85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBLOG_PORTABILITY_H__
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#define _LIBLOG_PORTABILITY_H__
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#include <sys/cdefs.h>
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#include <unistd.h>
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/* Helpful private sys/cdefs.h like definitions */
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/* Declare this library function hidden and internal */
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#if defined(_WIN32)
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#define LIBLOG_HIDDEN
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#else
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#define LIBLOG_HIDDEN __attribute__((visibility("hidden")))
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#endif
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/* Declare this library function visible and external */
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#if defined(_WIN32)
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#define LIBLOG_ABI_PUBLIC
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#else
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#define LIBLOG_ABI_PUBLIC __attribute__((visibility("default")))
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#endif
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/* Declare this library function visible but private */
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#define LIBLOG_ABI_PRIVATE LIBLOG_ABI_PUBLIC
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/*
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* Declare this library function as reimplementation.
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* Prevent circular dependencies, but allow _real_ library to hijack
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*/
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#if defined(_WIN32)
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#define LIBLOG_WEAK static /* Accept that it is totally private */
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#else
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#define LIBLOG_WEAK __attribute__((weak, visibility("default")))
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#endif
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/* possible missing definitions in sys/cdefs.h */
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/* DECLS */
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#ifndef __BEGIN_DECLS
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#if defined(__cplusplus)
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#define __BEGIN_DECLS extern "C" {
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#define __END_DECLS }
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#else
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#define __BEGIN_DECLS
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#define __END_DECLS
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#endif
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#endif
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/* Unused argument. For C code only, remove symbol name for C++ */
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#ifndef __unused
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#define __unused __attribute__((__unused__))
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#endif
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/* possible missing definitions in unistd.h */
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#ifndef TEMP_FAILURE_RETRY
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/* Used to retry syscalls that can return EINTR. */
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#define TEMP_FAILURE_RETRY(exp) \
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({ \
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__typeof__(exp) _rc; \
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do { \
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_rc = (exp); \
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} while (_rc == -1 && errno == EINTR); \
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_rc; \
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})
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#endif
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#endif /* _LIBLOG_PORTABILITY_H__ */
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