From a067db056927db232a2eb8cf79d4af096962eced Mon Sep 17 00:00:00 2001 From: "James Dominic P. Guana" Date: Sat, 10 Apr 2021 18:19:15 +0800 Subject: Revert "Revert "New API to retrieve disk stats in Linux"" This reverts commit 7e214414bf23d1ea34e7fdccb17a7f41040ffea9. --- sysdeps/linux/disk.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 sysdeps/linux/disk.c (limited to 'sysdeps/linux/disk.c') diff --git a/sysdeps/linux/disk.c b/sysdeps/linux/disk.c new file mode 100644 index 00000000..159f8f12 --- /dev/null +++ b/sysdeps/linux/disk.c @@ -0,0 +1,96 @@ +/* Copyright (C) 1998-99 Martin Baulig + This file is part of LibGTop 1.0. + + Contributed by James Dominic P. Guana , May 2020. + + LibGTop is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + LibGTop is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + for more details. + + You should have received a copy of the GNU General Public License + along with LibGTop; see the file COPYING. If not, write to the + Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#include +#include +#include + +#include "glibtop_private.h" + +static const unsigned long _glibtop_sysdeps_disk = +(1L << GLIBTOP_XDISK_SECTORS_READ) + (1L << GLIBTOP_XDISK_TIME_READ) + +(1L << GLIBTOP_XDISK_SECTORS_WRITE) + (1L << GLIBTOP_XDISK_TIME_WRITE); + +/* Init function. */ + +void +_glibtop_init_disk_s (glibtop *server) +{ + server->sysdeps.disk = _glibtop_sysdeps_disk; +} + +/* Provides information about disk usage. */ + +#define FILENAME "/proc/diskstats" //kernel reports sectors by 512 bytes even for AF 4kn +#define STAT_BUFSIZ 81920 + +void +glibtop_get_disk_s (glibtop *server, glibtop_disk *buf) +{ + char buffer [STAT_BUFSIZ], *p; + int i; + + memset (buf, 0, sizeof (glibtop_disk)); + + file_to_buffer(server, buffer, sizeof buffer, FILENAME); + + /* + * GLOBAL + */ + + p = buffer; /* "disk" */ + + /* + * PER DISK + */ + + for (i = 0; i <= server->ndisk; i++) { + + p = skip_multiple_token(p,2); + + // skip if disk is the raw device + if(!check_alphanumeric_word(p)){ + + p = skip_line(p); /* move to ^ */ + p = skip_multiple_token(p,2); + + } + + if (!check_disk_line_warn(server, p, i)) + break; + + p = skip_token(p); /* prev xdisk_name */ + p = skip_token(p); /* prev xdisk_reads_completed */ + p = skip_token(p); /* prev xdisk_reads_merged */ + + buf->xdisk_sectors_read [i] = strtoull (p, &p, 0); + buf->xdisk_time_read [i] = strtoull (p, &p, 0); + + p = skip_token(p); /* prev xdisk_writes_completed */ + p = skip_token(p); /* prev xdisk_writes_merged */ + + buf->xdisk_sectors_write [i] = strtoull (p, &p, 0); + buf->xdisk_time_write [i] = strtoull (p, &p, 0); + + p = skip_line(p); /* move to ^ */ + + } +} -- cgit v1.2.1