mirror of
https://github.com/kuhyx/diet-guard.git
synced 2026-11-10 20:27:11 +01:00
Krzysztof kuhy Rudnicki
e8f0ecaae1
Sixth batch of the 250-line sweep. All six gate sources named for this batch are now under cap, plus _gate_layout_probe.py, which this batch's import rewiring pulled into the changeset (over-cap count 38 -> 31). _gatelock_ui.py 477 -> 174 (palette/leaf-helper hub) _gate_layout_probe.py 346 -> 196 _gatelock_groups.py 308 -> 137 _gatelock_calendar_ui 295 -> 77 _gatelock_calendar.py 286 -> 210 _gatelock.py 263 -> 238 _gatelock_mealflow.py 259 -> 207 New siblings: _gatelock_fields (input widgets), _gatelock_layout (assembly), _gatelock_widgetgroups (per-widget mirroring), _gatelock_calendar_types (bundles/palette), _gatelock_calendar_widgets (History builders), _gatelock_dashboard and _gatelock_budgetedit (mixins), _gatelock_lockfile (the stdlib-only flock), _gate_focus_probe and _gate_measurement. The load-bearing part is the test seam, not the line counts. `_gate_fixtures._GATE_TK_MODULES` patches `tk` on a hand-listed tuple, and that list fails OPEN: a widget builder split into a new sibling that nobody adds to it builds *real* Tk widgets against fake parents. Neither existing detector sees that -- check_patch_targets.py only validates paths that still resolve, and the ~8s runtime only catches network calls. It bit twice during this split (real StringVars from make_calendar_vars returned MagicMocks instead of the asserted text), so test_gate_tk_modules.py now asserts the invariant directly: every module binding `tk` is in the patch set or named in _NO_WIDGETS with a reason. It caught a pre-existing gap too -- _gatelock_support was never in the set. Same fail-open shape drove two other choices: `escape_tab_trap` is a call-time indirection so the keyboard test's patch of `_escape_text_tab_trap` still bites, and the flock pair moved with its conftest patch target updated in the same edit (that one fails closed). build_layout is imported from _gatelock_layout directly rather than re-exported lazily, which avoids both a cycle and an import-outside-toplevel suppression. Verified: 703 Python tests / 100% branch coverage, the 5 layout-fits tests under xvfb, 555 Flutter tests (unchanged), flutter analyze clean, check_patch_targets 0, `sync` 0 (403 entries), pre-commit clean, and `gate --demo` renders both tabs with live dashboard data. ~/.local/share/diet_guard byte-identical across the batch (gate timer paused, restored after). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RA9ynjqXPnexRQnR5oAuCC
50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
"""Single-instance ``flock`` for the meal gate.
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Split out of :mod:`._gatelock` to keep every gate module under the repo's
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250-line limit. Deliberately the *stdlib-only* half of the gate: no ``tkinter``
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import, so this module never needs to appear in the test suite's
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``_GATE_TK_MODULES`` fake-tk patch set.
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"""
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from __future__ import annotations
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import contextlib
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import fcntl
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from typing import TYPE_CHECKING
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from diet_guard._constants import GATE_LOCK_FILE
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if TYPE_CHECKING:
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from typing import TextIO
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__all__ = [
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"GATE_LOCK_FILE",
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"acquire_gate_lock",
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"release_gate_lock",
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]
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def acquire_gate_lock() -> TextIO | None:
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"""Acquire the gate's single-instance ``flock``.
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Returns:
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An open file handle that must be kept alive for the gate's lifetime
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(closing it releases the lock), or None if another gate already holds
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it -- in which case the caller must not open a second window.
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"""
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GATE_LOCK_FILE.parent.mkdir(parents=True, exist_ok=True)
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handle = GATE_LOCK_FILE.open("w", encoding="utf-8")
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try:
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fcntl.flock(handle.fileno(), fcntl.LOCK_EX | fcntl.LOCK_NB)
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except OSError:
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handle.close()
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return None
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return handle
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def release_gate_lock(handle: TextIO) -> None:
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"""Release the single-instance lock and close its handle."""
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with contextlib.suppress(OSError):
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fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
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handle.close()
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