The openssl library uses scheme_register_process_global to make sure it
initializes the openssl foreign library only once. See the end of
openssl/mzssl.rkt.
Ryan
On 01/28/2016 02:33 PM, Leif Andersen wrote:
Since a lot of people were at POPL last week, I think it's worth
pinging this list again.
Does anyone have a solution to the problem stated in the previous email?
Namely, is there a way to either create a top-level variable that
persists until the VM dies, get a list of all dynamically linked
libraries, or require a module implemented in C who's module name
differs from it's file name?
Thank you.
Thank you.
~Leif Andersen
On Tue, Jan 19, 2016 at 3:20 PM, John Clements
<cleme...@brinckerhoff.org> wrote:
On Jan 19, 2016, at 11:14 AM, Leif Andersen <l...@leifandersen.net> wrote:
Is it possible to either create a variable that persists until the
Racket VM shuts down or get a list of all of the libraries that are
shared libraries that are currently being linked against the racket
vm?
I can’t help you. But! This reminds me of a closely related problem that occurs
with the `rsound` library.
The rsound library contains shared libraries. Running rsound programs performs
dynamic linking against these libraries.
When students try to upgrade the package, terrible things happen; the update
tries to replace the file, and the OS won’t allow it, because the dynamic
library is still linked. This leaves things in a half-installed state from
which (IIRC) it’s difficult to recover. If there were a way to enumerate
currently-linked shared libraries, the update could simply refuse to run, which
would be a substantial improvement.
CAVEAT: I haven’t tested this in the last two years. Please forgive me if this
problem has already been resolved.
Thanks!
John
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