Track async causal stack traces

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 1316 matching lines @@
 
 static bool GetStack(Thread* thread, JSONStream* js) {
   Isolate* isolate = thread->isolate();
   if (isolate->debugger() == NULL) {
     js->PrintError(kFeatureDisabled,
                    "Cannot get stack when debugger disabled.");
     return true;
   }
   ASSERT(isolate->compilation_allowed());
   DebuggerStackTrace* stack = isolate->debugger()->StackTrace();
+  DebuggerStackTrace* async_causal_stack =
+      isolate->debugger()->AsyncCausalStackTrace();
   // Do we want the complete script object and complete local variable objects?
   // This is true for dump requests.
   const bool full = BoolParameter::Parse(js->LookupParam("_full"), false);
   JSONObject jsobj(js);
   jsobj.AddProperty("type", "Stack");
   {
     JSONArray jsarr(&jsobj, "frames");
 
     intptr_t num_frames = stack->Length();
     for (intptr_t i = 0; i < num_frames; i++) {
       ActivationFrame* frame = stack->FrameAt(i);
       JSONObject jsobj(&jsarr);
       frame->PrintToJSONObject(&jsobj, full);
       jsobj.AddProperty("index", i);
     }
   }
 
+  if (async_causal_stack != NULL) {
+    JSONArray jsarr(&jsobj, "asyncCausalFrames");
+    intptr_t num_frames = async_causal_stack->Length();
+    for (intptr_t i = 0; i < num_frames; i++) {
+      ActivationFrame* frame = async_causal_stack->FrameAt(i);
+      JSONObject jsobj(&jsarr);
+      frame->PrintToJSONObject(&jsobj, full);
+      jsobj.AddProperty("index", i);
+    }
+  }
+
   {
     MessageHandler::AcquiredQueues aq(isolate->message_handler());
     jsobj.AddProperty("messages", aq.queue());
   }
 
   return true;
 }
 
 
 static bool HandleCommonEcho(JSONObject* jsobj, JSONStream* js) {
@@ skipping 2758 matching lines @@
     if (strcmp(method_name, method.name) == 0) {
       return &method;
     }
   }
   return NULL;
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart