/usr/include/zmqpp/message.hpp is in libzmqpp-dev 3.2.0-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* \file
*
* \date 9 Aug 2011
* \author Ben Gray (\@benjamg)
*/
#ifndef ZMQPP_MESSAGE_HPP_
#define ZMQPP_MESSAGE_HPP_
#include <functional>
#include <memory>
#include <string>
#include <unordered_map>
#include <vector>
#include <zmq.h>
#include "compatibility.hpp"
namespace zmqpp
{
struct zmq_msg_wrapper;
/*!
* \brief a zmq message with optional multipart support
*
* A zmq message is made up of one or more parts which are sent together to
* the target endpoints. zmq guarantees either the whole message or none
* of the message will be delivered.
*/
class message
{
public:
/*!
* \brief callback to release user allocated data.
*
* The release function will be called on any void* moved part.
* It must be thread safe to the extent that the callback may occur on
* one of the context threads.
*
* The function called will be passed a single variable which is the
* pointer to the memory allocated.
*/
typedef std::function<void (void*)> release_function;
message();
~message();
size_t parts() const;
size_t size(size_t const& part) const;
std::string get(size_t const& part) const;
void get(int8_t& integer, size_t const& part) const;
void get(int16_t& integer, size_t const& part) const;
void get(int32_t& integer, size_t const& part) const;
void get(int64_t& integer, size_t const& part) const;
void get(uint8_t& unsigned_integer, size_t const& part) const;
void get(uint16_t& unsigned_integer, size_t const& part) const;
void get(uint32_t& unsigned_integer, size_t const& part) const;
void get(uint64_t& unsigned_integer, size_t const& part) const;
void get(float& floating_point, size_t const& part) const;
void get(double& double_precision, size_t const& part) const;
void get(bool& boolean, size_t const& part) const;
void get(std::string& string, size_t const& part) const;
// Warn: If a pointer type is requested the message (well zmq) still 'owns'
// the data and will release it when the message object is freed.
template<typename Type>
Type get(size_t const& part)
{
Type value;
get(value, part);
return value;
}
// Raw get data operations, useful with data structures more than anything else
// Warn: The message (well zmq) still 'owns' the data and will release it
// when the message object is freed.
template<typename Type>
void get(Type*& value, size_t const& part) const
{
value = static_cast<Type*>(raw_data(part));
}
// Warn: The message (well zmq) still 'owns' the data and will release it
// when the message object is freed.
template<typename Type>
void get(Type** value, size_t const& part) const
{
*value = static_cast<Type*>(raw_data(part));
}
// Move operators will take ownership of message parts without copying
void move(void* part, size_t& size, release_function const& release);
// Raw move data operation, useful with data structures more than anything else
template<typename Object>
void move(Object *part)
{
move(part, sizeof(Object), &deleter_callback<Object>);
}
// Copy operators will take copies of any data
void add(void const* part, size_t const& size);
template<typename Type>
void add(Type const& part)
{
*this << part;
}
// Stream reader style
void reset_read_cursor();
template<typename Type>
message& operator>>(Type& value)
{
get(value, _read_cursor++);
return *this;
}
// Stream writer style - these all use copy styles
message& operator<<(int8_t const& integer);
message& operator<<(int16_t const& integer);
message& operator<<(int32_t const& integer);
message& operator<<(int64_t const& integer);
message& operator<<(uint8_t const& unsigned_integer);
message& operator<<(uint16_t const& unsigned_integer);
message& operator<<(uint32_t const& unsigned_integer);
message& operator<<(uint64_t const& unsigned_integer);
message& operator<<(float const& floating_point);
message& operator<<(double const& double_precision);
message& operator<<(bool const& boolean);
message& operator<<(char const* c_string);
message& operator<<(std::string const& string);
// Move supporting
message(message&& source) noexcept;
message& operator=(message&& source) noexcept;
// Copy support
message copy();
void copy(message& source);
// Used for internal tracking
void sent(size_t const& part);
// Access to raw zmq details
void const* raw_data(size_t const& part = 0) const;
zmq_msg_t& raw_msg(size_t const& part = 0);
zmq_msg_t& raw_new_msg();
private:
typedef std::vector<zmq_msg_wrapper> parts_type;
parts_type _parts;
size_t _read_cursor;
// Disable implicit copy support, code must request a copy to clone
message(message const&) noexcept ZMQPP_EXPLICITLY_DELETED;
message& operator=(message const&) noexcept ZMQPP_EXPLICITLY_DELETED;
static void release_callback(void* data, void* hint);
template<typename Object>
static void deleter_callback(void* data)
{
delete static_cast<Object*>(data);
}
};
}
#endif /* ZMQPP_MESSAGE_HPP_ */
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