查询磁盘吞吐量流程（1）

来源：互联网发布：virtualbox源码编辑：程序博客网时间：2024/06/05 20:52

#0 virDomainBlockStats (dom=0x7ffff00026c0, disk=0x69e080 "xvda", stats=0x7fffffffe300, size=40) at libvirt.c:7513
#1 0x000000000042cdfb in cmdDomblkstat (ctl=0x7fffffffe450, cmd=0x672240) at virsh.c:1392
#2 0x0000000000427604 in vshCommandRun (ctl=0x7fffffffe450, cmd=0x672240) at virsh.c:17763
#3 0x000000000042f3e1 in main (argc=4, argv=0x7fffffffe5d8) at virsh.c:19340

int
main(int argc, char **argv)
{
if (!ctl->imode) {
ret = vshCommandRun(ctl, ctl->cmd);

static bool
vshCommandRun(vshControl *ctl, const vshCmd *cmd)
{
ret = cmd->def->handler(ctl, cmd);

static bool
cmdDomblkstat (vshControl *ctl, const vshCmd *cmd)
{
        if (virDomainBlockStats(dom, device, &stats,
                                sizeof stats) == -1) {
            vshError(ctl, _("Failed to get block stats %s %s"),
                     name, device);
            goto cleanup;
        }

int
virDomainBlockStats(virDomainPtr dom, const char *disk,
                    virDomainBlockStatsPtr stats, size_t size)
{
    if (conn->driver->domainBlockStats) {
        if (conn->driver->domainBlockStats (dom, disk, &stats2) == -1)