Initial UserTag and dart:profiler library

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 "platform/assert.h"
 #include "platform/json.h"
 #include "lib/mirrors.h"
@@ skipping 318 matching lines @@
       gc_prologue_callback_(NULL),
       gc_epilogue_callback_(NULL),
       defer_finalization_count_(0),
       deopt_context_(NULL),
       stacktrace_(NULL),
       stack_frame_index_(-1),
       cha_used_(false),
       object_id_ring_(NULL),
       profiler_data_(NULL),
       thread_state_(NULL),
+      tag_table_(GrowableObjectArray::null()),
+      current_tag_(UserTag::null()),
       next_(NULL),
       REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_INITIALIZERS)
       REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_SCOPE_INIT)
       reusable_handles_() {
   set_vm_tag(VMTag::kIdleTagId);
+  set_user_tag(UserTags::kNoUserTag);
 }
 #undef REUSABLE_HANDLE_SCOPE_INIT
 #undef REUSABLE_HANDLE_INITIALIZERS
 
 
 Isolate::~Isolate() {
   delete [] name_;
   delete heap_;
   delete object_store_;
   delete api_state_;
@@ skipping 92 matching lines @@
 
   result->debugger_ = new Debugger();
   result->debugger_->Initialize(result);
   if (FLAG_trace_isolates) {
     if (name_prefix == NULL || strcmp(name_prefix, "vm-isolate") != 0) {
       OS::Print("[+] Starting isolate:\n"
                 "\tisolate:    %s\n", result->name());
     }
   }
 
-
   return result;
 }
 
 
 void Isolate::BuildName(const char* name_prefix) {
   ASSERT(name_ == NULL);
   if (name_prefix == NULL) {
     name_prefix = "isolate";
   }
   const char* kFormat = "%s-%lld";
@@ skipping 378 matching lines @@
   }
 
   // Visit the dart api state for all local and persistent handles.
   if (api_state() != NULL) {
     api_state()->VisitObjectPointers(visitor, visit_prologue_weak_handles);
   }
 
   // Visit the top context which is stored in the isolate.
   visitor->VisitPointer(reinterpret_cast<RawObject**>(&top_context_));
 
+  // Visit the current tag which is stored in the isolate.
+  visitor->VisitPointer(reinterpret_cast<RawObject**>(&current_tag_));
+
+  // Visit the tag table which is stored in the isolate.
+  visitor->VisitPointer(reinterpret_cast<RawObject**>(&tag_table_));
+
   // Visit objects in the debugger.
   debugger()->VisitObjectPointers(visitor);
 
   // Visit objects that are being used for deoptimization.
   if (deopt_context() != NULL) {
     deopt_context()->VisitObjectPointers(visitor);
   }
 }
 
 
@@ skipping 99 matching lines @@
   ASSERT(state->id != Thread::kInvalidThreadId);
   ThreadInterrupter::InterruptThread(state);
 }
 
 
 void Isolate::ProfileIdle() {
   vm_tag_counters_.Increment(vm_tag());
 }
 
 
+void Isolate::set_tag_table(const GrowableObjectArray& value) {
+  tag_table_ = value.raw();
+}
+
+
+void Isolate::set_current_tag(const UserTag& tag) {
+  intptr_t user_tag = tag.tag();
+  set_user_tag(static_cast<uword>(user_tag));
+  current_tag_ = tag.raw();
+}
+
+
+void Isolate::clear_current_tag() {
+  set_user_tag(UserTags::kNoUserTag);
+  current_tag_ = UserTag::null();
+}
+
+
 void Isolate::VisitIsolates(IsolateVisitor* visitor) {
   if (visitor == NULL) {
     return;
   }
   MonitorLocker ml(isolates_list_monitor_);
   Isolate* current = isolates_list_head_;
   while (current) {
     visitor->VisitIsolate(current);
     current = current->next_;
   }
@@ skipping 149 matching lines @@
   return func.raw();
 }
 
 
 void IsolateSpawnState::Cleanup() {
   SwitchIsolateScope switch_scope(isolate());
   Dart::ShutdownIsolate();
 }
 
 }  // namespace dart