On Fri, Jul 22, 2022 at 02:44:30PM +0200, Kristina Hanicova wrote:
On Thu, Jul 14, 2022 at 7:54 AM Amneesh Singh <natto@xxxxxxxxxxxxx> wrote:Related: https://gitlab.com/libvirt/libvirt/-/issues/276 This patch adds an API for the "query-stats" QMP command. The query returns a JSON containing the statistics based on the target, which can either be vCPU or VM, and the providers. The API deserializes the query result into an array of GHashMaps, which can later be used to extract all the query statistics. GHashMaps are used to avoid traversing the entire array to find the statistics you are looking for. This would be a singleton array if the target is a VM since the returned JSON is also a singleton array in that case. Signed-off-by: Amneesh Singh <natto@xxxxxxxxxxxxx> --- src/qemu/qemu_monitor.c | 70 +++++++++++++++++++ src/qemu/qemu_monitor.h | 45 ++++++++++++ src/qemu/qemu_monitor_json.c | 130 +++++++++++++++++++++++++++++++++++ src/qemu/qemu_monitor_json.h | 6 ++ 4 files changed, 251 insertions(+)
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diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h index 95267ec6..344636e1 100644 --- a/src/qemu/qemu_monitor.h +++ b/src/qemu/qemu_monitor.h @@ -1554,3 +1554,48 @@ qemuMonitorChangeMemoryRequestedSize(qemuMonitor *mon, int qemuMonitorMigrateRecover(qemuMonitor *mon, const char *uri); + +typedef enum { + QEMU_MONITOR_QUERY_STATS_TARGET_VM, + QEMU_MONITOR_QUERY_STATS_TARGET_VCPU, + QEMU_MONITOR_QUERY_STATS_TARGET_LAST, +} qemuMonitorQueryStatsTargetType; + +VIR_ENUM_DECL(qemuMonitorQueryStatsTarget); + +typedef enum { + QEMU_MONITOR_QUERY_STATS_NAME_HALT_POLL_SUCCESS_NS, + QEMU_MONITOR_QUERY_STATS_NAME_HALT_POLL_FAIL_NS, + QEMU_MONITOR_QUERY_STATS_NAME_LAST, +} qemuMonitorQueryStatsNameType; + +VIR_ENUM_DECL(qemuMonitorQueryStatsName); + +typedef enum { + QEMU_MONITOR_QUERY_STATS_PROVIDER_KVM, + QEMU_MONITOR_QUERY_STATS_PROVIDER_LAST, +} qemuMonitorQueryStatsProviderType; + +VIR_ENUM_DECL(qemuMonitorQueryStatsProvider); + +typedef struct _qemuMonitorQueryStatsProvider qemuMonitorQueryStatsProvider; +struct _qemuMonitorQueryStatsProvider { + qemuMonitorQueryStatsProviderType provider;It is a bit confusing for me to have a variable 'provider' in the 'provider' structure. Later you use provider->provider which is not very readable. I would prefer 'type' (maybe even 'providerType') instead.
I think I suggested `type` in previous review. I'll fix this up and the other comments (mine as well) before pushing unless there is something bigger in the last patch.
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