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Diffstat (limited to 'lib/libzutil/zutil_nicenum.c')
| -rw-r--r-- | lib/libzutil/zutil_nicenum.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/lib/libzutil/zutil_nicenum.c b/lib/libzutil/zutil_nicenum.c deleted file mode 100644 index 44d68e85d0db..000000000000 --- a/lib/libzutil/zutil_nicenum.c +++ /dev/null @@ -1,185 +0,0 @@ -// SPDX-License-Identifier: CDDL-1.0 -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or https://opensource.org/licenses/CDDL-1.0. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ - -/* - * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - */ - -#include <ctype.h> -#include <math.h> -#include <stdio.h> -#include <libzutil.h> -#include <string.h> - -/* - * Return B_TRUE if "str" is a number string, B_FALSE otherwise. - * Works for integer and floating point numbers. - */ -boolean_t -zfs_isnumber(const char *str) -{ - if (!*str) - return (B_FALSE); - - for (; *str; str++) - if (!(isdigit(*str) || (*str == '.'))) - return (B_FALSE); - - /* - * Numbers should not end with a period ("." ".." or "5." are - * not valid) - */ - if (str[strlen(str) - 1] == '.') { - return (B_FALSE); - } - - return (B_TRUE); -} - -/* - * Convert a number to an appropriately human-readable output. - */ -void -zfs_nicenum_format(uint64_t num, char *buf, size_t buflen, - enum zfs_nicenum_format format) -{ - uint64_t n = num; - int index = 0; - const char *u; - const char *units[3][7] = { - [ZFS_NICENUM_1024] = {"", "K", "M", "G", "T", "P", "E"}, - [ZFS_NICENUM_BYTES] = {"B", "K", "M", "G", "T", "P", "E"}, - [ZFS_NICENUM_TIME] = {"ns", "us", "ms", "s", "?", "?", "?"} - }; - - const int units_len[] = {[ZFS_NICENUM_1024] = 6, - [ZFS_NICENUM_BYTES] = 6, - [ZFS_NICENUM_TIME] = 4}; - - const int k_unit[] = { [ZFS_NICENUM_1024] = 1024, - [ZFS_NICENUM_BYTES] = 1024, - [ZFS_NICENUM_TIME] = 1000}; - - double val; - - if (format == ZFS_NICENUM_RAW) { - snprintf(buf, buflen, "%llu", (u_longlong_t)num); - return; - } else if (format == ZFS_NICENUM_RAWTIME && num > 0) { - snprintf(buf, buflen, "%llu", (u_longlong_t)num); - return; - } else if (format == ZFS_NICENUM_RAWTIME && num == 0) { - snprintf(buf, buflen, "%s", "-"); - return; - } - - while (n >= k_unit[format] && index < units_len[format]) { - n /= k_unit[format]; - index++; - } - - u = units[format][index]; - - /* Don't print zero latencies since they're invalid */ - if ((format == ZFS_NICENUM_TIME) && (num == 0)) { - (void) snprintf(buf, buflen, "-"); - } else if ((index == 0) || ((num % - (uint64_t)powl(k_unit[format], index)) == 0)) { - /* - * If this is an even multiple of the base, always display - * without any decimal precision. - */ - (void) snprintf(buf, buflen, "%llu%s", (u_longlong_t)n, u); - - } else { - /* - * We want to choose a precision that reflects the best choice - * for fitting in 5 characters. This can get rather tricky when - * we have numbers that are very close to an order of magnitude. - * For example, when displaying 10239 (which is really 9.999K), - * we want only a single place of precision for 10.0K. We could - * develop some complex heuristics for this, but it's much - * easier just to try each combination in turn. - */ - int i; - for (i = 2; i >= 0; i--) { - val = (double)num / - (uint64_t)powl(k_unit[format], index); - - /* - * Don't print floating point values for time. Note, - * we use floor() instead of round() here, since - * round can result in undesirable results. For - * example, if "num" is in the range of - * 999500-999999, it will print out "1000us". This - * doesn't happen if we use floor(). - */ - if (format == ZFS_NICENUM_TIME) { - if (snprintf(buf, buflen, "%d%s", - (unsigned int) floor(val), u) <= 5) - break; - - } else { - if (snprintf(buf, buflen, "%.*f%s", i, - val, u) <= 5) - break; - } - } - } -} - -/* - * Convert a number to an appropriately human-readable output. - */ -void -zfs_nicenum(uint64_t num, char *buf, size_t buflen) -{ - zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_1024); -} - -/* - * Convert a time to an appropriately human-readable output. - * @num: Time in nanoseconds - */ -void -zfs_nicetime(uint64_t num, char *buf, size_t buflen) -{ - zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_TIME); -} - -/* - * Print out a raw number with correct column spacing - */ -void -zfs_niceraw(uint64_t num, char *buf, size_t buflen) -{ - zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_RAW); -} - -/* - * Convert a number of bytes to an appropriately human-readable output. - */ -void -zfs_nicebytes(uint64_t num, char *buf, size_t buflen) -{ - zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_BYTES); -} |