Set paused_timestamp before notifying

runtime/vm/message_handler.cc

 // Copyright (c) 2011, 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/message_handler.h"
 
 #include "vm/dart.h"
 #include "vm/lockers.h"
 #include "vm/os.h"
 #include "vm/port.h"
@@ skipping 231 matching lines @@
   {
     MonitorLocker ml(&monitor_);
     // Initialize the message handler by running its start function,
     // if we have one.  For an isolate, this will run the isolate's
     // main() function.
     if (pause_on_start()) {
       if (!paused_on_start_) {
         // Temporarily drop the lock when calling out to NotifyPauseOnStart.
         // This avoids a dead lock that can occur when this message handler
         // tries to post a message while a message is being posted to it.
+        paused_on_start_ = true;
+        paused_timestamp_ = OS::GetCurrentTimeMillis();
         monitor_.Exit();
         NotifyPauseOnStart();
         monitor_.Enter();
-        paused_on_start_ = true;
-        paused_timestamp_ = OS::GetCurrentTimeMillis();
       }
       HandleMessages(false, false);
       if (pause_on_start()) {
         // Still paused.
         task_ = NULL;  // No task in queue.
         return;
       } else {
         paused_on_start_ = false;
         paused_timestamp_ = -1;
       }
@@ skipping 121 matching lines @@
 
 
 void MessageHandler::AcquireQueues(AcquiredQueues* acquired_queues) {
   ASSERT(acquired_queues != NULL);
   // No double dipping.
   ASSERT(acquired_queues->handler_ == NULL);
   acquired_queues->Reset(this);
 }
 
 }  // namespace dart