linux多线程同步的方法

在线程对共享相同内存操作时，就会出现多个线程对同一资源的使用，为此，需要对这些线程进行同步，以确保它们在访问共享内存的时候不会访问到无效的数值。-linux multi-thread synchronization

Threads share the same memory operation, there will be multiple threads use the same resources to do this, you need to synchronize these threads to ensure that when they access the shared memory does not have access to an invalid value.