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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/common/host_shared_bitmap_manager.h" | |
| 6 | |
| 7 #include <stdint.h> | |
| 8 | |
| 9 #include <utility> | |
| 10 | |
| 11 #include "base/lazy_instance.h" | |
| 12 #include "base/macros.h" | |
| 13 #include "base/memory/ptr_util.h" | |
| 14 #include "base/memory/ref_counted.h" | |
| 15 #include "base/strings/string_number_conversions.h" | |
| 16 #include "base/trace_event/process_memory_dump.h" | |
| 17 #include "build/build_config.h" | |
| 18 #include "content/common/view_messages.h" | |
| 19 #include "ui/gfx/geometry/size.h" | |
| 20 | |
| 21 namespace content { | |
| 22 | |
| 23 class BitmapData : public base::RefCountedThreadSafe<BitmapData> { | |
| 24 public: | |
| 25 explicit BitmapData(size_t buffer_size) : buffer_size(buffer_size) {} | |
| 26 std::unique_ptr<base::SharedMemory> memory; | |
| 27 std::unique_ptr<uint8_t[]> pixels; | |
| 28 size_t buffer_size; | |
| 29 | |
| 30 private: | |
| 31 friend class base::RefCountedThreadSafe<BitmapData>; | |
| 32 ~BitmapData() {} | |
| 33 DISALLOW_COPY_AND_ASSIGN(BitmapData); | |
| 34 }; | |
| 35 | |
| 36 namespace { | |
| 37 | |
| 38 class HostSharedBitmap : public cc::SharedBitmap { | |
| 39 public: | |
| 40 HostSharedBitmap(uint8_t* pixels, | |
| 41 scoped_refptr<BitmapData> bitmap_data, | |
| 42 const cc::SharedBitmapId& id, | |
| 43 HostSharedBitmapManager* manager) | |
| 44 : SharedBitmap(pixels, id), | |
| 45 bitmap_data_(bitmap_data), | |
| 46 manager_(manager) {} | |
| 47 | |
| 48 ~HostSharedBitmap() override { | |
| 49 if (manager_) | |
| 50 manager_->FreeSharedMemoryFromMap(id()); | |
| 51 } | |
| 52 | |
| 53 private: | |
| 54 scoped_refptr<BitmapData> bitmap_data_; | |
| 55 HostSharedBitmapManager* manager_; | |
| 56 }; | |
| 57 | |
| 58 } // namespace | |
| 59 | |
| 60 base::LazyInstance<HostSharedBitmapManager>::DestructorAtExit | |
| 61 g_shared_memory_manager = LAZY_INSTANCE_INITIALIZER; | |
| 62 | |
| 63 HostSharedBitmapManagerClient::HostSharedBitmapManagerClient( | |
| 64 HostSharedBitmapManager* manager) | |
| 65 : manager_(manager) { | |
| 66 } | |
| 67 | |
| 68 HostSharedBitmapManagerClient::~HostSharedBitmapManagerClient() { | |
| 69 for (const auto& id : owned_bitmaps_) | |
| 70 manager_->ChildDeletedSharedBitmap(id); | |
| 71 } | |
| 72 | |
| 73 void HostSharedBitmapManagerClient::AllocateSharedBitmapForChild( | |
| 74 base::ProcessHandle process_handle, | |
| 75 size_t buffer_size, | |
| 76 const cc::SharedBitmapId& id, | |
| 77 base::SharedMemoryHandle* shared_memory_handle) { | |
| 78 manager_->AllocateSharedBitmapForChild(process_handle, buffer_size, id, | |
| 79 shared_memory_handle); | |
| 80 if (*shared_memory_handle != base::SharedMemory::NULLHandle()) { | |
| 81 base::AutoLock lock(lock_); | |
| 82 owned_bitmaps_.insert(id); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 void HostSharedBitmapManagerClient::ChildAllocatedSharedBitmap( | |
| 87 size_t buffer_size, | |
| 88 const base::SharedMemoryHandle& handle, | |
| 89 const cc::SharedBitmapId& id) { | |
| 90 if (manager_->ChildAllocatedSharedBitmap(buffer_size, handle, id)) { | |
