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

runtime/vm/isolate.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/isolate.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/text_buffer.h"
@@ skipping 1150 matching lines @@
     if (event != NULL) {
       event->Instant("Runnable");
       event->Complete();
     }
   }
   if (FLAG_support_service && Service::isolate_stream.enabled()) {
     ServiceEvent runnableEvent(this, ServiceEvent::kIsolateRunnable);
     Service::HandleEvent(&runnableEvent);
   }
 #endif  // !PRODUCT
+  GetRunnableLatencyMetric()->set_value(UptimeMicros());
+  if (FLAG_print_benchmarking_metrics) {
+    {
+      StartIsolateScope scope(this);
+      heap()->CollectAllGarbage();
+    }
+    int64_t heap_size = (heap()->UsedInWords(Heap::kNew) * kWordSize) +
+                        (heap()->UsedInWords(Heap::kOld) * kWordSize);
+    GetRunnableHeapSizeMetric()->set_value(heap_size);
+  }
   return true;
 }
 
 
 bool Isolate::VerifyPauseCapability(const Object& capability) const {
   return !capability.IsNull() && capability.IsCapability() &&
          (pause_capability() == Capability::Cast(capability).Id());
 }
 
 
@@ skipping 477 matching lines @@
   if (FLAG_dump_symbol_stats) {
     Symbols::DumpStats(this);
   }
   if (FLAG_trace_isolates) {
     heap()->PrintSizes();
     OS::Print(
         "[-] Stopping isolate:\n"
         "\tisolate:    %s\n",
         name());
   }
-  if (FLAG_print_metrics) {
+  if (FLAG_print_metrics || FLAG_print_benchmarking_metrics) {
     LogBlock lb;
     OS::PrintErr("Printing metrics for %s\n", name());
 #define ISOLATE_METRIC_PRINT(type, variable, name, unit)                       \
   OS::PrintErr("%s\n", metric_##variable##_.ToString());
-
-    ISOLATE_METRIC_LIST(ISOLATE_METRIC_PRINT);
+    ISOLATE_METRIC_LIST(ISOLATE_METRIC_PRINT)
 #undef ISOLATE_METRIC_PRINT
     OS::PrintErr("\n");
   }
 }
 
 
 void Isolate::StopBackgroundCompiler() {
   // Wait until all background compilation has finished.
   if (background_compiler_ != NULL) {
     BackgroundCompiler::Stop(this);
@@ skipping 1251 matching lines @@
 void IsolateSpawnState::DecrementSpawnCount() {
   ASSERT(spawn_count_monitor_ != NULL);
   ASSERT(spawn_count_ != NULL);
   MonitorLocker ml(spawn_count_monitor_);
   ASSERT(*spawn_count_ > 0);
   *spawn_count_ = *spawn_count_ - 1;
   ml.Notify();
 }
 
 }  // namespace dart