1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #pragma once
18
19 #include <sys/types.h>
20
21 #include <algorithm>
22
23 #include "adb_unique_fd.h"
24
25 #if defined(_WIN32)
26
27 // Layout of this struct must match struct WSABUF (verified via static assert in sysdeps_win32.cpp)
28 struct adb_iovec {
29 unsigned int iov_len;
30 void* iov_base;
31 };
32
33 ssize_t adb_writev(borrowed_fd fd, const adb_iovec* iov, int iovcnt);
34
35 #else
36
37 #include <sys/uio.h>
38 using adb_iovec = struct iovec;
adb_writev(borrowed_fd fd,const adb_iovec * iov,int iovcnt)39 inline ssize_t adb_writev(borrowed_fd fd, const adb_iovec* iov, int iovcnt) {
40 return writev(fd.get(), iov, std::min(iovcnt, IOV_MAX));
41 }
42
43 #endif
44
45 #pragma GCC poison writev
46