Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 1 | #include "producer_channel.h" |
| 2 | |
Alex Vakulenko | 4fe6058 | 2017-02-02 11:35:59 -0800 | [diff] [blame] | 3 | #include <log/log.h> |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 4 | #include <sync/sync.h> |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 5 | #include <sys/epoll.h> |
| 6 | #include <sys/eventfd.h> |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 7 | #include <sys/poll.h> |
| 8 | #include <utils/Trace.h> |
| 9 | |
| 10 | #include <algorithm> |
| 11 | #include <atomic> |
| 12 | #include <thread> |
| 13 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 14 | #include <private/dvr/bufferhub_rpc.h> |
| 15 | #include "consumer_channel.h" |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 16 | #include "detached_buffer_channel.h" |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 17 | |
| 18 | using android::pdx::BorrowedHandle; |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 19 | using android::pdx::ErrorStatus; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 20 | using android::pdx::Message; |
| 21 | using android::pdx::RemoteChannelHandle; |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 22 | using android::pdx::Status; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 23 | using android::pdx::rpc::BufferWrapper; |
| 24 | using android::pdx::rpc::DispatchRemoteMethod; |
| 25 | using android::pdx::rpc::WrapBuffer; |
| 26 | |
| 27 | namespace android { |
| 28 | namespace dvr { |
| 29 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 30 | namespace { |
| 31 | |
| 32 | static inline uint64_t FindNextClearedBit(uint64_t bits) { |
| 33 | return ~bits - (~bits & (~bits - 1)); |
| 34 | } |
| 35 | |
| 36 | } // namespace |
| 37 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 38 | ProducerChannel::ProducerChannel(BufferHubService* service, int channel_id, |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 39 | uint32_t width, uint32_t height, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 40 | uint32_t layer_count, uint32_t format, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 41 | uint64_t usage, size_t user_metadata_size, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 42 | int* error) |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 43 | : BufferHubChannel(service, channel_id, channel_id, kProducerType), |
| 44 | pending_consumers_(0), |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 45 | producer_owns_(true), |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 46 | user_metadata_size_(user_metadata_size), |
| 47 | metadata_buf_size_(BufferHubDefs::kMetadataHeaderSize + |
| 48 | user_metadata_size) { |
| 49 | if (int ret = buffer_.Alloc(width, height, layer_count, format, usage)) { |
Hendrik Wagenaar | 4d3590f | 2017-05-06 22:36:04 -0700 | [diff] [blame] | 50 | ALOGE("ProducerChannel::ProducerChannel: Failed to allocate buffer: %s", |
| 51 | strerror(-ret)); |
| 52 | *error = ret; |
| 53 | return; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 54 | } |
| 55 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 56 | if (int ret = metadata_buffer_.Alloc(metadata_buf_size_, /*height=*/1, |
| 57 | /*layer_count=*/1, |
| 58 | BufferHubDefs::kMetadataFormat, |
| 59 | BufferHubDefs::kMetadataUsage)) { |
| 60 | ALOGE("ProducerChannel::ProducerChannel: Failed to allocate metadata: %s", |
| 61 | strerror(-ret)); |
| 62 | *error = ret; |
| 63 | return; |
| 64 | } |
| 65 | |
| 66 | void* metadata_ptr = nullptr; |
| 67 | if (int ret = metadata_buffer_.Lock(BufferHubDefs::kMetadataUsage, /*x=*/0, |
| 68 | /*y=*/0, metadata_buf_size_, |
| 69 | /*height=*/1, &metadata_ptr)) { |
| 70 | ALOGE("ProducerChannel::ProducerChannel: Failed to lock metadata."); |
