ClickHouse/libs/libcommon/include/common/Pipe.h
Nikita Lapkov 9d540abc84 refactor
2019-07-10 20:47:39 +00:00

35 lines
605 B
C++

#pragma once
#include <unistd.h>
#include <fcntl.h>
#include <stdexcept>
/**
* Struct containing a pipe with lazy initialization.
* Use `open` and `close` methods to manipulate pipe and `fds_rw` field to access
* pipe's file descriptors.
*/
struct LazyPipe
{
int fds_rw[2] = {-1, -1};
LazyPipe() = default;
void open();
void close();
virtual ~LazyPipe() = default;
};
/**
* Struct which opens new pipe on creation and closes it on destruction.
* Use `fds_rw` field to access pipe's file descriptors.
*/
struct Pipe : public LazyPipe
{
Pipe();
~Pipe();
};