[Isolates] RegExpStack and memory allocation limits (statics #6)

src/regexp-stack.cc

Index: src/regexp-stack.cc
===================================================================
--- src/regexp-stack.cc	(revision 5002)
+++ src/regexp-stack.cc	(working copy)
@@ -31,18 +31,29 @@
 namespace v8 {
 namespace internal {
 
-RegExpStack::RegExpStack() {
+RegExpStackScope::RegExpStackScope(Isolate* isolate)
+    : regexp_stack_(isolate->regexp_stack()) {
   // Initialize, if not already initialized.
-  RegExpStack::EnsureCapacity(0);
+  regexp_stack_->EnsureCapacity(0);
 }
 
 
-RegExpStack::~RegExpStack() {
+RegExpStackScope::~RegExpStackScope() {
+  ASSERT(Isolate::Current() == regexp_stack_->isolate_);
   // Reset the buffer if it has grown.
-  RegExpStack::Reset();
+  regexp_stack_->Reset();
 }
 
 
+RegExpStack::RegExpStack()
+    : isolate_(NULL) {
+}
+
+
+RegExpStack::~RegExpStack() {
+}
+
+
 char* RegExpStack::ArchiveStack(char* to) {
   size_t size = sizeof(thread_local_);
   memcpy(reinterpret_cast<void*>(to),
@@ -69,9 +80,9 @@
 
 
 void RegExpStack::ThreadLocal::Free() {
-  if (thread_local_.memory_size_ > 0) {
-    DeleteArray(thread_local_.memory_);
-    thread_local_ = ThreadLocal();
+  if (memory_size_ > 0) {
+    DeleteArray(memory_);
+    Clear();
   }
 }
 
@@ -97,6 +108,4 @@
 }
 
 
-RegExpStack::ThreadLocal RegExpStack::thread_local_;
-
 }}  // namespace v8::internal