Track large array buffer allocations.

src/counters.h

Index: src/counters.h
diff --git a/src/counters.h b/src/counters.h
index 31e45ab46312d909be4ca28498eaed6e903168d4..78fb28dffa987268d6209e46218ee0ed61fbced0 100644
--- a/src/counters.h
+++ b/src/counters.h
@@ -928,7 +928,8 @@ class RuntimeCallTimerScope {
   HR(wasm_functions_per_asm_module, V8.WasmFunctionsPerModule.asm, 1, 100000, \
      51)                                                                      \
   HR(wasm_functions_per_wasm_module, V8.WasmFunctionsPerModule.wasm, 1,       \
-     100000, 51)
+     100000, 51)                                                              \
+  HR(big_array_buffer_allocations, V8.BigArrayBufferAllocations, 1, 32, 32)

[bbudge, 2017/03/31 19:01:18]

nit: maybe rename so it's closer to array_buffer_new_size_failures, i.e.
array_buffer_big_allocations.

[kschimpf, 2017/03/31 19:31:52]

Good point, fixing names.

 
 #define HISTOGRAM_TIMER_LIST(HT)                                               \
   /* Garbage collection timers. */                                             \