diff options
Diffstat (limited to 'src/google/protobuf/unknown_field_set.cc')
-rw-r--r-- | src/google/protobuf/unknown_field_set.cc | 23 |
1 files changed, 2 insertions, 21 deletions
diff --git a/src/google/protobuf/unknown_field_set.cc b/src/google/protobuf/unknown_field_set.cc index 0ada85e5..35f24e7a 100644 --- a/src/google/protobuf/unknown_field_set.cc +++ b/src/google/protobuf/unknown_field_set.cc @@ -46,28 +46,9 @@ namespace google { namespace protobuf { -namespace { -// This global instance is returned by unknown_fields() on any message class -// when the object has no unknown fields. This is necessary because we now -// instantiate the UnknownFieldSet dynamically only when required. -UnknownFieldSet* default_unknown_field_set_instance_ = NULL; - -void DeleteDefaultUnknownFieldSet() { - delete default_unknown_field_set_instance_; -} - -void InitDefaultUnknownFieldSet() { - default_unknown_field_set_instance_ = new UnknownFieldSet(); - internal::OnShutdown(&DeleteDefaultUnknownFieldSet); -} - -GOOGLE_PROTOBUF_DECLARE_ONCE(default_unknown_field_set_once_init_); -} - const UnknownFieldSet* UnknownFieldSet::default_instance() { - ::google::protobuf::GoogleOnceInit(&default_unknown_field_set_once_init_, - &InitDefaultUnknownFieldSet); - return default_unknown_field_set_instance_; + static auto instance = internal::OnShutdownDelete(new UnknownFieldSet()); + return instance; } void UnknownFieldSet::ClearFallback() { |