#ifndef JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H

#define JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H

#include "jemalloc/internal/assert.h"

#define ATOMIC_INIT(...) {__VA_ARGS__}

typedef enum {

	atomic_memory_order_relaxed,

	atomic_memory_order_acquire,

	atomic_memory_order_release,

	atomic_memory_order_acq_rel,

	atomic_memory_order_seq_cst

} atomic_memory_order_t;

ATOMIC_INLINE int

atomic_enum_to_builtin(atomic_memory_order_t mo) {

	switch (mo) {

	case atomic_memory_order_relaxed:

		return __ATOMIC_RELAXED;

	case atomic_memory_order_acquire:

		return __ATOMIC_ACQUIRE;

	case atomic_memory_order_release:

		return __ATOMIC_RELEASE;

	case atomic_memory_order_acq_rel:

		return __ATOMIC_ACQ_REL;

	case atomic_memory_order_seq_cst:

		return __ATOMIC_SEQ_CST;

	}

	/* Can't happen; the switch is exhaustive. */

	not_reached();

}

ATOMIC_INLINE void

atomic_fence(atomic_memory_order_t mo) {

	__atomic_thread_fence(atomic_enum_to_builtin(mo));

}

#define JEMALLOC_GENERATE_ATOMICS(type, short_type,			\

    /* unused */ lg_size)						\

typedef struct {							\

	type repr;							\

} atomic_##short_type##_t;						\

									\

ATOMIC_INLINE type							\

atomic_load_##short_type(const atomic_##short_type##_t *a,		\

    atomic_memory_order_t mo) {						\

	type result;							\

	__atomic_load(&a->repr, &result, atomic_enum_to_builtin(mo));	\

	return result;							\

}									\

									\

ATOMIC_INLINE void							\

atomic_store_##short_type(atomic_##short_type##_t *a, type val,		\

    atomic_memory_order_t mo) {						\

	__atomic_store(&a->repr, &val, atomic_enum_to_builtin(mo));	\

}									\

									\

ATOMIC_INLINE type							\

atomic_exchange_##short_type(atomic_##short_type##_t *a, type val,	\

    atomic_memory_order_t mo) {						\

	type result;							\

	__atomic_exchange(&a->repr, &val, &result,			\

	    atomic_enum_to_builtin(mo));				\

	return result;							\

}									\

									\

ATOMIC_INLINE bool							\

atomic_compare_exchange_weak_##short_type(atomic_##short_type##_t *a,	\

    UNUSED type *expected, type desired,				\

    atomic_memory_order_t success_mo,					\

    atomic_memory_order_t failure_mo) {					\

	return __atomic_compare_exchange(&a->repr, expected, &desired,	\

	    true, atomic_enum_to_builtin(success_mo),			\

	    atomic_enum_to_builtin(failure_mo));			\

}									\

									\

ATOMIC_INLINE bool							\

atomic_compare_exchange_strong_##short_type(atomic_##short_type##_t *a,	\

    UNUSED type *expected, type desired,				\

    atomic_memory_order_t success_mo,					\

    atomic_memory_order_t failure_mo) {					\

	return __atomic_compare_exchange(&a->repr, expected, &desired,	\

	    false,							\

	    atomic_enum_to_builtin(success_mo),				\

	    atomic_enum_to_builtin(failure_mo));			\

}

#define JEMALLOC_GENERATE_INT_ATOMICS(type, short_type,			\

    /* unused */ lg_size)						\

JEMALLOC_GENERATE_ATOMICS(type, short_type, /* unused */ lg_size)	\

									\

ATOMIC_INLINE type							\

atomic_fetch_add_##short_type(atomic_##short_type##_t *a, type val,	\

    atomic_memory_order_t mo) {						\

	return __atomic_fetch_add(&a->repr, val,			\

	    atomic_enum_to_builtin(mo));				\

}									\

									\

ATOMIC_INLINE type							\

atomic_fetch_sub_##short_type(atomic_##short_type##_t *a, type val,	\

    atomic_memory_order_t mo) {						\

	return __atomic_fetch_sub(&a->repr, val,			\

	    atomic_enum_to_builtin(mo));				\

}									\

									\

ATOMIC_INLINE type							\

atomic_fetch_and_##short_type(atomic_##short_type##_t *a, type val,	\

    atomic_memory_order_t mo) {						\

	return __atomic_fetch_and(&a->repr, val,			\

	    atomic_enum_to_builtin(mo));				\

}									\

									\

ATOMIC_INLINE type							\

atomic_fetch_or_##short_type(atomic_##short_type##_t *a, type val,	\

    atomic_memory_order_t mo) {						\

	return __atomic_fetch_or(&a->repr, val,				\

	    atomic_enum_to_builtin(mo));				\

}									\

									\

ATOMIC_INLINE type							\

atomic_fetch_xor_##short_type(atomic_##short_type##_t *a, type val,	\

    atomic_memory_order_t mo) {						\

	return __atomic_fetch_xor(&a->repr, val,			\

	    atomic_enum_to_builtin(mo));				\

}

#endif /* JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H */