[tools] Add meta script for convenient ranking of GC NVP output.

tools/eval_gc_time.sh

Index: tools/eval_gc_time.sh
diff --git a/tools/eval_gc_time.sh b/tools/eval_gc_time.sh
new file mode 100755
index 0000000000000000000000000000000000000000..cf113c65aee4ed4cbb872058157b802391c26a45
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+++ b/tools/eval_gc_time.sh
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+#!/bin/bash
+#
+# Copyright 2015 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Convenience Script used to rank GC NVP output.
+
+print_usage_and_die() {
+  echo "Usage: $0 new-gen-rank|old-gen-rank max|avg logfile"
+  exit 1
+}
+
+if [ $# -ne 3 ]; then
+  print_usage_and_die
+fi
+
+case $1 in
+  new-gen-rank|old-gen-rank)
+    OP=$1
+    ;;
+  *)
+    print_usage_and_die
+esac
+
+case $2 in 
+  max|avg)
+    RANK_MODE=$2
+    ;;
+  *)
+    print_usage_and_die
+esac
+
+LOGFILE=$3
+
+GENERAL_INTERESTING_KEYS="\
+  pause \
+"
+
+INTERESTING_NEW_GEN_KEYS="\
+  ${GENERAL_INTERESTING_KEYS} \
+  scavenge \
+  weak \
+  roots \
+  old_new \
+  code \
+  semispace \
+  object_groups \
+"
+
+INTERESTING_OLD_GEN_KEYS="\
+  ${GENERAL_INTERESTING_KEYS} \
+  external \
+  mark \
+  mark_inc \
+  mark_prepcodeflush \
+  mark_root \
+  mark_topopt \
+  mark_retainmaps \
+  mark_weakclosure \
+  mark_stringtable \
+  mark_weakrefs \
+  mark_globalhandles \
+  mark_codeflush \
+  mark_optimizedcodemaps \
+  store_buffer_clear \
+  slots_buffer_clear \
+  sweep \
+  sweepns \
+  sweepos \
+  sweepcode \
+  sweepcell \
+  sweepmap \
+  sweepaborted \
+  evacuate \
+  new_new \
+  old_new \
+  root_new \
+  compaction_ptrs \
+  intracompaction_ptrs \
+  misc_compaction \
+  inc_weak_closure \
+  weakcollection_process \
+  weakcollection_clear \
+  weakcollection_abort \
+  weakcells \
+  nonlive_refs \
+"
+
+BASE_DIR=$(dirname $0)
+
+case $OP in
+  new-gen-rank)
+    cat $LOGFILE | grep "gc=s" \
+      | $BASE_DIR/eval_gc_nvp.py \
+      --no-histogram \
+      --rank $RANK_MODE \
+      ${INTERESTING_NEW_GEN_KEYS}
+    ;;
+  old-gen-rank)
+    cat $LOGFILE | grep "gc=ms" | grep "reduce_memory=0" | grep -v "steps=0" \
+      | $BASE_DIR/eval_gc_nvp.py \
+      --no-histogram \
+      --rank $RANK_MODE \
+      ${INTERESTING_OLD_GEN_KEYS}
+    ;;
+  *)
+    ;;
+esac
+