Background compilation work:

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 2870 matching lines @@
   const Class& cls_;
   DISALLOW_COPY_AND_ASSIGN(CHACodeArray);
 };
 
 
 void Class::RegisterCHACode(const Code& code) {
   if (FLAG_trace_cha) {
     THR_Print("RegisterCHACode %s class %s\n",
         Function::Handle(code.function()).ToQualifiedCString(), ToCString());
   }
+  ASSERT(Thread::Current()->IsMutatorThread());
   ASSERT(code.is_optimized());
   CHACodeArray a(*this);
   a.Register(code);
 }
 
 
 void Class::DisableCHAOptimizedCode() {
+  ASSERT(Thread::Current()->IsMutatorThread());
   CHACodeArray a(*this);
   a.DisableCode();
 }
 
 
 bool Class::TraceAllocation(Isolate* isolate) const {
   ClassTable* class_table = isolate->class_table();
   return class_table->TraceAllocationFor(id());
 }
 
@@ skipping 2438 matching lines @@
 }
 
 
 bool Function::HasBreakpoint() const {
   Thread* thread = Thread::Current();
   return thread->isolate()->debugger()->HasBreakpoint(*this, thread->zone());
 }
 
 
 void Function::InstallOptimizedCode(const Code& code, bool is_osr) const {
+  ASSERT(Thread::Current()->IsMutatorThread());
   // We may not have previous code if 'always_optimize' is set.
   if (!is_osr && HasCode()) {
     Code::Handle(CurrentCode()).DisableDartCode();
   }
   AttachCode(code);
 }
 
 
 void Function::SetInstructions(const Code& value) const {
   ASSERT(Thread::Current()->IsMutatorThread());
   SetInstructionsSafe(value);
 }
 
 
 void Function::SetInstructionsSafe(const Code& value) const {
   StorePointer(&raw_ptr()->code_, value.raw());
   StoreNonPointer(&raw_ptr()->entry_point_, value.EntryPoint());
 }
 
 
 void Function::AttachCode(const Code& value) const {
+  ASSERT(Thread::Current()->IsMutatorThread());
   // Finish setting up code before activating it.
   value.set_owner(*this);
   SetInstructions(value);
   ASSERT(Function::Handle(value.function()).IsNull() ||
       (value.function() == this->raw()));
 }
 
 
 bool Function::HasCode() const {
   ASSERT(raw_ptr()->code_ != Code::null());
   return raw_ptr()->code_ != StubCode::LazyCompile_entry()->code();
 }
 
 
 void Function::ClearCode() const {
+  ASSERT(Thread::Current()->IsMutatorThread());
   ASSERT((usage_counter() != 0) || (ic_data_array() == Array::null()));
   StorePointer(&raw_ptr()->unoptimized_code_, Code::null());
   SetInstructions(Code::Handle(StubCode::LazyCompile_entry()->code()));
 }
 
 
 void Function::SwitchToUnoptimizedCode() const {
   ASSERT(HasOptimizedCode());
   Thread* thread = Thread::Current();
   Isolate* isolate = thread->isolate();
   Zone* zone = thread->zone();
+  ASSERT(thread->IsMutatorThread());
   const Code& current_code = Code::Handle(zone, CurrentCode());
 
   if (FLAG_trace_deoptimization_verbose) {
     THR_Print("Disabling optimized code: '%s' entry: %#" Px "\n",
       ToFullyQualifiedCString(),
       current_code.EntryPoint());
   }
   current_code.DisableDartCode();
   const Error& error = Error::Handle(zone,
       Compiler::EnsureUnoptimizedCode(thread, *this));
   if (!error.IsNull()) {
     Exceptions::PropagateError(error);
   }
   const Code& unopt_code = Code::Handle(zone, unoptimized_code());
   AttachCode(unopt_code);
   unopt_code.Enable();
   isolate->TrackDeoptimizedCode(current_code);
 }
 
 
 void Function::set_unoptimized_code(const Code& value) const {
+  ASSERT(Thread::Current()->IsMutatorThread());
   ASSERT(value.IsNull() || !value.is_optimized());
   StorePointer(&raw_ptr()->unoptimized_code_, value.raw());
 }
 
 
 RawContextScope* Function::context_scope() const {
   if (IsClosureFunction()) {
     const Object& obj = Object::Handle(raw_ptr()->data_);
     ASSERT(!obj.IsNull());
     return ClosureData::Cast(obj).context_scope();
@@ skipping 2324 matching lines @@
     Isolate::Current()->IncrFieldInvalidationGen();
   }
 
  private:
   const Field& field_;
   DISALLOW_COPY_AND_ASSIGN(FieldDependentArray);
 };
 
 
 void Field::RegisterDependentCode(const Code& code) const {
+  ASSERT(Thread::Current()->IsMutatorThread());
   ASSERT(code.is_optimized());
   FieldDependentArray a(*this);
   a.Register(code);
 }
 
 
 void Field::DeoptimizeDependentCode() const {
+  ASSERT(Thread::Current()->IsMutatorThread());
   FieldDependentArray a(*this);
   a.DisableCode();
 }
 
 
 bool Field::IsUninitialized() const {
   const Instance& value = Instance::Handle(raw_ptr()->value_.static_value_);
   ASSERT(value.raw() != Object::transition_sentinel().raw());
   return value.raw() == Object::sentinel().raw();
 }
@@ skipping 5762 matching lines @@
 }
 
 
 bool Code::IsFunctionCode() const {
   const Object& obj = Object::Handle(owner());
   return obj.IsFunction();
 }
 
 
 void Code::DisableDartCode() const {
+  ASSERT(Thread::Current()->IsMutatorThread());
   ASSERT(IsFunctionCode());
   ASSERT(instructions() == active_instructions());
   const Code& new_code =
       Code::Handle(StubCode::FixCallersTarget_entry()->code());
   set_active_instructions(new_code.instructions());
 }
 
 
 void Code::DisableStubCode() const {
-ASSERT(IsAllocationStubCode());
+  ASSERT(Thread::Current()->IsMutatorThread());
+  ASSERT(IsAllocationStubCode());
   ASSERT(instructions() == active_instructions());
   const Code& new_code =
       Code::Handle(StubCode::FixAllocationStubTarget_entry()->code());
   set_active_instructions(new_code.instructions());
 }
 
 
 void Code::PrintJSONImpl(JSONStream* stream, bool ref) const {
   JSONObject jsobj(stream);
   AddCommonObjectProperties(&jsobj, "Code", ref);
@@ skipping 8304 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart