tractor/tractor/spawn
Gud Boi 3ceb493090 Extract fork primitives into `_main_thread_forkserver`
Move the truly-generic main-interp-worker-thread fork primitives
(`fork_from_worker_thread`, `_close_inherited_fds`, `_ForkedProc`,
`wait_child`, `_format_child_exit`) out of `_subint_forkserver.py` into
a sibling `_main_thread_forkserver.py` module so the primitive layer is
honestly named — none of these helpers touch a subint, they just fork
from a main-interp worker thread.

`_subint_forkserver.py` keeps its public surface intact via re-export so
any existing `from tractor.spawn._subint_forkserver import ...` callsite
still resolves.

Net: zero behavior change, preps the way for the upcoming spawn-method
key split where `main_thread_forkserver` ships as the working backend
and `subint_forkserver` becomes reserved for the future
subint-isolated-child variant (gated on jcrist/msgspec#1026).

(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code

(cherry picked from commit 99dade0fb3)
2026-08-12 20:43:18 -04:00
..
__init__.py Restore fn-arg `_runtime_vars` in `trio_proc` teardown 2026-04-23 18:30:11 -04:00
_entry.py Tidy `spawn/` subpkg docstrings and imports 2026-04-17 19:03:00 -04:00
_forkserver_override.py Mv core mods to `runtime/`, `spawn/`, `discovery/` subpkgs 2026-04-02 17:59:13 -04:00
_main_thread_forkserver.py Extract fork primitives into `_main_thread_forkserver` 2026-08-12 20:43:18 -04:00
_mp.py Tidy `spawn/` subpkg docstrings and imports 2026-04-17 19:03:00 -04:00
_mp_fixup_main.py Fix typos + typing in `_mp_fixup_main` 2026-04-10 20:58:54 -04:00
_reap.py Add `tractor.spawn._reap.unlink_uds_bind_addrs()` 2026-06-17 17:39:44 -04:00
_spawn.py Wire `subint_forkserver` as first-class backend 2026-08-12 20:43:18 -04:00
_subint.py Log subint bootstrap excs + cancel-leak state 2026-08-12 20:43:18 -04:00
_subint_fork.py Doc `subint_fork` as blocked by CPython post-fork 2026-08-12 20:43:18 -04:00
_subint_forkserver.py Extract fork primitives into `_main_thread_forkserver` 2026-08-12 20:43:18 -04:00
_trio.py Add `tractor.spawn._reap.unlink_uds_bind_addrs()` 2026-06-17 17:39:44 -04:00