Revert "SERVER-7617 Enter and Exit our scope's Isolate in V8"

This reverts commit a2e429d.

Author: Tad Marshall

src/mongo/scripting/engine.cpp

@@ -287,7 +287,6 @@ namespace mongo {
             scoped_lock lk( _mutex );
             list<Scope*> & l = _pools[pool];
             bool oom = s->hasOutOfMemoryException();
-            s->exit();
 
             // do not keep too many contexts, or use them for too long
             if ( l.size() > 10 || s->getTimeUsed() > 10 || oom ) {
@@ -315,7 +314,6 @@ namespace mongo {
             l.pop_back();
             s->reset();
             s->incTimeUsed();
-            s->enter();
             return s;
         }
 
@@ -357,7 +355,6 @@ namespace mongo {
                 // this means that the Scope was killed from a different thread
                 // for example a cursor got timed out that has a $where clause
                 LOG(3) << "warning: scopeCache is empty!" << endl;
-                _real->exit();
                 delete _real;
                 _real = 0;
             }
@@ -476,7 +473,6 @@ namespace mongo {
         Scope * s = scopeCache->get( pool );
         if ( ! s ) {
             s = newScope();
-            s->enter();
         }
 
         auto_ptr<Scope> p;

src/mongo/scripting/engine.h

@@ -34,8 +34,6 @@ namespace mongo {
         Scope();
         virtual ~Scope();
 
-        virtual void enter() {}
-        virtual void exit() {}
         virtual void reset() = 0;
         virtual void init( const BSONObj * data ) = 0;
         void init( const char * data ) {

src/mongo/scripting/engine_v8.cpp

@@ -496,14 +496,6 @@ namespace mongo {
         _isolate->Dispose();
     }
 
-    void V8Scope::enter() {
-        _isolate->Enter();
-    }
-
-    void V8Scope::exit() {
-        _isolate->Exit();
-    }
-
     bool V8Scope::hasOutOfMemoryException() {
         if (!_context.IsEmpty())
             return _context->HasOutOfMemoryException();

src/mongo/scripting/engine_v8.h

@@ -97,8 +97,6 @@ namespace mongo {
         V8Scope( V8ScriptEngine * engine );
         ~V8Scope();
 
-        virtual void enter();
-        virtual void exit();
         virtual void reset();
         virtual void init( const BSONObj * data );