示例#1
0
 ~promise_base() {
     if ( future_) {
         future_->owner_destroyed();
     }
 }
 ~packaged_task() {
     if ( task_) {
         task_->owner_destroyed();
     }
 }
示例#3
0
 ~promise_base() {
     if ( future_ && obtained_) {
         future_->owner_destroyed();
     }
 }