On Fri, Dec 11, 2020 at 5:10 PM Wendell Hatcher
<wendellhatcher1074@xxxxxxxxx> wrote:
>
> Hi All, quick question. The APR_USE_SHMEM_SHMGET defined option within the shm.c file what does it do exactly and can we set the option to 0 or 1? What would the setting of the option to those values effect?
It's defined (in lib APR) by the ./configure script (autoconf) based
on its availability, and is the default on unix(es) systems (where IPC
SysV shared memories are usually/always implemented).
This can't be defined explicitly (./configure will overwrite it) but
it's possible to select the POSIX semaphores mechanism instead with
"./configure --enable-posix-shm ...", which is usually a good
alternative "suffering" less from system limits than IPC SysV, since
limits are then the filesystem's maximum number of inodes (as opposed
to SysV's kernel.sem=... settings).
Regards;
Yann.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx
For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
|