| 71 | *error = -ret; |
| 72 | return; |
| 73 | } |
| 74 | metadata_header_ = |
| 75 | reinterpret_cast<BufferHubDefs::MetadataHeader*>(metadata_ptr); |
| 76 | |
| 77 | // Using placement new here to reuse shared memory instead of new allocation |
| 78 | // and also initialize the value to zero. |
| 79 | buffer_state_ = |
| 80 | new (&metadata_header_->buffer_state) std::atomic<uint64_t>(0); |
| 81 | fence_state_ = |
| 82 | new (&metadata_header_->fence_state) std::atomic<uint64_t>(0); |
| 83 | |
| 84 | acquire_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC)); |
| 85 | release_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC)); |
| 86 | if (!acquire_fence_fd_ || !release_fence_fd_) { |
| 87 | ALOGE("ProducerChannel::ProducerChannel: Failed to create shared fences."); |
| 88 | *error = -EIO; |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | dummy_fence_fd_.Reset(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK)); |
| 93 | if (!dummy_fence_fd_) { |
| 94 | ALOGE("ProducerChannel::ProducerChannel: Failed to create dummy fences."); |
| 95 | *error = -EIO; |
| 96 | return; |
| 97 | } |
| 98 | |
| 99 | epoll_event event; |
| 100 | event.events = 0; |
| 101 | event.data.u64 = 0ULL; |
| 102 | if (epoll_ctl(release_fence_fd_.Get(), EPOLL_CTL_ADD, dummy_fence_fd_.Get(), |
| 103 | &event) < 0) { |
| 104 | ALOGE( |
| 105 | "ProducerChannel::ProducerChannel: Failed to modify the shared " |
| 106 | "release fence to include the dummy fence: %s", |
| 107 | strerror(errno)); |
| 108 | *error = -EIO; |
| 109 | return; |
| 110 | } |
| 111 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 112 | // Success. |
| 113 | *error = 0; |
| 114 | } |
| 115 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 116 | Status<std::shared_ptr<ProducerChannel>> ProducerChannel::Create( |
| 117 | BufferHubService* service, int channel_id, uint32_t width, uint32_t height, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 118 | uint32_t layer_count, uint32_t format, uint64_t usage, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 119 | size_t user_metadata_size) { |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 120 | int error; |
Jiwen 'Steve' Cai | 0057fdd | 2017-05-02 11:21:18 -0700 | [diff] [blame] | 121 | std::shared_ptr<ProducerChannel> producer( |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 122 | new ProducerChannel(service, channel_id, width, height, layer_count, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 123 | format, usage, user_metadata_size, &error)); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 124 | if (error < 0) |
| 125 | return ErrorStatus(-error); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 126 | else |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 127 | return {std::move(producer)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | ProducerChannel::~ProducerChannel() { |
Corey Tabaka | 3079cb7 | 2017-01-19 15:07:26 -0800 | [diff] [blame] | 131 | ALOGD_IF(TRACE, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 132 | "ProducerChannel::~ProducerChannel: channel_id=%d buffer_id=%d " |
| 133 | "state=%" PRIx64 ".", |
| 134 | channel_id(), buffer_id(), buffer_state_->load()); |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 135 | for (auto consumer : consumer_channels_) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 136 | consumer->OnProducerClosed(); |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 137 | } |
| 138 | Hangup(); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | BufferHubChannel::BufferInfo ProducerChannel::GetBufferInfo() const { |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 142 | // Derive the mask of signaled buffers in this producer / consumer set. |
| 143 | uint64_t signaled_mask = signaled() ? BufferHubDefs::kProducerStateBit : 0; |
