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1 /* | |
2 * Copyright (C) 2009 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 are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #ifndef WebCache_h | |
32 #define WebCache_h | |
33 | |
34 #include "WebCommon.h" | |
35 | |
36 namespace WebKit { | |
37 | |
38 // An interface to query and configure WebKit's resource cache. | |
39 class WebCache { | |
40 public: | |
41 struct UsageStats { | |
42 // Capacities. | |
43 size_t minDeadCapacity; | |
44 size_t maxDeadCapacity; | |
45 size_t capacity; | |
46 // Utilization. | |
47 size_t liveSize; | |
48 size_t deadSize; | |
49 }; | |
50 | |
51 // A struct mirroring WebCore::Cache::TypeStatistic. | |
52 struct ResourceTypeStat { | |
53 size_t count; | |
54 size_t size; | |
55 size_t liveSize; | |
56 size_t decodedSize; | |
57 }; | |
58 | |
59 // A struct mirroring WebCore::Cache::Statistics. | |
60 struct ResourceTypeStats { | |
61 ResourceTypeStat images; | |
62 ResourceTypeStat cssStyleSheets; | |
63 ResourceTypeStat scripts; | |
64 ResourceTypeStat xslStyleSheets; | |
65 ResourceTypeStat fonts; | |
66 }; | |
67 | |
68 // Sets the capacities of the resource cache, evicting objects as necessary. | |
69 WEBKIT_API static void setCapacities(size_t minDeadCapacity, | |
70 size_t maxDeadCapacity, | |
71 size_t capacity); | |
72 | |
73 // Clears the cache (as much as possible; some resources may not be | |
74 // cleared if they are actively referenced). | |
75 WEBKIT_API static void clear(); | |
76 | |
77 // Gets the usage statistics from the resource cache. | |
78 WEBKIT_API static void getUsageStats(UsageStats*); | |
79 | |
80 // Get usage stats about the resource cache. | |
81 WEBKIT_API static void getResourceTypeStats(ResourceTypeStats*); | |
82 | |
83 private: | |
84 WebCache(); // Not intended to be instanced. | |
85 }; | |
86 | |
87 } // namespace WebKit | |
88 | |
89 #endif | |
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