third_party/WebKit/Source/web/WebCache.cpp

   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 "public/web/WebCache.h"
  33
  34 #include "core/fetch/MemoryCache.h"
  35
  36 namespace blink {
  37
  38 // A helper method for coverting a MemoryCache::TypeStatistic to a
  39 // WebCache::ResourceTypeStat.
  40 static void ToResourceTypeStat(const MemoryCache::TypeStatistic& from,
  41                                WebCache::ResourceTypeStat& to)
  42 {
  43     to.count = from.count;
  44     to.size = from.size;
  45     to.liveSize = from.liveSize;
  46     to.decodedSize = from.decodedSize;
  47     to.purgeableSize = from.purgedSize;
  48     to.purgedSize = from.purgedSize;
  49 }
  50
  51 void WebCache::setCapacities(
  52     size_t minDeadCapacity, size_t maxDeadCapacity, size_t capacity)
  53 {
  54     MemoryCache* cache = memoryCache();
  55     if (cache)
  56         cache->setCapacities(static_cast<unsigned>(minDeadCapacity), static_cast<unsigned>(maxDeadCapacity), static_cast<unsigned>(capacity));
  57 }
  58
  59 void WebCache::clear()
  60 {
  61     MemoryCache* cache = memoryCache();
  62     if (cache)
  63         cache->evictResources();
  64 }
  65
  66 void WebCache::getUsageStats(UsageStats* result)
  67 {
  68     ASSERT(result);
  69
  70     MemoryCache* cache = memoryCache();
  71     if (cache) {
  72         result->minDeadCapacity = cache->minDeadCapacity();
  73         result->maxDeadCapacity = cache->maxDeadCapacity();
  74         result->capacity = cache->capacity();
  75         result->liveSize = cache->liveSize();
  76         result->deadSize = cache->deadSize();
  77     } else
  78         memset(result, 0, sizeof(UsageStats));
  79 }
  80
  81 void WebCache::getResourceTypeStats(ResourceTypeStats* result)
  82 {
  83     MemoryCache* cache = memoryCache();
  84     if (cache) {
  85         MemoryCache::Statistics stats = cache->getStatistics();
  86         ToResourceTypeStat(stats.images, result->images);
  87         ToResourceTypeStat(stats.cssStyleSheets, result->cssStyleSheets);
  88         ToResourceTypeStat(stats.scripts, result->scripts);
  89         ToResourceTypeStat(stats.xslStyleSheets, result->xslStyleSheets);
  90         ToResourceTypeStat(stats.fonts, result->fonts);
  91         ToResourceTypeStat(stats.other, result->other);
  92     } else
  93         memset(result, 0, sizeof(WebCache::ResourceTypeStats));
  94 }
  95
  96 void WebCache::pruneAll()
  97 {
  98     MemoryCache* cache = memoryCache();
  99     if (cache)
 100         cache->pruneAll();
 101 }
 102
 103 }  // namespace blink