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92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
/*
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* Copyright (C) 2009 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef WebCache_h
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#define WebCache_h
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#include "../platform/WebCommon.h"
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namespace blink {
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// An interface to query and configure WebKit's resource cache.
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class WebCache {
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public:
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struct UsageStats {
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// Capacities.
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size_t minDeadCapacity;
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size_t maxDeadCapacity;
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size_t capacity;
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// Utilization.
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size_t liveSize;
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size_t deadSize;
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};
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// A struct mirroring blink::MemoryCache::TypeStatistic.
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struct ResourceTypeStat {
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size_t count;
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size_t size;
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size_t liveSize;
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size_t decodedSize;
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};
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// A struct mirroring blink::MemoryCache::Statistics.
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struct ResourceTypeStats {
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ResourceTypeStat images;
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ResourceTypeStat cssStyleSheets;
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ResourceTypeStat scripts;
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ResourceTypeStat xslStyleSheets;
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ResourceTypeStat fonts;
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ResourceTypeStat other;
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};
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// Sets the capacities of the resource cache, evicting objects as necessary.
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BLINK_EXPORT static void setCapacities(size_t minDeadCapacity,
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size_t maxDeadCapacity,
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size_t capacity);
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// Clears the cache (as much as possible; some resources may not be
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// cleared if they are actively referenced). Note that this method
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// only removes resources from live list, w/o releasing cache memory.
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BLINK_EXPORT static void clear();
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// Gets the usage statistics from the resource cache.
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BLINK_EXPORT static void getUsageStats(UsageStats*);
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// Get usage stats about the resource cache.
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BLINK_EXPORT static void getResourceTypeStats(ResourceTypeStats*);
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private:
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WebCache(); // Not intended to be instanced.
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};
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} // namespace blink
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#endif
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