chromium/components/viz/service/display_embedder/server_shared_bitmap_manager.cc

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/viz/service/display_embedder/server_shared_bitmap_manager.h"

#include <stdint.h>

#include <string>
#include <utility>

#include "base/containers/contains.h"
#include "base/lazy_instance.h"
#include "base/memory/read_only_shared_memory_region.h"
#include "base/memory/ref_counted.h"
#include "base/memory/shared_memory_mapping.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/process_memory_dump.h"
#include "components/viz/common/resources/bitmap_allocation.h"
#include "components/viz/common/resources/resource_sizes.h"
#include "mojo/public/cpp/system/platform_handle.h"
#include "ui/gfx/geometry/size.h"

namespace viz {

class BitmapData : public base::RefCounted<BitmapData> { … };

// Holds a bitmap stored in local memory.
class LocalBitmapData : public BitmapData { … };

// Holds a bitmap stored in shared memory.
class SharedMemoryBitmapData : public BitmapData { … };

namespace {

// Holds a reference on the BitmapData so that the WritableSharedMemoryMapping
// can outlive the SharedBitmapId registration as long as this SharedBitmap
// object is held alive.
class ServerSharedBitmap : public SharedBitmap { … };

}  // namespace

ServerSharedBitmapManager::ServerSharedBitmapManager() = default;

ServerSharedBitmapManager::~ServerSharedBitmapManager() { … }

std::unique_ptr<SharedBitmap> ServerSharedBitmapManager::GetSharedBitmapFromId(
    const gfx::Size& size,
    SharedImageFormat format,
    const SharedBitmapId& id) { … }

base::UnguessableToken
ServerSharedBitmapManager::GetSharedBitmapTracingGUIDFromId(
    const SharedBitmapId& id) { … }

bool ServerSharedBitmapManager::LocalAllocatedSharedBitmap(
    SkBitmap bitmap,
    const SharedBitmapId& id) { … }

bool ServerSharedBitmapManager::ChildAllocatedSharedBitmap(
    base::ReadOnlySharedMemoryMapping mapping,
    const SharedBitmapId& id) { … }

void ServerSharedBitmapManager::ChildDeletedSharedBitmap(
    const SharedBitmapId& id) { … }

bool ServerSharedBitmapManager::OnMemoryDump(
    const base::trace_event::MemoryDumpArgs& args,
    base::trace_event::ProcessMemoryDump* pmd) { … }

}  // namespace viz