projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| 37fb3e43 PD |
1 | /* |
| 2 | * CDDL HEADER START | |
| 3 | * | |
| 4 | * This file and its contents are supplied under the terms of the | |
| 5 | * Common Development and Distribution License ("CDDL"), version 1.0. | |
| 6 | * You may only use this file in accordance with the terms of version | |
| 7 | * 1.0 of the CDDL. | |
| 8 | * | |
| 9 | * A full copy of the text of the CDDL should have accompanied this | |
| 10 | * source. A copy of the CDDL is also available via the Internet at | |
| 11 | * http://www.illumos.org/license/CDDL. | |
| 12 | * | |
| 13 | * CDDL HEADER END | |
| 14 | */ | |
| 15 | /* | |
| 16 | * Copyright (c) 2017 by Delphix. All rights reserved. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef _SYS_AGGSUM_H | |
| 20 | #define _SYS_AGGSUM_H | |
| 21 | ||
| 22 | #include <sys/zfs_context.h> | |
| 23 | ||
| 24 | #ifdef __cplusplus | |
| 25 | extern "C" { | |
| 26 | #endif | |
| 27 | ||
| 28 | typedef struct aggsum_bucket aggsum_bucket_t; | |
| 29 | ||
| 30 | struct aggsum_bucket { | |
| 31 | kmutex_t asc_lock; | |
| 32 | int64_t asc_delta; | |
| 33 | uint64_t asc_borrowed; | |
| 34 | } ____cacheline_aligned; | |
| 35 | ||
| 36 | /* | |
| 37 | * Fan out over FANOUT cpus. | |
| 38 | */ | |
| 39 | typedef struct aggsum { | |
| 40 | kmutex_t as_lock; | |
| 41 | int64_t as_lower_bound; | |
| 42 | int64_t as_upper_bound; | |
| 43 | uint64_t as_numbuckets; | |
| 44 | aggsum_bucket_t *as_buckets; | |
| 45 | } aggsum_t; | |
| 46 | ||
| 47 | void aggsum_init(aggsum_t *, uint64_t); | |
| 48 | void aggsum_fini(aggsum_t *); | |
| 49 | int64_t aggsum_lower_bound(aggsum_t *); | |
| 50 | int64_t aggsum_upper_bound(aggsum_t *); | |
| 51 | int aggsum_compare(aggsum_t *, uint64_t); | |
| 52 | uint64_t aggsum_value(aggsum_t *); | |
| 53 | void aggsum_add(aggsum_t *, int64_t); | |
| 54 | ||
| 55 | #ifdef __cplusplus | |
| 56 | } | |
| 57 | #endif | |
| 58 | ||
| 59 | #endif /* _SYS_AGGSUM_H */ |