class IO

def close_on_exec!
	fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
end

def close_on_exec!
end

io.writev(["hello ", "world", "\n"])

and whatever else is necessary.
data is written before returning, by performing multiple writev() calls
Unlike the raw writev() system call, this method ensures that all given

way to perform zero-copy I/O.
in order to send the data in a single system call. Thus, #writev is a great
does not require one to concatenate all those strings into a single buffer
descriptor using the +writev()+ system call. Unlike IO#write, this method
Writes all of the strings in the +components+ array into the given file

def writev(components)
	return PhusionPassenger::NativeSupport.writev(fileno, components)
end

io.writev2(["hello ", "world", "\n"], ["another ", "message\n"])

Like #writev, but accepts two arrays. The data is written in the given order.

def writev2(components, components2)
	return PhusionPassenger::NativeSupport.writev2(fileno,
		components, components2)
end

["yet ", "another ", "one", "\n"])
["another ", "message\n"],
io.writev3(["hello ", "world", "\n"],

Like #writev, but accepts three arrays. The data is written in the given order.

def writev3(components, components2, components3)
	return PhusionPassenger::NativeSupport.writev3(fileno,
		components, components2, components3)
end