mirror of
https://github.com/kidfromjupiter/nearby.git
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73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
// Copyright 2024 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "internal/platform/blocking_queue_stream.h"
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#include <cstdint>
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#include "internal/platform/byte_array.h"
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#include "internal/platform/exception.h"
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#include "internal/platform/feature_flags.h"
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#include "internal/platform/logging.h"
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namespace nearby {
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BlockingQueueStream::BlockingQueueStream() {
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NEARBY_LOGS(INFO) << "Create a BlockingQueueStream with size "
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<< FeatureFlags::GetInstance()
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.GetFlags()
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.blocking_queue_stream_queue_capacity;
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}
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ExceptionOr<ByteArray> BlockingQueueStream::Read(std::int64_t size) {
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if (is_closed_) {
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NEARBY_LOGS(INFO)
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<< "Failed to read BlockingQueueStream because it was closed.";
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return ExceptionOr<ByteArray>(Exception::kInterrupted);
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}
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NEARBY_LOGS(INFO) << "BlockingQueueStream read " << size << " bytes";
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return ExceptionOr<ByteArray>(blocking_queue_.Take());
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}
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void BlockingQueueStream::Write(const ByteArray& bytes) {
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if (is_closed_) {
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NEARBY_LOGS(INFO)
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<< "Failed to write BlockingQueueStream because it was closed.";
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return;
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}
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is_writing_ = true;
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blocking_queue_.Put(bytes);
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is_writing_ = false;
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NEARBY_LOGS(VERBOSE) << "BlockingQueueStream wrote " << bytes.size()
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<< " bytes";
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}
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Exception BlockingQueueStream::Close() {
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if (is_closed_) {
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NEARBY_LOGS(INFO) << "InputBlockingQueueStream has already been closed.";
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return {Exception::kSuccess};
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}
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if (is_writing_) {
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NEARBY_LOGS(INFO)
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<< "BlockingQueueStream is waiting for writing, read first to unblock";
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blocking_queue_.TryTake();
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}
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blocking_queue_.TryPut(queue_end_);
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is_closed_ = true;
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NEARBY_LOGS(INFO) << "InputBlockingQueueStream is closed.";
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return {Exception::kSuccess};
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}
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} // namespace nearby
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