- [X] Commit message has the format required by CONTRIBUTING guide - [X] Commits are split per component (core, individual modules, libs, utils, ...) - [X] Each component has a single commit (if not, squash them into one commit) - [X] No commits to README files for modules (changes must be done to docbook files in `doc/` subfolder, the README file is autogenerated)

#### Type Of Change - [ ] Small bug fix (non-breaking change which fixes an issue) - [X] New feature (non-breaking change which adds new functionality) - [ ] Breaking change (fix or feature that would change existing functionality)

#### Checklist: <!-- Go over all points below, and after creating the PR, tick the checkboxes that apply --> - [ ] PR should be backported to stable branches - [X] Tested changes locally - [ ] Related to issue #XXXX (replace XXXX with an open issue number)

#### Description Introduce utility functions that run module functions in a thread —- primary use case is to init libssl in a thread. Also to avoid a lot of duplicate pthread_XXXX code.

Does not affect core as it is just a header file, however it could be put into core or a utility object.

This infra is applied to a few modules to see the code savings.

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/3736

-- Commit Summary --

* core: add infrastructure to run functions in threads * db_unixodbc: use core/rthreads.h * db_mysql: use core/rthreads.h * db_postgres: use core/rthreads.h * outbound: use core/rthreads.h

-- File Changes --

A src/core/rthreads.h (77) M src/modules/db_mysql/km_dbase.c (10) M src/modules/db_postgres/km_dbase.c (32) M src/modules/db_unixodbc/dbase.c (11) M src/modules/outbound/outbound_mod.c (13)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/3736.patch https://github.com/kamailio/kamailio/pull/3736.diff