9344d25488
g++ 5.5.0+ complained `parameter ‘expected’ set but not used [-Werror=unused-but-set-parameter]` (despite that `expected` is in fact used).
130 lines
4.1 KiB
C
130 lines
4.1 KiB
C
#ifndef JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H
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#define JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H
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#include "jemalloc/internal/assert.h"
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#define ATOMIC_INIT(...) {__VA_ARGS__}
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typedef enum {
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atomic_memory_order_relaxed,
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atomic_memory_order_acquire,
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atomic_memory_order_release,
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atomic_memory_order_acq_rel,
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atomic_memory_order_seq_cst
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} atomic_memory_order_t;
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ATOMIC_INLINE int
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atomic_enum_to_builtin(atomic_memory_order_t mo) {
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switch (mo) {
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case atomic_memory_order_relaxed:
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return __ATOMIC_RELAXED;
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case atomic_memory_order_acquire:
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return __ATOMIC_ACQUIRE;
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case atomic_memory_order_release:
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return __ATOMIC_RELEASE;
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case atomic_memory_order_acq_rel:
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return __ATOMIC_ACQ_REL;
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case atomic_memory_order_seq_cst:
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return __ATOMIC_SEQ_CST;
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}
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/* Can't happen; the switch is exhaustive. */
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not_reached();
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}
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ATOMIC_INLINE void
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atomic_fence(atomic_memory_order_t mo) {
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__atomic_thread_fence(atomic_enum_to_builtin(mo));
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}
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#define JEMALLOC_GENERATE_ATOMICS(type, short_type, \
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/* unused */ lg_size) \
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typedef struct { \
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type repr; \
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} atomic_##short_type##_t; \
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\
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ATOMIC_INLINE type \
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atomic_load_##short_type(const atomic_##short_type##_t *a, \
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atomic_memory_order_t mo) { \
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type result; \
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__atomic_load(&a->repr, &result, atomic_enum_to_builtin(mo)); \
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return result; \
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} \
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\
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ATOMIC_INLINE void \
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atomic_store_##short_type(atomic_##short_type##_t *a, type val, \
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atomic_memory_order_t mo) { \
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__atomic_store(&a->repr, &val, atomic_enum_to_builtin(mo)); \
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} \
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\
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ATOMIC_INLINE type \
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atomic_exchange_##short_type(atomic_##short_type##_t *a, type val, \
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atomic_memory_order_t mo) { \
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type result; \
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__atomic_exchange(&a->repr, &val, &result, \
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atomic_enum_to_builtin(mo)); \
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return result; \
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} \
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\
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ATOMIC_INLINE bool \
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atomic_compare_exchange_weak_##short_type(atomic_##short_type##_t *a, \
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UNUSED type *expected, type desired, \
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atomic_memory_order_t success_mo, \
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atomic_memory_order_t failure_mo) { \
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return __atomic_compare_exchange(&a->repr, expected, &desired, \
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true, atomic_enum_to_builtin(success_mo), \
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atomic_enum_to_builtin(failure_mo)); \
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} \
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\
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ATOMIC_INLINE bool \
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atomic_compare_exchange_strong_##short_type(atomic_##short_type##_t *a, \
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UNUSED type *expected, type desired, \
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atomic_memory_order_t success_mo, \
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atomic_memory_order_t failure_mo) { \
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return __atomic_compare_exchange(&a->repr, expected, &desired, \
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false, \
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atomic_enum_to_builtin(success_mo), \
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atomic_enum_to_builtin(failure_mo)); \
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}
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#define JEMALLOC_GENERATE_INT_ATOMICS(type, short_type, \
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/* unused */ lg_size) \
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JEMALLOC_GENERATE_ATOMICS(type, short_type, /* unused */ lg_size) \
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\
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ATOMIC_INLINE type \
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atomic_fetch_add_##short_type(atomic_##short_type##_t *a, type val, \
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atomic_memory_order_t mo) { \
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return __atomic_fetch_add(&a->repr, val, \
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atomic_enum_to_builtin(mo)); \
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} \
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\
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ATOMIC_INLINE type \
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atomic_fetch_sub_##short_type(atomic_##short_type##_t *a, type val, \
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atomic_memory_order_t mo) { \
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return __atomic_fetch_sub(&a->repr, val, \
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atomic_enum_to_builtin(mo)); \
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} \
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\
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ATOMIC_INLINE type \
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atomic_fetch_and_##short_type(atomic_##short_type##_t *a, type val, \
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atomic_memory_order_t mo) { \
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return __atomic_fetch_and(&a->repr, val, \
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atomic_enum_to_builtin(mo)); \
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} \
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\
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ATOMIC_INLINE type \
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atomic_fetch_or_##short_type(atomic_##short_type##_t *a, type val, \
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atomic_memory_order_t mo) { \
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return __atomic_fetch_or(&a->repr, val, \
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atomic_enum_to_builtin(mo)); \
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} \
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\
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ATOMIC_INLINE type \
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atomic_fetch_xor_##short_type(atomic_##short_type##_t *a, type val, \
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atomic_memory_order_t mo) { \
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return __atomic_fetch_xor(&a->repr, val, \
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atomic_enum_to_builtin(mo)); \
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}
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#endif /* JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H */
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