getpid() or something similar
22 May 2003 12:05:46 +0200
Simon Marlow writes:
> Even using a ProcessID doesn't guarnatee uniqueness [...]
Why not? If I use the file only temporarily (it is gone once the
process terminates), something like /tmp/foo.<pid> will be unique, for
all I can tell.
> The right way to do this is to try to open it for writing, and try
> a different name if the open fails.
Unfortunately, this approach features a race condition because POSIX
has no notion of mandatory file locking. I'd really rather avoid this,
if I can.
Is there no other way? And one that works across different compilers?