1/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15
16#ifndef TENSORFLOW_CORE_UTIL_REFFED_STATUS_CALLBACK_H_
17#define TENSORFLOW_CORE_UTIL_REFFED_STATUS_CALLBACK_H_
18
19#include "absl/strings/str_cat.h"
20#include "tensorflow/core/lib/core/refcount.h"
21#include "tensorflow/core/lib/core/status.h"
22#include "tensorflow/core/platform/mutex.h"
23
24namespace tensorflow {
25
26// The ReffedStatusCallback is a refcounted object that accepts a
27// StatusCallback. When it is destroyed (its refcount goes to 0), the
28// StatusCallback is called with the first non-OK status passed to
29// UpdateStatus(), or Status::OK() if no non-OK status was set.
30class ReffedStatusCallback : public core::RefCounted {
31 public:
32 explicit ReffedStatusCallback(StatusCallback done) : done_(std::move(done)) {}
33
34 void UpdateStatus(const Status& s) {
35 mutex_lock lock(mu_);
36 status_group_.Update(s);
37 }
38
39 bool ok() {
40 tf_shared_lock lock(mu_);
41 return status_group_.ok();
42 }
43
44 // Returns a copy of the current status.
45 Status status() {
46 tf_shared_lock lock(mu_);
47 return status_group_.as_summary_status();
48 }
49
50 ~ReffedStatusCallback() { done_(status_group_.as_summary_status()); }
51
52 private:
53 StatusCallback done_;
54 mutex mu_;
55 StatusGroup status_group_ TF_GUARDED_BY(mu_);
56};
57
58} // namespace tensorflow
59
60#endif // TENSORFLOW_CORE_UTIL_REFFED_STATUS_CALLBACK_H_
61