| 144 | for (const ConsumerChannel* consumer : consumer_channels_) { |
| 145 | signaled_mask |= consumer->signaled() ? consumer->consumer_state_bit() : 0; |
| 146 | } |
| 147 | |
Hendrik Wagenaar | 4d3590f | 2017-05-06 22:36:04 -0700 | [diff] [blame] | 148 | return BufferInfo(buffer_id(), consumer_channels_.size(), buffer_.width(), |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 149 | buffer_.height(), buffer_.layer_count(), buffer_.format(), |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 150 | buffer_.usage(), pending_consumers_, buffer_state_->load(), |
Jiwen 'Steve' Cai | 2f26033 | 2018-02-15 18:39:47 -0800 | [diff] [blame] | 151 | signaled_mask, metadata_header_->queue_index); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | void ProducerChannel::HandleImpulse(Message& message) { |
| 155 | ATRACE_NAME("ProducerChannel::HandleImpulse"); |
| 156 | switch (message.GetOp()) { |
| 157 | case BufferHubRPC::ProducerGain::Opcode: |
| 158 | OnProducerGain(message); |
| 159 | break; |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 160 | case BufferHubRPC::ProducerPost::Opcode: |
| 161 | OnProducerPost(message, {}); |
| 162 | break; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 163 | } |
| 164 | } |
| 165 | |
| 166 | bool ProducerChannel::HandleMessage(Message& message) { |
| 167 | ATRACE_NAME("ProducerChannel::HandleMessage"); |
| 168 | switch (message.GetOp()) { |
| 169 | case BufferHubRPC::GetBuffer::Opcode: |
| 170 | DispatchRemoteMethod<BufferHubRPC::GetBuffer>( |
| 171 | *this, &ProducerChannel::OnGetBuffer, message); |
| 172 | return true; |
| 173 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 174 | case BufferHubRPC::NewConsumer::Opcode: |
| 175 | DispatchRemoteMethod<BufferHubRPC::NewConsumer>( |
| 176 | *this, &ProducerChannel::OnNewConsumer, message); |
| 177 | return true; |
| 178 | |
| 179 | case BufferHubRPC::ProducerPost::Opcode: |
| 180 | DispatchRemoteMethod<BufferHubRPC::ProducerPost>( |
| 181 | *this, &ProducerChannel::OnProducerPost, message); |
| 182 | return true; |
| 183 | |
| 184 | case BufferHubRPC::ProducerGain::Opcode: |
| 185 | DispatchRemoteMethod<BufferHubRPC::ProducerGain>( |
| 186 | *this, &ProducerChannel::OnProducerGain, message); |
| 187 | return true; |
| 188 | |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 189 | case BufferHubRPC::ProducerBufferDetach::Opcode: |
| 190 | DispatchRemoteMethod<BufferHubRPC::ProducerBufferDetach>( |
| 191 | *this, &ProducerChannel::OnProducerDetach, message); |
| 192 | return true; |
| 193 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 194 | default: |
| 195 | return false; |
| 196 | } |
| 197 | } |
| 198 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 199 | BufferDescription<BorrowedHandle> ProducerChannel::GetBuffer( |
| 200 | uint64_t buffer_state_bit) { |
| 201 | return { |
| 202 | buffer_, metadata_buffer_, buffer_id(), |
| 203 | buffer_state_bit, acquire_fence_fd_.Borrow(), release_fence_fd_.Borrow()}; |
| 204 | } |
| 205 | |
| 206 | Status<BufferDescription<BorrowedHandle>> ProducerChannel::OnGetBuffer( |
Corey Tabaka | d53870c | 2017-07-06 18:04:27 -0700 | [diff] [blame] | 207 | Message& /*message*/) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 208 | ATRACE_NAME("ProducerChannel::OnGetBuffer"); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 209 | ALOGD_IF(TRACE, "ProducerChannel::OnGetBuffer: buffer=%d, state=%" PRIx64 ".", |
| 210 | buffer_id(), buffer_state_->load()); |
| 211 | return {GetBuffer(BufferHubDefs::kProducerStateBit)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 212 | } |
