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List:       boost-users
Subject:    [Boost-users] [process] distinguish normal exit from termination by signal - complete
From:       Oliver Kowalke via Boost-users <boost-users () lists ! boost ! org>
Date:       2018-12-17 14:43:33
Message-ID: CA+wfc1-VTVfoVN18eb463uv0o3QeJ6MSjYBZmO4BPcALismsSQ () mail ! gmail ! com
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Hello,
I'm evaluating boost.process. It seams to me that it is impossible to
distinguish a normal exit from a termination by a signal (for instance
SIGBUS etc.).
child::exit_code() calls eval_exit_status() that expands on POSIX to:

if (WIFEXITED(code)) {
   return  WEXITSTATUS(code);
} else if (WIFSIGNALED(code)) {
   return WTERMSIG(code);
} else {
   return code;
}

With the code above it is impossible if the returned exit_code is a
`exit-code` or the number of a signal.
Or do I miss something?

regards,
Oliver

[Attachment #5 (text/html)]

<div dir="ltr"><div>Hello,</div><div>I&#39;m evaluating boost.process. It seams to me \
that  it is impossible to distinguish a normal exit from a termination by a 
signal (for instance <span class="" style="" id=":2sn.1" tabindex="-1">SIGBUS</span> \
etc.).</div><div>child::exit_code() calls <span class="" style="" id=":2sn.2" \
tabindex="-1">eval</span>_exit_status() that expands on <span class="" style="" \
id=":2sn.3" tabindex="-1">POSIX</span> to:</div><div><br></div><div>if (<span \
class="" style="" id=":2sn.4" tabindex="-1">WIFEXITED</span>(code)) {</div><div>     \
return   <span class="" style="" id=":2sn.5" \
tabindex="-1">WEXITSTATUS</span>(code);</div><div> } else if (<span class="" style="" \
id=":2sn.6" tabindex="-1">WIFSIGNALED</span>(code)) {</div><div>     return <span \
class="" style="" id=":2sn.7" tabindex="-1">WTERMSIG</span>(code);</div><div>} else \
{</div><div>     return code; <br></div><div>}</div><div><br></div><div>With the code \
above it is impossible if the returned exit_code is a `exit-code` or the number of a \
signal.</div><div>Or do I miss \
something?</div><div><br></div><div>regards,</div><div>Oliver<br></div></div>



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