summaryrefslogtreecommitdiff
path: root/runtime/atomic.h
diff options
context:
space:
mode:
Diffstat (limited to 'runtime/atomic.h')
-rw-r--r--runtime/atomic.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/runtime/atomic.h b/runtime/atomic.h
index 45c3165b18..25dd1a3a5e 100644
--- a/runtime/atomic.h
+++ b/runtime/atomic.h
@@ -257,6 +257,13 @@ class PACKED(sizeof(T)) Atomic : public std::atomic<T> {
return this->compare_exchange_strong(expected_value, desired_value, std::memory_order_relaxed);
}
+ // Atomically replace the value with desired value if it matches the expected value. Prior writes
+ // to other memory locations become visible to the threads that do a consume or an acquire on the
+ // same location.
+ bool CompareExchangeStrongRelease(T expected_value, T desired_value) {
+ return this->compare_exchange_strong(expected_value, desired_value, std::memory_order_release);
+ }
+
// The same, except it may fail spuriously.
bool CompareExchangeWeakRelaxed(T expected_value, T desired_value) {
return this->compare_exchange_weak(expected_value, desired_value, std::memory_order_relaxed);