Run Crankshaft on a separate thread.

src/v8-counters.h

 // Copyright 2011 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 83 matching lines @@
   /* Amount of source code skipped over using preparsing. */          \
   SC(total_preparse_skipped, V8.TotalPreparseSkipped)                 \
   /* Number of symbol lookups skipped using preparsing */             \
   SC(total_preparse_symbols_skipped, V8.TotalPreparseSymbolSkipped)   \
   /* Amount of compiled source code. */                               \
   SC(total_compile_size, V8.TotalCompileSize)                         \
   /* Amount of source code compiled with the old codegen. */          \
   SC(total_old_codegen_source_size, V8.TotalOldCodegenSourceSize)     \
   /* Amount of source code compiled with the full codegen. */         \
   SC(total_full_codegen_source_size, V8.TotalFullCodegenSourceSize)   \
+  SC(functions_compiled_parallely, V8.FunctionsCompiledParallely)     \
   /* Number of contexts created from scratch. */                      \
   SC(contexts_created_from_scratch, V8.ContextsCreatedFromScratch)    \
   /* Number of contexts created by partial snapshot. */               \
   SC(contexts_created_by_snapshot, V8.ContextsCreatedBySnapshot)      \
   /* Number of code objects found from pc. */                         \
   SC(pc_to_code, V8.PcToCode)                                         \
   SC(pc_to_code_cached, V8.PcToCodeCached)                            \
   /* The store-buffer implementation of the write barrier. */         \
   SC(store_buffer_compactions, V8.StoreBufferCompactions)             \
   SC(store_buffer_overflows, V8.StoreBufferOverflows)
@@ skipping 190 matching lines @@
   // Sliding state window counters.
   StatsCounter state_counters_[kSlidingStateWindowCounterCount];
   friend class Isolate;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8_COUNTERS_H_