Merge pull request #4218 from taosdata/patch/TD-2079

taosAcquireRef return a pointer, not an integer

src/sync/src/syncMain.c

@@ -1108,7 +1108,7 @@ static void syncProcessBrokenLink(void *param) {
   SSyncPeer *pPeer = param;
   SSyncNode *pNode = pPeer->pSyncNode;
 
-  if (taosAcquireRef(tsSyncRefId, pNode->rid) < 0) return;
+  if (taosAcquireRef(tsSyncRefId, pNode->rid) == NULL) return;
   pthread_mutex_lock(&(pNode->mutex));
 
   sDebug("%s, TCP link is broken(%s)", pPeer->id, strerror(errno));

src/util/tests/trefTest.c

@@ -77,8 +77,8 @@ void *acquireRelease(void *param) {
     printf("a");
     
     id = random() % pSpace->refNum; 
-    code = taosAcquireRef(pSpace->rsetId, pSpace->p[id]);
-    if (code >= 0) {
+    void *p = taosAcquireRef(pSpace->rsetId, pSpace->p[id]);
+    if (p) {
       usleep(id % 5 + 1);
       taosReleaseRef(pSpace->rsetId, pSpace->p[id]);
     }