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-rw-r--r--src/google/protobuf/descriptor.cc31
1 files changed, 28 insertions, 3 deletions
diff --git a/src/google/protobuf/descriptor.cc b/src/google/protobuf/descriptor.cc
index 1aac360b..78a34617 100644
--- a/src/google/protobuf/descriptor.cc
+++ b/src/google/protobuf/descriptor.cc
@@ -560,7 +560,7 @@ class FileDescriptorTables {
~FileDescriptorTables();
// Empty table, used with placeholder files.
- static const FileDescriptorTables kEmpty;
+ inline static const FileDescriptorTables& GetEmptyInstance();
// -----------------------------------------------------------------
// Finding items.
@@ -665,7 +665,32 @@ FileDescriptorTables::FileDescriptorTables()
FileDescriptorTables::~FileDescriptorTables() {}
-const FileDescriptorTables FileDescriptorTables::kEmpty;
+namespace {
+
+FileDescriptorTables* file_descriptor_tables_ = NULL;
+GOOGLE_PROTOBUF_DECLARE_ONCE(file_descriptor_tables_once_init_);
+
+void DeleteFileDescriptorTables() {
+ delete file_descriptor_tables_;
+ file_descriptor_tables_ = NULL;
+}
+
+void InitFileDescriptorTables() {
+ file_descriptor_tables_ = new FileDescriptorTables();
+ internal::OnShutdown(&DeleteFileDescriptorTables);
+}
+
+inline void InitFileDescriptorTablesOnce() {
+ ::google::protobuf::GoogleOnceInit(
+ &file_descriptor_tables_once_init_, &InitFileDescriptorTables);
+}
+
+} // anonymous namespace
+
+inline const FileDescriptorTables& FileDescriptorTables::GetEmptyInstance() {
+ InitFileDescriptorTablesOnce();
+ return *file_descriptor_tables_;
+}
void DescriptorPool::Tables::AddCheckpoint() {
checkpoints_.push_back(CheckPoint(this));
@@ -3537,7 +3562,7 @@ FileDescriptor* DescriptorBuilder::NewPlaceholderFile(
placeholder->package_ = &internal::GetEmptyString();
placeholder->pool_ = pool_;
placeholder->options_ = &FileOptions::default_instance();
- placeholder->tables_ = &FileDescriptorTables::kEmpty;
+ placeholder->tables_ = &FileDescriptorTables::GetEmptyInstance();
placeholder->source_code_info_ = &SourceCodeInfo::default_instance();
placeholder->is_placeholder_ = true;
placeholder->syntax_ = FileDescriptor::SYNTAX_PROTO2;