Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 1 | #include <sys/epoll.h> |
| 2 | #include <sys/eventfd.h> |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 3 | #include <sys/poll.h> |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 4 | |
| 5 | #include <algorithm> |
| 6 | #include <atomic> |
| 7 | #include <thread> |
| 8 | |
Fan Xu | 74df490 | 2018-09-20 16:40:51 -0700 | [diff] [blame] | 9 | #include <log/log.h> |
Fan Xu | 74df490 | 2018-09-20 16:40:51 -0700 | [diff] [blame] | 10 | #include <private/dvr/buffer_channel.h> |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 11 | #include <private/dvr/bufferhub_rpc.h> |
Fan Xu | 74df490 | 2018-09-20 16:40:51 -0700 | [diff] [blame] | 12 | #include <private/dvr/consumer_channel.h> |
| 13 | #include <private/dvr/producer_channel.h> |
| 14 | #include <sync/sync.h> |
| 15 | #include <utils/Trace.h> |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 16 | |
| 17 | using android::pdx::BorrowedHandle; |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 18 | using android::pdx::ErrorStatus; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 19 | using android::pdx::Message; |
| 20 | using android::pdx::RemoteChannelHandle; |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 21 | using android::pdx::Status; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 22 | using android::pdx::rpc::BufferWrapper; |
| 23 | using android::pdx::rpc::DispatchRemoteMethod; |
| 24 | using android::pdx::rpc::WrapBuffer; |
| 25 | |
| 26 | namespace android { |
| 27 | namespace dvr { |
| 28 | |
Jiwen 'Steve' Cai | 0728fa9 | 2018-04-24 19:03:14 -0700 | [diff] [blame] | 29 | ProducerChannel::ProducerChannel(BufferHubService* service, int buffer_id, |
| 30 | int channel_id, IonBuffer buffer, |
| 31 | IonBuffer metadata_buffer, |
| 32 | size_t user_metadata_size, int* error) |
| 33 | : BufferHubChannel(service, buffer_id, channel_id, kProducerType), |
| 34 | buffer_(std::move(buffer)), |
| 35 | metadata_buffer_(std::move(metadata_buffer)), |
| 36 | user_metadata_size_(user_metadata_size), |
| 37 | metadata_buf_size_(BufferHubDefs::kMetadataHeaderSize + |
| 38 | user_metadata_size) { |
| 39 | if (!buffer_.IsValid()) { |
| 40 | ALOGE("ProducerChannel::ProducerChannel: Invalid buffer."); |
| 41 | *error = -EINVAL; |
| 42 | return; |
| 43 | } |
| 44 | if (!metadata_buffer_.IsValid()) { |
| 45 | ALOGE("ProducerChannel::ProducerChannel: Invalid metadata buffer."); |
| 46 | *error = -EINVAL; |
| 47 | return; |
| 48 | } |
| 49 | |
| 50 | *error = InitializeBuffer(); |
| 51 | } |
| 52 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 53 | ProducerChannel::ProducerChannel(BufferHubService* service, int channel_id, |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 54 | uint32_t width, uint32_t height, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 55 | uint32_t layer_count, uint32_t format, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 56 | uint64_t usage, size_t user_metadata_size, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 57 | int* error) |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 58 | : BufferHubChannel(service, channel_id, channel_id, kProducerType), |
| 59 | pending_consumers_(0), |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 60 | producer_owns_(true), |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 61 | user_metadata_size_(user_metadata_size), |
| 62 | metadata_buf_size_(BufferHubDefs::kMetadataHeaderSize + |
| 63 | user_metadata_size) { |
| 64 | if (int ret = buffer_.Alloc(width, height, layer_count, format, usage)) { |
Hendrik Wagenaar | 4d3590f | 2017-05-06 22:36:04 -0700 | [diff] [blame] | 65 | ALOGE("ProducerChannel::ProducerChannel: Failed to allocate buffer: %s", |
| 66 | strerror(-ret)); |
| 67 | *error = ret; |
| 68 | return; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 69 | } |
| 70 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 71 | if (int ret = metadata_buffer_.Alloc(metadata_buf_size_, /*height=*/1, |
| 72 | /*layer_count=*/1, |
| 73 | BufferHubDefs::kMetadataFormat, |
| 74 | BufferHubDefs::kMetadataUsage)) { |
