mirror of
https://github.com/kidfromjupiter/nearby.git
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Alexey Polyudov
4baa1ce96a
Signed-off-by: Alexey Polyudov <apolyudov@google.com> Change-Id: Ie19e006429b138b3768e97dae971a43fdc5ef8bf
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
// Copyright 2020 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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#ifndef PLATFORM_PIPE_H_
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#define PLATFORM_PIPE_H_
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#include <cstdint>
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#include <deque>
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#include "platform/api/condition_variable.h"
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#include "platform/api/input_stream.h"
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#include "platform/api/lock.h"
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#include "platform/api/output_stream.h"
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#include "platform/byte_array.h"
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#include "platform/exception.h"
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#include "platform/ptr.h"
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namespace location {
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namespace nearby {
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namespace pipe {
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class PipeInputStream;
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class PipeOutputStream;
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} // namespace pipe
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class Pipe {
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public:
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Pipe();
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~Pipe();
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// The returned InputStream is auto-destroyed when no longer referenced.
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static Ptr<InputStream> createInputStream(Ptr<Pipe>);
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// The returned OutputStream is auto-destroyed when no longer referenced.
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static Ptr<OutputStream> createOutputStream(Ptr<Pipe>);
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private:
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//////////////////////////////////////////////////////////////////////////////
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// Everything in this first private: section is only used by PipeInputStream
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// and PipeOutputStream, thus forming the interface presented to those 2
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// classes.
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//////////////////////////////////////////////////////////////////////////////
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friend class pipe::PipeInputStream;
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friend class pipe::PipeOutputStream;
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ExceptionOr<ConstPtr<ByteArray> > read(std::int64_t size);
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Exception::Value write(ConstPtr<ByteArray> data);
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void markInputStreamClosed();
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void markOutputStreamClosed();
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private:
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Exception::Value writeLocked(ConstPtr<ByteArray> data);
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bool eitherStreamClosed() const;
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ScopedPtr<Ptr<Lock> > lock_;
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ScopedPtr<Ptr<ConditionVariable> > cond_;
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typedef std::deque<ConstPtr<ByteArray> > BufferType;
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BufferType buffer_;
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bool input_stream_closed_;
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bool output_stream_closed_;
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bool read_all_chunks_;
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};
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} // namespace nearby
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} // namespace location
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#endif // PLATFORM_PIPE_H_
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