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467ef823d8
Introduce a simple filtering of statistics, that allows to retrieve
statistics for a subset of the guest vCPUs. This will be used for
example by the HMP monitor, in order to retrieve the statistics
for the currently selected CPU.
Example:
{ "execute": "query-stats",
"arguments": {
"target": "vcpu",
"vcpus": [ "/machine/unattached/device[2]",
"/machine/unattached/device[4]" ] } }
Extracted from a patch by Mark Kanda.
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/*
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* Copyright (c) 2022 Oracle and/or its affiliates.
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*
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* This work is licensed under the terms of the GNU GPL, version 2.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef STATS_H
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#define STATS_H
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#include "qapi/qapi-types-stats.h"
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typedef void StatRetrieveFunc(StatsResultList **result, StatsTarget target,
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strList *targets, Error **errp);
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typedef void SchemaRetrieveFunc(StatsSchemaList **result, Error **errp);
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/*
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* Register callbacks for the QMP query-stats command.
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*
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* @stats_fn: routine to query stats:
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* @schema_fn: routine to query stat schemas:
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*/
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void add_stats_callbacks(StatRetrieveFunc *stats_fn,
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SchemaRetrieveFunc *schemas_fn);
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/*
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* Helper routines for adding stats entries to the results lists.
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*/
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void add_stats_entry(StatsResultList **, StatsProvider, const char *id,
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StatsList *stats_list);
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void add_stats_schema(StatsSchemaList **, StatsProvider, StatsTarget,
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StatsSchemaValueList *);
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/*
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* True if a string matches the filter passed to the stats_fn callabck,
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* false otherwise.
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*
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* Note that an empty list means no filtering, i.e. all strings will
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* return true.
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*/
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bool apply_str_list_filter(const char *string, strList *list);
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#endif /* STATS_H */
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