39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
|
//
|
||
|
|
// Copyright 2019 The Abseil Authors.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
#include "absl/flags/flag.h"
|
||
|
|
|
||
|
|
#include "absl/base/config.h"
|
||
|
|
|
||
|
|
namespace absl {
|
||
|
|
ABSL_NAMESPACE_BEGIN
|
||
|
|
|
||
|
|
// This global mutex protects on-demand construction of flag objects in MSVC
|
||
|
|
// builds.
|
||
|
|
#if defined(_MSC_VER) && !defined(__clang__)
|
||
|
|
|
||
|
|
namespace flags_internal {
|
||
|
|
|
||
|
|
ABSL_CONST_INIT static absl::Mutex construction_guard(absl::kConstInit);
|
||
|
|
|
||
|
|
absl::Mutex* GetGlobalConstructionGuard() { return &construction_guard; }
|
||
|
|
|
||
|
|
} // namespace flags_internal
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
ABSL_NAMESPACE_END
|
||
|
|
} // namespace absl
|