common: use common uv__count_bufs code

Until now it was reimplemented in 2 different places (unix, win).

src/unix/stream.c

@@ -63,18 +63,6 @@ static void uv__stream_io(uv_loop_t* loop, uv__io_t* w, unsigned int events);
 static size_t uv__write_req_size(uv_write_t* req);
 
 
-static size_t uv_count_bufs(const uv_buf_t bufs[], unsigned int nbufs) {
-  unsigned int i;
-  size_t bytes;
-
-  bytes = 0;
-  for (i = 0; i < nbufs; i++)
-    bytes += bufs[i].len;
-
-  return bytes;
-}
-
-
 void uv__stream_init(uv_loop_t* loop,
                      uv_stream_t* stream,
                      uv_handle_type type) {
@@ -660,7 +648,7 @@ static size_t uv__write_req_size(uv_write_t* req) {
   size_t size;
 
   assert(req->bufs != NULL);
-  size = uv_count_bufs(req->bufs + req->write_index,
+  size = uv__count_bufs(req->bufs + req->write_index,
                         req->nbufs - req->write_index);
   assert(req->handle->write_queue_size >= size);
 
@@ -1327,7 +1315,7 @@ int uv_write2(uv_write_t* req,
   memcpy(req->bufs, bufs, nbufs * sizeof(bufs[0]));
   req->nbufs = nbufs;
   req->write_index = 0;
-  stream->write_queue_size += uv_count_bufs(bufs, nbufs);
+  stream->write_queue_size += uv__count_bufs(bufs, nbufs);
 
   /* Append the request to write_queue. */
   QUEUE_INSERT_TAIL(&stream->write_queue, &req->queue);
@@ -1395,7 +1383,7 @@ int uv_try_write(uv_stream_t* stream,
     return r;
 
   /* Remove not written bytes from write queue size */
-  written = uv_count_bufs(bufs, nbufs);
+  written = uv__count_bufs(bufs, nbufs);
   if (req.bufs != NULL)
     req_size = uv__write_req_size(&req);
   else

src/uv-common.c

@@ -446,6 +446,19 @@ int uv__getaddrinfo_translate_error(int sys_err) {
   return 0;  /* Pacify compiler. */
 }
 
+
+size_t uv__count_bufs(const uv_buf_t bufs[], unsigned int nbufs) {
+  unsigned int i;
+  size_t bytes;
+
+  bytes = 0;
+  for (i = 0; i < nbufs; i++)
+    bytes += (size_t) bufs[i].len;
+
+  return bytes;
+}
+
+
 int uv_fs_event_getpath(uv_fs_event_t* handle, char* buf, size_t* len) {
   size_t required_len;
 

src/uv-common.h

@@ -99,6 +99,8 @@ void uv__work_submit(uv_loop_t* loop,
 
 void uv__work_done(uv_async_t* handle);
 
+size_t uv__count_bufs(const uv_buf_t bufs[], unsigned int nbufs);
+
 #define uv__has_active_reqs(loop)                                             \
   (QUEUE_EMPTY(&(loop)->active_reqs) == 0)
 

src/win/pipe.c

@@ -1254,7 +1254,7 @@ static int uv_pipe_write_impl(uv_loop_t* loop,
     }
 
     /* Request queued by the kernel. */
-    req->queued_bytes = uv_count_bufs(bufs, nbufs);
+    req->queued_bytes = uv__count_bufs(bufs, nbufs);
     handle->write_queue_size += req->queued_bytes;
   } else if (handle->flags & UV_HANDLE_BLOCKING_WRITES) {
     /* Using overlapped IO, but wait for completion before returning */
@@ -1311,7 +1311,7 @@ static int uv_pipe_write_impl(uv_loop_t* loop,
       req->queued_bytes = 0;
     } else {
       /* Request queued by the kernel. */
-      req->queued_bytes = uv_count_bufs(bufs, nbufs);
+      req->queued_bytes = uv__count_bufs(bufs, nbufs);
       handle->write_queue_size += req->queued_bytes;
     }
 

src/win/stream-inl.h

@@ -53,15 +53,4 @@ INLINE static void uv_connection_init(uv_stream_t* handle) {
 }
 
 
-INLINE static size_t uv_count_bufs(const uv_buf_t bufs[], unsigned int nbufs) {
-  unsigned int i;
-  size_t bytes;
-
-  bytes = 0;
-  for (i = 0; i < nbufs; i++)
-    bytes += (size_t) bufs[i].len;
-
-  return bytes;
-}
-
 #endif /* UV_WIN_STREAM_INL_H_ */

src/win/tcp.c

@@ -839,7 +839,7 @@ int uv_tcp_write(uv_loop_t* loop,
     uv_insert_pending_req(loop, (uv_req_t*) req);
   } else if (UV_SUCCEEDED_WITH_IOCP(result == 0)) {
     /* Request queued by the kernel. */
-    req->queued_bytes = uv_count_bufs(bufs, nbufs);
+    req->queued_bytes = uv__count_bufs(bufs, nbufs);
     handle->reqs_pending++;
     handle->write_reqs_pending++;
     REGISTER_HANDLE_REQ(loop, handle, req);

src/win/udp.c

@@ -400,7 +400,7 @@ static int uv__send(uv_udp_send_t* req,
     uv_insert_pending_req(loop, (uv_req_t*)req);
   } else if (UV_SUCCEEDED_WITH_IOCP(result == 0)) {
     /* Request queued by the kernel. */
-    req->queued_bytes = uv_count_bufs(bufs, nbufs);
+    req->queued_bytes = uv__count_bufs(bufs, nbufs);
     handle->reqs_pending++;
     REGISTER_HANDLE_REQ(loop, handle, req);
   } else {