Heap profiling: add logging of heap memory stats (capacity, used) under 'log-gc' flag.

src/heap.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3388 matching lines @@
   ASSERT(0 <= type && type <= LAST_TYPE);
   info[type].increment_number(1);
   info[type].increment_bytes(obj->Size());
 }
 #endif
 
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
 void HeapProfiler::WriteSample() {
   LOG(HeapSampleBeginEvent("Heap", "allocated"));
+  LOG(HeapSampleStats(
+      "Heap", "allocated", Heap::Capacity(), Heap::SizeOfObjects()));
 
   HistogramInfo info[LAST_TYPE+1];
 #define DEF_TYPE_NAME(name) info[name].set_name(#name);
   INSTANCE_TYPE_LIST(DEF_TYPE_NAME)
 #undef DEF_TYPE_NAME
 
   HeapIterator iterator;
   while (iterator.has_next()) {
     CollectStats(iterator.next(), info);
   }
@@ skipping 296 matching lines @@
 #ifdef DEBUG
 bool Heap::GarbageCollectionGreedyCheck() {
   ASSERT(FLAG_gc_greedy);
   if (Bootstrapper::IsActive()) return true;
   if (disallow_allocation_failure()) return true;
   return CollectGarbage(0, NEW_SPACE);
 }
 #endif
 
 } }  // namespace v8::internal