commit 1b2279d6b5118fc00bc028340d14fe1e345a4ab4
author Akira TAGOH <akira@tagoh.org> Fri Nov 24 10:53:39 2017 +0530
committer Akira TAGOH <akira@tagoh.org> Fri Nov 24 10:53:39 2017 +0530
tree ff1b5a797b7071830267842bc26ef3c17445bfc1
parent 4758144492cf694b9d762733bc0907c0dad5b34d

thread-safe functions in fchash.c

src/fchash.c

diff --git a/src/fchash.c b/src/fchash.c
index 7a320d5..9857abc 100644
--- a/src/fchash.c
+++ b/src/fchash.c
@@ -169,13 +169,15 @@
 
 	return !ret;
     }
+  retry:
     for (prev = &table->buckets[hash % FC_HASH_SIZE];
-	 (b = *prev); prev = &(b->next))
+	 (b = fc_atomic_ptr_get (prev)); prev = &(b->next))
     {
 	if (!table->compare_func (bucket->key, key))
 	    goto destroy;
     }
-    *prev = bucket;
+    if (!fc_atomic_ptr_cmpexch (prev, b, bucket))
+	goto retry;
 
     return FcTrue;
 }