/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef ISC_STATS_H
#define ISC_STATS_H 1
/*! \file isc/stats.h */
#include <inttypes.h>
#include <isc/types.h>
/*%
* Statistics counters. Used as isc_statscounter_t values.
*/
enum {
/*%
* Socket statistics counters.
*/
isc_sockstatscounter_udp4open = 0,
isc_sockstatscounter_udp6open = 1,
isc_sockstatscounter_tcp4open = 2,
isc_sockstatscounter_tcp6open = 3,
isc_sockstatscounter_unixopen = 4,
isc_sockstatscounter_udp4openfail = 5,
isc_sockstatscounter_udp6openfail = 6,
isc_sockstatscounter_tcp4openfail = 7,
isc_sockstatscounter_tcp6openfail = 8,
isc_sockstatscounter_unixopenfail = 9,
isc_sockstatscounter_udp4close = 10,
isc_sockstatscounter_udp6close = 11,
isc_sockstatscounter_tcp4close = 12,
isc_sockstatscounter_tcp6close = 13,
isc_sockstatscounter_unixclose = 14,
isc_sockstatscounter_fdwatchclose = 15,
isc_sockstatscounter_udp4bindfail = 16,
isc_sockstatscounter_udp6bindfail = 17,
isc_sockstatscounter_tcp4bindfail = 18,
isc_sockstatscounter_tcp6bindfail = 19,
isc_sockstatscounter_unixbindfail = 20,
isc_sockstatscounter_fdwatchbindfail = 21,
isc_sockstatscounter_udp4connect = 22,
isc_sockstatscounter_udp6connect = 23,
isc_sockstatscounter_tcp4connect = 24,
isc_sockstatscounter_tcp6connect = 25,
isc_sockstatscounter_unixconnect = 26,
isc_sockstatscounter_fdwatchconnect = 27,
isc_sockstatscounter_udp4connectfail = 28,
isc_sockstatscounter_udp6connectfail = 29,
isc_sockstatscounter_tcp4connectfail = 30,
isc_sockstatscounter_tcp6connectfail = 31,
isc_sockstatscounter_unixconnectfail = 32,
isc_sockstatscounter_fdwatchconnectfail = 33,
isc_sockstatscounter_tcp4accept = 34,
isc_sockstatscounter_tcp6accept = 35,
isc_sockstatscounter_unixaccept = 36,
isc_sockstatscounter_tcp4acceptfail = 37,
isc_sockstatscounter_tcp6acceptfail = 38,
isc_sockstatscounter_unixacceptfail = 39,
isc_sockstatscounter_udp4sendfail = 40,
isc_sockstatscounter_udp6sendfail = 41,
isc_sockstatscounter_tcp4sendfail = 42,
isc_sockstatscounter_tcp6sendfail = 43,
isc_sockstatscounter_unixsendfail = 44,
isc_sockstatscounter_fdwatchsendfail = 45,
isc_sockstatscounter_udp4recvfail = 46,
isc_sockstatscounter_udp6recvfail = 47,
isc_sockstatscounter_tcp4recvfail = 48,
isc_sockstatscounter_tcp6recvfail = 49,
isc_sockstatscounter_unixrecvfail = 50,
isc_sockstatscounter_fdwatchrecvfail = 51,
isc_sockstatscounter_udp4active = 52,
isc_sockstatscounter_udp6active = 53,
isc_sockstatscounter_tcp4active = 54,
isc_sockstatscounter_tcp6active = 55,
isc_sockstatscounter_unixactive = 56,
isc_sockstatscounter_rawopen = 57,
isc_sockstatscounter_rawopenfail = 58,
isc_sockstatscounter_rawclose = 59,
isc_sockstatscounter_rawrecvfail = 60,
isc_sockstatscounter_rawactive = 61,
isc_sockstatscounter_max = 62
};
ISC_LANG_BEGINDECLS
/*%<
* Flag(s) for isc_stats_dump().
*/
#define ISC_STATSDUMP_VERBOSE 0x00000001 /*%< dump 0-value counters */
/*%<
* Dump callback type.
*/
typedef void (*isc_stats_dumper_t)(isc_statscounter_t, uint64_t, void *);
isc_result_t
isc_stats_create(isc_mem_t *mctx, isc_stats_t **statsp, int ncounters);
/*%<
* Create a statistics counter structure of general type. It counts a general
* set of counters indexed by an ID between 0 and ncounters -1.
*
* Requires:
*\li 'mctx' must be a valid memory context.
*
*\li 'statsp' != NULL && '*statsp' == NULL.
*
* Returns:
*\li ISC_R_SUCCESS -- all ok
*
*\li anything else -- failure
*/
void
isc_stats_attach(isc_stats_t *stats, isc_stats_t **statsp);
/*%<
* Attach to a statistics set.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*
*\li 'statsp' != NULL && '*statsp' == NULL
*/
void
isc_stats_detach(isc_stats_t **statsp);
/*%<
* Detaches from the statistics set.
*
* Requires:
*\li 'statsp' != NULL and '*statsp' is a valid isc_stats_t.
*/
int
isc_stats_ncounters(isc_stats_t *stats);
/*%<
* Returns the number of counters contained in stats.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*
*/
void
isc_stats_increment(isc_stats_t *stats, isc_statscounter_t counter);
/*%<
* Increment the counter-th counter of stats.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*
*\li counter is less than the maximum available ID for the stats specified
* on creation.
*/
void
isc_stats_decrement(isc_stats_t *stats, isc_statscounter_t counter);
/*%<
* Decrement the counter-th counter of stats.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*/
void
isc_stats_dump(isc_stats_t *stats, isc_stats_dumper_t dump_fn, void *arg,
unsigned int options);
/*%<
* Dump the current statistics counters in a specified way. For each counter
* in stats, dump_fn is called with its current value and the given argument
* arg. By default counters that have a value of 0 is skipped; if options has
* the ISC_STATSDUMP_VERBOSE flag, even such counters are dumped.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*/
void
isc_stats_set(isc_stats_t *stats, uint64_t val, isc_statscounter_t counter);
/*%<
* Set the given counter to the specified value.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*/
void
isc_stats_set(isc_stats_t *stats, uint64_t val, isc_statscounter_t counter);
/*%<
* Set the given counter to the specified value.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*/
void
isc_stats_update_if_greater(isc_stats_t *stats, isc_statscounter_t counter,
isc_statscounter_t value);
/*%<
* Atomically assigns 'value' to 'counter' if value > counter.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*
*\li counter is less than the maximum available ID for the stats specified
* on creation.
*/
isc_statscounter_t
isc_stats_get_counter(isc_stats_t *stats, isc_statscounter_t counter);
/*%<
* Returns value currently stored in counter.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*
*\li counter is less than the maximum available ID for the stats specified
* on creation.
*/
void
isc_stats_resize(isc_stats_t **stats, int ncounters);
/*%<
* Resize a statistics counter structure of general type. The new set of
* counters are indexed by an ID between 0 and ncounters -1.
*
* Requires:
*\li 'stats' is a valid isc_stats_t.
*\li 'ncounters' is a non-zero positive number.
*/
ISC_LANG_ENDDECLS
#endif /* ISC_STATS_H */
