[libvirt] [PATCHv4 02/10] Implement domainMemoryStats API slot for LXC driver.
Daniel P. Berrange
berrange at redhat.com
Thu Feb 20 15:28:29 UTC 2014
On Fri, Feb 14, 2014 at 06:49:00PM +0100, Thorsten Behrens wrote:
> ---
> Notes to v4:
> - check errors before filling param array
> - UL->ULL change punted to separate patch
>
> src/lxc/lxc_driver.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 56 insertions(+)
>
> diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
> index f735631..827d989 100644
> --- a/src/lxc/lxc_driver.c
> +++ b/src/lxc/lxc_driver.c
> @@ -5197,6 +5197,61 @@ lxcNodeGetInfo(virConnectPtr conn,
>
>
> static int
> +lxcDomainMemoryStats(virDomainPtr dom,
> + struct _virDomainMemoryStat *stats,
> + unsigned int nr_stats,
> + unsigned int flags)
> +{
> + virDomainObjPtr vm;
> + int ret = -1;
> + virLXCDomainObjPrivatePtr priv;
> + unsigned long long swap_usage;
> + unsigned long mem_usage;
> +
> + virCheckFlags(0, -1);
> +
> + if (!(vm = lxcDomObjFromDomain(dom)))
> + goto cleanup;
> +
> + priv = vm->privateData;
> +
> + if (virDomainMemoryStatsEnsureACL(dom->conn, vm->def) < 0)
> + goto cleanup;
> +
> + if (!virCgroupGetMemSwapUsage(priv->cgroup, &swap_usage))
> + goto cleanup;
> +
> + if (!virCgroupGetMemoryUsage(priv->cgroup, &mem_usage))
> + goto cleanup;
> +
> + ret = 0;
> + if (!virDomainObjIsActive(vm))
> + goto cleanup;
This has to be higher up and raise VIR_ERR_OPERATION_INVALID
to prevent us accessing a NULL priv->cgroup.
ACK, I'll make that fix before pushing
Daniel
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