1 // Copyright 2019 The Abseil Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //      https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 #include "absl/status/status_payload_printer.h"
15 
16 #include <atomic>
17 
18 #include "absl/base/attributes.h"
19 
20 namespace absl {
21 ABSL_NAMESPACE_BEGIN
22 namespace status_internal {
23 
24 namespace {
25 // Tried constant initialized global variable but it doesn't work with Lexan
26 // (MSVC's `std::atomic` has trouble constant initializing).
GetStatusPayloadPrinterStorage()27 std::atomic<StatusPayloadPrinter>& GetStatusPayloadPrinterStorage() {
28   ABSL_CONST_INIT static std::atomic<StatusPayloadPrinter> instance{nullptr};
29   return instance;
30 }
31 }  // namespace
32 
SetStatusPayloadPrinter(StatusPayloadPrinter printer)33 void SetStatusPayloadPrinter(StatusPayloadPrinter printer) {
34   GetStatusPayloadPrinterStorage().store(printer, std::memory_order_relaxed);
35 }
36 
GetStatusPayloadPrinter()37 StatusPayloadPrinter GetStatusPayloadPrinter() {
38   return GetStatusPayloadPrinterStorage().load(std::memory_order_relaxed);
39 }
40 
41 }  // namespace status_internal
42 ABSL_NAMESPACE_END
43 }  // namespace absl
44