| 75 | ALOGE("ProducerChannel::ProducerChannel: Failed to allocate metadata: %s", |
| 76 | strerror(-ret)); |
| 77 | *error = ret; |
| 78 | return; |
| 79 | } |
| 80 | |
Jiwen 'Steve' Cai | 0728fa9 | 2018-04-24 19:03:14 -0700 | [diff] [blame] | 81 | *error = InitializeBuffer(); |
| 82 | } |
| 83 | |
| 84 | int ProducerChannel::InitializeBuffer() { |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 85 | void* metadata_ptr = nullptr; |
| 86 | if (int ret = metadata_buffer_.Lock(BufferHubDefs::kMetadataUsage, /*x=*/0, |
| 87 | /*y=*/0, metadata_buf_size_, |
| 88 | /*height=*/1, &metadata_ptr)) { |
| 89 | ALOGE("ProducerChannel::ProducerChannel: Failed to lock metadata."); |
Jiwen 'Steve' Cai | 0728fa9 | 2018-04-24 19:03:14 -0700 | [diff] [blame] | 90 | return ret; |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 91 | } |
| 92 | metadata_header_ = |
| 93 | reinterpret_cast<BufferHubDefs::MetadataHeader*>(metadata_ptr); |
| 94 | |
| 95 | // Using placement new here to reuse shared memory instead of new allocation |
| 96 | // and also initialize the value to zero. |
| 97 | buffer_state_ = |
| 98 | new (&metadata_header_->buffer_state) std::atomic<uint64_t>(0); |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 99 | fence_state_ = new (&metadata_header_->fence_state) std::atomic<uint64_t>(0); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 100 | |
| 101 | acquire_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC)); |
| 102 | release_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC)); |
| 103 | if (!acquire_fence_fd_ || !release_fence_fd_) { |
| 104 | ALOGE("ProducerChannel::ProducerChannel: Failed to create shared fences."); |
Jiwen 'Steve' Cai | 0728fa9 | 2018-04-24 19:03:14 -0700 | [diff] [blame] | 105 | return -EIO; |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | dummy_fence_fd_.Reset(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK)); |
| 109 | if (!dummy_fence_fd_) { |
| 110 | ALOGE("ProducerChannel::ProducerChannel: Failed to create dummy fences."); |
Jiwen 'Steve' Cai | 0728fa9 | 2018-04-24 19:03:14 -0700 | [diff] [blame] | 111 | return EIO; |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | epoll_event event; |
| 115 | event.events = 0; |
| 116 | event.data.u64 = 0ULL; |
| 117 | if (epoll_ctl(release_fence_fd_.Get(), EPOLL_CTL_ADD, dummy_fence_fd_.Get(), |
| 118 | &event) < 0) { |
| 119 | ALOGE( |
| 120 | "ProducerChannel::ProducerChannel: Failed to modify the shared " |
| 121 | "release fence to include the dummy fence: %s", |
| 122 | strerror(errno)); |
Jiwen 'Steve' Cai | 0728fa9 | 2018-04-24 19:03:14 -0700 | [diff] [blame] | 123 | return -EIO; |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 124 | } |
| 125 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 126 | // Success. |
Jiwen 'Steve' Cai | 0728fa9 | 2018-04-24 19:03:14 -0700 | [diff] [blame] | 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | std::unique_ptr<ProducerChannel> ProducerChannel::Create( |
| 131 | BufferHubService* service, int buffer_id, int channel_id, IonBuffer buffer, |
| 132 | IonBuffer metadata_buffer, size_t user_metadata_size) { |
| 133 | int error = 0; |
| 134 | std::unique_ptr<ProducerChannel> producer(new ProducerChannel( |
| 135 | service, buffer_id, channel_id, std::move(buffer), |
| 136 | std::move(metadata_buffer), user_metadata_size, &error)); |
| 137 | |
| 138 | if (error < 0) |
| 139 | return nullptr; |
| 140 | else |
| 141 | return producer; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 142 | } |
| 143 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 144 | Status<std::shared_ptr<ProducerChannel>> ProducerChannel::Create( |
| 145 | BufferHubService* service, int channel_id, uint32_t width, uint32_t height, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 146 | uint32_t layer_count, uint32_t format, uint64_t usage, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 147 | size_t user_metadata_size) { |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 148 | int error; |
