Added callgrind.sh to automate valgrind analysis

scripts/callgrind.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+#
+# This  script is  intended to  run  Prolog goals  under valgrind  for
+# performance analysis.  This is to  be combined with valgrind.pl from
+# https://github.com/JanWielemaker/my-prolog-lib.  For example:
+#
+# ```
+# ../scripts/callgrind.sh src/swipl [option ...] [arg ...]
+# ?- cg(Goal).
+# ?- halt.
+# ```
+
+tool=--tool=callgrind
+opts="--dump-instr=yes --collect-jumps=yes"
+
+done=false
+while [ $done = false ]; do
+    case "$1" in
+	--tool=cachegrind)
+	    tool="$1"
+	    opts=" --cache-sim=yes"
+	    shift
+	    ;;
+	*)
+	    done=true
+	    ;;
+    esac
+done
+
+echo "Running valgrind $tool $opts --instr-atstart=no $*"
+valgrind $tool $opts --instr-atstart=no $*
+kcachegrind $(ls -tr callgrind.out.* | tail -1)