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/*
* compiler.h - compiler specific macros
*
* This software is distributed under a BSD-style license. See the
* file "COPYING" in the toop-level directory of the distribution for details.
*/
#ifndef _GPSD_COMPILER_H_
#define _GPSD_COMPILER_H_
#include "gpsd_config.h" /* is HAVE_STDATOMIC defined? */
/* Macro for declaring function with printf-like arguments. */
# if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
#define PRINTF_FUNC(format_index, arg_index) \
__attribute__((__format__(__printf__, format_index, arg_index)))
# else
#define PRINTF_FUNC(format_index, arg_indx)
#endif
/* Macro for declaring function arguments unused. */
#if defined(__GNUC__) || defined(__clang__)
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
/* Needed because 4.x versions of GCC are really annoying */
#define ignore_return(funcall) \
do { \
ssize_t locresult = (funcall); \
assert(locresult != -23); \
} while (0)
#ifdef HAVE_STDATOMIC
#include <stdatomic.h>
#endif /* HAVE_STDATOMIC */
static /*@unused@*/ inline void memory_barrier(void)
{
#ifndef S_SPLINT_S
#ifdef STD_ATOMIC_H
atomic_thread_fence(memory_order_seq_cst);
#endif /* STD_ATOMIC_H */
#endif /* S_SPLINT_S */
}
#endif /* _GPSD_COMPILER_H_ */
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