memory_cache.h | Explore in Territory

/*
    Copyright (C) 1998 Lars Knoll ([email protected])
    Copyright (C) 2001 Dirk Mueller <[email protected]>
    Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.

    This class provides all functionality needed for loading images, style
   sheets and html
    pages from the web. It has a memory cache for these objects.
*/

#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_MEMORY_CACHE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_MEMORY_CACHE_H_

#include "base/gtest_prod_util.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_map.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_linked_hash_set.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/forward.h"
#include "third_party/blink/renderer/platform/instrumentation/memory_pressure_listener.h"
#include "third_party/blink/renderer/platform/instrumentation/tracing/memory_cache_dump_provider.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/text/string_hash.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"

namespace blink {

class KURL;

// Member<MemoryCacheEntry> + MemoryCacheEntry::clearResourceWeak() monitors
// eviction from MemoryCache due to Resource garbage collection.
// WeakMember<Resource> + Resource's prefinalizer cannot determine whether the
// Resource was on MemoryCache or not, because WeakMember is already cleared
// when the prefinalizer is executed.
class MemoryCacheEntry final : public GarbageCollected<MemoryCacheEntry> { … };

// This cache holds subresources used by Web pages: images, scripts,
// stylesheets, etc.
class PLATFORM_EXPORT MemoryCache final : public GarbageCollected<MemoryCache>,
                                          public MemoryCacheDumpClient,
                                          public MemoryPressureListener { … };

// Sets the global cache, used to swap in a test instance. Returns the old
// MemoryCache object.
PLATFORM_EXPORT MemoryCache* ReplaceMemoryCacheForTesting(MemoryCache*);

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_MEMORY_CACHE_H_
chromium/third_party/blink/renderer/platform/loader/fetch/memory_cache.h