Jiwen 'Steve' Cai | 0057fdd | 2017-05-02 11:21:18 -0700 | [diff] [blame] | 149 | std::shared_ptr<ProducerChannel> producer( |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 150 | new ProducerChannel(service, channel_id, width, height, layer_count, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 151 | format, usage, user_metadata_size, &error)); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 152 | if (error < 0) |
| 153 | return ErrorStatus(-error); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 154 | else |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 155 | return {std::move(producer)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | ProducerChannel::~ProducerChannel() { |
Corey Tabaka | 3079cb7 | 2017-01-19 15:07:26 -0800 | [diff] [blame] | 159 | ALOGD_IF(TRACE, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 160 | "ProducerChannel::~ProducerChannel: channel_id=%d buffer_id=%d " |
| 161 | "state=%" PRIx64 ".", |
| 162 | channel_id(), buffer_id(), buffer_state_->load()); |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 163 | for (auto consumer : consumer_channels_) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 164 | consumer->OnProducerClosed(); |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 165 | } |
| 166 | Hangup(); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | BufferHubChannel::BufferInfo ProducerChannel::GetBufferInfo() const { |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 170 | // Derive the mask of signaled buffers in this producer / consumer set. |
| 171 | uint64_t signaled_mask = signaled() ? BufferHubDefs::kProducerStateBit : 0; |
| 172 | for (const ConsumerChannel* consumer : consumer_channels_) { |
| 173 | signaled_mask |= consumer->signaled() ? consumer->consumer_state_bit() : 0; |
| 174 | } |
| 175 | |
Hendrik Wagenaar | 4d3590f | 2017-05-06 22:36:04 -0700 | [diff] [blame] | 176 | return BufferInfo(buffer_id(), consumer_channels_.size(), buffer_.width(), |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 177 | buffer_.height(), buffer_.layer_count(), buffer_.format(), |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 178 | buffer_.usage(), pending_consumers_, buffer_state_->load(), |
Jiwen 'Steve' Cai | 2f26033 | 2018-02-15 18:39:47 -0800 | [diff] [blame] | 179 | signaled_mask, metadata_header_->queue_index); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | void ProducerChannel::HandleImpulse(Message& message) { |
| 183 | ATRACE_NAME("ProducerChannel::HandleImpulse"); |
| 184 | switch (message.GetOp()) { |
| 185 | case BufferHubRPC::ProducerGain::Opcode: |
| 186 | OnProducerGain(message); |
| 187 | break; |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 188 | case BufferHubRPC::ProducerPost::Opcode: |
| 189 | OnProducerPost(message, {}); |
| 190 | break; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 191 | } |
| 192 | } |
| 193 | |
| 194 | bool ProducerChannel::HandleMessage(Message& message) { |
| 195 | ATRACE_NAME("ProducerChannel::HandleMessage"); |
| 196 | switch (message.GetOp()) { |
| 197 | case BufferHubRPC::GetBuffer::Opcode: |
| 198 | DispatchRemoteMethod<BufferHubRPC::GetBuffer>( |
| 199 | *this, &ProducerChannel::OnGetBuffer, message); |
| 200 | return true; |
| 201 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 202 | case BufferHubRPC::NewConsumer::Opcode: |
| 203 | DispatchRemoteMethod<BufferHubRPC::NewConsumer>( |
| 204 | *this, &ProducerChannel::OnNewConsumer, message); |
| 205 | return true; |
| 206 | |
| 207 | case BufferHubRPC::ProducerPost::Opcode: |
| 208 | DispatchRemoteMethod<BufferHubRPC::ProducerPost>( |
| 209 | *this, &ProducerChannel::OnProducerPost, message); |
| 210 | return true; |
| 211 | |
| 212 | case BufferHubRPC::ProducerGain::Opcode: |
| 213 | DispatchRemoteMethod<BufferHubRPC::ProducerGain>( |
| 214 | *this, &ProducerChannel::OnProducerGain, message); |
| 215 | return true; |
| 216 | |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 217 | case BufferHubRPC::ProducerBufferDetach::Opcode: |
| 218 | DispatchRemoteMethod<BufferHubRPC::ProducerBufferDetach>( |
| 219 | *this, &ProducerChannel::OnProducerDetach, message); |
| 220 | return true; |
| 221 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 222 | default: |
| 223 | return false; |
| 224 | } |
| 225 | } |
