/* -----------------------------------------------------------------------------
- * $Id: Signals.c,v 1.17 2000/04/14 16:47:43 panne Exp $
+ * $Id: Signals.c,v 1.20 2001/07/26 03:24:01 ken Exp $
*
* (c) The GHC Team, 1998-1999
*
*
* ---------------------------------------------------------------------------*/
+#define NON_POSIX_SOURCE
+
#include "Rts.h"
#include "SchedAPI.h"
#include "Schedule.h"
#include "RtsFlags.h"
#include "StablePriv.h"
+#ifdef alpha_TARGET_ARCH
+#include <machine/fpu.h>
+#endif
+
#ifndef mingw32_TARGET_OS
#ifndef PAR
-------------------------------------------------------------------------- */
StgInt
-sig_install(StgInt sig, StgInt spi, StgStablePtr handler, sigset_t *mask)
+stg_sig_install(StgInt sig, StgInt spi, StgStablePtr handler, sigset_t *mask)
{
sigset_t signals;
struct sigaction action;
break;
default:
- barf("sig_install: bad spi");
+ barf("stg_sig_install: bad spi");
}
if (mask != 0)
#else /* PAR */
StgInt
-sig_install(StgInt sig, StgInt spi, StgStablePtr handler, sigset_t *mask)
+stg_sig_install(StgInt sig, StgInt spi, StgStablePtr handler, sigset_t *mask)
{
/* don't fflush(stdout); WORKAROUND bug in Linux glibc */
barf("no signal handling support in a parallel implementation");
* Haskell code may install their own SIGINT handler, which is
* fine, provided they're so kind as to put back the old one
* when they de-install.
+ *
+ * In addition to handling SIGINT, the RTS also handles SIGFPE
+ * by ignoring it. Apparently IEEE requires floating-point
+ * exceptions to be ignored by default, but alpha-dec-osf3
+ * doesn't seem to do so.
*/
void
init_default_handlers()
/* Oh well, at least we tried. */
prog_belch("failed to install SIGINT handler");
}
+
+ siginterrupt(SIGINT, 1);
+
+ action.sa_handler = SIG_IGN;
+ sigemptyset(&action.sa_mask);
+ action.sa_flags = 0;
+ if (sigaction(SIGFPE, &action, &oact) != 0) {
+ /* Oh well, at least we tried. */
+ prog_belch("failed to install SIGFPE handler");
+ }
+#ifdef alpha_TARGET_ARCH
+ ieee_set_fp_control(0);
+#endif
}
#endif /*! mingw32_TARGET_OS */