| 91 base::AutoLock lock(lock_); | |
| 92 owned_bitmaps_.insert(id); | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 void HostSharedBitmapManagerClient::ChildDeletedSharedBitmap( | |
| 97 const cc::SharedBitmapId& id) { | |
| 98 manager_->ChildDeletedSharedBitmap(id); | |
| 99 { | |
| 100 base::AutoLock lock(lock_); | |
| 101 owned_bitmaps_.erase(id); | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 HostSharedBitmapManager::HostSharedBitmapManager() {} | |
| 106 HostSharedBitmapManager::~HostSharedBitmapManager() { | |
| 107 DCHECK(handle_map_.empty()); | |
| 108 } | |
| 109 | |
| 110 HostSharedBitmapManager* HostSharedBitmapManager::current() { | |
| 111 return g_shared_memory_manager.Pointer(); | |
| 112 } | |
| 113 | |
| 114 std::unique_ptr<cc::SharedBitmap> HostSharedBitmapManager::AllocateSharedBitmap( | |
| 115 const gfx::Size& size) { | |
| 116 base::AutoLock lock(lock_); | |
| 117 size_t bitmap_size; | |
| 118 if (!cc::SharedBitmap::SizeInBytes(size, &bitmap_size)) | |
| 119 return std::unique_ptr<cc::SharedBitmap>(); | |
| 120 | |
| 121 scoped_refptr<BitmapData> data(new BitmapData(bitmap_size)); | |
| 122 // Bitmaps allocated in host don't need to be shared to other processes, so | |
| 123 // allocate them with new instead. | |
| 124 data->pixels = std::unique_ptr<uint8_t[]>(new uint8_t[bitmap_size]); | |
| 125 | |
| 126 cc::SharedBitmapId id = cc::SharedBitmap::GenerateId(); | |
| 127 handle_map_[id] = data; | |
| 128 return base::MakeUnique<HostSharedBitmap>(data->pixels.get(), data, id, this); | |
| 129 } | |
| 130 | |
| 131 std::unique_ptr<cc::SharedBitmap> | |
| 132 HostSharedBitmapManager::GetSharedBitmapFromId(const gfx::Size& size, | |
| 133 const cc::SharedBitmapId& id) { | |
| 134 base::AutoLock lock(lock_); | |
| 135 BitmapMap::iterator it = handle_map_.find(id); | |
| 136 if (it == handle_map_.end()) | |
| 137 return std::unique_ptr<cc::SharedBitmap>(); | |
| 138 | |
| 139 BitmapData* data = it->second.get(); | |
| 140 | |
| 141 size_t bitmap_size; | |
| 142 if (!cc::SharedBitmap::SizeInBytes(size, &bitmap_size) || | |
| 143 bitmap_size > data->buffer_size) | |
| 144 return std::unique_ptr<cc::SharedBitmap>(); | |
| 145 | |
| 146 if (data->pixels) { | |
| 147 return base::MakeUnique<HostSharedBitmap>(data->pixels.get(), data, id, | |
| 148 nullptr); | |
| 149 } | |
| 150 if (!data->memory->memory()) { | |
| 151 return std::unique_ptr<cc::SharedBitmap>(); | |
| 152 } | |
| 153 | |
| 154 return base::MakeUnique<HostSharedBitmap>( | |
| 155 static_cast<uint8_t*>(data->memory->memory()), data, id, nullptr); | |
| 156 } | |
| 157 | |
| 158 bool HostSharedBitmapManager::OnMemoryDump( | |
| 159 const base::trace_event::MemoryDumpArgs& args, | |
| 160 base::trace_event::ProcessMemoryDump* pmd) { | |
| 161 base::AutoLock lock(lock_); | |
| 162 | |
| 163 for (const auto& bitmap : handle_map_) { | |
| 164 base::trace_event::MemoryAllocatorDump* dump = | |
| 165 pmd->CreateAllocatorDump(base::StringPrintf( | |
| 166 "sharedbitmap/%s", | |
| 167 base::HexEncode(bitmap.first.name, sizeof(bitmap.first.name)) | |
| 168 .c_str())); | |
| 169 if (!dump) | |
| 170 return false; | |
