Pre-Submission Checklist

Commit message has the format required by CONTRIBUTING guide
Commits are split per component (core, individual modules, libs, utils, ...)
Each component has a single commit (if not, squash them into one commit)
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)
New feature (non-breaking change which adds new functionality)
Breaking change (fix or feature that would change existing functionality)

Checklist:

PR should be backported to stable branches
Tested changes locally
Related to issue #XXXX (replace XXXX with an open issue number)

Description

Implement script reloading by copying the method used in app_lua: the version of the script is incremented by RPC.

For each worker, the next time it handles a method, python_exec.c:apy_exec()
will check for a newer version and reload, if necessary.

Set a lock so the script reload only occurs at depth 0 (in the unlikely case
that apy_exec() is called recursively).

This is not thread-safe as we are using a process-wide lock: don't call back
into apy_exec() from a Python C extension that uses threads.

For Pythonistas, we are reloading the module, not reinitializing the interpreter.
Standard caveats about reloading modules apply. E.g, references in the old module
that are not redefined in the newer module remain.

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

https://github.com/kamailio/kamailio/pull/1456

Commit Summary

app_python3: implement script reloading

File Changes

M src/modules/app_python3/app_python_mod.c (220)
M src/modules/app_python3/app_python_mod.h (2)
M src/modules/app_python3/apy_kemi.c (47)
M src/modules/app_python3/doc/app_python3_admin.xml (14)
M src/modules/app_python3/python_exec.c (98)

Patch Links:

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