X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FException.h;h=251a957c9f963e78652d5bfa283c16cc15c00940;hb=e5beb5fa8e010e49a6fe470a4a4e9ad8dbfd71f0;hp=07203f9428f6c88914d18ba697a53ab7dc61223d;hpb=e1dc924bbb4efde0128e9dbeafa7580daada2706;p=ghc-hetmet.git

diff --git a/ghc/rts/Exception.h b/ghc/rts/Exception.h
index 07203f9..251a957 100644
--- a/ghc/rts/Exception.h
+++ b/ghc/rts/Exception.h
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: Exception.h,v 1.1 1999/12/01 14:34:38 simonmar Exp $
+ * $Id: Exception.h,v 1.2 2000/03/17 10:24:44 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -9,3 +9,22 @@
 
 extern const StgInfoTable blockAsyncExceptionszh_ret_info;
 extern const StgInfoTable unblockAsyncExceptionszh_ret_info;
+
+/* Determine whether a thread is interruptible (ie. blocked
+ * indefinitely).  Interruptible threads can be sent an exception with
+ * killThread# even if they have async exceptions blocked.
+ */
+static __inline__ int
+interruptible(StgTSO *t)
+{
+  switch (t->why_blocked) {
+  case BlockedOnMVar:
+  case BlockedOnException:
+  case BlockedOnRead:
+  case BlockedOnWrite:
+  case BlockedOnDelay:
+    return 1;
+  default:
+    return 0;
+  }
+}