| 171 | |
| 172 dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize, | |
| 173 base::trace_event::MemoryAllocatorDump::kUnitsBytes, | |
| 174 bitmap.second->buffer_size); | |
| 175 | |
| 176 // Generate a global GUID used to share this allocation with renderer | |
| 177 // processes. | |
| 178 auto guid = cc::GetSharedBitmapGUIDForTracing(bitmap.first); | |
| 179 pmd->CreateSharedGlobalAllocatorDump(guid); | |
| 180 pmd->AddOwnershipEdge(dump->guid(), guid); | |
| 181 } | |
| 182 | |
| 183 return true; | |
| 184 } | |
| 185 | |
| 186 bool HostSharedBitmapManager::ChildAllocatedSharedBitmap( | |
| 187 size_t buffer_size, | |
| 188 const base::SharedMemoryHandle& handle, | |
| 189 const cc::SharedBitmapId& id) { | |
| 190 base::AutoLock lock(lock_); | |
| 191 if (handle_map_.find(id) != handle_map_.end()) | |
| 192 return false; | |
| 193 scoped_refptr<BitmapData> data(new BitmapData(buffer_size)); | |
| 194 | |
| 195 handle_map_[id] = data; | |
| 196 data->memory = base::MakeUnique<base::SharedMemory>(handle, false); | |
| 197 data->memory->Map(data->buffer_size); | |
| 198 data->memory->Close(); | |
| 199 return true; | |
| 200 } | |
| 201 | |
| 202 void HostSharedBitmapManager::AllocateSharedBitmapForChild( | |
| 203 base::ProcessHandle process_handle, | |
| 204 size_t buffer_size, | |
| 205 const cc::SharedBitmapId& id, | |
| 206 base::SharedMemoryHandle* shared_memory_handle) { | |
| 207 base::AutoLock lock(lock_); | |
| 208 if (handle_map_.find(id) != handle_map_.end()) { | |
| 209 *shared_memory_handle = base::SharedMemory::NULLHandle(); | |
| 210 return; | |
| 211 } | |
| 212 std::unique_ptr<base::SharedMemory> shared_memory(new base::SharedMemory); | |
| 213 if (!shared_memory->CreateAndMapAnonymous(buffer_size)) { | |
| 214 LOG(ERROR) << "Cannot create shared memory buffer"; | |
| 215 *shared_memory_handle = base::SharedMemory::NULLHandle(); | |
| 216 return; | |
| 217 } | |
| 218 | |
| 219 scoped_refptr<BitmapData> data(new BitmapData(buffer_size)); | |
| 220 data->memory = std::move(shared_memory); | |
| 221 | |
| 222 handle_map_[id] = data; | |
| 223 if (!data->memory->ShareToProcess(process_handle, shared_memory_handle)) { | |
| 224 LOG(ERROR) << "Cannot share shared memory buffer"; | |
| 225 *shared_memory_handle = base::SharedMemory::NULLHandle(); | |
| 226 return; | |
| 227 } | |
| 228 data->memory->Close(); | |
| 229 } | |
| 230 | |
| 231 void HostSharedBitmapManager::ChildDeletedSharedBitmap( | |
| 232 const cc::SharedBitmapId& id) { | |
| 233 base::AutoLock lock(lock_); | |
| 234 handle_map_.erase(id); | |
| 235 } | |
| 236 | |
| 237 size_t HostSharedBitmapManager::AllocatedBitmapCount() const { | |
| 238 base::AutoLock lock(lock_); | |
| 239 return handle_map_.size(); | |
| 240 } | |
| 241 | |
| 242 void HostSharedBitmapManager::FreeSharedMemoryFromMap( | |
| 243 const cc::SharedBitmapId& id) { | |
| 244 base::AutoLock lock(lock_); | |
| 245 handle_map_.erase(id); | |
| 246 } | |
| 247 | |
| 248 } // namespace content | |
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Chromium Code Reviews
Issue 2717213004:
Move SharedBitmapManager implementation out of content/ (Closed)