| 213 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 214 | Status<RemoteChannelHandle> ProducerChannel::CreateConsumer(Message& message) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 215 | ATRACE_NAME("ProducerChannel::CreateConsumer"); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 216 | ALOGD_IF(TRACE, |
| 217 | "ProducerChannel::CreateConsumer: buffer_id=%d, producer_owns=%d", |
| 218 | buffer_id(), producer_owns_); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 219 | |
| 220 | int channel_id; |
| 221 | auto status = message.PushChannel(0, nullptr, &channel_id); |
| 222 | if (!status) { |
| 223 | ALOGE( |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 224 | "ProducerChannel::CreateConsumer: Failed to push consumer channel: %s", |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 225 | status.GetErrorMessage().c_str()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 226 | return ErrorStatus(ENOMEM); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 227 | } |
| 228 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 229 | // Try find the next consumer state bit which has not been claimed by any |
| 230 | // consumer yet. |
| 231 | uint64_t consumer_state_bit = FindNextClearedBit( |
| 232 | active_consumer_bit_mask_ | orphaned_consumer_bit_mask_ | |
| 233 | BufferHubDefs::kProducerStateBit); |
| 234 | if (consumer_state_bit == 0ULL) { |
| 235 | ALOGE( |
| 236 | "ProducerChannel::CreateConsumer: reached the maximum mumber of " |
| 237 | "consumers per producer: 63."); |
| 238 | return ErrorStatus(E2BIG); |
| 239 | } |
| 240 | |
| 241 | auto consumer = |
| 242 | std::make_shared<ConsumerChannel>(service(), buffer_id(), channel_id, |
| 243 | consumer_state_bit, shared_from_this()); |
Alex Vakulenko | f0a7bd0 | 2017-03-31 18:06:19 -0700 | [diff] [blame] | 244 | const auto channel_status = service()->SetChannel(channel_id, consumer); |
| 245 | if (!channel_status) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 246 | ALOGE( |
| 247 | "ProducerChannel::CreateConsumer: failed to set new consumer channel: " |
| 248 | "%s", |
Alex Vakulenko | f0a7bd0 | 2017-03-31 18:06:19 -0700 | [diff] [blame] | 249 | channel_status.GetErrorMessage().c_str()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 250 | return ErrorStatus(ENOMEM); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 251 | } |
| 252 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 253 | if (!producer_owns_ && |
| 254 | !BufferHubDefs::IsBufferReleased(buffer_state_->load())) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 255 | // Signal the new consumer when adding it to a posted producer. |
| 256 | if (consumer->OnProducerPosted()) |
| 257 | pending_consumers_++; |
| 258 | } |
| 259 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 260 | active_consumer_bit_mask_ |= consumer_state_bit; |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 261 | return {status.take()}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 262 | } |
| 263 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 264 | Status<RemoteChannelHandle> ProducerChannel::OnNewConsumer(Message& message) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 265 | ATRACE_NAME("ProducerChannel::OnNewConsumer"); |
| 266 | ALOGD_IF(TRACE, "ProducerChannel::OnNewConsumer: buffer_id=%d", buffer_id()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 267 | return CreateConsumer(message); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 268 | } |
| 269 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 270 | Status<void> ProducerChannel::OnProducerPost( |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 271 | Message&, LocalFence acquire_fence) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 272 | ATRACE_NAME("ProducerChannel::OnProducerPost"); |
| 273 | ALOGD_IF(TRACE, "ProducerChannel::OnProducerPost: buffer_id=%d", buffer_id()); |
| 274 | if (!producer_owns_) { |
