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/* Copyright (C) 2017 Robert Roth
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This file is part of LibGTop.
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Contributed by Robert Roth <robert.roth.off@gmail.com>, February 2017.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/procio.h>
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#include "glibtop_private.h"
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static const unsigned long _glibtop_sysdeps_proc_io =
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(1L << GLIBTOP_PROC_IO_DISK_RCHAR) + (1L << GLIBTOP_PROC_IO_DISK_WCHAR) +
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(1L << GLIBTOP_PROC_IO_DISK_RBYTES) + (1L << GLIBTOP_PROC_IO_DISK_WBYTES);
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/* Init function. */
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void
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_glibtop_init_proc_io_s (glibtop *server)
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{
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server->sysdeps.proc_io = _glibtop_sysdeps_proc_io;
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}
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/* Provides detailed information about a process. */
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void
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glibtop_get_proc_io_s (glibtop *server, glibtop_proc_io *buf, pid_t pid)
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{
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char buffer [BUFSIZ], *p;
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memset (buf, 0, sizeof (glibtop_proc_io));
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if (server->os_version_code < LINUX_VERSION_CODE(2, 6, 20))
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return;
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if (proc_file_to_buffer(buffer, sizeof buffer, "/proc/%d/io", pid))
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return;
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p = skip_token (buffer);
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buf->disk_rchar = g_ascii_strtoull (p, &p, 10);
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p = skip_line (p);
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p = skip_token (p);
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buf->disk_wchar = g_ascii_strtoull (p, &p, 10);
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p = skip_line (p);
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p = skip_line (p);
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p = skip_line (p);
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p = skip_token (p);
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buf->disk_rbytes = g_ascii_strtoull (p, &p, 10);
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p = skip_line (p);
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p = skip_token (p);
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buf->disk_wbytes = g_ascii_strtoull (p, &p, 10);
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buf->flags = _glibtop_sysdeps_proc_io;
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}
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