Add SA_RESETHAND (aka SA_ONESHOT) support.
Requested by: John Meacham
> module Main where
> import System.Posix.Signals
> main = do
> installHandler sigUSR1 (Catch (print "usr1")) Nothing
> installHandler sigUSR2 (CatchOnce (print "usr2")) Nothing
> _ <- getLine
> return ()
/* -----------------------------------------------------------------------------
/* -----------------------------------------------------------------------------
- * $Id: Signals.h,v 1.1 2002/09/06 14:34:14 simonmar Exp $
+ * $Id: Signals.h,v 1.2 2002/12/05 14:20:55 stolz Exp $
*
* (c) The GHC Team, 1998-2002
*
*
* (c) The GHC Team, 1998-2002
*
#define STG_SIG_IGN (-2)
#define STG_SIG_ERR (-3)
#define STG_SIG_HAN (-4)
#define STG_SIG_IGN (-2)
#define STG_SIG_ERR (-3)
#define STG_SIG_HAN (-4)
+#define STG_SIG_RST (-5)
extern int stg_sig_install (int, int, StgStablePtr *, void *);
extern int stg_sig_install (int, int, StgStablePtr *, void *);
/* -----------------------------------------------------------------------------
/* -----------------------------------------------------------------------------
- * $Id: Signals.c,v 1.29 2002/09/17 12:11:45 simonmar Exp $
+ * $Id: Signals.c,v 1.30 2002/12/05 14:20:55 stolz Exp $
*
* (c) The GHC Team, 1998-1999
*
*
* (c) The GHC Team, 1998-1999
*
handlers[sig] = (StgInt)*handler;
sigaddset(&userSignals, sig);
action.sa_handler = generic_handler;
handlers[sig] = (StgInt)*handler;
sigaddset(&userSignals, sig);
action.sa_handler = generic_handler;
+ if (spi == STG_SIG_RST) {
+ action.sa_flags = SA_RESETHAND;
+ }
n_haskell_handlers++;
break;
n_haskell_handlers++;
break;
else
sigemptyset(&action.sa_mask);
else
sigemptyset(&action.sa_mask);
- action.sa_flags = sig == SIGCHLD && nocldstop ? SA_NOCLDSTOP : 0;
+ action.sa_flags |= sig == SIGCHLD && nocldstop ? SA_NOCLDSTOP : 0;
if (sigaction(sig, &action, NULL) ||
sigprocmask(SIG_SETMASK, &osignals, NULL))
if (sigaction(sig, &action, NULL) ||
sigprocmask(SIG_SETMASK, &osignals, NULL))