Move the thread local functions to the Thread class in runtime/platform

runtime/vm/isolate.cc

 // Copyright (c) 2012, 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 "vm/bigint_store.h"
 #include "vm/code_index_table.h"
@@ skipping 116 matching lines @@
   delete api_state_;
   delete stub_code_;
   delete code_index_table_;
   delete debugger_;
   delete mutex_;
   mutex_ = NULL;  // Fail fast if interrupts are scheduled on a dead isolate.
   delete message_handler_;
   message_handler_ = NULL;  // Fail fast if we send messages to a dead isolate.
 }
 
+void Isolate::SetCurrent(Isolate* current) {
+  Thread::SetThreadLocal(isolate_key, reinterpret_cast<uword>(current));
+}
+
+
+// The single thread local key which stores all the thread local data
+// for a thread. Since an Isolate is the central repository for
+// storing all isolate specific information a single thread local key
+// is sufficient.
+ThreadLocalKey Isolate::isolate_key = Thread::kUnsetThreadLocalKey;
+
+
+void Isolate::InitOnce() {
+  ASSERT(isolate_key == Thread::kUnsetThreadLocalKey);
+  isolate_key = Thread::CreateThreadLocal();
+  ASSERT(isolate_key != Thread::kUnsetThreadLocalKey);
+  create_callback_ = NULL;
+}
+
 
 Isolate* Isolate::Init(const char* name_prefix) {
   Isolate* result = new Isolate();
   ASSERT(result != NULL);
 
   // TODO(5411455): For now just set the recently created isolate as
   // the current isolate.
   SetCurrent(result);
 
   // Setup the isolate message handler.
@@ skipping 287 matching lines @@
 }
 
 
 void Isolate::VisitWeakPersistentHandles(HandleVisitor* visitor) {
   if (api_state() != NULL) {
     api_state()->VisitWeakHandles(visitor);
   }
 }
 
 }  // namespace dart