| 275 | ALOGE("ProducerChannel::OnProducerPost: Not in gained state!"); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 276 | return ErrorStatus(EBUSY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 277 | } |
| 278 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 279 | epoll_event event; |
| 280 | event.events = 0; |
| 281 | event.data.u64 = 0ULL; |
| 282 | int ret = epoll_ctl(release_fence_fd_.Get(), EPOLL_CTL_MOD, |
| 283 | dummy_fence_fd_.Get(), &event); |
| 284 | ALOGE_IF(ret < 0, |
| 285 | "ProducerChannel::OnProducerPost: Failed to modify the shared " |
| 286 | "release fence to include the dummy fence: %s", |
| 287 | strerror(errno)); |
| 288 | |
| 289 | eventfd_t dummy_fence_count = 0ULL; |
| 290 | if (eventfd_read(dummy_fence_fd_.Get(), &dummy_fence_count) < 0) { |
| 291 | const int error = errno; |
| 292 | if (error != EAGAIN) { |
| 293 | ALOGE( |
| 294 | "ProducerChannel::ProducerChannel: Failed to read dummy fence, " |
| 295 | "error: %s", |
| 296 | strerror(error)); |
| 297 | return ErrorStatus(error); |
| 298 | } |
Corey Tabaka | 8a4e6a9 | 2017-04-20 13:42:02 -0700 | [diff] [blame] | 299 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 300 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 301 | ALOGW_IF(dummy_fence_count > 0, |
| 302 | "ProducerChannel::ProducerChannel: %" PRIu64 |
| 303 | " dummy fence(s) was signaled during last release/gain cycle " |
| 304 | "buffer_id=%d.", |
| 305 | dummy_fence_count, buffer_id()); |
| 306 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 307 | post_fence_ = std::move(acquire_fence); |
| 308 | producer_owns_ = false; |
| 309 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 310 | // Signal any interested consumers. If there are none, the buffer will stay |
| 311 | // in posted state until a consumer comes online. This behavior guarantees |
| 312 | // that no frame is silently dropped. |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 313 | pending_consumers_ = 0; |
| 314 | for (auto consumer : consumer_channels_) { |
| 315 | if (consumer->OnProducerPosted()) |
| 316 | pending_consumers_++; |
| 317 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 318 | ALOGD_IF(TRACE, "ProducerChannel::OnProducerPost: %d pending consumers", |
| 319 | pending_consumers_); |
| 320 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 321 | return {}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 322 | } |
| 323 | |
Corey Tabaka | d53870c | 2017-07-06 18:04:27 -0700 | [diff] [blame] | 324 | Status<LocalFence> ProducerChannel::OnProducerGain(Message& /*message*/) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 325 | ATRACE_NAME("ProducerChannel::OnGain"); |
| 326 | ALOGD_IF(TRACE, "ProducerChannel::OnGain: buffer_id=%d", buffer_id()); |
| 327 | if (producer_owns_) { |
| 328 | ALOGE("ProducerChanneL::OnGain: Already in gained state: channel=%d", |
| 329 | channel_id()); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 330 | return ErrorStatus(EALREADY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 331 | } |
| 332 | |
| 333 | // There are still pending consumers, return busy. |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 334 | if (pending_consumers_ > 0) { |
| 335 | ALOGE( |
| 336 | "ProducerChannel::OnGain: Producer (id=%d) is gaining a buffer that " |
| 337 | "still has %d pending consumer(s).", |
| 338 | buffer_id(), pending_consumers_); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 339 | return ErrorStatus(EBUSY); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 340 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 341 | |
| 342 | ClearAvailable(); |
| 343 | producer_owns_ = true; |
Alex Vakulenko | 052f3ae | 2017-03-31 09:10:43 -0700 | [diff] [blame] | 344 | post_fence_.close(); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 345 | return {std::move(returned_fence_)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 346 | } |
