atomic.h

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#pragma once
 
// C11 stdatomic.h conflicts with MSVC's C++ <atomic> header on Windows.
// When compiling C++ with MSVC runtime headers (even with Clang), we must not
// include stdatomic.h as the MSVC <atomic> header already provides the same
// functionality and the declarations conflict.
#if defined(__cplusplus) && defined(_WIN32)
#include <atomic>
#else
#include <stdatomic.h>
#endif
#include <stdbool.h>
#include <stdint.h>
 
#define SHOULD_EXIT() (atomic_load(&g_server_should_exit))
 
#define CLIENT_SHOULD_EXIT() (atomic_load(&g_should_exit))
 
#define ATOMIC_LOAD_BOOL(ptr) atomic_load((atomic_bool *)(ptr))
 
#define ATOMIC_LOAD_UINT32(ptr) atomic_load((atomic_uint32_t *)(ptr))
 
#define ATOMIC_LOAD_UINT64(ptr) atomic_load((atomic_uint64_t *)(ptr))
 
#define ATOMIC_STORE_BOOL(ptr, value) atomic_store((atomic_bool *)(ptr), (value))
 
#define ATOMIC_STORE_UINT32(ptr, value) atomic_store((atomic_uint32_t *)(ptr), (value))
 
#define ATOMIC_STORE_UINT64(ptr, value) atomic_store((atomic_uint64_t *)(ptr), (value))
 
#define ATOMIC_CAS_BOOL(ptr, expected, new_value)                                                                      \
  atomic_compare_exchange_strong((atomic_bool *)(ptr), &(expected), (new_value))
 
#define ATOMIC_CAS_UINT32(ptr, expected, new_value)                                                                    \
  atomic_compare_exchange_strong((atomic_uint32_t *)(ptr), (expected), (new_value))
 
#define ATOMIC_ADD_UINT32(ptr, delta) atomic_fetch_add((atomic_uint32_t *)(ptr), (delta))
 
#define ATOMIC_SUB_UINT32(ptr, delta) atomic_fetch_sub((atomic_uint32_t *)(ptr), (delta))
 
#endif