Flutter Engine
 
Loading...
Searching...
No Matches
eintr_wrapper.h
Go to the documentation of this file.
1// Copyright 2013 The Flutter Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef FILESYSTEM_EINTR_WRAPPER_H_
6#define FILESYSTEM_EINTR_WRAPPER_H_
7
8#include <cerrno>
9
10#include "tonic/common/build_config.h"
11
12#if defined(OS_WIN)
13
14// Windows has no concept of EINTR.
15#define HANDLE_EINTR(x) (x)
16#define IGNORE_EINTR(x) (x)
17
18#else
19
20#if defined(NDEBUG)
21
22#define HANDLE_EINTR(x) \
23 ({ \
24 decltype(x) eintr_wrapper_result; \
25 do { \
26 eintr_wrapper_result = (x); \
27 } while (eintr_wrapper_result == -1 && errno == EINTR); \
28 eintr_wrapper_result; \
29 })
30
31#else
32
33#define HANDLE_EINTR(x) \
34 ({ \
35 int eintr_wrapper_counter = 0; \
36 decltype(x) eintr_wrapper_result; \
37 do { \
38 eintr_wrapper_result = (x); \
39 } while (eintr_wrapper_result == -1 && errno == EINTR && \
40 eintr_wrapper_counter++ < 100); \
41 eintr_wrapper_result; \
42 })
43
44#endif // NDEBUG
45
46#define IGNORE_EINTR(x) \
47 ({ \
48 decltype(x) eintr_wrapper_result; \
49 do { \
50 eintr_wrapper_result = (x); \
51 if (eintr_wrapper_result == -1 && errno == EINTR) { \
52 eintr_wrapper_result = 0; \
53 } \
54 } while (0); \
55 eintr_wrapper_result; \
56 })
57
58#endif // defined(OS_WIN)
59
60#endif // FILESYSTEM_EINTR_WRAPPER_H_
build_config.h