
This CL was created using Scythe (Googlers only tool, sorry...). See go/scythe for more details. BUG=600434 CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_site_isolation Review URL: https://codereview.chromium.org/1875463002 Cr-Commit-Position: refs/heads/master@{#387990}
250 lines
7.6 KiB
C++
250 lines
7.6 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "content/common/host_shared_bitmap_manager.h"
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#include <stdint.h>
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#include <utility>
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#include "base/lazy_instance.h"
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#include "base/macros.h"
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#include "base/memory/ptr_util.h"
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#include "base/memory/ref_counted.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/trace_event/process_memory_dump.h"
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#include "build/build_config.h"
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#include "content/common/view_messages.h"
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#include "ui/gfx/geometry/size.h"
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namespace content {
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class BitmapData : public base::RefCountedThreadSafe<BitmapData> {
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public:
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explicit BitmapData(size_t buffer_size) : buffer_size(buffer_size) {}
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std::unique_ptr<base::SharedMemory> memory;
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std::unique_ptr<uint8_t[]> pixels;
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size_t buffer_size;
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private:
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friend class base::RefCountedThreadSafe<BitmapData>;
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~BitmapData() {}
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DISALLOW_COPY_AND_ASSIGN(BitmapData);
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};
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namespace {
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class HostSharedBitmap : public cc::SharedBitmap {
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public:
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HostSharedBitmap(uint8_t* pixels,
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scoped_refptr<BitmapData> bitmap_data,
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const cc::SharedBitmapId& id,
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HostSharedBitmapManager* manager)
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: SharedBitmap(pixels, id),
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bitmap_data_(bitmap_data),
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manager_(manager) {}
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~HostSharedBitmap() override {
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if (manager_)
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manager_->FreeSharedMemoryFromMap(id());
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}
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private:
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scoped_refptr<BitmapData> bitmap_data_;
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HostSharedBitmapManager* manager_;
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};
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} // namespace
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base::LazyInstance<HostSharedBitmapManager> g_shared_memory_manager =
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LAZY_INSTANCE_INITIALIZER;
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HostSharedBitmapManagerClient::HostSharedBitmapManagerClient(
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HostSharedBitmapManager* manager)
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: manager_(manager) {
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}
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HostSharedBitmapManagerClient::~HostSharedBitmapManagerClient() {
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for (const auto& id : owned_bitmaps_)
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manager_->ChildDeletedSharedBitmap(id);
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}
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void HostSharedBitmapManagerClient::AllocateSharedBitmapForChild(
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base::ProcessHandle process_handle,
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size_t buffer_size,
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const cc::SharedBitmapId& id,
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base::SharedMemoryHandle* shared_memory_handle) {
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manager_->AllocateSharedBitmapForChild(process_handle, buffer_size, id,
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shared_memory_handle);
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if (*shared_memory_handle != base::SharedMemory::NULLHandle()) {
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base::AutoLock lock(lock_);
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owned_bitmaps_.insert(id);
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}
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}
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void HostSharedBitmapManagerClient::ChildAllocatedSharedBitmap(
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size_t buffer_size,
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const base::SharedMemoryHandle& handle,
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const cc::SharedBitmapId& id) {
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if (manager_->ChildAllocatedSharedBitmap(buffer_size, handle, id)) {
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base::AutoLock lock(lock_);
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owned_bitmaps_.insert(id);
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}
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}
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void HostSharedBitmapManagerClient::ChildDeletedSharedBitmap(
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const cc::SharedBitmapId& id) {
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manager_->ChildDeletedSharedBitmap(id);
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{
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base::AutoLock lock(lock_);
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owned_bitmaps_.erase(id);
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}
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}
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HostSharedBitmapManager::HostSharedBitmapManager() {}
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HostSharedBitmapManager::~HostSharedBitmapManager() {
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DCHECK(handle_map_.empty());
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}
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HostSharedBitmapManager* HostSharedBitmapManager::current() {
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return g_shared_memory_manager.Pointer();
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}
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std::unique_ptr<cc::SharedBitmap> HostSharedBitmapManager::AllocateSharedBitmap(
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const gfx::Size& size) {
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base::AutoLock lock(lock_);
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size_t bitmap_size;
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if (!cc::SharedBitmap::SizeInBytes(size, &bitmap_size))
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return std::unique_ptr<cc::SharedBitmap>();
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scoped_refptr<BitmapData> data(new BitmapData(bitmap_size));
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// Bitmaps allocated in host don't need to be shared to other processes, so
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// allocate them with new instead.
