Support profiler code transition tags

runtime/vm/service.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/service.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/globals.h"
 
@@ skipping 2328 matching lines @@
   Profile::kUser,
   Profile::kVMUser,
   Profile::kVM,
   Profile::kNoTags,  // Default value.
 };
 
 
 static const MethodParameter* get_cpu_profile_params[] = {
   ISOLATE_PARAMETER,
   new EnumParameter("tags", true, tags_enum_names),
+  new BoolParameter("_codeTransitionTags", false),
   NULL,
 };
 
 
 // TODO(johnmccutchan): Rename this to GetCpuSamples.
 static bool GetCpuProfile(Isolate* isolate, JSONStream* js) {
   Profile::TagOrder tag_order =
       EnumMapper(js->LookupParam("tags"), tags_enum_names, tags_enum_values);
-  ProfilerService::PrintJSON(js, tag_order);
+  intptr_t extra_tags = 0;
+  if (BoolParameter::Parse(js->LookupParam("_codeTransitionTags"))) {
+    extra_tags |= ProfilerService::kCodeTransitionTagsBit;
+  }
+  ProfilerService::PrintJSON(js, tag_order, extra_tags);
   return true;
 }
 
 
 static const MethodParameter* get_allocation_samples_params[] = {
   ISOLATE_PARAMETER,
   new EnumParameter("tags", true, tags_enum_names),
   new IdParameter("classId", false),
   NULL,
 };
@@ skipping 711 matching lines @@
     ServiceMethodDescriptor& method = service_methods_[i];
     if (strcmp(method_name, method.name) == 0) {
       return &method;
     }
   }
   return NULL;
 }
 
 
 }  // namespace dart