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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FLUTTER_FML_EINTR_WRAPPER_H_
#define FLUTTER_FML_EINTR_WRAPPER_H_
#include "flutter/fml/build_config.h"
#include <errno.h>
#if defined(OS_WIN)
// Windows has no concept of EINTR.
#define FML_HANDLE_EINTR(x) (x)
#define FML_IGNORE_EINTR(x) (x)
#else
#if defined(NDEBUG)
#define FML_HANDLE_EINTR(x) \
({ \
decltype(x) eintr_wrapper_result; \
do { \
eintr_wrapper_result = (x); \
} while (eintr_wrapper_result == -1 && errno == EINTR); \
eintr_wrapper_result; \
})
#else
#define FML_HANDLE_EINTR(x) \
({ \
int eintr_wrapper_counter = 0; \
decltype(x) eintr_wrapper_result; \
do { \
eintr_wrapper_result = (x); \
} while (eintr_wrapper_result == -1 && errno == EINTR && \
eintr_wrapper_counter++ < 100); \
eintr_wrapper_result; \
})
#endif // NDEBUG
#define FML_IGNORE_EINTR(x) \
({ \
decltype(x) eintr_wrapper_result; \
do { \
eintr_wrapper_result = (x); \
if (eintr_wrapper_result == -1 && errno == EINTR) { \
eintr_wrapper_result = 0; \
} \
} while (0); \
eintr_wrapper_result; \
})
#endif // defined(OS_WIN)
#endif // FLUTTER_FML_EINTR_WRAPPER_H_