On Fri, 2003-05-30 at 17:46, Arshavir Grigorian wrote: > Is it possible that calling undef on a global hash in one Apache process > not reset the value/contents of the same hash > in other Apache processes?
I don't quite understand the wording of your question, but the short answer is that nothing is truly shared between processes. Copy-on-write provides some optimization of memory usage at the OS level, but it does not affect actual sharing. If you write to a variable in one process, no other process will be affected, even if it has the same global variable. > I am using Apache::Status to examine the content of a specific hash and > depending on which Apache process handles my > request, I get a different value for a specific key in the hash. Right, modifications to the hash are not shared. > On a related note, does running several virtual hosts of off the same > source tree mean that all global variables are shared > among all the vhosts? Virtual hosts are irrelevant. All that matters is if the code is running in the same process. - Perrin