| 226 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 227 | BufferDescription<BorrowedHandle> ProducerChannel::GetBuffer( |
| 228 | uint64_t buffer_state_bit) { |
Jiwen 'Steve' Cai | 57ae3ee | 2018-05-03 17:51:52 -0700 | [diff] [blame] | 229 | return {buffer_, |
| 230 | metadata_buffer_, |
| 231 | buffer_id(), |
| 232 | channel_id(), |
| 233 | buffer_state_bit, |
| 234 | acquire_fence_fd_.Borrow(), |
| 235 | release_fence_fd_.Borrow()}; |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | Status<BufferDescription<BorrowedHandle>> ProducerChannel::OnGetBuffer( |
Corey Tabaka | d53870c | 2017-07-06 18:04:27 -0700 | [diff] [blame] | 239 | Message& /*message*/) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 240 | ATRACE_NAME("ProducerChannel::OnGetBuffer"); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 241 | ALOGD_IF(TRACE, "ProducerChannel::OnGetBuffer: buffer=%d, state=%" PRIx64 ".", |
| 242 | buffer_id(), buffer_state_->load()); |
| 243 | return {GetBuffer(BufferHubDefs::kProducerStateBit)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 244 | } |
| 245 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 246 | Status<RemoteChannelHandle> ProducerChannel::CreateConsumer(Message& message) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 247 | ATRACE_NAME("ProducerChannel::CreateConsumer"); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 248 | ALOGD_IF(TRACE, |
| 249 | "ProducerChannel::CreateConsumer: buffer_id=%d, producer_owns=%d", |
| 250 | buffer_id(), producer_owns_); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 251 | |
| 252 | int channel_id; |
| 253 | auto status = message.PushChannel(0, nullptr, &channel_id); |
| 254 | if (!status) { |
| 255 | ALOGE( |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 256 | "ProducerChannel::CreateConsumer: Failed to push consumer channel: %s", |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 257 | status.GetErrorMessage().c_str()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 258 | return ErrorStatus(ENOMEM); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 259 | } |
| 260 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 261 | // Try find the next consumer state bit which has not been claimed by any |
| 262 | // consumer yet. |
Jiwen 'Steve' Cai | 2e06c1c | 2018-07-30 21:35:32 -0700 | [diff] [blame] | 263 | uint64_t consumer_state_bit = BufferHubDefs::FindNextClearedBit( |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 264 | active_consumer_bit_mask_ | orphaned_consumer_bit_mask_ | |
| 265 | BufferHubDefs::kProducerStateBit); |
| 266 | if (consumer_state_bit == 0ULL) { |
| 267 | ALOGE( |
| 268 | "ProducerChannel::CreateConsumer: reached the maximum mumber of " |
| 269 | "consumers per producer: 63."); |
| 270 | return ErrorStatus(E2BIG); |
| 271 | } |
| 272 | |
| 273 | auto consumer = |
| 274 | std::make_shared<ConsumerChannel>(service(), buffer_id(), channel_id, |
| 275 | consumer_state_bit, shared_from_this()); |
Alex Vakulenko | f0a7bd0 | 2017-03-31 18:06:19 -0700 | [diff] [blame] | 276 | const auto channel_status = service()->SetChannel(channel_id, consumer); |
| 277 | if (!channel_status) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 278 | ALOGE( |
| 279 | "ProducerChannel::CreateConsumer: failed to set new consumer channel: " |
| 280 | "%s", |
Alex Vakulenko | f0a7bd0 | 2017-03-31 18:06:19 -0700 | [diff] [blame] | 281 | channel_status.GetErrorMessage().c_str()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 282 | return ErrorStatus(ENOMEM); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 283 | } |
| 284 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 285 | if (!producer_owns_ && |
| 286 | !BufferHubDefs::IsBufferReleased(buffer_state_->load())) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 287 | // Signal the new consumer when adding it to a posted producer. |
| 288 | if (consumer->OnProducerPosted()) |
| 289 | pending_consumers_++; |
| 290 | } |
| 291 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 292 | active_consumer_bit_mask_ |= consumer_state_bit; |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 293 | return {status.take()}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 294 | } |
