Remove legacy persistent BufferHub use case
This CL cleans up unused BufferHub code path. The motivation of doing
this is multifold:
1. Reduces future maintainace cost (e.g. when moving to libgui, there
will be less code to rename and re-style).
2. Removes unnecessary code complexity so that the code base is easier
and cleaner for future new reader to understand.
3. Prepares future work for supporting standalone GraphicBuffer in
BufferHub by avoid future logical and naming conflicts between
legacy PersistentBuffer/Detach/Attach and newly proposed detached
GraphicBuffer in BufferHub.
Bug: 70046255
Bug: 70912269
Test: buffer_hub-test, buffer_hub_queue-test,
buffer_hub_queue_producer-test, dvr_api-test, libgui_test
Change-Id: Ie9a0f55e3f620769bac58c81439d840402451b82
diff --git a/services/vr/bufferhubd/buffer_hub.cpp b/services/vr/bufferhubd/buffer_hub.cpp
index cdb1f91..1eb4ef9 100644
--- a/services/vr/bufferhubd/buffer_hub.cpp
+++ b/services/vr/bufferhubd/buffer_hub.cpp
@@ -62,8 +62,6 @@
stream << std::setw(18) << "Signaled";
stream << " ";
stream << std::setw(10) << "Index";
- stream << " ";
- stream << "Name";
stream << std::endl;
for (const auto& channel : channels) {
@@ -100,8 +98,6 @@
stream << std::dec << std::setfill(' ');
stream << " ";
stream << std::setw(8) << info.index;
- stream << " ";
- stream << info.name;
stream << std::endl;
}
}
@@ -166,9 +162,7 @@
stream << std::right;
stream << std::setw(6) << "Id";
stream << " ";
- stream << std::setw(14) << "Geometry";
- stream << " ";
- stream << "Name";
+ stream << std::setw(14) << "Info";
stream << std::endl;
for (const auto& channel : channels) {
@@ -216,16 +210,6 @@
*this, &BufferHubService::OnCreateBuffer, message);
return {};
- case BufferHubRPC::CreatePersistentBuffer::Opcode:
- DispatchRemoteMethod<BufferHubRPC::CreatePersistentBuffer>(
- *this, &BufferHubService::OnCreatePersistentBuffer, message);
- return {};
-
- case BufferHubRPC::GetPersistentBuffer::Opcode:
- DispatchRemoteMethod<BufferHubRPC::GetPersistentBuffer>(
- *this, &BufferHubService::OnGetPersistentBuffer, message);
- return {};
-
case BufferHubRPC::CreateProducerQueue::Opcode:
DispatchRemoteMethod<BufferHubRPC::CreateProducerQueue>(
*this, &BufferHubService::OnCreateProducerQueue, message);
@@ -236,12 +220,6 @@
}
}
-void BufferHubService::OnChannelClose(Message&,
- const std::shared_ptr<Channel>& channel) {
- if (auto buffer = std::static_pointer_cast<BufferHubChannel>(channel))
- buffer->Detach();
-}
-
Status<void> BufferHubService::OnCreateBuffer(Message& message, uint32_t width,
uint32_t height, uint32_t format,
uint64_t usage,
@@ -273,117 +251,6 @@
}
}
-Status<void> BufferHubService::OnCreatePersistentBuffer(
- Message& message, const std::string& name, int user_id, int group_id,
- uint32_t width, uint32_t height, uint32_t format, uint64_t usage,
- size_t meta_size_bytes) {
- const uint32_t kDefaultLayerCount = 1;
- const int channel_id = message.GetChannelId();
- ALOGD_IF(TRACE,
- "BufferHubService::OnCreatePersistentBuffer: channel_id=%d name=%s "
- "user_id=%d group_id=%d width=%u height=%u format=%u "
- "usage=%" PRIx64 " meta_size_bytes=%zu",
- channel_id, name.c_str(), user_id, group_id, width, height, format,
- usage, meta_size_bytes);
-
- // See if this channel is already attached to a buffer.
