| 1 | // Copyright 2013 The Flutter Authors. All rights reserved. |
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| 2 | // Use of this source code is governed by a BSD-style license that can be |
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| 3 | // found in the LICENSE file. |
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| 4 | |
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| 5 | #ifndef FLUTTER_FML_EINTR_WRAPPER_H_ |
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| 6 | #define FLUTTER_FML_EINTR_WRAPPER_H_ |
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| 7 | |
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| 8 | #include <errno.h> |
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| 9 | |
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| 10 | #include "flutter/fml/build_config.h" |
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| 11 | |
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| 12 | #if defined(FML_OS_WIN) |
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| 13 | |
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| 14 | // Windows has no concept of EINTR. |
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| 15 | #define FML_HANDLE_EINTR(x) (x) |
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| 16 | #define FML_IGNORE_EINTR(x) (x) |
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| 17 | |
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| 18 | #else |
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| 19 | |
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| 20 | #define FML_HANDLE_EINTR(x) \ |
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| 21 | ({ \ |
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| 22 | decltype(x) eintr_wrapper_result; \ |
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| 23 | do { \ |
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| 24 | eintr_wrapper_result = (x); \ |
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| 25 | } while (eintr_wrapper_result == -1 && errno == EINTR); \ |
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| 26 | eintr_wrapper_result; \ |
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| 27 | }) |
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| 28 | |
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| 29 | #define FML_IGNORE_EINTR(x) \ |
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| 30 | ({ \ |
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| 31 | decltype(x) eintr_wrapper_result; \ |
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| 32 | do { \ |
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| 33 | eintr_wrapper_result = (x); \ |
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| 34 | if (eintr_wrapper_result == -1 && errno == EINTR) { \ |
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| 35 | eintr_wrapper_result = 0; \ |
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| 36 | } \ |
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| 37 | } while (0); \ |
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| 38 | eintr_wrapper_result; \ |
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| 39 | }) |
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| 40 | |
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| 41 | #endif // defined(FML_OS_WIN) |
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| 42 | |
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| 43 | #endif // FLUTTER_FML_EINTR_WRAPPER_H_ |
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| 44 | |
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