| 295 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 296 | Status<RemoteChannelHandle> ProducerChannel::OnNewConsumer(Message& message) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 297 | ATRACE_NAME("ProducerChannel::OnNewConsumer"); |
| 298 | ALOGD_IF(TRACE, "ProducerChannel::OnNewConsumer: buffer_id=%d", buffer_id()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 299 | return CreateConsumer(message); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 300 | } |
| 301 | |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 302 | Status<void> ProducerChannel::OnProducerPost(Message&, |
| 303 | LocalFence acquire_fence) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 304 | ATRACE_NAME("ProducerChannel::OnProducerPost"); |
| 305 | ALOGD_IF(TRACE, "ProducerChannel::OnProducerPost: buffer_id=%d", buffer_id()); |
| 306 | if (!producer_owns_) { |
| 307 | ALOGE("ProducerChannel::OnProducerPost: Not in gained state!"); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 308 | return ErrorStatus(EBUSY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 309 | } |
| 310 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 311 | epoll_event event; |
| 312 | event.events = 0; |
| 313 | event.data.u64 = 0ULL; |
| 314 | int ret = epoll_ctl(release_fence_fd_.Get(), EPOLL_CTL_MOD, |
| 315 | dummy_fence_fd_.Get(), &event); |
| 316 | ALOGE_IF(ret < 0, |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 317 | "ProducerChannel::OnProducerPost: Failed to modify the shared " |
| 318 | "release fence to include the dummy fence: %s", |
| 319 | strerror(errno)); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 320 | |
| 321 | eventfd_t dummy_fence_count = 0ULL; |
| 322 | if (eventfd_read(dummy_fence_fd_.Get(), &dummy_fence_count) < 0) { |
| 323 | const int error = errno; |
| 324 | if (error != EAGAIN) { |
| 325 | ALOGE( |
| 326 | "ProducerChannel::ProducerChannel: Failed to read dummy fence, " |
| 327 | "error: %s", |
| 328 | strerror(error)); |
| 329 | return ErrorStatus(error); |
| 330 | } |
Corey Tabaka | 8a4e6a9 | 2017-04-20 13:42:02 -0700 | [diff] [blame] | 331 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 332 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 333 | ALOGW_IF(dummy_fence_count > 0, |
| 334 | "ProducerChannel::ProducerChannel: %" PRIu64 |
| 335 | " dummy fence(s) was signaled during last release/gain cycle " |
| 336 | "buffer_id=%d.", |
| 337 | dummy_fence_count, buffer_id()); |
| 338 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 339 | post_fence_ = std::move(acquire_fence); |
| 340 | producer_owns_ = false; |
| 341 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 342 | // Signal any interested consumers. If there are none, the buffer will stay |
| 343 | // in posted state until a consumer comes online. This behavior guarantees |
| 344 | // that no frame is silently dropped. |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 345 | pending_consumers_ = 0; |
| 346 | for (auto consumer : consumer_channels_) { |
| 347 | if (consumer->OnProducerPosted()) |
| 348 | pending_consumers_++; |
| 349 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 350 | ALOGD_IF(TRACE, "ProducerChannel::OnProducerPost: %d pending consumers", |
| 351 | pending_consumers_); |
| 352 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 353 | return {}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 354 | } |
| 355 | |
Corey Tabaka | d53870c | 2017-07-06 18:04:27 -0700 | [diff] [blame] | 356 | Status<LocalFence> ProducerChannel::OnProducerGain(Message& /*message*/) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 357 | ATRACE_NAME("ProducerChannel::OnGain"); |
| 358 | ALOGD_IF(TRACE, "ProducerChannel::OnGain: buffer_id=%d", buffer_id()); |
| 359 | if (producer_owns_) { |
| 360 | ALOGE("ProducerChanneL::OnGain: Already in gained state: channel=%d", |
| 361 | channel_id()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 362 | return ErrorStatus(EALREADY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | // There are still pending consumers, return busy. |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 366 | if (pending_consumers_ > 0) { |
