Fix copyright lines

[folly.git] / folly / init / Init.h

diff --git a/folly/init/Init.h b/folly/init/Init.h
index 8c1bc7e535f63a30973001bfdf11e08f5b8f437b..56e0b93fd408f193b520f68352357bdb824470a0 100644 (file)
--- a/folly/init/Init.h
+++ b/folly/init/Init.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2016-present Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,8 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef INIT_LIGHT_BASE_H
-#define INIT_LIGHT_BASE_H
+
+#pragma once
+
+#include <folly/CPortability.h>
 
 /*
  * Calls common init functions in the necessary order
@@ -30,6 +32,23 @@ namespace folly {
 
 void init(int* argc, char*** argv, bool removeFlags = true);
 
-} // folly
+/*
+ * An RAII object to be constructed at the beginning of main() and destructed
+ * implicitly at the end of main().
+ *
+ * The constructor performs the same setup as folly::init(), including
+ * initializing singletons managed by folly::Singleton.
+ *
+ * The destructor destroys all singletons managed by folly::Singleton, yielding
+ * better shutdown behavior when performed at the end of main(). In particular,
+ * this guarantees that all singletons managed by folly::Singleton are destroyed
+ * before all Meyers singletons are destroyed.
+ */
+class Init {
+ public:
+  // Force ctor & dtor out of line for better stack traces even with LTO.
+  FOLLY_NOINLINE Init(int* argc, char*** argv, bool removeFlags = true);
+  FOLLY_NOINLINE ~Init();
+};
 
-#endif
+} // namespace folly