| 347 | |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 348 | Status<RemoteChannelHandle> ProducerChannel::OnProducerDetach( |
| 349 | Message& message) { |
| 350 | ATRACE_NAME("ProducerChannel::OnProducerDetach"); |
| 351 | ALOGD_IF(TRACE, "ProducerChannel::OnProducerDetach: buffer_id=%d", |
| 352 | buffer_id()); |
| 353 | |
| 354 | uint64_t buffer_state = buffer_state_->load(); |
| 355 | if (!BufferHubDefs::IsBufferGained(buffer_state)) { |
| 356 | // Can only detach a BufferProducer when it's in gained state. |
| 357 | ALOGW( |
| 358 | "ProducerChannel::OnProducerDetach: The buffer (id=%d, state=0x%" PRIx64 |
| 359 | ") is not in gained state.", |
| 360 | buffer_id(), buffer_state); |
| 361 | return {}; |
| 362 | } |
| 363 | |
| 364 | int channel_id; |
| 365 | auto status = message.PushChannel(0, nullptr, &channel_id); |
| 366 | if (!status) { |
| 367 | ALOGE( |
| 368 | "ProducerChannel::OnProducerDetach: Failed to push detached buffer " |
| 369 | "channel: %s", |
| 370 | status.GetErrorMessage().c_str()); |
| 371 | return ErrorStatus(ENOMEM); |
| 372 | } |
| 373 | |
| 374 | // Make sure we unlock the buffer. |
| 375 | if (int ret = metadata_buffer_.Unlock()) { |
| 376 | ALOGE("ProducerChannel::OnProducerDetach: Failed to unlock metadata."); |
| 377 | return ErrorStatus(-ret); |
| 378 | }; |
| 379 | |
Jiwen 'Steve' Cai | a8049a2 | 2018-03-28 15:14:02 -0700 | [diff] [blame^] | 380 | std::unique_ptr<DetachedBufferChannel> channel = |
| 381 | DetachedBufferChannel::Create( |
| 382 | service(), buffer_id(), channel_id, std::move(buffer_), |
| 383 | std::move(metadata_buffer_), user_metadata_size_); |
| 384 | if (!channel) { |
| 385 | ALOGE("ProducerChannel::OnProducerDetach: Invalid buffer."); |
| 386 | return ErrorStatus(EINVAL); |
| 387 | } |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 388 | |
Jiwen 'Steve' Cai | a8049a2 | 2018-03-28 15:14:02 -0700 | [diff] [blame^] | 389 | const auto channel_status = |
| 390 | service()->SetChannel(channel_id, std::move(channel)); |
Jiwen 'Steve' Cai | 23c1a73 | 2018-03-12 12:16:47 -0700 | [diff] [blame] | 391 | if (!channel_status) { |
| 392 | // Technically, this should never fail, as we just pushed the channel. Note |
| 393 | // that LOG_FATAL will be stripped out in non-debug build. |
| 394 | LOG_FATAL( |
| 395 | "ProducerChannel::OnProducerDetach: Failed to set new detached buffer " |
| 396 | "channel: %s.", |
| 397 | channel_status.GetErrorMessage().c_str()); |
| 398 | } |
| 399 | |
| 400 | return status; |
| 401 | } |
| 402 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 403 | Status<LocalFence> ProducerChannel::OnConsumerAcquire(Message& /*message*/) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 404 | ATRACE_NAME("ProducerChannel::OnConsumerAcquire"); |
| 405 | ALOGD_IF(TRACE, "ProducerChannel::OnConsumerAcquire: buffer_id=%d", |
| 406 | buffer_id()); |
| 407 | if (producer_owns_) { |
| 408 | ALOGE("ProducerChannel::OnConsumerAcquire: Not in posted state!"); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 409 | return ErrorStatus(EBUSY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | // Return a borrowed fd to avoid unnecessary duplication of the underlying fd. |
| 413 | // Serialization just needs to read the handle. |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 414 | return {std::move(post_fence_)}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 415 | } |
| 416 | |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 417 | Status<void> ProducerChannel::OnConsumerRelease(Message&, |
| 418 | LocalFence release_fence) { |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 419 | ATRACE_NAME("ProducerChannel::OnConsumerRelease"); |
