Under high load, the value returned by `shm_available()` can be total garbage, because it is not multiprocess safe. In the tls module, it makes the tests against the `low_mem_thresholdX` limits randomly return false positives, with errors such as: ``` ERROR: tls [tls_server.c:273]: tls_fix_connection(): tls: ssl bug #1491 workaround: not enough memory for safe operation: 88 ``` although there is plenty of free shm memory.

This patch solves the issue by adding a safe version of the function. You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/126

-- Commit Summary --

* mem: add a multiprocess-safe shm_available() * tls: use multiprocess-safe shm_available()

-- File Changes --

M mem/shm_mem.c (8) M mem/shm_mem.h (5) M modules/tls/tls_server.c (4)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/126.patch https://github.com/kamailio/kamailio/pull/126.diff

--- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/pull/126