- if (const auto channel = message.GetChannel<BufferHubChannel>()) {
- ALOGE(
- "BufferHubService::OnCreatePersistentBuffer: Channel already attached "
- "to buffer: channel_id=%d buffer_id=%d",
- channel_id, channel->buffer_id());
- return ErrorStatus(EALREADY);
- }
-
- const int euid = message.GetEffectiveUserId();
- const int egid = message.GetEffectiveGroupId();
-
- if (auto buffer = GetNamedBuffer(name)) {
- if (!buffer->CheckAccess(euid, egid)) {
- ALOGE(
- "BufferHubService::OnCreatePersistentBuffer: Requesting process does "
- "not have permission to access named buffer: name=%s euid=%d egid=%d",
- name.c_str(), euid, euid);
- return ErrorStatus(EPERM);
- } else if (!buffer->CheckParameters(width, height, kDefaultLayerCount,
- format, usage, meta_size_bytes)) {
- ALOGE(
- "BufferHubService::OnCreatePersistentBuffer: Requested an existing "
- "buffer with different parameters: name=%s",
- name.c_str());
- return ErrorStatus(EINVAL);
- } else if (!buffer->IsDetached()) {
- ALOGE(
- "BufferHubService::OnCreatePersistentBuffer: Requesting a persistent "
- "buffer that is already attached to a channel: name=%s",
- name.c_str());
- return ErrorStatus(EINVAL);
- } else {
- buffer->Attach(channel_id);
- message.SetChannel(buffer);
- return {};
- }
- } else {
- auto status = ProducerChannel::Create(this, channel_id, width, height,
- kDefaultLayerCount, format, usage,
- meta_size_bytes);
- if (!status) {
- ALOGE("BufferHubService::OnCreateBuffer: Failed to create producer!!");
- return status.error_status();
- }
- auto persistent_buffer = status.take();
- auto make_persistent_status = persistent_buffer->OnProducerMakePersistent(
- message, name, user_id, group_id);
- if (make_persistent_status)
- message.SetChannel(persistent_buffer);
- return make_persistent_status;
- }
-}
-
-Status<void> BufferHubService::OnGetPersistentBuffer(Message& message,
- const std::string& name) {
- const int channel_id = message.GetChannelId();
- ALOGD_IF(TRACE,
- "BufferHubService::OnGetPersistentBuffer: channel_id=%d name=%s",
- channel_id, name.c_str());
-
- // See if this channel is already attached to a buffer.
- if (const auto channel = message.GetChannel<BufferHubChannel>()) {
- ALOGE(
- "BufferHubService::OnGetPersistentBuffer: Channel already attached to "
- "buffer: channel_id=%d buffer_id=%d",
- channel_id, channel->buffer_id());
- return ErrorStatus(EALREADY);
- }
-
- const int euid = message.GetEffectiveUserId();
- const int egid = message.GetEffectiveGroupId();
-
- if (auto buffer = GetNamedBuffer(name)) {
- if (!buffer->CheckAccess(euid, egid)) {
- ALOGE(
- "BufferHubService::OnGetPersistentBuffer: Requesting process does "
- "not have permission to access named buffer: name=%s euid=%d egid=%d",
- name.c_str(), euid, egid);
- return ErrorStatus(EPERM);
- } else if (!buffer->IsDetached()) {
- ALOGE(
- "BufferHubService::OnGetPersistentBuffer: Requesting a persistent "
- "buffer that is already attached to a channel: name=%s",
- name.c_str());
- return ErrorStatus(EINVAL);
- } else {
- buffer->Attach(channel_id);
- message.SetChannel(buffer);
- return {};
- }
- } else {
- ALOGE("BufferHubService::OnGetPersistentBuffer: Buffer \"%s\" not found!",
- name.c_str());
- return ErrorStatus(ENOENT);
- }
-}
-
Status<QueueInfo> BufferHubService::OnCreateProducerQueue(
