diff -r 000000000000 -r 4f2f89ce4247 WebKit/chromium/public/WebCache.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WebKit/chromium/public/WebCache.h Fri Sep 17 09:02:29 2010 +0300 @@ -0,0 +1,89 @@ +/* + * 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 "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::Cache::TypeStatistic. + struct ResourceTypeStat { + size_t count; + size_t size; + size_t liveSize; + size_t decodedSize; + }; + + // A struct mirroring WebCore::Cache::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_API 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). + WEBKIT_API static void clear(); + + // Gets the usage statistics from the resource cache. + WEBKIT_API static void getUsageStats(UsageStats*); + + // Get usage stats about the resource cache. + WEBKIT_API static void getResourceTypeStats(ResourceTypeStats*); + +private: + WebCache(); // Not intended to be instanced. +}; + +} // namespace WebKit + +#endif