| 367 | ALOGE( |
| 368 | "ProducerChannel::OnGain: Producer (id=%d) is gaining a buffer that " |
| 369 | "still has %d pending consumer(s).", |
| 370 | buffer_id(), pending_consumers_); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 371 | return ErrorStatus(EBUSY); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 372 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 373 | |
| 374 | ClearAvailable(); |
| 375 | producer_owns_ = true; |
Alex Vakulenko | 052f3ae | 2017-03-31 09:10:43 -0700 | [diff] [blame] | 376 | post_fence_.close(); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 377 | return {std::move(returned_fence_)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 378 | } |
| 379 | |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 380 | Status<RemoteChannelHandle> ProducerChannel::OnProducerDetach( |
| 381 | Message& message) { |
| 382 | ATRACE_NAME("ProducerChannel::OnProducerDetach"); |
| 383 | ALOGD_IF(TRACE, "ProducerChannel::OnProducerDetach: buffer_id=%d", |
| 384 | buffer_id()); |
| 385 | |
| 386 | uint64_t buffer_state = buffer_state_->load(); |
| 387 | if (!BufferHubDefs::IsBufferGained(buffer_state)) { |
| 388 | // Can only detach a BufferProducer when it's in gained state. |
| 389 | ALOGW( |
| 390 | "ProducerChannel::OnProducerDetach: The buffer (id=%d, state=0x%" PRIx64 |
| 391 | ") is not in gained state.", |
| 392 | buffer_id(), buffer_state); |
| 393 | return {}; |
| 394 | } |
| 395 | |
| 396 | int channel_id; |
| 397 | auto status = message.PushChannel(0, nullptr, &channel_id); |
| 398 | if (!status) { |
| 399 | ALOGE( |
| 400 | "ProducerChannel::OnProducerDetach: Failed to push detached buffer " |
| 401 | "channel: %s", |
| 402 | status.GetErrorMessage().c_str()); |
| 403 | return ErrorStatus(ENOMEM); |
| 404 | } |
| 405 | |
| 406 | // Make sure we unlock the buffer. |
| 407 | if (int ret = metadata_buffer_.Unlock()) { |
| 408 | ALOGE("ProducerChannel::OnProducerDetach: Failed to unlock metadata."); |
| 409 | return ErrorStatus(-ret); |
| 410 | }; |
| 411 | |
Jiwen 'Steve' Cai | 2e06c1c | 2018-07-30 21:35:32 -0700 | [diff] [blame] | 412 | std::unique_ptr<BufferChannel> channel = BufferChannel::Create( |
| 413 | service(), buffer_id(), channel_id, std::move(buffer_), |
| 414 | std::move(metadata_buffer_), user_metadata_size_); |
Jiwen 'Steve' Cai | a8049a2 | 2018-03-28 15:14:02 -0700 | [diff] [blame] | 415 | if (!channel) { |
| 416 | ALOGE("ProducerChannel::OnProducerDetach: Invalid buffer."); |
| 417 | return ErrorStatus(EINVAL); |
| 418 | } |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 419 | |
Jiwen 'Steve' Cai | a8049a2 | 2018-03-28 15:14:02 -0700 | [diff] [blame] | 420 | const auto channel_status = |
| 421 | service()->SetChannel(channel_id, std::move(channel)); |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 422 | if (!channel_status) { |
| 423 | // Technically, this should never fail, as we just pushed the channel. Note |
| 424 | // that LOG_FATAL will be stripped out in non-debug build. |
| 425 | LOG_FATAL( |
| 426 | "ProducerChannel::OnProducerDetach: Failed to set new detached buffer " |
| 427 | "channel: %s.", |
| 428 | channel_status.GetErrorMessage().c_str()); |
| 429 | } |
| 430 | |
| 431 | return status; |
| 432 | } |
| 433 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 434 | Status<LocalFence> ProducerChannel::OnConsumerAcquire(Message& /*message*/) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 435 | ATRACE_NAME("ProducerChannel::OnConsumerAcquire"); |
| 436 | ALOGD_IF(TRACE, "ProducerChannel::OnConsumerAcquire: buffer_id=%d", |
| 437 | buffer_id()); |
| 438 | if (producer_owns_) { |
| 439 | ALOGE("ProducerChannel::OnConsumerAcquire: Not in posted state!"); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 440 | return ErrorStatus(EBUSY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | // Return a borrowed fd to avoid unnecessary duplication of the underlying fd. |
| 444 | // Serialization just needs to read the handle. |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 445 | return {std::move(post_fence_)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 446 | } |
