refactor rpc code

source/libs/transport/inc/transComm.h

@@ -317,6 +317,11 @@ typedef struct STransReq {
   void* data;
 } STransReq;
 
+void  transReqQueueInit(queue* q);
+void* transReqQueuePushReq(queue* q);
+void* transReqQueueRemove(void* arg);
+void  transReqQueueClear(queue* q);
+
 // queue sending msgs
 typedef struct {
   SArray* q;

source/libs/transport/src/transCli.c

@@ -19,7 +19,7 @@ typedef struct SCliConn {
   T_REF_DECLARE()
   uv_connect_t connReq;
   uv_stream_t* stream;
-  uv_write_t   writeReq;
+  queue        wreqQueue;
 
   void* hostThrd;
 
@@ -586,9 +586,10 @@ static SCliConn* cliCreateConn(SCliThrd* pThrd) {
   uv_tcp_init(pThrd->loop, (uv_tcp_t*)(conn->stream));
   conn->stream->data = conn;
 
-  conn->writeReq.data = conn;
   conn->connReq.data = conn;
 
+  transReqQueueInit(&conn->wreqQueue);
+
   transQueueInit(&conn->cliMsgs, NULL);
   QUEUE_INIT(&conn->conn);
   conn->hostThrd = pThrd;
@@ -627,6 +628,8 @@ static void cliDestroy(uv_handle_t* handle) {
   transCtxCleanup(&conn->ctx);
   transQueueDestroy(&conn->cliMsgs);
   tTrace("%s conn %p destroy successfully", CONN_GET_INST_LABEL(conn), conn);
+  transReqQueueClear(&conn->wreqQueue);
+
   transDestroyBuffer(&conn->readBuf);
   taosMemoryFree(conn);
 }
@@ -649,11 +652,8 @@ static bool cliHandleNoResp(SCliConn* conn) {
   return res;
 }
 static void cliSendCb(uv_write_t* req, int status) {
-  SCliConn* pConn = req && req->handle ? req->handle->data : NULL;
-  taosMemoryFree(req);
-  if (pConn == NULL) {
-    return;
-  }
+  SCliConn* pConn = transReqQueueRemove(req);
+  if (pConn == NULL) return;
 
   if (status == 0) {
     tTrace("%s conn %p data already was written out", CONN_GET_INST_LABEL(pConn), pConn);
@@ -711,7 +711,7 @@ void cliSend(SCliConn* pConn) {
     CONN_SET_PERSIST_BY_APP(pConn);
   }
 
-  uv_write_t* req = taosMemoryCalloc(1, sizeof(uv_write_t));
+  uv_write_t* req = transReqQueuePushReq(&pConn->wreqQueue);
   uv_write(req, (uv_stream_t*)pConn->stream, &wb, 1, cliSendCb);
   return;
 _RETURN:

source/libs/transport/src/transComm.c

@@ -293,6 +293,48 @@ void* transCtxDumpBrokenlinkVal(STransCtx* ctx, int32_t* msgType) {
   return ret;
 }
 
+void transReqQueueInit(queue* q) {
+  // init  req queue
+  QUEUE_INIT(q);
+}
+void* transReqQueuePushReq(queue* q) {
+  uv_write_t* req = taosMemoryCalloc(1, sizeof(uv_write_t));
+  STransReq*  wreq = taosMemoryCalloc(1, sizeof(STransReq));
+  wreq->data = req;
+  req->data = wreq;
+  QUEUE_PUSH(q, &wreq->q);
+  return req;
+}
+void* transReqQueueRemove(void* arg) {
+  void*       ret = NULL;
+  uv_write_t* req = arg;
+  STransReq*  wreq = req && req->data ? req->data : NULL;
+
+  assert(wreq->data == req);
+  if (wreq == NULL || wreq->data == NULL) {
+    taosMemoryFree(wreq->data);
+    taosMemoryFree(wreq);
+    return req;
+  }
+
+  QUEUE_REMOVE(&wreq->q);
+
+  ret = req && req->handle ? req->handle->data : NULL;
+  taosMemoryFree(wreq->data);
+  taosMemoryFree(wreq);
+
+  return ret;
+}
+void transReqQueueClear(queue* q) {
+  while (!QUEUE_IS_EMPTY(q)) {
+    queue* h = QUEUE_HEAD(q);
+    QUEUE_REMOVE(h);
+    STransReq* req = QUEUE_DATA(h, STransReq, q);
+    taosMemoryFree(req->data);
+    taosMemoryFree(req);
+  }
+}
+
 void transQueueInit(STransQueue* queue, void (*freeFunc)(const void* arg)) {
   queue->q = taosArrayInit(2, sizeof(void*));
   queue->freeFunc = (void (*)(const void*))freeFunc;

source/libs/transport/src/transSvr.c

@@ -331,14 +331,7 @@ void uvOnTimeoutCb(uv_timer_t* handle) {
 }
 
 void uvOnSendCb(uv_write_t* req, int status) {
-  STransReq* wreq = req && req->data ? req->data : NULL;
-  SSvrConn*  conn = req && req->handle ? req->handle->data : NULL;
-  if (wreq != NULL && conn != NULL) {
-    QUEUE_REMOVE(&wreq->q);
-    taosMemoryFree(wreq->data);
-    taosMemoryFree(wreq);
-  }
-
+  SSvrConn* conn = transReqQueueRemove(req);
   if (conn == NULL) return;
 
   if (status == 0) {
@@ -442,12 +435,7 @@ static void uvStartSendRespInternal(SSvrMsg* smsg) {
 
   transRefSrvHandle(pConn);
 
-  uv_write_t* req = taosMemoryCalloc(1, sizeof(uv_write_t));
-  STransReq*  wreq = taosMemoryCalloc(1, sizeof(STransReq));
-  wreq->data = req;
-  req->data = wreq;
-  QUEUE_PUSH(&pConn->wreqQueue, &wreq->q);
-
+  uv_write_t* req = transReqQueuePushReq(&pConn->wreqQueue);
   uv_write(req, (uv_stream_t*)pConn->pTcp, &wb, 1, uvOnSendCb);
 }
 static void uvStartSendResp(SSvrMsg* smsg) {
@@ -757,7 +745,7 @@ static SSvrConn* createConn(void* hThrd) {
 
   SSvrConn* pConn = (SSvrConn*)taosMemoryCalloc(1, sizeof(SSvrConn));
 
-  QUEUE_INIT(&pConn->wreqQueue);
+  transReqQueueInit(&pConn->wreqQueue);
   QUEUE_INIT(&pConn->queue);
 
   QUEUE_PUSH(&pThrd->conn, &pConn->queue);
@@ -834,13 +822,7 @@ static void uvDestroyConn(uv_handle_t* handle) {
     destroySmsg(msg);
   }
 
-  while (!QUEUE_IS_EMPTY(&conn->wreqQueue)) {
-    queue* h = QUEUE_HEAD(&conn->wreqQueue);
-    QUEUE_REMOVE(h);
-    STransReq* req = QUEUE_DATA(h, STransReq, q);
-    taosMemoryFree(req->data);
-    taosMemoryFree(req);
-  }
+  transReqQueueClear(&conn->wreqQueue);
   transQueueDestroy(&conn->srvMsgs);
 
   QUEUE_REMOVE(&conn->queue);