Redo background compilation queues to allocate queue and its element in the C-heap

runtime/vm/isolate.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_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/atomic.h"
@@ skipping 600 matching lines @@
   void set_compilation_allowed(bool allowed) {
     compilation_allowed_ = allowed;
   }
 
   // In precompilation we finalize all regular classes before compiling.
   bool all_classes_finalized() const { return all_classes_finalized_; }
   void set_all_classes_finalized(bool value) {
     all_classes_finalized_ = value;
   }
 
-  void IncrCHAInvalidationGen() { cha_invalidation_gen_++; }
-  void ResetCHAInvalidationGen() { cha_invalidation_gen_ = 0; }
+  static const uint32_t kInvalidGen = 0;
+
+  void IncrCHAInvalidationGen() {
+    cha_invalidation_gen_++;
+    if (cha_invalidation_gen_ == kInvalidGen) cha_invalidation_gen_++;
+  }
+  void ResetCHAInvalidationGen() { cha_invalidation_gen_ = kInvalidGen; }
   uint32_t cha_invalidation_gen() const { return cha_invalidation_gen_; }
 
-  void IncrFieldInvalidationGen() { field_invalidation_gen_++; }
-  void ResetFieldInvalidationGen() { field_invalidation_gen_ = 0; }
+
+  void IncrFieldInvalidationGen() {
+    field_invalidation_gen_++;
+    if (field_invalidation_gen_ == kInvalidGen) field_invalidation_gen_++;
+  }
+
+  void ResetFieldInvalidationGen() { field_invalidation_gen_ = kInvalidGen; }
   uint32_t field_invalidation_gen() const { return field_invalidation_gen_; }
 
-  void IncrPrefixInvalidationGen() { prefix_invalidation_gen_++; }
-  void ResetPrefixInvalidationGen() { prefix_invalidation_gen_ = 0; }
+  void IncrPrefixInvalidationGen() {
+    prefix_invalidation_gen_++;
+    if (prefix_invalidation_gen_ == kInvalidGen) prefix_invalidation_gen_++;
+  }
+  void ResetPrefixInvalidationGen() { prefix_invalidation_gen_ = kInvalidGen; }
   uint32_t prefix_invalidation_gen() const { return prefix_invalidation_gen_; }
 
   RawObject* InvokePendingServiceExtensionCalls();
   void AppendServiceExtensionCall(const Instance& closure,
                            const String& method_name,
                            const Array& parameter_keys,
                            const Array& parameter_values,
                            const Instance& reply_port,
                            const Instance& id);
   void RegisterServiceExtensionHandler(const String& name,
@@ skipping 332 matching lines @@
   uint8_t* serialized_message_;
   intptr_t serialized_message_len_;
   Isolate::Flags isolate_flags_;
   bool paused_;
   bool errors_are_fatal_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_