X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FSignals.c;h=68a9d5cd2928766f97d205ad1aed649da2844e3e;hb=48c557b5117015fcec8e6fb05e7de558cca462fc;hp=d2a61e3d403a0b9b53f8c9577a71fc37d3d50e3f;hpb=67419f264a735dfd95001d0d8aedb28d01cdb18a;p=ghc-hetmet.git

diff --git a/ghc/rts/Signals.c b/ghc/rts/Signals.c
index d2a61e3..68a9d5c 100644
--- a/ghc/rts/Signals.c
+++ b/ghc/rts/Signals.c
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: Signals.c,v 1.28 2002/09/06 14:34:13 simonmar Exp $
+ * $Id: Signals.c,v 1.29 2002/09/17 12:11:45 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -286,6 +286,27 @@ startSignalHandlers(void)
   unblockUserSignals();
 }
 
+/* ----------------------------------------------------------------------------
+ * Mark signal handlers during GC.
+ *
+ * We do this rather than trying to start all the signal handlers
+ * prior to GC, because that requires extra heap for the new threads.
+ * Signals must be blocked (see blockUserSignals() above) during GC to
+ * avoid race conditions.
+ * -------------------------------------------------------------------------- */
+
+void
+markSignalHandlers (evac_fn evac)
+{
+    StgPtr *p;
+
+    p = next_pending_handler;
+    while (p != pending_handler_buf) {
+	p--;
+	evac((StgClosure **)p);
+    }
+}
+
 #else // PAR
 StgInt 
 stg_sig_install(StgInt sig, StgInt spi, StgStablePtr handler, sigset_t *mask)