src/share/vm/prims/jvmtiEnvBase.hpp

*** 332,342 ****
--- 332,394 ----
    }
    JvmtiEnv* first()                 { return JvmtiEnvBase::head_environment(); }
    JvmtiEnv* next(JvmtiEnvBase* env) { return env->next_environment(); }
  };
  
+ // VM operation to update for pop top frame.
+ class VM_UpdateForPopTopFrame : public VM_Operation {
+ private:
+   JvmtiThreadState* _state;
+   jvmtiError _result;
  
+ public:
+   VM_UpdateForPopTopFrame(JvmtiThreadState* state) {
+     _state = state;
+     _result = JVMTI_ERROR_NONE;
+   }
+   VMOp_Type type() const { return VMOp_UpdateForPopTopFrame; }
+   jvmtiError result() { return _result; }
+   void doit() {
+     JavaThread* jt = _state->get_thread();
+     if (Threads::includes(jt) && !jt->is_exiting() && jt->threadObj() != NULL) {
+       _state->update_for_pop_top_frame();
+     } else {
+       _result = JVMTI_ERROR_THREAD_NOT_ALIVE;
+     }
+   }
+ };
+ 
+ // VM operation to set frame pop.
+ class VM_SetFramePop : public VM_Operation {
+ private:
+   JvmtiEnv *_env;
+   JvmtiThreadState* _state;
+   jint _depth;
+   jvmtiError _result;
+ 
+ public:
+   VM_SetFramePop(JvmtiEnv *env, JvmtiThreadState* state, jint depth) {
+     _env = env;
+     _state = state;
+     _depth = depth;
+     _result = JVMTI_ERROR_NONE;
+   }
+   bool allow_nested_vm_operations() const        { return true; }
+   VMOp_Type type() const { return VMOp_SetFramePop; }
+   jvmtiError result() { return _result; }
+   void doit() {
+     JavaThread* jt = _state->get_thread();
+     if (Threads::includes(jt) && !jt->is_exiting() && jt->threadObj() != NULL) {
+       int frame_number = _state->count_frames() - _depth;
+       _state->env_thread_state((JvmtiEnvBase*)_env)->set_frame_pop(frame_number);
+     } else {
+       _result = JVMTI_ERROR_THREAD_NOT_ALIVE;
+     }
+   }
+ };
+ 
+ 
  // VM operation to get monitor information with stack depth.
  class VM_GetOwnedMonitorInfo : public VM_Operation {
  private:
    JvmtiEnv *_env;
    JavaThread* _calling_thread;