[webkit-dev] File::Spec->tmpdir() on Leopard and Snow Leopard bots
ddkilzer at webkit.org
Fri Jan 8 07:49:00 PST 2010
On Fri, January 8, 2010 at 12:39:41 AM, Andras Becsi wrote:
> in the process of making it possible to run more than one instance of
> run-webkit-tests at the same time
> (https://bugs.webkit.org/show_bug.cgi?id=33153), I'm trying to make the handling
> of running httpd processes more platform independent.
> My tries failed only on the Leopard bots. Unfortunately I have no access to a
> Leopard machine, so I had to guess, but now I have a strong supposition why the
> new script fails.
> The Leopard bots (Leopard and Snow Leopard) have set something like this:
> TMPDIR=/var/folders/FF/FFsVLEwYHre8vU9Sax877k+++TI/-Tmp-/ shown in the bot logs
> My assumption is, that calling File::Spec->tmpdir() in perl returns this path,
> not /tmp as expected, that is why there is no PID file where the script expects
> it to be (httpd.conf sets it to /tmp/WebKit).
> Is there any particular reason for setting a non-POSIX standard TMPDIR on these
> machines, especially because Tiger does not set this and thus has no problems
> with File::Spec->tmpdir()? Or am I wrong with my assumption?
On Leopard and newer, the tmp directory under /var/folders is a per-user tmp directory (IIRC), which the Perl module apparently prefers over the shared tmp directory at /tmp.
If you read the man page for File::Spec, tmpdir() simply returns the first directory in a list, and its implementation is platform-specific. It sounds like this method should not be used if there is code that expects the same directory to be returned on every platform.
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