[futures.shared_future]

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@112990 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03 18:39:25 +00:00
parent ae153b9855
commit 99be8237db
13 changed files with 1077 additions and 2 deletions
--- a/src/future.cpp
+++ b/src/future.cpp
@@ -240,4 +240,21 @@ promise<void>::set_exception_at_thread_exit(exception_ptr __p)
    __state_->set_exception_at_thread_exit(__p);
 }

+shared_future<void>::~shared_future()
+{
+    if (__state_)
+        __state_->__release_shared();
+}
+
+shared_future<void>&
+shared_future<void>::operator=(const shared_future& __rhs)
+{
+    if (__rhs.__state_)
+        __rhs.__state_->__add_shared();
+    if (__state_)
+        __state_->__release_shared();
+    __state_ = __rhs.__state_;
+    return *this;
+}
+
 _LIBCPP_END_NAMESPACE_STD