From 12528dccd3a1c7043fb14343c0830345f5015fbf Mon Sep 17 00:00:00 2001 From: "Danilo M." Date: Mon, 29 Jun 2026 11:07:41 +0200 Subject: Fix duplicate daemon spawn on login via atomic PID claim Replace the check-then-write singleton guard in run_loop with an atomic noclobber PID-file claim. The old guard read the PID file then wrote it in two steps; two starts racing (e.g. a fast double-login) could both read a stale PID and spawn duplicate daemons. With noclobber only the first writer creates the file; the loser aborts, and a stale PID from a previous session is taken over rather than duplicated. Also document install (~/bin copy) and autostart in CLAUDE.md. Co-Authored-By: Claude Opus 4.8 --- CLAUDE.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'CLAUDE.md') diff --git a/CLAUDE.md b/CLAUDE.md index f47ab25..fd8523d 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -6,6 +6,23 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co `breaktimer` is a Bash break-reminder daemon for a Linux/Wayland desktop (dunst + pipewire + Waybar). No build, no package manager, no tests — it's a single shell script plus Waybar integration files. Comments and notification strings are in Italian; keep that convention when editing. +## Install + +The runtime copy lives at `~/bin/breaktimer.sh` (a plain copy, not a symlink). After editing the repo, install and reload: + +```bash +cp breaktimer.sh ~/bin/breaktimer.sh +~/bin/breaktimer.sh restart +``` + +Autostart is a Hyprland exec in `~/.config/hypr/sections/autostart.lua`: + +```lua +hl.exec_cmd("/home/danix/bin/breaktimer.sh start") +``` + +`start` is idempotent: an atomic `noclobber` PID-file claim in `run_loop` means a second `start` (or a fast double-login) can't spawn a duplicate daemon — the loser aborts. A stale PID file from a previous session is taken over, not duplicated. + ## Running ```bash -- cgit v1.2.3