pdx::Message& message, const ProducerQueueConfig& producer_config,
const UsagePolicy& usage_policy) {
@@ -410,52 +277,17 @@
}
}
-bool BufferHubService::AddNamedBuffer(
- const std::string& name, const std::shared_ptr<ProducerChannel>& buffer) {
- auto search = named_buffers_.find(name);
- if (search == named_buffers_.end()) {
- named_buffers_.emplace(name, buffer);
- return true;
- } else {
- return false;
- }
-}
-
-std::shared_ptr<ProducerChannel> BufferHubService::GetNamedBuffer(
- const std::string& name) {
- auto search = named_buffers_.find(name);
- if (search != named_buffers_.end())
- return search->second;
- else
- return nullptr;
-}
-
-bool BufferHubService::RemoveNamedBuffer(const ProducerChannel& buffer) {
- for (auto it = named_buffers_.begin(); it != named_buffers_.end();) {
- if (it->second.get() == &buffer) {
- named_buffers_.erase(it);
- return true;
- }
- ++it;
- }
- return false;
-}
-
void BufferHubChannel::SignalAvailable() {
ATRACE_NAME("BufferHubChannel::SignalAvailable");
ALOGD_IF(TRACE,
"BufferHubChannel::SignalAvailable: channel_id=%d buffer_id=%d",
channel_id(), buffer_id());
- if (!IsDetached()) {
- signaled_ = true;
- const auto status = service_->ModifyChannelEvents(channel_id_, 0, POLLIN);
- ALOGE_IF(!status,
- "BufferHubChannel::SignalAvailable: failed to signal availability "
- "channel_id=%d: %s",
- channel_id_, status.GetErrorMessage().c_str());
- } else {
- ALOGD_IF(TRACE, "BufferHubChannel::SignalAvailable: detached buffer.");
- }
+ signaled_ = true;
+ const auto status = service_->ModifyChannelEvents(channel_id_, 0, POLLIN);
+ ALOGE_IF(!status,
+ "BufferHubChannel::SignalAvailable: failed to signal availability "
+ "channel_id=%d: %s",
+ channel_id_, status.GetErrorMessage().c_str());
}
void BufferHubChannel::ClearAvailable() {
@@ -463,31 +295,23 @@
ALOGD_IF(TRACE,
"BufferHubChannel::ClearAvailable: channel_id=%d buffer_id=%d",
channel_id(), buffer_id());
- if (!IsDetached()) {
- signaled_ = false;
- const auto status = service_->ModifyChannelEvents(channel_id_, POLLIN, 0);
- ALOGE_IF(!status,
- "BufferHubChannel::ClearAvailable: failed to clear availability "
- "channel_id=%d: %s",
- channel_id_, status.GetErrorMessage().c_str());
- } else {
- ALOGD_IF(TRACE, "BufferHubChannel::ClearAvailable: detached buffer.");
- }
+ signaled_ = false;
+ const auto status = service_->ModifyChannelEvents(channel_id_, POLLIN, 0);
+ ALOGE_IF(!status,
+ "BufferHubChannel::ClearAvailable: failed to clear availability "
+ "channel_id=%d: %s",
+ channel_id_, status.GetErrorMessage().c_str());
}
void BufferHubChannel::Hangup() {
ATRACE_NAME("BufferHubChannel::Hangup");
ALOGD_IF(TRACE, "BufferHubChannel::Hangup: channel_id=%d buffer_id=%d",
channel_id(), buffer_id());
- if (!IsDetached()) {
- const auto status = service_->ModifyChannelEvents(channel_id_, 0, POLLHUP);
- ALOGE_IF(
- !status,
- "BufferHubChannel::Hangup: failed to signal hangup channel_id=%d: %s",
- channel_id_, status.GetErrorMessage().c_str());
- } else {
- ALOGD_IF(TRACE, "BufferHubChannel::Hangup: detached buffer.");
- }
+ const auto status = service_->ModifyChannelEvents(channel_id_, 0, POLLHUP);
+ ALOGE_IF(
+ !status,
+ "BufferHubChannel::Hangup: failed to signal hangup channel_id=%d: %s",
+ channel_id_, status.GetErrorMessage().c_str());
}
} // namespace dvr