Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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Chapter 29. Boost.Process

Klemens David Morgenstern

Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

Table of Contents

Introduction
Concepts
Pipes
Processes
Environment
Tutorial
Starting a process
Launch functions
Error
Synchronous I/O
Asynchronous I/O
Groups
Environment
Design Rationale
Scope
Interface Style
Arguments/Command Style
Extensions
Extensions
Structure
Simple extensions
Handler Types
Asynchronous Functionality
Error handling
Executor Overloading
Frequently Asked Questions
Why does this produce a deadlock?
Why does the pipe not close?
When will the codecvt be used?
Reference
Header <boost/process/args.hpp>
Header <boost/process/async.hpp>
Header <boost/process/async_pipe.hpp>
Header <boost/process/async_system.hpp>
Header <boost/process/child.hpp>
Header <boost/process/cmd.hpp>
Header <boost/process/env.hpp>
Header <boost/process/environment.hpp>
Header <boost/process/error.hpp>
Header <boost/process/exception.hpp>
Header <boost/process/exe.hpp>
Header <boost/process/extend.hpp>
Header <boost/process/group.hpp>
Header <boost/process/io.hpp>
Header <boost/process/locale.hpp>
Header <boost/process/pipe.hpp>
Header <boost/process/posix.hpp>
Header <boost/process/search_path.hpp>
Header <boost/process/shell.hpp>
Header <boost/process/spawn.hpp>
Header <boost/process/start_dir.hpp>
Header <boost/process/system.hpp>
Header <boost/process/windows.hpp>
Acknowledgements

Boost.Process is a library to manage system processes. It can be used to:

  • create child processes
  • setup streams for child processes
  • communicate with child processes through streams (synchronously or asynchronously)
  • wait for processes to exit (synchronously or asynchronously)
  • terminate processes

Here's a simple example of how to start a program with Boost.Process:

#include <boost/process.hpp>

using namespace boost::process;

int main()
{
    ipstream pipe_stream;
    child c("gcc --version", std_out > pipe_stream);

    std::string line;

    while (pipe_stream && std::getline(pipe_stream, line) && !line.empty())
        std::cerr << line << std::endl;

    c.wait();
}

Last revised: August 30, 2017 at 21:54:53 GMT


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