42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
#include <rex/platform.h>
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#include <rex/thread/atomic.h>
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static_assert(REX_PLATFORM_LINUX || REX_PLATFORM_MAC, "This file is POSIX-only");
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namespace rex::thread {
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int32_t atomic_inc(volatile int32_t* value) {
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return __sync_add_and_fetch(value, 1);
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}
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int32_t atomic_dec(volatile int32_t* value) {
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return __sync_sub_and_fetch(value, 1);
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}
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int32_t atomic_exchange(int32_t new_value, volatile int32_t* value) {
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return __atomic_exchange_n(value, new_value, __ATOMIC_SEQ_CST);
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}
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int64_t atomic_exchange(int64_t new_value, volatile int64_t* value) {
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return __atomic_exchange_n(value, new_value, __ATOMIC_SEQ_CST);
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}
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int32_t atomic_exchange_add(int32_t amount, volatile int32_t* value) {
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return __sync_fetch_and_add(value, amount);
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}
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int64_t atomic_exchange_add(int64_t amount, volatile int64_t* value) {
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return __sync_fetch_and_add(value, amount);
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}
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bool atomic_cas(int32_t old_value, int32_t new_value, volatile int32_t* value) {
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return __sync_bool_compare_and_swap(reinterpret_cast<volatile int32_t*>(value), old_value,
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new_value);
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}
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bool atomic_cas(int64_t old_value, int64_t new_value, volatile int64_t* value) {
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return __sync_bool_compare_and_swap(reinterpret_cast<volatile int64_t*>(value), old_value,
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new_value);
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}
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void atomic_store_release(int32_t new_value, volatile int32_t* value) {
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__atomic_store_n(value, new_value, __ATOMIC_RELEASE);
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}
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} // namespace rex::thread
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