Treat weak references in context weakly in write barrier.

src/contexts.cc

Index: src/contexts.cc
diff --git a/src/contexts.cc b/src/contexts.cc
index 12eb871e15ddbe5eb9acb67acb4485fcec01c258..b7617f746761e7edbeadde1c938febda64f71ed4 100644
--- a/src/contexts.cc
+++ b/src/contexts.cc
@@ -395,7 +395,7 @@ void Context::AddOptimizedFunction(JSFunction* function) {
   DCHECK(function->next_function_link()->IsUndefined());
 
   function->set_next_function_link(get(OPTIMIZED_FUNCTIONS_LIST));

[ulan, 2015/05/27 13:35:51]

set_next_function_link should be weak too. Is this left for next CL?

[Hannes Payer (out of office), 2015/05/27 13:48:59]

Next CL together with the other weak next function references.

-  set(OPTIMIZED_FUNCTIONS_LIST, function);
+  set(OPTIMIZED_FUNCTIONS_LIST, function, UPDATE_WEAK_WRITE_BARRIER);
 }
 
 
@@ -409,7 +409,8 @@ void Context::RemoveOptimizedFunction(JSFunction* function) {
            element_function->next_function_link()->IsJSFunction());
     if (element_function == function) {
       if (prev == NULL) {
-        set(OPTIMIZED_FUNCTIONS_LIST, element_function->next_function_link());
+        set(OPTIMIZED_FUNCTIONS_LIST, element_function->next_function_link(),
+            UPDATE_WEAK_WRITE_BARRIER);
       } else {
         prev->set_next_function_link(element_function->next_function_link());
       }
@@ -425,7 +426,7 @@ void Context::RemoveOptimizedFunction(JSFunction* function) {
 
 void Context::SetOptimizedFunctionsListHead(Object* head) {
   DCHECK(IsNativeContext());
-  set(OPTIMIZED_FUNCTIONS_LIST, head);
+  set(OPTIMIZED_FUNCTIONS_LIST, head, UPDATE_WEAK_WRITE_BARRIER);
 }
 
 
@@ -440,13 +441,13 @@ void Context::AddOptimizedCode(Code* code) {
   DCHECK(code->kind() == Code::OPTIMIZED_FUNCTION);
   DCHECK(code->next_code_link()->IsUndefined());
   code->set_next_code_link(get(OPTIMIZED_CODE_LIST));
-  set(OPTIMIZED_CODE_LIST, code);
+  set(OPTIMIZED_CODE_LIST, code, UPDATE_WEAK_WRITE_BARRIER);
 }
 
 
 void Context::SetOptimizedCodeListHead(Object* head) {
   DCHECK(IsNativeContext());
-  set(OPTIMIZED_CODE_LIST, head);
+  set(OPTIMIZED_CODE_LIST, head, UPDATE_WEAK_WRITE_BARRIER);
 }
 
 
@@ -458,7 +459,7 @@ Object* Context::OptimizedCodeListHead() {
 
 void Context::SetDeoptimizedCodeListHead(Object* head) {
   DCHECK(IsNativeContext());
-  set(DEOPTIMIZED_CODE_LIST, head);
+  set(DEOPTIMIZED_CODE_LIST, head, UPDATE_WEAK_WRITE_BARRIER);
 }