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      1 /*
      2  * Copyright (C) 2006 Apple Computer, 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #import "WebCache.h"
     27 
     28 #import "WebNSObjectExtras.h"
     29 #import "WebPreferences.h"
     30 #import "WebSystemInterface.h"
     31 #import "WebView.h"
     32 #import "WebViewInternal.h"
     33 #import <WebCore/ApplicationCacheStorage.h>
     34 #import <WebCore/MemoryCache.h>
     35 #import <WebCore/CrossOriginPreflightResultCache.h>
     36 
     37 @implementation WebCache
     38 
     39 + (void)initialize
     40 {
     41     InitWebCoreSystemInterface();
     42 }
     43 
     44 + (NSArray *)statistics
     45 {
     46     WebCore::MemoryCache::Statistics s = WebCore::memoryCache()->getStatistics();
     47 
     48     return [NSArray arrayWithObjects:
     49         [NSDictionary dictionaryWithObjectsAndKeys:
     50             [NSNumber numberWithInt:s.images.count], @"Images",
     51             [NSNumber numberWithInt:s.cssStyleSheets.count], @"CSS",
     52 #if ENABLE(XSLT)
     53             [NSNumber numberWithInt:s.xslStyleSheets.count], @"XSL",
     54 #else
     55             [NSNumber numberWithInt:0], @"XSL",
     56 #endif
     57             [NSNumber numberWithInt:s.scripts.count], @"JavaScript",
     58             nil],
     59         [NSDictionary dictionaryWithObjectsAndKeys:
     60             [NSNumber numberWithInt:s.images.size], @"Images",
     61             [NSNumber numberWithInt:s.cssStyleSheets.size] ,@"CSS",
     62 #if ENABLE(XSLT)
     63             [NSNumber numberWithInt:s.xslStyleSheets.size], @"XSL",
     64 #else
     65             [NSNumber numberWithInt:0], @"XSL",
     66 #endif
     67             [NSNumber numberWithInt:s.scripts.size], @"JavaScript",
     68             nil],
     69         [NSDictionary dictionaryWithObjectsAndKeys:
     70             [NSNumber numberWithInt:s.images.liveSize], @"Images",
     71             [NSNumber numberWithInt:s.cssStyleSheets.liveSize] ,@"CSS",
     72 #if ENABLE(XSLT)
     73             [NSNumber numberWithInt:s.xslStyleSheets.liveSize], @"XSL",
     74 #else
     75             [NSNumber numberWithInt:0], @"XSL",
     76 #endif
     77             [NSNumber numberWithInt:s.scripts.liveSize], @"JavaScript",
     78             nil],
     79         [NSDictionary dictionaryWithObjectsAndKeys:
     80             [NSNumber numberWithInt:s.images.decodedSize], @"Images",
     81             [NSNumber numberWithInt:s.cssStyleSheets.decodedSize] ,@"CSS",
     82 #if ENABLE(XSLT)
     83             [NSNumber numberWithInt:s.xslStyleSheets.decodedSize], @"XSL",
     84 #else
     85             [NSNumber numberWithInt:0], @"XSL",
     86 #endif
     87             [NSNumber numberWithInt:s.scripts.decodedSize], @"JavaScript",
     88             nil],
     89         [NSDictionary dictionaryWithObjectsAndKeys:
     90             [NSNumber numberWithInt:s.images.purgeableSize], @"Images",
     91             [NSNumber numberWithInt:s.cssStyleSheets.purgeableSize] ,@"CSS",
     92 #if ENABLE(XSLT)
     93             [NSNumber numberWithInt:s.xslStyleSheets.purgeableSize], @"XSL",
     94 #else
     95             [NSNumber numberWithInt:0], @"XSL",
     96 #endif
     97             [NSNumber numberWithInt:s.scripts.purgeableSize], @"JavaScript",
     98             nil],
     99         [NSDictionary dictionaryWithObjectsAndKeys:
    100             [NSNumber numberWithInt:s.images.purgedSize], @"Images",
    101             [NSNumber numberWithInt:s.cssStyleSheets.purgedSize] ,@"CSS",
    102 #if ENABLE(XSLT)
    103             [NSNumber numberWithInt:s.xslStyleSheets.purgedSize], @"XSL",
    104 #else
    105             [NSNumber numberWithInt:0], @"XSL",
    106 #endif
    107             [NSNumber numberWithInt:s.scripts.purgedSize], @"JavaScript",
    108             nil],
    109         nil];
    110 }
    111 
    112 + (void)empty
    113 {
    114     // Toggling the cache model like this forces the cache to evict all its in-memory resources.
    115     WebCacheModel cacheModel = [WebView _cacheModel];
    116     [WebView _setCacheModel:WebCacheModelDocumentViewer];
    117     [WebView _setCacheModel:cacheModel];
    118 
    119 #if ENABLE(OFFLINE_WEB_APPLICATIONS)
    120     // Empty the application cache.
    121     WebCore::cacheStorage().empty();
    122 #endif
    123 
    124     // Empty the Cross-Origin Preflight cache
    125     WebCore::CrossOriginPreflightResultCache::shared().empty();
    126 }
    127 
    128 + (void)setDisabled:(BOOL)disabled
    129 {
    130     if (!pthread_main_np())
    131         return [[self _webkit_invokeOnMainThread] setDisabled:disabled];
    132 
    133     WebCore::memoryCache()->setDisabled(disabled);
    134 }
    135 
    136 + (BOOL)isDisabled
    137 {
    138     return WebCore::memoryCache()->disabled();
    139 }
    140 
    141 @end
    142