4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews//
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// Automated Testing Framework (atf)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews//
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// Copyright (c) 2008 The NetBSD Foundation, Inc.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// All rights reserved.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews//
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// Redistribution and use in source and binary forms, with or without
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// modification, are permitted provided that the following conditions
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// are met:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// 1. Redistributions of source code must retain the above copyright
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// notice, this list of conditions and the following disclaimer.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// 2. Redistributions in binary form must reproduce the above copyright
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// notice, this list of conditions and the following disclaimer in the
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// documentation and/or other materials provided with the distribution.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews//
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews//
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#if !defined(TOOLS_PROCESS_HPP)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#define TOOLS_PROCESS_HPP
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsextern "C" {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <sys/types.h>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <unistd.h>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews}
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <cerrno>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <cstdlib>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <iostream>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <string>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <vector>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include "auto_array.hpp"
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include "exceptions.hpp"
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include "fs.hpp"
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsnamespace tools {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsnamespace process {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass child;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass status;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// The "argv_array" type.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass argv_array {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews typedef std::vector< std::string > args_vector;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews args_vector m_args;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // TODO: This is immutable, so we should be able to use
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // std::tr1::shared_array instead when it becomes widely available.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // The reason would be to remove all copy constructors and assignment
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // operators from this class.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews auto_array< const char* > m_exec_argv;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void ctor_init_exec_argv(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews typedef args_vector::const_iterator const_iterator;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews typedef args_vector::size_type size_type;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews argv_array(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews argv_array(const char*, ...);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews explicit argv_array(const char* const*);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class C > explicit argv_array(const C&);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews argv_array(const argv_array&);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const char* const* exec_argv(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews size_type size(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const char* operator[](int) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const_iterator begin(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const_iterator end(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews argv_array& operator=(const argv_array&);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewstemplate< class C >
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsargv_array::argv_array(const C& c)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews{
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews for (typename C::const_iterator iter = c.begin(); iter != c.end();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews iter++)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews m_args.push_back(*iter);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews ctor_init_exec_argv();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews}
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// The "stream" types.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass stream_capture {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int m_pipefds[2];
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // Allow access to the getters.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child fork(void (*)(void*), OutStream, ErrStream, void*);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status exec(const tools::fs::path&, const argv_array&,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream&, const ErrStream&, void (*)(void));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void prepare(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int connect_parent(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void connect_child(const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews stream_capture(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews ~stream_capture(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass stream_connect {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int m_src_fd;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int m_tgt_fd;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // Allow access to the getters.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child fork(void (*)(void*), OutStream, ErrStream, void*);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status exec(const tools::fs::path&, const argv_array&,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream&, const ErrStream&, void (*)(void));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void prepare(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int connect_parent(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void connect_child(const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews stream_connect(const int, const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass stream_inherit {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // Allow access to the getters.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child fork(void (*)(void*), OutStream, ErrStream, void*);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status exec(const tools::fs::path&, const argv_array&,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream&, const ErrStream&, void (*)(void));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void prepare(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int connect_parent(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void connect_child(const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews stream_inherit(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass stream_redirect_fd {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int m_fd;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // Allow access to the getters.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child fork(void (*)(void*), OutStream, ErrStream, void*);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status exec(const tools::fs::path&, const argv_array&,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream&, const ErrStream&, void (*)(void));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void prepare(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int connect_parent(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void connect_child(const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews stream_redirect_fd(const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass stream_redirect_path {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const tools::fs::path m_path;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews // Allow access to the getters.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child fork(void (*)(void*), OutStream, ErrStream, void*);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status exec(const tools::fs::path&, const argv_array&,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream&, const ErrStream&, void (*)(void));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void prepare(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int connect_parent(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void connect_child(const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews stream_redirect_path(const tools::fs::path&);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// The "status" type.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass status {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int m_status;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews friend class child;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status exec(const tools::fs::path&, const argv_array&,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream&, const ErrStream&, void (*)(void));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status(int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews ~status(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews bool exited(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int exitstatus(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews bool signaled(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int termsig(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews bool coredump(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// The "child" type.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsclass child {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews pid_t m_pid;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int m_stdout;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int m_stderr;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews bool m_waited;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews template< class OutStream, class ErrStream > friend
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child fork(void (*)(void*), OutStream, ErrStream, void*);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child(const pid_t, const int, const int);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewspublic:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews ~child(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews status wait(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews pid_t pid(void) const;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int stdout_fd(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews int stderr_fd(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// Free functions.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// ------------------------------------------------------------------------
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsnamespace detail {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsvoid flush_streams(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsstruct exec_args {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const tools::fs::path m_prog;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const argv_array& m_argv;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void (*m_prehook)(void);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews};
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsvoid do_exec(void *);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews} // namespace detail
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// TODO: The void* cookie can probably be templatized, thus also allowing
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews// const data structures.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewstemplate< class OutStream, class ErrStream >
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewschild
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsfork(void (*start)(void*), OutStream outsb, ErrStream errsb, void* v)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews{
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews detail::flush_streams();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews outsb.prepare();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews errsb.prepare();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews pid_t pid = ::fork();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews if (pid == -1) {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews throw system_error("tools::process::child::fork",
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews "Failed to fork", errno);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews } else if (pid == 0) {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews try {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews outsb.connect_child(STDOUT_FILENO);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews errsb.connect_child(STDERR_FILENO);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews start(v);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews std::abort();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews } catch (...) {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews std::cerr << "Unhandled error while running subprocess\n";
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews std::exit(EXIT_FAILURE);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews }
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews } else {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const int stdout_fd = outsb.connect_parent();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const int stderr_fd = errsb.connect_parent();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews return child(pid, stdout_fd, stderr_fd);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews }
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews}
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewstemplate< class OutStream, class ErrStream >
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsstatus
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsexec(const tools::fs::path& prog, const argv_array& argv,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream& outsb, const ErrStream& errsb,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews void (*prehook)(void))
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews{
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews struct detail::exec_args ea = { prog, argv, prehook };
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews child c = fork(detail::do_exec, outsb, errsb, &ea);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsagain:
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews try {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews return c.wait();
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews } catch (const system_error& e) {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews if (e.code() == EINTR)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews goto again;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews else
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews throw e;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews }
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews}
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewstemplate< class OutStream, class ErrStream >
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsstatus
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsexec(const tools::fs::path& prog, const argv_array& argv,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews const OutStream& outsb, const ErrStream& errsb)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews{
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews return exec(prog, argv, outsb, errsb, NULL);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews}
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews} // namespace process
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews} // namespace tools
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#endif // !defined(TOOLS_PROCESS_HPP)