sigterm

I've done a ton of research on this, and I'm surprised I haven't found a good answer to this yet anywhere. I'm running a large application on Heroku, and I have certain celery tasks that run for a very long time processing, and at the end of the task save a result. Every time I redeploy on Heroku, it sends SIGTERM (and eventually, SIGKILL) and kills my running worker. I'm trying to find a way for the worker instance to shut itself down gracefully and re-queue itself for processing later so that eventually we can save the required result instead of losing the queued task. I cannot find a way

I am working on an application where I need to detect a system shutdown. However, I have not found any reliable way get a notification on this event. I know that on shutdown, my app will receive a SIGTERM signal followed by a SIGKILL . I want to know if there is any way to query if a SIGTERM is part of a shutdown sequence ? Does any one know if there is a way to query that programmatically (C API)? As far as I know, the system does not provide any other method to query for an impending shutdown. If it does, that would solve my problem as well. I have been trying out runlevels as well, but

This just started happening three weeks or so ago. The content of my website hasn't changed, it's just a phpBB forum using MySQL as a backend. Nothing has changed in well over a year but recently, every two days or so, the server just shuts down and cannot be accessed at all, I have to notify my service provider to physically restart the machine. It seems to be tied to these SIGTERM errors I find in the logs. Problem is I have no idea how to fix these kinds of things or find the root cause as my skills in this area are lacking. Anyone have any ideas what could be going on? Apache/2.2.3 (CentOS

Under POSIX OS there is signal API that allows to send a signal to process to shut it down with kill and you can catch it with sigaction and do what you need; However, Win32 is not POSIX system, so: How can I handle shutdown events that may come, for example from "End Process" in "Task manager"? What is the standard API for sending shutdown signal to Win32 application? I'm not talking about GUI, I'm talking about TCP/IP server that should be nicely shutdown. that does not run like windows service. Christopher You get a WM_QUIT message on your first created thread. When you don't handle that,

I want to capture the Ctrl+C ( SIGINT ) signal sent from the console and print out some partial run totals. Is this possible in Golang? Note: When I first posted the question I was confused about Ctrl+C being SIGTERM instead of SIGINT . Lily Ballard You can use the os/signal package to handle incoming signals. ^C is SIGINT , so you can use this to trap os.Interrupt . c := make(chan os.Signal, 1) signal.Notify(c, os.Interrupt) go func(){ for sig := range c { // sig is a ^C, handle it } }() The manner in which you cause your program to terminate and print information is entirely up to you. This