Add --print-benchmarking-metrics to the VM for Golem.

runtime/vm/dart.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/dart.h"
 
 #include "vm/become.h"
 #include "vm/clustered_snapshot.h"
 #include "vm/code_observers.h"
 #include "vm/cpu.h"
@@ skipping 467 matching lines @@
   if (FLAG_support_timeline) {
     if (FLAG_trace_shutdown) {
       OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Shutting down timeline\n",
                    UptimeMillis());
     }
     Timeline::Shutdown();
   }
   if (FLAG_trace_shutdown) {
     OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Done\n", UptimeMillis());
   }
+  if (FLAG_print_benchmarking_metrics) {
+    OS::Print("PeakRSS(MemoryUse): %" Pd64 " B.\n", OS::MaxRSS());

[Cutch, 2016/12/16 21:49:07]

This can just be a VM metric

+  }
 
   return NULL;
 }
 
 
 Isolate* Dart::CreateIsolate(const char* name_prefix,
                              const Dart_IsolateFlags& api_flags) {
   // Create a new isolate.
   Isolate* isolate = Isolate::Init(name_prefix, api_flags);
   return isolate;
@@ skipping 240 matching lines @@
   return predefined_handles_->handles_.IsValidScopedHandle(address);
 }
 
 
 bool Dart::IsReadOnlyApiHandle(Dart_Handle handle) {
   ASSERT(predefined_handles_ != NULL);
   return predefined_handles_->api_handles_.IsValidHandle(handle);
 }
 
 }  // namespace dart