Changeset 5b7a3662 for libcfa/src/concurrency/kernel.cfa

Timestamp:

Jan 10, 2022, 7:11:25 PM (2 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, ast-experimental, enum, forall-pointer-decay, master, pthread-emulation, qualifiedEnum

Children:

9b33337

Parents:

418d31ac

Message:

Tentative optimization for wake-one

File:

• libcfa/src/concurrency/kernel.cfa (modified) (1 diff)

libcfa/src/concurrency/kernel.cfa

@@ -736 +736 @@
 
         // Check if there is a sleeping processor
-        int fd = __atomic_load_n(&this->procs.fd, __ATOMIC_SEQ_CST);
+        // int fd = __atomic_load_n(&this->procs.fd, __ATOMIC_SEQ_CST);
+        int fd = 0;
+        if( __atomic_load_n(&this->procs.fd, __ATOMIC_SEQ_CST) != 0 ) {
+                fd = __atomic_exchange_n(&this->procs.fd, 0, __ATOMIC_RELAXED);
+        }
 
         // If no one is sleeping, we are done