From: Nobuyoshi Nakada <nobu@...>
Date: 2009-03-16T13:49:59+09:00
Subject: Re: execle ruby process from C ?

Hi,

At Mon, 16 Mar 2009 12:59:51 +0900,
Michael Linfield wrote in [ruby-talk:331241]:
> > The second string is concatenated at compile time into
> > "/usr/bin/ruby test.rb", so you execute ruby with only that one
> > argument, which is counted as the program name.  Therefore ruby
> > waits script from stdin.
> 
> The HTTP server shouldn't be waiting for stdin because test.rb never 
> calls for it.

Correct, but OP's code doesn't any arguments to /usr/bin/ruby.
So ruby expects that the script will be given from stdin.

That is, I meant a bug about string literal concatenation.  It
should be:

  if(execle("/usr/bin/ruby", "/usr/bin/ruby", "test.rb", NULL, NULL) == -1)

Note that a comma between "/usr/bin/ruby" and "test.rb", and
stripping a leading space from " test.rb", also.

-- 
Nobu Nakada