>From 7e7c3a20d08831cd64b77a4e8d8f693b4725ef89 Mon Sep 17 00:00:00 2001
From: Akira Yokosawa <akiyks@xxxxxxxxx>
Date: Tue, 11 Dec 2018 21:37:11 +0900
Subject: [PATCH 3/4] CodeSamples: Fix definition of cmpxchg() in api-gcc.h
Do the same change as CodeSamples/formal/litmus/api.h.
Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
---
CodeSamples/api-pthreads/api-gcc.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/CodeSamples/api-pthreads/api-gcc.h b/CodeSamples/api-pthreads/api-gcc.h
index 3afe340..b66f4b9 100644
--- a/CodeSamples/api-pthreads/api-gcc.h
+++ b/CodeSamples/api-pthreads/api-gcc.h
@@ -168,8 +168,9 @@ struct __xchg_dummy {
({ \
typeof(*ptr) _____actual = (o); \
\
- __atomic_compare_exchange_n(ptr, (void *)&_____actual, (n), 1, \
- __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? (o) : (o)+1; \
+ __atomic_compare_exchange_n((ptr), (void *)&_____actual, (n), 0, \
+ __ATOMIC_SEQ_CST, __ATOMIC_RELAXED); \
+ _____actual; \
})
static __inline__ int atomic_cmpxchg(atomic_t *v, int old, int new)
--
2.7.4
