spinlock: prefer weak xchg when spinning

2018-03-15 23:48:50 +11:00 · 2018-03-15 23:48:50 +11:00 · e1d87afe37
commit e1d87afe37
parent 12d401b98b
1 changed files with 1 additions and 1 deletions
--- a/job/spinlock.cpp
+++ b/job/spinlock.cpp
@ -39,7 +39,7 @@ spinlock::lock (void)
 {
    do {
        bool expected = false;
-        if (held.compare_exchange_strong (expected, true))
+        if (held.compare_exchange_weak (expected, true))
            return;

        while (held)