libvirt获取虚机监控cpu 内存 磁盘吞吐API接口

typedef struct _domInfo {
    int nr_cpu_param;
    int nr_mem_param;
    int nr_if_param;
    int nr_blk_param;
    virVcpuInfo vcpu[VCPU_INFO_NUM];
    virDomainBlockStatsStruct blkstats[TARGET_DISK_NUM];
    virDomainInterfaceStatsStruct ifstats[TARGET_IF_NUM];
    virDomainMemoryStatStruct memstats[VIR_DOMAIN_MEMORY_STAT_NR];
} domInfo;