diff options
Diffstat (limited to 'stats')
| -rw-r--r-- | stats/meson.build | 1 | ||||
| -rw-r--r-- | stats/stats-qmp-cmds.c | 162 |
2 files changed, 163 insertions, 0 deletions
diff --git a/stats/meson.build b/stats/meson.build new file mode 100644 index 0000000000..4ddb4d096b --- /dev/null +++ b/stats/meson.build @@ -0,0 +1 @@ +softmmu_ss.add(files('stats-qmp-cmds.c')) diff --git a/stats/stats-qmp-cmds.c b/stats/stats-qmp-cmds.c new file mode 100644 index 0000000000..bc973747fb --- /dev/null +++ b/stats/stats-qmp-cmds.c @@ -0,0 +1,162 @@ +/* + * QMP commands related to stats + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "sysemu/stats.h" +#include "qapi/qapi-commands-stats.h" +#include "qemu/queue.h" +#include "qapi/error.h" + +typedef struct StatsCallbacks { + StatsProvider provider; + StatRetrieveFunc *stats_cb; + SchemaRetrieveFunc *schemas_cb; + QTAILQ_ENTRY(StatsCallbacks) next; +} StatsCallbacks; + +static QTAILQ_HEAD(, StatsCallbacks) stats_callbacks = + QTAILQ_HEAD_INITIALIZER(stats_callbacks); + +void add_stats_callbacks(StatsProvider provider, + StatRetrieveFunc *stats_fn, + SchemaRetrieveFunc *schemas_fn) +{ + StatsCallbacks *entry = g_new(StatsCallbacks, 1); + entry->provider = provider; + entry->stats_cb = stats_fn; + entry->schemas_cb = schemas_fn; + + QTAILQ_INSERT_TAIL(&stats_callbacks, entry, next); +} + +static bool invoke_stats_cb(StatsCallbacks *entry, + StatsResultList **stats_results, + StatsFilter *filter, StatsRequest *request, + Error **errp) +{ + ERRP_GUARD(); + strList *targets = NULL; + strList *names = NULL; + + if (request) { + if (request->provider != entry->provider) { + return true; + } + if (request->has_names && !request->names) { + return true; + } + names = request->has_names ? request->names : NULL; + } + + switch (filter->target) { + case STATS_TARGET_VM: + break; + case STATS_TARGET_VCPU: + if (filter->u.vcpu.has_vcpus) { + if (!filter->u.vcpu.vcpus) { + /* No targets allowed? Return no statistics. */ + return true; + } + targets = filter->u.vcpu.vcpus; + } + break; + default: + abort(); + } + + entry->stats_cb(stats_results, filter->target, names, targets, errp); + if (*errp) { + qapi_free_StatsResultList(*stats_results); + *stats_results = NULL; + return false; + } + return true; +} + +StatsResultList *qmp_query_stats(StatsFilter *filter, Error **errp) +{ + StatsResultList *stats_results = NULL; + StatsCallbacks *entry; + StatsRequestList *request; + + QTAILQ_FOREACH(entry, &stats_callbacks, next) { + if (filter->has_providers) { + for (request = filter->providers; request; request = request->next) { + if (!invoke_stats_cb(entry, &stats_results, filter, + request->value, errp)) { + break; + } + } + } else { + if (!invoke_stats_cb(entry, &stats_results, filter, NULL, errp)) { + break; + } + } + } + + return stats_results; +} + +StatsSchemaList *qmp_query_stats_schemas(bool has_provider, + StatsProvider provider, + Error **errp) +{ + ERRP_GUARD(); + StatsSchemaList *stats_results = NULL; + StatsCallbacks *entry; + + QTAILQ_FOREACH(entry, &stats_callbacks, next) { + if (!has_provider || provider == entry->provider) { + entry->schemas_cb(&stats_results, errp); + if (*errp) { + qapi_free_StatsSchemaList(stats_results); + return NULL; + } + } + } + + return stats_results; +} + +void add_stats_entry(StatsResultList **stats_results, StatsProvider provider, + const char *qom_path, StatsList *stats_list) +{ + StatsResult *entry = g_new0(StatsResult, 1); + + entry->provider = provider; + entry->qom_path = g_strdup(qom_path); + entry->stats = stats_list; + + QAPI_LIST_PREPEND(*stats_results, entry); +} + +void add_stats_schema(StatsSchemaList **schema_results, + StatsProvider provider, StatsTarget target, + StatsSchemaValueList *stats_list) +{ + StatsSchema *entry = g_new0(StatsSchema, 1); + + entry->provider = provider; + entry->target = target; + entry->stats = stats_list; + QAPI_LIST_PREPEND(*schema_results, entry); +} + +bool apply_str_list_filter(const char *string, strList *list) +{ + strList *str_list = NULL; + + if (!list) { + return true; + } + for (str_list = list; str_list; str_list = str_list->next) { + if (g_str_equal(string, str_list->value)) { + return true; + } + } + return false; +} |