aclrtSnapShotStage

typedef enum {
    ACL_RT_SNAPSHOT_LOCK_PRE = 0,   // Before locking
    ACL_RT_SNAPSHOT_BACKUP_PRE,      // Before backup
    ACL_RT_SNAPSHOT_BACKUP_POST,     // After backup
    ACL_RT_SNAPSHOT_RESTORE_PRE,     // Before restoration
    ACL_RT_SNAPSHOT_RESTORE_POST,    // After restoration
    ACL_RT_SNAPSHOT_UNLOCK_POST,     // After unlocking
} aclrtSnapShotStage;