Expose more detailed memory statistics

src/v8-counters.h

Index: src/v8-counters.h
diff --git a/src/v8-counters.h b/src/v8-counters.h
index f36b0edb23f37939b3f92648fa53f528d55d5001..164e6d13298ab87e0d88be48680d6e48b754cc8c 100644
--- a/src/v8-counters.h
+++ b/src/v8-counters.h
@@ -246,7 +246,22 @@ namespace internal {
   SC(smi_checks_removed, V8.SmiChecksRemoved)                         \
   SC(map_checks_removed, V8.MapChecksRemoved)                         \
   SC(quote_json_char_count, V8.QuoteJsonCharacterCount)               \
-  SC(quote_json_char_recount, V8.QuoteJsonCharacterReCount)
+  SC(quote_json_char_recount, V8.QuoteJsonCharacterReCount)           \
+  SC(new_space_bytes_allocated, V8.MemoryNewSpaceBytesAllocated)      \
+  SC(new_space_bytes_used, V8.MemoryNewSpaceBytesUsed)                \
+  SC(old_pointer_space_bytes_allocated,                               \
+     V8.MemoryOldPointerSpaceBytesAllocated)                          \
+  SC(old_pointer_space_bytes_used, V8.MemoryOldPointerSpaceBytesUsed) \
+  SC(old_data_space_bytes_allocated, V8.MemoryOldDataSpaceBytesAllocated) \
+  SC(old_data_space_bytes_used, V8.MemoryOldDataSpaceBytesUsed)       \
+  SC(code_space_bytes_allocated, V8.MemoryCodeSpaceBytesAllocated)    \
+  SC(code_space_bytes_used, V8.MemoryCodeSpaceBytesUsed)              \
+  SC(map_space_bytes_allocated, V8.MemoryMapSpaceBytesAllocated)      \
+  SC(map_space_bytes_used, V8.MemoryMapSpaceBytesUsed)                \
+  SC(cell_space_bytes_allocated, V8.MemoryCellSpaceBytesAllocated)    \
+  SC(cell_space_bytes_used, V8.MemoryCellSpaceBytesUsed)              \
+  SC(lo_space_bytes_allocated, V8.MemoryLoSpaceBytesAllocated)        \
+  SC(lo_space_bytes_used, V8.MemoryLoSpaceBytesUsed)
 
 
 // This file contains all the v8 counters that are in use.