src/share/vm/prims/jvmtiEnvBase.hpp

@@ -332,11 +332,63 @@
   }
   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;