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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_COMMON_HOST_SHARED_BITMAP_MANAGER_H_
#define CONTENT_COMMON_HOST_SHARED_BITMAP_MANAGER_H_
#include <map>
#include <set>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/containers/hash_tables.h"
#include "base/hash.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/shared_memory.h"
#include "base/synchronization/lock.h"
#include "cc/resources/shared_bitmap_manager.h"
#include "content/common/content_export.h"
namespace BASE_HASH_NAMESPACE {
#if defined(COMPILER_GCC)
template <>
struct hash<cc::SharedBitmapId> {
size_t operator()(const cc::SharedBitmapId& id) const {
return base::Hash(reinterpret_cast<const char*>(id.name), sizeof(id.name));
}
};
#elif defined(COMPILER_MSVC)
inline std::size_t hash_value(const cc::SharedBitmapId& id) {
return base::Hash(reinterpret_cast<const char*>(id.name), sizeof(id.name));
}
#endif // COMPILER
} // namespace BASE_HASH_NAMESPACE
namespace content {
class BitmapData;
class CONTENT_EXPORT HostSharedBitmapManager : public cc::SharedBitmapManager {
public:
HostSharedBitmapManager();
virtual ~HostSharedBitmapManager();
static HostSharedBitmapManager* current();
// cc::SharedBitmapManager implementation.
virtual scoped_ptr<cc::SharedBitmap> AllocateSharedBitmap(
const gfx::Size& size) OVERRIDE;
virtual scoped_ptr<cc::SharedBitmap> GetSharedBitmapFromId(
const gfx::Size& size,
const cc::SharedBitmapId&) OVERRIDE;
virtual scoped_ptr<cc::SharedBitmap> GetBitmapForSharedMemory(
base::SharedMemory*) OVERRIDE;
void AllocateSharedBitmapForChild(
base::ProcessHandle process_handle,
size_t buffer_size,
const cc::SharedBitmapId& id,
base::SharedMemoryHandle* shared_memory_handle);
void ChildAllocatedSharedBitmap(size_t buffer_size,
const base::SharedMemoryHandle& handle,
base::ProcessHandle process_handle,
const cc::SharedBitmapId& id);
void ChildDeletedSharedBitmap(const cc::SharedBitmapId& id);
void ProcessRemoved(base::ProcessHandle process_handle);
size_t AllocatedBitmapCount() const { return handle_map_.size(); }
private:
void FreeSharedMemoryFromMap(cc::SharedBitmap* bitmap);
base::Lock lock_;
typedef base::hash_map<cc::SharedBitmapId, scoped_refptr<BitmapData> >
BitmapMap;
BitmapMap handle_map_;
typedef base::hash_map<base::ProcessHandle,
base::hash_set<cc::SharedBitmapId> > ProcessMap;
ProcessMap process_map_;
};
} // namespace content
#endif // CONTENT_COMMON_HOST_SHARED_BITMAP_MANAGER_H_
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