| 447 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 448 | Status<void> ProducerChannel::OnConsumerRelease(Message&, |
| 449 | LocalFence release_fence) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 450 | ATRACE_NAME("ProducerChannel::OnConsumerRelease"); |
| 451 | ALOGD_IF(TRACE, "ProducerChannel::OnConsumerRelease: buffer_id=%d", |
| 452 | buffer_id()); |
| 453 | if (producer_owns_) { |
| 454 | ALOGE("ProducerChannel::OnConsumerRelease: Not in acquired state!"); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 455 | return ErrorStatus(EBUSY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 456 | } |
| 457 | |
| 458 | // Attempt to merge the fences if necessary. |
| 459 | if (release_fence) { |
| 460 | if (returned_fence_) { |
Corey Tabaka | 3079cb7 | 2017-01-19 15:07:26 -0800 | [diff] [blame] | 461 | LocalFence merged_fence(sync_merge("bufferhub_merged", |
| 462 | returned_fence_.get_fd(), |
| 463 | release_fence.get_fd())); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 464 | const int error = errno; |
| 465 | if (!merged_fence) { |
| 466 | ALOGE("ProducerChannel::OnConsumerRelease: Failed to merge fences: %s", |
| 467 | strerror(error)); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 468 | return ErrorStatus(error); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 469 | } |
| 470 | returned_fence_ = std::move(merged_fence); |
| 471 | } else { |
| 472 | returned_fence_ = std::move(release_fence); |
| 473 | } |
| 474 | } |
| 475 | |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 476 | DecrementPendingConsumers(); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 477 | if (pending_consumers_ == 0) { |
| 478 | // Clear the producer bit atomically to transit into released state. This |
| 479 | // has to done by BufferHub as it requries synchronization among all |
| 480 | // consumers. |
| 481 | BufferHubDefs::ModifyBufferState(buffer_state_, |
| 482 | BufferHubDefs::kProducerStateBit, 0ULL); |
| 483 | ALOGD_IF(TRACE, |
| 484 | "ProducerChannel::OnConsumerRelease: releasing last consumer: " |
| 485 | "buffer_id=%d state=%" PRIx64 ".", |
| 486 | buffer_id(), buffer_state_->load()); |
| 487 | |
| 488 | if (orphaned_consumer_bit_mask_) { |
| 489 | ALOGW( |
| 490 | "ProducerChannel::OnConsumerRelease: orphaned buffer detected " |
| 491 | "during the this acquire/release cycle: id=%d orphaned=0x%" PRIx64 |
| 492 | " queue_index=%" PRIu64 ".", |
| 493 | buffer_id(), orphaned_consumer_bit_mask_, |
| 494 | metadata_header_->queue_index); |
| 495 | orphaned_consumer_bit_mask_ = 0; |
| 496 | } |
| 497 | |
| 498 | SignalAvailable(); |
| 499 | } |
| 500 | |
| 501 | ALOGE_IF(pending_consumers_ && |
| 502 | BufferHubDefs::IsBufferReleased(buffer_state_->load()), |
| 503 | "ProducerChannel::OnConsumerRelease: buffer state inconsistent: " |
| 504 | "pending_consumers=%d, buffer buffer is in releaed state.", |
| 505 | pending_consumers_); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 506 | return {}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 507 | } |
| 508 | |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 509 | void ProducerChannel::DecrementPendingConsumers() { |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 510 | if (pending_consumers_ == 0) { |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 511 | ALOGE("ProducerChannel::DecrementPendingConsumers: no pending consumer."); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 512 | return; |
| 513 | } |
| 514 | |
| 515 | --pending_consumers_; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 516 | ALOGD_IF(TRACE, |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 517 | "ProducerChannel::DecrementPendingConsumers: buffer_id=%d %d " |
| 518 | "consumers left", |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 519 | buffer_id(), pending_consumers_); |
| 520 | } |
| 521 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 522 | void ProducerChannel::OnConsumerOrphaned(ConsumerChannel* channel) { |
| 523 | // Ignore the orphaned consumer. |
