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
|
/*
* Copyright (C) 2008 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. ``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
* 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 "CachedResourceHandle.h"
#include "CachedResource.h"
namespace WebCore {
CachedResourceHandleBase::CachedResourceHandleBase()
: m_resource(nullptr)
{
}
CachedResourceHandleBase::CachedResourceHandleBase(CachedResource& resource)
: m_resource(&resource)
{
m_resource->registerHandle(this);
}
CachedResourceHandleBase::CachedResourceHandleBase(CachedResource* resource)
: m_resource(resource)
{
if (m_resource)
m_resource->registerHandle(this);
}
CachedResourceHandleBase::CachedResourceHandleBase(const CachedResourceHandleBase& other)
: m_resource(other.m_resource)
{
if (m_resource)
m_resource->registerHandle(this);
}
CachedResourceHandleBase::~CachedResourceHandleBase()
{
if (m_resource)
m_resource->unregisterHandle(this);
}
CachedResource* CachedResourceHandleBase::get() const
{
return m_resource.get();
}
void CachedResourceHandleBase::setResource(CachedResource* resource)
{
if (resource == m_resource)
return;
if (m_resource)
m_resource->unregisterHandle(this);
m_resource = resource;
if (m_resource)
m_resource->registerHandle(this);
}
}
|
