- Assert that we do not hold the timeline lock while entering

runtime/vm/deopt_instructions.h

 // 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.
 
 #ifndef VM_DEOPT_INSTRUCTIONS_H_
 #define VM_DEOPT_INSTRUCTIONS_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
@@ skipping 206 matching lines @@
   bool source_frame_is_allocated_;
   intptr_t* source_frame_;
   intptr_t source_frame_size_;
   intptr_t* cpu_registers_;
   fpu_register_t* fpu_registers_;
   intptr_t num_args_;
   ICData::DeoptReasonId deopt_reason_;
   uint32_t deopt_flags_;
   intptr_t caller_fp_;
   Thread* thread_;
-  TimelineEvent* timeline_event_;
+  int64_t deopt_start_micros_;
 
   DeferredSlot* deferred_slots_;
 
   intptr_t deferred_objects_count_;
   DeferredObject** deferred_objects_;
 
   const bool is_lazy_deopt_;
 
   DISALLOW_COPY_AND_ASSIGN(DeoptContext);
 };
@@ skipping 302 matching lines @@
   class ReasonField : public BitField<ICData::DeoptReasonId, 0, 8> { };
   class FlagsField : public BitField<uint32_t, 8, 8> { };
 
  private:
   static const intptr_t kEntrySize = 3;
 };
 
 }  // namespace dart
 
 #endif  // VM_DEOPT_INSTRUCTIONS_H_