bgworker-and-extensions
Skill1 starsChanged 6 months agoPostgreSQLView on GitHub
Register a PostgreSQL background worker or layer extension hooks on _PG_init — covers RegisterBackgroundWorker (static at shared_preload_libraries time) vs RegisterDynamicBackgroundWorker (runtime), the BackgroundWorker struct (bgw_flags BGWORKER_SHMEM_ACCESS / BGWORKER_BACKEND_DATABASE_CONNECTION, bgw_start_time, bgw_restart_time, bgw_main_arg, bgw_notify_pid), BackgroundWorkerInitializeConnection, the signal handler skeleton (SignalHandlerForConfigReload + die), the WaitLatch idiom with WL_EXIT_ON_PM_DEATH, and the GetBackgroundWorkerPid / WaitForBackgroundWorkerStartup / TerminateBackgroundWorker lifecycle calls. Use whenever a PG patch or extension registers a bgworker, writes a worker_main function, debugs a worker that fails to start or restart, layers ProcessUtility_hook / planner_hook / ExecutorStart_hook on _PG_init, or coordinates bgw_notify_pid signaling. Skip for Celery / Sidekiq / RQ / Resque / Kafka-consumer worker pools, AWS Lambda / Cloud Run background jobs, Cron / systemd timers, OS-level daemons, and Kubernetes Jobs / CronJobs.
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2 rules. About 0 are common, 0 are distinctive, and 2 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈0
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This author's own choices. Worth a look.
2
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Licensed with conditions — read it at the source. We count its rules but don't quote them. Read them on GitHub.
≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
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