/* -----------------------------------------------------------------------------
- * $Id: Signals.c,v 1.10 1999/11/09 15:46:57 simonmar Exp $
+ * $Id: Signals.c,v 1.15 2000/03/15 15:31:36 simonmar Exp $
*
* (c) The GHC Team, 1998-1999
*
if (handlers == NULL) {
/* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- fprintf(stderr, "VM exhausted (in more_handlers)\n");
- exit(EXIT_FAILURE);
+ barf("VM exhausted (in more_handlers)");
}
for(i = nHandlers; i <= sig; i++)
/* Fill in the new slots with default actions */
next_pending_handler--;
- /* create*Thread puts the thread on the head of the runnable
- * queue, hence it will be run next. Poor man's priority
- * scheduling.
- */
- createIOThread(RtsFlags.GcFlags.initialStkSize,
- (StgClosure *) *next_pending_handler);
+ scheduleThread(
+ createIOThread(RtsFlags.GcFlags.initialStkSize,
+ (StgClosure *) *next_pending_handler));
}
unblockUserSignals();
sig_install(StgInt sig, StgInt spi, StgStablePtr handler, sigset_t *mask)
{
/* don't fflush(stdout); WORKAROUND bug in Linux glibc */
- fprintf(stderr,
- "No signal handling support in a parallel implementation.\n");
- exit(EXIT_FAILURE);
+ barf("no signal handling support in a parallel implementation");
}
void
} else
#endif
- shutdownHaskellAndExit(EXIT_FAILURE);
+ interruptStgRts();
}
/*
* 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.
+ *
+ * We ignore SIGPIPE, because our I/O library handles EPIPE properly,
+ * and a SIGPIPE tends to cause the program to exit silently and
+ * mysteriously.
*/
void
-init_shutdown_handler()
+init_default_handlers()
{
struct sigaction action,oact;
action.sa_flags = 0;
if (sigaction(SIGINT, &action, &oact) != 0) {
/* Oh well, at least we tried. */
-#ifdef DEBUG
- fprintf(stderr, "init_shutdown_handler: failed to reg SIGINT handler");
-#endif
+ prog_belch("failed to install SIGINT handler");
}
-}
-
-
+ action.sa_handler = SIG_IGN;
+ if (sigaction(SIGPIPE, &action, &oact) != 0) {
+ prog_belch("failed to install SIGINT handler");
+ }
+}
#endif /*! mingw32_TARGET_OS */