Changeset a18373a for libcfa/src/concurrency/barrier.hfa

Timestamp:

Apr 1, 2022, 2:46:28 PM (3 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, ast-experimental, enum, master, pthread-emulation, qualifiedEnum

Children:

12048a1, 63db8fd7

Parents:

5b7fea7

Message:

Added a hook for the barrier's last block.
Added testing to go with it.

File:

• libcfa/src/concurrency/barrier.hfa (modified) (1 diff)

libcfa/src/concurrency/barrier.hfa

@@ -42 +42 @@
 //      second last thread returns 1
 //      etc.
-static inline unsigned block(barrier & mutex this ) {
+// last is an optional hook that will be called by the last thread
+// before unblocking the others
+static inline unsigned block(barrier & mutex this, fptr_t last = (fptr_t)0 ) {
         this.count -= 1; // prefix decrement so we the last is 0 and not 1
         unsigned arrival = this.count; // Note arrival order
         if(arrival == 0) {
+                if(last) last();
                 // If arrived last unblock everyone and reset
                 signal_all(this.c);