Hide kernel isolate from isolate list; do not register it either

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 22 matching lines @@
 #include "vm/safepoint.h"
 #include "vm/service_event.h"
 #include "vm/service_isolate.h"
 #include "vm/source_report.h"
 #include "vm/stack_frame.h"
 #include "vm/symbols.h"
 #include "vm/timeline.h"
 #include "vm/type_table.h"
 #include "vm/unicode.h"
 #include "vm/version.h"
+#include "vm/kernel_isolate.h"
 
 namespace dart {
 
 #define Z (T->zone())
 
 
 DECLARE_FLAG(bool, trace_service);
 DECLARE_FLAG(bool, trace_service_pause_events);
 DECLARE_FLAG(bool, profile_vm);
 DEFINE_FLAG(charp,
             vm_name,
             "vm",
             "The default name of this vm as reported by the VM service "
             "protocol");
 
 DEFINE_FLAG(bool,
             warn_on_pause_with_no_debugger,
             false,
             "Print a message when an isolate is paused but there is no "
             "debugger attached.");
 
+DECLARE_FLAG(bool, show_kernel_isolate);
+
 #ifndef PRODUCT
 // The name of this of this vm as reported by the VM service protocol.
 static char* vm_name = NULL;
 
 
 static const char* GetVMName() {
   if (vm_name == NULL) {
     return FLAG_vm_name;
   }
   return vm_name;
@@ skipping 3701 matching lines @@
   return true;
 }
 
 
 class ServiceIsolateVisitor : public IsolateVisitor {
  public:
   explicit ServiceIsolateVisitor(JSONArray* jsarr) : jsarr_(jsarr) {}
   virtual ~ServiceIsolateVisitor() {}
 
   void VisitIsolate(Isolate* isolate) {
-    if (!IsVMInternalIsolate(isolate)) {
+    bool is_kernel_isolate = false;
+#ifndef DART_PRECOMPILED_RUNTIME
+    is_kernel_isolate =
+        KernelIsolate::IsKernelIsolate(isolate) && !FLAG_show_kernel_isolate;
+#endif
+    if (!IsVMInternalIsolate(isolate) && !is_kernel_isolate) {
       jsarr_->AddValue(isolate);
     }
   }
 
  private:
   JSONArray* jsarr_;
 };
 
 
 static const MethodParameter* get_vm_params[] = {
@@ skipping 348 matching lines @@
     if (strcmp(method_name, method.name) == 0) {
       return &method;
     }
   }
   return NULL;
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart