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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 #include "config.h"
     32 #include "WebCache.h"
     33 
     34 #include "core/fetch/MemoryCache.h"
     35 
     36 using WebCore::MemoryCache;
     37 
     38 namespace blink {
     39 
     40 // A helper method for coverting a MemoryCache::TypeStatistic to a
     41 // WebCache::ResourceTypeStat.
     42 static void ToResourceTypeStat(const MemoryCache::TypeStatistic& from,
     43                                WebCache::ResourceTypeStat& to)
     44 {
     45     to.count = static_cast<size_t>(from.count);
     46     to.size = static_cast<size_t>(from.size);
     47     to.liveSize = static_cast<size_t>(from.liveSize);
     48     to.decodedSize = static_cast<size_t>(from.decodedSize);
     49 }
     50 
     51 void WebCache::setCapacities(
     52     size_t minDeadCapacity, size_t maxDeadCapacity, size_t capacity)
     53 {
     54     MemoryCache* cache = WebCore::memoryCache();
     55     if (cache)
     56         cache->setCapacities(static_cast<unsigned int>(minDeadCapacity),
     57                              static_cast<unsigned int>(maxDeadCapacity),
     58                              static_cast<unsigned int>(capacity));
     59 }
     60 
     61 void WebCache::clear()
     62 {
     63     MemoryCache* cache = WebCore::memoryCache();
     64     if (cache)
     65         cache->evictResources();
     66 }
     67 
     68 void WebCache::getUsageStats(UsageStats* result)
     69 {
     70     ASSERT(result);
     71 
     72     MemoryCache* cache = WebCore::memoryCache();
     73     if (cache) {
     74         result->minDeadCapacity = cache->minDeadCapacity();
     75         result->maxDeadCapacity = cache->maxDeadCapacity();
     76         result->capacity = cache->capacity();
     77         result->liveSize = cache->liveSize();
     78         result->deadSize = cache->deadSize();
     79     } else
     80         memset(result, 0, sizeof(UsageStats));
     81 }
     82 
     83 void WebCache::getResourceTypeStats(ResourceTypeStats* result)
     84 {
     85     MemoryCache* cache = WebCore::memoryCache();
     86     if (cache) {
     87         MemoryCache::Statistics stats = cache->getStatistics();
     88         ToResourceTypeStat(stats.images, result->images);
     89         ToResourceTypeStat(stats.cssStyleSheets, result->cssStyleSheets);
     90         ToResourceTypeStat(stats.scripts, result->scripts);
     91         ToResourceTypeStat(stats.xslStyleSheets, result->xslStyleSheets);
     92         ToResourceTypeStat(stats.fonts, result->fonts);
     93     } else
     94         memset(result, 0, sizeof(WebCache::ResourceTypeStats));
     95 }
     96 
     97 }  // namespace blink
     98