| 420 | ALOGD_IF(TRACE, "ProducerChannel::OnConsumerRelease: buffer_id=%d", |
| 421 | buffer_id()); |
| 422 | if (producer_owns_) { |
| 423 | ALOGE("ProducerChannel::OnConsumerRelease: Not in acquired state!"); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 424 | return ErrorStatus(EBUSY); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 425 | } |
| 426 | |
| 427 | // Attempt to merge the fences if necessary. |
| 428 | if (release_fence) { |
| 429 | if (returned_fence_) { |
Corey Tabaka | 3079cb7 | 2017-01-19 15:07:26 -0800 | [diff] [blame] | 430 | LocalFence merged_fence(sync_merge("bufferhub_merged", |
| 431 | returned_fence_.get_fd(), |
| 432 | release_fence.get_fd())); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 433 | const int error = errno; |
| 434 | if (!merged_fence) { |
| 435 | ALOGE("ProducerChannel::OnConsumerRelease: Failed to merge fences: %s", |
| 436 | strerror(error)); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 437 | return ErrorStatus(error); |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 438 | } |
| 439 | returned_fence_ = std::move(merged_fence); |
| 440 | } else { |
| 441 | returned_fence_ = std::move(release_fence); |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | OnConsumerIgnored(); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 446 | if (pending_consumers_ == 0) { |
| 447 | // Clear the producer bit atomically to transit into released state. This |
| 448 | // has to done by BufferHub as it requries synchronization among all |
| 449 | // consumers. |
| 450 | BufferHubDefs::ModifyBufferState(buffer_state_, |
| 451 | BufferHubDefs::kProducerStateBit, 0ULL); |
| 452 | ALOGD_IF(TRACE, |
| 453 | "ProducerChannel::OnConsumerRelease: releasing last consumer: " |
| 454 | "buffer_id=%d state=%" PRIx64 ".", |
| 455 | buffer_id(), buffer_state_->load()); |
| 456 | |
| 457 | if (orphaned_consumer_bit_mask_) { |
| 458 | ALOGW( |
| 459 | "ProducerChannel::OnConsumerRelease: orphaned buffer detected " |
| 460 | "during the this acquire/release cycle: id=%d orphaned=0x%" PRIx64 |
| 461 | " queue_index=%" PRIu64 ".", |
| 462 | buffer_id(), orphaned_consumer_bit_mask_, |
| 463 | metadata_header_->queue_index); |
| 464 | orphaned_consumer_bit_mask_ = 0; |
| 465 | } |
| 466 | |
| 467 | SignalAvailable(); |
| 468 | } |
| 469 | |
| 470 | ALOGE_IF(pending_consumers_ && |
| 471 | BufferHubDefs::IsBufferReleased(buffer_state_->load()), |
| 472 | "ProducerChannel::OnConsumerRelease: buffer state inconsistent: " |
| 473 | "pending_consumers=%d, buffer buffer is in releaed state.", |
| 474 | pending_consumers_); |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 475 | return {}; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | void ProducerChannel::OnConsumerIgnored() { |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 479 | if (pending_consumers_ == 0) { |
| 480 | ALOGE("ProducerChannel::OnConsumerIgnored: no pending consumer."); |
| 481 | return; |
| 482 | } |
| 483 | |
| 484 | --pending_consumers_; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 485 | ALOGD_IF(TRACE, |
| 486 | "ProducerChannel::OnConsumerIgnored: buffer_id=%d %d consumers left", |
| 487 | buffer_id(), pending_consumers_); |
| 488 | } |
| 489 | |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 490 | void ProducerChannel::OnConsumerOrphaned(ConsumerChannel* channel) { |
| 491 | // Ignore the orphaned consumer. |
| 492 | OnConsumerIgnored(); |
| 493 | |
| 494 | const uint64_t consumer_state_bit = channel->consumer_state_bit(); |
| 495 | ALOGE_IF(orphaned_consumer_bit_mask_ & consumer_state_bit, |
| 496 | "ProducerChannel::OnConsumerOrphaned: Consumer " |
| 497 | "(consumer_state_bit=%" PRIx64 ") is already orphaned.", |
| 498 | consumer_state_bit); |
