Commit 6d855554 authored by ken's avatar ken
Browse files

[project @ 2001-07-26 03:24:01 by ken]

In addition to handling SIGINT, also handle 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.
parent a1b48d4c
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: Signals.c,v 1.19 2001/01/24 15:38:14 simonmar Exp $ * $Id: Signals.c,v 1.20 2001/07/26 03:24:01 ken Exp $
* *
* (c) The GHC Team, 1998-1999 * (c) The GHC Team, 1998-1999
* *
...@@ -17,6 +17,10 @@ ...@@ -17,6 +17,10 @@
#include "RtsFlags.h" #include "RtsFlags.h"
#include "StablePriv.h" #include "StablePriv.h"
#ifdef alpha_TARGET_ARCH
#include <machine/fpu.h>
#endif
#ifndef mingw32_TARGET_OS #ifndef mingw32_TARGET_OS
#ifndef PAR #ifndef PAR
...@@ -285,6 +289,11 @@ shutdown_handler(int sig STG_UNUSED) ...@@ -285,6 +289,11 @@ shutdown_handler(int sig STG_UNUSED)
* Haskell code may install their own SIGINT handler, which is * Haskell code may install their own SIGINT handler, which is
* fine, provided they're so kind as to put back the old one * fine, provided they're so kind as to put back the old one
* when they de-install. * 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 void
init_default_handlers() init_default_handlers()
...@@ -303,6 +312,17 @@ init_default_handlers() ...@@ -303,6 +312,17 @@ init_default_handlers()
} }
siginterrupt(SIGINT, 1); 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 */ #endif /*! mingw32_TARGET_OS */
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