_painting.lock);
65 ASSERT(m_painting.state == PaintingState::InProgress);
66 m_painting.state = PaintingState::Complete;
67 m_painting.condition.notifyOne();
68}
69
70void Buffer::waitUntilPaintingComplete()
71{
72 LockHolder locker(m_painting.lock);
73 m_painting.condition.wait(m_painting.lock,
74 [this] { return m_painting.state == PaintingState::Complete; });
75}
76
77} // namespace Nicosia
78