/usr/include/capnp/serialize-packed.h is in libcapnp-dev 0.6.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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// Licensed under the MIT License:
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#ifndef CAPNP_SERIALIZE_PACKED_H_
#define CAPNP_SERIALIZE_PACKED_H_
#if defined(__GNUC__) && !defined(CAPNP_HEADER_WARNINGS)
#pragma GCC system_header
#endif
#include "serialize.h"
namespace capnp {
namespace _ { // private
class PackedInputStream: public kj::InputStream {
// An input stream that unpacks packed data with a picky constraint: The caller must read data
// in the exact same size and sequence as the data was written to PackedOutputStream.
public:
explicit PackedInputStream(kj::BufferedInputStream& inner);
KJ_DISALLOW_COPY(PackedInputStream);
~PackedInputStream() noexcept(false);
// implements InputStream ------------------------------------------
size_t tryRead(void* buffer, size_t minBytes, size_t maxBytes) override;
void skip(size_t bytes) override;
private:
kj::BufferedInputStream& inner;
};
class PackedOutputStream: public kj::OutputStream {
public:
explicit PackedOutputStream(kj::BufferedOutputStream& inner);
KJ_DISALLOW_COPY(PackedOutputStream);
~PackedOutputStream() noexcept(false);
// implements OutputStream -----------------------------------------
void write(const void* buffer, size_t bytes) override;
private:
kj::BufferedOutputStream& inner;
};
} // namespace _ (private)
class PackedMessageReader: private _::PackedInputStream, public InputStreamMessageReader {
public:
PackedMessageReader(kj::BufferedInputStream& inputStream, ReaderOptions options = ReaderOptions(),
kj::ArrayPtr<word> scratchSpace = nullptr);
KJ_DISALLOW_COPY(PackedMessageReader);
~PackedMessageReader() noexcept(false);
};
class PackedFdMessageReader: private kj::FdInputStream, private kj::BufferedInputStreamWrapper,
public PackedMessageReader {
public:
PackedFdMessageReader(int fd, ReaderOptions options = ReaderOptions(),
kj::ArrayPtr<word> scratchSpace = nullptr);
// Read message from a file descriptor, without taking ownership of the descriptor.
// Note that if you want to reuse the descriptor after the reader is destroyed, you'll need to
// seek it, since otherwise the position is unspecified.
PackedFdMessageReader(kj::AutoCloseFd fd, ReaderOptions options = ReaderOptions(),
kj::ArrayPtr<word> scratchSpace = nullptr);
// Read a message from a file descriptor, taking ownership of the descriptor.
KJ_DISALLOW_COPY(PackedFdMessageReader);
~PackedFdMessageReader() noexcept(false);
};
void writePackedMessage(kj::BufferedOutputStream& output, MessageBuilder& builder);
void writePackedMessage(kj::BufferedOutputStream& output,
kj::ArrayPtr<const kj::ArrayPtr<const word>> segments);
// Write a packed message to a buffered output stream.
void writePackedMessage(kj::OutputStream& output, MessageBuilder& builder);
void writePackedMessage(kj::OutputStream& output,
kj::ArrayPtr<const kj::ArrayPtr<const word>> segments);
// Write a packed message to an unbuffered output stream. If you intend to write multiple messages
// in succession, consider wrapping your output in a buffered stream in order to reduce system
// call overhead.
void writePackedMessageToFd(int fd, MessageBuilder& builder);
void writePackedMessageToFd(int fd, kj::ArrayPtr<const kj::ArrayPtr<const word>> segments);
// Write a single packed message to the file descriptor.
size_t computeUnpackedSizeInWords(kj::ArrayPtr<const byte> packedBytes);
// Computes the number of words to which the given packed bytes will unpack. Not intended for use
// in performance-sensitive situations.
// =======================================================================================
// inline stuff
inline void writePackedMessage(kj::BufferedOutputStream& output, MessageBuilder& builder) {
writePackedMessage(output, builder.getSegmentsForOutput());
}
inline void writePackedMessage(kj::OutputStream& output, MessageBuilder& builder) {
writePackedMessage(output, builder.getSegmentsForOutput());
}
inline void writePackedMessageToFd(int fd, MessageBuilder& builder) {
writePackedMessageToFd(fd, builder.getSegmentsForOutput());
}
} // namespace capnp
#endif // CAPNP_SERIALIZE_PACKED_H_
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