Revert "JumpToFrame refactor"

runtime/vm/thread.cc

 // Copyright (c) 2015, 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/thread.h"
 
 #include "vm/compiler_stats.h"
 #include "vm/dart_api_state.h"
 #include "vm/growable_array.h"
 #include "vm/isolate.h"
@@ skipping 75 matching lines @@
       reusable_handles_(),
       saved_stack_limit_(0),
       defer_oob_messages_count_(0),
       deferred_interrupts_mask_(0),
       deferred_interrupts_(0),
       stack_overflow_count_(0),
       cha_(NULL),
       type_range_cache_(NULL),
       deopt_id_(0),
       pending_functions_(GrowableObjectArray::null()),
-      active_exception_(Object::null()),
-      active_stacktrace_(Object::null()),
-      resume_pc_(0),
       sticky_error_(Error::null()),
       compiler_stats_(NULL),
       REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_INITIALIZERS)
           REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_SCOPE_INIT) safepoint_state_(0),
       execution_state_(kThreadInNative),
       next_(NULL) {
 #if !defined(PRODUCT)
   dart_stream_ = Timeline::GetDartStream();
   ASSERT(dart_stream_ != NULL);
 #endif
@@ skipping 102 matching lines @@
   }
   return pending_functions_;
 }
 
 
 void Thread::clear_pending_functions() {
   pending_functions_ = GrowableObjectArray::null();
 }
 
 
-void Thread::set_active_exception(const Object& value) {
-  ASSERT(!value.IsNull());
-  active_exception_ = value.raw();
-}
-
-
-void Thread::set_active_stacktrace(const Object& value) {
-  active_stacktrace_ = value.raw();
-}
-
-
 RawError* Thread::sticky_error() const {
   return sticky_error_;
 }
 
 
 void Thread::set_sticky_error(const Error& value) {
   ASSERT(!value.IsNull());
   sticky_error_ = value.raw();
 }
 
@@ skipping 371 matching lines @@
   ASSERT(visitor != NULL);
 
   if (zone_ != NULL) {
     zone_->VisitObjectPointers(visitor);
   }
 
   // Visit objects in thread specific handles area.
   reusable_handles_.VisitObjectPointers(visitor);
 
   visitor->VisitPointer(reinterpret_cast<RawObject**>(&pending_functions_));
-  visitor->VisitPointer(reinterpret_cast<RawObject**>(&active_exception_));
-  visitor->VisitPointer(reinterpret_cast<RawObject**>(&active_stacktrace_));
   visitor->VisitPointer(reinterpret_cast<RawObject**>(&sticky_error_));
 
   // Visit the api local scope as it has all the api local handles.
   ApiLocalScope* scope = api_top_scope_;
   while (scope != NULL) {
     scope->local_handles()->VisitObjectPointers(visitor);
     scope = scope->previous();
   }
 
   // Iterate over all the stack frames and visit objects on the stack.
@@ skipping 138 matching lines @@
 
 DisableThreadInterruptsScope::~DisableThreadInterruptsScope() {
   if (thread() != NULL) {
     OSThread* os_thread = thread()->os_thread();
     ASSERT(os_thread != NULL);
     os_thread->EnableThreadInterrupts();
   }
 }
 
 }  // namespace dart