From de6a898b43cacc69cd9bc4c6675d3e8771047f17 Mon Sep 17 00:00:00 2001
From: "simonmar@microsoft.com" <unknown>
Date: Fri, 14 Dec 2007 13:59:09 +0000
Subject: [PATCH] findSlop: useful function for tracking down excessive slop
 in gdb

---
 rts/sm/Storage.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/rts/sm/Storage.c b/rts/sm/Storage.c
index ecd9b54..2305996 100644
--- a/rts/sm/Storage.c
+++ b/rts/sm/Storage.c
@@ -1118,6 +1118,21 @@ void freeExec (void *addr)
 
 #ifdef DEBUG
 
+// Useful for finding partially full blocks in gdb
+void findSlop(bdescr *bd);
+void findSlop(bdescr *bd)
+{
+    lnat slop;
+
+    for (; bd != NULL; bd = bd->link) {
+        slop = (bd->blocks * BLOCK_SIZE_W) - (bd->free - bd->start);
+        if (slop > (1024/sizeof(W_))) {
+            debugBelch("block at %p (bdescr %p) has %ldKB slop\n",
+                       bd->start, bd, slop / (1024/sizeof(W_)));
+        }
+    }
+}
+
 nat
 countBlocks(bdescr *bd)
 {
-- 
1.7.10.4