Add element construction/destruction hooks to IndexedMemPool

[folly.git] / folly / futures / SharedPromise.h

diff --git a/folly/futures/SharedPromise.h b/folly/futures/SharedPromise.h
index 5041a38ab724bab547fd13413fe481a0d0cd3ab8..51a4a179aa70fb85789fb11e8f57571f1f985696 100644 (file)
--- a/folly/futures/SharedPromise.h
+++ b/folly/futures/SharedPromise.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <folly/futures/Promise.h>
+#include <folly/Portability.h>
 
 namespace folly {
 
@@ -45,8 +46,10 @@ public:
   SharedPromise(SharedPromise<T>&&) noexcept;
   SharedPromise& operator=(SharedPromise<T>&&) noexcept;
 
-  /** Return a Future tied to the shared core state. This can be called only
-    once, thereafter Future already retrieved exception will be raised. */
+  /**
+   * Return a Future tied to the shared core state. Unlike Promise::getFuture,
+   * this can be called an unlimited number of times per SharedPromise.
+   */
   Future<T> getFuture();
 
   /** Return the number of Futures associated with this SharedPromise */
@@ -62,7 +65,8 @@ public:
       p.setException(std::current_exception());
     }
     */
-  void setException(std::exception_ptr const&) DEPRECATED;
+  FOLLY_DEPRECATED("use setException(exception_wrapper)")
+  void setException(std::exception_ptr const&);
 
   /** Fulfill the SharedPromise with an exception type E, which can be passed to
     std::make_exception_ptr(). Useful for originating exceptions. If you
@@ -79,18 +83,11 @@ public:
   /// handled.
   void setInterruptHandler(std::function<void(exception_wrapper const&)>);
 
-  /// Fulfill this SharedPromise<void>
-  template <class B = T>
-  typename std::enable_if<std::is_void<B>::value, void>::type
-  setValue() {
-    set(Try<T>());
-  }
-
   /// Sugar to fulfill this SharedPromise<Unit>
   template <class B = T>
   typename std::enable_if<std::is_same<Unit, B>::value, void>::type
   setValue() {
-    set(Try<T>(T()));
+    setTry(Try<T>(T()));
   }
 
   /** Set the value (use perfect forwarding for both move and copy) */
@@ -108,12 +105,15 @@ public:
   template <class F>
   void setWith(F&& func);
 
+  bool isFulfilled();
+
 private:
   std::mutex mutex_;
   size_t size_{0};
   bool hasValue_{false};
   Try<T> try_;
   std::vector<Promise<T>> promises_;
+  std::function<void(exception_wrapper const&)> interruptHandler_;
 };
 
 }