Tianyu | 0c6b7ff | 2018-10-03 11:30:04 -0700 | [diff] [blame^] | 524 | DecrementPendingConsumers(); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 525 | |
| 526 | const uint64_t consumer_state_bit = channel->consumer_state_bit(); |
| 527 | ALOGE_IF(orphaned_consumer_bit_mask_ & consumer_state_bit, |
| 528 | "ProducerChannel::OnConsumerOrphaned: Consumer " |
| 529 | "(consumer_state_bit=%" PRIx64 ") is already orphaned.", |
| 530 | consumer_state_bit); |
| 531 | orphaned_consumer_bit_mask_ |= consumer_state_bit; |
| 532 | |
| 533 | // Atomically clear the fence state bit as an orphaned consumer will never |
| 534 | // signal a release fence. Also clear the buffer state as it won't be released |
| 535 | // as well. |
| 536 | fence_state_->fetch_and(~consumer_state_bit); |
| 537 | BufferHubDefs::ModifyBufferState(buffer_state_, consumer_state_bit, 0ULL); |
| 538 | |
| 539 | ALOGW( |
| 540 | "ProducerChannel::OnConsumerOrphaned: detected new orphaned consumer " |
| 541 | "buffer_id=%d consumer_state_bit=%" PRIx64 " queue_index=%" PRIu64 |
| 542 | " buffer_state=%" PRIx64 " fence_state=%" PRIx64 ".", |
| 543 | buffer_id(), consumer_state_bit, metadata_header_->queue_index, |
| 544 | buffer_state_->load(), fence_state_->load()); |
| 545 | } |
| 546 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 547 | void ProducerChannel::AddConsumer(ConsumerChannel* channel) { |
| 548 | consumer_channels_.push_back(channel); |
| 549 | } |
| 550 | |
| 551 | void ProducerChannel::RemoveConsumer(ConsumerChannel* channel) { |
| 552 | consumer_channels_.erase( |
| 553 | std::find(consumer_channels_.begin(), consumer_channels_.end(), channel)); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 554 | active_consumer_bit_mask_ &= ~channel->consumer_state_bit(); |
| 555 | |
| 556 | const uint64_t buffer_state = buffer_state_->load(); |
| 557 | if (BufferHubDefs::IsBufferPosted(buffer_state) || |
| 558 | BufferHubDefs::IsBufferAcquired(buffer_state)) { |
| 559 | // The consumer client is being destoryed without releasing. This could |
| 560 | // happen in corner cases when the consumer crashes. Here we mark it |
| 561 | // orphaned before remove it from producer. |
| 562 | OnConsumerOrphaned(channel); |
| 563 | } |
| 564 | |
| 565 | if (BufferHubDefs::IsBufferReleased(buffer_state) || |
| 566 | BufferHubDefs::IsBufferGained(buffer_state)) { |
| 567 | // The consumer is being close while it is suppose to signal a release |
| 568 | // fence. Signal the dummy fence here. |
| 569 | if (fence_state_->load() & channel->consumer_state_bit()) { |
| 570 | epoll_event event; |
| 571 | event.events = EPOLLIN; |
| 572 | event.data.u64 = channel->consumer_state_bit(); |
| 573 | if (epoll_ctl(release_fence_fd_.Get(), EPOLL_CTL_MOD, |
| 574 | dummy_fence_fd_.Get(), &event) < 0) { |
| 575 | ALOGE( |
| 576 | "ProducerChannel::RemoveConsumer: Failed to modify the shared " |
| 577 | "release fence to include the dummy fence: %s", |
| 578 | strerror(errno)); |
| 579 | return; |
| 580 | } |
| 581 | ALOGW( |
| 582 | "ProducerChannel::RemoveConsumer: signal dummy release fence " |
| 583 | "buffer_id=%d", |
| 584 | buffer_id()); |
| 585 | eventfd_write(dummy_fence_fd_.Get(), 1); |
| 586 | } |
| 587 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 588 | } |
| 589 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 590 | // Returns true if the given parameters match the underlying buffer parameters. |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 591 | bool ProducerChannel::CheckParameters(uint32_t width, uint32_t height, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 592 | uint32_t layer_count, uint32_t format, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 593 | uint64_t usage, |
| 594 | size_t user_metadata_size) { |
| 595 | return user_metadata_size == user_metadata_size_ && |
| 596 | buffer_.width() == width && buffer_.height() == height && |
| 597 | buffer_.layer_count() == layer_count && buffer_.format() == format && |
| 598 | buffer_.usage() == usage; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 599 | } |
| 600 | |
| 601 | } // namespace dvr |
| 602 | } // namespace android |