| 499 | orphaned_consumer_bit_mask_ |= consumer_state_bit; |
| 500 | |
| 501 | // Atomically clear the fence state bit as an orphaned consumer will never |
| 502 | // signal a release fence. Also clear the buffer state as it won't be released |
| 503 | // as well. |
| 504 | fence_state_->fetch_and(~consumer_state_bit); |
| 505 | BufferHubDefs::ModifyBufferState(buffer_state_, consumer_state_bit, 0ULL); |
| 506 | |
| 507 | ALOGW( |
| 508 | "ProducerChannel::OnConsumerOrphaned: detected new orphaned consumer " |
| 509 | "buffer_id=%d consumer_state_bit=%" PRIx64 " queue_index=%" PRIu64 |
| 510 | " buffer_state=%" PRIx64 " fence_state=%" PRIx64 ".", |
| 511 | buffer_id(), consumer_state_bit, metadata_header_->queue_index, |
| 512 | buffer_state_->load(), fence_state_->load()); |
| 513 | } |
| 514 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 515 | void ProducerChannel::AddConsumer(ConsumerChannel* channel) { |
| 516 | consumer_channels_.push_back(channel); |
| 517 | } |
| 518 | |
| 519 | void ProducerChannel::RemoveConsumer(ConsumerChannel* channel) { |
| 520 | consumer_channels_.erase( |
| 521 | std::find(consumer_channels_.begin(), consumer_channels_.end(), channel)); |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 522 | active_consumer_bit_mask_ &= ~channel->consumer_state_bit(); |
| 523 | |
| 524 | const uint64_t buffer_state = buffer_state_->load(); |
| 525 | if (BufferHubDefs::IsBufferPosted(buffer_state) || |
| 526 | BufferHubDefs::IsBufferAcquired(buffer_state)) { |
| 527 | // The consumer client is being destoryed without releasing. This could |
| 528 | // happen in corner cases when the consumer crashes. Here we mark it |
| 529 | // orphaned before remove it from producer. |
| 530 | OnConsumerOrphaned(channel); |
| 531 | } |
| 532 | |
| 533 | if (BufferHubDefs::IsBufferReleased(buffer_state) || |
| 534 | BufferHubDefs::IsBufferGained(buffer_state)) { |
| 535 | // The consumer is being close while it is suppose to signal a release |
| 536 | // fence. Signal the dummy fence here. |
| 537 | if (fence_state_->load() & channel->consumer_state_bit()) { |
| 538 | epoll_event event; |
| 539 | event.events = EPOLLIN; |
| 540 | event.data.u64 = channel->consumer_state_bit(); |
| 541 | if (epoll_ctl(release_fence_fd_.Get(), EPOLL_CTL_MOD, |
| 542 | dummy_fence_fd_.Get(), &event) < 0) { |
| 543 | ALOGE( |
| 544 | "ProducerChannel::RemoveConsumer: Failed to modify the shared " |
| 545 | "release fence to include the dummy fence: %s", |
| 546 | strerror(errno)); |
| 547 | return; |
| 548 | } |
| 549 | ALOGW( |
| 550 | "ProducerChannel::RemoveConsumer: signal dummy release fence " |
| 551 | "buffer_id=%d", |
| 552 | buffer_id()); |
| 553 | eventfd_write(dummy_fence_fd_.Get(), 1); |
| 554 | } |
| 555 | } |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 556 | } |
| 557 | |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 558 | // Returns true if the given parameters match the underlying buffer parameters. |
Corey Tabaka | cd52dd9 | 2017-04-07 18:03:57 -0700 | [diff] [blame] | 559 | bool ProducerChannel::CheckParameters(uint32_t width, uint32_t height, |
Hendrik Wagenaar | 108e84f | 2017-05-07 22:19:17 -0700 | [diff] [blame] | 560 | uint32_t layer_count, uint32_t format, |
Corey Tabaka | 52ea25c | 2017-09-13 18:02:48 -0700 | [diff] [blame] | 561 | uint64_t usage, |
| 562 | size_t user_metadata_size) { |
| 563 | return user_metadata_size == user_metadata_size_ && |
| 564 | buffer_.width() == width && buffer_.height() == height && |
| 565 | buffer_.layer_count() == layer_count && buffer_.format() == format && |
| 566 | buffer_.usage() == usage; |
Alex Vakulenko | e4eec20 | 2017-01-27 14:41:04 -0800 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | } // namespace dvr |
| 570 | } // namespace android |