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<?xml version="1.0" standalone="yes"?>
<programlisting>
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_setup">on_setup</methodname>(*this);
if (<methodname alt="boost::process::extend::posix_executor::error">error</methodname>())
{
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
return <classname alt="boost::process::child">child</classname>();
}
pid = <ulink url="http://pubs.opengroup.org/onlinepubs/009695399/functions/fork.html">fork()</ulink>
<methodname alt="boost::process::extend::handler::on_setup">on_setup</methodname>(*this);
if (pid == -1) //fork error
{
<methodname alt="boost::process::extend::posix_executor::set_error">set_error</methodname>(<functionname alt="boost::process::extend::get_last_error">get_last_error</functionname>());
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_fork_error">on_fork_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
return <classname alt="boost::process::child">child</classname>()
}
else if (pid == 0) //child process
{
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_exec_setup">on_exec_setup</methodname>(*this);
<ulink url="http://pubs.opengroup.org/onlinepubs/009695399/functions/exec.html">execve</ulink>(exe, cmd_line, env);
auto ec = <functionname alt="boost::process::extend::get_last_error">get_last_error</functionname>();
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_exec_error">on_exec_error</methodname>(*this);
<emphasis>unspecified();</emphasis>//here the error is send to the father process interally
<ulink url="http://en.cppreference.com/w/cpp/utility/program/exit">std::exit</ulink>(<ulink url="http://en.cppreference.com/w/c/program/EXIT_status">EXIT_FAILURE</ulink>);
return <classname alt="boost::process::child">child</classname>(); //for C++ compliance
}
<classname alt="boost::process::child">child</classname> c(pid, exit_code);
<emphasis>unspecified();</emphasis>//here, we read the the error from the child process
if (<methodname alt="boost::process::extend::posix_executor::error">error</methodname>())
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
else
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_error">on_success</methodname>(*this);
//now we check again, because a on_success handler might've errored.
if (<methodname alt="boost::process::extend::posix_executor::error">error</methodname>())
{
for (auto & s : seq)
s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
return <classname alt="boost::process::child">child</classname>();
}
else
return c;
</programlisting>
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