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
|
/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef WebCache_h
#define WebCache_h
#include "platform/WebCommon.h"
namespace WebKit {
// An interface to query and configure WebKit's resource cache.
class WebCache {
public:
struct UsageStats {
// Capacities.
size_t minDeadCapacity;
size_t maxDeadCapacity;
size_t capacity;
// Utilization.
size_t liveSize;
size_t deadSize;
};
// A struct mirroring WebCore::MemoryCache::TypeStatistic.
struct ResourceTypeStat {
size_t count;
size_t size;
size_t liveSize;
size_t decodedSize;
};
// A struct mirroring WebCore::MemoryCache::Statistics.
struct ResourceTypeStats {
ResourceTypeStat images;
ResourceTypeStat cssStyleSheets;
ResourceTypeStat scripts;
ResourceTypeStat xslStyleSheets;
ResourceTypeStat fonts;
};
// Sets the capacities of the resource cache, evicting objects as necessary.
WEBKIT_EXPORT static void setCapacities(size_t minDeadCapacity,
size_t maxDeadCapacity,
size_t capacity);
// Clears the cache (as much as possible; some resources may not be
// cleared if they are actively referenced). Note that this method
// only removes resources from live list, w/o releasing cache memory.
WEBKIT_EXPORT static void clear();
// Prunes resource cache. Destroys decoded images data and returns
// memory to the system.
WEBKIT_EXPORT static void prune();
// Gets the usage statistics from the resource cache.
WEBKIT_EXPORT static void getUsageStats(UsageStats*);
// Get usage stats about the resource cache.
WEBKIT_EXPORT static void getResourceTypeStats(ResourceTypeStats*);
private:
WebCache(); // Not intended to be instanced.
};
} // namespace WebKit
#endif
|
