Lazy deopt without code patching.

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 "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/text_buffer.h"
@@ skipping 795 matching lines @@
       symbols_mutex_(new Mutex()),
       type_canonicalization_mutex_(new Mutex()),
       constant_canonicalization_mutex_(new Mutex()),
       megamorphic_lookup_mutex_(new Mutex()),
       message_handler_(NULL),
       spawn_state_(NULL),
       is_runnable_(false),
       gc_prologue_callback_(NULL),
       gc_epilogue_callback_(NULL),
       defer_finalization_count_(0),
+      pending_deopts_(new MallocGrowableArray<PendingLazyDeopt>),
       deopt_context_(NULL),
       is_service_isolate_(false),
       stacktrace_(NULL),
       stack_frame_index_(-1),
       last_allocationprofile_accumulator_reset_timestamp_(0),
       last_allocationprofile_gc_timestamp_(0),
       object_id_ring_(NULL),
       tag_table_(GrowableObjectArray::null()),
       deoptimized_code_array_(GrowableObjectArray::null()),
       sticky_error_(Error::null()),
@@ skipping 45 matching lines @@
   delete mutex_;
   mutex_ = NULL;  // Fail fast if interrupts are scheduled on a dead isolate.
   delete symbols_mutex_;
   symbols_mutex_ = NULL;
   delete type_canonicalization_mutex_;
   type_canonicalization_mutex_ = NULL;
   delete constant_canonicalization_mutex_;
   constant_canonicalization_mutex_ = NULL;
   delete megamorphic_lookup_mutex_;
   megamorphic_lookup_mutex_ = NULL;
+  delete pending_deopts_;
+  pending_deopts_ = NULL;
   delete message_handler_;
   message_handler_ = NULL;  // Fail fast if we send messages to a dead isolate.
   ASSERT(deopt_context_ == NULL);  // No deopt in progress when isolate deleted.
   delete spawn_state_;
 #ifndef PRODUCT
   if (FLAG_support_service) {
     delete object_id_ring_;
   }
 #endif  // !PRODUCT
   object_id_ring_ = NULL;
@@ skipping 2009 matching lines @@
 void IsolateSpawnState::DecrementSpawnCount() {
   ASSERT(spawn_count_monitor_ != NULL);
   ASSERT(spawn_count_ != NULL);
   MonitorLocker ml(spawn_count_monitor_);
   ASSERT(*spawn_count_ > 0);
   *spawn_count_ = *spawn_count_ - 1;
   ml.Notify();
 }
 
 }  // namespace dart