[PATCH 2 of 2] chg: forward user-defined signals

Augie Fackler raf at durin42.com
Wed Mar 8 17:37:21 EST 2017


On Wed, Mar 08, 2017 at 01:47:49PM -0800, Jun Wu wrote:
> # HG changeset patch
> # User Jun Wu <quark at fb.com>
> # Date 1489009586 28800
> #      Wed Mar 08 13:46:26 2017 -0800
> # Node ID 574c38eff4205523a7b30e4b9d5b39e9c9d93a42
> # Parent  26c57e0bc4b0d3c78fc0ddf9701d418d70fa0013
> # Available At https://bitbucket.org/quark-zju/hg-draft
> #              hg pull https://bitbucket.org/quark-zju/hg-draft -r 574c38eff420
> chg: forward user-defined signals

These are queued, thanks.

>
> SIGUSR1 and SIGUSR2 are reserved for user-defined behaviors. They may be
> redefined by an hg extension [1], but cannot be easily redefined for chg.
> Since the default behavior (kill) is not that useful for chg, let's forward
> them to hg, hoping it got redefined there and could be more useful.
>
> [1] https://bitbucket.org/facebook/hg-experimental/commits/e7c883a465
>
> diff --git a/contrib/chg/procutil.c b/contrib/chg/procutil.c
> --- a/contrib/chg/procutil.c
> +++ b/contrib/chg/procutil.c
> @@ -116,4 +116,9 @@ void setupsignalhandler(pid_t pid, pid_t
>       if (sigaction(SIGWINCH, &sa, NULL) < 0)
>               goto error;
> +	/* forward user-defined signals */
> +	if (sigaction(SIGUSR1, &sa, NULL) < 0)
> +		goto error;
> +	if (sigaction(SIGUSR2, &sa, NULL) < 0)
> +		goto error;
>       /* propagate job control requests to worker */
>       sa.sa_handler = forwardsignal;
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