ARM处理器的StoreBuffer大小有限，内存屏障也无法保障可见性顺序

uint32_t Reflashflag = 0; int32_t ErrorCnt = 0; uint32_t PrintCont = 0; pthread_mutex_t mutex; //增加mtx保护 int ready = 0; // 通过内置函数实现原子操作 // 定义读写锁 pthread_rwlock_t rwlock;

void Test1(void) { static uint32_t change = 0; static uint32_t change1 = 0;

for(uint32_t cnt = 0 ; cnt < 5;cnt++) { change++; change1++; RTVolt1 = change; RTVolt2 = change; RTVolt3 = change; RTVolt4 = change; RTVolt5 = change; RTVolt6 = change1; RTVolt7 = change1; RTVolt8 = change1; RTVolt9 = change1; RTVolt10 = change1; RTVolt11 = change1; RTVolt12 = change1; RTVolt13 = change1; } __sync_synchronize(); //__atomic_s