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data->pixels = std::unique_ptr<uint8_t[]>(new uint8_t[bitmap_size]);
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cc::SharedBitmapId id = cc::SharedBitmap::GenerateId();
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handle_map_[id] = data;
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return base::WrapUnique(
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new HostSharedBitmap(data->pixels.get(), data, id, this));
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}
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std::unique_ptr<cc::SharedBitmap>
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HostSharedBitmapManager::GetSharedBitmapFromId(const gfx::Size& size,
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const cc::SharedBitmapId& id) {
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base::AutoLock lock(lock_);
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BitmapMap::iterator it = handle_map_.find(id);
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if (it == handle_map_.end())
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return std::unique_ptr<cc::SharedBitmap>();
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BitmapData* data = it->second.get();
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size_t bitmap_size;
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if (!cc::SharedBitmap::SizeInBytes(size, &bitmap_size) ||
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bitmap_size > data->buffer_size)
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return std::unique_ptr<cc::SharedBitmap>();
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if (data->pixels) {
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return base::WrapUnique(
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new HostSharedBitmap(data->pixels.get(), data, id, nullptr));
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}
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if (!data->memory->memory()) {
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return std::unique_ptr<cc::SharedBitmap>();
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}
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return base::WrapUnique(new HostSharedBitmap(
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static_cast<uint8_t*>(data->memory->memory()), data, id, nullptr));
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}
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bool HostSharedBitmapManager::OnMemoryDump(
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const base::trace_event::MemoryDumpArgs& args,
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base::trace_event::ProcessMemoryDump* pmd) {
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base::AutoLock lock(lock_);
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for (const auto& bitmap : handle_map_) {
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base::trace_event::MemoryAllocatorDump* dump =
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pmd->CreateAllocatorDump(base::StringPrintf(
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"sharedbitmap/%s",
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base::HexEncode(bitmap.first.name, sizeof(bitmap.first.name))
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.c_str()));
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if (!dump)
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return false;
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dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
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base::trace_event::MemoryAllocatorDump::kUnitsBytes,
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bitmap.second->buffer_size);
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// Generate a global GUID used to share this allocation with renderer
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// processes.
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auto guid = cc::GetSharedBitmapGUIDForTracing(bitmap.first);
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pmd->CreateSharedGlobalAllocatorDump(guid);
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pmd->AddOwnershipEdge(dump->guid(), guid);
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}
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return true;
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}
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bool HostSharedBitmapManager::ChildAllocatedSharedBitmap(
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size_t buffer_size,
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const base::SharedMemoryHandle& handle,
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const cc::SharedBitmapId& id) {
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base::AutoLock lock(lock_);
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if (handle_map_.find(id) != handle_map_.end())
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return false;
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scoped_refptr<BitmapData> data(new BitmapData(buffer_size));
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handle_map_[id] = data;
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data->memory = base::WrapUnique(new base::SharedMemory(handle, false));
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data->memory->Map(data->buffer_size);
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data->memory->Close();
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return true;
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}
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void HostSharedBitmapManager::AllocateSharedBitmapForChild(
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base::ProcessHandle process_handle,
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size_t buffer_size,
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const cc::SharedBitmapId& id,
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base::SharedMemoryHandle* shared_memory_handle) {
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base::AutoLock lock(lock_);
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if (handle_map_.find(id) != handle_map_.end()) {
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*shared_memory_handle = base::SharedMemory::NULLHandle();
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return;
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}
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std::unique_ptr<base::SharedMemory> shared_memory(new base::SharedMemory);
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if (!shared_memory->CreateAndMapAnonymous(buffer_size)) {
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LOG(ERROR) << "Cannot create shared memory buffer";
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*shared_memory_handle = base::SharedMemory::NULLHandle();
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return;
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}
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scoped_refptr<BitmapData> data(new BitmapData(buffer_size));
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data->memory = std::move(shared_memory);
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handle_map_[id] = data;
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if (!data->memory->ShareToProcess(process_handle, shared_memory_handle)) {
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LOG(ERROR) << "Cannot share shared memory buffer";
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*shared_memory_handle = base::SharedMemory::NULLHandle();
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return;
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}
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data->memory->Close();
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}
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void HostSharedBitmapManager::ChildDeletedSharedBitmap(
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const cc::SharedBitmapId& id) {
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base::AutoLock lock(lock_);
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handle_map_.erase(id);
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}
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size_t HostSharedBitmapManager::AllocatedBitmapCount() const {
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base::AutoLock lock(lock_);
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return handle_map_.size();
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}
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void HostSharedBitmapManager::FreeSharedMemoryFromMap(
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const cc::SharedBitmapId& id) {
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base::AutoLock lock(lock_);
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handle_map_.erase(id);
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}
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} // namespace content
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