Migrate NoSafepointScope; add constrained concurrent allocation to unit test

runtime/vm/object.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/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 881 matching lines @@
 }
 
 
 // Make unused space in an object whose type has been transformed safe
 // for traversing during GC.
 // The unused part of the transformed object is marked as an TypedDataInt8Array
 // object.
 void Object::MakeUnusedSpaceTraversable(const Object& obj,
                                         intptr_t original_size,
                                         intptr_t used_size) {
-  ASSERT(Isolate::Current()->no_safepoint_scope_depth() > 0);
+  ASSERT(Thread::Current()->no_safepoint_scope_depth() > 0);
   ASSERT(!obj.IsNull());
   ASSERT(original_size >= used_size);
   if (original_size > used_size) {
     intptr_t leftover_size = original_size - used_size;
 
     uword addr = RawObject::ToAddr(obj.raw()) + used_size;
     if (leftover_size >= TypedData::InstanceSize(0)) {
       // Update the leftover space as a TypedDataInt8Array object.
       RawTypedData* raw =
           reinterpret_cast<RawTypedData*>(RawObject::FromAddr(addr));
@@ skipping 13381 matching lines @@
     return Integer::Cast(*this).Equals(other);
   }
   if (IsDouble() && other.IsDouble()) {
     return Double::Cast(*this).CanonicalizeEquals(other);
   }
   return false;
 }
 
 
 intptr_t* Instance::NativeFieldsDataAddr() const {
-  ASSERT(Isolate::Current()->no_safepoint_scope_depth() > 0);
+  ASSERT(Thread::Current()->no_safepoint_scope_depth() > 0);
   RawTypedData* native_fields =
       reinterpret_cast<RawTypedData*>(*NativeFieldsAddr());
   if (native_fields == TypedData::null()) {
     return NULL;
   }
   return reinterpret_cast<intptr_t*>(native_fields->ptr()->data());
 }
 
 
 void Instance::SetNativeField(int index, intptr_t value) const {
@@ skipping 128 matching lines @@
   if (IsNull()) {
     return "null";
   } else if (raw() == Object::sentinel().raw()) {
     return "sentinel";
   } else if (raw() == Object::transition_sentinel().raw()) {
     return "transition_sentinel";
   } else if (raw() == Object::unknown_constant().raw()) {
     return "unknown_constant";
   } else if (raw() == Object::non_constant().raw()) {
     return "non_constant";
-  } else if (Isolate::Current()->no_safepoint_scope_depth() > 0) {
+  } else if (Thread::Current()->no_safepoint_scope_depth() > 0) {
     // Can occur when running disassembler.
     return "Instance";
   } else {
     if (IsClosure()) {
       return Closure::ToCString(*this);
     }
     const char* kFormat = "Instance of '%s'";
     const Class& cls = Class::Handle(clazz());
     TypeArguments& type_arguments = TypeArguments::Handle();
     const intptr_t num_type_arguments = cls.NumTypeArguments();
@@ skipping 6746 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart