once.h

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// Protocol Buffers - Google's data interchange format
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#ifndef GOOGLE_PROTOBUF_STUBS_ONCE_H__
#define GOOGLE_PROTOBUF_STUBS_ONCE_H__
 
#include <mutex>
#include <utility>
 
#include <google/protobuf/port_def.inc>
 
namespace google {
namespace protobuf {
namespace internal {
 
using once_flag = std::once_flag;
template <typename... Args>
void call_once(Args&&... args ) {
  std::call_once(std::forward<Args>(args)...);
}
 
}  // namespace internal
}  // namespace protobuf
}  // namespace google
 
#include <google/protobuf/port_undef.inc>
 
#endif  // GOOGLE_PROTOBUF_STUBS_ONCE_H__