1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 2024 Klara Inc. 24 * 25 * This software was developed by 26 * Mariusz Zaborski <mariusz.zaborski@klarasystems.com> 27 * Fred Weigel <fred.weigel@klarasystems.com> 28 * under sponsorship from Wasabi Technology, Inc. and Klara Inc. 29 */ 30 31 #ifndef _CRRD_H_ 32 #define _CRRD_H_ 33 34 #define RRD_MAX_ENTRIES 256 35 36 #define RRD_ENTRY_SIZE sizeof (uint64_t) 37 #define RRD_STRUCT_ELEM (sizeof (rrd_t) / RRD_ENTRY_SIZE) 38 39 typedef enum { 40 DBRRD_FLOOR, 41 DBRRD_CEILING 42 } dbrrd_rounding_t; 43 44 typedef struct { 45 uint64_t rrdd_time; 46 uint64_t rrdd_txg; 47 } rrd_data_t; 48 49 typedef struct { 50 uint64_t rrd_head; /* head (beginning) */ 51 uint64_t rrd_tail; /* tail (end) */ 52 uint64_t rrd_length; 53 54 rrd_data_t rrd_entries[RRD_MAX_ENTRIES]; 55 } rrd_t; 56 57 typedef struct { 58 rrd_t dbr_minutes; 59 rrd_t dbr_days; 60 rrd_t dbr_months; 61 } dbrrd_t; 62 63 size_t rrd_len(rrd_t *rrd); 64 65 const rrd_data_t *rrd_entry(rrd_t *r, size_t i); 66 rrd_data_t *rrd_tail_entry(rrd_t *rrd); 67 uint64_t rrd_tail(rrd_t *rrd); 68 uint64_t rrd_get(rrd_t *rrd, size_t i); 69 70 void rrd_add(rrd_t *rrd, hrtime_t time, uint64_t txg); 71 72 void dbrrd_add(dbrrd_t *db, hrtime_t time, uint64_t txg); 73 uint64_t dbrrd_query(dbrrd_t *r, hrtime_t tv, dbrrd_rounding_t rouding); 74 75 #endif 76