mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-27 11:29:36 +03:00
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
|
/*
|
||
|
|
* CDDL HEADER START
|
||
|
|
*
|
||
|
|
* This file and its contents are supplied under the terms of the
|
||
|
|
* Common Development and Distribution License ("CDDL"), version 1.0.
|
||
|
|
* You may only use this file in accordance with the terms of version
|
||
|
|
* 1.0 of the CDDL.
|
||
|
|
*
|
||
|
|
* A full copy of the text of the CDDL should have accompanied this
|
||
|
|
* source. A copy of the CDDL is also available via the Internet at
|
||
|
|
* http://www.illumos.org/license/CDDL.
|
||
|
|
*
|
||
|
|
* CDDL HEADER END
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* wmsum counters are a reduced version of aggsum counters, optimized for
|
||
|
|
* write-mostly scenarios. They do not provide optimized read functions,
|
||
|
|
* but instead allow much cheaper add function. The primary usage is
|
||
|
|
* infrequently read statistic counters, not requiring exact precision.
|
||
|
|
*
|
||
|
|
* In user-space due to lack of better implementation mapped to aggsum.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _SYS_WMSUM_H
|
||
|
|
#define _SYS_WMSUM_H
|
||
|
|
|
||
|
|
#include <sys/aggsum.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define wmsum_t aggsum_t
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
wmsum_init(wmsum_t *ws, uint64_t value)
|
||
|
|
{
|
||
|
|
|
||
|
|
aggsum_init(ws, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
wmsum_fini(wmsum_t *ws)
|
||
|
|
{
|
||
|
|
|
||
|
|
aggsum_fini(ws);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline uint64_t
|
||
|
|
wmsum_value(wmsum_t *ws)
|
||
|
|
{
|
||
|
|
|
||
|
|
return (aggsum_value(ws));
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
wmsum_add(wmsum_t *ws, int64_t delta)
|
||
|
|
{
|
||
|
|
|
||
|
|
aggsum_add(ws, delta);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _SYS_WMSUM_H */
|